JP3364456B2 - 3D simulator apparatus and image composition method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a three-dimensional simulator device and image synthesizing method capable of simulating a virtual three-dimensional space.

[0002]

2. Description of the Related Art Conventionally, various types of three-dimensional simulator devices are known, which are used for, for example, a three-dimensional game or a simulator for controlling airplanes and various vehicles. In such a three-dimensional simulator device, the three-dimensional object 300 shown in FIG.
Image information relating to is stored in advance in the device. Here, the three-dimensional object 300 is the player 302.
Represents a landscape or the like that can be seen through the screen 306. Then, the pseudo three-dimensional image 308 is displayed on the screen 30 by performing perspective projection conversion of the image information of the three-dimensional object 300 representing the landscape or the like on the screen 306.
The image is displayed on top of 6. In this device, the player 30
When 2 performs an operation such as rotation and translation on the operation panel 304, a predetermined three-dimensional calculation process is performed based on the operation signal. Specifically, first, a calculation process is performed to determine how the position of the viewpoint of the player 302, the direction of the line of sight, the position, the direction of the moving body on which the player 302 is boarding, etc. change according to the operation signal. Next, a calculation process is performed to find what the image of the three-dimensional object 300 looks like on the screen 306 according to the change in the viewpoint position, the line-of-sight direction, and the like. Then, the above arithmetic processing is performed by the player 302.
It is performed in real time following the operation of. As a result, the player 302 can see in real time, as a pseudo three-dimensional image, a change in the viewpoint position of the player, a change in the line-of-sight direction, or the position of the moving body on which the player rides, a change in the scenery, etc., in a pseudo-three-dimensional image. You will be able to experience a virtual three-dimensional space.

FIG. 25B shows an example of a display screen formed by the above three-dimensional simulator device.

Now, in driving games, driving simulators, etc., if sub screens such as rearview mirrors and side mirrors can be formed on the display screen (main screen) shown in FIG. 25B, the realism of the game or simulation will be improved. You can

In this case, in order to enhance the realism of the game or the like, it is desirable to display a realistic pseudo three-dimensional image on the sub-screen such as the rearview mirror as well as the main screen.

However, when it is attempted to display a realistic three-dimensional image on the sub-screen as well as the main screen, it is necessary to perform arithmetic processing for forming the sub-screen. However, in such a simulator device, 1
There is a constraint that the arithmetic processing for image composition must be completed within a frame, for example, within 1/60 seconds. Therefore, if the pseudo-three-dimensional image synthesis should be performed on the sub-screen as described above, the calculation process may not be in time, and the data to be displayed on the main screen may be lost. Is deteriorated.

[0007]

[0008]

In order to solve the above-mentioned problems, a three-dimensional simulator apparatus according to the present invention sets a position of a plurality of display objects forming a virtual three-dimensional space or a position and a direction of a virtual object to display a virtual image. A virtual three-dimensional space calculating means for performing a forming operation of a three-dimensional space, a texture calculating means for performing a calculation for applying a texture to polygons forming a display object, and a texture information applied by the texture calculating means is stored. It includes a texture information storing means for, and image synthesis means for synthesizing the visual images from any viewpoint in the virtual three-dimensional space according to the result from the virtual three-dimensional space calculation means, the virtual 3-dimensional space Starring
The calculating means has the same position or the same position and direction.
And the number of polygons that make up the display object is different
The texture is calculated by performing an operation to form a virtual three-dimensional space.
The calculating means calculates the position in the different virtual three-dimensional space.
Part or all of the display object with the same position and direction
The texture stored in the texture information storage means for
It is characterized by including means for commonly using the steward information.
It

[0009]

[0010]

[0011]

[0012]

[0013]

[0014]

[0015]

[0016]

[0017]

Further, the three-dimensional simulator apparatus according to the present invention is a virtual three-dimensional space operation for forming a virtual three-dimensional space by setting the positions or positions and directions of a plurality of display objects forming the virtual three-dimensional space. Means and image synthesizing means for synthesizing a view field image from an arbitrary viewpoint in the virtual three-dimensional space based on a calculation result from the virtual three-dimensional space calculating means, wherein the virtual three-dimensional space calculating means is The image combining means includes means for forming a plurality of virtual three-dimensional spaces in which the positions or positions and directions of the display objects are the same and the number of polygons forming the display objects are different, and the image synthesizing means displays images on the main screen as A means for synthesizing a view image in a virtual three-dimensional space in which the number of polygons of a display object is large among the plurality of virtual three-dimensional spaces, and an image displayed on one or a plurality of sub screens And characterized in that it comprises a means for combining the visual image in the other virtual three-dimensional space is small number of polygons displayed objects.

According to the present invention, a plurality of virtual three-dimensional spaces, for example, first and second virtual three-dimensional spaces, having the same position or position and direction of the display object and different numbers of polygons forming the display object are provided. It is formed. Then, for example, in the second virtual three-dimensional space, the display object having the smaller number of polygons than the display object in the first virtual three-dimensional space has the same position and direction (position) as the display object in the first virtual three-dimensional space. Only the specified position is the same for display objects that are specified only). Then, in this case, the view field image in the first virtual three-dimensional space in which the number of polygons of the display object is large is displayed on the main screen, and the view field image in the second virtual three-dimensional space in which the number of polygons of the display object is small is displayed. It will be displayed on the screen. As described above, according to the present invention, a virtual three-dimensional space is formed in the formation of the sub-screen in the same manner as the formation of the main screen without significantly deteriorating the quality of the image displayed on the main screen. The view image can be combined, and both the main screen and the sub screen, which have a high sense of realism, can be displayed with limited arithmetic processing capability. This makes it possible to provide a three-dimensional simulator device that can generate a high-quality image in real time. Further, for example, it becomes possible to display a realistic rear view mirror, a side mirror, or an image of the moving body viewed from above on the main screen.
When applying the sub-screen to the rear-view mirror and side-view mirror, the rearward view image of the operator is obtained,
This visual field image is left-right inverted.

Further, according to the present invention, there is provided texture calculation means for performing a calculation for applying a texture to the polygons constituting the display object, and texture information storage means for storing information on the texture applied by the texture calculation means. And the texture computing means includes the different virtual 3
It is characterized in that it includes means for commonly using the texture information stored in the texture information storage means for a part or all of the display objects having the same position or the same position and direction in the dimensional space.

According to the present invention, it is not necessary to separately prepare texture information for each display object in different virtual three-dimensional spaces, and the storage capacity required for the texture information storage means can be saved. As a result, the cost of the device can be reduced. Moreover, according to the present invention, since the texture mapping is also performed on the display object for the sub screen by the common texture information, the realism of the image displayed on the sub screen can be enhanced similarly to the main screen. . This makes it possible to create unprecedented video effects and enhance the fun of the game. Note that, in the present invention, it is not necessary to commonly use the texture information for all the display objects, and different texture information may be prepared for those in which the distortion and the like increase due to the common use.

Further, the three-dimensional simulator device according to the present invention sets the object number and position information of a plurality of display objects forming the virtual three-dimensional space or the display object information including the object number, position information and direction information. From the virtual three-dimensional space calculating means for performing the formation calculation of the virtual three-dimensional space, the image information storing means for storing the image information of the object designated by the object number, the display object information, and the image information storing means. Image synthesizing means for synthesizing a field-of-view image from an arbitrary viewpoint in the virtual three-dimensional space based on the image information read out based on the object number, and the virtual three-dimensional space computing means includes position information or position information. Information that has the same information and direction information but different object numbers The image information storage means stores the image information in the image information storage means so that, for objects designated by the different object numbers, the number of polygons forming the object is different, and the image composition means, Means for synthesizing the visual field image displayed on the main screen based on the image information of the object having a large number of polygons, and visual field image displayed on one or a plurality of sub-screens based on the image information of the object having a small number of polygons And means for synthesizing

According to the present invention, a plurality of pieces of display object information having the same position information and different object numbers, for example, first and second display object information are formed. Then, for example, for the object designated by the object number of the first display object information, the image information is formed so that the number of polygons is large. On the other hand, for the object designated by the object number of the second display object information, the image information is formed so that the number of polygons is small. Then, the visual field image displayed on the main screen is synthesized based on the image information read by the object number of the first display object information, and the image information read by the object number of the second display object information is combined. The visual field image displayed on the sub-screen is combined based on the above. As described above, the main screen can be represented by an object composed of many polygons, and the sub screen can be represented by an object composed of a small number of polygons. As a result, the number of polygons required for forming the sub-screen can be reduced without significantly deteriorating the quality of the image displayed on the main screen, and real-time image processing can be maintained. Moreover, since the sub-screen is formed by synthesizing the field-of-view image from an arbitrary viewpoint in the virtual three-dimensional space using the display object information and the object image information, the sub-screen is formed as in the case of forming the main screen. It is possible to enhance the realism of the image displayed on.

According to the present invention, the image information storage means stores image information of a plurality of objects having different polygon numbers, and the image synthesizing means selects from the plurality of objects in a given selection range. A means for synthesizing a view image based on the image information of the object,
The selection range of the object for synthesizing the field-of-view image of the main screen is a selection range including more objects having a larger number of polygons than the selection range of the object for synthesizing the field-of-view image of the sub-screen. It is characterized by being

According to the present invention, the image information of a plurality of objects having the same position information and different numbers of polygons, for example, the image information of the first, second and third objects is prepared. Here, for example, the first object has the largest number of polygons, and the third object has the smallest number of polygons. Then, when synthesizing the visual field images of the main screen, the visual field images are synthesized based on the image information of the first, second, and third objects. On the other hand, when synthesizing the view image of the sub-screen, for example, the second and third objects are selected from the first, second, and third objects, and based on the image information of the second and third objects. The view image is synthesized. With this, for example, in the main screen, objects for long distance, medium distance, and short distance are selectively used according to the distance, and in the sub screen, objects for medium distance and short distance are selectively used according to the distance. Processing becomes possible. This makes it possible to reduce the number of polygons required to form the sub screen as compared with the number of polygons required to form the main screen as a whole.
As a result, it is possible to display a realistic image on the sub screen without significantly affecting the image combining process on the main screen.

Further, according to the present invention, the virtual three-dimensional space computing means includes means for omitting the formation of the plurality of display object information for a part of the display object, and a part of the display object displayed on the main screen. Is characterized in that the display on the sub-screen is omitted.

According to the present invention, for example, an object such as a building displayed on the main screen is omitted from the sub screen. Since the screen size of the sub screen is usually smaller than that of the main screen, even if the display of some objects is omitted in this way, the player or the like does not notice. On the other hand, by omitting the display of some objects on the sub-screen in this way, it is possible to reduce the number of polygons required for forming the sub-screen.

Further, the present invention includes means for displaying a map by dividing a map forming a virtual three-dimensional space into a predetermined number and arranging map objects on the divided map, and displaying the map on the main screen. The map is divided into a larger number of divisions than the map displayed on the sub-screen.

According to the present invention, a precisely expressed map can be displayed on the main screen and a simplified expressed map can be displayed on the sub screen. Become. As a result, it is possible to reduce the number of polygons required for forming the sub-screen, and it is possible to display a realistic image on the sub-screen without significantly affecting the image combining processing on the main screen.

Further, the present invention includes a texture calculation means for performing a calculation for applying a texture to the polygons forming the object, and a texture information storage means for storing the information of the texture applied by the texture calculation means. , The image information storage means stores vertex texture coordinates for designating the texture information in the texture information storage means as a part of the image information, and the texture calculation means displays an object displayed on the main screen. It is characterized in that it includes means for commonly using a part of the vertex texture coordinates used for applying the texture to the polygon of the above when applying the texture to the polygon of the object displayed on the sub-screen.

According to the present invention, it is not necessary to separately prepare texture information for the main screen and the sub screen, and the storage capacity required for the texture information storage means can be saved. As a result, the cost of the device can be reduced. Moreover, according to the present invention, since the texture mapping is performed also on the display object for the sub screen, the realism of the image displayed on the sub screen can be enhanced as in the case of the main screen. According to the present invention, not only vertex texture coordinates but also vertex luminance information can be commonly used.

[0032]

BEST MODE FOR CARRYING OUT THE INVENTION 1. Outline of Game First, an example of a three-dimensional game realized by the present three-dimensional simulator device will be briefly described.

A three-dimensional game realized by the present three-dimensional simulator device runs on a course formed on a map by a moving body such as a player racing car, and is operated by an opponent racing car or a computer operated by another player. It is a racing car game in which you compete with a computer car for ranking. FIG. 2 shows an example of an external view of the present three-dimensional simulator device. This 3
The dimensional simulator device is formed similarly to the driver's seat of an actual racing car. Then, the player sits on the seat 18 and looks at the game screen (pseudo three-dimensional image of the scenery seen from the driver's seat of the racing car) displayed on the CRT (display) 10 while operating the steering wheel 14 provided on the operation unit 12. , Accelerator 15, shift lever 16
Play a game by driving a fictitious racing car by operating the etc.

FIG. 3 shows a virtual 3 in this three-dimensional game.
An example of a dimensional space is shown. In this way, the three-dimensionally formed courses 20 are arranged in the virtual three-dimensional space in this three-dimensional game. Then, around the course 20, three-dimensional objects such as buildings 60, tunnels 62, mountains 64, cliffs 66, and walls 68 are arranged. The player operates the racing car while watching the CRT 10 showing these courses and the like. Then, starting from the start point 70, orbiting the course 20 and orbiting the course a predetermined number of times, the goal is reached, and the player's ranking is determined.

FIG. 4 shows a CRT in this three-dimensional game.
An example of the game screen displayed on 10 is shown. As shown in FIG. 4, for example, the opponent racing car 52 is displayed on the main screen 1, and the player is on the main screen 1.
While watching, you will compete with this opponent racing car 52. As shown in FIG. 4, in addition to the opponent racing car 52, the road surface 21, the wall 22 of the tunnel, and the like are displayed on the main screen 1. Then, a rear-view mirror (sub-screen) 2 is further displayed on the main screen 1, and by looking at this rear-view mirror 2, the player can
It can be recognized that the computer car 54 is chasing from behind. As a result, it is possible to greatly enhance the realism and interest of the game. Further, the road surface 23 and the wall 24 are projected on the rear-view mirror 2 as in the case of the main screen. As with the road surface 21 of the main screen 1, an asphalt-like pattern is applied to the road surface 23 reflected on the rearview mirror 2, and a center line 26 and the like are also drawn. Thus, according to this 3D game,
The image displayed on the rear-view mirror 2 is as realistic as the main screen 1. On the other hand, as shown in FIG.
For the opponent racing car 52 on the main screen 1,
Tail lamps and the like are drawn in detail, and the shape of the opponent racing car 52 is also drawn precisely so as to be close to a live-action image. On the other hand, the computer car 54 reflected in the rearview mirror 2 is
It is drawn in a more simplified form.

In the present embodiment, as will be described later, a virtual three-dimensional space for drawing the main screen 1 and a virtual three-dimensional space for drawing the rearview mirror (sub-screen) 2 are separately prepared, whereby As shown in FIG. 4, it has succeeded in projecting a realistic image on the rearview mirror 2 as well as the main screen 1. On the other hand, the rearview mirror 2 has a display range smaller than that of the main screen 1, and is not noticed by the player even if the precision of the display object is lowered to some extent. Therefore, the number of polygons forming the display object on the rearview mirror 2 is smaller than that on the main screen 1. As a result, it is possible to reduce the total number of polygons that need to be calculated while maintaining a sense of realism, and effectively prevent a situation in which video data on the main screen 1 is lost, for example. ing.

It should be noted that although the above description has been made with reference to the case of a game by one or two players, the present invention is not limited to this and can naturally be applied to a multi-player type game of three or more players.

2. Description of Entire Device FIG. 1 shows a block diagram of an embodiment of a three-dimensional simulator device according to the present invention.

As shown in FIG. 1, the present three-dimensional simulator apparatus has an operation unit 12 for a player to input an operation signal, and a virtual three-dimensional space operation unit for performing an operation for setting a virtual three-dimensional space by a predetermined game program. 100, an image composition unit 200 that forms a pseudo three-dimensional image at the player's viewpoint position, and a CRT that outputs the pseudo three-dimensional image
(Display) 10 is included.

For example, when the present three-dimensional simulator device is applied to a racing car game,
A steering wheel 14, an accelerator 15, etc. for driving a racing car are connected, and an operation signal is input thereby.

In the virtual three-dimensional space calculation unit 100, a plurality of display objects in the virtual three-dimensional space shown in FIG. 3, such as the course 20, the building 60, the tunnel 62, the mountain 64, and the walls 66 to 6 are displayed.
8. Calculation for setting the position or position and direction of the player racing car, opponent racing car, computer car, etc. is performed. This calculation is performed based on an operation signal from the operation unit 12, map information set and stored in advance, and the like.

Then, the image synthesizing unit 200 performs a computation for synthesizing a view image from an arbitrary viewpoint in the virtual three-dimensional space based on the computation result from the virtual three-dimensional space computing unit 100. Then, the synthesized view image is CRT1.
It is output from 0.

In the present embodiment, the virtual three-dimensional space calculation unit 100 performs the calculations to obtain the first and second virtual images in which the positions or positions and directions of the display objects are the same and the number of polygons forming the display objects is different. A three-dimensional space is formed. That is, two virtual three-dimensional spaces as shown in FIG. 3 are prepared. However, the number of polygons forming the display object is different between the two virtual three-dimensional spaces, and the number of polygons of the display object in the first virtual three-dimensional space is set to be larger. Then, in the image synthesizing unit 200, the view image in the first virtual three-dimensional space is synthesized as an image displayed on the main screen. On the other hand, the visual field image in the second virtual three-dimensional space is combined as the image displayed on the sub screen. This makes it possible to form a game screen as shown in FIG. Note that when the sub screen is used as the rearview mirror 2, it is as follows. That is, in the first virtual three-dimensional space, a view field image is formed when the viewpoint position is the position of the player car and the line-of-sight direction is forward. On the other hand, in the second virtual three-dimensional space, a field-of-view image is formed when the line-of-sight direction is backward. Then, the visual field image calculated in the second virtual three-dimensional space is laterally inverted and displayed on the rearview mirror 2.

Next, the specific configurations of the virtual three-dimensional space computing unit 100 and the image synthesizing unit 200 will be described. FIG. 5 shows an example of a block diagram of the virtual three-dimensional space calculation unit 100, and FIGS. 15 and 18 show examples of block diagrams of the image supply unit 210 and the image forming unit 228 in the image combining unit 200. Be done.

3. Description of Virtual Three-Dimensional Space Operation Unit As shown in FIG. 5, the virtual three-dimensional space operation unit 100 includes a processing unit 102, a virtual three-dimensional space setting unit 104, a movement information operation unit 106, a display object information storage unit (object). The information storage unit) 108 is included.

Here, the processing unit 102 controls the entire three-dimensional simulator apparatus. In addition, the processing unit 102
A predetermined game program is stored in the storage unit provided inside. The virtual three-dimensional space calculation unit 100 calculates the virtual three-dimensional space according to the game program and the operation signal from the operation unit 12.

The movement information calculation unit 106 calculates the movement information of the racing car according to the operation signal from the operation unit 12, the instruction from the processing unit 102, and the like.

The display object information storage unit 108 stores the position information / direction information of the display object forming the virtual three-dimensional space and the object number of the object to be displayed at this position (hereinafter, this stored information). The position information / direction information and the object number are referred to as display object information (object information)). In FIG. 6, the display object information storage unit 10 is shown.
An example of the display object information stored in 8 is shown. Further, FIG. 7 shows the relationship between the position information and direction information (Xm, Ym, Zm, θm, φm, ρm) included in these display object information and the absolute coordinate system (Xw, Yw, Zw).

Here, the object includes a moving object representing a racing car and the like, and a map object representing a course and the like, and these objects are represented by a set of polygonal polygons as shown in FIG. ing.

The display object information stored in the display object information storage unit 108 is read by the virtual three-dimensional space setting unit 104. In this case, the display object information storage unit 108 stores the display object information in the frame immediately preceding the frame. Then, in the virtual three-dimensional space setting unit 104, the read display object information and the movement information calculation unit 106.
The display object information (position information, direction information) in the frame is obtained based on the movement information calculated in.

In this way, the virtual three-dimensional space setting unit 1
In 04, the display object information of all the display objects forming the virtual three-dimensional space in the frame is set.

The display object information is updated frame by frame as the game progresses as described above when the display object is a moving body such as a racing car, and the display object information on the map is usually It is a fixed value. However, in the map showing meteorites and the like in the space game, the rotation information and the like may be changed as the game progresses. Further, some maps may have position information but not direction information. Further, when the map is divided into a plurality of divided maps and a map object is set in this divided map as described later, the map is stored in the virtual three-dimensional space setting unit 104 as shown in FIG. The setting unit 110 is provided, and the map setting unit 110 sets the map.

In the present embodiment, the virtual three-dimensional space setting unit 104 performs a predetermined calculation process so that the position information and the direction information are the same (display without direction information) from the display object information shown in FIG. In the object information, the positional information is the same), and a plurality of pieces of display object information having different object numbers are formed. Specifically, the virtual three-dimensional space setting unit 104
6 reads the display object information shown in FIG. 6 stored in the display object information storage unit 108 and changes only the object number to form a plurality of display object information. Then, the plurality of pieces of display object information thus formed are output to the image combining unit 200.

FIGS. 8A and 8B show an example of a plurality of pieces of display object information thus formed. Figure 8
The display object information shown in (A) is the same as the display object information shown in FIG. On the other hand, the display object information shown in FIG. 8B differs from the display object information shown in FIG. 8A only in the object number. For example, O in FIG.
B0 and OBi + 1 in FIG. 8B have the same position information and direction information (X0, Y0, Z0, θ0, φ0, ρ0), but different object numbers. By thus forming the display object information having the same position information and direction information and different object numbers, the racing cars 48A, 48 having different polygon numbers as shown in FIG.
It becomes possible to express B and 48C. That is, the position information and the direction information are the same in the racing cars 48A, 48B, and 48C, but the object number is O.
It is different from Bi, OBj, and OBk. Object image information of the racing cars 48A, 48B, and 48C (the number of polygons, polygon information, and the like are represented by the object image information) is stored in the display object information storage unit 212 in FIG. 5, and the object number must be designated. Thus, the object image information can be read out. Therefore, by designating different object numbers, it is possible to read racing cars 48A, 48B and 48C having different polygon numbers as shown in FIG. And these racing cars 48
A, 48B, and 48C are arranged at the same position and in the same direction in the first and second virtual three-dimensional spaces. in this way,
By arranging the objects forming the virtual three-dimensional space at the same position and in the same direction with different polygon numbers, it is possible to represent two virtual three-dimensional spaces with different polygon numbers of the display object.

10 and 11 show course objects 30A and 30B (map objects) having different polygon numbers. The course object 30A is accurately drawn by many polygons. On the other hand, the course object 30B is simplified and drawn with a small number of polygons. The course 20 shown in FIG. 3 is configured by arranging such course objects.
Then, in this embodiment, two courses, which are composed of course objects having a large number of polygons and two courses which are composed of course objects having a small number of polygons, are prepared. Also in this case, as in the case of the above-mentioned racing car, by changing only the object number in the display object information shown in FIG. 6, a plurality of display object information regarding the course (map) is formed. .

As described above, two virtual three-dimensional spaces can be represented by forming a plurality of pieces of display object information in which objects having different polygon numbers can be arranged at the same position and in the same direction. Then, the view image in the first virtual three-dimensional space composed of objects having a large number of polygons is displayed on the main screen, and the display image in the second virtual three-dimensional space composed of objects having a small number of polygons. Is displayed on the sub-screen. As a result, the number of polygons required to form the sub screen can be reduced.

When outputting a plurality of display object information from the virtual three-dimensional space computing section 100 to the image synthesizing section 200,
It is desirable to output only the display object information of the objects arranged in the predetermined range determined by the viewpoint position and the line-of-sight direction of the player. For example, it is not necessary to perform image composition processing on a moving object or a map object that is far from the player's viewpoint position and cannot be seen by the player. Therefore, it is desirable to omit the output of the display object information of the object to the image combining unit 200. Further, for example, regarding the objects displayed on the main screen, only the display object information of the objects within a certain range in the front direction of the player is output. On the other hand, regarding the objects displayed on the sub-screen, only the display object information of the objects within a certain range in the backward direction of the player is output. This allows
It is possible to reduce the calculation processing in the image composition unit 200.

By the way, in order to reduce the number of polygons required for forming the main screen and the sub screen, the following method can be further used.

For example, a racing car 48 shown in FIG.
In the first virtual three-dimensional space, A, 48B, and 48C are used as short-distance, medium-distance, and long-distance racing cars, respectively. That is, when the distance between the player car and the racing car is short, the short-distance racing car 48A is displayed on the main screen, and when the distance between the player car and the player car is medium or far, the distance is medium. For distance,
Display the long distance racing cars 48B and 48C on the main screen. As a result, the number of polygons for forming the main screen can be reduced without losing the realism of the displayed image. Then, in the second virtual three-dimensional space, a racing car 48B is used as a short-distance racing car, and a racing car 48C is used as a long-distance racing car, which is used depending on the distance to the player car. This makes it possible to reduce the number of polygons required to form the sub-screen to be smaller than the number of polygons required to form the main screen. Then, by properly using the short distance and long distance racing cars even in the sub screen, it is possible to further reduce the number of polygons required for forming the sub screen.

Further, for example, in the first virtual three-dimensional space, the building 60 in FIG. 3 is arranged, while the second virtual three-dimensional space is arranged.
In the dimensional space, it is also possible to use a method of omitting the building 60. Specifically, in FIG. 6 and FIG.
Display object information is not formed for the building 60 for the second virtual three-dimensional space. This makes it possible to further reduce the number of polygons required to form the sub screen.

Further, for example, as shown in FIG.
When a map forming a dimensional space is divided into a predetermined number of map blocks and map objects are arranged in these map blocks to represent the map, the following method can be used. That is, in this case,
For example, in FIG. 13, a mountain 40a having a large number of polygons is arranged in the first virtual three-dimensional space. Then, the mountains 40b and 40c having a small number of polygons are arranged in the second and third virtual three-dimensional spaces. As a result, the number of polygons required to form the sub screen can be reduced.

Further, as shown in FIG. 14, first, second and third map blocks 31, 32 and 33 having different numbers of divisions.
To prepare. Then, the first map block 31 is used for map division of the first virtual three-dimensional space. Then, the second map block 32 or the third map block 33 is used for map division of the second virtual three-dimensional space. In this way, if the map objects are formed so that the number of polygons of the map objects arranged in each block is about the same, the total number of polygons required to form the map is calculated from the first virtual three-dimensional space. Can also be set so that the second virtual three-dimensional space is smaller. As a result, the number of polygons required to form the sub screen can be reduced. The method of using map blocks having different numbers of divisions in this way is particularly effective when most of the maps in the virtual three-dimensional space can be seen by the player, such as in a fighter game and a flight simulator. Is.

In this case, as in the case of the long-distance, medium-distance, and short-distance racing cars described above, in the first virtual three-dimensional space, according to the distance between the player and the division map. Use the first, second and third map blocks properly,
In the second virtual three-dimensional space, it is also possible to adopt a method of properly using the second and third map block numbers according to the distance. In this way, the number of polygons on the main screen as well as the sub screen can be reduced.

The operation for dividing the map into a predetermined number of blocks and arranging the map objects as described above is performed by the map setting unit 110, for example.

4. Description of Image Supply Unit As shown in FIG. 15, the image supply unit 210 includes an object image information storage unit 212, a processing unit 215, and a coordinate conversion unit 2.
18, a clipping processing unit 220, a polygon data conversion unit 224, and a sorting processing unit 226. In addition, the clipping processing unit 220 uses the perspective projection conversion unit 22.
Includes 2.

The image supply section 210 performs various coordinate conversion processing and three-dimensional calculation processing according to the virtual three-dimensional space setting information set by the virtual three-dimensional space calculation section 100.

That is, first, as shown in FIG. 16, objects 300, 33 representing a racing car, a course, etc.
For 3, 334, arithmetic processing for arranging the polygons forming the polygons in a virtual three-dimensional space represented by an absolute coordinate (world coordinate) system (XW, YW, ZW) is performed. Next, for each of these objects, a process of converting the polygons forming the object into a viewpoint coordinate system (Xv, Yv, Zv) based on the viewpoint of the player 302 is performed. After that, so-called clipping processing is performed,
Next, a perspective projection conversion process to the screen coordinate system (XS, YS) is performed. Next, output format conversion is performed, and finally, sorting processing is performed.

Next, details of the operation of the image supply unit 210 will be described.

(1) Initial Setting First, at the time of initial setting, image information of an object representing a racing car, a course, etc. is written in the object image information storage section 212. However, if the object image information storage unit 212 is a ROM, this writing is not necessary.

(2) Transfer of frame data The viewpoint information common to all objects, that is, the viewpoint position / angle / viewing angle information of the player, monitor information, etc.
Updated every 1 field, for example, every (1/60) seconds,
It is transferred from the virtual three-dimensional space calculation unit 100 to the coordinate conversion unit 218 via the processing unit 215. The coordinate conversion unit 218 performs various coordinate conversions based on this data. Further, information such as the angle and size of the monitor is also transferred to the clipping processing unit 220 as data for clipping processing. These transferred data are called frame data.

(3) Formation of Object Data and Polygon Data Display object information including position information, direction information, and object number of the object is displayed in the virtual three-dimensional space computing unit 100.
Is transferred to the processing unit 215.

Next, the image information of the corresponding object is read from the object image information storage section 212 using the object number as an address. That is,
For example, when the object number specifies a racing car, the image information of this racing car is read from the object image information storage unit 212.
In the object image information storage unit 212, image information of a racing car or the like is expressed and stored as a set (polyhedron) of a plurality of polygons. In the processing unit 215, the data format forming unit 217 forms data that is a set of object data and polygon data from the read data, and sequentially transfers the data to the coordinate conversion unit 218 and the subsequent units.

Here, the object data refers to data composed of object position information, rotation information, other attached data, and the like. What is polygon data?
This is image information about polygons that form an object, and is data that is composed of polygon vertex coordinates, vertex texture coordinates, vertex brightness information, and other attached data.

The data format forming section 217 converts these data into data formats as shown in FIGS. 17 (A) and 17 (B).

(4) The motion coordinate conversion unit 218 in the coordinate conversion unit or the like is an object consisting of the viewpoint information of the player transferred from the processing unit 215, the racing car position information transferred from the processing unit 215, and the rotation information. Various coordinate conversions are performed on the polygon data based on the data. That is, the rotation of the polygon data in the local coordinate system, the parallel movement to the world coordinate system, the rotation to the viewpoint coordinate system, and the like are performed.

The clipping processing section 220 performs clipping processing on the polygon data for which the coordinate conversion has been completed. Next, the perspective projection conversion unit 222 in the clipping processing unit 220 performs perspective projection conversion to the screen coordinate system. In this embodiment, the clipping processing and the perspective projection conversion processing are performed using the same hardware.

The polygon data conversion unit 224 performs processing for converting polygon data that has been transformed into a polygon other than a quadrangle by clipping processing into quadrangular polygon data. The converted polygon data is output to the sorting processing unit 226 at the next stage. Specifically, for example, when the polygon is transformed into a triangle by clipping processing, the conversion processing is performed so that the polygon of the triangle becomes a pseudo quadrangular polygon. That is, the vertex number of the original triangular polygon is 1,
In the case of 2, 3, the vertex numbers 1, 2, 3, 1 of the original polygon are assigned to the vertices of the converted quadrilateral polygon. Then, by designating the vertex coordinates, vertex texture coordinates, vertex brightness information, etc. of the original polygon by the assigned vertex numbers, conversion processing into quadrangular polygon data is performed. Further, for example, when the polygon is transformed into a pentagon due to clipping processing, the polygon is a quadrilateral polygon and a pseudo quadrilateral polygon (triangular polygons are regarded as pseudo quadrilateral polygons in the same manner as above. Stuff). Then, for example, the numbers of the vertices of the original pentagonal polygon are 1, 2, 3, 4,
In the case of 5, vertex numbers 1 and 2 of the original polygon are respectively assigned to the vertices of the two divided quadrangular polygons.
Assign 3, 4 and 1, 4, 5, 1. Then, by designating the vertex coordinates, vertex texture coordinates, vertex brightness information, etc. of the original polygon by the assigned vertex number, the conversion processing to the quadrangular polygon data is performed. When the polygon is transformed into a hexagon by the clipping process, it is divided into two quadrilateral polygons and the same process as above is performed.

In the present embodiment, when the image is formed on the rear-view mirror, the polygon data conversion unit 224 is applied to the polygons which are the back side due to the left-right inversion processing of the image.
By this, conversion processing to a table polygon is performed. For example, when the polygons with vertex numbers 1, 2, 3, and 4 are horizontally reversed, the assignment of the vertex numbers to the vertices of the converted polygon is replaced with 1, 4, 3, and 2, and the replaced vertexes are replaced. The vertex coordinates of the original polygon are specified by numbers. As a result, it becomes possible to output the polygon which is the back side by the left-right inversion processing as the front polygon. Further, for example, in the case where the polygon that has become a pentagon by the clipping processing as described above is subjected to the left-right inversion processing, it is divided into a quadrilateral polygon and a pseudo quadrilateral polygon, and the vertex numbers are allocated to these quadrilateral polygons. Are 1, 4, 3, 2 and 1, 5, 4, 1, respectively. As a result, it becomes possible to simultaneously perform the polygon division processing and the conversion of the polygon that is the back side by the left-right reversal into the front polygon.

In the present embodiment, as shown in FIG. 17A, the data format forming section 217 forms main screen data and sub screen data, and these data are stored in one frame. The data to be processed is transferred to the coordinate conversion unit 218 and the like. Here, in the data for the main screen, the data of the objects 1A, 2A, 3A, etc. are arranged in succession starting from the frame data. That is, data relating to all objects to be displayed on the main screen in the frame are linked. Then, for example, after the object data of the object 1A, polygon data of all polygons forming the object is connected. These polygon data have a format as shown in FIG. 17B, for example, and include polygon vertex coordinate information and the like. Similarly, after the object data of the object 2A, the polygon data of all the polygons forming the object is linked.

The data for the sub screen has the same data format as the data for the main screen. However, the object 1A and the object 1B have the same arrangement position and direction of the object, but have different numbers of polygon data connected to the object data. The difference between the object 2A and the object 2B is the same. In this embodiment, the data format forming unit 217 forms the data in such a format, so that the number of polygons of the object displayed on the main screen and the number of polygons on the sub screen can be made different. Furthermore, the viewpoint position, the viewpoint direction, and the like can be made different between the main screen data and the sub screen data. For this purpose, the contents of the frame data placed at the beginning of the main screen data and the sub screen data may be different. For example, in the frame data of the main screen data, the line-of-sight direction is set to face forward, and in the frame data of the sub-screen data, the line-of-sight direction is set to face backward. It is possible to form a rearview mirror on top. However, in this case, although it is necessary to display the image by horizontally reversing it, this horizontal reversing process is performed in the polygon data conversion unit 224 in the present embodiment as described above.

5. Description of Image Forming Unit The image forming unit 228 calculates image information inside the polygon based on the vertex image information given to each vertex of the polygon, and outputs this to the CRT 10.
As shown in FIG. 18, a processor unit (texture calculation means) 230, a texture information storage unit 242, a palette &
And a mixer circuit 244.

In the present embodiment, image synthesis is performed by a technique called a texture mapping technique and a Gouraud shading technique in order to synthesize a higher quality image more efficiently. The concept of these methods will be briefly described below.

FIG. 19 shows the concept of the texture mapping method.

When an object 332 as shown in FIG. 19 is image-synthesized on each surface with, for example, a grid pattern or a striped pattern, conventionally, the object is a polygon.
(1) ~ (80) (Polygons (41) ~ (80) are not shown)
Image processing was performed on all of these polygons. The reason is that in the conventional image synthesizing device,
This is because the color of each polygon can be filled with only one designated color. As a result, when synthesizing a high-quality image with a complicated pattern or the like, the number of polygons greatly increases, and thus it is practically impossible to synthesize such a high-quality image. It was possible.

Therefore, in this embodiment, the object 33
Polygons A, B, and C forming each surface are subjected to processing such as rotation, translation of 2 and coordinate conversion such as perspective projection conversion and clipping.
This is performed for each (specifically, for each vertex of each polygon), and the grid-like and striped patterns are treated as textures and divided into polygons and processed. That is, as shown in FIG. 18, a texture information storage unit 242 is provided in the image forming unit 228, in which texture information to be attached to each three-dimensional polygon, that is, an image of a grid pattern, a striped pattern, or the like. Information is stored.

The addresses of the texture information storage section 242 for designating this texture information are given as the vertex texture coordinates VTX and VTY of each three-dimensional polygon. Specifically, as shown in FIG. 19, for each vertex of the polygon A, (VTX0, VTY0), (VTX1, VT
Y1), (VTX2, VTY2), and (VTX3, VTY3) vertex texture coordinates are set.

The processor section 230 in the image forming section 228
Then, from the vertex texture coordinates VTX, VTY, the texture coordinates TX for all the dots in the polygon,
TY is required. Then, according to the obtained texture coordinates TX and TY, the corresponding texture information is read from the texture information storage unit 242 and output to the palette & mixer circuit 244. As a result, it becomes possible to perform image composition of a three-dimensional object having a texture such as a lattice or stripe as shown in FIG.

Further, in this embodiment, the object 332 is expressed as a mass of polygons as described above.
Therefore, the continuity of the brightness information at the boundary of each three polygons becomes a problem. For example, when trying to represent a sphere using multiple polygons, if all the dots in the polygon are all set to the same brightness, you actually want to represent "roundness," but
There occurs a situation where the boundary of each polygon is not expressed as "roundness". Therefore, in this embodiment, this is avoided by a method called Gouraud shading. In this method, similar to the texture mapping method described above, 3
The vertex luminance information VBRI0 to VBRI3 is given to each vertex of the three-dimensional polygon as shown in FIG.
When the image is finally displayed in 8, the vertex brightness information VB
From RI0 to VBRI3, the brightness information about all the dots in the three-dimensional polygon is obtained by interpolation.

Now, in FIGS. 20A to 20K, the textures are
Visually shows the flow of arithmetic processing for char mapping
Has been done. As described above, the image forming unit 228
Based on the vertex image information of the polygon,
Arithmetic processing is performed to form all image information. This place
If the texture information to be attached to the polygon is
This texture is stored in the posture information storage unit 342.
Texture coordinates TX and TY are
Will be needed. 20 (F), (G), (H),
(I) shows all perspective transformation textures in the polygon.
Standard TX^*, TY^*The state of the arithmetic processing for obtaining
ing. 20 (B), (C), (D), (E)
Is the perspective transformation that is the coordinates at which the texture information should be displayed.
Display coordinate X ^*, Y^*A visual representation of the calculation process for calculating
Has been done. The above calculation is performed by the processor unit 230.
Be seen. Then, as shown in FIG.
Perspective transformation texture coordinate TX^*, TY^*Is the texture coordinate
Inverse perspective projection conversion into TX and TY, and this inverse perspective projection conversion
The texture information is recorded by the texture coordinates TX and TY
The texture information is read from the storage unit 242. last
Then, as shown in FIG.^*, Y^*of
Associate the read texture information with the coordinate position
As a result, image composition is performed.

FIGS. 21A and 21B visually show a state in which texture mapping is applied to an object of a racing car. The texture information storage unit 242 stores texture information 902 as shown in FIG.
916 is stored, and by mapping these to a racing car object, it is possible to express a realistic racing car as shown in FIG. 21 (B).

In FIG. 22, the texture information storage unit 242 is shown.
An example of a texture storage plane constructed by As shown in FIG. 22, the texturing to the polygon is performed by designating the texture coordinates TX and TY of the texture to be mapped to the polygon.

In the present embodiment, texture mapping is performed not only on the display object on the main screen but also on the display object on the sub screen. For example, in FIG. 4, not only the road surface 21 reflected on the main screen 1 but also the road surface 23 reflected on the rearview mirror (sub screen) 2 is provided with an asphalt-like pattern and a texture composed of a center line 26. This enhances the realism of the image displayed on the sub screen. Then, in this case, in the present embodiment, the texture information storage unit includes the display object in the first virtual three-dimensional space and the display object arranged in the second virtual three-dimensional space at the same position and in the same direction as the display object. The texture information stored in 242 is commonly used.

For example, in FIG. 23A, the first virtual 3
An example of a map object arranged in a dimensional space is shown. This map object has polygons a1 to a5, b1, b2, c1, c2, d1 to d as shown in FIG.
It is composed of 3. On the other hand, FIG. 23 (B) shows an example of the map object arranged in the second virtual three-dimensional space. This map object is a simplified representation of the map object shown in FIG. 23 (A), and is composed of polygons a, b, c, d. These map objects are arranged at the same position and in the same direction in each virtual three-dimensional space. FIG. 23
(C) shows an example of texture information to be attached to these map objects and a texture plane in which this texture information is stored. This texture information is composed of an asphalt pattern and a center line.

When this texture is mapped to the map object shown in FIG. 23A, the following is done. For example, a polygon a1 having vertices A, B, K and L
Consider the case where texture mapping is performed on. In this case, the vertex texture coordinates of the polygon a1 are set as shown in FIG.
3 (C) (VTXA, VTYA), (VTXB, VTY
B), (VTXK, VTYK), (VTXL, VTYL) are given. Then, the processor unit 230 causes the processor unit 230 shown in FIG.
The texture coordinates TX and TY at all the dots (pixels) in the polygon a1 are obtained by the processing shown in (K) to (K). Then, the texture information is read from the texture information storage unit 242 with the obtained TX and TY, and the texture mapping for the polygon a1 is completed. Texture mapping for the polygons a2, a3, a4, a5 can be performed in the same manner.

On the other hand, texture mapping is performed on the simplified map object shown in FIG. 23B in the following manner in this embodiment. For example, consider the case where texture mapping is performed on a polygon a having vertices A ′, F ′, G ′, and L ′. In this case, the vertex texture coordinates of polygon a are (VTXA, VTYA), (VTXF, VTYF), (VTX) shown in FIG.
G, VTYG) and (VTXL, VTYL) are given. That is, the same vertex texture coordinates as the vertex texture coordinates given to points A, F, G, and L in FIG. Then, by the processing of the processor unit 230, the texture coordinates TX for all the dots in the polygon a1,
TY is obtained. Then, by reading the texture information from the texture information storage unit 242 using the obtained TX and TY, the texture mapping for the polygon a is completed.

As described above, in this embodiment, the texture information is shared between the precise object and the corresponding simplified object. Then, only the vertex texture coordinates are given to each polygon, and the texture coordinates at the dots in the polygon are obtained by the interpolation processing shown in FIGS.
Therefore, even if the texture information is shared and used as described above, it is possible to similarly map the texture shown in FIG. 23C to the map object shown in FIGS. 23A and 23B. Is possible. By sharing and using the texture information in this way, it is not necessary to provide two types of the texture information storage unit 242 for the precise object and the simplified object. Therefore, it is necessary for the texture information storage unit 242. The storage capacity can be reduced, and the hardware can be downsized.

The vertex texture coordinates given to the polygon are stored in the object image information storage section 212 as part of the image information (see FIG. 17B).
Therefore, the vertices A ′, F ′ of the polygon a in FIG.
With respect to G ′ and L ′, the vertices A, F, G, in FIG.
The vertex texture coordinates common to L are given and stored in the image information storage unit 212. Further, in this embodiment, the vertex luminance information VBRI is also A ′, F ′, G ′,
It is commonly given to L ′ and A, F, G, and L. As a result, the brightness calculation by the Gouraud shading method is similarly performed for the polygon a and the polygons a1 to a5.

The present invention is not limited to the above embodiment, and various modifications can be made within the scope of the gist of the present invention.

For example, although the present embodiment has been described by taking a racing car game as an example, the present invention is not limited to this and can be applied to all kinds of three-dimensional games. For example, a spaceship game in which a three-dimensional map is formed. Etc. can also be applied.

Further, the present invention can be applied not only to a three-dimensional game for business use but also to, for example, a home-use game machine, a flight simulator, a driving simulator used in a school and the like.

Further, the calculation processing in the virtual three-dimensional space calculation section or the like can be processed by a dedicated image processing device, or can be processed by using a microcomputer or the like.

Further, the arithmetic processing performed by the image synthesizing unit or the like is not limited to that described in the present embodiment, and the texture mapping method is not limited to that described above.

The sub-screen in the present invention can be applied not only to the rearview mirror described in this embodiment but also to various other ones. For example, it can be applied to a side mirror. Further, for example, in the future tank game shown in FIG. 24, the sub-screen 801 has a future tank 820 operated by the player.
The image seen from above is displayed. Also, the sub screen 80
1, the missile 898 fired by the future tank 820, for example.
You may project the image seen from the camera attached to the tip of the.

Further, in the present invention, the number of polygons of the display object displayed on the sub-screen is set to be small to simplify the expression, but conversely, the number of polygons of the display object displayed on the sub-screen is set to be large. It is also possible to express precisely. By doing so, it becomes possible to display, for example, a sub-screen such as a magnifying glass on the main screen in which an object can be magnified and viewed.

Further, the pseudo 3 image-synthesized by the present invention is used.
The three-dimensional image can be naturally displayed not only on a display such as the CRT 10 but also on a display called a head mounted display (HMD).

[Brief description of drawings]

FIG. 1 is a block diagram showing an example of an embodiment according to the present invention.

FIG. 2 is a schematic diagram showing an example of an external appearance of the present three-dimensional simulator device.

FIG. 3 is a schematic diagram showing an example of a virtual three-dimensional space.

FIG. 4 is a schematic diagram showing a game screen (pseudo three-dimensional image) image-synthesized by the present three-dimensional simulator device.

FIG. 5 is a block diagram showing an example of a virtual three-dimensional space calculation unit.

FIG. 6 is a schematic explanatory diagram for explaining display object information stored in a display object information storage unit.

FIG. 7 is a schematic explanatory diagram for explaining display object information set in an object.

8A and 8B are schematic explanatory diagrams for explaining a plurality of pieces of display object information having the same position information and direction information but different object numbers.

FIG. 9 is a diagram showing a plurality of types of racing car objects having different polygon numbers.

FIG. 10 is a diagram showing an example of a course object composed of a large number of polygons.

FIG. 11 is a diagram showing an example of a course object configured with a small number of polygons.

FIG. 12 is a diagram showing a map divided into a plurality of map blocks.

FIG. 13 is a diagram showing an outline of a map object arranged in a map block.

FIG. 14 is a diagram showing a plurality of types of map blocks having different numbers of divisions.

FIG. 15 is a block diagram illustrating an example of an image supply unit.

FIG. 16 is a schematic explanatory diagram for explaining the three-dimensional arithmetic processing in this embodiment.

17A and 17B are diagrams showing an example of a data format formed by a data format forming unit.

FIG. 18 is a block diagram illustrating an example of an image combining unit.

FIG. 19 is a schematic explanatory diagram for explaining a texture mapping method.

20A to 20K are diagrams visually showing a texture mapping method in the present embodiment.

21 (A) and 21 (B) are diagrams visually showing a texture-mapped object of a racing car.

FIG. 22 is a diagram showing an example of a texture storage plane configured by a texture information storage unit.

23A and 23B are diagrams showing an example of map objects arranged in first and second virtual three-dimensional spaces, and FIG. 23C is a diagram showing these map objects. It is a figure which shows an example of the texture plane which stores this texture information and the texture information which maps to.

FIG. 24 is a schematic explanatory diagram for explaining another application example of the sub-screen.

FIG. 25 (A) is a schematic explanatory diagram for explaining the concept of the three-dimensional simulator device, and FIG.
FIG. 6 is a diagram showing an example of a screen formed by this three-dimensional simulator device.

[Explanation of symbols]

10 CRT 12 Operation part 100 Virtual three-dimensional space operation unit 102 processing unit 200 Image synthesizer 210 Image Supply Unit 212 Object Image Information Storage Unit 215 Processor 217 Data format formation unit 218 Coordinate conversion unit 220 Clipping processing unit 222 Perspective transformation unit 224 Polygon data converter 226 Sorting processing unit 228 Image forming unit 230 processor 242 Texture information storage unit 244 Pallet & Mixer Circuit

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Claims (2)

(57) [Claims] 1. A virtual three-dimensional space calculating means for performing a calculation operation for forming a virtual three-dimensional space by setting positions or positions and directions of a plurality of display objects forming the virtual three-dimensional space, and polygons forming the display object. Texture calculation means for performing a calculation for applying a texture to the texture, a texture information storage means for storing texture information applied in the texture calculation means, and a calculation result from the virtual three-dimensional space calculation means An image synthesizing unit for synthesizing a view image from an arbitrary viewpoint in the virtual three-dimensional space, wherein the virtual three-dimensional space computing unit has the same position or the same position and direction as the display object.
Multiple virtual three-dimensional images with different numbers of polygons
The texture calculation means performs a calculation for forming a space, and the texture calculation means calculates a position or a position in the different virtual three-dimensional space.
And the same direction for all or part of the display object
The texture information stored in the texture information storage means
A three-dimensional spot characterized by including means commonly used
Generator device. 2. A virtual 3-dimensional space is calculated by the virtual 3- dimensional space computing means.
The formation operation of the virtual three-dimensional space is performed by setting the position or the position and the direction of a plurality of display objects forming the three-dimensional space.
There, the texture operation means, we have row calculation for performing texture against polygons forming the display object, the texture information storing means stores the information of the texture to be applied in the texture operation means, image synthesizing means by the addition to synthesizing the view field image from an arbitrary viewpoint in the virtual three-dimensional space according to the result from the virtual three-dimensional space calculating means, by the virtual three-dimensional space calculating means, the position of the display object
Or the position and direction are the same and
Performance to form multiple virtual three-dimensional spaces with different numbers of ligons
And the different textures are calculated by the texture calculation means.
The table with the same position or position and direction in space
The texture information storage hand for a part or all of the show
Common use of texture information stored in columns
An image synthesizing method of a characteristic three-dimensional simulator device.