JP2008269059A - Plotting processing program and plotting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a plotting processing program and a plotting processing device for achieving much more real plotting in plotting processing using a coordinate input by a pointing device. <P>SOLUTION: A display device is caused to display plotting corresponding to an output from a pointing device which outputs an input position. An input position acquisition means repeatedly acquires an input position from the pointing device. A plotting means displays a predetermined element image at a display device by plotting the predetermined element image at the latest input position acquired by the input position acquisition means. A re-plotting means displays an element image with a display size larger than that of the predetermined element image at the display device by plotting the element image at the past input position acquired by the input position acquisition means. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a drawing processing program and a drawing processing device, and more particularly to a drawing processing program and a drawing processing device for displaying characters and graphics on a display screen in response to a user input using a pointing device.

2. Description of the Related Art Conventionally, there are devices that draw characters, graphics, and the like on a display screen using a personal computer, a game device, or the like operated by a pointing device that inputs coordinates to the display screen. For example, an apparatus that draws characters and figures in response to handwriting input on a touch panel, which is one of pointing devices, has been disclosed (see, for example, Patent Document 1). In the apparatus disclosed in Patent Document 1, the moving speed at which the pressed position is moved is calculated based on the coordinate data output from the touch panel, and the size of the drawing pattern is changed according to the moving speed.
JP 2006-252141 A

  However, the apparatus disclosed in Patent Document 1 merely changes the size of the drawing pattern according to the input speed at which handwriting is input on the touch panel. In other words, the trajectory drawn on the display screen does not change after that, and does not give a realistic expression that ink or ink bleeds over time after drawing with a brush or pen. .

  SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a drawing processing program and a drawing processing apparatus that enable more realistic drawing in drawing processing using coordinate input by a pointing device.

  In order to achieve the above object, the present invention employs the following configuration. Note that the reference numerals in parentheses, step numbers, and the like indicate correspondence with the embodiments described later in order to help understanding of the present invention, and do not limit the scope of the present invention.

  A first invention is a drawing processing program executed by a computer (21) that causes a display device (12) to display a drawing corresponding to an output from a pointing device (15) that outputs an input position (TP). The drawing processing program includes a computer as an input position acquisition means (CPU core 21 for executing steps 52 and 59; hereinafter, only step numbers will be described), drawing means (S56, S92), and redrawing means (S95). To work. The input position acquisition means repeatedly acquires the input position from the pointing device. The drawing means draws a predetermined element image at the latest input position (latest designated position P) acquired by the input position acquisition means, and displays it on the display device. The redrawing means draws an element image having a display size larger than the predetermined element image at the past input position acquired by the input position acquisition means and displays it on the display device. The past input positions to be drawn by the redrawing means are all the input positions acquired in the past, the past input positions input within a certain time from the latest input positions, and within a certain area from the latest input positions. Including the past input position input in the past, or a certain number of past input positions. Further, the redrawing unit may erase and redraw the previously drawn element image, or may redraw by superimposing a new element image on the previously drawn element image. The pointing device is an input device that specifies the input position and coordinates on the screen. For example, the pointing device detects the screen position indicated by the housing of the touch panel, mouse, track pad, track ball, touch screen, or game controller. It is realized by the system etc.

  In a second aspect based on the first aspect, the computer is further caused to function as size selection means. The size selection means is an element of a display size (Wi) that increases gradually according to the order acquired by the input position acquisition means for each of a plurality of past input positions that are traced back in time series from the latest input position. An image is selected (S94, FIGS. 4A to 4C). The redrawing means draws the element image selected by the size selecting means for each of the plurality of input positions and displays it on the display device.

  In a third aspect based on the second aspect, the redrawing means has a maximum display element size (Wt) of the element image at the input position according to the input moving speed (buffer distance) at the past input position. And the display size of the element image drawn for the input position is limited to the maximum value (S72, S76). Note that the drawing performed by the redrawing means after the display size reaches the maximum value is to redraw the element image with the maximum display size (that is, the element image with the maximum display size is drawn many times at the same input position) Or an element image with a display size less than the maximum value may be redrawn (that is, an element image with a display size less than the maximum value is drawn many times at the same input position). The redrawing itself may be stopped.

  In a fourth aspect based on the third aspect, the computer is further caused to function as input speed calculation means (S71). The input speed calculation unit uses the input position acquired by the input position acquisition unit to draw the element image for the past input position (Dc) by the redrawing unit. The moving speed of the input at is calculated. For each past input position, the redrawing means is configured so that the maximum value decreases as the moving speed increases according to the moving speed of the input at each past input position calculated by the input speed calculating means. Determine the maximum value of the input position.

  In a fifth aspect based on the third aspect, the computer is further caused to function as input speed calculation means and storage means (S76, Dc). The input speed calculation means calculates the input moving speed at the latest input position using the input position acquired by the input position acquisition means. The storage unit stores information on the moving speed for each input position based on the moving speed calculated by the input speed calculating unit. For each past input position, the redrawing unit refers to the information regarding the moving speed for each input position stored by the storing unit, and the maximum value decreases as the moving speed at each input position increases. Determine the maximum value for each input position. Here, the information related to the moving speed includes data indicating the calculated moving speed itself, data obtained by processing the moving speed (specifically, data indicating the maximum value of the display size, and data indicating the target thickness Wt in the embodiment). ) Etc. are included.

  In a sixth aspect based on the first aspect, the drawing means draws an element image having a preset minimum display size at the latest input position (S92). The redrawing means draws an element image having a display size larger than the minimum display size at a past input position that is traced back in time series from the latest input position, and further displays an element image having a larger display size in the past input Draw at the past input position that is further back in time series from the position.

  In a seventh aspect based on the second aspect, the size selecting means is a drawing pattern corresponding to each of the input positions acquired by the input position acquiring means from the drawing patterns (Df1) having a plurality of display sizes stored in the memory. Is selected as the element image.

  In an eighth aspect based on the first aspect, the redrawing means is composed of a pixel having a relatively dark color density at the center and an element image composed of pixels having a relatively light color density around the redrawing means. (FIGS. 7 to 9) are overlaid on the element images already drawn for the past input positions (addition of bitmap information, FIG. 15).

  In a ninth aspect based on the first aspect, the computer is further caused to function as operation type determination means (S55, S81 to S84) and type selection means (S55, S85 to S89). The operation type determination unit determines an operation type (on, slide, connection, side stop, vertical stop) in which the user operates the pointing device at the latest input position according to the acquisition history of the input position acquisition unit. The type selection unit selects the type of element image to be used from among a plurality of types of element images according to the operation type determined for the latest input position by the operation type determination unit. The drawing means and the redrawing means draw the element images of the type selected according to the operation type at the latest input position, respectively, at the latest input position and the past input position.

  In a tenth aspect based on the first aspect, the computer is further caused to function as an operation type determination unit and a type selection unit. The operation type determination unit determines an operation type in which the user operates the pointing device at each input position according to the acquisition history of the input position acquisition unit. The type selection unit selects the type of element image to be used from among a plurality of types of element images according to the operation type determined for each input position by the operation type determination unit. The drawing unit and the redrawing unit respectively draw element images of a type selected according to the operation type at each input position at each input position.

  In an eleventh aspect based on the ninth or tenth aspect, when the input position acquisition means first acquires the input position (touch-on instruction position), the operation type determination means Determines that the pointing device is operated in the input start state (entered) and the input position acquisition means continuously acquires the input position, the user inputs to the input position. It is determined that the pointing device is operated in the operation type of the continuous state (slide). The type selection unit determines that the element image (FIG. 8) having the first shape classified into the operation type is the input start state in response to the operation type determination unit determining that the operation type is the input start state. The second shape different from the first shape classified into the operation type is selected according to the selected input position and the operation type determination means determines that the operation type is in the input continuation state. A shape element image (FIG. 7) is selected corresponding to the input position determined to be the input continuation state.

  In a twelfth aspect based on the eleventh aspect, in the eleventh aspect, the operation type determining means has the input position acquired when the input position acquired by the input position acquisition means is within a predetermined range centered on the first input position. On the other hand, it is determined that the pointing device is operated with the operation type in the input start state.

  In a thirteenth aspect based on the eleventh aspect, the type selecting means includes the first type until the predetermined condition is satisfied (connection) after the operation type determining means determines that the operation type in the input start state has ended. An element image (FIG. 9) having an intermediate shape between the shape and the second shape is selected corresponding to the input position. For example, the predetermined condition is when a certain time has elapsed after it is determined that the operation type in the input start state has ended, or when a certain distance has elapsed after it has been determined that the operation type in the input start state has ended, etc. It corresponds to.

  In a fourteenth aspect based on the eleventh aspect, the operation type determining means determines that the user is in an input end state (lateral stop) when the input position repeatedly acquired by the input position acquiring means is within a predetermined range for a predetermined time or more. ), It is determined that the pointing device is being operated. The type selection means is a drawing pattern having a third shape different from the first shape and the second shape classified into the operation type according to the determination that the operation type determination means is the operation type in the input end state. Is selected corresponding to the input position.

  In a fifteenth aspect based on the second aspect, the size selection unit is configured to select the element image selected at the input position before and after the interpolation with respect to the position interpolated between the input positions acquired by the input position acquisition unit. An element image having a display size for linear interpolation of the size is further selected (S96). The redrawing means draws the element image selected by the size selecting means at each position where the element image setting means interpolates between the input position and the input position, and displays it on the display device (S97).

  In a sixteenth aspect based on the first aspect, the pointing device is a touch panel that covers the display screen of the display device. The input position acquisition unit acquires touch coordinate data output from the touch panel as an input position.

  A seventeenth aspect of the present invention is a drawing processing apparatus that causes a display device to display a drawing corresponding to an output from a pointing device that outputs an input position. The drawing processing apparatus includes an input position acquisition unit, a drawing unit, and a redrawing unit. The input position acquisition means repeatedly acquires the input position from the pointing device. The drawing means draws a predetermined element image at the latest input position acquired by the input position acquisition means and displays it on the display device. The redrawing means draws an element image having a display size larger than the predetermined element image at the past input position acquired by the input position acquisition means and displays it on the display device.

  According to the first aspect, the element image having a relatively large display size is rendered at the past input position with respect to the latest input position. For example, it is possible to draw a line by connecting these element images side by side, and because the line thickness is drawn thick at the input position after the line has been drawn, it is expressed by brush drawing. Realistic drawing like a drawn line becomes possible.

  According to the second aspect, the element is drawn with a small element image at the latest input position, and is drawn with a larger element image at a position going back to the past input position from the input position. For example, when drawing a line by connecting these element images side by side, it is drawn so that the thickness of the line gradually increases as time passes immediately after drawing the line. Realistic drawing like a drawn line becomes possible.

  According to the third to fifth aspects, the maximum value of the display size of the drawn element image changes according to the moving speed of the user input. Therefore, it is possible to reduce the line thickness drawn when the input moving speed is high, and to thicken the line drawn when the input moving speed is low, which enables more realistic drawing.

  According to the sixth aspect, the element image having the smallest display size is drawn at the latest input position, and the element image whose display size is gradually increased from the input position back to the past input position side. Since the drawing is performed, it is possible to perform an expression such that the bleeding progresses with time.

  According to the seventh aspect, since the element image to be drawn and redrawn is selected from a plurality of drawing patterns stored in advance, it is possible to draw shapes having a wide variety.

  According to the eighth aspect of the invention, since the image is redrawn so that the drawing pattern is further overwritten on the already drawn image, an actual density variation can be expressed. Also, since a drawing pattern that becomes darker toward the center is used, even when expressing a line in which a plurality of these drawing patterns are connected, a line that becomes darker toward the line center can be drawn. it can.

  According to the ninth and tenth aspects of the present invention, it is possible to perform drawing that expresses different shapes depending on the user's operation type.

  According to the eleventh and twelfth aspects of the invention, the user can draw an image of the first shape at the input start time (for example, touch-on to the touch panel), and when the user moves to the basic operation from the input start time, An image having a shape of 2 can be drawn. For example, by setting the first shape as a teardrop shape that appears when a brush first comes into contact with paper, a handwritten line having a shape imitating “entering” in writing with a brush can be drawn.

  According to the thirteenth aspect, when the user moves from the input start time to the basic operation, the first shape drawing pattern used at the input start time changes to the second shape drawing pattern used in the basic operation. Since the element image having an intermediate shape is drawn, the shape change expressed by the drawing process becomes smooth.

  According to the fourteenth aspect, when the user stops moving the input position (for example, before the touch panel is touched off), the element image having the third shape is used. For example, by setting the third shape to a shape that collapses in the horizontal or vertical direction that appears when the brush is stopped on paper, a handwriting line having a shape simulating “horizontal stop” or “vertical stop” in brush writing is used. Can be drawn.

  According to the fifteenth aspect, since the input positions are interpolated with an appropriate element image, a smooth line can be drawn when a line connecting the input positions is drawn.

  According to the sixteenth aspect, it is possible to perform a drawing process such as drawing a line along the locus of the slide operation on the touch panel, and it is possible to realistically display handwritten characters, figures, and the like corresponding to the touch operation.

  Further, according to the drawing processing apparatus of the present invention, the same effects as those of the above-described drawing processing program can be obtained.

  A drawing processing apparatus that executes a drawing processing program according to an embodiment of the present invention will be described with reference to the drawings. The drawing processing program of the present invention can be applied by being executed by an arbitrary computer system that can be displayed on the display device, but the drawing included in the game program executed by the game apparatus 1 as an example of the drawing processing device. This will be described using a processing program. FIG. 1 is an external view of a game apparatus 1 that executes the game program of the present invention. Here, a portable game device is shown as an example of the game device 1.

  In FIG. 1, the game apparatus 1 includes a first LCD (Liquid Crystal Display) 11 and a second LCD 12. The housing 13 includes an upper housing 13a and a lower housing 13b. The first LCD 11 is housed in the upper housing 13a, and the second LCD 12 is housed in the lower housing 13b. For example, the resolutions of the first LCD 11 and the second LCD 12 are both 256 dots × 192 dots. In this embodiment, an LCD is used as the display device. However, any other display device such as a display device using EL (Electro Luminescence) can be used. The first LCD 11 and the second LCD 12 can use any resolution.

  The upper housing 13a is formed with sound release holes 18a and 18b for releasing sound from a pair of speakers (the right speaker 30a and the left speaker 30b in FIG. 2) to be described later.

  The lower housing 13b has a cross switch 14a, a start switch 14b, a select switch 14c, an A button 14d, a B button 14e, an X button 14f, a Y button 14g, a power switch 14h, an L button 14L, and an R button as input devices. 14R is provided. The L button 14L and the R button 14R are not shown because they are provided on the upper side surface of the lower housing 13b and are arranged behind the upper housing 13a shown in FIG. Further, as a further input device, a touch panel 15 is mounted so as to cover the screen of the second LCD 12. The lower housing 13b is also provided with an insertion slot (indicated by a one-dot chain line in FIG. 1) for storing the memory card 17 and the stick 16.

  As the touch panel 15, an arbitrary type such as a resistive film type, an optical type (infrared type), and a capacitive coupling type can be used. The touch panel 15 is an example of a pointing device having a function of outputting coordinate data corresponding to the contact position when the surface of the touch panel 15 is touched with the stick 16. In the following description, it is assumed that the player touches the touch panel 15 with the stick 16, but it is of course possible to touch the touch panel 15 with a pen (stylus pen) or a finger instead of the stick 16. In the present embodiment, as the touch panel 15, for example, a touch panel having a resolution (detection accuracy) of 256 dots × 192 dots is used in the same manner as the resolution of the second LCD 12. However, the resolution of the touch panel 15 and the resolution of the second LCD 12 are not necessarily the same.

  The memory card 17 is a recording medium on which a game program or the like is recorded, and is detachably attached to an insertion port provided in the lower housing 13b.

  Next, the internal configuration of the game apparatus 1 will be described with reference to FIG. FIG. 2 is a block diagram showing the internal configuration of the game apparatus 1.

  In FIG. 2, a CPU core 21 is mounted on the electronic circuit board 20 accommodated in the housing 13. A connector 23 is connected to the CPU core 21 via a bus 22, an input / output interface circuit (referred to as I / F circuit in the drawing) 25, a first GPU (Graphics Processing Unit) 26, a second GPU 27, a RAM 24, The LCD controller 31 and the wireless communication unit 33 are connected. The memory card 17 is detachably connected to the connector 23. The memory card 17 includes a ROM 17a that stores a game program and a RAM 17b that stores backup data in a rewritable manner. The game program stored in the ROM 17a of the memory card 17 is loaded into the RAM 24, and the game program loaded into the RAM 24 is executed by the CPU core 21. In addition to the game program, the RAM 24 appropriately stores data for generating temporary data obtained by the CPU core 21 executing the program. The I / F circuit 25 is connected to the touch panel 15, the right speaker 30a, the left speaker 30b, and the operation switch unit 14 including the cross switch 14a and the A button 14d shown in FIG. The right speaker 30a and the left speaker 30b are arranged inside the sound holes 18a and 18b, respectively, and reproduce sound according to sound output information generated by the CPU core 21.

  A first VRAM (Video RAM) 28 is connected to the first GPU 26, and a second VRAM 29 is connected to the second GPU 27. In response to an instruction from the CPU core 21, the first GPU 26 generates a first display image based on data for generating a display image stored in the RAM 24, and draws the first display image in the first VRAM 28. Similarly, the second GPU 27 generates a second display image in accordance with an instruction from the CPU core 21 and draws it in the second VRAM 29. The first VRAM 28 and the second VRAM 29 are connected to the LCD controller 31.

  The LCD controller 31 includes a register 32. The register 32 stores a value of 0 or 1 according to an instruction from the CPU core 21. When the value of the register 32 is 0, the LCD controller 31 outputs the first game image drawn in the first VRAM 28 to the first LCD 11 and the second game image drawn in the second VRAM 29 as the second game image. Output to the LCD 12. When the value of the register 32 is 1, the first game image drawn in the first VRAM 28 is output to the second LCD 12, and the second game image drawn in the second VRAM 29 is output to the first LCD 11. To do.

  The wireless communication unit 33 has a function of exchanging data used for game processing and other data with the wireless communication unit 33 of other game devices. As an example, the wireless LAN standard of IEEE802.11. Provides wireless communication functions that comply with Then, the wireless communication unit 33 outputs the received data to the CPU core 21. Further, the wireless communication unit 33 transmits data instructed by the CPU core 21 to another game device.

  Note that the game program (drawing processing program) of the present invention may be supplied not only to the computer system through an external storage medium such as the memory card 17 but also to the computer system through a wired or wireless communication line. The game program may be recorded in advance in a non-volatile storage device inside the computer system. The information storage medium for storing the game program is not limited to the non-volatile semiconductor memory, but may be a CD-ROM, a DVD, or an optical disk storage medium similar to them.

  Next, with reference to FIG. 3 and FIG. 4, before a specific processing operation by the game program executed by the game apparatus 1 is described, the processing operation is displayed on the first LCD 11 and the second LCD 12. An example of a display form will be described. FIG. 3 is a diagram showing a screen display example displayed on the first LCD 11 and the second LCD 12. 4A to 4C are diagrams for explaining the relationship between the game image displayed on the second LCD 12 and the touch-operated position.

  In FIG. 3, game images are displayed on the first LCD 11 and the second LCD 12 of the game apparatus 1, respectively. For example, the first LCD 11 displays a game image showing characters and figures as examples of handwriting by the player touching the touch panel 15 using the stick 16. In FIG. 3, the Chinese character “I” is displayed as the model character M. On the other hand, the second LCD 12 displays a handwritten character C drawn along a trajectory when the player touches the touch panel 15 using the stick 16. FIG. 3 shows an example in which the player performs a handwriting input by touching the touch position TP of the touch panel 15 so as to match the model character M, and the handwritten character C drawn up to the position of the touch position TP is displayed. Has been.

  Here, the model character M is a character drawn in a brush type font such as a calligraphy. The handwritten character C is also represented by a line as if the player had drawn with a brush along the trajectory of the touch position TP. For example, when a line is drawn using a brush in the real world, the thickness of the line changes according to the drawing speed, the writing pressure, and the like. Further, as time elapses immediately after drawing with a brush, there is also a change in which the thickness of the line gradually increases (smudges). Furthermore, with a brush, a specially shaped line is drawn according to the insertion, stopping, splashing, and peeling of the brush. The handwritten character C in the present embodiment realistically expresses the above-described characteristics of the real world drawn by the brushstroke on the second LCD 12 according to the touch position TP.

  With reference to FIG. 4A to FIG. 4C, an example of processing for gradually increasing the thickness of a line as time elapses will be described. For example, when the player performs a touch operation that slides on the touch panel 15 (hereinafter referred to as a slide operation), the thinnest line is drawn at the latest touch position TP that has been touched. A relatively thick line is redrawn at a touch position that is traced back in time series (for example, the touch position TPa in FIGS. 4B and 4C). In FIG. 4A to FIG. 4C, the handwritten line portion of the handwritten character C is indicated by a hollow hatched area.

  Specifically, a target thickness Wt is provided for each touch position TP where the player touches the touch panel 15. That is, when the touch position TP moves according to the slide operation, the target thickness Wt is set for each touch position TP with respect to the history of the touch position TP. On the other hand, at the latest touch position TP where the player performs a touch operation, the thinnest line Wi0 is drawn. The line drawn with the thinnest thickness Wi0 changes and redraws so that the thickness gradually increases toward the target thickness Wt over time. As will be apparent from the following description, the handwritten character C in the present embodiment has an element image (for example, a drawing pattern described later) corresponding to the drawing thickness Wi and the input state (entering, stopping, etc.) at each touch position. By superimposing on the already drawn element image, the line thickness is enlarged and redrawn.

  For example, consider an example in which the state shown in FIG. 4A changes to the state shown in FIG. 4C through the state shown in FIG. 4B. In this operation example, the player performs a slide operation by moving the touch position TP in the input direction Di. The same target thickness Wt is set for each touch position TP set in accordance with the slide operation. FIG. 4A is a diagram illustrating an example of a state in which the player is touching the touch position TPa (that is, touch position TP = touch position TPa). FIG. 4B is a diagram illustrating an example of a state in which the player performs a slide operation by moving the touch position TP in the input direction Di after touching the touch position TPa. FIG. 4C is a diagram illustrating an example of a state in which the player further performs a sliding operation by moving the touch position TP in the input direction Di from the state illustrated in FIG. 4B.

  Here, attention is paid to the touch position TPa. In FIG. 4A, at the latest touch position TP where the player performs a touch operation, the line has the thinnest thickness Wi0. Therefore, in the state of touch position TP = touch position TPa, the line thickness Wa at the touch position TPa is also the thinnest thickness Wi0.

  Next, as shown in FIG. 4B, after the player touches the touch position TPa, the player performs a slide operation by moving the touch position TP in the input direction Di. By this sliding operation, the line thickness Wa at the touch position TPa changes so as to gradually increase toward the target thickness Wt with time. That is, a line is drawn such that the line thickness is thin at the touch position TP where the passage of time is short after the touch operation, and the line thickness is gradually thickened at the touch position TP where the passage of time is long. As a result, when the slide operation is performed by moving the touch position TP in the input direction Di, the locus traced back to the past touch position TPa side from the latest touch position TP corresponds to the passage of time from the thinnest thickness Wi0. A section Zc for gradually increasing the thickness of the line to the target thickness Wt and a section Zs reaching the target thickness Wt are formed. In the state of FIG. 4B, since the touch position TPa is included in the section Zc, the line thickness Wa at the touch position TPa is Wi0 <Wa <Wt.

  Next, as shown in FIG. 4C, from the state shown in FIG. 4B, the player further performs a slide operation by moving the touch position TP in the input direction Di. By this sliding operation, the line thickness Wa at the touch position TPa changes so as to further increase gradually toward the target thickness Wt as time elapses. Accordingly, the line thickness Wa at the touch position TPa eventually becomes the target thickness Wt, and the touch position TPa is a position included in the section Zs. As described above, the handwritten character C is drawn with the thinnest drawing pattern at the latest touch position TP, and has a drawing pattern thicker than the thinnest thickness Wi0 at a position going back from the touch position TP to the past touch position TPa. Redrawn. As a result, the second LCD 12 is redrawn so that the thickness of the line gradually increases as time passes immediately after the handwritten character C is drawn with a brush.

  Next, with reference to FIGS. 5 to 14, a specific processing operation by the game program executed on the game apparatus 1 will be described. FIG. 5 is a diagram showing an example of various data stored in the RAM 24 in response to executing the game program. FIG. 6 is a diagram illustrating an example of the point buffer stored in the RAM 24. FIG. 7 is a diagram illustrating an example of drawing pattern data in a slide state stored in the RAM 24. FIG. 8 is a diagram illustrating an example of drawing pattern data in an on state stored in the RAM 24. FIG. 9 is a diagram showing an example of connected drawing pattern data stored in the RAM 24. FIG. 10 is a diagram illustrating an example of a palette information table stored in the RAM 24. FIG. 11 is a flowchart in which the game apparatus 1 performs a game process by executing the game program. FIG. 12 is a subroutine showing the detailed operation of the target thickness calculation process in step 60 in FIG. FIG. 13 is a subroutine showing the detailed operation of the input state setting process in step 61 in FIG. FIG. 14 is a subroutine showing the detailed operation of the drawing process in step 62 in FIG. The program for executing these processes is included in the game program stored in the ROM 17a, and is read from the ROM 17a to the RAM 24 when the power of the game apparatus 1 is turned on. 21 is executed.

  In FIG. 5, the RAM 24 stores a program read from the ROM 17a and temporary data generated in the game process. In FIG. 5, the data storage area of the RAM 24 includes touch position data Da, touch-on instruction position data Db, point buffer data Dc, input position buffer data Dd, buffer distance data De, input distance data Df, and drawing data Dg. Stored.

  The touch position data Da stores data indicating touch coordinates indicating the touch position TP in the screen coordinate system where the player touches the touch panel 15. For example, the touch coordinates are acquired every time unit (for example, 1/60 seconds) in which the game apparatus 1 performs a game process, and stored and updated in the touch position data Da according to the acquisition.

  The touch-on instruction position data Db is data indicating instruction coordinates of an instruction position P (hereinafter sometimes referred to as a touch-on instruction position) designated in the virtual world in accordance with the touch position where the touch panel 15 is first touched on. Stored.

  The point buffer data Dc stores a point buffer in which the history of the designated position P and various data thereof are described. Hereinafter, the point buffer stored in the point buffer data Dc will be described with reference to FIG.

In FIG. 6, the count buffer, the target thickness, the drawing thickness, and the input state are described in the point buffer for each history for a predetermined period of the designated position P calculated from the touch position TP. The designated position P is a coordinate indicating a position overlapping with the touch position TP in a virtual world where the handwritten character C is drawn (hereinafter simply referred to as a virtual world), and is obtained by perspective-transforming the touch position TP into the virtual world. can get. For example, the designated position P is indicated by the coordinate value (x, y) of the xy coordinate system set in the virtual world, and data indicating the coordinate value (x, y) calculated according to the acquisition of the touch coordinates is provided. Is described in the point buffer. Hereinafter, the coordinate value indicating the designated position P is referred to as designated coordinates. In the point buffer, a history of the indicated position P that is acquired and calculated by a predetermined number of processing times from the touch position TP that is acquired by the current touch operation is described. In the example shown in FIG. 6, designated position histories for four times are described in buffer numbers 1 to 4, respectively. Specifically, buffer number 1 has designated coordinates (x ₁ , y ₁ ), and buffer number 2 has The designated coordinates (x ₂ , y ₂ ), the designated coordinates (x ₃ , y ₃ ) are described in buffer number ₃ , and the designated coordinates (x ₄ , y ₄ ) are written in buffer number 4. Here, among the data described in the point buffer, the designated position P described in the buffer number 1 (first) is the latest data, and the designated position P described in the buffer number 4 (last) is the oldest data. It is data of.

  In the point buffer, a target thickness Wt, a drawing thickness Wi set for each indicated position P, and an input state (sliding, entering, joining, stopping, etc.) are described. Specifically, the target thickness Wt1 and the drawing thickness Wi1 are set in the buffer number 1, the target thickness Wt2 and the drawing thickness Wi2 are set in the buffer number 2, the target thickness Wt3 and the drawing thickness Wi3 are set in the buffer number 3, and the buffer number 4 is set. The target thickness Wt4 and the drawing thickness Wi4 are respectively described, and the input state “slide” is described in all of the buffer numbers 1 to 4. In the point buffer, a current flag indicating which data is set to “current” is described. In the example of FIG. 6, the current flag “ON” is described in the data of the buffer number 1, and the data of the buffer number 1 is set to “current”.

  The input position buffer data Dd stores an input position buffer in which the history of the indicated position P for a predetermined period (for example, the past about 30 seconds) from the present to a predetermined time before is described.

  The buffer distance data De passes through the designated coordinates (x, y) described in the point buffer, and the designated position corresponding to the touch position where the player is currently touching the touch panel 15 (hereinafter referred to as the latest designated position and Data indicating the distance (buffer distance Lb) in the virtual world up to (which may be described) is stored. The input distance data Df stores data indicating the distance (input distance Li) in the virtual world from the touch-on instruction position to the latest instruction position.

  The drawing data Dg includes drawing pattern data Dg1, a palette information table Dg2, and the like. The drawing pattern data Dg1 is bitmap data indicating an example of an element image for displaying the handwritten character C on the game screen in the virtual world. The palette information table Dg2 is a data table indicating palette information that is referred to for each pixel value (bitmap information) indicated by the drawing pattern data. Hereinafter, the drawing pattern data Dg1 and the palette information table Dg2 will be described with reference to FIGS. In the element images (drawing patterns) shown in FIGS. 7 to 9, each rectangular area indicates one pixel, and bitmap information set for each pixel is illustrated. In the present embodiment, since the handwritten character C is displayed in an achromatic color, the color set for each pixel of the drawing pattern is also an achromatic color (white to gray to black).

  7 to 9, the drawing pattern data Dg1 has a plurality of drawing patterns for each input state (operation type for touch operation) set in accordance with the player's touch operation. For example, eight patterns corresponding to the drawing thickness Wi are set as the drawing pattern used in each input state. The drawing pattern stored in the drawing pattern data Dg1 corresponds to an example of an element image in the present invention.

  The bitmap information set for each pixel of the drawing pattern is represented by an integer value of 0 to 15, and the RGB value of each pixel is set by these numerical values. The relationship between the bitmap information and the RGB values is indicated by a palette information table stored in the palette information table Dg2.

  As shown in FIG. 10, bitmap information indicated by integer values of 0 to 15 corresponds to palette information indicating RGB values. For example, the RGB value of the palette information (255, 255, 255) corresponds to the bitmap information “0”, that is, the bitmap information “0” is information indicating white. The bitmap information “15” corresponds to the RGB value of the palette information (0, 0, 0), that is, the bitmap information “15” is information indicating black. In addition, the bitmap information “1” to “14” is information indicating gray, and when the numerical value of the bitmap information increases, RGB values that gradually increase in density are set as palette information. ing. More specifically, the palette information is information indicating 16 levels of RGB values having gradations of white to gray to black. Each of these 16 levels of palette information can be specified by bitmap information.

  FIG. 7 shows an example of a plurality of drawing patterns used when the input state is “slide”. In FIG. 7, as the drawing pattern used when the input state is “slide”, a substantially circular drawing pattern is set according to each drawing thickness Wi. Specifically, a substantially circular drawing pattern is set for each of the drawing thicknesses Wi of “1” to “8”. When the numerical value of the drawing thickness Wi increases, The area of bitmap information shown in gray is enlarged. Further, each drawing pattern has bitmap information having the highest density at the center (that is, the numerical value is large), and bitmap information in which the density gradually decreases from the center of the drawing pattern toward the outer edge (ie, the drawing pattern has a smaller value). , The numerical value decreases gradually).

  FIG. 8 shows an example of a plurality of drawing patterns used when the input state is “ON”. In FIG. 8, as the drawing pattern used when the input state is “ON”, a substantially teardrop-shaped drawing pattern is set according to each drawing thickness Wi. Specifically, each drawing pattern is set such that the most teardrop-shaped details are arranged in the upper left direction, and the width gradually increases toward the lower right direction. In other words, each drawing pattern imitates the shape that appears when a brush first comes into contact with paper, and is an image in which the tip of the brush tip is expressed relatively strongly. Each drawing pattern has a substantially teardrop-shaped drawing pattern for the drawing thickness Wi of “1” to “8”, and when the value of the drawing thickness Wi increases, The area of bitmap information shown in gray is enlarged according to the size. In addition, each drawing pattern has bitmap information with the highest density at the center, and has bitmap information in which the density gradually decreases from the center of the drawing pattern toward the outer edge.

  FIG. 9 shows an example of a plurality of drawing patterns used when the input state is “connection”. In FIG. 9, as the drawing pattern used when the input state is “connect”, a drawing pattern having an intermediate shape between a substantially circular shape and a substantially teardrop shape is set according to each drawing thickness Wi. Specifically, each drawing pattern is set in an intermediate shape between the drawing pattern used when the input state is “slide” and the drawing pattern used when the input state is “on”. . In other words, each drawing pattern is an image in which the sharpness of the brush tip is expressed, like the drawing pattern used when the input state is “On”, but slightly tilted in the left-right direction from the “On” image pattern. By taking the shape, the intermediate shape is expressed. Each drawing pattern has a drawing pattern having an intermediate shape with respect to the drawing thickness Wi of “1” to “8”. When the value of the drawing thickness Wi increases, The area of bitmap information shown in gray is enlarged according to the size. In addition, each drawing pattern has bitmap information with the highest density at the center, and has bitmap information in which the density gradually decreases from the center of the drawing pattern toward the outer edge.

  FIGS. 7 to 9 show an example of a plurality of drawing patterns used when the input states are “slide”, “enter”, and “connecting”, but other input is given to the drawing pattern data Dg1. A drawing pattern used in the state is also stored. For example, the drawing pattern data Dg1 also stores a drawing pattern used when the input state is “horizontal stop” or “vertical stop”. Also for these drawing patterns, similarly to the above drawing patterns, drawing patterns having unique shapes are set for the drawing thicknesses Wi of “1” to “8”, and the numerical value of the drawing thickness Wi is As the value increases, the area of the bitmap information shown in gray is enlarged according to the value. In addition, each drawing pattern has bitmap information with the highest density at the center, and has bitmap information in which the density gradually decreases from the center of the drawing pattern toward the outer edge.

  For example, the drawing pattern used when the input state is “lateral” is a shape obtained by extending the drawing pattern used when “sliding” in the horizontal direction. In addition, the drawing pattern used for “horizontal stop” may be a shape obtained by further expanding the shape extended in the horizontal direction vertically and horizontally. In other words, the drawing pattern used when the input state is “horizontal stop” is an image simulating the shape that appears when the pen pressure is increased and stopped while the brush is being written horizontally along the paper surface. . In addition, the drawing pattern used when the input state is “vertical stop” is a shape obtained by extending the drawing pattern used when “sliding” vertically. In addition, the drawing pattern used for the “vertical stop” may be a shape obtained by further expanding the shape extended in the vertical direction in the vertical and horizontal directions. In other words, the drawing pattern used when the input state is “vertical stop” is an image simulating the shape that appears when the pen pressure is increased and stopped while the brush is being written vertically along the paper surface. .

  Next, the operation of the game apparatus 1 will be described. First, when the power supply (power switch 14h) of the game apparatus 1 is turned on, a boot program (not shown) is executed by the CPU core 21, whereby the game program stored in the memory card 17 is loaded into the RAM 24. The Then, when the loaded game program is executed by the CPU core 21, the steps shown in FIGS. 11 to 14 (abbreviated as “S” in FIGS. 11 to 14) are executed.

  In FIG. 11, the CPU core 21 performs initial setting of the game (step 50), and advances the processing to the next step. For example, as an initial setting performed by the CPU core 21 in step 50, a model letter M to be drawn by the player is set in the virtual world and displayed on the first LCD 11. Then, the CPU core 21 initializes each game parameter stored in the touch position data Da, the touch-on instruction position data Db, the point buffer data Dc, the buffer distance data De, and the input distance data Df (for example, each numerical value is set). To 0). Further, all the bitmap information is set to 0 in order to display the handwritten character C on the second LCD 12 written in the second VRAM 29 or the like.

  Next, the CPU core 21 waits for the player to perform a touch operation on the touch panel 15, that is, determines whether or not the touch is on (step 51). Then, the CPU core 21 proceeds to the next step 52 in the case of touch-on. On the other hand, the CPU core 21 repeats the processing of step 51 when the player is not touching the touch panel 15, that is, when the touch is off.

  In step 52, the CPU core 21 acquires touch coordinates indicating the touch position TP of the screen coordinate system touching the touch panel 15, and advances the processing to the next step. For example, the CPU core 21 updates the touch coordinates stored in the touch position data Da using the acquired touch coordinates.

  Next, the CPU core 21 calculates data indicating the designated coordinates of the designated position P in the virtual world according to the touch position TP acquired in step 52, and stores the designated coordinates in the touch-on designated position data Db. (Step 53), the process proceeds to the next step. For example, the designated coordinates of the designated position P are obtained by perspective-transforming the touch coordinates of the touch coordinates TP into the virtual world. As an example. The designated coordinates are obtained by calculating the position on the two-dimensional plane of the virtual world displayed on the second LCD 12 so as to overlap the touch coordinates.

  Next, the CPU core 21 sets the target thickness Wt and the drawing thickness Wi of the indicated position P calculated in step 53 (step 54). Then, the CPU core 21 sets the input state of the calculated designated position P to “ON” (step 55), and advances the processing to the next step. For example, the CPU core 21 sets the target thickness Wt and the drawing thickness Wi to the predetermined thickness at the time of touch-on (for example, the target thickness Wt = minimum value 1 and the drawing thickness Wi = minimum value 1). Further, the CPU core 21 sets the input state to the input state at the time of touch-on (here, input state = “on”).

  Next, the CPU core 21 draws a drawing pattern corresponding to the drawing thickness Wi set at the indicated position P calculated in step 53 and the input state, and displays the drawing pattern on the second LCD 12 (step 56). The process proceeds to the next step. Specifically, the CPU core 21 calculates the drawing thickness Wi “1” and the drawing thickness Wi “1” from the drawing pattern data Dg1 based on the drawing thickness Wi “1” and the input state “entered” set in Steps 54 and 55. A drawing pattern of the input state “ON” is extracted (see FIG. 8). Then, the CPU core 21 instructs the second GPU 27 (see FIG. 2) to generate a game image in which the extracted drawing pattern is arranged at the designated coordinates (x, y) of the designated position P. In response to this instruction, the second GPU 27 writes bitmap information corresponding to the drawing pattern in the second VRAM 29 or the like. Then, the second GPU 27 refers to the palette information table Dg2 and outputs palette information corresponding to the bitmap information written in the second VRAM 29, and a game image corresponding to the drawing pattern is displayed on the second LCD 12. .

  Next, the CPU core 21 stores the designated coordinates (x, y) of the latest designated position P, the target thickness Wt, the drawing thickness Wi, and the input state in the latest position of the point buffer of the point buffer data Dc. (Step 57), the process proceeds to the next step. For example, the CPU core 21 moves the data of the buffer number i excluding the buffer number 4 (the oldest data storage position) stored in the point buffer (see FIG. 6) to the storage position of the buffer number i + 1. . Then, the CPU core 21 sets the designated coordinates (x, y), the target thickness Wt, the drawing thickness Wi, and the input state of the latest designated position P to the buffer number 1 (latest data storage position) of the point buffer. Describe. As a result of the processing in step 57, the storage positions of the three sets of data stored in the storage positions (buffer numbers 1 to 3) of the point buffer are sequentially lowered, and the latest instruction is sent to the latest storage position (buffer number 1). Each data set at the position P is stored.

  In step 57, the CPU core 21 uses the latest designated coordinates (x, y) of the designated position P to determine the locus of the touch position TP (that is, the locus of the designated position P). The data Dd is stored in the latest position of the input position buffer. Here, the input position buffer stores a history of designated coordinates (x, y) for a predetermined period (for example, for the past about 30 seconds) from the present to a predetermined time.

  Next, the CPU core 21 determines whether or not the player is not performing a touch operation on the touch panel 15, that is, touch-off (step 58). Then, the CPU core 21 proceeds to the next step 59 when the touch operation of the player is continuously performed, that is, when the touch is on. On the other hand, if the player is not touching the touch panel 15, that is, if it is a touch-off, the CPU core 21 ends the process according to the flowchart.

  In step 59, the CPU core 21 acquires touch coordinates indicating the touch position TP of the screen coordinate system touching the touch panel 15, and advances the processing to the next step. For example, the CPU core 21 updates the touch coordinates stored in the touch position data Da using the acquired touch coordinates.

  Next, the CPU core 21 performs a process of setting the target thickness Wt at the latest designated position P (step 60), and proceeds to the next step. The detailed operation of the target thickness calculation process will be described below with reference to FIG.

  In FIG. 12, the CPU core 21 refers to the point buffer of the point buffer data Dc, calculates the buffer distance from the latest designated position P (step 71), and proceeds to the next step. Here, the buffer distance Lb is a distance in the virtual world from each indicated coordinate (x, y) described in the point buffer to the latest indicated position P.

で算出できる。そして、バッファ距離Ｌｂは、各指示位置間の距離Ｌ_nを加算する、すなわち、
Ｌｂ＝Ｌ₀＋Ｌ₁＋Ｌ₂＋Ｌ₃
によって算出する。そして、ＣＰＵコア２１は、算出したバッファ距離Ｌｂを用いてバッファ距離データＤｅを更新する。 First, the CPU core 21 calculates the designated coordinates (x ₀ , y ₀ ) of the latest designated position P ₀ using the touch coordinates acquired in step 59. Then, the CPU core 21 passes through each indicated position described in the buffer numbers 1 to 4 of the point buffer (hereinafter referred to as indicated positions P _{1 to} P ₄ ) in the order of the touch operation until the latest indicated position P _0. Is calculated as the buffer distance Lb. Here, _if the designated coordinates of each designated position P _n are (x _n , y _n ), the distance L _n between the designated position P _n and the designated position P _{n + 1} is

It can be calculated by The buffer distance Lb is the sum of the distances L _n between the indicated positions.
Lb = L ₀ + L ₁ + L ₂ + L ₃
Calculated by Then, the CPU core 21 updates the buffer distance data De using the calculated buffer distance Lb.

Next, the CPU core 21 provisionally sets the target thickness Wt of the latest designated position P according to the buffer distance Lb (step 72), and proceeds to the next step. For example, the target thickness Wt is set to a positive value (for example, Wtd = 1, Wtu = 8) from a predetermined minimum value Wtd to the maximum value Wtu, and the determination minimum distance Ld (for example, Ld = 0. 5) and a determination maximum distance Lu (for example, Lu = 6.0) are provided. When the buffer distance Lb is equal to or smaller than the determination minimum distance Ld (Lb ≦ Ld), the target thickness Wt is set to the maximum value Wtu (that is, 8). When the buffer distance Lb is equal to or greater than the determination maximum distance Lu (Lb ≧ Lu), the target thickness Wt is set to the minimum value Wtd (that is, 1). When the buffer distance Lb is larger than the determination minimum distance Ld and smaller than the determination maximum distance Lu (Ld <Lb <Lu), the distance from the determination minimum distance Ld to the determination maximum distance Lu is linear from the maximum value Wtu to the minimum value Wtd. Wt = Wtu− (Wtu−Wtd) * (Lb−Ld) / (Lu−Ld)
Calculate the value calculated in. Then, the target thickness Wt is set to an integer obtained by rounding down, rounding up, or rounding off the calculated value.

Thus, the target thickness Wt is provisionally set according to the buffer distance Lb. Here, in the latest designated position P, the calculation of the moving speed at which the designated position P is changed and moved (hereinafter simply referred to as the moving speed) is calculated at each designated position in the past predetermined time from the designated position P. Typically, the moving speed of the indicated position P is calculated by summing the distances between P. In addition, the moving speed of the designated position P may be simply calculated from the distance between the latest designated position P and the previous designated position P (that is, the designated position P ₁ described in the buffer number ₁ ). Is possible. Therefore, the buffer distance Lb is a parameter indicating the moving distance of the touch position TP in a predetermined period, and indicates the moving speed of the input to the touch panel 15 by the player.

The calculation of the moving speed of the designated position P may use not only the distance between the designated positions P past the designated position P but also the distance between the designated positions P set after the designated position P. it can. For example, the moving speed of the designated position P ₂ described in the buffer number 2 of the point buffer is the distance between the designated positions P (distances L ₂ and L ₃ ) in the past predetermined time and the distance after the designated position P ₂ . It can be calculated by summing the distances (distances L ₀ and L ₁ ) between the designated positions P in a predetermined time. Then, using the moving speed of the calculated pointed position P _2, it is also possible to set the target thickness Wt2 designated position P _2. Further, the instruction position P is simply indicated by the distance between the instruction position P and the next instruction position P (that is, the instruction position P ₁ when calculating the moving speed of the instruction position P ₂ described in the buffer number ₁ ). It is also possible to calculate the moving speed of the position P. As described above, the moving speed of the designated position P for temporarily setting the target thickness Wt is the distance between the designated positions P at a predetermined time in the past from the designated position P and / or the predetermined position after the designated position P. It is possible to calculate using the distance between each indicated position P in time.

  Next, the CPU core 21 calculates the difference between the target thickness Wt temporarily set in step 72 and the target thickness Wt1 described in the latest data (buffer number 1) in the point buffer of the point buffer data Dc. . When the difference value is within a certain range (for example, the absolute value of the difference value is 2 or less), the CPU core 21 advances the process to the next step 76. On the other hand, if the difference value is outside a certain range (for example, the absolute value of the difference value is greater than 2), the CPU core 21 advances the process to the next step 75.

  In step 75, the CPU core 21 changes the provisionally set target thickness Wt of the latest designated position P to an integer that falls within the certain range (for example, an integer whose absolute value of the difference value is 2). Then, the process proceeds to the next step 76. For example, when the target thickness Wt = 8 is temporarily set with respect to the target thickness Wt1 = 5, the target thickness Wt = 7 is changed. Further, when the target thickness Wt = 1 is temporarily set with respect to the target thickness Wt1 = 5, the target thickness Wt = 3 is changed. Thus, the target thickness Wt of the latest designated position P is suppressed within a certain range from the previously set target thickness Wt1.

  In step 76, the CPU core 21 determines the target thickness Wt of the latest designated position P that is currently temporarily set or changed in step 75, and ends the processing by the subroutine.

  Returning to FIG. 11, after the target thickness calculation process in step 60, the CPU core 21 performs a process of setting the input state at the latest designated position P (step 61), and proceeds to the next step. Hereinafter, the detailed operation of the input state setting process will be described with reference to FIG.

  In FIG. 13, the CPU core 21 determines whether or not the input state of the touch operation of the player is entered (step 81). For example, if the distance in the virtual world from the touch-on instruction position stored in the touch-on instruction position data Db to the latest instruction position is within a predetermined distance (within a distance L0 described later), the CPU core 21 has an input state. Judged to be in. That is, it is determined that the input state is on during a period in which the player performs a sliding operation within a predetermined distance while touching the touch panel 15 from the position where the player touches the touch panel 15. Then, the CPU core 21 proceeds to the next step 84 when the input state is on. On the other hand, when the input state is not entered, the CPU core 21 proceeds to the next step 82.

  In step 82, the CPU core 21 determines whether or not the input state of the touch operation of the player is connected. As an example, the CPU core 21 determines that the period from when the input state of the touch operation of the player stops entering until a predetermined time elapses is a connection from the input state to the slide (basic drawing). . Then, when the input state is connected, the CPU core 21 proceeds to the next step 85. On the other hand, when the input state is not connected, the CPU core 21 proceeds to the next step 83.

  In step 83, the CPU core 21 determines whether or not the input state of the touch operation of the player is stopped. As an example, the CPU core 21 determines that the input state is stopped when the designated position is designated within a predetermined range for a predetermined time or longer. That is, when the speed of the slide operation of the player is reduced and the touch operation position remains within a predetermined range for a predetermined time or more, it is determined that the input state is stopped. Further, the CPU core 21 determines that the input state is to be stopped while the subsequent designated position P is designated within a certain range centered on the first designated position P that is determined to have been stopped. Then, the CPU core 21 proceeds to the next step 84 when the input state is stopped. On the other hand, when the input state is not stopped, the CPU core 21 proceeds to the next step 89.

  In step 84, the CPU core 21 determines whether or not the locus of the past designated position P up to the latest designated position P is in the horizontal direction. Then, the CPU core 21 proceeds to the next step 87 when the trajectory is in the horizontal direction. On the other hand, if the trajectory is in the vertical direction, the CPU core 21 proceeds to the next step 88.

  For example, in step 84, the CPU core 21 uses the history of the designated position P stored in the input position buffer and the latest designated position P to determine whether the input direction is horizontal or vertical. Judging. Specifically, the latest designated position P is used as a reference position, and the designated position P is sequentially referred to in the history of the input position buffer. Then, a past designated position Pp in which the length of the input locus traced back from the reference position is a predetermined length (for example, 6 dots) or more is extracted, and the positional relationship between the reference position and the designated position Pp is the horizontal direction and the vertical direction. It is judged whether it is either. Here, the horizontal direction and the vertical direction indicate the vertical and horizontal directions when the handwritten character C is displayed. For example, as shown in FIG. 3, when the game apparatus 1 is arranged so that the positional relationship between the first LCD 11 and the second LCD 12 is left and right, the left and right direction of the second LCD 12 is the horizontal direction, and the second LCD 12 The vertical direction is the vertical direction. Then, when the left and right direction of the second LCD 12 is the reference direction (0 °), the CPU core 21 has an angle between the reference direction and the reference position Pp and the reference direction of 0 ° or more. If it is less than 45 °, it is determined that the trajectory is in the horizontal direction. On the other hand, if the angle is not less than 45 ° and not more than 90 °, the CPU core 21 determines that the locus is the vertical direction.

  In the above-described example, the data at the designated position P stored in the input position buffer is used. However, the vertical / horizontal determination may be performed using other data. For example, even if the history of the designated position P stored in the point buffer and the latest designated position P are used, it is determined whether the direction connecting these designated positions P is the horizontal direction or the vertical direction. It doesn't matter. In this case, the same determination as described above is performed by using the angle between the reference direction and the average of the directions connecting the designated positions P stored in the point buffer.

  In step 85 to step 89, the CPU core 21 sets the input state of the latest designated position P according to the input state determination result in step 81 to step 84. That is, when it is determined that the input state of the touch operation of the player is on (Yes in step 81), the input state of the latest designated position P is set to on (step 85), and the processing by the subroutine is finished. To do. When it is determined that the input state of the touch operation of the player is the connection (Yes in step 82), the input state of the latest designated position P is set to the connection (step 86), and the processing by the subroutine is finished. When it is determined that the input state of the touch operation of the player is a lateral stop (Yes in Step 83 and Step 84), the input state of the latest designated position P is set to the lateral stop (Step 87), The processing by the subroutine is terminated. When it is determined that the input state of the touch operation of the player is vertical stop (Yes in step 83, No in step 84), the input state of the latest designated position P is set to vertical stop (step 88). Then, the processing by the subroutine is finished. Then, when it is determined that the input state of the touch operation of the player is entered, and neither the connection nor the stop is determined (No in Step 81 to Step 83), the input state of the latest designated position P is set to slide. (Step 89), the processing by the subroutine is terminated. As described above, the CPU core 21 determines the operation type touched by the player using the calculated designated position P and sets it as the input state.

  Returning to FIG. 11, after the input state setting process in step 61, the CPU core 21 performs a drawing process (step 62), and returns to step 57 to repeat the process. The detailed operation of the drawing process will be described below with reference to FIG.

  In FIG. 14, the CPU core 21 sets the drawing thickness Wi of the latest designated position P (step 91). For example, the CPU core 21 sets the drawing thickness Wi at the latest designated position P to a predetermined thickness (for example, the drawing thickness Wi = minimum value 1). Next, the CPU core 21 draws a drawing pattern corresponding to the input state of the latest designated position P set in step 61 and the drawing thickness Wi set in step 91, and displays it on the second LCD 12. Then (step 92), the process proceeds to the next step. Specifically, the CPU core 21 draws the drawing thickness of the corresponding input state from the drawing pattern data Dg1 based on the drawing thickness Wi (that is, the minimum value 1) set to the latest designated position P and the input state. A drawing pattern of “Wi” “1” is extracted (see FIG. 8 and the like). Then, the CPU core 21 instructs the second GPU 27 (see FIG. 2) to generate a game image in which the extracted drawing pattern is arranged at the designated coordinates (x, y) of the latest designated position P. A game image is displayed on the second LCD 12. Here, as described above, the bitmap information corresponding to the drawing pattern is written in the second VRAM 29 or the like at the time of the drawing process, but it is necessary to rewrite the bitmap information for the pixels to which the bitmap information has already been written. There is. This bitmap information rewriting process will be described later.

  Next, the CPU core 21 sets the data at the latest position (that is, point number 1) of the point buffer of the point buffer data Dc to be current (step 93), and advances the processing to the next step. For example, the CPU core 21 sets the current flag of point number 1 in the point buffer to ON and sets the current flags of other data to OFF.

Next, the CPU core 21 refers to the target thickness Wt of the data for which the current flag is set to ON in the point buffer, and sets the drawing thickness Wi according to the storage position (step 94). For example, if the target thicknesses Wt stored in the buffer numbers 1 to 4 are Wt1 to Wt4, and the drawing thicknesses Wi set to the buffer numbers 1 to 4 are Wi1 to Wi4, the drawing thicknesses Wi1 to Wi4 are , Each Wi1 = 1 (minimum value)
Wi2 = Wt2 × 2/4
Wi3 = Wt3 × 3/4
Wi4 = Wt4
Set by. Note that any of the calculated drawing thicknesses Wi1 to Wi4 is set to an integer value by rounding off, rounding down, or rounding up after the decimal point. Then, the CPU core 21 updates the drawing thickness Wi of the point buffer whose current flag is set to ON using the set drawing thickness Wi, and advances the processing to the next step.

  As will be apparent from the description below, the drawing thicknesses Wi1 to Wi4 described in the buffer numbers 1 to 4 move in descending order in the point buffer every time the process is repeated. The numerical value of Wi increases from the minimum value 1 to the target thickness Wt set at the same designated position P. That is, by the process of expanding the drawing thickness Wi to the target thickness Wt, the handwritten character C is drawn with the thinnest drawing pattern at the latest designated position P, and from the latest designated position P to the past designated position side. At the position going back, the image is redrawn with a drawing pattern having a drawing thickness Wi larger than the thinnest drawing thickness Wi. Thus, the second LCD 12 is redrawn so that the thickness of the line gradually increases as time passes immediately after the handwritten character C is drawn by touch operation (see FIGS. 4A to 4C). ). It can also be seen that the target thickness Wt set at each indicated position P also functions as the maximum value at which the drawing thickness Wi corresponding to the indicated position P increases.

  Next, the CPU core 21 draws a drawing pattern corresponding to the drawing thickness Wi and the input state set at the designated position P where the current flag is set to ON, and displays the drawing pattern on the second LCD 12 (step 95). ), The process proceeds to the next step. Specifically, the CPU core 21 refers to the drawing thickness Wi and the input state in which the current flag is set to ON in the point buffer, and corresponds to the drawing thickness Wi and the input state referred to from the drawing pattern data Dg1. Extract drawing pattern. Then, the CPU core 21 instructs the second GPU 27 to generate a game image in which the extracted drawing pattern is arranged at the designated coordinates (x, y) of the current designated position P. In response to this instruction, the second GPU 27 writes bitmap information corresponding to the drawing pattern in the second VRAM 29 or the like. Then, the second GPU 27 refers to the palette information table Dg2 and outputs palette information corresponding to the bitmap information written in the second VRAM 29, and a game image corresponding to the drawing pattern is displayed on the second LCD 12. . Here, when the bitmap information corresponding to the drawing pattern is written in the current designated position P, the bitmap information corresponding to the drawing pattern is already written in the same designated position P in the previous processing. Hereinafter, the bitmap information rewriting process will be described with reference to FIG. FIG. 15 is a diagram illustrating an example of rewriting bitmap information and an example of an image displayed in accordance with the bitmap information.

  In FIG. 15, for the bitmap information written in the second VRAM 29 or the like, an image example to be displayed is described for each bitmap information rewriting stage corresponding to each drawing pattern. Here, the bitmap information shown in FIG. 15 indicates the above-described 16-stage palette information (see FIG. 10) with an integer value of 0 to 15, and the RGB value of each pixel is set by these numerical values. The

  For example, in the initial stage when no drawing instruction is given, the bitmap information for each pixel is set to “0” because it is written in the display memory area such as the second VRAM 29 and the handwritten character C is displayed on the second LCD 12. Has been. In the initial stage, palette information (255, 255, 255) is designated for each pixel according to the bitmap information “0”, and an image in which all pixels are white is displayed.

  Next, in the first stage after the initial stage, 4 × 4 drawing in which bitmap information “5” is described in 2 × 2 pixels in the central area and bitmap information “0” is described in other pixels A pattern is written at the center position of the display memory area. At this time, the bitmap information of the corresponding pixel in the drawing pattern to be arranged is added to the bitmap information of each pixel that has already been written. When the addition result exceeds “15”, the bitmap information is set to “15”. As a result, bitmap information “5” is written in 2 × 2 pixels at the center position of the display memory area, and bitmap information “0” is written in other pixels. In the first stage, palette information (170, 170, 170) is designated for the central pixel in accordance with the bitmap information “5” or “0”, and palette information (255, 255, 255) is assigned to the other pixels. ) Is designated, an image is displayed in which the pixels in the central area are light gray and the pixels in the peripheral area are white.

  Next, in the second stage after the first stage, 4 × 4 pixels in which the bitmap information “7” is described in the 2 × 2 pixels in the central region and the bitmap information “5” is described in the other pixels. The drawing pattern is written at the same position in the display memory area as in the first stage. Also at this time, the bitmap information of the corresponding pixel in the drawing pattern to be arranged is added to the bitmap information for each pixel already written in the first stage. Specifically, since the bitmap information “5” is written in 2 × 2 pixels at the central position of the display memory area in the first stage, the bitmap of the central area of the drawing pattern is written in these pixels. Information “7” is added and rewritten to bitmap information “12”. Also, the bitmap information “5” described in the drawing pattern is written to the surrounding pixels of 2 × 2 pixels at the center position of the display memory area, and the bitmap information “0” is written to the other pixels. . In the second stage, palette information (51, 51, 51) is designated for the central pixel according to the bitmap information “12”, “5”, or “0”, and the surrounding pixels are designated. Palette information (170, 170, 170) is designated, and palette information (255, 255, 255) is designated for other pixels. Therefore, in the second stage, an image in which the pixels in the central region are dark gray, the pixels in the surrounding region are light gray, and the pixels in the surrounding region are white is redrawn and displayed.

  As described above, in the drawing processing according to the present embodiment, bitmap information is integrated for each pixel by designating overlapping drawing patterns. Therefore, since the gray pattern changes from gray to black by designating the gray pixels of the drawing pattern in an overlapping manner, the image changes to a dark image and is redrawn.

  Returning to FIG. 14, after the process of step 95, the CPU core 21 interpolates and sets the drawing thickness Wi and the input state between the designated positions from the latest designated position P to the designated position P designated as the current ( Step 96), The process proceeds to the next step.

  For example, when the player moves the touch position TP greatly at high speed, the calculated interval between the designated positions P is relatively large. As described above, when the interval between the designated positions P is widened, the space between the drawn drawing patterns is widened, and the line thickness of the handwritten character C varies. In order to eliminate such variation in line thickness, in step 96, the drawing thickness Wi and the input state for drawing the drawing pattern are set between the indicated positions P by interpolation.

  As an example of the processing in step 96, consider an example in which the drawing thickness Wi and the input state between the first designated position P1 and the second designated position P2 are set by interpolation. Here, the drawing thickness Wi1 is set to the first designated position P1, the drawing thickness Wi2 is set to the second designated position P2, and the first designated position P1 and the second designated position P2 are The distance between them is assumed to be X (specifically, X pixel). For example, if the difference between the drawing thickness Wi1 and the drawing thickness Wi2 is 1 or less, the drawing thickness Wi1 or the drawing thickness Wi1 for each pixel between the first designated position P1 and the second designated position P2, respectively. The drawing thickness Wi2 is set for interpolation. If the difference between the drawing thickness Wi1 and the drawing thickness Wi2 is 2 or more (assumed to be n), the X pixel is divided according to the difference, and the numerical values from Wi1 to Wi2 are set for each divided section. Interpolation is set as the drawing thickness Wi. For example, when Wi1 <Wi2, the drawing thickness Wi1 + 1 is set for each pixel in the section from the first designated position P1 to the X / n pixel. Further, the drawing thickness Wi1 + 2 is set to be interpolated for each pixel in the section from the next X / n pixel to the 2X / n pixel. Then, the drawing thickness Wi2 is set to be interpolated for each pixel in the section from (n−1) X / n pixels to the second designated position P2. In any case, the input state for each pixel between the first designated position P1 and the second designated position P2 is the input state set to the first designated position P1 or the second designated position. Interpolation is set to the input state set in P2.

  Next, the CPU core 21 draws a drawing pattern corresponding to the drawing thickness Wi and the input state set for the interpolation in each pixel in the above step 95 on each pixel and displays them on the second LCD 12 (step 97). ), The process proceeds to the next step. Since the drawing process in step 97 is the same as the drawing process in step 95 described above, detailed description thereof is omitted.

  Next, the CPU core 21 determines whether or not the current flag at the oldest position (that is, buffer number 4) in the point buffer is set to ON (step 98). When the current flag other than the oldest position (that is, buffer numbers 1 to 3) is set to ON, the CPU core 21 changes the current flag of the data for which the current flag is set to OFF. Then, the current flag of the data described in the oldest one of the data is changed to ON (step 99), and the process returns to step 94 to repeat the process. On the other hand, when the current flag at the oldest position is set to ON, the CPU core 21 ends the processing by the subroutine.

  Next, display examples of the handwritten character C drawn by the processing based on the above-described flowchart will be described with reference to FIGS. FIG. 16 is a diagram illustrating an example of the handwritten character C when the input state of the player changes from “enter” → “connect” → “slide”. FIG. 17 is a diagram illustrating an example of the handwritten character C when the input state of the player changes from “slide” to “stop”. FIG. 18 is a diagram illustrating an example of the handwritten character C when the player's input state is “slide” and the touch panel 15 is touched off. 16 to 18, in order to explain the internal state of the handwritten line of the handwritten character C, the handwritten character C that is actually displayed as a solid line is illustrated by a hollow line. Also, in FIGS. 16 to 18, the trajectory T on which the player slides on the touch panel 15 is indicated by broken lines.

  In FIG. 16, when the player touches on the designated position P0 on the touch panel 15 (ie, the touch-on designated position P0), the input state is set to “ON” (step 55 in FIG. 11). Then, the input state is set to “ON” during the period in which the player slides within a predetermined distance (distance L0) from the touch-on instruction position P0 (Yes in step 81 in FIG. 13) (step in FIG. 13). 85; entering section of FIG. In the drawing process in this entering section, a drawing pattern used when the input state is “entering” is used. Here, as described with reference to FIG. 8, the drawing pattern used when the input state is “ON” imitates the shape that appears when the brush first touches the paper. The “entering” shape of the brush is also expressed in

  Thereafter, during a period from when the player slides from the touch-on instruction position P0 to the position exceeding the distance L0 at the instruction position P1 until a predetermined time elapses (Yes in step 82 in FIG. 13), the input state is “connection”. (Step 86 in FIG. 13; connecting section in FIG. 16). In the drawing process in this connection section, a drawing pattern used when the input state is “connection” is used. Here, as described with reference to FIG. 9, the drawing pattern used when the input state is “connect” and the drawing pattern used when the input state is “enter” and the substantially circular drawing pattern (that is, Since the input state is an intermediate shape with “slide”), the handwritten character C also represents the shape of the connection from the “enter” shape of the writing brush to the basic stroke (slide).

  Furthermore, during a period after the player touches the designated position P2 after a predetermined time has elapsed from the time when the designated position P1 is touch-operated (No in steps 81 to 83 in FIG. 13), the input state is “ “Slide” is set (step 89 in FIG. 13; slide section in FIG. 16). In the drawing process in the slide section, a drawing pattern used when the input state is “slide” is used. Here, as described with reference to FIG. 7, since the drawing pattern used when the input state is “slide” is substantially circular, the handwritten character C represents a shape indicating a basic drawn line.

  In FIG. 17, when the designated position P within a predetermined range is designated for a predetermined time or more after the player's input state is “slide” and the slide operation is performed in the horizontal direction (Yes in step 84 of FIG. 13; 17 between the designated positions P3 to Pe), the input state is set to "side stop" (step 87 in FIG. 13). Then, until the player touches off from the touch panel 15 at the designated position Pe, the input state is set to “side stop” (stop section in FIG. 17). In the drawing process in this stop section, a drawing pattern used when the input state is “lateral stop” is used. Here, as described above, the drawing pattern used when the input state is “horizontal stop” is a shape that appears when the pen pressure is increased and stopped in a state where the brush is written horizontally along the paper surface. Since it is imitating, the “side-stop” shape of the writing brush is also expressed in the handwritten character C.

  In FIG. 18, when the player slides on the touch panel 15 and touches off so as to draw “Splash” or “Harai” in brush writing, the input state of the player remains “slide” and the touch is turned off from the designated position Pe. (Slide section in FIG. 18). In such a slide operation, the player touches off while accelerating the movement of the touch position TP in the slide operation. Therefore, the buffer distance Lb described above also tends to be shortened according to the movement of the touch position TP, and the target thickness Wt becomes smaller toward the designated position Pe. In addition to this, drawing is performed with the thinnest drawing pattern at the latest designated position Pe, and redrawing is gradually performed with a thick drawing pattern at a position retroactive from the designated position Pe to the past designated position side. Accordingly, the touched-off designated position Pe has a shape that is significantly tapered compared to the position traced back to the past designated position side, and is displayed in a shape like “Splash” or “Harai” in brush writing. .

  As described above, in the processing by the game apparatus 1 described above, drawing is performed with the thinnest drawing pattern at the designated position P that overlaps with the latest touch position TP, and relative to the position pointed back from the designated position P to the past designated position side. The handwritten character C redrawn with a thick drawing pattern is displayed. As a result, the second LCD 12 is drawn so that the thickness of the line gradually increases as time passes immediately after the handwritten character C is drawn by touch operation. Thus, realistic drawing becomes possible. Further, since the target thickness Wt set at each indicated position P changes according to the speed of the touch operation, a more realistic handwritten character C can be drawn. Furthermore, since the drawing pattern used when drawing the handwritten character C is set in a different shape depending on the input state of the player, characteristic shapes such as “enter” and “stop” in brush writing are also expressed realistically. can do.

  In the above-described embodiment, as an example of the liquid crystal display unit for two screens, a case where the first LCD 11 and the second LCD 12 that are physically separated are arranged one above the other (in the case of two screens) is described. did. However, the configuration of the display screen for two screens may be other configurations. For example, the first LCD 11 and the second LCD 12 may be arranged on the left and right on one main surface of the lower housing 13b. In addition, a vertically long LCD having the same horizontal width as the second LCD 12 and having a vertical length twice as long (that is, a single LCD having a vertical display size of two screens) is placed below. Arranged on one main surface of the side housing 13b, the two game images (that is, the image showing the model letter M and the image showing the handwritten letter C) are displayed vertically (that is, adjacent to each other without the upper and lower boundary portions). Display). In addition, a horizontally long LCD having the same vertical width as that of the second LCD 12 and having a width twice as large as that of the second LCD 12 is disposed on one main surface of the lower housing 13b, so that two game images are displayed in the horizontal direction. You may comprise so that it may display on right and left (namely, it displays adjacently, without the boundary part on either side). That is, two game images may be displayed by physically dividing one screen into two. Regardless of the image format, the present invention can be similarly realized if the touch panel 15 is disposed on the screen on which the game image displayed on the second LCD 12 is displayed. When the two game images are displayed by physically dividing one screen into two, the touch panel 15 may be disposed on the entire screen.

  In the embodiment described above, the touch panel 15 is integrally provided on the game apparatus 1. However, it goes without saying that the present invention can be realized even if the game apparatus and the touch panel are configured separately. Alternatively, the touch panel 15 may be provided on the upper surface of the first LCD 11 to display the game image displayed on the second LCD 12 described above on the first LCD 11. Furthermore, although two display screens (first LCD 11 and second LCD 12) are provided in the above embodiment, the number of display screens may be one. That is, in the above-described embodiment, the first LCD 11 may not be provided, and the touch panel 15 may be provided using only the second LCD 12 as a display screen. In the above embodiment, the touch panel 15 is provided on the upper surface of the first LCD 11 without providing the second LCD 12, and the game image displayed on the second LCD 12 is displayed on the first LCD 11. Also good.

  Moreover, in the said Example, although the touch panel 15 was used as an input means of the game device 1 which implement | achieves a coordinate input, you may use another pointing device. Here, the pointing device is an input device that specifies an input position and coordinates on the screen. For example, a mouse, a trackpad, a trackball, or the like is used as an input means, and is calculated from an output value output from the input means. The present invention can be similarly realized by using the position information of the screen coordinate system.

  In this case, if the position information of the screen coordinate system is handled as the touch position TP in the above-described processing, the present invention can be realized. However, the determination of touch-on or touch-off in the above-described process is substituted by the presence or absence of other input from the input means that is different from the input of the position information. For example, the touch-on or touch-off determination is substituted depending on whether or not an operation button provided in the input unit is being pressed (for example, when the mouse is right-clicked or left-clicked).

  In addition, in the case of a stationary game device in which a player holds a game controller and enjoys a game, a pointing device of another aspect is also conceivable. For example, a camera fixed to the housing of the game controller can be used as the pointing device. In this case, the captured image captured by the camera changes in accordance with the change in position indicated by the housing of the game controller. Therefore, by analyzing this captured image, it is possible to calculate the coordinates indicated by the housing with respect to the display screen.

  In this case, the present invention can be realized by handling the coordinates indicating the position indicated by the housing as the touch coordinates in the above-described processing. However, the determination of touch-on or touch-off in the above-described processing is substituted by the presence or absence or change of other inputs from the game controller different from the coordinate input. As a first example, the touch-on or touch-off determination is substituted depending on whether an operation button provided in the game controller is pressed (for example, touch-on when the A button is pressed). In the second example, the game controller is composed of two housings. These two housings are composed of one housing on which the camera is mounted and the other housing on which a detection unit such as an acceleration sensor that outputs a signal corresponding to the movement of the other housing is fixed. The In this case, the touch-on or touch-off determination is substituted according to the movement of the other housing (for example, touch-on when the housing is tilted in a predetermined direction). In the third example, voice input means such as a microphone is provided in the housing of the game controller. In this case, a determination that the touch-on and the touch-off are switched when the player makes a predetermined sound is substituted.

  In the above-described drawing process, an example in which the color density displayed by adding bitmap information is increased when redrawing with overlapping drawing patterns is shown. You can draw. For example, a black RGB value (0, 0, 0) is normalized by a value of 1 to 0 from a white RGB value (255, 255, 255), and the normalized value is handled as bitmap information. The bitmap information set in this way approaches black (that is, “0”) by multiplying bitmap information other than white (that is, “1”). In this way, when redrawing with overlapping drawing patterns, the drawing process may be performed so that the color density displayed by multiplying the bitmap information is increased.

  In the above-described example, a drawing pattern is used as an example of an element image arranged at the designated position P. However, an element image of another aspect may be used. For example, a process of drawing a circle with a predetermined radius (for example, drawing thickness Wi) centered on each indicated position P is performed. Thereby, a circular element image is arranged at each indicated position P, and the above-described handwritten character C can be drawn by overlapping each other.

  In the above description, the count flag, the target thickness, the drawing thickness, and the input state are described in the point buffer for each history of each indicated position P. However, any data may not be described. . For example, the drawing thickness can be calculated from the target thickness and the buffer number described as described above. Therefore, the drawing thickness may be calculated and acquired from each target thickness for each process. As for the input state, if the input state set for the latest indicated position P is always the input state of each indicated position P described in the point buffer, the input state history is described in the point buffer. You don't have to. In this case, the drawing pattern corresponding to the input state set to the latest designated position P is redrawn at the designated position P to be redrawn (that is, the designated position P stored in the point buffer). become.

  In the above-described embodiment, an example in which the handwritten character C is drawn according to the touch input of the player is used. However, other objects may be drawn. For example, it goes without saying that the present invention can be similarly applied to a process of drawing a figure or a picture. In the above description, an example in which white to gray to black achromatic handwritten characters C are drawn is used. However, handwritten characters C of other colors can be drawn. In this case, if the pallet information in the pallet information table shown in FIG. 10 is adjusted according to the bitmap information according to the character color to be drawn, the present invention can be obtained by the same process even for the chromatic handwritten character C. Can be realized.

  Further, the pointing device in the stationary game device in which the player holds the game controller and enjoys the game may be provided outside the housing of the game controller. As an example, by taking a picture of the housing from the outside of the housing with a camera and analyzing the image of the housing imaged in the captured image, coordinates indicating the position pointed to by the housing with respect to the display screen can be calculated. Is possible. Furthermore, a system in which a unit fixed to the housing and a unit separately provided outside the housing may be used. In this example, a light emitting unit is separately provided outside the housing, and light from the light emitting unit is photographed by a camera fixed to the housing. By analyzing the captured image captured by this camera, the coordinates indicated by the housing with respect to the display screen can be calculated.

  In the above embodiment, the portable game apparatus 1 and the stationary game apparatus have been described. However, the drawing processing program of the present invention is executed by an information processing apparatus such as a general personal computer, and the present invention. May be realized.

  In addition, the shape of the game apparatus 1 described above and the shapes, numbers, and installation positions of the various operation buttons 14 and the touch panel 15 provided on the game apparatus 1 are merely examples, and other shapes, numbers, and installation positions. However, it goes without saying that the present invention can be realized. Further, it is needless to say that the present invention can be realized even if the set number and shape of the drawing pattern described above, various set values, determination values, and the like are merely examples.

  Although the present invention has been described in detail above, the above description is merely illustrative of the present invention in all respects and is not intended to limit the scope thereof. It goes without saying that various improvements and modifications can be made without departing from the scope of the present invention.

  The drawing processing program and the drawing processing apparatus of the present invention enable more realistic drawing in a drawing process according to coordinate input by a pointing device, and display characters, figures, and the like input by handwriting using the coordinate input on the display device. It is useful as a device or a program executed by the device.

1 is an external view of a game apparatus 1 that executes a game program according to an embodiment of the present invention. The block diagram which shows the internal structure of the game device 1 of FIG. The figure which shows the example of a screen display displayed on 1st LCD11 and 2nd LCD12 of FIG. The figure which shows the state of the 1st step for demonstrating the relationship between the game image displayed on the 2nd LCD12 of FIG. 1, and the position operated by touch. The figure which shows the state of the 2nd step for demonstrating the relationship between the game image displayed on the 2nd LCD12 of FIG. 1, and the position operated by touch. The figure which shows the state of the 3rd step for demonstrating the relationship between the game image displayed on 2nd LCD12 of FIG. 1, and the position operated by touch. The figure which shows an example of the various data memorize | stored in RAM24 according to running the game program which concerns on one Embodiment of this invention. The figure which shows an example of the point buffer memorize | stored in RAM24 of FIG. The figure which shows an example of the drawing pattern data of the slide state memorize | stored in RAM24 of FIG. The figure which shows an example of the drawing pattern data of the entering state memorize | stored in RAM24 of FIG. The figure which shows an example of the drawing pattern data of the connection state memorize | stored in RAM24 of FIG. The figure which shows an example of the palette information table memorize | stored in RAM24 of FIG. The flowchart with which the game device 1 performs a game process by executing the game program which concerns on one Embodiment of this invention. A subroutine showing the detailed operation of the target thickness calculation process in step 60 in FIG. A subroutine showing the detailed operation of the input state setting process in step 61 in FIG. A subroutine showing the detailed operation of the drawing process in step 62 in FIG. An example of rewriting bitmap information and an image displayed according to the bitmap information The figure which shows an example of the handwritten character C when the input state of a player changes from "on"-> "connect"-> "slide" The figure which shows an example of the handwritten character C when the input state of a player changes from "slide"-> "stop" The figure which shows an example of the handwritten character C when a player's input state is "slide" and it is touched off from the touch panel 15

Explanation of symbols

1 game device 11 first LCD
12 Second LCD
13 Housing 13a Upper housing 13b Lower housing 14 Operation switch 14a Cross switch 14b Start switch 14c Select switch 14d A button 14e B button 14f X button 14g Y button 14h Power switch 14L L button 14R R button 15 Touch panel 16 Stick 17 Memory card 17a ROM
17b RAM
18a, 18b Sound release hole 20 Electronic circuit board 21 CPU core 22 Bus 23 Connector 24 RAM
25 I / F circuit 26 1st GPU
27 Second GPU
28 First VRAM
29 Second VRAM
30a Right speaker 30b Left speaker 31 LCD controller 32 Register 33 Wireless communication unit

Claims (17)

A drawing processing program executed by a computer that causes a display device to display a drawing corresponding to an output from a pointing device that outputs an input position,
Input position acquisition means for repeatedly acquiring the input position from the pointing device;
Drawing means for drawing a predetermined element image at the latest input position acquired by the input position acquisition means and displaying the image on the display device;
A drawing processing program for causing the computer to function as redrawing means for drawing an element image having a display size larger than the predetermined element image at a past input position acquired by the input position acquisition means and displaying the element image on the display device . A size selection for selecting an element image having a display size that increases gradually according to the order acquired by the input position acquisition unit for each of a plurality of past input positions that are traced back in time series from the latest input position. As a means, further function the computer,
The drawing processing program according to claim 1, wherein the redrawing unit draws an element image selected by the size selection unit for each of the plurality of input positions and displays the element image on the display device.   The redrawing means determines a maximum value of the display size of the element image at the input position according to the input moving speed at the past input position, and sets the display size of the element image to be drawn for the input position. The drawing processing program according to claim 2, wherein the drawing processing program is limited to a maximum value. When drawing the element image for the past input position by the redrawing means, the input position acquired by the input position acquisition means is used to move the input at the input position with respect to each past input position. As the input speed calculation means for calculating the speed, the computer is further functioned,
For each of the past input positions, the redrawing unit decreases the maximum value as the moving speed increases according to the moving speed of the input at the past input positions calculated by the input speed calculating unit. The drawing processing program according to claim 3, wherein the maximum value of each input position is determined. Using the input position acquired by the input position acquisition means, input speed calculation means for calculating the moving speed of the input at the latest input position;
Based on the moving speed calculated by the input speed calculating means, further causing the computer to function as a storing means for storing information on the moving speed for each input position,
For each of the past input positions, the redrawing unit refers to the information about the moving speed for each input position stored by the storing unit, and the maximum value increases as the moving speed at each input position increases. The drawing processing program according to claim 3, wherein the maximum value of each input position is determined so that becomes smaller. The drawing means draws an element image having a preset minimum display size at the latest input position,
The redrawing means draws an element image having a display size larger than the minimum display size at a past input position that is time-sequentially traced from the latest input position, and further displays the element image having a larger display size. The drawing processing program according to claim 1, wherein drawing is performed at a past input position that is further back in time series from the past input position.   3. The size selection unit according to claim 2, wherein the size selection unit selects, as the element image, a drawing pattern corresponding to each of the input positions acquired by the input position acquisition unit from a plurality of drawing sizes of display sizes stored in a memory. Drawing processing program.   The re-rendering means has already rendered an element image composed of pixels having a relatively dark color density at the center and pixels having a relatively light color density around the center at the past input position. The drawing processing program according to claim 1, wherein the drawing processing program is drawn in a superimposed manner on the element image. An operation type determination unit that determines an operation type in which a user is operating the pointing device at the latest input position in accordance with an acquisition history of the input position acquisition unit;
The computer further functions as a type selection unit that selects a type of element image to be used from a plurality of types of element images according to the operation type determined by the operation type determination unit with respect to the latest input position. Let
The drawing unit and the redrawing unit each draw an element image of a type selected according to an operation type at the latest input position at the latest input position and the past input position, respectively. The drawing processing program described. An operation type determination unit that determines an operation type in which the user operates the pointing device at each input position according to the acquisition history of the input position acquisition unit;
The computer further functions as a type selection unit that selects a type of element image to be used from a plurality of types of element images according to the operation type determined for each input position by the operation type determination unit. Let
The drawing processing program according to claim 1, wherein the drawing unit and the redrawing unit each draw an element image of a type selected according to an operation type at each input position, at each input position. When the input position acquisition unit first acquires the input position, the operation type determination unit determines that the user is operating the pointing device with the operation type in the input start state with respect to the input position. And when the input position acquisition means continuously acquires the input position, it is determined that the user is operating the pointing device with the operation type in the input continuation state for the input position,
The type selection unit determines that the element image of the first shape classified into the operation type is the input start state in response to the operation type determination unit determining that the operation type is the input start state. In response to the selection corresponding to the input position and the operation type determining means determining that the operation type is in the input continuation state, the first shape that is classified into the operation type is different from the first shape. The drawing processing program according to claim 9 or 10, wherein an element image having a shape of 2 is selected in correspondence with the input position determined as the input continuation state.   When the input position acquired by the input position acquisition unit is within a predetermined range centered on the first input position, the operation type determination unit operates the input start state with respect to the acquired input position. The drawing processing program according to claim 11, wherein it is determined that the pointing device is operated in a type.   The type selection means has an intermediate shape between the first shape and the second shape until the predetermined condition is satisfied after the operation type determination means determines that the operation type in the input start state has ended. The drawing processing program according to claim 11, wherein an element image is selected corresponding to the input position. The operation type determination unit determines that the user is operating the pointing device with the operation type in the input end state when the input position repeatedly acquired by the input position acquisition unit is within a predetermined range for a predetermined time or more. And
The type selection means is a third type different from the first shape and the second shape classified into the operation type in response to the operation type determination means determining the operation type in the input end state. The drawing processing program according to claim 11, wherein a drawing pattern having a shape of 1 is selected corresponding to the input position. The size selection unit is configured to display an element image having a display size for linearly interpolating the size of the element image selected at the input position before and after the interpolation with respect to the position to be interpolated between the input positions acquired by the input position acquisition unit. , Select further,
The redrawing unit draws the element image selected by the size selection unit at each of the input position and the position where the input position is interpolated by the element image setting unit, and displays the element image on the display device. Item 3. The drawing processing program according to Item 2. The pointing device is a touch panel that covers a display screen of the display device,
The drawing processing program according to claim 1, wherein the input position acquisition unit acquires touch coordinate data output from the touch panel as the input position. A drawing processing device that displays on a display device a drawing corresponding to an output from a pointing device that outputs an input position,
Input position acquisition means for repeatedly acquiring the input position from the pointing device;
Drawing means for drawing a predetermined element image at the latest input position acquired by the input position acquisition means and displaying the image on the display device;
A drawing processing apparatus comprising: a redrawing unit that draws an element image having a display size larger than the predetermined element image at a past input position acquired by the input position acquisition unit and displays the element image on the display device.

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