JPH08166978A - Graphic processor and graphic position recognition method - Google Patents

Abstract

PURPOSE: To provided a graphic processor and a position recognition method in the device whereby the position information of the depth direction of a view is easily obtained and the operation efficiency of graphic edition is imporved. CONSTITUTION: The graphic processor consists of a central processing unit 1 processing required information, a display device 2, an input device 3 such as a mouse for imputing data of a character, etc., a main storage device 4 storing the program of an operating system etc., and a secondary storage device 5A storing data, etc. The secondary storage device 5A is provided with a mouse slit light source linkage control part 10 for visually giving the position recognition in the view depth direction by arranging a slit light source in the direction vertical to the view depth direction, a contrast adjustment control part 11, a color adjustment control part 12 and a slit width adjustment control part 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a graphic processing apparatus and a graphic position recognition method in the graphic processing apparatus.

[0002]

2. Description of the Related Art In recent years, with the design of complicated shapes, CAD
The work by is spreading, and in the three-dimensional graphics system, the operability of the CAD system is being improved by applying the graphics function.

In a three-dimensional graphics system, a CAD worker advances design by creating an object in a three-dimensional space. It is possible to determine the shape of an object such as a wire frame model, a surface model, or a solid model in a three-dimensional space during CAD design work by using a shading process. But CA
D When a worker looks at an object arranged in a three-dimensional space in a wire frame state, it is difficult to visually recognize the positional relationship in the depth direction. Also, when position information in the depth direction is needed in the operation process,
Working plane When you want to select an element that is not on the so-called work plane, you need to actually check the coordinates of the required position and enter the coordinate data, or change the work plane before operation. However, these operations have hindered improvement in efficiency of drawing editing.

A conventional graphic processing apparatus and graphic position recognition method will be described below with reference to the drawings.

FIG. 8 is a block diagram showing a conventional graphic processing apparatus. In FIG. 8, 1 is a central processing unit that processes requested information, 2 is a display device that displays windows, graphic elements, characters, etc., 3 is a keyboard, tablet, mouse that inputs data such as characters, numerical values, and positions. An input device such as 3a, 4 is a main storage device that stores programs such as an operating system and a window system, 5 is a secondary storage device that stores a shape database, a storage area, and the like, and 6 is C
A view direction information management unit having view direction information indicating from which direction the AD operator is looking at each element in the three-dimensional space, 7 is a shading processing unit, 8 is a luminance of each element in the shading processing. Is a brightness calculation unit for obtaining

Next, the three-dimensional drawing process in the conventional graphic processing apparatus thus configured will be described with reference to the flowchart of FIG.

First, in the view direction information management unit 6,
The view direction information indicating from which direction the drawing elements arranged in the three-dimensional space are viewed is referred to (S2).
1). Next, the brightness calculation unit 8 calculates the brightness with respect to the element visible from the view direction with respect to the shading light source for each drawing element and performs color interpolation between the elements (S2).
2). Finally, in the shading processing unit 7, for drawing on the two-dimensional display device 2 such as a display,
Two-dimensional display image data based on color information is generated for each pixel (drawing element or pixel) (S23).

As described above, in the conventional shading process, the reference point is one point of the light source, so that the three-dimensional shape of one element can be confirmed in the color arrangement state after the shading process. However, when this process is performed on some elements, it is difficult to confirm the relative positional relationship between elements in the depth direction, and the view direction must be changed to see the positional relationship. Was done.

Regarding the confirmation of the position in the depth direction, even if it is possible to change the position in the view direction, when the position coordinates are necessary or when the drawing element arranged at that position is desired to be selected, It was necessary to confirm the position and move the work plane selectable with the mouse 3a, for example.

[0010]

However, although the above-mentioned conventional device is effective for confirming the shape of a single drawing element, a complicated shape is required for a drawing created in a design drawing or the like. In order for the CAD operator to visually confirm the overall configuration formed by each element, the positional relationship of each element in the depth direction must be clear, which is not possible in the shading process in the conventional device. Was enough. In particular, in the case of a wire frame model that has not been subjected to hidden line processing, all the contours of the model are displayed with wires, so the more complicated the model, the more difficult it is to recognize the front-rear relationship in the depth direction.

The position designation in the depth direction is as follows.
There is a problem that it is necessary to select an element for moving the work plane and input coordinate data before designating the position, which hinders improvement of work efficiency in drawing editing.

The present invention solves the above-mentioned conventional problems, and provides a graphic processing device and a graphic position recognition method that can easily obtain position information in the depth direction of a view and improve the work efficiency of drawing editing. The purpose is to do.

[0013]

In order to achieve this object, a graphic processing apparatus according to claim 1 of the present invention displays a central processing unit for processing requested information, windows, graphic elements, characters and the like. Display device, input device such as keyboard, tablet, mouse, etc. for inputting data such as characters, numerical values, position, main memory device for storing programs such as operating system, window system, shape database, save area, etc. A graphic processing device comprising a secondary storage device for storing, wherein the secondary storage device arranges a slit light source in a direction perpendicular to the depth direction of a view, and a slit light source for displaying a wire. It has a configuration including a drawing control unit that visually recognizes position recognition in the view depth direction by reacting.

A graphic processing apparatus according to a second aspect is the first aspect.
In, the slit light source arrangement control unit moves the slit light source in the depth direction of the view with respect to an object that is not on the work plane that can be specified with the mouse, and recognizes the position where the wire display reacts to the slit light source. As a result, the mouse can be used to select objects that are not on the work plane and to specify the position of the view in the depth direction.

In the graphic processing device according to the third aspect, the drawing control unit specifies the slit width and the direction vector, intensity, color and intensity of the slit light source in the distance in the depth direction of the view so that the slit light source illuminates. It is configured to specify the range.

A graphic position recognition method in a graphic processing device according to claim 4 is a central processing device for processing requested information, a display device for displaying windows, graphic elements, characters, etc., and characters, numerical values, positions, etc. Figure processing consisting of input devices such as keyboard, tablet, mouse, etc. for inputting the data of main body, main memory device for storing programs such as operating system, window system, etc., and secondary memory device for storing shape database, save area, etc. The position recognition method in the apparatus is configured to visually provide position recognition in the depth direction by irradiation from a slit light source arranged in a direction perpendicular to the depth direction of the view.

[0017]

With this configuration, the position of the light source (hereinafter, referred to as a "slit light source") that emits virtual parallel rays in the direction perpendicular to the depth direction of the view is set with respect to the elements of the wire frame arranged in the three-dimensional space. Since it is movable,
By giving the operator a perspective of the wire and visually recognizing the three-dimensional positional relationship, the positional information in the depth direction of the view can be easily obtained.

[0018]

【Example】

(Embodiment 1) An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of a graphic processing device according to an embodiment of the present invention. In FIG. 1, 1 is a central processing unit, 2 is a display device, 3 is an input device, 3a is a mouse, and 4 is a main memory. An apparatus, 7 is a shading processing section, and 8 is a luminance calculation section, which are the same as those in FIG. 8 showing a conventional example, and therefore, the same reference numerals are given and the description thereof is omitted.

Reference numeral 5A denotes a secondary storage device capable of visually giving a worker position recognition in the depth direction of the view, 6A denotes a view coordinate conversion unit for converting the view coordinates, and 9A.
Is a three-dimensional rendering processing unit that generates a three-dimensional object, 1
Reference numeral 0 is a mouse / slit light source interlocking control unit as a slit light source arrangement control unit that determines the arrangement of the slit light source by interlocking with the mouse 3a, 11 is a contrast adjustment control unit that controls the brightness of the slit light source, and 12 is a slit light source. A color adjustment control unit that controls the color arrangement, and 13 is a slit width adjustment control unit that controls the setting of the slit width.
Reference numeral 13 constitutes a drawing controller.

First, the slit light source used in this embodiment will be described. FIG. 3 is an attribute explanatory diagram showing attributes of the slit light source 20 in the embodiment of the present invention. The slit light source 20 has a slit width W, a vector V (x, y, z) indicating the directionality of the slit light source, and a light source color C (r (red), g.
(Green), b (blue)), and light source intensity I (0 <I <1) are attributes. It is assumed that the slit light from the slit light source 20 is parallel light from infinity, the intensity is not attenuated by the distance, and the irradiated wire has uniform brightness.

FIG. 4 is a model state diagram in which a slit light source is added to show the state of irradiation by the slit light source 20 in one embodiment of the present invention. In FIG. 4, 20
Is a slit light source, and PT1 to PT4 are wires illuminated by the slit light source 20. The slit light source 20 defined in FIG. 4 emits light rays in the negative direction parallel to the X-axis, and irradiates the slit width defined in advance by the user, in this example, the slit width W = 1.2. ing. Wires PT1 to P irradiated by the slit light source 20
The coordinate position information of T4 can be obtained by the mouse 3a.

FIG. 2 is a flow chart showing the operation of the graphic processing apparatus in the embodiment of the present invention shown in FIG. The slit light source addition function in this apparatus will be described with reference to FIGS. 2 and 1.

First, in the three-dimensional rendering processing unit 9, the drawing target model is arranged in the three-dimensional space (S
1) Next, the mouse / slit light source interlocking control unit 10 determines whether or not the mouse / slit interlocking mode is on (S2). When the mouse / slit interlocking mode is turned on, first, the slit width, direction vector, light source color, and light source intensity information regarding the slit light source 20 prepared in advance are set as default values (S3).

The CAD operator operates the mouse 3a or the keyboard to adjust the position of the slit light source 20, the contrast between the slit light and other brightness, and the slit light source color and the slit width value to be arbitrarily set or changed. Do (S
4-S7).

Then, in the view coordinate conversion section 6A,
The CAD worker refers to the view direction information from which direction the object arranged in the three-dimensional space is viewed, and performs coordinate conversion in the three-dimensional space with the line-of-sight direction as the depth direction (Z direction) (S8). . Next, in the brightness calculation unit 8,
Using the predetermined coordinates of the slit light source 20 and the view direction information, the brightness calculation associated with the existing shading processing is performed (S9). Finally, in accordance with the final result obtained in S8 and S9, conversion processing (drawing processing) into the two-dimensional device coordinates of the drawing target is performed (S10).

If the mouse / slit interlocking mode is not turned on in S2, the process immediately goes to S8.

Next, the process of obtaining the position information in the depth direction of the view with the mouse 3a for the object subjected to the process shown in FIG. 2 will be described with reference to FIGS.

FIG. 5 is a Z coordinate change diagram showing a change in the Z coordinate when the slit light source is moved in conjunction with the mouse 3a in the embodiment of the present invention. In FIG. 5, 2
0a is the first slit light source, 20b is the slit light source after the movement, 21 is the mouse cursor indicated by an X mark, 21a is the position of the mouse point corresponding to the slit light source 20a, 21
b is the position of the mouse point corresponding to the slit light source 20b, 22 is the viewpoint, and Pa, PA, Pb, and PB are coordinate positions in the depth direction of the object located in the three-dimensional space. Figure 5
Then, as the slit light source moves from 20a to 20b, the position of the mouse point that can be confirmed from the viewpoint 22 changes from Pa to PA and from Pb to PB.

The moving function of the slit light source 20 is shown in FIG.
Assigned to buttons B1 to B3 of the mouse 3a as shown in the plan view of FIG. In FIG. 6A, B1 is a right button for moving the slit light source 20 in the + Z direction, B2 is a left button for moving the slit light source 20 in the −Z direction, and B3 is a slit light source 2.
The confirmation button assigned to confirm the Z coordinate position of 0. Further, FIG. 6B is a functional explanatory view showing a position moving function of the slit light source 20 by the mouse 3a of the graphic processing device in one embodiment of the present invention, and 31 shows a moving direction (plus moving direction) by the right button B1. , 32 is the left button B2
Shows the moving direction (minus moving direction). The CAD operator can visually confirm the movement of the slit light source 20 by using the two buttons B1 and B2.

By operating the mouse 3a of the CAD operator,
Mouse 3 on the Z coordinate of the element illuminated by the slit light source 20.
Since a is moving, the depth direction can be specified in addition to the two-dimensional specification by the mouse 3a.

Next, FIG. 7 is a flow chart of the Z coordinate determination processing in one embodiment of the present invention. The Z coordinate determination process using the mouse 3a will be described with reference to FIG. First, when the setting state of the slit light source 20 is ON, the keys for increasing / decreasing the Z coordinate value of the slit light source 20 are assigned to the buttons B1 to B3 of the mouse 3a (S11, S12). Next, the process enters a loop state until the CAD operator enters a standby state for mouse input and the Z coordinate value is determined (S13, S16).

When there is a mouse input from the CAD operator,
First, the buttons entered by the CAD operator are B1 and B.
It is determined whether it is 2 or B3 (S14, S
15, S16). When the input button is B1, the Z coordinate value of the slit light source 20 is added by 1.0 (S17), and the brightness is calculated by the processing module of the three-dimensional renderer (S).
18) Then, the process returns to S13 again to enter the mouse input standby state. When the input button is not B1 but B2, the Z coordinate value of the slit light source 20 is subtracted by 1.0 (S19), the brightness calculation process is performed (S18), and the process returns to S13 to enter the mouse input standby state. Input button is not B1 or B2 but B3
In the case of, the Z coordinate value of the slit light source 20 is confirmed (S2
0), the position information of the mouse 3a is created (S21).

If the input button is not B1, B2, or B3, the process returns to S13 to enter the mouse input standby state. That is, when the input button is B3, the Z coordinate value of the slit light source 20 is confirmed, and the process proceeds to S20.

By performing the above process and operating the position of the slit light source 20 in conjunction with the mouse 3a, the depth Z coordinate value can be determined.

As described above, in this embodiment, the position of the slit light source that emits virtual parallel rays can be moved by the mouse in the direction perpendicular to the depth direction of the view with respect to the wire frame element arranged in the three-dimensional space. By doing so, it is possible to give the worker a perspective of the wire and visually recognize the three-dimensional positional relationship, and it is possible to easily obtain position information in the depth direction of the view, which improves the work efficiency of drawing editing. Can be improved.

[0037]

As described above, according to the present invention, in the secondary storage device, the slit light source arrangement control unit for arranging the slit light source in the direction perpendicular to the depth direction of the view and the display of the wire are made to react with the slit light source. By providing a drawing control unit that visually recognizes the position in the depth direction of the view, the arrangement of the slit light source can be controlled, so that the operator can feel the perspective of the wire and visually recognize the three-dimensional positional relationship. Can be recognized and the position information in the depth direction of the view can be easily obtained, so that it is possible to realize a graphic processing device capable of improving the work efficiency of drawing editing.

Further, the slit light source arrangement control unit moves the slit light source in the depth direction of the view with the mouse with respect to the object not on the work plane that can be designated by the mouse, and the position of the wire display reacting with the slit light source. By recognizing, selecting an object not on the work plane with the mouse,
By enabling the position specification in the depth direction of the view, it is possible to recognize the three-dimensional positional relationship and easily obtain the position information in the depth direction of the view with the mouse, thus improving the work efficiency of drawing editing. It is possible to realize a graphic processing device capable of performing the above.

Further, the drawing control unit specifies the slit width, the direction vector of the slit light source, the intensity, the color, and the intensity for the distance in the depth direction of the view.
By designating the irradiation range by the slit light source, it is possible to recognize the three-dimensional positional relationship and easily obtain the position information in the depth direction of the view clearly and easily with the mouse. A graphic processing device capable of improving efficiency can be realized.

Further, the position recognition in the depth direction is visually given by irradiation from the slit light source arranged in the direction perpendicular to the depth direction of the view.
By controlling the irradiation of the slit light source, the operator can feel the perspective of the wire and visually recognize the three-dimensional positional relationship, and the position information in the depth direction of the view can be easily obtained. It is possible to realize a position recognition method in a graphic processing device that can improve the above.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a graphic processing device according to an embodiment of the present invention.

FIG. 2 is a flowchart showing the operation of the graphic processing device in the embodiment of the present invention.

FIG. 3 is an attribute explanatory diagram showing attributes of a slit light source according to an embodiment of the present invention.

FIG. 4 is a model state diagram with a slit light source added according to an embodiment of the present invention.

FIG. 5 is a Z coordinate change diagram showing a change in Z coordinate when a slit light source is moved in an embodiment of the present invention.

FIG. 6A is a plan view showing a mouse. FIG. 6B is a functional explanatory view showing a position moving function of the slit light source in the embodiment of the present invention.

FIG. 7 is a flowchart of Z coordinate determination processing according to an embodiment of the present invention.

FIG. 8 is a configuration diagram showing a conventional graphic processing device.

FIG. 9 is a flowchart showing the operation of a conventional graphic processing device.

[Explanation of symbols]

1 central processing unit 2 display device 3 input device 4 main storage device 5A secondary storage device 6A view coordinate conversion unit 7 shading processing unit 8 brightness calculation unit 9 three-dimensional rendering processing unit 10 mouse / slit light source interlocking control unit (slit light source arrangement) Control unit) 11 Contrast adjustment control unit 12 Color adjustment control unit 13 Slit width adjustment control unit

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location 9365-5H G06F 15/72 450 K

Claims (4)

[Claims] 1. A central processing unit for processing requested information, a display unit for displaying windows, graphic elements, characters, etc., and an input for a keyboard, tablet, mouse, etc. for inputting data such as characters, numerical values, positions, etc. A graphic processing device comprising a device, a main storage device that stores programs such as an operating system and a window system, and a secondary storage device that stores a shape database, a storage area, and the like,
The secondary storage device, a slit light source arrangement control unit that arranges the slit light source in a direction perpendicular to the depth direction of the view,
A graphic processing device, comprising: a drawing control unit that visually recognizes position recognition in a view depth direction by reacting a wire display with the slit light source. 2. The slit light source arrangement control unit causes the mouse to move the slit light source in the depth direction of the view with respect to an object that is not on a work plane that can be designated by the mouse, and the display of the wire is performed. The graphic processing apparatus according to claim 1, wherein by recognizing a position that reacts to the slit light source, it is possible to select an object that is not on the work plane and to specify a position in the depth direction of the view with the mouse. 3. The drawing control unit specifies the irradiation range of the slit light source by specifying the slit width and the direction vector, intensity, color and intensity of the slit light source in the distance in the depth direction of the view. The graphic processing apparatus according to claim 1, wherein: 4. A central processing unit for processing requested information, a display unit for displaying windows, graphic elements, characters, etc., and a keyboard, tablet, mouse, etc. for inputting data such as characters, numerical values, positions, etc. A position recognition method in a graphic processing device comprising a device, a main storage device for storing programs such as an operating system and a window system, and a secondary storage device for storing a shape database, a storage area, etc. A method for recognizing a figure position in a figure processing apparatus, wherein position recognition in the depth direction is visually given by irradiation from a slit light source arranged in a direction perpendicular to the direction.