JP3735535B2 - Texture mapping method, recording medium, program, and program execution device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention provides a texture mapping method, a recording medium, a program, and a program capable of easily attaching a texture representing a light spot such as a light onto an image (video) generated by, for example, three-dimensional computer graphics It relates to an execution device.
[0002]
[Prior art]
A conventional technique for mapping a texture such as a light spot in an image (video) generated by three-dimensional computer graphics will be described with reference to a flowchart shown in FIG.
[0003]
Note that the processing according to this flowchart is performed using a personal computer (hereinafter also referred to as a PC) in which a three-dimensional (3D) modeling tool is installed.
[0004]
First, in step S1, a desired 3D model is generated using a PC.
[0005]
Next, in step S2, similarly, a plurality of types of light spot textures are generated by the PC.
[0006]
Next, in steps S3a to S3d constituting step S3, a light spot texture mapping process and its confirmation process are performed on the 3D model generated in step S1.
[0007]
In this case, first, in step S3a, while viewing the above-mentioned 3D model and a plurality of light spot textures on the monitor, a desired light spot texture is selected from the plurality of types of light spot textures, and the selected light spot is selected. The position coordinates on the 3D model where the texture is to be mapped are input with a keyboard or the like, and the light spot texture color (RGB values) is input with the keyboard or the like.
[0008]
Next, in step S3b, a rendering process is performed in which the light spot texture selected in step S2 is mapped (pasted) to the 3D model with reference to the position coordinates and the color.
[0009]
Next, in step S3c, the rendered video is displayed on the monitor display, and visual confirmation is performed in step S3d.
[0010]
In the visual confirmation processing in step S3d, if the mapping position (applied position) or color does not like, return to step S3a again and use the keyboard or the like to input numerical values for adjusting the position coordinates and color (numerical values). Corrective action).
[0011]
In this way, the light spot mapping / confirmation process in step S3 is repeated until the result of the visual confirmation in step S3d becomes affirmative.
[0012]
[Problems to be solved by the invention]
However, the conventional light spot texture mapping method cannot visually confirm the position of the light spot until the light spot is confirmed with the actual image displayed on the screen after the rendering process in step S3b. There's a problem.
[0013]
In addition, the position coordinates of the light spot each time require numerical input work and re-input work with a keyboard or the like for a desired position on the 3D model, and if the number of light spots is large, the input work takes an enormous amount of time. There is also a problem of requiring.
[0014]
Moreover, for example, when trying to express a starry sky or a night view of a city more realistically by light spot texture processing, the number of light spots is required from several hundred to tens of thousands. In the past, it was impossible to render the texture of 1 texture in a frame time (for example, 1/60 seconds) due to hardware limitations.
[0015]
As described above, in the conventional light spot texture mapping method, it takes a lot of labor and time to specify a large number of light spots on the 3D model, and the number of textures that can be pasted due to hardware restrictions. There are also restrictions.
[0016]
The present invention has been made in consideration of such problems, and a texture mapping method, a recording medium, a program, and a program execution device capable of easily mapping a texture such as a light spot on a 3D model. The purpose is to provide.
[0017]
[Means for Solving the Problems]
The texture mapping method of the present invention is a texture mapping method in an image processing apparatus for displaying a three-dimensional image with a light spot on a monitor by executing a program by a CPU, wherein a three-dimensional model comprising polygons is the polygon If it is determined that it is a three-dimensional model that maps a light spot texture to the vertex position of The three-dimensional model After the perspective transformation, After perspective transformation Mapping a predetermined light spot texture to all the vertices of the polygon constituting the three-dimensional model, respectively (invention according to claim 1).
[0018]
The recording medium of the present invention is a recording medium on which a program executed by the CPU of an image processing apparatus that displays a three-dimensional image with a light spot on a monitor is recorded. Are determined to be a three-dimensional model for mapping a light spot texture to the vertex position of the polygon, and if it is determined to be a three-dimensional model for mapping a light spot texture, The three-dimensional model After the perspective transformation, After perspective transformation A program for executing a step of mapping a predetermined light spot texture to all vertices of a polygon constituting the three-dimensional model is recorded (the invention according to claim 3).
[0019]
The program according to the present invention is a program executed by a CPU of an image processing apparatus that displays a three-dimensional image with a light spot on a monitor, wherein a three-dimensional model composed of polygons is displayed on the CPU by the vertex positions of the polygons. If it is determined that it is a three-dimensional model for mapping a light spot texture, and if it is determined to be a three-dimensional model for mapping a light spot texture, The three-dimensional model After the perspective transformation, After perspective transformation And a step of mapping a predetermined light spot texture to all the vertices of the polygon constituting the three-dimensional model (the invention according to claim 5).
[0020]
The image processing apparatus according to the present invention is an image processing apparatus for displaying a three-dimensional image with a light spot on a monitor by executing a program by a CPU, wherein a three-dimensional model composed of polygons is positioned at the vertex positions of the polygons. When it is determined that it is a three-dimensional model for mapping the light spot texture, and when it is determined that it is a three-dimensional model for mapping the light spot texture, The three-dimensional model After the perspective transformation, After perspective transformation And a means for mapping a predetermined light spot texture to all vertices of the polygon constituting the three-dimensional model (the invention according to claim 7).
[0021]
According to the present invention, it is possible to specify that the texture is arranged (drawn) at each vertex of each polygon constituting the 3D model, so that the texture can be automatically mapped on the 3D model.
[0022]
In the present invention, the three-dimensional model designation step (means) and the texture designation step (means) specify, for example, a texture mapping for one type of texture or for all three-dimensional models on the screen. When doing so, the order can be changed.
[0023]
In the present invention, the texture color, transparency, etc. can be automatically designated by designating the attribute of the texture color to be arranged at each vertex.
[0024]
By designating the color, the texture is not limited to the light spot, and it is possible to map various textures such as cloud clouds, leaves of trees, fluff of dandelions, and the like.
[0025]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the accompanying drawings.
[0026]
FIG. 1 shows a schematic appearance of a program execution / development system 10 to which an embodiment of the present invention is applied.
[0027]
The program execution / development system 10 is a program execution / development apparatus (including both functions of a program execution apparatus and a program development apparatus) that is a main body that can also be used as an entertainment apparatus having a function of executing various programs. 12, a memory card 14 that is a card-type external storage device (external memory) that is detachable from the program execution / development apparatus 12, and a connector 15 that is detachable from the program execution / development apparatus 12. Output from the operation device (controller) 16, the keyboard 52 and mouse 56 that are input devices for data input, designation input, command input, etc., the color printer 54 that is an image output device, and the program execution / development device 12. This is a color display that is supplied with video and audio signals. Consisting essentially of from 18 other Metropolitan.
[0028]
As shown in FIG. 1, the program execution / development apparatus 12 has a shape in which flat rectangular parallelepipeds are stacked, and a disc on which an optical disc 20 as a program / data recording medium is mounted on the front panel. A disc tray 22 that can be moved back and forth as a mounting unit, a reset switch 24 for arbitrarily resetting a program currently being executed, an open button 26 for pulling out the disc tray 22, and two memory cards 14 There are disposed one insertion port 30, two controller terminals 32 into which the connector 15 of the controller 16 is inserted, a USB connector into which the keyboard 52 and the color printer 54 are inserted, and the like.
[0029]
On the rear panel side, there are disposed a power switch 28 and an AV multi-output terminal (not shown) which is an output terminal for video and audio, and is connected to the monitor 18 via an AV (audio visual) cable. The keyboard 52 is provided with a USB connector for connecting a mouse 56.
[0030]
When used as an entertainment device, the program execution / development device 12 reads the program from the optical disc 20 that is a recording medium such as a CDROM or DVDROM in which a program or data of a computer game (video game) is recorded, and executes it. In addition to the control function for displaying characters and scenes on the monitor 18, various control functions such as movie playback using a DVD (digital video disk) which is another optical disk 20 and music playback using a CDDA (compact disk digital audio) are provided. Built in. It also has a function of executing a program obtained by communication via a communication network or the like. During the execution of the program, a three-dimensional computer graphics image sequentially generated by the program execution / development device 12 is displayed on the monitor 18 as a display device.
[0031]
In this case, a signal from the controller 16 having various operation buttons and operation keys is also processed by one of the control functions of the program execution / development apparatus 12, and the content thereof is, for example, the movement of the character on the screen of the monitor 18. This is reflected in scene switching.
[0032]
Next, the internal configuration and general operation of the program execution / development system 10 shown in FIG. 1 will be described with reference to the block diagram of FIG.
[0033]
A RAM 402 and a bus 403 as semiconductor memories are connected to the CPU 401 serving as a core. A graphic synthesizer (GS) 404 and an input / output processor (IOP) 409 are connected to the bus 403, respectively. The GS 404 includes a RAM 405 including a frame buffer, a Z buffer, a texture memory, and the like, and a rendering engine 406 having a rendering function including a drawing function for the frame buffer in the RAM 405.
[0034]
A monitor 18 as an external device is connected to the GS 404 configured as described above via an encoder 407 for converting, for example, a digital RGB signal or the like into an NTSC standard television system or the like. The monitor 18 is a monitor that directly converts a digital RGB signal into a video signal when used as the program execution / development apparatus 12.
[0035]
The IOP 409 includes a driver (DRV) 410 for reproducing and decoding data recorded on the optical disc 20, a sound processor (SP) 412, a memory card 14 as an external memory including a flash memory, a controller 16, and a keyboard 52. A color printer 54, a mouse 56, a hard disk 58 on which a three-dimensional modeling tool is installed, and a ROM 416 on which an operating system or the like is recorded are connected to each other. The SP 412 is connected to a speaker 414 and a monitor 18 as external devices via an amplifier 413, and supplies an audio signal.
[0036]
Here, the memory card 14 is a card type external storage device composed of, for example, a CPU or a gate array and a flash memory, and is connected to the program execution / development device 12 shown in FIG. It is detachable. A state of the game is memorized, and a DVD playback program or the like is memorized.
[0037]
The controller 16 is for giving a command (binary command or multi-value command) input to the program execution / development apparatus 12 by pressing a plurality of buttons. The driver 410 includes a decoder for decoding an image encoded based on the MPEG (moving picture experts group) standard.
[0038]
The CPU 401 described above has a three-dimensional computer graphics coordinate calculation performance of 66 million polygons / second with a clock frequency of 300 MHz.
[0039]
The GS 404 is a parallel drawing processor with a built-in RAM (DRAM) 405, which has a clock frequency of 150 MHz, a maximum number of display colors of 32 bits (RGB and A (addition rate during semi-transparent addition) each 8 bits), hidden surface processing, and the like. Z-buffer 32 bits for automatically performing, other image processing functions such as texture mapping, alpha blending (translucent addition) function, bi-trilinear filtering function, polygon rendering performance of 75 million per second, etc. Yes.
[0040]
Next, how the 3D image is displayed on the monitor 18 by the operation of the controller 16 will be described. It is assumed that object data including polygon vertex data, texture data, and the like recorded on the optical disc 20 is read via the driver 410 and held in the RAM 402 of the CPU 401.
[0041]
When an instruction from the player who is a user is input to the program execution / development apparatus 12 via the controller 16, the CPU 401 determines the position of the object (three-dimensional object) on the three-dimensional (3D) based on the instruction, Calculate the orientation with respect to the viewpoint. As a result, the polygon vertex data of the object defined by the coordinate values of the three orthogonal axes X, Y, and Z are changed. The polygon vertex data after the change is converted into two-dimensional coordinate data by a perspective conversion process.
[0042]
A region designated by two-dimensional coordinates is a so-called polygon. The converted two-dimensional coordinate data, Z data, and texture data are supplied to the GS 404. The GS 404 performs rendering based on the converted two-dimensional coordinate data and Z data, and performs rendering processing by sequentially writing (drawing) texture data on a RAM 405 (in this case, a frame buffer) as a memory. The texture data to be drawn is supplied to the monitor 18 after the image for one frame completed by the drawing process is encoded by the encoder 407, and is displayed as an image on the screen.
[0043]
Next, FIG. 3 shows a personal computer (PC) 900 installed with a 3D modeling tool.
[0044]
The PC 900 includes a CPU 902 as a control unit, a ROM 904 as a memory, a RAM 906 as a memory, a hard disk drive 908 as a memory (also referred to as a hard disk 908 because it becomes complicated), a CD drive (CDD) 910 for reading a CDROM and the like. , A main body 914 having a DVD drive (DVDD) 912 for reading a DVDROM and the like, a monitor 916 connected to the main body 914, a keyboard 918, a mouse 920, and a color printer 922.
[0045]
Here, as the 3D modeling tool installed in the hard disk 908, software such as the product name “MAYA” manufactured by Wavefront (Wavefront), which is widely used, can be used.
[0046]
That is, the 3D modeling tool has a function of generating a solid figure using a mouse 920, a keyboard 918, and the like, a wire frame display function, a camera setting function, a rendering function, and the like, and easily generates a 3D model as an object. be able to.
[0047]
In general, a 3D model (3D model data) such as a character object or a building object is created by a designer using the PC 900, and the created 3D model (3D model data) or the like is used. The programmer uses the program execution / development system 10 and, if necessary, the PC 900 to complete the game program and the like. The three-dimensional model data created by the PC 900 is converted into data on the program execution / development system 10 on the PC 900, and is recorded on the program execution / development apparatus 12 by a recording medium (such as the optical disk 20, eg, CDR, DVDRAM). Or via a network. The PC 900 and the program execution / development system 10 can be connected to a network via a LAN.
[0048]
The program execution / development system 10 and the PC 900 according to this embodiment are basically configured and operate as described above. Next, the texture mapping function will be described with reference to the flowchart of FIG. explain. In this embodiment, the light spot texture mapping function will be described. However, the texture is not limited to the light spot texture by appropriately setting the color (RGB value), transparency, etc., but the cloud lump texture, the leaf texture, and It can be applied to any kind of texture mapping, such as dandelion fluff texture.
[0049]
In the texture mapping function described below, steps S12, S13, S14, S15, and S21 can be stored in the hard disk 58 as a library that is a versatile program.
[0050]
First, in step S11, a desired 3D model (3D model data) is generated using the PC 900. FIG. 5 schematically shows the created 3D model (wireframe model) 100.
[0051]
The 3D model 100 includes a building model 106 with a parasol model 104 attached to the tip of a columnar model 102, a building model 112 composed of a lower columnar model 108 and an upper columnar model 110, a road model 114, a tail lamp model. A vehicle model 118 with 116, a road illumination lamp model 124 including a pole model 120 and a light model 122, and a triangular pillar-shaped building model 126 are included. The vertex coordinates (x, y, z) of each polygon constituted by the wire frame in the 3D model 100 are automatically generated by the 3D modeling tool.
[0052]
Next, in step S12, a plurality of types of light spot textures are generated by the PC 900 or the program execution / development apparatus 12. Here, it is assumed that the light spot texture is generated by the program execution / development apparatus 12.
[0053]
FIG. 6 is a schematic diagram of various generated light spot textures. As can be understood from FIG. 6, here, each of the four sizes (sizes b1, b2, b3, b4) and the shapes are circular, diamond, and star (shapes a1, a2, a3). The light spot textures 131 to 142 are generated and stored as a light spot texture table (texture storage means) 144 in a predetermined area of the hard disk 58 as shown in FIG.
[0054]
Next, in step S13, a 3D model for light spot texture mapping (setting) is generated or designated. That is, in this step S13, a 3D model for which a texture is to be arranged (drawn or mapped) at the vertex of each polygon is designated.
[0055]
In this case, a schematic diagram of the 3D model 100 shown in FIG. 5 and the light spot texture table 144 shown in FIG. 6 is displayed on the screen of the monitor 18. In step S13, the columnar model 102, the parasol model 104, the building model 106, the lower columnar model 108, the upper columnar model 110, the building model 112, and the road model, which are models constituting the 3D model 100, are used. 114, tail lamp model 116, car model 118, pole model 120, light model 122, road illumination lamp model 124, and building model 126, a 3D model (reference numeral) for which a light spot texture is to be added to each vertex of a polygon constituting each model Is designated as MA) by a click operation of the mouse 56 or the like. That is, when a mouse cursor (not shown) is placed on the desired 3D model MA and the mouse 56 is left-clicked, the color of only the 3D model MA changes from black to green, for example.
[0056]
Since the 3D model MA set to green is a 3D model for which a light spot texture is to be added to the vertices of each configured polygon, it can be recognized at a glance on the screen.
[0057]
Of course, by selecting a menu, it is also possible to perform batch designation of attaching light spot textures to the vertices of all polygons constituting all 3D models constituting the 3D model 100.
[0058]
FIG. 8 shows an image 153 on the monitor 18 after designating a 3D model in which a texture is to be arranged at the vertex of each polygon.
[0059]
In this embodiment, a model indicated by a dotted line in FIG. 8, that is, among the above-described models constituting the 3D model 100, the parasol model 104, the upper columnar model 110, the tail lamp model 116, the light model 122, and the building model. Reference numeral 126 denotes a 3D model MA for light spot texture mapping designated by clicking with the mouse 56. This 3D model MA is displayed in green.
[0060]
On the other hand, the models indicated by the remaining solid lines, that is, the columnar model 102, the lower columnar model 108, the road model 114, the car model 118, and the pole model 120 are not designated as the 3D model MA for light spot texture mapping. Model (if the code is MB, it can be schematically represented as 100 = MA + MB). The 3D model MB is displayed in black.
[0061]
That is, in the image 153 on the screen of the monitor 18, the 3D model MA indicated by the dotted line in which the light spot textures 131 to 142 are arranged (mapped) at the vertex is green, and the light spot texture indicated by the solid line is not mapped. MB is displayed in black or the like. This display can be similarly performed on the monitor 916 in the PC 900.
[0062]
Further, in FIG. 8, the left pyramid-shaped building model 128 of the two building models 126 and 128 is newly generated in step S13, and the light spot texture mapping for which the light spot texture mapping is designated. 3D model MA is shown. Note that functions such as copying of the 3D model are installed in the hard disk 58 of the program execution / development apparatus 12 and can be performed by the program execution / development apparatus 12.
[0063]
As described above, in step S13, the light spot texture mapping 3D model MA is newly generated, or the light spot texture mapping 3D model MA is designated for the already generated 3D model 100. Is possible.
[0064]
The designated light spot texture mapping 3D model MA is recorded as a 3D model designation table 146 in a predetermined area of the hard disk 58, as shown in FIG. That is, the 3D model designation table 146 is data that indicates which polygon vertices constituting the 3D model 100 are to be mapped with the texture. Note that various data in the hard disk 58 are transferred to the RAM 402 and RAM 405 according to the progress of the game.
[0065]
Next, in step S14, the light spot texture mapping 3D model MA (the parasol model 104, the upper columnar model 110, the tail lamp model 116, the light model 122, the building models 126, 128 recorded in the 3D model designation table 146 is displayed. ), Attributes such as color (RGB value) and transparency of the light spot textures 131 to 142 to be attached to the vertices of the polygons constituting the 3D model MA (the parasol model 104, the upper columnar model 110, the tail lamp). The model 116, the light model 122, and the building models 126 and 128) are designated. Of course, the same attributes (color, transparency, etc.) can be specified collectively for the light spot texture mapping 3D model MA recorded in the 3D model specification table 146.
[0066]
The correspondence between the attribute specified in this way and the 3D model MA for light spot texture mapping is recorded in the attribute table 148 in a predetermined area of the hard disk 58. That is, the attribute table 148 is a table as data for designating the color and transparency of the texture to be placed at each vertex of each polygon constituting the designated 3D model MA.
[0067]
Next, in step S15, with reference to the light spot texture table 144, the light spot texture mapping 3D model MA (the parasol model 104, the upper columnar model 110, the tail lamp model 116, recorded in the 3D model designation table 146, The type ST of the light spot textures 131 to 142 to be attached to each vertex of each polygon constituting the light model 122 and the building models 126 and 128) is designated. Designation of the type ST of the light spot textures 131 to 142 can be performed by designating the shapes ai = a1 to a3 and the sizes bj = b1 to b4 shown in FIG. 6, but in practice this designation is shown in FIG. It can be performed by clicking a desired light spot texture among the light spot textures 131 to 142 displayed on the screen based on the light spot texture table 144 shown. The type ST can be represented by ST (ai, bj).
[0068]
Also in this case, by selecting a desired one light spot texture by default from the light spot textures 131 to 142, by using this default light spot texture, each 3D for light spot texture mapping is used. One desired light spot texture among the light spot textures 131 to 142 can be designated collectively for the model. In other words, it is not necessary to individually specify the light spot texture for each 3D model for light spot texture mapping.
[0069]
The correspondence relationship between the designated light spot texture mapping 3D model MA and the types ST of the light spot textures 131 to 141 to be added is recorded in the texture designation table 150 in a predetermined area of the hard disk 58 (see FIG. 7).
[0070]
After the preparatory process in steps S11 to S14 described above, the 3D model is subjected to perspective projection conversion. 3 The process of mapping the designated texture to each vertex of each polygon constituting the D model, that is, “designating the specified texture with reference to the vertex coordinates and attributes of each polygon constituting the designated 3D model” in step S21 shown in FIG. The CPU 401 and the GS 404 execute the texture mapping program “Paste”. The texture mapping program in step S21 can be used as a library by the program execution / development apparatus 12.
[0071]
By executing this program, the CPU 401 and the GS 404 of the program execution / development apparatus 12 that also functions as an entertainment apparatus allow the light spot texture in the hard disk 58 (the RAM 402 and the RAM 405 read and written from the hard disk 58 at this time). A rendering process is performed by the rendering engine 406 with reference to the table 144, the 3D model designation table 146, the attribute table 148, and the texture designation table 150, and a 3D image 154 that is a 3D solid model with a light spot as shown in FIG. Are drawn in the frame buffer in the RAM 405.
[0072]
The three-dimensional image 154 drawn in the frame buffer is converted into a video signal through the encoder 407 and displayed on the monitor 18 as an image (the code is the same 154).
[0073]
On the three-dimensional image 154 shown in FIG. 10, the 3D model specified in steps S13 to S15 {light spot texture mapping 3D model MA (parasol model 104, upper column model 110, tail lamp model 116, light model 122, The designated texture is displayed in the designated color and transparency at the vertex position of each polygon constituting the building model 126, 128)}.
[0074]
The three-dimensional image 154 shown in FIG. 10, the three-dimensional image shown in FIG. 5, and the three-dimensional image 153 shown in FIG. 8 can also be confirmed by outputting them as a color hard copy from the color printer 54 by still image capture. .
[0075]
In the actual game program read from the optical disc 20, an instruction list of screens to be displayed on the monitor 18 in the next frame, a so-called display list, is generated one after another by the CPU 401 and supplied to the GS 404.
[0076]
Here, as shown in the flowchart of FIG. 11, first, in step S31, the CPU 401 determines whether or not the instruction in step S21 is included in the display list. Instructs the GS 404 to refer to the texture designation table 150 (the table in which the correspondence between the designated light spot texture mapping 3D model MA and the light spot texture ST to be added is designated) in the process of step S32. .
[0077]
At this time, the 3D model 100 after perspective projection conversion shown in FIG. 5 is stored as data in the RAM 405 (see FIG. 7).
[0078]
Next, in step S33, the GS 404 refers to the light spot texture table 144 in order to draw the light spot textures 131 to 142 corresponding to the types ST of the light spot textures 131 to 142. At this time, the light spot textures 131 to 142 of the light spot texture table 144 are expanded in the RAM 405. At the same time, the GS 404 refers to the attribute table 148 to know the color and transparency.
[0079]
In step S34, the 3D model 100 drawn in the RAM 405 is referred to. In step S35, each of the 3D models MA for light spot texture mapping specified in the 3D model specification table 146 in the 3D model 100 is displayed. The texture mapping process according to this embodiment, in which the designated light spot textures 131 to 142 are mapped to each vertex of the polygon with the designated color and transparency, is automatically performed, and the rendering process is completed.
[0080]
FIG. 10 shows a screen display on the monitor 18 after such rendering processing.
[0081]
As described above, according to this embodiment, the 3D model 100 is created on the 3D modeling tool installed in the PC 900, and a desired texture in the 3D model 100 is created by the program execution / development apparatus 12. By generating a texture mapping table that is to be mapped to the vertices of each of the polygons that are formed, the coordinates and attributes of the light spot can be set visually and easily.
[0082]
That is, the program execution / development apparatus 12 automatically selects and designates a desired 3D model for which texture mapping is to be performed on the vertex of the polygon, so that the texture mapping to each vertex of each polygon constituting the 3D model MA is automatically performed. For example, it is possible to specify the coordinates and attributes of light spots in units of tens of thousands on a single frame screen, such as the night view of the city, the earth and other stars, and the city as seen from the spaceship. It is extremely suitable when applied to a night view of amusement park, a combination of night view and fireworks.
[0083]
Further, according to the embodiment described above, after the 3D model specifying step (3D model specifying means) S13 specifies the 3D model MA for which the texture is to be arranged at the vertex of each polygon, the texture specifying step (texture specifying means) ) In S15, the texture to be arranged at each designated vertex is designated. Further, in the texture mapping step (texture mapping means) S21, the designated texture is mapped to each vertex of each polygon after the designated 3D model MA is subjected to perspective projection conversion. In the texture designation step (texture designation means) S15, the texture color attribute can be designated (step S14).
[0084]
By processing in this way, it is possible to specify that a texture is arranged (drawn) at each vertex of each polygon constituting the 3D model MA, so that a huge number of textures can be mapped on the 3D model 100 very easily. be able to.
[0085]
Furthermore, according to the above-described embodiment, it is confirmed whether or not the 3D model designation table 146 that is data instructing whether or not the texture is mapped to each vertex of each polygon constituting the three-dimensional model 100 is included. If it is determined in step (steps S31, S32) and after this confirmation that the data to be instructed is included, the texture is mapped to each vertex of each polygon after the perspective projection conversion of the corresponding 3D model MA Steps (S32 to S35). By recording such a program on the optical disk 20 as a recording medium, a huge number of textures can be mapped on the 3D model 100 very easily.
[0086]
In addition, this invention is not restricted to the above-mentioned embodiment, Of course, it can take various structures, without deviating from the summary of this invention.
[0087]
【The invention's effect】
As described above, according to the present invention, it is possible to specify that a texture is mapped to each vertex of each polygon constituting the 3D model. By this designation, the texture can be easily mapped on the 3D model.
[0088]
That is, according to the present invention, a texture such as a light spot can be mapped on the 3D model very easily.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of a program execution / development system to which an embodiment of the present invention is applied.
FIG. 2 is a block diagram of a program execution / development system.
FIG. 3 is a configuration diagram of a personal computer on which a 3D modeling tool is installed.
FIG. 4 is a flowchart for explaining the texture mapping operation;
FIG. 5 is a schematic diagram of a 3D wire frame model.
FIG. 6 is an explanatory diagram of a light spot texture table.
FIG. 7 is an explanatory diagram of various tables recorded on the hard disk.
FIG. 8 is an explanatory diagram of a 3D model for which texture mapping is designated.
FIG. 9 is an explanatory diagram showing the contents of a texture mapping program.
FIG. 10 is a schematic diagram of a solid 3D model subjected to texture mapping.
FIG. 11 is a flowchart for explaining an operation of texture mapping to each vertex of each polygon of a designated 3D model.
FIG. 12 is a flowchart for explaining a conventional technique.
[Explanation of symbols]
10 ... Program execution / development system 12 ... Program execution / development device
16 ... Operating device (controller) 18 ... Monitor
20 ... Optical disc 52 ... Keyboard
54 ... Color printer 56 ... Mouse
58 ... Hard disk
100 ... 3D model (wireframe model)
102 ... Columnar model 104 ... Parasol model
106, 112, 126, 128 ... building model
108 ... Lower column model 110 ... Upper column model
114 ... Road model 116 ... Tail lamp model
120 ... Pole model 122 ... Light model
124 ... Road lighting lamp model 131-142 ... Light spot texture
144 ... Light spot texture table 146 ... 3D model designation table
148 ... attribute table 150 ... texture designation table
401 ... CPU 402, 405 ... RAM
404 ... GS 406 ... Rendering engine
409 ... IOP 900 ... Personal computer
908: Hard disk

Claims (8)

A texture mapping method in an image processing apparatus for displaying a three-dimensional image with a light spot on a monitor by executing a program by a CPU,
Determining whether the three-dimensional model composed of polygons is a three-dimensional model that maps light spot textures to the vertex positions of the polygons;
If it is determined that it is the three-dimensional model that maps a point texture, after perspective transformation of the three-dimensional model, a predetermined spot texture to all vertices of the polygons constituting the three-dimensional model after perspective transformation A texture mapping method comprising: mapping each of the steps. The texture mapping method according to claim 1,
In the determining step, it is further determined which light spot texture is selected and mapped among the plurality of light spot textures prepared in advance,
In the mapping step, the selected light spot texture is mapped as the predetermined light spot texture. A recording medium on which a program executed by a CPU of an image processing apparatus that displays a three-dimensional image with a light spot on a monitor is recorded,
In the CPU,
Determining whether the three-dimensional model composed of polygons is a three-dimensional model that maps light spot textures to the vertex positions of the polygons;
If it is determined that it is the three-dimensional model that maps a point texture, after perspective transformation of the three-dimensional model, a predetermined spot texture to all vertices of the polygons constituting the three-dimensional model after perspective transformation A CPU-readable recording medium having recorded thereon a program for executing the mapping step. The recording medium according to claim 3,
In the determining step, it is further determined which light spot texture is selected and mapped among the plurality of light spot textures prepared in advance,
In the mapping step, the selected light spot texture is mapped as the predetermined light spot texture. A program executed by a CPU of an image processing apparatus that displays a three-dimensional image with a light spot on a monitor,
In the CPU,
Determining whether the three-dimensional model composed of polygons is a three-dimensional model that maps light spot textures to the vertex positions of the polygons;
If it is determined that it is the three-dimensional model that maps a point texture, after perspective transformation of the three-dimensional model, a predetermined spot texture to all vertices of the polygons constituting the three-dimensional model after perspective transformation A program for executing the mapping step. The program according to claim 5,
In the determining step, it is further determined which light spot texture is selected and mapped among the plurality of light spot textures prepared in advance,
In the mapping step, the selected light spot texture is mapped as the predetermined light spot texture. An image processing apparatus that displays a three-dimensional image with a light spot on a monitor by executing a program by a CPU,
Means for determining whether or not the three-dimensional model made of polygons is a three-dimensional model that maps light spot textures to vertex positions of the polygons;
If it is determined that it is the three-dimensional model that maps a point texture, after perspective transformation of the three-dimensional model, a predetermined spot texture to all vertices of the polygons constituting the three-dimensional model after perspective transformation An image processing apparatus comprising: a mapping unit. The image processing apparatus according to claim 7.
The discriminating means further discriminates which light spot texture to select and map among a plurality of light spot textures prepared in advance,
The image processing apparatus, wherein the mapping means maps the selected light spot texture as the predetermined light spot texture.

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