JP4367804B2 - Image generation system and information storage medium - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an image generation system and an information storage medium.
[0002]
[Background Art and Problems to be Solved by the Invention]
2. Description of the Related Art Conventionally, an image generation system that generates an image that can be seen from a given viewpoint (virtual camera) in an object space that is a virtual three-dimensional space is known. Taking an image generation system that can enjoy a role-playing game as an example, a player operates a character (model) and moves it on a map in the object space to play against enemy characters or interact with other characters. And enjoy the game by visiting various towns.
[0003]
In such an image generation system, when displaying display objects such as characters and vehicles, a three-dimensional single three-dimensional model obtained by modeling these display objects is prepared. Then, this three-dimensional model is arranged in the object space, and geometry processing (three-dimensional coordinate calculation) is performed to automatically generate an image that can be seen from the virtual camera. Therefore, once a single three-dimensional model is prepared, it is possible to generate consistent images even when the three-dimensional model is viewed from various directions using a virtual camera.
[0004]
However, an image generated by performing geometry processing using a single three-dimensional model in this way is a mathematically correct image, but there is a problem that it cannot appeal to the player's feelings.
[0005]
In particular, when a cartoon character is expressed by a three-dimensional model and an image is generated by performing accurate geometry processing, an image having a different image from that which a general person is accustomed to using a cartoon is generated.
[0006]
The present invention has been made in view of the above problems, and an object of the present invention is to provide an image generation system and an information storage medium that can generate an image of a display object that cannot be originally represented by a single three-dimensional model. Is to provide.
[0007]
[Means for Solving the Problems]
In order to solve the above-described problems, the present invention is an image generation system for generating an image, which is based on information representing a relative angle between the direction of a virtual camera and the direction of a three-dimensional model. A means for selecting one or a plurality of model data used to generate an image of a three-dimensional model from a plurality of model data prepared for displaying a three-dimensional model, and an object based on the selected model data And means for generating an image visible from a virtual camera in the space. The information storage medium according to the present invention is an information storage medium that can be used by a computer, and includes a program for executing the above means. The program according to the present invention is a program (including a program embodied in a carrier wave) that can be used by a computer, and includes a processing routine for executing the above means.
[0008]
According to the present invention, based on the relative angle between the direction of the virtual camera and the direction of the three-dimensional model (information indicating the relative angle), the model data used for image generation of the three-dimensional model is sequentially switched (the relative angle described above). The shape of the three-dimensional model is deformed). Therefore, a three-dimensional model can be expressed by optimal model data corresponding to each relative angle. As a result, an image of a display object (for example, a cartoon character) that cannot be represented by a single three-dimensional model can be generated, and an image that cannot be represented by a single three-dimensional model alone can be realized. Moreover, according to the present invention, since an image is generated using a three-dimensional model, an accurate image corresponding to the direction of the virtual camera can be obtained for a portion where the image tone does not need to be changed.
[0009]
In addition, the image generation system, the information storage medium, and the program according to the present invention provide the first model data in the Kth model data for the case where the relative angle between the direction of the virtual camera and the direction of the three-dimensional model is the Kth angle. The local position of the part is different from the local position of the first part in the Lth model data for the case where the relative angle is the Lth angle.
[0010]
In addition, the image generation system, the information storage medium, and the program according to the present invention provide the second model data in the Kth model data for the case where the relative angle between the direction of the virtual camera and the direction of the three-dimensional model is the Kth angle. The shape of the part is different from the shape of the second part in the Lth model data for the case where the relative angle is the Lth angle.
[0011]
Furthermore, the image generation system, information storage medium, and program according to the present invention are displayed in the Kth model data for the case where the relative angle between the direction of the virtual camera and the direction of the three-dimensional model is the Kth angle. The third part is not displayed or simplified in the Lth model data for the case where the relative angle is the Lth angle.
[0012]
As described above, by making the local position, shape, display / non-display, and the like of the parts different between the model data, it is possible to realize an image expression optimal for the expression of a cartoon character or the like.
[0013]
The image generation system, the information storage medium, and the program according to the present invention are the I-th to J-th models for the case where the relative angle between the direction of the virtual camera and the direction of the three-dimensional model is the I-th to J-th angles. The data is model data for displaying the I-th to J-th two-dimensional images when the relative angle is the I-th to J-th angles. In this way, first, the design of the I-th to J-th two-dimensional images (such as storyboards) is determined, and the I-th to J-th items are determined based on the I-th to J-th two-dimensional images. Model data can be created. Thereby, the creation work of the I-th to J-th model data can be made efficient.
[0014]
Further, the image generation system, the information storage medium, and the program according to the present invention, when the relative angle between the direction of the virtual camera and the direction of the three-dimensional model is an angle between the Mth angle and the Nth angle, A three-dimensional model image is generated based on model data obtained by interpolation between the Mth model data for the Mth angle and the Nth model data for the Nth angle. In this way, it is possible to save the used storage capacity of the model data and to smoothly change the shape of the three-dimensional model.
[0015]
In the image generation system, the information storage medium, and the program according to the present invention, the three-dimensional model is a sub model that constitutes an overall model, and the selected model data is used for generating a sub model image. It is characterized by model data. In this way, a plurality of model data is not required for the other parts in the overall model, and only a single model data is required, so that the used storage capacity of the model data can be saved.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
[0017]
1. FIG. 1 shows an example of a block diagram of this embodiment. In this figure, the present embodiment may include at least the processing unit 100 (or may include the processing unit 100 and the storage unit 170, or the processing unit 100, the storage unit 170, and the information storage medium 180), and other blocks. (For example, the operation unit 160, the display unit 190, the sound output unit 192, the portable information storage device 194, and the communication unit 196) can be arbitrary constituent elements.
[0018]
Here, the processing unit 100 performs various processes such as control of the entire system, instruction instruction to each block in the system, game processing, image processing, sound processing, and the like. , DSP, etc.) or ASIC (gate array, etc.) or a given program (game program).
[0019]
The operation unit 160 is for a player to input operation data, and the function can be realized by hardware such as a lever, a button, and a housing.
[0020]
The storage unit 170 serves as a work area such as the processing unit 100 or the communication unit 196, and its function can be realized by hardware such as a RAM.
[0021]
An information storage medium (storage medium usable by a computer) 180 stores information such as programs and data, and functions thereof are an optical disk (CD, DVD), a magneto-optical disk (MO), a magnetic disk, and a hard disk. It can be realized by hardware such as a magnetic tape or a memory (ROM). The processing unit 100 performs various processes of the present invention (this embodiment) based on information stored in the information storage medium 180. That is, the information storage medium 180 stores information (program or program and data) for executing the means of the present invention (this embodiment) (particularly, the blocks included in the processing unit 100).
[0022]
Part or all of the information stored in the information storage medium 180 is transferred to the storage unit 170 when the system is powered on. Information stored in the information storage medium 180 includes program code, image data, sound data, display object shape data, table data, list data, and data for instructing the processing of the present invention. It includes at least one of information, information for performing processing according to the instruction, and the like.
[0023]
The display unit 190 outputs an image generated according to the present embodiment, and the function thereof can be realized by hardware such as a CRT, LCD, or HMD (head mounted display).
[0024]
The sound output unit 192 outputs the sound generated by the present embodiment, and its function can be realized by hardware such as a speaker.
[0025]
The portable information storage device 194 stores player personal data, save data, and the like. As the portable information storage device 194, a memory card, a portable game device, and the like can be considered.
[0026]
The communication unit 196 performs various controls for communicating with the outside (for example, a host device or other image generation system), and functions as hardware such as various processors or a communication ASIC. Or by a program.
[0027]
The program or data for executing the means of the present invention (this embodiment) may be distributed from the information storage medium of the host device (server) to the information storage medium 180 via the network and the communication unit 196. Good. Use of such an information storage medium of the host device (server) is also included in the scope of the present invention.
[0028]
The processing unit 100 includes a game processing unit 110, an image generation unit 130, and a sound generation unit 150.
[0029]
Here, the game processing unit 110 receives a coin (price) acceptance process, various mode setting processes, a game progress process, a selection screen setting process, the position and direction of the three-dimensional model (the rotation angle around the X, Y, or Z axis). ) Processing, 3D model operation processing (motion processing), virtual camera (viewpoint) position and orientation processing, map placement in object space, hit check processing, game results (results, results) ), Various game processes such as a process for a plurality of players to play in a common game space, a game over process, etc., from the operation data from the operation unit 160 and the portable information storage device 194. This is based on personal data, stored data, game programs, etc.
[0030]
The image generation unit 130 performs various types of image processing in accordance with instructions from the game processing unit 110, for example, generates an image that can be seen from a virtual camera (viewpoint) in the object space, and outputs the image to the display unit 190. In addition, the sound generation unit 150 performs various types of sound processing in accordance with instructions from the game processing unit 110, generates sounds such as BGM, sound effects, and voices, and outputs them to the sound output unit 192.
[0031]
Note that all of the functions of the game processing unit 110, the image generation unit 130, and the sound generation unit 150 may be realized by hardware, or all of them may be realized by a program. Alternatively, it may be realized by both hardware and a program.
[0032]
The game processing unit 110 includes a model calculation unit 112, a virtual camera calculation unit 114, a model data selection unit 116, and an interpolation unit 118.
[0033]
Here, the model calculation unit 112 performs processing for obtaining the position and direction of the three-dimensional model. In this case, the position and direction of the three-dimensional model may be obtained from the operation data of the player input via the operation unit 160 or may be obtained by physical simulation. Or you may obtain | require based on the data (table) prepared previously.
[0034]
The virtual camera calculation unit 114 performs processing for obtaining the position and direction of the virtual camera. In this case, the position and direction of the virtual camera may be obtained based on the operation data of the player input via the operation unit 160 or may be obtained by a virtual camera control program. Or you may obtain | require based on the data (table) prepared previously.
[0035]
The model data selection unit 116, based on the information indicating the relative angle between the direction of the virtual camera and the direction of the three-dimensional model, a plurality of model data (representing the shape of the three-dimensional model) stored in the model data storage unit 172. Data) is used to select one or a plurality of model data used for generating a three-dimensional model image. That is, a process of sequentially switching the three-dimensional model used for image generation of the three-dimensional model is performed based on the rotation angle information of the virtual camera and the rotation angle information of the three-dimensional model. By doing so, it is possible to generate an image of a display object (for example, a cartoon character) that cannot be represented by a single three-dimensional model.
[0036]
The interpolation unit 118 performs model data interpolation processing. More specifically, for example, when the relative angle between the direction of the virtual camera and the direction of the three-dimensional model is an angle between the first angle and the second angle, the first angle for the first angle Interpolation processing (for example, vertex coordinate interpolation) between the model data and the second model data for the second angle is performed. A three-dimensional model image is generated based on the model data obtained by this interpolation processing.
[0037]
The image generation unit 130 includes a geometry processing unit 132 (three-dimensional coordinate calculation unit) and a drawing unit 140 (rendering unit).
[0038]
Here, based on the model data selected by the model data selection unit 116, the geometry processing unit 132 performs various geometry processing (three-dimensional coordinate calculation) such as coordinate transformation, clipping processing, and perspective transformation.
[0039]
The drawing unit 140 performs drawing processing of polygons (primitive surfaces) constituting the model data based on the model data after geometry processing (after perspective transformation). As a result, an image that can be seen from the virtual camera (viewpoint) is generated in the object space.
[0040]
Note that the image generation system of the present embodiment may be a system dedicated to the single player mode in which only one player can play, or not only the single player mode but also a multiplayer mode in which a plurality of players can play. The system may also be provided.
[0041]
Further, when a plurality of players play, game images and game sounds to be provided to the plurality of players may be generated using one terminal, or connected via a network (transmission line, communication line) or the like. Alternatively, it may be generated using a plurality of terminals.
[0042]
2. Features of this embodiment A feature of this embodiment is that a plurality of model data are prepared in order to generate a single three-dimensional model image.
[0043]
More specifically, as shown in FIG. 2, a plurality of model data 1, 2, 3,... Are prepared in order to display a single three-dimensional model. Based on the relative angle θ between the direction CD of the virtual camera 20 and the direction MD (for example, the direction in which the virtual camera 20 faces), a three-dimensional model is selected from among these model data 1, 2, 3,. One or a plurality of model data to be used for image generation is selected. That is, model data used for image generation is sequentially switched based on a relative angle (may be information that is mathematically equivalent to the relative angle). Based on the selected model data, an image that can be seen from the virtual camera 20 in the object space is generated.
[0044]
For example, in FIG. 2, model data 1 is selected when the relative angle θ = θ1, model data 2 is selected when θ = θ2, and model data 3 is selected when θ = θ3.
[0045]
The model data 1, 2, 3,... Are different in the local position of the part, the shape of the part, or the display / non-display of the part. That is, for example, the part that was in the first local position (the position in the local coordinate system of the three-dimensional model) in the model data 1 is in the second local position in the model data 2. In addition, the part having the first shape in the model data 1 becomes the second shape in the model data 2. In addition, the parts displayed in the model data 1 are not displayed (simple display) in the model data 2.
[0046]
Various parts such as nose, mouth, eyes, ears, hair, glasses, horns, fingers, headlights, tires, doors, windows, weapons, etc. can be considered as parts.
[0047]
Further, as shown in FIG. 3, the selected model data is read from the model data storage unit 172 in FIG. 1 based on the model number (key information) set in association with each model data.
[0048]
Here, the model data is data for representing the shape of the three-dimensional model. For example, in FIG. 3, the model data is composed of data of a plurality of submodels (head, chest, waist, arms, legs, etc.), and the submodel data is composed of a plurality of polygon data. The polygon data is composed of data such as vertex coordinates, vertex texture coordinates, and normal vectors.
[0049]
As shown in FIG. 4, the model data selected based on the relative angle may be data of a sub model that is a component of the overall model. For example, a plurality of head model data (sub model data in a broad sense) is prepared, and one or a plurality of head model data is selected from the plurality of head model data based on the relative angle. To do. That is, only a part of the entire model is switched according to the relative angle. In this way, a plurality of model data is not required for the other portions, and only a single model data is required, so that the storage capacity of the model data can be saved.
[0050]
As described above, according to the present embodiment, the model data used for image generation is switched based on the relative angle between the direction of the virtual camera and the direction of the three-dimensional model. 3D model can be expressed with simple model data. That is, a display object that cannot be represented by a single three-dimensional model can be displayed.
[0051]
That is, normally, in this type of image generation system, a single three-dimensional model is prepared, this three-dimensional model is arranged in the object space, and geometry processing (three-dimensional coordinate calculation) is performed so that it can be seen from a virtual camera. Generate an image. This makes it possible to generate a correct image without any contradiction when viewing the three-dimensional object from any direction. Therefore, normally, it is not necessary to prepare a plurality of three-dimensional models.
[0052]
However, for example, when a cartoon character is represented by a three-dimensional model, it has been found that even if an image is generated using a single three-dimensional model in this way, a comical comical image cannot be obtained. did.
[0053]
In other words, in such a manga world, there is a style that ordinary people are accustomed to. However, if an accurate geometry process is performed using a single three-dimensional model to generate an image, the image becomes too real, and a so-called comical image cannot be obtained. For this reason, there is a problem that it is impossible to appeal to the feelings of ordinary people who love comics.
[0054]
On the other hand, according to the present embodiment, the three-dimensional model can be expressed by optimal model data corresponding to the relative angle between the direction of the virtual camera and the direction of the three-dimensional model. Therefore, it is possible to generate an image having a comic style that is familiar to ordinary people.
[0055]
In addition, according to the present embodiment, since an image is generated using a three-dimensional model, it is possible to obtain an accurate image according to the direction of the virtual camera for a portion where the image tone does not need to be changed. There is.
[0056]
For example, in A <b> 1 of FIG. 5, the virtual camera 20 looks at the front of the three-dimensional model 12. In this case, model data 1 corresponding to the relative angle θ = θ1 is selected. Thereby, an image as shown in A3 is generated.
[0057]
On the other hand, in A <b> 2 of FIG. 5, the virtual camera 20 looks at the right front of the three-dimensional model 12. In this case, model data 2 corresponding to the relative angle θ = θ2 is selected. The model data 2 of A2 and the model data 1 of A1 are different in local positions of the corners 30 and 32 (parts) (positions in the local coordinate system of the three-dimensional model). Thus, by changing the local position, an image as shown in A4 is generated.
[0058]
As can be seen by comparing A3 and A4, in A4, the positions of the corners 30 and 32 are not changed from A3 even though the face portion is facing sideways. These corners 30 and 32 are characteristic portions of the three-dimensional model 12. Therefore, even if the viewing direction of the virtual camera 20 changes, it is natural and attractive for ordinary people who are familiar with comics not to change the positions of these corners 30 and 32.
[0059]
In the present embodiment, the model data is switched according to the viewing direction (relative angle θ) of the virtual camera 20. Accordingly, the local positions of the corners 30 and 32 can be changed in accordance with the viewing direction (relative angle θ) of the virtual camera 20, and an image expression that is optimal for the expression of a cartoon character as shown in A3 and A4 of FIG. realizable. In addition, since the appearance of the face portion changes to the appearance according to the viewing direction of the virtual camera 20 (the face faces sideways), the advantage obtained by using the three-dimensional model can be maintained as it is. .
[0060]
Also, in FIG. 6, when the viewing direction of the virtual camera 20 changes as shown in B1 and B2 (when the relative angle θ changes from θ1 to θ2), the shape of the nose 34 (parts) of the three-dimensional model 14 Changes. That is, the shape of the nose 34 of the model data 1 used when the relative angle θ = θ1 is different from the shape of the nose 34 of the model data 2 used when the relative angle θ = θ2. As a result, images as shown in B3 and B4 of FIG. 6 are generated.
[0061]
When the shape of the nose 34 is viewed from the front, the shape shown in B1 and B3 of FIG. 6 can better represent the characteristics of the character represented by the three-dimensional model 14, and the cartoon It is preferable in terms of design. However, when viewed from the side, if the shape of the nose 34 remains the shape of B1 and B3 in FIG. 6, an unnatural image is obtained. Therefore, in this case, the shape of the nose 34 is changed to the shapes shown in B2 and B4. Thereby, a more natural image can be generated.
[0062]
7, the nose 36 of the three-dimensional model 16 is not displayed, whereas the nose 36 is displayed in C2. That is, in the model data 1 used when the relative angle θ = θ1, the nose 36 is not displayed, whereas in the model data 2 used when θ = θ2, the nose 36 is displayed. . As a result, images as indicated by C3 and C4 in FIG. 7 are generated.
[0063]
When viewed from the front, the girl character has a cute expression when the nose is not displayed as shown in C1 and C3 of FIG. On the other hand, when viewed from the side, if the nose 36 is not displayed, an unnatural image is obtained. Therefore, in this case, the nose 36 is displayed as shown by C2 and C4 in FIG. This makes it possible to generate an image of the three-dimensional model 16 that has a cute expression when viewed from the front and a natural expression when viewed from the side.
[0064]
7, the nose is not displayed when viewed from the front, but the nose 36 may be simply displayed as shown in D <b> 1 and D <b> 3 of FIG. To display).
[0065]
Now, it is desirable to create each model data of the three-dimensional model in the following procedure, for example.
[0066]
That is, as shown in FIG. 9, a two-dimensional storyboard (two-dimensional image) is prepared when the character represented by the three-dimensional model 10 is viewed from each direction (each relative angle). For example, in FIG. 9, a 2D picture container 40 when viewed from the front (θ = θ1) and a 2D picture container 42 when viewed from the right front (θ = θ2) are prepared. Here, the 2D storyboard 40 is a storyboard as shown by A3 in FIG. 5, B3 in FIG. 6, C3 in FIG. 7, and D3 in FIG. On the other hand, the 2D storyboard 42 is a storyboard as shown by A4 in FIG. 5, B4 in FIG. 6, C4 in FIG. 7, and D4 in FIG.
[0067]
The designer first determines the images of these 2D storyboards 40 and 42. Then, the model data 1 and 2 are created so that the images of these 2D storyboards 40 and 42 are displayed. In this case, it is desirable to create other model data (for example, model data 2) by changing each part of the model data (for example, model data 1) serving as a reference. In this way, the model data creation work can be made more efficient.
[0068]
Since it is not realistic to prepare model data corresponding to all angles, it is desirable to perform model data interpolation processing.
[0069]
For example, as shown in FIG. 10, when the relative angle θ between the direction of the virtual camera and the direction of the three-dimensional model is between 0 degrees and 30 degrees, the model data 1 for 0 degrees and the data for 30 degrees A process of interpolating with the model data 2 is performed. Similarly, when the angle θ is between 30 degrees and 60 degrees, a process of interpolating the model data 2 for 30 degrees and the model data 3 for 60 degrees is performed. Then, an image is generated using the model data obtained by the interpolation process. Thereby, the used storage capacity of model data can be saved. Further, the shape of the three-dimensional model can be smoothly changed at angles at which the model data is changed (for example, 0 degrees, 30 degrees, and 60 degrees in FIG. 10).
[0070]
The model data interpolation process can be realized by interpolating the coordinates of the vertices of the model data. That is, for example, the coordinates of the first vertex of the model data 1 and the coordinates of the first vertex of the model data 2 are interpolated, and the coordinates of the vertex obtained by the interpolation are used as the first of the newly generated model data. The coordinates of the vertex of
[0071]
3. Processing of this embodiment Next, a detailed processing example of this embodiment will be described with reference to the flowchart of FIG.
[0072]
First, the position and direction of a three-dimensional model (an entire model or a sub model such as a head model) in the world coordinate system are calculated (step S1). Next, the position and direction of the virtual camera (viewpoint) in the world coordinate system are calculated (step S2). That is, the screen coordinate system of the virtual camera is calculated.
[0073]
Next, a relative angle between the direction of the three-dimensional model and the direction of the virtual camera is calculated (step S3). That is, the direction of the three-dimensional model in the screen coordinate system is calculated.
[0074]
Next, based on the obtained relative angle, model data is selected as described in FIG. 2 (step S4). Then, the model number (key information) of the selected model data is designated, the model data is read from the model data storage unit, and transferred to the geometry processing unit (step S5).
[0075]
Next, geometry processing such as coordinate transformation, clipping, and perspective transformation is performed based on the model data (step S6), and the object data (polygon data) after the geometry processing (after perspective transformation) is transferred to the drawing unit (step S6). S7). Then, a drawing process is performed based on the model data after the geometry process (step S8).
[0076]
As described above, the model data used for image generation can be sequentially switched in accordance with the relative angle between the direction of the three-dimensional model and the direction of the virtual camera.
[0077]
4). Hardware Configuration Next, an example of a hardware configuration capable of realizing the present embodiment will be described with reference to FIG.
[0078]
The main processor 900 operates based on a program stored in the CD 982 (information storage medium), a program transferred via the communication interface 990, or a program stored in the ROM 950 (one of information storage media). Various processes such as processing, image processing, and sound processing are executed.
[0079]
The coprocessor 902 assists the processing of the main processor 900, has a product-sum calculator and a divider capable of high-speed parallel calculation, and executes matrix calculation (vector calculation) at high speed. For example, when processing such as matrix calculation is required for physical simulation for moving or operating (motion) a three-dimensional model, a program operating on the main processor 900 instructs the coprocessor 902 to perform the processing. (Request).
[0080]
The geometry processor 904 performs geometry processing such as coordinate transformation, perspective transformation, light source calculation, and curved surface generation, has a product-sum calculator and a divider capable of high-speed parallel computation, and performs matrix computation (vector computation). Run fast. For example, when processing such as coordinate transformation, perspective transformation, and light source calculation is performed, a program operating on the main processor 900 instructs the geometry processor 904 to perform the processing.
[0081]
The data decompression processor 906 performs a decoding process for decompressing the compressed image data and sound data, and a process for accelerating the decoding process of the main processor 900. As a result, a moving image compressed by the MPEG method or the like can be displayed on the opening screen, the intermission screen, the ending screen, or the game screen. Note that the image data and sound data to be decoded are stored in the ROM 950 and the CD 982 or transferred from the outside via the communication interface 990.
[0082]
The drawing processor 910 performs drawing (rendering) processing at high speed. During the rendering process, the main processor 900 uses the function of the DMA controller 970 to pass the model data (polygon data) after the geometry processing to the rendering processor 910 and, if necessary, to the texture storage unit 924 for the texture. Forward. Then, the drawing processor 910 performs high-speed transfer of polygons (primitive surfaces) constituting the three-dimensional model to the frame buffer 922 while performing hidden surface removal using a Z buffer or the like based on the model data (polygon data) and texture. To draw. The drawing processor 910 can also perform α blending (translucent processing), mip mapping, fog processing, trilinear filtering, anti-aliasing, shading processing, and the like. When an image for one frame is written in the frame buffer 922, the image is displayed on the display 912.
[0083]
The sound processor 930 includes a multi-channel ADPCM sound source and the like, and generates high-quality game sounds such as BGM, sound effects, and sounds. The generated game sound is output from the speaker 932.
[0084]
Operation data from the game controller 942, save data from the memory card 944, and personal data are transferred via the serial interface 940.
[0085]
The ROM 950 stores system programs and the like. In the case of an arcade game system, the ROM 950 functions as an information storage medium, and various programs are stored in the ROM 950. A hard disk may be used instead of the ROM 950.
[0086]
The RAM 960 is used as a work area for various processors.
[0087]
The DMA controller 970 controls DMA transfer between the processor and memory (RAM, VRAM, ROM, etc.).
[0088]
The CD drive 980 drives a CD 982 (information storage medium) in which programs, image data, sound data, and the like are stored, and enables access to these programs and data.
[0089]
The communication interface 990 is an interface for transferring data to and from the outside via a network. In this case, as a network connected to the communication interface 990, a communication line (analog telephone line, ISDN), a high-speed serial bus, or the like can be considered. By using a communication line, data transfer via the Internet becomes possible. Further, by using the high-speed serial bus, data transfer between other image generation systems and other game systems becomes possible.
[0090]
All of the means of the present invention may be executed by hardware alone, or may be executed only by a program stored in an information storage medium or a program distributed via a communication interface. Alternatively, it may be executed by both hardware and a program.
[0091]
When each means of the present invention is executed by both hardware and a program, a program (program, data) for executing each means of the present invention using hardware is stored in the information storage medium. Will be stored. More specifically, the program instructs each processor 902, 904, 906, 910, 930, etc., which is hardware, and passes data if necessary. Each processor 902, 904, 906, 910, 930, etc. executes each means of the present invention based on the instruction and the passed data.
[0092]
FIG. 13A shows an example when the present embodiment is applied to an arcade game system. The player enjoys the game by operating the lever 1102, the button 1104, and the like while viewing the game image displayed on the display 1100. Various processors and various memories are mounted on the built-in system board (circuit board) 1106. A program (or program or data) for executing each unit of the present invention is stored in a memory 1108 which is an information storage medium on the system board 1106. Hereinafter, this information is referred to as storage information.
[0093]
FIG. 13B shows an example in which this embodiment is applied to a home game system. 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 the CD 1206, which is an information storage medium that is detachable from the main system, or in the memory cards 1208, 1209, and the like.
[0094]
FIG. 13C shows a host device 1300 and terminals 1304-1 to 1304-n connected to the host device 1300 via a network 1302 (a small-scale network such as a LAN or a wide area network such as the Internet). An example of applying this embodiment to a system including 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 can generate game images and game sounds stand-alone, the host device 1300 receives a game program and the like for generating game images and game sounds from the terminal 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.
[0095]
In the case of the configuration shown in FIG. 13C, each unit of the present invention may be executed in a distributed manner between the host device (server) and the terminal. The storage information for executing each means of the present invention may be distributed and stored in the information storage medium of the host device (server) and the information storage medium of the terminal.
[0096]
The terminal connected to the network may be a home game system or an arcade game system. When connecting the arcade game system to a network, a portable information storage device capable of exchanging information with the arcade game system and exchanging information with the home game system. It is desirable to use (memory card, portable game device).
[0097]
The present invention is not limited to that described in the above embodiment, and various modifications can be made.
[0098]
For example, in the invention according to the dependent claims of the present invention, a part of the constituent features of the dependent claims can be omitted. Moreover, the principal part of the invention according to one independent claim of the present invention can be made dependent on another independent claim.
[0099]
Further, the information indicating the relative angle between the direction of the virtual camera and the direction of the three-dimensional model is not limited to the relative angle, and includes information equivalent to the relative angle (for example, mathematically equivalent information).
[0100]
Further, as the plurality of model data prepared in the present invention, model data as described with reference to FIGS. 5 to 8 is particularly desirable, but the present invention is not limited to this.
[0101]
In the present invention, the display object represented by the three-dimensional model is particularly preferably a cartoon character, but is not limited thereto. For example, the present invention can also be applied to a case where other display objects (cars, airplanes, ships, houses, etc.) appearing in comics and display objects used other than comics are represented by a three-dimensional model.
[0102]
The present invention can also be applied to various games (such as fighting games, shooting games, robot fighting games, sports games, competitive games, role playing games, music playing games, dance games, etc.).
[0103]
The present invention also relates to various image generation systems such as a business game system, a home game system, a large attraction system in which a large number of players participate, a simulator, a multimedia terminal, an image generation system, and a system board for generating game images. Applicable.
[Brief description of the drawings]
FIG. 1 is an example of a block diagram of an image generation system according to an embodiment.
FIG. 2 is a diagram for explaining a model data switching method according to the present embodiment;
FIG. 3 is a diagram for explaining a model data reading method;
FIG. 4 is a diagram for explaining a sub model.
FIG. 5 is a diagram for explaining a method of making a local position of a part different between model data.
FIG. 6 is a diagram for explaining a method of changing the shape of a part between model data.
FIG. 7 is a diagram for explaining a method of changing display / non-display of parts between model data.
FIG. 8 is a diagram for explaining a technique for differentiating part display / simplified display between model data;
FIG. 9 is a diagram for explaining a method of creating model data from a 2D storyboard.
FIG. 10 is a diagram for explaining model data interpolation processing;
FIG. 11 is a flowchart illustrating a detailed processing example of the present embodiment.
FIG. 12 is a diagram illustrating an example of a hardware configuration capable of realizing the present embodiment.
FIGS. 13A, 13B, and 13C are diagrams illustrating examples of various types of systems to which the present embodiment is applied.
[Explanation of symbols]
10, 12, 14, 16 3D model 20 Virtual camera 30, 32 Angle 34, 36 Nose 40, 42 2D storyboard (2D image)
DESCRIPTION OF SYMBOLS 100 Processing part 110 Game processing part 112 Model calculation part 114 Virtual camera calculation part 116 Model data selection part 118 Interpolation part 130 Image generation part 132 Geometry process part 140 Drawing part 150 Sound generation part 160 Operation part 170 Storage part 172 Model data storage part 180 Information storage medium 190 Display unit 192 Sound output unit 194 Portable information storage device 196 Communication unit

Claims (12)

An image generation system for generating an image,
Storage means for storing a plurality of three-dimensional model data for one three-dimensional model;
Processing means for performing processing for obtaining a direction of the three-dimensional model;
One or a plurality of three- dimensional models used to generate an image of the three-dimensional model from the plurality of three-dimensional model data based on information representing a relative angle between the direction of the virtual camera and the direction of the three-dimensional model. A selection means for selecting model data;
Means for generating an image of the 3D model visible from the virtual camera in object space based on the selected 3D model data;
Including
The selection means includes
When the relative angle is the Kth angle, the Kth three-dimensional model data is selected from the plurality of three-dimensional model data, and when the relative angle is the Lth angle, the plurality of 3 Select Lth 3D model data from the 3D model data,
Each of the plurality of three-dimensional model data is composed of a plurality of parts,
A part of the plurality of parts is
Unlike the local position and the three-dimensional model data of the three-dimensional model data of said first K No. L,
The other parts of the plurality of parts are:
Image generation system wherein the local position in a three-dimensional model data of the three-dimensional model data of said first K No. L are identical. An image generation system for generating an image,
Storage means for storing a plurality of three-dimensional model data for one three-dimensional model;
Processing means for performing processing for obtaining a direction of the three-dimensional model;
One or a plurality of three- dimensional models used for generating an image of the three-dimensional model from the plurality of three-dimensional model data based on information representing a relative angle between the direction of the virtual camera and the direction of the three-dimensional model. A means of selecting model data;
Means for generating an image of the 3D model visible from the virtual camera in object space based on the selected 3D model data;
Including
The selection means includes
When the relative angle is the Kth angle, the Kth three-dimensional model data is selected from the plurality of three-dimensional model data, and when the relative angle is the Lth angle, the plurality of 3 Select Lth 3D model data from the 3D model data,
Each of the plurality of three-dimensional model data is composed of a plurality of parts,
A part of the plurality of parts is
Different shapes in a three-dimensional model data of a three-dimensional model data and the first L of the first K,
The other parts of the plurality of parts are:
Image generation system, wherein the shape and three-dimensional model data of a three-dimensional model data and the first L of the K are identical. An image generation system for generating an image,
Storage means for storing a plurality of three-dimensional model data for one three-dimensional model;
Processing means for performing processing for obtaining a direction of the three-dimensional model;
One or a plurality of three- dimensional models used to generate an image of the three-dimensional model from the plurality of three-dimensional model data based on information representing a relative angle between the direction of the virtual camera and the direction of the three-dimensional model. A means of selecting model data;
Means for generating an image of the 3D model visible from the virtual camera in object space based on the selected 3D model data;
Including
The selection means includes
When the relative angle is the Kth angle, the Kth three-dimensional model data is selected from the plurality of three-dimensional model data, and when the relative angle is the Lth angle, the plurality of 3 Select Lth 3D model data from the 3D model data,
Each of the plurality of three-dimensional model data is composed of a plurality of parts,
A part of the plurality of parts is
Although is displayed when three-dimensional model data of the first K is selected, it not displayed when three-dimensional model data of said first L is selected,
The other parts of the plurality of parts are:
Wherein in the case where three-dimensional model data of the K is selected, the image generation system, characterized in that three-dimensional model data of said first L is displayed in the case of choice. In any one of Claims 1 thru | or 3,
It three-dimensional model data of said first K~ second L is, the relative angle is a three-dimensional model data for displaying the 2-dimensional image of the K~ first L for the case of an angle of the K~ the L An image generation system characterized by the above. In any one of Claims 1 thru | or 4,
The relative angle when the angle between the angle and the angle of the L of the K, the three-dimensional model obtained by interpolation between the three-dimensional model data of the three-dimensional model data of said first K No. L An image generation system, wherein an image of the three-dimensional model is generated based on data. In any one of Claims 1 thru | or 5,
The three-dimensional model is a sub-model constituting an overall model;
An image generation system, wherein the selected three-dimensional model data is submodel data used for generating an image of a submodel. An information storage medium usable by a computer,
Storage means for storing a plurality of three-dimensional model data for one three-dimensional model;
Processing means for performing processing for obtaining a direction of the three-dimensional model;
One or a plurality of three- dimensional models used to generate an image of the three-dimensional model from the plurality of three-dimensional model data based on information representing a relative angle between the direction of the virtual camera and the direction of the three-dimensional model. A means of selecting model data;
Based on the selected three-dimensional model data, a program for causing a computer to function as means for generating an image of the three-dimensional model visible from the virtual camera in the object space is stored,
The selection means includes
When the relative angle is the Kth angle, the Kth three-dimensional model data is selected from the plurality of three-dimensional model data, and when the relative angle is the Lth angle, the plurality of 3 Select Lth 3D model data from the 3D model data,
Each of the plurality of three-dimensional model data is composed of a plurality of parts,
A part of the plurality of parts is
Unlike the local position and the three-dimensional model data of the three-dimensional model data of said first K No. L,
The other parts of the plurality of parts are:
Information storage medium, wherein the local location is the same in the three-dimensional model data of said first L and the three-dimensional model data of the first K. An information storage medium usable by a computer,
Storage means for storing a plurality of three-dimensional model data for one three-dimensional model;
Processing means for performing processing for obtaining a direction of the three-dimensional model;
One or a plurality of three- dimensional models used to generate an image of the three-dimensional model from the plurality of three-dimensional model data based on information representing a relative angle between the direction of the virtual camera and the direction of the three-dimensional model. A means of selecting model data;
Based on the selected three-dimensional model data, a program for causing a computer to function as means for generating an image of the three-dimensional model visible from the virtual camera in the object space is stored,
The selection means includes
When the relative angle is the Kth angle, the Kth three-dimensional model data is selected from the plurality of three-dimensional model data, and when the relative angle is the Lth angle, the plurality of 3 Select Lth 3D model data from the 3D model data,
Each of the plurality of three-dimensional model data is composed of a plurality of parts,
A part of the plurality of parts is
Different shapes in a three-dimensional model data of a three-dimensional model data and the first L of the first K,
The other parts of the plurality of parts are:
Information storage medium, wherein the shape and three-dimensional model data of a three-dimensional model data and the first L of the K are identical. An information storage medium usable by a computer,
Storage means for storing a plurality of three-dimensional model data for one three-dimensional model;
Processing means for performing processing for obtaining a direction of the three-dimensional model;
One or a plurality of three- dimensional models used for generating an image of the three-dimensional model from the plurality of three-dimensional model data based on information representing a relative angle between the direction of the virtual camera and the direction of the three-dimensional model. A means of selecting model data;
Based on the selected three-dimensional model data, a program for causing a computer to function as means for generating an image of the three-dimensional model visible from the virtual camera in the object space is stored,
The selection means includes
When the relative angle is the Kth angle, the Kth three-dimensional model data is selected from the plurality of three-dimensional model data, and when the relative angle is the Lth angle, the plurality of 3 Select Lth 3D model data from the 3D model data,
Each of the plurality of three-dimensional model data is composed of a plurality of parts,
A part of the plurality of parts is
Although is displayed when three-dimensional model data of the first K is selected, it not displayed when three-dimensional model data of said first L is selected,
The other parts of the plurality of parts are:
Wherein in the case where three-dimensional model data of the K is selected, the information storage medium three-dimensional model data of the L is equal to or displayed in the case chosen. In any one of Claims 7 thru | or 9,
It three-dimensional model data of said first K~ second L is, the relative angle is a three-dimensional model data for displaying the 2-dimensional image of the K~ first L for the case of an angle of the K~ the L An information storage medium characterized by the above. In any of claims 7 to 10,
The relative angle when the angle between the angle and the angle of the L of the K, the three-dimensional model obtained by interpolation between the three-dimensional model data of the three-dimensional model data of said first K No. L An information storage medium, wherein an image of the three-dimensional model is generated based on data. In any of claims 7 to 11,
The three-dimensional model is a sub-model constituting an overall model;
The information storage medium characterized in that the selected three-dimensional model data is submodel data used for generating an image of a submodel.

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