JP2000207579A - Device and method for 3d simulation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a plotted image to be displayed have more presence by calculating a linear distance between a viewpoint on virtual 3D space and a mobile body, deciding the detailed degree of the plotting of the mobile body to be displayed on a display in accordance with the distance and plotting the mobile object. SOLUTION: When a CPU 10 reads the position information of all vehicles stored in a RAM 12, it converts the position information of all of the vehicles into a relative coordinates system with the viewpoint (camera) of a certain position as an origin. Next, about a vehicle to be displayed, it calculates a linear distance between the vehicle and a player at a reference point on the basis of a position in the relative coordinates system and discriminates which zone the vehicle of a display object exists in by comparing the obtained distance with threshold. Subsequently, the CPU 10 decides the size of the vehicle to be displayed and the detailed degree of plotting while corresponding to the discriminated zone, performs plotting about the vehicle to be displayed on the RAM 12 and then transfers a plotted image to a display 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a moving object moving on a virtual 3D (three-dimensional space) traveling path, for example, a four-wheeled vehicle or a two-wheeled vehicle. The present invention relates to a 3D simulation apparatus and method for displaying.

[0002]

2. Description of the Related Art Conventionally, in a game device, a moving state in which a plurality of four-wheeled vehicles or two-wheeled vehicles (hereinafter, referred to as vehicles) moves on a traveling path is displayed in a simulated manner, and one of the plurality of vehicles is played. It offers a simulation game in which a player moves manually to compete for time or compete with other vehicles.

In order to simulate the moving state of a vehicle and display a visual field viewed from a vehicle operated by a player or a predetermined fixed position (generally referred to as a viewpoint), a computer (CPU) in the game device is displayed. 3D simulation device) receives information input by a player's operation (operation relating to a traveling direction and a vehicle speed). Also,
The movement of other vehicles is controlled in the virtual 3D space, and vehicles existing near the vehicle operated by the player are displayed on the display screen as shown in FIG.

An image used for display is created by a drawing function of a computer. A vehicle that is in front of a vehicle operated by an operator (including a driver depending on the vehicle configuration) in order to give a sense of reality as 3D is drawn and displayed on a display screen so as to be smaller than a vehicle operated by the operator. I do.

[0005]

The size of the vehicle in front for display depends on the depth in front as seen from the viewpoint (camera). More specifically, on the traveling path in the virtual 3D space, when the viewpoint is indicated by reference numeral 1 and other vehicles controlled by the computer are indicated by reference numerals 2 to 4 in FIG. The display size of another vehicle is determined in proportion to the depth. Normally, distance R1, distance R2
Are provided, the computer determines which zone the vehicle is in, and determines the size and detail of the vehicle to be displayed.

When the size and the degree of detail of the vehicle to be displayed are determined based only on such a depth, FIG.
Although the vehicle 3 and the vehicle 4 have substantially the same linear distance between the vehicle operated by the player and the vehicle 3, since the vehicle 3 exists in a near zone, the vehicle 3 is displayed in large size and in detail.

[0007] For this reason, there is a problem to be solved in that since the degree of detail at the center of the display that the player pays attention to is low, the actually displayed drawing image seems strange.

In view of the above, an object of the present invention is to provide a 3D simulation apparatus and a 3D simulation method in which a drawn image displayed on a display screen has a more realistic feeling.

[0009]

In order to achieve the above object, according to a first aspect of the present invention, a plurality of moving bodies move on a traveling path in a virtual 3D space, and In a 3D simulation apparatus which manually controls a moving state of a specific moving body and simulates a visual field when viewed from a viewpoint at an arbitrary position on a display, the viewpoint and the moving body in the virtual 3D space are provided. Calculating means for calculating a linear distance between the information processing means, information processing means for determining the degree of detail of the drawing of the moving object to be displayed on the display according to the distance calculated by the calculating means, Image processing means for drawing the moving object to be displayed according to the degree of detail.

[0010] The second aspect of the present invention provides the 3D image processing apparatus according to the first aspect.
In the simulation device, the information processing means includes:
Starting from the viewpoint, a plurality of zones corresponding to the distances are prepared, and the degree of detail of the drawing of the moving object is determined by determining whether the moving object to be displayed is located in any of the plurality of zones. It is characterized by doing.

According to a third aspect of the present invention, there is provided the 3D image processing apparatus according to the second aspect.
In the simulation device, when a predetermined number or more moving objects are present in the same zone, the information processing means gives a high degree of detail regarding the drawing to the predetermined number of moving objects close to the viewpoint. The other mobile units in the same zone are given a low level of detail.

According to a fourth aspect of the present invention, a plurality of moving bodies move on a traveling path in a virtual 3D space, and a moving state of a specific moving body is manually controlled from the viewpoint. In a 3D simulation method of simulating a visual field of view on a display, a calculation step of calculating a linear distance between the viewpoint and a moving body in the virtual 3D space, An information processing step of determining the detail level of the drawing of the moving object to be displayed on the display according to the calculated distance; and an image processing step of drawing the moving object to be displayed according to the determined detail level It is characterized by having.

According to a fifth aspect of the present invention, there is provided the 3D image processing apparatus according to the fourth aspect.
In the simulation method, in the information processing step, a plurality of zones corresponding to the distances are prepared from the viewpoint as a starting point, and it is determined whether the moving object to be displayed is located in any of the plurality of zones. It is characterized in that the degree of detail of the drawing of the moving object is determined.

According to a sixth aspect of the present invention, there is provided a 3D image processing apparatus according to the fifth aspect.
In the simulation method, when a predetermined number or more moving objects are present in the same zone, in the information processing step, a high degree of detail is given to the drawing for the predetermined number of moving objects close to the viewpoint. The other mobile units in the same zone are given a low level of detail.

According to a seventh aspect of the present invention, a plurality of moving objects move in the virtual 3D space, and a moving state of a specific moving object among the plurality of moving objects is manually controlled, and a viewpoint from an arbitrary position is determined. In a 3D simulation apparatus that simulates a visual field of view on a display, a first distance is calculated between the viewpoint and another object displayed on a display screen.
Calculation means, and second calculation means for calculating a relative moving speed of an object displayed on the display screen with respect to the viewpoint,
Information processing means for determining the detail of drawing of an object to be displayed on the display screen based on the distance calculated by the first calculation means and the relative speed calculated by the second calculation means; Image processing means for drawing the other object in accordance with the determined degree of detail.

According to an eighth aspect of the present invention, a plurality of moving objects move in a virtual 3D space, and a moving state of a specific moving object among the plurality of moving objects is manually controlled, and the moving state is controlled from an arbitrary position viewpoint. In a 3D simulation method for simulating a visual field of view on a display, a first calculation step of calculating a distance between the viewpoint and an object to be displayed on a display screen, and the display screen for the viewpoint A second calculation step of calculating a relative movement speed of the object displayed above, and the display screen based on the distance calculated by the first calculation step and the relative speed calculated by the second calculation step. An information processing step of determining the detail level of the drawing of the display of the object to be displayed and an image processing step of drawing the other object in accordance with the determined detail level are provided. Characterized in that was.

[0017]

Embodiments of the present invention will be described below in detail with reference to the drawings.

Although the contents of software of the 3D simulation device used in the game device are different from those of the conventional device, the hardware configuration can be the same as that of the conventional device. For this reason,
The description of the hardware configuration will be briefly described. FIG. 1 shows a system configuration of the 3D simulation apparatus.

In FIG. 1, a CPU 10, a ROM 11,
The RAM 12, the display 13, and the input device 14 are connected to the bus. In accordance with the game program stored in the ROM 11, the CPU 10 receives information input from the input device 14, that is, information relating to the movement of the vehicle operated by the player. Further, according to the game program, the CPU 10 moves a plurality of vehicles on a traveling path in the virtual 3D space, and positions and moves a vehicle operated by a player (hereinafter, abbreviated as a player's vehicle) and other vehicles. The direction is stored in the RAM 12 and an image to be displayed on the display 14 is created based on the information.

The ROM 11 stores and stores the game program as well as shape data for drawing a vehicle to be displayed. As described above, the RAM 12 stores the data on the positions, speeds, and moving directions of the vehicle of the operator and the plurality of vehicles controlled by the CPU 10 on the traveling road, and various other data for playing the game. An image to be displayed is also created on the RAM 12. Note that a RAM dedicated to drawing may be separately provided.

The display 13 displays the created image. The input device 14 has a steering wheel, an accelerator pedal, a brake pedal, and the like, instructs a moving direction of the player's vehicle by operating the steering wheel, and controls a speed of the player's vehicle by the accelerator pedal and the brake pedal. The information input by these devices is
10 is input.

FIG. 2 shows the contents of the image creation processing (drawing processing) according to the present invention. The processing procedure shown in FIG. 2 is actually executed in the form of a program language executable by the CPU 10.
It is stored in OM11. In the present embodiment, a ROM is used as a storage medium for a program, but a hard disk storage device may be used. Further, the program may be mounted (installed) from a floppy disk or CDROM to a RAM or a hard disk storage device in the 3D simulation apparatus.

Referring to FIG. 2, an image forming process according to the embodiment of the present invention will be described.

Note that, as in the conventional case, the player's vehicle and the CP
It is assumed that the above information such as the moving positions of a plurality of vehicles controlled by U10 is constantly updated during the progress of the game. C
The PU 10 executes the processing procedure of FIG. When reading the position information of all vehicles stored in the RAM 12, the CPU 10 converts the position information of all vehicles into a relative coordinate system starting from a viewpoint (camera) at a certain position (step S10).

Next, a vehicle which is out of the image range shown in the field of view of the camera is detected. This detection is performed in step S
From the relative coordinates acquired in step 10, it can be easily performed by a known technique. Since the detected vehicle is not displayed, it is excluded from the list of vehicles to be displayed (step S20).

The CPU 10 calculates the linear distance between the reference point and the player's vehicle based on the position of the vehicle to be displayed in the relative coordinate system.

By comparing the obtained distance with threshold values R1, R2, and R3 as shown in FIG. 3B, it is determined in which zone of Z1 to Z3 the vehicle to be displayed is located. Subsequently, the CPU 10 determines the size of the vehicle to be displayed and the detail level of the drawing in association with the determined zone. Note that the size of the vehicle depends on the distance in the depth direction (step S30).

To what extent the drawing is made in accordance with the zone in which the vehicle is located is determined based on a table prepared in the ROM 11 in advance. More specifically, since the drawing data according to the degree of detail is described in the table, when the zone where the vehicle exists is determined, 3D drawing data for drawing corresponding to the zone is obtained. Can be Note that the size is uniquely determined according to the distance in the depth direction from the camera, so a detailed description will not be required.

Using this drawing data, drawing is performed corresponding to the relative coordinate position of the vehicle to be displayed. Accordingly, an image of the back of the vehicle is drawn for a vehicle located in front of the viewpoint (camera), and an image viewed obliquely (see FIG. 4) is drawn for a vehicle located diagonally forward. In connection with the drawing of the vehicle, an image of the traveling road and an image of the background are also drawn. However, since the image processing for this drawing may be the same as the conventional processing, detailed description is omitted. I do.

When the vehicle to be displayed is drawn on the RAM 12, the CPU 10 transfers the drawn image to the display 13 (step S60).

If the above processing is repeated in a very short cycle, the vehicle near the vehicle controlled by the player is displayed in large size and in detail, so that it is as if the player Is given to the player as if he / she is driving, and the level of detail at the center of the display of the player's attention is increased, so that the player does not feel strange as in the prior art.

(Other Embodiments) In the above embodiment, the degree of detail of the drawing of another moving object is determined according to the distance between a specific moving object and another moving object. A description will be given of a method of determining the level of detail of a drawing in which the degree of influence of the relative speed of a specific moving object with respect to another moving object is added to this embodiment.

Even if the distance between a specific moving object and another moving object is the same, as the relative moving speed of the other object on the display screen increases, the details of the other object are not perceived by the player who is watching the display screen. . FIG. 6 shows a drawing processing procedure executed in the present embodiment.

In this embodiment, there is provided a two-dimensional table in which the distance between a specific moving object and another object, the relative speed and the degree of detail of the drawing of the other object are determined. It is assumed that drawing data corresponding to the level of detail is described in a description column of a table corresponding to each parameter value, and this table is stored in the ROM 11.

The CPU 10 calculates the relative coordinates (distance) on the screen between the specific object (viewpoint) and another object with respect to the specific moving object having the camera viewpoint, that is, the moving object or the object constituting the background. At the same time, the relative speed is calculated (step S110). The relative speed is obtained by a simple formula of distance / time from the difference between the relative coordinates of the previous other object and the current relative coordinates, and the difference between the previous calculation time and the current calculation time.

In the case of a game in which a moving object has a parameter of an absolute moving speed (moving speed of virtually traveling on the ground). A relative speed is obtained from the absolute moving speed and converted into a relative moving speed on the display screen. In this case, the difference between the moving speed of the specific moving object and the moving speed of the other object is the (absolute) relative speed.

As in the above-described embodiment, objects out of the field of view are excluded from the display objects, and the drawing data of the objects to be displayed is extracted from the table. More specifically, a read address of a table corresponding to the relative speed and the relative coordinates is calculated, and the data of the read dress is extracted from the table of the ROM 11.

Thereafter, an object is drawn based on the drawing data. The above process is repeated for all the objects to be displayed to create image data for display,
Display is performed (steps S120 to S140).

By performing such processing, on the game screen as shown in FIG. 5, a specific moving object having a camera viewpoint, in this case, a vehicle close to the vehicle 21 and approaching the vehicle 21, and a distance from the vehicle 21 The closest vehicle 22 is depicted and displayed in more detail. In addition, even at the same distance, the background object 23 on the ground having a high relative movement speed on the display screen with respect to the vehicle 21 is slightly coarsely drawn and displayed.

As described above, by considering the relative moving speed on the display screen with respect to the moving object having the viewpoint,
This makes it possible to provide the player with a more realistic game screen.

The following embodiment can be carried out in addition to the above embodiment.

1) In the above embodiment, as shown in FIG. 4, a game relating to a motorcycle (two-wheeled vehicle) is shown as an example. The present invention can be applied to various moving objects traveling on a traveling path.

2) The hardware configuration shown in FIG. 1 is one embodiment, and can be modified within the scope of the concept of the present invention. For example, the CPU 10 reads out the created image created on the RAM 12 and transfers it to the display 13, but a dedicated controller for reading out the created image may be provided.

3) In the above embodiment, the parameter for determining the degree of detail of the drawn image is determined by the linear distance between the camera and the vehicle. However, when the number of vehicles located in the same zone is more than a predetermined number, Can be drawn in detail up to a predetermined number of vehicles in order from the viewpoint close to the viewpoint, and can be drawn with a lower degree of detail for vehicles exceeding the predetermined number.

In this case, the number of vehicles located in the same zone is counted by the CPU 10, and the counted number is compared with a predetermined number. If the number of counts is larger than the predetermined number, the distances of the vehicles are compared to detect vehicles having a short distance by the predetermined number. The remaining vehicles are the vehicles whose detail level is reduced.

4) In the above-described embodiment, the distance between the viewpoint (camera) and another vehicle is determined based on the relative coordinates. In this case, however, the linear distance in the virtual 3D space is calculated. Further, it goes without saying that absolute coordinates in the virtual 3D space may be used for distance calculation. Various modifications can be made in addition to the above-described embodiment. If the modification is in accordance with the technical idea of the invention described in the claims, the modification is made in the scope of the claims. Technology range.

[0047]

As described above, according to the first and fourth aspects of the present invention, the degree of detail of the drawing of the moving object to be displayed is determined according to the linear distance between the viewpoint (camera) and the moving object to be displayed. Since the determination is made, it is possible to eliminate the inconvenience that the detail at the center of the display which the player pays attention to is low, as in the related art, and to thereby make the display of the drawing more realistic.

According to the second and fifth aspects of the present invention, since the distance is divided into zones, the drawing data according to the degree of detail is not increased, and the balance between the drawing details and the amount of drawing data is preferred. be able to.

According to the third and sixth aspects of the present invention, when the number of moving bodies located in the same zone is large, the degree of detail of drawing of a predetermined number of moving bodies close to the viewpoint (camera) is high. Thus, the drawn image displayed on the display can represent a higher sense of reality. In addition, since high-detailed image generation imposes a high load on the apparatus and low-detailed image generation imposes a low load on the apparatus, the load of the entire drawing process can be reduced by increasing the number of low-detailed images.

According to the seventh and eighth aspects of the present invention, the distance and the relative speed (the relative speed or the absolute relative speed on the display screen) of the viewpoint (camera) and the object displayed on the display screen such as a moving object or a stationary object to be displayed. ), The detail of the drawing of the object to be displayed is determined, so that the problem that the detail at the center of the display that the player focuses on is low as in the past, and the display of the drawing is It can be more realistic.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a system configuration according to an embodiment of the present invention.

FIG. 2 is a flowchart illustrating a drawing processing (image processing) procedure according to the embodiment of the present invention.

FIG. 3A is an explanatory diagram for explaining a conventional drawing process, and FIG. 3B is an explanatory diagram for explaining a drawing process according to the embodiment of the present invention.

FIG. 4 is an explanatory diagram schematically showing display contents of a created image.

FIG. 5 is an explanatory diagram illustrating an example of a game display screen according to another embodiment.

FIG. 6 is a flowchart illustrating a drawing processing procedure according to another embodiment.

[Explanation of symbols]

 Reference Signs List 10 CPU 11 ROM 12 RAM 13 Display 14 Input device

Claims (8)

[Claims] 1. A plurality of moving bodies move along a traveling path in a virtual 3D space, and a moving state of a specific moving body among the plurality of moving bodies is manually controlled, and viewed from a viewpoint at an arbitrary position. In a 3D simulation apparatus that simulates a visual field of view on a display, calculating means for calculating a linear distance between the viewpoint and a moving object in the virtual 3D space, Information processing means for determining the degree of detail of the drawing of the moving object to be displayed on the display according to the distance, and image processing means for drawing the moving object to be displayed according to the determined degree of detail. 3 characterized by having
D simulation device. 2. The 3D simulation apparatus according to claim 1, wherein the information processing means prepares a plurality of zones according to a distance from the viewpoint as a starting point, and displays an object to be displayed on any of the plurality of zones. A 3D simulation apparatus characterized by determining whether or not a moving object is located, thereby determining the degree of detail of drawing of the moving object. 3. The 3D simulation apparatus according to claim 2, wherein, when a predetermined number or more of the moving objects are present in the same zone, the information processing means includes a predetermined number of moving objects close to the viewpoint. A 3D simulation apparatus characterized in that a high degree of detail is given to the moving object of the drawing with respect to the drawing, and a low level of detail is given to other moving objects in the same zone. 4. A field of view when a plurality of moving bodies move on a traveling path in a virtual 3D space, and a moving state of a specific moving body among the plurality of moving bodies is manually controlled, and viewed from the viewpoint. In a 3D simulation method of simulating the display on a display, a calculation step of calculating a linear distance between the viewpoint and a moving object in the virtual 3D space, An information processing step of determining the degree of detail of the drawing of the moving object to be displayed on the display, and an image processing step of drawing the moving object to be displayed according to the determined degree of detail. 3D simulation method characterized by the above-mentioned. 5. The 3D simulation method according to claim 4, wherein, in the information processing step, a plurality of zones corresponding to distances are prepared from the viewpoint as a starting point, and a display target is set in any one of the plurality of zones. A 3D simulation method characterized by determining whether or not a moving object is located by determining the degree of detail of drawing of the moving object. 6. The 3D simulation method according to claim 5, wherein, when a predetermined number or more of moving objects exist in the same zone, in the information processing step,
A high degree of detail is given to the drawing for a predetermined number of moving objects close to the viewpoint, and a low degree of detail is given to other moving objects in the same zone.
D simulation method. 7. A field of view when a plurality of moving objects move in a virtual 3D space, and a moving state of a specific moving object among the plurality of moving objects is manually controlled, and viewed from a viewpoint at an arbitrary position. In a 3D simulation apparatus that simulates the display on a display, a first calculation unit that calculates a distance between the viewpoint and an object displayed on a display screen, and an object displayed on the display screen with respect to the viewpoint. Second calculating means for calculating the relative moving speed of the object, and displaying the object to be displayed on the display screen based on the distance calculated by the first calculating means and the relative speed calculated by the second calculating means. 3D simulation, comprising: information processing means for determining the degree of detail of drawing of an image; and image processing means for drawing the other object in accordance with the determined degree of detail. Location. 8. A field of view when a plurality of moving objects move in a virtual 3D space, and a moving state of a specific moving object among the plurality of moving objects is manually controlled, and viewed from a viewpoint at an arbitrary position. In a 3D simulation method of simulating the display on a display, a first calculation step of calculating a distance between the viewpoint and another object displayed on the display screen; and displaying the distance on the display screen with respect to the viewpoint. A second calculation step of calculating a relative movement speed of the object to be performed; and a display of the other object based on the distance calculated by the first calculation step and the relative speed calculated by the second calculation step. An information processing step of determining the degree of detail of drawing and an image processing step of drawing an object to be displayed on the display screen according to the determined degree of detail. 3D simulation method.