JP2914567B1 - IMAGE CREATION DEVICE, IMAGE CREATION METHOD, AND READABLE RECORDING MEDIUM CONTAINING IMAGE CREATION PROGRAM - Google Patents

Abstract

An object of the present invention is to smoothly express enlargement or reduction of a character without creating and storing polygons and textures of various sizes in advance. A plane polygon forming a squib is reduced by a signal processing unit based on movement data of a plane polygon forming a spark. Also, the signal processing unit 25
According to 2, the pasting range of the texture which has the symbol representing the squib and is pasted on the plane polygon is reduced corresponding to the reduction. Thus, the shortening of the squib due to combustion is smoothly displayed on the monitor 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image creating apparatus for creating an image of a character and displaying it on a display, an image creating method, and a readable recording medium on which an image creating program is recorded.

[0002]

2. Description of the Related Art Conventionally, many game systems have been proposed. Examples of the system include a home dedicated machine and a television monitor, a professional dedicated machine, and a system including a personal computer or a workstation, a display, and an audio output machine.

Each of these systems includes a controller for a player to operate, a recording medium on which a game program is recorded, a CPU for controlling sound and image generation based on the game program, and The processor includes a processor for generating an image, a processor for generating audio, a monitor for displaying an image, and a speaker for outputting audio. As the recording medium, a CD-ROM, a semiconductor memory, a cassette containing a semiconductor memory, and the like are often used.

In such a game system, it is conceivable to display on a monitor a long object that expands or contracts over time, for example, a character representing a fuse that shortens from one end by burning.

[0005] In this case, conventionally, polygons constituting a plurality of dimensions of the squib and a texture having a pattern representing a squib corresponding to the polygon of each dimension are created and stored in advance and displayed on a monitor. By sequentially switching the polygons, the squib that gradually shortens was displayed.

[0006]

In order to display the smooth shortening of the squib, it is necessary to sequentially display the squib whose dimensions are gradually reduced. For this purpose, a large number of squibs corresponding to the squib of each size are required. Polygons and textures must be created and stored in advance, and the memory capacity for storing them increases.

However, since the memory capacity that can be mounted on the game system is limited, the number of polygons and textures that can be stored is limited, and it is difficult to express smooth shortening of the fuse. Was.

[0008] The present invention has been made in view of the above,
An image creating apparatus, an image creating method, and a readable recording in which an image creating program is capable of smoothly expressing enlargement or reduction of a character without creating and storing polygons and textures of various sizes in advance. The purpose is to provide a medium.

[0009]

According to the present invention, there is provided an image creating apparatus for creating an image of a character and displaying the image on a display means, comprising: polygon data storage means for storing vertex coordinates of polygons constituting the character; Texture data storage means for storing the vertex coordinates of the texture representing the texture, polygon vertex coordinate changing means for changing the vertex coordinates of the polygon with the passage of time, and a pasting range to be pasted on the polygon in the texture. Texture pasting range changing means for changing corresponding to the change of the vertex coordinates, and drawing processing means for pasting the pasting range changed by the texture pasting range changing means to the polygon changed by the polygon vertex coordinate changing means. It is provided.

According to this structure, at least one of the enlargement and the reduction of the polygon is performed by changing the polygon constituting the character with the passage of time, and the pasting of the texture representing the character to the polygon is performed. When the range changes in response to the change in the vertex coordinates of the polygon, at least one of enlargement and reduction of the pasting range is performed.

[0011] Then, the changed pasting range is pasted on the changed polygon, so that an image of a character that undergoes at least one of enlargement and contraction change over time is created and displayed on the display means. That is, enlargement or reduction of the character is smoothly expressed without storing polygons and textures of various sizes in advance.

[0012]

FIG. 9 is a perspective view showing the appearance of an embodiment of a video game apparatus to which an image creating apparatus according to the present invention is applied. This video game apparatus is composed of a driver's seat 1 and a monitor 2, and this driver's seat 1 has a chair 3, a steering wheel 4, an accelerator pedal 5, a brake pedal 6, and a side brake 7, similarly to the driver's seat of an automobile. It is arranged. In the driver's seat 1, a coin insertion slot 8 for inserting coins is arranged on the front left of the chair 3, and a start switch 9 for instructing the start of the game is arranged on the right side of the steering wheel 4. I have. The monitor 2 is disposed at a position where the player sitting on the chair 3 in front of the driver's seat 1 can easily see the signal.
It is composed of an RT, LCD, projector, or the like, and displays an image.

In this embodiment, two video game devices are connected to each other by a communication cable (not shown).
Each player competes with each other on a car displayed on the monitor and operated by the player himself (hereinafter referred to as “own vehicle”) and a car operated by the opponent player (hereinafter referred to as “enemy car”). Has become.

Next, an outline of a game played on the video game device will be described with reference to FIG. FIG. 10 is a view showing one screen of the game displayed on the monitor and a coordinate system set in the game. In this video game, an urban road and the like are set in a field representing the entire space represented in the image of the computer graphics, and a model including a warehouse and a building around the urban road and the like, that is, a computer, Individual objects displayed on the graphics screen are set, and a car as a character runs in the objects according to the operation of the player.

In this video game, a "game" is played in which a vehicle corresponding to the "oni" exists and the "oni" is replaced by the contact between the own vehicle and the enemy vehicle. This "oni"
A time bomb B as a character is displayed above the vehicle corresponding to.

The time bomb B has a spherical bomb section 10 and
A projecting wire is provided on the bomb section 10 and a squib (a linear body, a burning body)
It comprises a mounting part 12 for mounting the heating element 11 and a spark 13 indicating the combustion state of the squib 11. The squib 11 is displayed on the monitor 2 so that one end of the squib 11 is attached to the attachment portion 12, and a spark 13 is displayed near the other end.

[0017] Then, by contact between the own vehicle and the enemy vehicle, the "oni"
Is replaced, the display position of the time bomb B is moved to the car that will be the new "oni" as shown by the two-dot chain line in FIG.

A three-dimensional world coordinate system (X, Y, Z) shown in FIG. 10 is a coordinate system set in the above-mentioned fields, and an urban road or the like is a world coordinate system (X, Y, Z).
It is described using. The three-dimensional local coordinate system (x, y, z) is a coordinate system set in a subspace in the field, and information such as the shape and position of a model of a building or the like installed in the field is Each of them is described using a unique local coordinate system (x, y, z).

FIG. 1 is a block diagram showing an electric configuration of the video game apparatus and functional blocks of a control unit. As shown in FIG. 1, the video game device includes the monitor 2,
The control unit 25 includes a start switch 9, a coin detection unit 21, a driving operation unit 22, a ROM 23, a RAM 24, and a control unit 25. The control unit 25 includes, as functional blocks, a game control unit 251, a signal processing unit 252, and a drawing processing unit. 25
3 and a communication control unit 254.

The start switch 9 is operated by a player. When the start switch 9 is pressed by the player, a switch signal to that effect is sent to the controller 25. The coin detection unit 21 detects a coin inserted into the coin insertion slot 8 (FIG. 9), and a detection signal is sent to the control unit 25.

The driving operation unit 22 includes the steering wheel 4, the accelerator pedal 5, the brake pedal 6, and the side brake 7
Each operation data relating to the operation amount of each of the parts 4 to 7, that is, the rotation angle of the steering wheel 4, the degree of depression of the accelerator pedal 5 and the brake pedal 6, and the operation amount of the side brake 7, is converted into a voltage of a corresponding level. The data is converted and sent to the control unit 25.

The ROM 23 stores a program of the video game, coordinate data of a field in the world coordinate system, coordinate data of each model in the local coordinate system, a program relating to the behavior of a vehicle based on automotive engineering, and a world coordinate system. It stores correspondence data between the system and each of the local coordinate systems.

The ROM 23 stores polygon data and texture data described later (polygon data storage means, texture data storage means, spark polygon data storage means, spark texture data storage means). The RAM 24 temporarily stores data, into which image data to be drawn on the monitor 2 and the like are written.

The control unit 25 is composed of one or a plurality of CPUs, electronic circuits, and the like, performs various calculations at predetermined sampling intervals, and displays an image on the monitor 2 using the calculation results. .

The game control unit 251 of the control unit 25 is based on a game program stored in the ROM 23, a vehicle behavior program based on vehicle engineering, and operation data of each unit transmitted from the driving operation unit 22. A command as a task for drawing or the like is generated to advance the game.

For example, the game control section 251 determines whether or not a coin has been inserted into the coin insertion slot 8 (FIG. 9) based on the presence / absence of a detection signal sent from the coin detection section 21, It is determined whether or not the player has pressed the start switch 9 based on the presence or absence of the signal.

The signal processing unit 252 includes a game control unit 251
Based on the command from, the calculation of the position of the character on the two-dimensional map and the three-dimensional space, etc., the calculation for the perspective projection conversion from the position on the three-dimensional space to the monitor plane, the calculation of the light source, etc. Is what you do.

The signal processing unit 252 includes, as functional blocks, a polygon vertex coordinate changing unit 26 as described later.
1, a texture pasting range changing unit 262, and a spark polygon vertex coordinate processing unit 263.

The drawing processing unit 253 writes the image data to be drawn into the RAM 24 based on the calculation result in the signal processing unit 252 and the coordinate data of the enemy vehicle from the communication control unit 254, for example, is designated by a polygon. R
It performs writing processing of texture data to the area of AM24, and has a function as a drawing processing unit and a second drawing processing unit.

The communication control section 254 transmits coordinate data relating to the position of the own vehicle determined by the signal processing section 252 to the other video game apparatus, and controls the own vehicle controlled by the other video game apparatus, that is, the present video game. The coordinate data relating to the position of the enemy vehicle of the apparatus is received and transmitted to the drawing processing unit 253.

Here, the drawing function of the game control unit 251, the signal processing unit 252, and the drawing processing unit 253 will be described. The RAM 24 stores model data, texture data, and the like that define polygons.

A polygon is an object set in the game space, that is, a polygon 2 constituting a model or a character.
This is a three-dimensional virtual figure, and in this embodiment, a triangle or a quadrangle is used. The texture data is two-dimensional image data (pattern) for forming an image by pasting it on a polygon.

Commands for drawing generated by the game control unit 251 include a command for drawing a three-dimensional image using polygons and a command for drawing a normal two-dimensional image.

Commands for rendering a three-dimensional image using polygons include polygon vertex address data on the display area of the RAM 24, texture address data indicating the storage position of the texture data to be attached to the polygons on the RAM 24, and shading processing. And the like for brightness data.

Of these data, the polygon vertex address data on the display area is converted by the signal processing unit 252 into
By performing coordinate conversion of the polygon vertex coordinate data in the three-dimensional space from the game control unit 251 based on the movement amount data and rotation amount data of the screen itself (viewpoint),
This is replaced with polygon vertex coordinate data in two dimensions.

The polygon vertex address data is stored in RAM
24 indicates an address on the display area, and the drawing processing unit 25
3 writes the texture data indicated by the texture address data allocated in advance in the range of the display area of the RAM 24 indicated by the three or four polygon vertex address data.

Thus, on the display surface of the monitor 2,
Characters and models with textures pasted on many polygons are displayed.

A command for drawing a normal two-dimensional image includes vertex address data, texture address data, luminance data for shading processing, and the like. Among these data, the vertex address data is obtained by the signal processing unit 252 converting the vertex coordinate data from the game control unit 251 to a two-dimensional plane based on the movement amount data and the rotation amount data from the game control unit 251. Is the coordinate data obtained by

Then, the drawing processing unit 253 writes the texture data indicated by the previously assigned texture address data in the range of the RAM 24 indicated by the vertex address data.

Next, the time bomb B will be described with reference to FIGS.
The polygons constituting FIG. 4 (FIG. 4) and the textures pasted on the polygons will be described. FIG. 2 is a wire frame diagram showing the polygon, FIG. 3 is a diagram showing a texture attached to each part of the time bomb B, (a) is the texture of the bomb portion 10, (b) is the texture of the squib wire 11, (c) ) Shows the texture of the spark 13. FIG.
FIG. 3 is a diagram showing a time bomb B in which a texture is pasted on a polygon.

As shown in FIG. 2, the bomb 10 (FIG. 4)
Is constituted by a rectangular planar polygon 31, and the squib 11 (FIG. 4) is constituted by two rectangular planar polygons 32 and 33 each having vertices P1 to P4 and Q1 to Q4, and the mounting portion 12 (FIG. 4). Is composed of a polygon model 34 consisting of 17 polygons other than the bottom surface, with the corners of the top surface of the octagonal prism being chamfered. The spark 13 (FIG. 4)
It is composed of two rectangular planar polygons 35 and 36 consisting of 1 to R8 and S1 to S4.

In FIG. 2, the plane polygon 32 and the plane polygon 33 are displayed slightly apart for easy understanding, but they are actually set at the same position in a front-to-back relationship. The same applies to the plane polygon 35 and the plane polygon 36.

The plane polygon 31 is used by the signal processing unit 2
52, it is arranged to be orthogonal to the line of sight from the viewpoint. Thus, the bomb section 10 (FIG. 4) can be always displayed in a circular shape on the screen of the monitor 2 (FIG. 1).

As shown in FIG.
The texture 41 affixed to 1 is rectangular (in this embodiment, for example, similar to the planar polygon 31), and has a circular portion 42 representing the bomb portion 10 and a transparent portion 43 around the circular portion as a design.

As shown in FIG. 3B, the texture 51 pasted on the plane polygon 32 has a vertex T1.
T4 (in this embodiment, for example, similar to the plane polygon 32), which has, as a design, a linear portion 52 representing a squib and a transparent portion 53 surrounding the linear portion.

The texture to be attached to each polygon of the polygon model 34 has a symbol representing each surface of the mounting portion 12. Further, the texture attached to the plane polygon 33 has a design representing the back side of the squib, that is, a design such that the design of the texture 51 is mirror-inverted.

As shown in FIG. 3C, the texture 61 pasted on the plane polygon 35 has a vertex W1
It is a rectangle (similar to the plane polygon 35 in the present embodiment, for example) of W4, and has, as a design, a spark portion 62 representing a spark and a transparent portion 63 around the spark portion. Also,
The texture pasted on the plane polygon 36 has a symbol representing the back side of the spark, that is, a symbol which is a mirror image of the symbol of the texture 61.

Then, when the corresponding texture is pasted on each polygon, as shown in FIG.
A spark 13 is displayed at the tip of the squib 11 attached to the attachment portion 12 of the above, and an image indicating a state in which the squib 11 is burning is obtained.

Next, with reference to FIGS. 5 to 8, a description will be given of a method of displaying on a monitor the changing state in which the squib is shortened by combustion. FIG. 5 shows the movement of the spark 13 and the plane polygon 3
2, FIG. 6 is a diagram illustrating the reduction of the pasting range 54 of the texture 51, and FIGS. 7 and 8 are diagrams in which the reduced texture 51 of the pasting range 54 is pasted on the reduced plane polygon 32. FIG.

First, the reduction of the plane polygon 32 by the polygon vertex coordinate changing means 261 (FIG. 1) will be described with reference to FIG. As shown in FIG. 5, vertices of the planar polygon 32 when reduced are A1 to A4. For the sake of calculation, the reduction of the plane polygon 32 is performed using data on the movement of the plane polygon 35 constituting the spark 13 performed by the spark polygon vertex coordinate processing means 263 (FIG. 1).

The spark polygon vertex coordinate processing means 263 (FIG. 1) calculates data relating to the trajectory of the linear portion 52 of the texture 51 attached to the igniter wire 11, that is, the plane polygon 32, from the polygon data in the ROM 23 (FIG. 1). For example, it is stored in the RAM 24.

Using the data related to the trajectory, the plane polygon 35 moves at a constant speed, for example, along the squib 11, that is, along the linear portion 52 of the texture 51. Thereby, the combustion state of the squib 11 is displayed.

The movement data of the plane polygon 35 at this time is expressed by the following equation 1 in the x, y, z coordinate system shown in FIG.

[0054]

(X, y, z) = (fx, fy, fz) where fx, fy, fz are functions of time, and 0 ≦ fy ≦ K
It is. Here, as shown in FIG. 5, K is the dimension of side P3P4, and fy is the dimension of side A3A4.

In the following, for convenience of explanation, the line of sight from the viewpoint is parallel to the z-axis, and the z-coordinate is omitted.

The plane polygon 32 is reduced using the movement data of the plane polygon 35 (spark 13). The coordinates of the vertices A1 to A4 of the reduced planar polygon 32 are expressed by the following equation (2).

[0057]

A1 (x, y) = (C1, D1 + fy) A2 (x, y) = (C2, D2) A3 (x, y) = (C3, D3) A4 (x, y) = (C4, D4 + fy) where C1 to C4 and D1 to D4 are the original planar polygons 3
The constants are set in correspondence with the coordinates of the vertices P1 to P4 of two, and may be the coordinates of the vertices P1 to P4, for example, as shown in Expression 3 below.

[0058]

P1 (x, y) = (C1, D1) P2 (x, y) = (C2, D2) P3 (x, y) = (C3, D3) P4 (x, y) = (C4, D4) In this case, reduction of the plane polygon 32 is performed on the side P2P3.
Is fixed so that the side A1A4 approaches the side A2A3. As a result, the plane polygon 32 is reduced in the y-axis direction.

As described above, the polygon vertex coordinate changing means 2
According to 61 (FIG. 1), the coordinates of the vertices A1 to A4 of the reduced plane polygon 32 are calculated according to the above equation (2).

Next, with reference to FIG. 6, the reduction of the pasting range 54 of the texture 51 by the texture pasting range changing means 262 (FIG. 1) will be described. As shown in FIG. 6, the coordinates of the texture 51 are two-dimensional U and V with the origin at the upper left.
Define in coordinate system. In addition, the pasting range 5 of the texture 51
The vertices of No. 4 are A'1 to A'4.

Here, since the coordinates of the texture basically do not depend on the size of the polygon, the pasting range 54 is determined by using the movement data fy of the plane polygon 35 (spark 13) as a ratio.
Used to reduce

That is, the vertices T1 to T of the texture 51
Assuming that the coordinates of No. 4 are the following equation 4, the vertex A ′ of the pasting range 54
The coordinates of 1 to A′4 are given by the following equation (5).

[0063]

T1 (U, V) = (0,0) T2 (U, V) = (0,1) T3 (U, V) = (1,1) T4 (U, V) = (1,1) 0)

[0064]

A'1 (U, V) = (0,1-fy / K) A'2 (U, V) = (0,1) A'3 (U, V) = (1,1) A′4 (U, V) = (1, 1−fy / K) As described above, the vertices A′1 to A ′ of the pasting range 54 are obtained by the texture pasting range changing unit 262 (FIG. 1) according to the above Expression 5. 4 are calculated. Thereby, the pasting range 54 of the texture 51 is reduced in accordance with the reduction of the plane polygon 32.

Next, shortening of the squib 11 will be described with reference to FIGS. At the start of combustion of the squib 11,
As shown in FIG. 7, the texture 51 is pasted as it is as the pasting range 54 on the plane polygon 32 of the vertices A1 to A4 (for example, the original size of the vertices P1 to P4), and the long-sized igniter 11 is displayed.

Further, in order to make the burning of the squib 11 appear to proceed, the plane polygon 32 is sequentially reduced in the y-axis direction, and the pasting range 54 of the texture 51 is reduced in accordance with the reduction. As shown in 8,
The shortened squib 11 is displayed.

As described above, the planar polygon 32 is reduced with the lapse of time, and the attached area 54 of the texture 51 is reduced in accordance with the reduction. Can be displayed.

Further, by moving the planar polygon 35 forming the spark 13 along the linear portion 52 of the texture 51, the shortening of the squib 11 due to combustion can be expressed more realistically.

It should be noted that the present invention is not limited to the above embodiment, but can adopt the following modifications.

(1) In the above embodiment, the fuse is used as the character. However, the present invention is not limited to this, and any object may be used as long as it shortens as time passes. For example, an object that is shortened by burning, for example, a cigarette, an incense stick, or a firework may be used. In addition, for example, an object whose tip disappears and shortens due to dissolution or corrosion, for example, a metal wire that dissolves and shortens when immersed in an acidic liquid may be used.

(2) In the above-described embodiment, the fuse is shortened with the passage of time as the character. However, the present invention is not limited to this. A pattern in which the pattern gradually changes from the base end depending on light and darkness or color may be displayed.

In this case, the coordinates of the vertices of the polygons constituting the bar graph of the maximum size and the texture representing the bar graph of the maximum size are stored in the ROM 23, and the polygon vertex coordinate changing means 261 changes the bar graph of the bar graph displayed on the monitor 2. The vertex coordinates of the polygon may be changed according to the dimensions, and the texture pasting range may be changed by the texture pasting range changing means 262 in accordance with the change.

(3) The character is an object that gradually disappears or appears over time, and can be applied to scenes frequently performed in science fiction (SF).

For example, when a person, an object, or the like is transferred to a different place, the present invention can be applied to a scene that gradually disappears from one end at a transfer source and a scene that gradually appears from one end at a transfer destination. Also, for example, when a person or an object comes and goes through an invisible door set between different dimensions, it is applied to a scene that gradually disappears from one end and a scene that gradually appears from one end it can. Further, for example, the present invention can be applied to a scene where a transparent person gradually disappears from a part of the body and a scene where the transparent person gradually appears.

(4) In the above embodiment, as shown in FIG. 5, at each of the vertices A1 to A4 of the plane polygon 32, the side A2A3 is fixed to the side P2P3 of the original plane polygon 32, and the side A1A4 is set to the side A2A3. By approaching,
Although the plane polygon 32 is reduced, the side A2A3 is changed to the side P of the original plane polygon 32 in accordance with the character expansion or contraction mode, for example, shortening from both ends.
The plane polygon 32 may be reduced in such a manner that it is not fixed to 2P3.

Also, regarding the pasting range 54 of the texture 51 shown in FIG. 6, the mode of reduction may be similarly changed according to the mode of expansion or contraction of the character.

(5) In the above embodiment, the plane polygon 3
The coordinates of the vertices A1 to A4 when the size of the texture 51 is reduced are calculated by the above equation 2, and the vertices A ′ of the pasting range 54 of the texture 51
Although the coordinates of 1 to A′4 are calculated by the above equation 5, the present invention is not limited to this.

For example, the plane polygon 35 (spark 1
The coordinate values are calculated for the various values of the movement data fy in 3) according to Equations 2 and 5 above, and these are stored in the ROM 23 as table data. Of the vertices A1 to A4, and the coordinates of the vertices A'1 to A'4 of the pasting range 54 may be obtained.

According to this embodiment, the required memory capacity can be reduced as compared with storing polygons and textures of various sizes in advance.
Can be smoothly expressed.

(6) ROM 23 as a readable recording medium
May be constituted by a portable recording medium such as a CD-ROM, an optical disk, a memory card and a floppy disk. This makes it easy to exchange and update game programs.

As described above, according to the present invention, there is provided an image creating apparatus for creating an image of a character and displaying the image on a display means, comprising: polygon data storage means for storing vertex coordinates of polygons constituting the character; Texture data storage means for storing the vertex coordinates of the texture representing the texture, polygon vertex coordinate changing means for changing the vertex coordinates of the polygon with the passage of time, and a pasting range to be pasted on the polygon in the texture. Texture pasting range changing means for changing corresponding to the change of the vertex coordinates, and drawing processing means for pasting the pasting range changed by the texture pasting range changing means to the polygon changed by the polygon vertex coordinate changing means. It is provided.

According to this configuration, the coordinates of the vertices of the polygons and the pasting range of the texture are changed with the passage of time, so that the polygons and the textures of various sizes are not stored in advance, and one direction or a plurality of the characters can be stored. The disappearance or appearance in the direction, or the reduction or enlargement can be smoothly expressed while maintaining the original shape of the remaining part.

The polygon is a quadrangle composed of four vertices, and the texture and the pasting range are
The polygon vertex coordinate changing means changes the coordinates of two adjacent vertices in the vertex coordinates of the polygon in one direction with respect to the other two vertices. The texture pasting range changing means may change the pasting range in the one direction.

In this case, the disappearance or appearance of the character in the one direction can be expressed smoothly.

The polygon is a rectangle composed of four vertices, and the texture and the pasting range are
The polygon vertex coordinate changing means changes the coordinates of two adjacent vertices of the polygon vertex coordinates in a direction parallel to one side of the rectangle with respect to the other two vertices. The texture pasting range changing means may change the pasting range in the parallel direction.

In this case, it is possible to easily change the coordinates of the vertices of the polygon and the range of the pasted texture.

Further, the polygon vertex coordinate changing means includes:
Fixing the vertex coordinates of both ends of one orthogonal side perpendicular to the one side and changing the vertex coordinates of both ends of another orthogonal side parallel to the one orthogonal side, the texture pasting range changing means, The vertices at both ends of one side of the pasting range corresponding to one orthogonal side of the polygon are fixed, and the vertices at both ends of a side parallel to the one side are changed, and the texture is applied to the one orthogonal side. The corresponding one end may be unchanged, and the other end corresponding to the other orthogonal side may represent a linear character that changes in at least one of expansion and contraction with the passage of time.

In this case, the change of the vertex coordinates of the polygon and the change of the texture pasting range can be performed more easily. Further, in the character of the linear body, one end functions as a base end without change, and the other end can smoothly express the expansion or contraction of the character performing at least one of expansion and contraction with the passage of time. .

Further, the polygon vertex coordinate changing means includes:
The polygon is reduced by making the vertex coordinates of both ends of the other orthogonal side closer to the vertex coordinates of both ends of the one orthogonal side, and the texture pasting range changing means includes one side of the pasting range. The sticking range is reduced by bringing the vertices of both ends of the parallel side closer to the vertices of both ends of the object, and the texture represents a character of a burning body that is shortened by burning from the other end. It may be something.

Thus, it is possible to smoothly represent the shortening of a character composed of a linear combustion body, which is shortened by burning from the other end without changing one end.

Further, a spark polygon data storage means for storing vertex coordinates of spark polygons constituting a spark generated at the other end of the combustion body, and a spark texture attached to the spark polygon and representing the spark. Spark texture data storage means, spark polygon vertex coordinate processing means for moving the vertex coordinates of the spark polygon in accordance with the shortening of the other end of the burning body, and a second drawing for attaching the spark texture to the spark polygon And a processing unit.

As a result, an image of the spark moving in correspondence with the other end of the burning body shortened by burning is created and displayed on the display means, and the burning body shortened by burning is represented more realistically. can do.

[0093]

According to the first, seventh and eighth aspects of the present invention, the vertex coordinates of the polygons constituting the character are changed with the passage of time, and the pasting range to be pasted on the polygons in the texture representing the character is changed. Since the changed pasting range is pasted to the modified polygon by changing the vertex coordinates of the polygon in response to the change, the polygons and textures of various sizes are not stored in advance. The disappearance or appearance, or the reduction or enlargement of the character in one or more directions, or the reduction or enlargement can be smoothly expressed while maintaining the original shape of the remaining part.

According to the second aspect of the present invention, the polygon is a quadrangle composed of four vertices, and the texture and the pasting range are quadrangles composed of four vertices. The changing means changes the coordinates of two adjacent vertices in the vertex coordinates of the polygon in one direction with respect to the other two vertices, and the texture pasting range changing means changes the pasting range in the one direction. , The disappearance or appearance of the character in the one direction can be smoothly expressed.

According to the third aspect of the present invention, the polygon is a rectangle composed of four vertices, the texture and the pasting range are rectangles composed of four vertices, and the polygon vertex coordinates The changing means changes the coordinates of two adjacent vertices of the vertex coordinates of the polygon with respect to the other two vertices in a direction parallel to one side of the rectangle. By changing the pasting range in the parallel direction, it is possible to easily change the coordinates of the vertices of the polygon and the pasting range of the texture.

According to the fourth aspect of the present invention, the polygon vertex coordinate changing means fixes the vertex coordinates of both ends of one orthogonal side orthogonal to the one side and fixes the other vertex coordinates parallel to the one orthogonal side. The texture pasting range changing means fixes the vertices at both ends of one side of the pasting range corresponding to one orthogonal side of the polygon, and changes the vertex coordinates of both ends of the perpendicular side. The texture at the both ends of the side is changed, and the texture has at least one end corresponding to the one orthogonal side unchanged and the other end corresponding to the other orthogonal side extending and contracting as time passes. By representing a linear character that performs one of the changes, it is possible to change the vertex coordinates of the polygon and change the range of pasting the texture more easily. Further, in the character of the linear body, one end functions as a base end without change, and the other end can smoothly express the expansion or contraction of the character performing at least one of expansion and contraction with the passage of time. .

Further, according to the fifth aspect of the present invention, the polygon vertex coordinate changing means causes the vertex coordinates of both ends of the other orthogonal side to approach the vertex coordinates of both ends of the one orthogonal side. The texture pasting range changing means reduces the pasting range by causing the vertices at both ends of the parallel side to approach the vertices at both ends of one side of the pasting range. Yes,
Since the texture represents the character of the burning body shortened by burning from the other end, the character consisting of a linear burning body shortened by burning from the other end without changing one end is shortened. Can be expressed smoothly.

Further, according to the invention of claim 6, spark polygon data storage means for storing the coordinates of the vertices of the spark polygon constituting the spark generated at the other end of the combustion body, and affixed to the spark polygon. A spark texture data storage means for storing a spark texture representing the spark; a spark polygon vertex coordinate processing means for moving the vertex coordinates of the spark polygon in correspondence with the shortening of the other end of the burning body; By having the second drawing processing means attached to the spark polygon, an image of a spark moving corresponding to the other end of the burning body shortened by burning is created and displayed on the display means, The combustion body shortened by combustion can be more realistically expressed.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an electric configuration of an embodiment of a video game apparatus to which an image creating apparatus according to the present invention is applied, and functional blocks of a control unit.

FIG. 2 is a wire frame diagram showing polygons forming a time bomb.

FIGS. 3A and 3B are diagrams showing textures pasted on each part of the time bomb, where FIG. 3A shows the texture of the bomb, FIG. 3B shows the texture of the fuse, and FIG.

FIG. 4 is a diagram showing a state in which a texture is pasted on a polygon.

FIG. 5 is a diagram illustrating movement of a spark and reduction of a planar polygon.

FIG. 6 is a diagram for explaining reduction of a texture pasting range.

FIG. 7 is a diagram showing a state in which a texture is pasted on a plane polygon.

FIG. 8 is a diagram illustrating a state in which a reduced texture pasting range is pasted on a reduced planar polygon.

FIG. 9 is a perspective view showing an appearance of an embodiment of a video game device to which the image creating device according to the present invention is applied.

FIG. 10 is a diagram showing one screen of a game displayed on a monitor and a coordinate system set in the game.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Driver's seat 2 Monitor 9 Start switch 10 Bomb part 11 Fuse wire 12 Attachment part 13 Spark 21 Coin detection part 22 Operation operation part 23 ROM 24 RAM 25 Control part 251 Game control part 252 Signal processing part 253 Drawing processing part 254 Communication control part 261 Polygon vertex coordinate changing means 262 Texture pasting range changing means 263 Spark polygon vertex coordinate processing means B Time bomb

Claims (8)

(57) [Claims] 1. An image creating apparatus for creating an image of a character and displaying the image on a display means, comprising: polygon data storage means for storing vertex coordinates of polygons constituting the character; and vertex coordinates of a texture representing the character. Texture data storage means, polygon vertex coordinate changing means for changing the vertex coordinates of the polygon over time, and a pasting range to be pasted on the polygon in the texture corresponding to the change of the vertex coordinates of the polygon. An image, comprising: a texture pasting range changing unit to be changed; and a drawing processing unit pasting the pasting range changed by the texture pasting range changing unit to the polygon changed by the polygon vertex coordinate changing unit. Creating device. 2. The image creating apparatus according to claim 1, wherein the polygon is a quadrangle composed of four vertices, the texture and the pasting range are quadrangles composed of four vertices, The coordinate changing means changes the coordinates of two adjacent vertices in the vertex coordinates of the polygon in one direction with respect to the other two vertices. The texture pasting range changing means changes the pasting range to the one vertex. An image forming apparatus characterized in that the direction is changed. 3. The image creating apparatus according to claim 2, wherein the polygon is a rectangle composed of four vertices, the texture and the pasting range are rectangles composed of four vertices, The coordinate changing means changes the coordinates of two adjacent vertices of the vertex coordinates of the polygon with respect to the other two vertices in a direction parallel to one side of the rectangle. The texture pasting range changing means includes: An image creating apparatus for changing the attaching range in the parallel direction. 4. The image creating apparatus according to claim 3, wherein the polygon vertex coordinate changing means fixes vertex coordinates of both ends of one orthogonal side orthogonal to the one side and fixes the vertex coordinates parallel to the one orthogonal side. The texture pasting range changing means fixes the vertices at both ends of one side of the pasting range corresponding to one orthogonal side of the polygon and is parallel to the one side. In the texture, one end corresponding to the one orthogonal side is unchanged, and the other end corresponding to the other orthogonal side expands and contracts over time. An image creating apparatus, which represents a linear character performing at least one change. 5. The image creating apparatus according to claim 4, wherein the polygon vertex coordinate changing means causes the vertex coordinates of both ends of the other orthogonal side to approach the vertex coordinates of both ends of the one orthogonal side. The texture pasting range changing means reduces the pasting range by causing the vertices at both ends of the parallel side to approach the vertices at both ends of one side of the pasting range. Wherein the texture represents a character of a burning body that is shortened by burning from the other end. 6. The image forming apparatus according to claim 5, wherein spark polygon data storage means for storing vertex coordinates of spark polygons constituting a spark generated at the other end of the combustion body, and pasted to the spark polygon. A spark texture data storage means for storing a spark texture representing the spark; and a spark polygon vertex coordinate processing means for moving the vertex coordinates of the spark polygon in accordance with the shortening of the other end of the burning body. The drawing processing means further pastes the spark texture on the spark polygon. 7. An image creating method for creating an image of a character and displaying the image on a display means, wherein the vertex coordinates of a polygon constituting the character are changed over time, and the polygons in the texture representing the character are changed to the polygons. An image creating method, wherein a pasting range to be pasted is changed in accordance with a change in vertex coordinates of the polygon, and the changed pasting range is pasted to the changed polygon. 8. An image creation program for creating an image of a character and displaying the image on a display means, the polygon vertex coordinate changing step of changing the vertex coordinates of a polygon constituting the character with the passage of time, A texture pasting range changing step of changing a pasting range to be pasted on the polygon in the texture to be represented in accordance with a change in the vertex coordinates of the polygon; And a readable recording medium having recorded thereon an image creation program.