JP4088169B2 - Image generating apparatus and information storage medium - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an image generation apparatus and an information storage medium that generate an image at a given viewpoint in an object space.
[0002]
[Background Art and Problems to be Solved by the Invention]
Conventionally, there has been known an image generating apparatus that arranges a plurality of objects in an object space, which is a virtual three-dimensional space, and generates an image that can be seen from a given viewpoint, and is popular as a so-called virtual reality experience. Is expensive.
[0003]
Taking an example of an image generation device that can enjoy a driving game, a player enjoys the game by running a moving body such as a car that the player operates on a map. In such a game, the real feeling and the fun are strongly dependent on the shape of the map on which the course is arranged. Therefore, it is desirable to prepare and display a complex and varied map so that the realism and fun of the game can be enhanced.
[0004]
In particular, when the moving body operated by the player travels uphill or downhill, it is important to give the player the feeling of actually traveling uphill or downhill. .
[0005]
On the other hand, even for a map that can enhance the player's realism, if the storage capacity required to store the map data increases, the cost of the image generation apparatus increases.
[0006]
The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an image generation apparatus and an information storage medium capable of displaying a realistic map with a small storage capacity. It is in.
[0007]
[Means for Solving the Problems]
In order to solve the above problems, the present invention is an image generation apparatus that generates an image at a given viewpoint in an object space, and stores data of map objects constituting a map of the object space; Means for performing processing for transforming a given map object in which data is stored by oblique coordinate transformation from an orthogonal coordinate system to an oblique coordinate system, and obtained from the given map object by the transformation; An image including images of a plurality of map objects, and means for generating an image at a given viewpoint in the object space.
[0008]
According to the present invention, a given map object stored in the storage means is transformed by oblique coordinate transformation. An image including a plurality of map objects obtained by this deformation is generated. Therefore, according to the present invention, it is possible to display a plurality of map objects deformed by oblique coordinate transformation only by storing data of one map object in the storage means. As a result, a realistic image can be generated with a small storage capacity. It is also possible to reduce the burden of map design and shorten the development period required for map design.
[0009]
According to the present invention, the map object is deformed so that the angle formed by the coordinate axis of the orthogonal coordinate system and the oblique axis of the oblique coordinate system changes according to the inclination angle of the area where the map object is arranged. It is characterized by that. In this way, an optimal map object corresponding to the inclination angle can be arranged in each area.
[0010]
Further, the present invention is characterized in that the map object is deformed so that a given part constituting the map object is oriented in the vertical direction. In this way, for example, it is possible to make the player feel whether it is going downhill or uphill, and the virtual reality of the player can be improved.
[0011]
Further, the present invention is characterized in that the map object is deformed so that the map object is scaled in a direction along at least one oblique axis of the oblique coordinate system. By doing so, it is possible to further increase the variety of deformation of the map object.
[0012]
According to the present invention, the map object is deformed so that the map object is scaled in a direction along at least one oblique axis of the oblique coordinate system according to a length of an area in which the map object is arranged. It is characterized by. In this way, an optimal map object corresponding to the length can be arranged in each area.
[0013]
Further, the present invention is characterized in that the map object is an object for dividing a course on the map. By deforming such an object that divides the course, it is possible to make the player feel more clearly the feeling of traveling downhill or uphill.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In the following, a case where the present invention is applied to a bicycle game will be described as an example. However, the present invention is not limited to this.
[0015]
FIG. 1 shows an example of an external view when the image generation apparatus of the present embodiment is applied to a business game apparatus.
[0016]
Here, the riding case 16 is made by imitating an actual bicycle, and a player (not shown) sits on the saddle 17 of the riding case 16. The display 18 displays a moving body 20 (including a bicycle that is a riding body and a character riding on the bicycle), a course on which the moving body 20 runs, and surrounding scenery. The player determines the advancing direction of the moving body 20 displayed on the display 18 by operating the handle 32 left and right while viewing this image. Moreover, the moving body 20 is advanced in the course traveling direction by pedaling the pedal 30 as indicated by A1.
[0017]
FIG. 2 shows an example of a functional block diagram of the image generation apparatus of the present embodiment.
[0018]
Here, the operation unit 10 is for the player to input operation data by operating the handle 32 of FIG. 1 or by stroking the pedal 30, and the operation data obtained by the operation unit 10 is processed by the processing unit 100. Is input.
[0019]
The processing unit 100 performs processing for arranging a display object in the object space and processing for generating an image at a given viewpoint in the object space based on the operation data and a given program. The function of the processing unit 100 can be realized by hardware such as a CPU (CISC type, RISC type), DSP, custom (gate array, etc.) IC or the like.
[0020]
The information storage medium 190 stores programs and data. The function of the information storage medium 190 can be realized by hardware such as a CD-ROM, game cassette, IC card, MO, FD, DVD, hard disk, and memory. The processing unit 100 performs various processes based on the program and data from the information storage medium 190.
[0021]
The processing unit 100 includes a game calculation unit 110, an object data storage unit 120, and an image generation unit 150.
[0022]
Here, the game calculation unit 110 performs a game mode setting process, a game progress process, a process for determining the position and direction of a moving object, a process for determining a viewpoint position and a line-of-sight direction, a process for placing an object in the object space, and the like.
[0023]
The object data storage unit 120 stores data of various objects such as moving objects and map objects arranged in the object space (vertex position data of polygons (primitive surfaces) constituting the object, texture data, object numbers, etc.). It is something to remember. This object data is stored in the information storage medium 190 in the initial state, and is transferred from the information storage medium 190 to the object data storage unit 120 after the power is turned on.
[0024]
The image generation unit 150 performs processing for generating an image at a given viewpoint in the object space set by the game calculation unit 110. The image generated by the image generation unit 150 is displayed on the display unit 12.
[0025]
The game calculation unit 110 includes a moving object calculation unit 112 and an object deformation unit 116.
[0026]
Here, the moving object calculation unit 112 selects a moving object operated by the player or a moving object whose movement is controlled by a given control program (computer) based on operation data input from the operation unit 10 or a given program. Then, an operation for moving the object in the object space is performed. More specifically, a calculation for obtaining the position and direction of the moving body every frame (1/60 second) is performed.
[0027]
For example, assume that the position of the moving body in the (k-1) frame is PMk-1, the speed is VMk-1, the acceleration is AMk-1, and the time of one frame is Δt. Then, the position PMk and the speed VMk of the moving body in k frames are obtained, for example, by the following equations (1) and (2).
PMk = PMk-1 + VMk-1 * .DELTA.t (1)
VMk = VMk-1 + AMk-1 * .DELTA.t (2)
The object transformation unit 116 transforms one object by oblique coordinate conversion from an orthogonal coordinate system to an oblique coordinate system based on data of a given object stored in the object data storage unit 120. Perform the process.
[0028]
In the three-dimensional game, a map 38 as shown in FIG. 3A is provided in the object space. This map 38 is composed of a plurality of map objects to express the course 40, the tunnel 42, the plateau 44, the mountain 46, and the like. These map objects are composed of a plurality of primitive surfaces such as polygons and curved surfaces. In order to enhance the real feeling and quality of the image output from the image generating apparatus, it is desirable to make the shape of the map 38 more complex and rich in change. For example, the player enjoys the game by running the moving body 20 such as a bicycle on the course 40 in the object space with given operation means. Therefore, for example, by giving a difference in elevation to the course 40, it is possible to give the player a feeling that the bicycle is actually running and to improve virtual reality.
[0029]
FIG. 3B shows map objects 50-1 to 50-6 used to delimit the course 40 as an example of map objects constituting the map 38. By arranging such map objects 50-1 to 50-6 on both sides of the course 40, the moving body 20 can be prevented from going out of the course. In addition, the player can recognize the shape of the course 40.
[0030]
In a three-dimensional game, as described above, the course 40 generally has a height difference and is rich in undulations in order to improve virtual reality. Therefore, the map object 50 is arranged on a flat ground as indicated by B1 in FIG. 4, or is arranged on a downhill as indicated by B2. When the map object 50 is arranged on the downhill as in B2, the map object 50 is coordinate-transformed with a rotation matrix corresponding to the inclination angle θ of the downhill. Then, the player sees an image from the viewpoint 60 that follows the moving body 20 (or coincides with the position of the moving body 20).
[0031]
However, when the map object 50 is arranged as shown in B2 of FIG. 4, it is not possible to sufficiently convey to the player the feeling that the vehicle is traveling downhill. In other words, the player generally determines whether it is a downhill or an uphill by sensing the relative relationship between the player facing the vertical direction or the one facing the horizontal direction. However, when the map object 50 is arranged as shown in B2 of FIG. 4, the parts (supports) 52 of the map object 50 that are oriented in the vertical direction on the flat ground are not oriented in the vertical direction. In other words, the part 50 is oriented in a direction perpendicular to itself (course 40) both on the flat ground and on the downhill, so that the player cannot determine whether the vehicle is traveling on the flat ground or on the downhill. . As a result, the feeling of traveling downhill is impaired, and the virtual reality felt by the player is reduced.
[0032]
Therefore, in this embodiment, as shown by C2 and C3 in FIG. 5, the map object 50 is deformed by oblique coordinate conversion from the orthogonal coordinate system to the oblique coordinate system and arranged on the course 40. In this way, the parts (supports) 52 of the map object 50 can always be directed in the vertical direction regardless of the slope angle θ of the slope. In other words, the angle at which the part 52 faces the course 40 changes according to the slope inclination angle θ, so that the player can determine whether the vehicle is traveling on a flat ground or a downhill. become. As a result, it is possible to give the player a feeling that the vehicle is traveling downhill, and the virtual reality felt by the player can be greatly improved.
[0033]
The principle of oblique coordinate transformation will be described with reference to FIG. FIG. 6 shows an example of a two-dimensional case for the sake of simplicity. The oblique coordinate transformation means performing coordinate transformation from the orthogonal coordinate system X, Y to the oblique coordinate system X ′, Y ′, and this coordinate transformation can be expressed by a matrix as shown by E1 in FIG. it can. That is, coordinate conversion as shown in the following expression (3) is performed by this oblique coordinate conversion.
X ′ = D _X X
Y ′ = D _Y X + Y (3)
Here _D X, referred to as oblique coordinate transformation parameter _{D Y.} In the case of D _X = 1.0, X ′ and X are equal. On the other hand, for example, when D _Y = 0.6, Y ′ increases by 0.6 relative to Y as X increases by 1, and Y ′ increases by 0.6 relative to Y as X decreases by 1. Will be reduced. By this conversion, the rectangle 64 can be converted into a parallelogram 66.
[0034]
In the present embodiment, as shown in FIG. 5, the coordinate axis X of the orthogonal coordinate system and the oblique axis X ′ of the oblique coordinate system according to the inclination angle θ of the course 40 (area where the map object is arranged) Is changed (see FIG. 6). That is, the angle α is increased as the inclination angle θ increases, for example, from θ1 to θ2. In this way, the part 52 of the map object 50 can be always directed in the vertical direction.
[0035]
Note the size of the angle α can be controlled by varying the D _Y of oblique coordinate transformation parameters. That may be increased to D _Y if you want to increase the angle alpha, when it is desired to reduce the angle alpha may be reduced D _Y. For example in the case of arranging the map object 50 to the flat D _{Y =} 0.0 Tosureba well, may be increased D _Y as the inclination angle θ increases.
[0036]
7A and 7B show examples of game images generated by this embodiment. The player operates the moving body 20 using the operation unit 10 shown in FIG. 2, and competes with the moving body controlled by the control program and the moving body operated by another player. In this embodiment, a delimiter map object 50 for delimiting the course 40 is arranged on the course 40. The parts 52 of the map object 50 can be used both when the map object 50 is arranged on a flat ground as shown in FIG. 7A and when the map object 50 is arranged downhill as shown in FIG. Always oriented vertically. Therefore, the presence of the map object 50 allows the player to feel whether he is traveling on a flat ground or traveling downhill (or uphill). This can greatly improve the player's virtual reality.
[0037]
As another method for expressing an image as shown in FIGS. 7A and 7B, the map object 50 having the shape shown in FIG. 7A and the map object 50 having the shape shown in FIG. A method prepared in advance can be considered. That is, this is a method of storing all the map object data having different shapes in the object data storage unit 120.
[0038]
However, according to this method, it is necessary to store data of a large number of map objects corresponding to the inclination angle in the object data storage unit 120. Therefore, the storage capacity of the object data storage unit 120 is increased, and the cost of the image generation apparatus is increased.
[0039]
On the other hand, according to the present embodiment, a plurality of map objects required according to the inclination angle are obtained by transforming, for example, a map object described in an orthogonal coordinate system by oblique coordinate transformation. Accordingly, the object data storage unit 120 only needs to store one map object described in, for example, an orthogonal coordinate system. As a result, an increase in the storage capacity of the object data storage unit 120 can be prevented, and the cost of the image generation apparatus can be reduced.
[0040]
The present embodiment also has a feature that the map object is deformed so that the map object is scaled in a direction along at least one oblique axis of the oblique coordinate system.
[0041]
For example, as shown in FIG. 8A, the course 40 is composed of a plurality of polygons (primitive surfaces) 70-1 to 70-5. The length of the polygon differs depending on the location. For example, the length of the polygon 70-2 is L1, and the length of the polygon 70-4 is L2 (> L1). When map objects are arranged on polygons having different lengths in this way, if a map object having a different shape according to the length is prepared in advance, the storage capacity of the object data storage unit 120 increases. .
[0042]
Therefore, in this embodiment, as shown by F1 and F2 in FIG. 8A, the lengths L1 and L2 of the polygons 70-2 and 70-4 (the length of the area where the map object is arranged) are slanted. The map object 50 is deformed so that the map object is scaled in a direction along at least one oblique axis of the cross coordinate system. That is, as shown by F3 and F4 in FIG. 8B, for example, the map object 50 is deformed by scaling in the direction along the oblique axis X ′. By doing so, the map object to be arranged on the polygon 70-2 and the map object to be arranged on the polygon 70-4 can be obtained by transforming one map object. Thereby, an increase in the storage capacity of the object data storage unit 120 can be prevented.
[0043]
Note scaling in the direction of the oblique transverse X 'may be realized by controlling the oblique coordinate transformation parameter D _X of matrix shown in F5. For example, when D _X = 1.0, X ′ = X and the scaling rate is 1. On the other hand, if D _X = 2.0, X ′ = 2.0X, and scaling (enlargement) of 2.0 times is possible in the direction along the oblique axis X ′, and D _X = 0.5. For example, X ′ = 0.5X, and scaling (reduction) of 0.5 times is possible in the direction along the oblique axis X ′.
[0044]
According to this embodiment as described above, it oblique coordinate transformation parameter D _X, by deforming the map object by controlling the D _Y, the area for arranging the map object tilt angles and various corresponding to the length of It becomes possible to display a map object having a shape. As a result, it is possible to provide a realistic image that gives the player the feeling of traveling downhill or uphill while preventing the storage capacity of the object data storage unit 120 from increasing.
[0045]
Next, a detailed processing example of this embodiment will be described with reference to the flowchart of FIG.
[0046]
When displaying a map object, the object deforming unit 116 in FIG. 2 first reads out an object display parameter (step S1). FIG. 10 shows an example of the object display parameter. The display position P designates a position (world coordinate system) for displaying the map object. The rotation matrix creation parameter is a parameter for creating a rotation matrix for rotating the map object. Oblique coordinate transformation parameters D _X, D _Y, as described above, and an angle between the oblique transverse axes and oblique coordinate system of the orthogonal coordinate system, with parameters that control the scaling rate on the oblique transverse is there. The display object number N is for specifying a map object. By using this display object number N, the object data to be used can be specified from the object data stored in the object data storage unit 120. The oblique coordinate conversion flag is a flag for designating whether or not the object is to be displayed by performing oblique coordinate conversion.
[0047]
Next, a rotation matrix R is created based on the rotation matrix creation parameters in the object display parameters read out in step S1 (step S2).
[0048]
Next, based on the oblique coordinate conversion flag in the object display parameter, it is determined whether or not the map object is displayed by performing oblique coordinate conversion (step S3).
[0049]
If it is determined in step S3 that the map object is to be displayed without performing oblique coordinate conversion, a process of displaying the map object based on the rotation matrix R, the display position P, and the display object number N is performed (step S4). . More specifically, based on the display object number N, the corresponding map object data is read from the object data storage unit 120. Then, the image generation unit 150 performs coordinate conversion for rotating the map object based on the read map object data and the rotation matrix R. Then, the rotated map object is displayed at the position specified by the display position P.
[0050]
If it is determined in step S3 that the map object is to be displayed after performing oblique coordinate transformation, an oblique coordinate transformation matrix D is created based on the oblique coordinate transformation parameters D _X and D _Y included in the object display parameters. (Step S5). By using this oblique coordinate transformation matrix D, coordinate transformation from the orthogonal coordinate system X, Y, Z to the oblique coordinate system X ′, Y ′, Z ′ as shown in the following equation (4) becomes possible. .
X ′ = D _X X
Y ′ = D _Y X + Y
Z '= Z (4)
The above equation (4) is obtained by extending the above equation (3) to three dimensions.
[0051]
Next, a new matrix T is obtained by multiplying the rotation matrix R obtained in step S2 and the oblique coordinate transformation matrix D obtained in step S5 (step S6).
[0052]
Next, a process of displaying a map object based on the rotation matrix T, the display position P, and the display object number N is performed (step S7). More specifically, based on the display object number N, the corresponding map object data is read from the object data storage unit 120. Based on the read map object data and the rotation matrix T, the image generation unit 150 rotates the map object and performs coordinate conversion for oblique coordinate conversion. Then, the map object that has been rotated and subjected to oblique coordinate conversion is displayed at a position specified by the display position P.
[0053]
As described above, it is possible to arrange various deformed map objects for each area in the object space having various inclination angles and lengths. In addition, the object data storage unit 120 only needs to store data of one map object before deformation.
[0054]
Next, an example of a hardware configuration capable of realizing the present embodiment will be described with reference to FIG. In the apparatus shown in the figure, a CPU 1000, a ROM 1002, a RAM 1004, an information storage medium 1006, a sound generation IC 1008, an image generation IC 1010, and I / O ports 1012, 1014 are connected to each other via a system bus 1016 so that data can be transmitted and received. A display 1018 is connected to the image generation IC 1010, a speaker 1020 is connected to the sound generation IC 1008, a control device 1022 is connected to the I / O port 1012, and a communication device 1024 is connected to the I / O port 1014. Has been.
[0055]
The information storage medium 1006 mainly stores programs, image data for expressing display objects, sound data, and the like. For example, a consumer game device uses a CD-ROM, game cassette, DVD, or the like as an information storage medium for storing a game program or the like. The arcade game machine uses a memory such as a ROM. In this case, the information storage medium 1006 is a ROM 1002.
[0056]
The control device 1022 corresponds to a game controller, an operation panel, and the like, and is a device for inputting a result of a determination made by the player in accordance with the progress of the game to the device main body.
[0057]
In accordance with a program stored in the information storage medium 1006, a system program stored in the ROM 1002 (such as device initialization information), a signal input by the control device 1022, the CPU 1000 controls the entire device and performs various data processing. . The RAM 1004 is a storage means used as a work area of the CPU 1000 and stores the given contents of the information storage medium 1006 and the ROM 1002 or the calculation result of the CPU 1000. In addition, a data structure (for example, data structure of object data and object display parameters) having a logical configuration for realizing the present embodiment is constructed on this RAM or information storage medium.
[0058]
Further, this type of apparatus is provided with a sound generation IC 1008 and an image generation IC 1010 so that game sounds and game images can be suitably output. The sound generation IC 1008 is an integrated circuit that generates game sounds such as sound effects and background music based on information stored in the information storage medium 1006 and the ROM 1002, and the generated game sounds are output by the speaker 1020. The image generation IC 1010 is an integrated circuit that generates pixel information to be output to the display 1018 based on image information sent from the RAM 1004, the ROM 1002, the information storage medium 1006, and the like. As the display 1018, a so-called head mounted display (HMD) can be used.
[0059]
The communication device 1024 exchanges various types of information used inside the game device with the outside. The communication device 1024 is connected to other game devices to send and receive given information according to the game program, and to connect a communication line. It is used for sending and receiving information such as game programs.
[0060]
The various processes described in FIGS. 1 to 8 and 10 include an information storage medium 1006 that stores a program for performing the process shown in the flowchart of FIG. 9, a CPU 1000 that operates according to the program, an image generation IC 1010, a sound This is realized by the generation IC 1008 or the like. The processing performed by the image generation IC 1010, the sound generation IC 1008, and the like may be performed by software using the CPU 1000 or a general-purpose DSP.
[0061]
FIG. 1 described above shows an example in which the present embodiment is applied to an arcade game machine. In this case, a CPU, an image generation IC, a sound generation IC, and the like are mounted on a system board 1106 built in the apparatus. Then, the information for storing the data of the map object constituting the map of the object space and the given map object storing the data are transformed by the oblique coordinate conversion from the orthogonal coordinate system to the oblique coordinate system. Information for performing processing for the image, information including images of a plurality of map objects obtained from a given map object by deformation, and information for generating an image at a given viewpoint in the object space Are stored in a memory 1108 which is an information storage medium on the system board 1106. Hereinafter, these pieces of information are referred to as stored information. The stored information includes at least one of program code, image information, sound information, display object shape information, table data, list data, player information, and the like for performing the various processes described above.
[0062]
FIG. 12A shows an example in which the present embodiment is applied to a home game device. The player enjoys the game by operating the game controllers 1202 and 1204 while viewing the game image displayed on the display 1200. In this case, the stored information is stored in a CD-ROM 1206, IC cards 1208, 1209, etc., which are information storage media detachable from the main unit.
[0063]
FIG. 12B shows an example in which the present embodiment is applied to a game device including a host device 1300 and terminals 1304-1 to 1304-n connected to the host device 1300 via a communication line 1302. Show. In this case, the stored information is stored in an information storage medium 1306 such as a magnetic disk device, a magnetic tape device, or a memory that can be controlled by the host device 1300, for example. When the terminals 1304-1 to 1304-n have a CPU, an image generation IC, and a sound generation IC and can generate a game image and a game sound stand-alone, the host device 1300 receives a game image and a game A game program or the like for generating sound is delivered to the terminals 1304-1 to 1304-n. On the other hand, if it cannot be generated stand-alone, the host device 1300 generates a game image and a game sound, which is transmitted to the terminals 1304-1 to 1304-n and output at the terminal.
[0064]
FIG. 13 shows an example when the present embodiment is applied to a map creation tool which is one of image generation apparatuses. The developer inputs various data necessary for creating a map and gives various instructions to the map creation tool using operation means such as the keyboard 200 and the mouse 202.
[0065]
The processing unit 210 includes a map creation unit 212 and an image creation unit 214 that creates an image based on the map data created by the map creation unit 212. The map creating unit 212 includes an object deforming unit 213 that performs processing for deforming a map object by oblique coordinate conversion.
[0066]
The information storage medium 216 stores a map creation program and various data necessary for executing this program.
[0067]
The processing unit 210 performs various processes based on input data from the keyboard 200 and the mouse 202 and data stored in the information storage medium 216. As a result, various images necessary for creating the map are displayed on the display unit 218. According to this map creation tool, a map can be created while confirming the inclination angle and length of the course 40, the shape (deformation) of the map object 50, etc., so that the design work can be made more efficient.
[0068]
The present invention is not limited to that described in the above embodiment, and various modifications can be made.
[0069]
For example, the present invention is not limited to an object for dividing a course, and can be applied to various map objects as long as it is at least a map object constituting a map.
[0070]
Also, the method of oblique coordinate transformation is not limited to that described in the present embodiment, and various modifications can be made as long as it is mathematically equivalent to this.
[0071]
In the present embodiment, the case where the present invention is applied to a bicycle competition game has been described. However, the present invention is not limited to this, and various games (other competition games, sports games, battle games, role playing games, shooting games, etc.) ).
[0072]
The present invention is not limited to home and business game devices, but also various image generation devices such as a simulator, a large attraction device in which a large number of players participate, a personal computer, a multimedia terminal, and a system board for generating game images. It can also be applied to.
[Brief description of the drawings]
FIG. 1 is an example of an external view of an image generation apparatus according to an embodiment.
FIG. 2 is an example of a functional block diagram of the image generation apparatus of the present embodiment.
FIGS. 3A and 3B are diagrams for explaining a map and a map object. FIG.
FIG. 4 is a diagram for explaining a problem that occurs when oblique coordinate conversion is not performed.
FIG. 5 is a diagram for explaining the principle of the embodiment;
FIG. 6 is a diagram for explaining oblique coordinate transformation.
FIGS. 7A and 7B are diagrams illustrating examples of images generated according to the present embodiment.
FIGS. 8A and 8B are diagrams for explaining scaling along the oblique axis. FIGS.
FIG. 9 is a flowchart for explaining a detailed processing example of the present embodiment;
FIG. 10 is a diagram for explaining object display parameters.
FIG. 11 is a diagram illustrating an example of a hardware configuration capable of realizing the present embodiment.
FIGS. 12A and 12B are diagrams illustrating examples of various types of apparatuses to which the present embodiment is applied.
FIG. 13 is a diagram showing an example when the present embodiment is applied to a map creation tool.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Operation part 12 Display part 16 Riding housing | casing 17 Saddle 18 Display 20 Mobile body 30 Pedal 32 Handle 38 Map 40 Course 50 Map object 52 Parts (support of map object)
60 viewpoint 100 processing unit 110 game calculation unit 112 moving body calculation unit 116 object transformation unit 120 object data storage unit 150 image generation unit 190 information storage medium

Claims (8)

An image generation device for generating an image of the object space at a given viewpoint moving in the object space,
Means for storing map object data constituting a map of the object space as map object data in an orthogonal coordinate system;
Data for the arrangement position of the map object arranged in the object space and data for converting the map object from a map object in an orthogonal coordinate system to a map object in an oblique coordinate system , Means for storing oblique coordinate conversion parameter data in which parameters are set according to the inclination angle of the arrangement position ;
Processing for transforming a given map object in the orthogonal coordinate system into a map object in an oblique coordinate system according to the inclination angle of the arrangement position of the given map object based on the oblique coordinate conversion parameter Means to do,
Means for arranging the deformed oblique coordinate system map object in the object space based on the data of the arrangement position;
Means for generating an image of the object space at a given viewpoint moving in the object space. In claim 1,
An image generation apparatus characterized by deforming a map object so that a given part constituting the map object is oriented in a vertical direction. An image generation device for generating an image of the object space at a given viewpoint moving in the object space,
Means for storing map object data constituting a map of the object space as map object data in an orthogonal coordinate system;
Data for the arrangement position of the map object arranged in the object space, and data for converting the map object from a map object in an orthogonal coordinate system to a map object in an oblique coordinate system , the map object being Means for storing oblique coordinate transformation parameter data in which parameters are set so that a given part of the component is oriented vertically ;
To transform a given map object in the orthogonal coordinate system into a map object in an oblique coordinate system in which a given part constituting the given map object faces a vertical direction based on the oblique coordinate transformation parameter Means for performing
Means for arranging the deformed oblique coordinate system map object in the object space based on the data of the arrangement position;
Means for generating an image of the object space at a given viewpoint moving in the object space. In any one of Claims 1 thru | or 3,
An image generating apparatus, wherein a map object is deformed so that the map object is scaled in a direction along at least one oblique axis of the oblique coordinate system. In any one of Claims 1 thru | or 4,
An image, wherein the map object is deformed so that the map object is scaled in a direction along at least one oblique axis of the oblique coordinate system according to a length of an area in which the map object is arranged. Generator. In any one of Claims 1 thru | or 5,
An image generating apparatus, wherein the map object is an object for separating courses on a map. An information storage medium storing a program for generating an image of the object space at a given viewpoint moving in the object space,
The program is
Means for storing map object data constituting a map of the object space as map object data in an orthogonal coordinate system;
Data for the arrangement position of the map object arranged in the object space and data for converting the map object from a map object in an orthogonal coordinate system to a map object in an oblique coordinate system , Means for storing oblique coordinate conversion parameter data in which parameters are set according to the inclination angle of the arrangement position ;
Processing for transforming a given map object in the orthogonal coordinate system into a map object in an oblique coordinate system according to the inclination angle of the arrangement position of the given map object based on the oblique coordinate conversion parameter Means to do,
Means for arranging the deformed oblique coordinate system map object in the object space based on the data of the arrangement position;
An information storage medium that causes a computer to function as means for generating an image of the object space at a given viewpoint that moves in the object space. An information storage medium storing a program for generating an image of the object space at a given viewpoint moving in the object space,
The program is
Means for storing map object data constituting a map of the object space as map object data in an orthogonal coordinate system;
Data for the arrangement position of the map object arranged in the object space, and data for converting the map object from a map object in an orthogonal coordinate system to a map object in an oblique coordinate system , the map object being Means for storing oblique coordinate transformation parameter data in which parameters are set so that a given part of the component is oriented vertically ;
To transform a given map object in the orthogonal coordinate system into a map object in an oblique coordinate system in which a given part constituting the given map object faces a vertical direction based on the oblique coordinate transformation parameter Means for performing
Means for arranging the deformed oblique coordinate system map object in the object space based on the data of the arrangement position;
An information storage medium for causing a computer to function as means for generating an image of the object space at a given viewpoint moving in the object space.

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