JP2623416B2 - 3D graphics processor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a graphic processing apparatus for drawing a three-dimensional graphic with the aid of a computer, and more particularly, to making it easy to understand the relationship between the size and distance of a three-dimensional graphic displayed three-dimensionally. An auxiliary graphic to be shown can be drawn on the screen by a simple operation.

[0002]

2. Description of the Related Art Computer-assisted graphic processing apparatuses are capable of performing efficient drawing through data processing of graphics, and are therefore widely used in architectural design and creation of various images and graphics. In this graphic processing device, as the computer speeds up and the storage capacity increases, a three-dimensional graphic is displayed on a display screen, the three-dimensional graphic is appropriately deformed, and a projection of the three-dimensional graphic is displayed. Various operations such as drawing can be performed.

When a three-dimensional figure is displayed on a screen, even if the three-dimensional figure has the same size, when it is far away,
It is drawn smaller than when it is nearby. Therefore, when a plurality of three-dimensional figures are displayed at a distance from each other, it is very difficult to accurately recognize the size relationship and the distance between the three-dimensional figures.

In a conventional graphic processing apparatus, when comparing the sizes of two three-dimensional figures displayed at a distance from each other, the size of the three-dimensional figure is superimposed on the other three-dimensional figure so as to reduce the size. A method to confirm is adopted.

FIG. 25 shows an operation procedure in this case. First, the x, y, and z coordinate axes 44, the three-dimensional figure 42 on the near side, and the three-dimensional figure 41 on the rear side are displayed on the initial screen (a). The operator operates the mouse 45 to move the cursor 43
Is moved to the position of one of the three-dimensional figures 41 to be compared, and the mouse button 46 is depressed.
Start moving 45. By this operation, the display of the designated three-dimensional figure 41 is emphasized, and the shadow 47 of the three-dimensional figure 41
It is displayed on the z plane (b).

[0006] With the mouse button 46 held down,
By operating 45, the cursor 43 is moved in the direction of the three-dimensional figure 42. By this operation, the three-dimensional figure 41 and its shadow 47 move in the direction of the three-dimensional figure 42 (c). The operator stops pressing the mouse button 46 when the shadow 47 moves over the three-dimensional figure 42 (d). By doing so, the shadow 47 of the three-dimensional figure 41 overlaps the three-dimensional figure 42, and the operator confirms the size of the three-dimensional figure 41 with respect to the three-dimensional figure 42 by comparing the size of the shadow 47 and the three-dimensional figure 42. be able to.

A graphic processing apparatus for performing this operation is shown in FIG.
As shown in the figure, a mouse input information reading unit 22 for reading information on a mouse cursor depressed position and a designation for discriminating a designated graphic element (vertex, ridge line, surface) based on the position information A graphic element determining unit 23, a three-dimensional graphic editing unit 24 that reads an editing instruction specified by an operator from a mouse operation pattern, a three-dimensional graphic data storage unit 21 that stores graphic data of a three-dimensional graphic, A three-dimensional figure generation processing unit 25 that calculates figure data of a three-dimensional figure that changes with a shadow, a shadow generation processing unit 26 that calculates figure data related to shadows, and displays a three-dimensional figure and a shadow on a screen based on these figure data And a display processing unit 27 that performs the processing.

[0008] A three-dimensional figure data storage unit of the figure processing apparatus.
21 stores the graphic data of the three-dimensional figure 41 and the three-dimensional figure 42 displayed on the initial screen, and the designated figure element determining unit 23 compares the figure data with the position information read by the mouse input information reading unit 22. To determine what the specified graphic element is.

When the mouse 45 is moved, the three-dimensional figure editing unit 24 moves the mouse cursor 43 in a state where the mouse button 46 is depressed, based on the information output from the designated figure element determining unit 23. The movement of the designated graphic element is read from the position of the graphic element of the graphic 41, and the data indicating the movement amount of the designated graphic element is transferred to the three-dimensional graphic data storage unit 21 via the three-dimensional graphic data generation unit 25 and the shadow generation processing unit. Output to 26.

The three-dimensional figure generation processing unit 25 generates figure data of a moving three-dimensional figure based on the three-dimensional figure data read from the three-dimensional figure data storage unit 21 and the received data indicating the movement amount of the designated figure element. Further, the shadow generation processing unit 26 generates graphic data relating to the shadow of the three-dimensional graphic from the data.

The display processing unit 27 converts a three-dimensional figure into (a) and (b) based on these figure data as shown in FIG.
(B), (c), and (d) are displayed in this order.

[0012]

However, this comparison method using a conventional graphic processing apparatus requires a long operation time, cannot be compared unless a three-dimensional figure is moved on a screen, and directly compares three-dimensional figures. There are some drawbacks, such as the inability to do so and the difficulty in understanding the distance between three-dimensional figures.

The present invention solves these problems in the prior art. In order to grasp the size and sense of distance of a three-dimensional figure, a comparative figure, a shadow, and auxiliary figures such as a box-like body can be easily obtained. It is another object of the present invention to provide a graphic processing apparatus which can display a three-dimensional graphic by simple operations and can move or deform the three-dimensional graphic itself by designating the position of a shadow.

[0014]

Therefore, according to the present invention, in a three-dimensional graphic processing apparatus for displaying a three-dimensional figure three-dimensionally on a screen, a three-dimensional figure surrounding the three-dimensional figure according to an operation of designating the three-dimensional figure is provided. a three-dimensional box generating means for displaying a three-dimensional box enclosing the manner, are provided with three-dimensional box shadow figure generating means for displaying a shadow of the three-dimensional shape to the three-dimensional box. In addition, three-dimensional figures
A three-dimensional area around the three-dimensional figure is taken according to the specified operation.
A three-dimensional box generation means for displaying a three-dimensional box to surround, and a three-dimensional box
A three-dimensional box shadow figure generating means for displaying the shadow of the three-dimensional figure;
When this designation operation is performed on two solid figures,
Display one solid figure at the position of the other solid figure
And a comparison solid figure generating means.

Further, there is provided a three-dimensional box display form setting means for displaying a three-dimensional box with a scale or texture.

Further, the three-dimensional box display mode setting means is configured to set the interval of the scale or the texture to a designated value.

Further, there is provided a three-dimensional figure editing means for changing the display state of the three-dimensional figure corresponding to the three-dimensional box shade figure in accordance with an operation of moving the designated position after designating the three-dimensional box shade figure.

In this operation, when the boundary of the three-dimensional box shading figure is designated, the three-dimensional figure editing means displays the deformed figure formed by moving the position of the ridge line of the three-dimensional figure corresponding to the boundary. Make up.

Further, in this operation, when the inside of the three-dimensional box shadow figure is designated, the three-dimensional figure editing means is configured to display the three-dimensional figure at the moved position.

[0020]

When the operator designates a three-dimensional figure on the screen with a mouse or the like, a rectangular parallelepiped (three-dimensional box) surrounding the three-dimensional figure and a shadow of the three-dimensional figure projected on the three-dimensional box are displayed. The user can grasp the depth and size of the three-dimensional figure from these three-dimensional boxes and shadows. When comparing the sizes of two solid figures, two solid figures are designated in order. By this operation, a comparison graphic when the other three-dimensional graphic is placed at the position of one of the three-dimensional graphics is displayed on the screen, and the operator can know the relationship between the two sizes using the comparison graphic. it can.

The three-dimensional box is provided with textures such as graduations, dots and vertical stripes at predetermined intervals, so that the depth and size can be accurately represented.

When a shadow projected on the three-dimensional box is designated with a mouse and a mouse operation for moving or deforming the shadow is performed, the three-dimensional figure moves and deforms in accordance with the movement of the shadow.

[0023]

【Example】

(First Embodiment) First, an operation procedure and an operation of the graphic processing apparatus when displaying an auxiliary graphic using the graphic processing apparatus according to the embodiment of the present invention will be described with reference to FIG.

A three-dimensional figure 31 and a three-dimensional figure 32 are displayed on the initial screen (a). The operator operates the mouse 34 to position the cursor 33 on one surface (graphic element) of the three-dimensional graphic 31 whose size is to be compared, and presses the mouse button.
Click 35. By this operation, the graphic element specified by the cursor 33 is highlighted (b).

Next, the cursor 33 is moved to the corresponding graphic element of the other three-dimensional graphic 32 whose size is to be compared,
Click mouse button 35. With this operation, the surface designated by the cursor 33 is highlighted (c), and
The first selected solid figure 31 is the second selected solid figure
The wire figure (the figure displayed by the ridge line) 36 at the time of moving to the position of 32 is displayed as a predictive line as an auxiliary figure (d), and further, the three-dimensional figure 31, the three-dimensional figure 32 and the wire figure 36
Is displayed as an auxiliary figure.
In FIG. 37, shadows 38 and 39 of the three-dimensional figures 31 and 32 are drawn as auxiliary figures (e).

Each of these wire figures (referred to as a comparative three-dimensional figure) 36, three-dimensional box 37, and three-dimensional box shading figures 38 and 39 is a function as an auxiliary figure that allows the operator to easily understand the size and sense of distance of the three-dimensional figure. Plays.

Further, in the graphic processing apparatus of the embodiment, as will be described later, by selecting the display mode menu 30 of the three-dimensional box displayed at the bottom of the screen with the cursor 33, the three-dimensional box 37 is selected.
Scales and various textures can be added to the.
Furthermore, after specifying the three-dimensional box shading figure 38 with the cursor 33,
By operating the cursor 33, the three-dimensional figure 31 can be moved or deformed (this is called editing of the three-dimensional figure).

As shown in FIG. 1, a graphic processing apparatus according to an embodiment for performing such operations includes a three-dimensional graphic data storage unit 1 for storing three-dimensional graphic data, and a mouse input information reading unit for reading information from a mouse. 2 and a designated graphic element determining unit 3 for searching for a specified graphic element based on the information
And a three-dimensional box attribute reading unit 4 for reading a specification relating to the display mode of the three-dimensional box selected by the operator (referred to as the attribute of the three-dimensional box). A graphic element comparing section 5 for creating designated graphic element information based on the information of the section 3; a comparative solid graphic data generating section 6 for calculating graphic data relating to a comparative solid figure, a solid box and a solid box shadow figure; A three-dimensional box data storage unit 7 for storing data relating to a three-dimensional box shadow graphic, a comparative three-dimensional graphic, and a three-dimensional box attribute, and a three-dimensional box generation unit 8 for preparing graphic data of the three-dimensional box graphic to be displayed.

The graphic processing apparatus further includes a three-dimensional figure editing unit which creates, as blocks involved in the editing of the three-dimensional figure, three-dimensional figures and figure data for moving and deforming the three-dimensional figures according to the movement of the cursor after the designation of the three-dimensional figure. 9, a three-dimensional figure editing data storage unit 10 for storing data created by the three-dimensional figure editing unit 9, and a three-dimensional figure generation unit 11 for preparing figure data of a three-dimensional figure to be displayed.
There is provided a display processing unit 12 for displaying a three-dimensional figure and various auxiliary figures on a screen based on various graphic data input through the three-dimensional box generation unit 8 and the three-dimensional box generation unit 8.

In this graphic processing apparatus, the entire operation is performed in the order shown in FIG. FIG. 2 shows the contents of the operation and the names of the blocks performing the operation.

Step 1: The three-dimensional figure generating unit 11 reads out the three-dimensional figure data stored in the three-dimensional figure data storage unit 1, outputs this to the display processing unit 12, and displays the three-dimensional figure on the screen. (Initial screen display). As shown in FIG. 11, the figure data stored in the three-dimensional figure data storage unit 1
The number assigned to the graphic element and the coordinates indicating the position of the graphic element (or the graphic element numbers such as vertices and ridge lines constituting the graphic element) are defined. The surface of the circle is
The data is approximated by polygons.

Step 2: When the operator operates the mouse, the mouse input information reading section 2 reads the information input by the mouse and transmits it to the designated graphic element determination section 3.

Step 3: Upon receiving the mouse input information, the designated graphic element determining unit 3 determines the data output destination by the graphic element comparing unit 5 or the three-dimensional graphic editing unit 9 by the procedure from step 30 to step 36 in FIG. Decide on one.

Step 30: The three-dimensional figure data is read from the three-dimensional figure data storage unit 1. Step 31: It is searched whether or not the coordinates designated by the mouse exist as the coordinates of the vertices, ridges or faces of the three-dimensional figure data. If it exists, the figure number of the three-dimensional figure whose vertex, ridge line or face is the figure element is obtained; Step 33: The data of the graphic element constituting the three-dimensional figure of the corresponding figure number, and the coordinates designated by the mouse Is output to the graphic element comparison unit 5.

Step 34: If the coordinates designated by the mouse do not exist in the three-dimensional figure data in step 31, the three-dimensional box shading figure information is read from the three-dimensional box data storage unit 7, and step 35: the coordinates designated by the mouse Step 36: If there is a corresponding shaded figure, the shaded figure data, mouse coordinates, and mouse state information indicating whether the mouse is on or off are edited in a three-dimensional figure. Output to the unit 9.

At this time, the data output from the designated graphic element determining section 3 to the graphic element comparing section 5 is shown in FIG. 13A, and the data output to the three-dimensional graphic editing section 9 is shown in FIG.
Is shown in

As described above, the designated graphic element determining unit 3 outputs the three-dimensional graphic data to the graphic element comparing unit 5 and the three-dimensional box shading graphic data to the three-dimensional graphic editing unit 9. In the former series in which the three-dimensional figure data is received, various auxiliary figures are formed, and in the second series in which the three-dimensional box shade figure data is received, the three-dimensional figures and the shade figures that move and deform according to the movement of the cursor are edited. .

Step 4: The graphic element comparing section 5 reads the specified graphic element information (see FIG. 12) from the three-dimensional box data storage section 7, and updates the record by the procedure shown in steps 40 to 46 of FIG.

Step 40: Receiving the three-dimensional graphic data from the specified graphic element determining section 3; Step 41: Reading the specified graphic element information from the three-dimensional box data storage section 7; Step 42; 43; If 0, the graphic element number and the solid figure number of the received solid graphic data are stored as the first designated graphic element information. Step 44; If the number of data is 1, the second designated graphic element information. As the element information, the figure element number and the three-dimensional figure number of the received three-dimensional figure data are stored. Step 45: When the number of data is two, the designated figure element information is emptied, and then the figure of the three-dimensional figure data received. The element number and the three-dimensional figure number are stored as the first record, and step 46; a designation diagram in which the two types of data created in step 44 are stored. It sends the element information to compare the three-dimensional graphic data generating unit 6.

As described above, in the graphic element comparing section 5, after the designated graphic element determining section 3 transmits the three-dimensional graphic data twice in response to the two mouse input operations, the updated designated graphic element information is compared with the three-dimensional graphic data. Output to the graphic data generation unit 6.

Step 5: The comparative three-dimensional graphic data generating unit 6 which has received the three-dimensional graphic data from the three-dimensional graphic data storage unit 1 reads the three-dimensional graphic data from the three-dimensional graphic data storage unit 1 according to the procedure from step 50 to step 57 in FIG. Data, three-dimensional box figure data, and three-dimensional box shade figure data are created. FIG. 14 shows a data generation flow at this time.

Step 50: When two types of records are contained in the designated graphic element information received from the graphic element comparing unit 5, Step 51: Corresponding to the graphic element numbers recorded in the first and second records Step 52: Obtain the difference between the centers of gravity, and Step 53: Add the difference between the centers of gravity to the coordinates of the surface of the graphic element number recorded in the first record. The coordinates of the surface thus calculated are compared with the position information (the center of gravity of the surface corresponding to the second graphic element number), the three-dimensional graphic number, and the graphic element number, together with the comparative three-dimensional graphic data information list ( 12).

Step 54: Next, three types of three-dimensional figures, that is, three-dimensional figures recorded in the first and second records of the designated graphic element information and comparative three-dimensional figures recorded in the comparative three-dimensional graphic data information list are included. In order to form a rectangular parallelepiped (solid box), the coordinates indicating the maximum value and the coordinates indicating the minimum value in each of the x, y, and z directions are obtained from the coordinates of the vertices of the three types of three-dimensional figures. The width, height and depth of the three-dimensional box are calculated from the difference between the maximum value and the minimum value, and the calculated values are stored in the three-dimensional box attribute data information list (FIG. 12) of the three-dimensional box data storage unit 7. Step 56: The center of gravity of the rectangular parallelepiped is calculated from the average of the maximum value and the minimum value, and stored as the center coordinate of the rectangular parallelepiped in the three-dimensional box attribute data information list.

Step 57: Further, a shadow figure formed when the three-dimensional figure is projected onto the three-dimensional box is calculated, information representing the position, the number of the original three-dimensional figure, and the figure element number assigned to the shadow figure The coordinate data of the shadow figure and the three-dimensional box shadow figure information list of the three-dimensional box data storage unit 7 (FIG. 1)
2).

Step 6: When the operator changes the display mode (addition of various textures and scales) of the three-dimensional box by operating the cursor, the three-dimensional box attribute reading unit 4 reads the information, and reads the information. "Texture type name" in the three-dimensional box attribute data information list (FIG. 12)
Step 7: The three-dimensional box generating unit 8 calculates the texture or coordinate position of the scale based on these data, and updates the texture of the three-dimensional box attribute data information list. Store in coordinate list or scale coordinate list.

Step 12: The display processing unit 12 displays a comparison three-dimensional figure, a three-dimensional box and a three-dimensional box shadow figure on the screen based on the figure data sent through the three-dimensional box generation unit 8, and also displays a three-dimensional figure. Displays the texture and scale to be added to the box.

The selection of the three-dimensional box attribute is described in the second section below.
The operation of the three-dimensional figure editing unit 9 and the three-dimensional figure generation unit 11 in steps 8 and 9 will be described in detail in the third embodiment.

As described above, in this graphic processing apparatus, the first
By sequentially designating the three-dimensional figure and the second three-dimensional figure with a cursor, a comparative three-dimensional figure, a three-dimensional box, and a three-dimensional box shading figure can appear on the screen, and the operator can determine the size and distance of the three-dimensional figure. Can be correctly grasped.

In FIG. 20, when the designation order of the cursor is changed and the first three-dimensional figure 32 is specified and the second three-dimensional figure 31 is specified, the comparison three-dimensional figure 31 is designated as the second three-dimensional figure 31 Is displayed at the position of.

The width, height and depth of the three-dimensional box are
The calculated value may be set to a value obtained by multiplying the calculated value by a certain factor so that the three-dimensional figure and the comparative three-dimensional figure can be accommodated in the three-dimensional box with a margin.

Even when only one three-dimensional figure is drawn on the screen, the cursor is moved to the graphic element of the three-dimensional figure and the mouse button is clicked twice successively, so that the three-dimensional figure is drawn. A three-dimensional box surrounding the figure and a three-dimensional box shading figure can be displayed. However, in this case, the comparative three-dimensional figure is not displayed.

(Second Embodiment) In a second embodiment, an operation for selecting an attribute of a three-dimensional box will be described. At the lower part of the display screen, as shown in FIG. 21A, an area for selecting the display mode of the three-dimensional box is displayed (note that only the three-dimensional box is shown in FIG. 21 and the description of the three-dimensional figure is omitted. ing). When selecting the texture display, the operator positions the cursor on the “type” field of the texture and clicks the mouse button.

With this operation, a list of texture type menus is displayed on the screen, and the operator selects a desired type from the menu with the cursor. Next, move the cursor to the "width" field and enter the texture interval using the keyboard.

FIG. 21 (b) shows the attributes of a three-dimensional box when "vertical" is selected as the texture type and the texture interval is set to 20, and (c) similarly shows the texture type "horizontal". ", For a texture spacing of 25,
(D) illustrates the case of texture type “dot” and texture interval 15.

To attach a scale to the three-dimensional box, place the cursor on the "Type" column of the measurement and click the mouse button to select either "Equal interval" or "Non-equal interval". Enter the number on the keyboard. FIG. 21 (e) is an example of equally-spaced scales, and scales are equally set in the x, y, and z directions at set intervals of ten. (F) is an example of “unequal intervals” in which the scale intervals are different between the x direction and the z direction, and the scales are provided at intervals of 20 in the x direction and at intervals of 30 in the z direction.

It is also possible to attach the texture and the scale together.

When the operator performs an operation of changing the three-dimensional box attribute, the three-dimensional box attribute reading unit 4 reads the attribute according to the procedure from step 60 to step 64 in FIG.

Step 60: Read the texture type, Step 61: Read the texture interval, Step 62: Read the scale type, Step 63: Read the scale interval, Step 64; Store the read information in the three-dimensional box data storage unit 7.
In the three-dimensional box attribute data information list.

The three-dimensional box generator 8 performs steps 70 to 79 in FIG. 7 based on the three-dimensional box attribute data information.
A coordinate list for textures and scales is created by the procedure described in (1).

Step 70: The three-dimensional box attribute data information in the three-dimensional box data storage unit 7 is read. Step 71: According to the selected texture type, Step 72: When "dot" is selected, the three-dimensional Step 73: If "horizontal" is selected, calculate the position of the end point of the horizontal line at each texture interval on the surface of the three-dimensional box; Step 74; Is selected, the end point position of the vertical line at each texture interval on the surface of the three-dimensional box is calculated. Step 75: The calculation result is stored in the texture coordinate list of the three-dimensional box attribute data information list.

Step 76: If the scale type is selected, according to the type, Step 77; if "Equally spaced", the positions of the scales are equally spaced along the edges forming the three-dimensional box. Step 78: If "non-equidistant", calculate the positions of the graduations at the designated graduation intervals in the vertical and horizontal directions along the ridges constituting the three-dimensional box. The scale position thus set is stored in the scale coordinate list of the three-dimensional box attribute data information list.

FIG. 15 shows three-dimensional box attribute data information in which data from the three-dimensional box attribute reading unit 4 and the three-dimensional box generating unit 8 are stored.

The display processing unit 12 performs steps 110 to 114 of FIG. 8 based on the three-dimensional box attribute data information.
The attributes of the three-dimensional box are displayed on the screen according to the procedure of

Step 110: When the texture information is stored in the three-dimensional box attribute data information, processing corresponding to the type is performed. Step 111: When the texture type is "dot", the three-dimensional box attribute data The dots are displayed at the corresponding positions in the order defined by the texture coordinate list of the information. Step 112: If the texture type is “horizontal” or “vertical”, the dots are displayed in the texture coordinate list shown in FIG. The coordinate points are read two by two, and a straight line having the coordinate points as end points is displayed on the screen.

Step 113: When the scale information is stored in the three-dimensional box attribute data information, step 11
4: Scales are displayed at corresponding positions in the order defined by the scale coordinate list.

As described above, the display processing unit 12 displays the three-dimensional box on the screen in various modes exemplified in FIGS. 21B to 21F according to the selection of the operator.

In addition, as the type of the texture, various forms such as a broken line, a chain line, and a + pattern can be used.

(Third Embodiment) In a third embodiment, an editing operation for moving or deforming a three-dimensional figure itself by selecting and operating a three-dimensional box shade figure with a cursor will be described.

FIG. 22 shows a procedure for deforming a three-dimensional figure by this editing operation. On the initial screen, a three-dimensional figure 31, a three-dimensional box 37 surrounding it, and a shaded figure 38 of the three-dimensional figure projected on the three-dimensional box are displayed (a). The operator moves the mouse 34 to move the cursor 33 to the edge of one solid box shading figure 38,
Press button 35 down. With this operation, the shaded figure 38 specified by the cursor 33 is highlighted (b).

Next, the movement of the mouse 34 is started while the mouse button 35 is kept depressed. With this operation, the ridgeline of the shaded figure selected by the cursor moves with the cursor, and the three-dimensional box shaded figure is deformed into a stretched shape with the ridgeline pinched. At the same time, the three-dimensional figure 31 is
The shape is changed according to the deformation of the three-dimensional box shading figure 38, and the deformed shape is displayed by a prediction line 50 (c). Mouse button 35
Is stopped, the shaded figure and the three-dimensional figure are determined as they are at the time of the deformation, and the predicted line changes to a solid line (d).

FIG. 23 shows a procedure for moving a three-dimensional figure by an editing operation. In this case, the cursor 33
Is set inside the three-dimensional box shading figure 38 (a), and the mouse button 35 is depressed. With this operation, the shaded figure 38 specified by the cursor 33 is highlighted (b).

Next, the movement of the mouse 34 is started while the mouse button 35 is kept depressed. With this operation, the designated shadow graphic 38 moves together with the cursor 33, and at the same time, the three-dimensional graphic represented by the prediction line 51 moves in accordance with the movement of the shadow graphic 38 (c). When the depression of the mouse button 35 is stopped, the positions of the shaded figure 38 and the three-dimensional figure 31 are fixed to the movement positions at that time, and the predicted line changes to a solid line (d).

In the three-dimensional figure editing section 9, step 8 in FIG.
This editing operation is executed according to the procedure from 0 to step 102.

Step 80: Information indicating the mouse coordinates, the mouse state, and the three-dimensional box shading graphic information are sent from the designated graphic element determining part 3 to the three-dimensional graphic editing part 9 (FIG. 1).
3 (b)). If the information indicating the mouse state is on, step 81; the three-dimensional figure edit data stored in the three-dimensional figure edit data storage unit 10 is read. As shown in FIG. 16, the three-dimensional figure edit data includes a mouse input information list for storing data represented by a mouse, an edit information list for storing an edit mode (change or move), and a figure of a figure to be displayed by a prediction line. It is composed of a three-dimensional figure predicted line data list for storing numbers and figure data.

Step 82: When the display of the mouse state stored in the three-dimensional figure editing data is off (that is, in the initial state), Step 83; three-dimensional box shadow figure received from the designated figure The information is read, and step 84; it is determined whether the mouse coordinates specify the boundary or the inside of the shaded box of the three-dimensional box. Step 85; if the boundary is specified, the edit mode of the edit information list is changed Step 86; collate with the three-dimensional figure data in the three-dimensional figure data storage unit 1 to search for the ridge line of the three-dimensional figure corresponding to the boundary of the shaded figure; Add to list.

Step 87: If the mouse coordinates specify the inside of the three-dimensional box shading figure in step 84, the editing mode of the editing information list is set to "move", and step 88; the three-dimensional figure data storage unit 1 Step 89: adding the figure data of the three-dimensional figure to the three-dimensional figure prediction line data list, and searching for the three-dimensional figure corresponding to the designated shaded figure; Vary on display.

Step 90: When the display of the mouse state of the three-dimensional figure editing data is turned on, the movement amount of the mouse is calculated based on the received mouse coordinates. Step 91: When the editing mode is Step 92; Adds a movement amount to the coordinates that change with the transformation among the shadow figure coordinates in the three-dimensional box shadow figure information. Step 93: Movement corresponding to the coordinates of the transformation target in the three-dimensional figure prediction line data Add quantity.

Step 94: When the edit mode is "move", a movement amount is added to all the shadow figure coordinates of the three-dimensional box shadow figure information. Step 95: All the coordinates of the three-dimensional figure prediction line data are added. Step 96: The three-dimensional box shadow graphic information which has been subjected to these processes is transferred to the three-dimensional box data storage unit via the three-dimensional graphic data storage unit 1 and the comparative three-dimensional graphic data generation unit 6. Step 97: The three-dimensional figure predicted line data is stored in the three-dimensional figure edit data storage unit 10 and sent to the three-dimensional figure generation unit 11.

Step 98: When a signal indicating the mouse-off state is received from the designated graphic element determining section 3, the three-dimensional graphic editing data is read from the three-dimensional graphic editing data storage section 10, and Step 99; "Move"
When the edit mode is entered, step 100; the predicted three-dimensional figure line data is written to the three-dimensional figure data in the three-dimensional figure data storage unit 1; step 101; the three-dimensional figure predicted line data is emptied; Empty.

FIG. 19 shows a data flow when the “deform” mode is selected in the three-dimensional figure editing process.
FIG. 18 shows a data flow when the “move” mode is selected in the three-dimensional figure editing process. Also,
FIG. 17 shows a data flow in the “move” mode, from the start of movement (a) to the end of movement (c) through the movement (b).

The three-dimensional figure generation unit 11 outputs to the display processing unit 12 the three-dimensional figure data read from the three-dimensional figure data storage unit 1 and the three-dimensional figure prediction line data received from the three-dimensional figure editing unit 9.

The display processing section 12 executes step 115 in FIG.
From step to step 120, the display method is changed according to the type of data to be received. Step 116: When the three-dimensional graphic data stored in the three-dimensional graphic data storage unit 1 is received, Displaying the three-dimensional figure, step 117; receiving the three-dimensional box shade figure data stored in the three-dimensional box data storage unit 7, displaying the shaded figure as a solid face; step 118; receiving the comparison three-dimensional figure data, Step 119: When receiving the three-dimensional box attribute data, the three-dimensional box and the texture or the scale are displayed according to the three-dimensional box algorithm (FIG. 8). When receiving the predicted 3D figure line data stored in the View by.

As described above, in the graphic processing apparatus of the embodiment,
Auxiliary figures such as comparative three-dimensional figures, three-dimensional boxes, and three-dimensional box shade figures that are effective for grasping the size and sense of distance of three-dimensional figures can be displayed on the screen with a simple mouse operation.
In addition, editing such as deformation and movement of a three-dimensional figure can be performed by an operation of moving the shaded figure.

[0084]

[0085]

As is apparent from the above description of the embodiment, the graphic processing apparatus of the present invention can accurately compare the sizes of a plurality of three-dimensional figures which are far away from each other with a simple operation.
An auxiliary figure for correctly recognizing the volume and sense of distance of a three-dimensional figure can be displayed. Moreover, this operation can be performed in a short time.

Further, the three-dimensional figure can be moved or deformed by the editing operation while confirming the distance interval.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration in an embodiment of a graphic processing apparatus according to the present invention;

FIG. 2 is a flowchart showing an overall operation in the graphic processing apparatus of the embodiment;

FIG. 3 is a flowchart showing an operation of a designated graphic element determination unit of the apparatus according to the embodiment;

FIG. 4 is a flowchart showing an operation in a graphic element comparison unit of the apparatus according to the embodiment;

FIG. 5 is a flowchart showing an operation in a comparative three-dimensional graphic data generation unit of the apparatus according to the embodiment;

FIG. 6 is a flowchart showing an operation in a three-dimensional box attribute reading unit of the apparatus according to the embodiment;

FIG. 7 is a flowchart showing the operation of the three-dimensional box generation unit of the apparatus according to the embodiment;

FIG. 8 is a flowchart showing a display operation of a three-dimensional box attribute in the display processing unit of the apparatus according to the embodiment;

FIG. 9 is a flowchart showing the operation of the three-dimensional figure editing unit of the apparatus according to the embodiment;

FIG. 10 is a flowchart showing an overall display operation in the display processing unit of the apparatus according to the embodiment;

FIG. 11 is a configuration diagram of three-dimensional graphic data stored in a three-dimensional graphic data storage unit of the apparatus according to the embodiment;

FIG. 12 is a configuration diagram of three-dimensional box data stored in a three-dimensional box data storage unit of the apparatus according to the embodiment;

FIG. 13 is a data flow diagram in a designated graphic element determination unit of the apparatus according to the embodiment;

FIG. 14 is a data flow diagram of a comparative three-dimensional graphic data generation unit of the apparatus according to the embodiment;

FIG. 15 is an explanatory diagram of three-dimensional box attribute data stored in a three-dimensional box data storage unit of the apparatus according to the embodiment;

FIG. 16 is a configuration diagram of data stored in a three-dimensional figure editing data storage unit of the apparatus according to the embodiment;

FIG. 17 is a data flow diagram in a three-dimensional figure editing unit of the apparatus according to the embodiment;

FIG. 18 is a view for explaining a data flow in “move” editing;

FIG. 19 is a view for explaining a data flow in “deformation” editing;

FIG. 20 is a diagram showing a graphic display state in the apparatus according to the embodiment;

FIG. 21 is a diagram showing attributes of a three-dimensional box displayed in the apparatus according to the embodiment;

FIG. 22 is a diagram showing a screen when “deformation” is edited in the apparatus of the embodiment.

FIG. 23 is a diagram showing a screen when “move” is edited in the apparatus according to the embodiment;

FIG. 24 is a block diagram showing a configuration of a conventional graphic processing apparatus.

FIG. 25 is a diagram showing a display screen in a conventional graphic processing device.

[Explanation of symbols]

 1, 21 three-dimensional graphic data storage part 2, 22 mouse input information reading part 3, 23 designated graphic element determining part 4 three-dimensional box attribute reading part 5 graphic element comparing part 6 comparative three-dimensional graphic data generating part 7 three-dimensional box data storing part 8 three-dimensional Box generation unit 9, 24 3D figure editing unit 10 3D figure editing data storage unit 11 3D figure generation unit 12, 27 Display processing unit 25 3D figure generation processing unit 26 Shadow generation processing unit 30 3D box attribute menu 31, 32, 41, 42 3D figure 33 Cursor 34, 45 Mouse 35, 46 Mouse button 36 Comparative 3D figure 37 3D box 38, 39 3D box shaded figure 47 Shadow 50 "Transformation" prediction diagram 51 "Move" prediction diagram

Claims (7)

(57) [Claims] 1. A three-dimensional graphic processing apparatus for displaying a three-dimensional figure three-dimensionally on a screen, wherein a three-dimensional box that three-dimensionally surrounds the three-dimensional figure according to an operation of designating the three-dimensional figure is displayed. a box generating unit, the three-dimensional graphic processing apparatus is characterized by providing a three-dimensional box shadow figure generating means for displaying a shadow of the solid figure to the three-dimensional box. 2. A three-dimensional figure is displayed three-dimensionally on a screen.
Operation for specifying a three-dimensional figure in a three-dimensional figure processing device
Three-dimensionally surrounding the three-dimensional figure according to
Three-dimensional box generating means for displaying a box;
A three-dimensional box shadow figure generating means for displaying the shadow of the figure;
When the designation operation is performed on two solid figures,
Comparison of displaying one solid figure at the position of the other solid figure
Three-dimensional figure characterized by having a three-dimensional figure generating means
Shape processing equipment. 3. A scale or texture is provided on the three-dimensional box.
That the three-dimensional box display form setting means for attaching and displaying
3. The three-dimensional graphic processing apparatus according to claim 1, wherein
Place. 4. The three-dimensional box display mode setting means comprises:
Set prime or texture spacing to specified value
4. The three-dimensional graphic processing apparatus according to claim 3, wherein:
Place. 5. After specifying the three-dimensional box shade figure, specify
Corresponding to the three-dimensional box shading figure according to the operation to move the position
Figure editing means for changing the display state of a three-dimensional figure
The three-dimensional structure according to any one of claims 1 to 4, wherein
Graphic processing unit. 6. The three-dimensional box shade figure in the operation.
When the boundary of the three-dimensional figure is designated,
Deformation formed by moving the ridge line of a solid figure corresponding to the world
6. The tertiary image according to claim 5, wherein a graphic is displayed.
Original graphic processing unit. 7. The three-dimensional box shade figure in the operation.
When the inside of is specified, the three-dimensional figure editing means
Displaying the three-dimensional figure at a set position.
The three-dimensional graphic processing device according to claim 5.