JPH1091652A - Display method of figures and parts in CAD system - Google Patents

Abstract

(57) [Summary] An object of the present invention is to omit a display of a part that is not required by a user when designing a graphic or a part having a remarkable length in an arbitrary direction on a CAD system. Therefore, there is a need to provide a means for displaying the parts necessary for the work on the same screen. Kind Code: A1 A data necessary for display is generated by a clipping plane calculation section and a display section generation section and stored in a data section. Using the data, the abbreviated display processing unit 234 and the graphic / part display processing unit 236 use the display unit 220.
To be displayed. According to the present invention, when designing a graphic or a part having a remarkable length in an arbitrary direction on a CAD system,
You can work while referring to the required location on the same screen.
Further, since the values of the figures and parts are not changed, the values can be used for another purpose.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a method for displaying a figure or a part having a remarkable length in an arbitrary direction in a CAD system.

[0002]

2. Description of the Related Art In a conventional CAD system, a display magnification is changed with respect to a main screen to display all or a part of a figure or a part on the screen. In addition, a separate screen is generated, the display magnification is changed there, and the whole or a part of a figure or a part is displayed. When referring to a plurality of parts of a figure or part having a remarkable length in an arbitrary direction, a display magnification and a display position are changed each time an arbitrary part is referred to to display a target part. Japanese Patent Application Laid-Open No. 3-108066 describes a method of displaying the whole by dividing a figure.

[0003]

In the above-mentioned prior art, it is necessary to change the display magnification and the display position several times in order to display the reference portion. In addition, there is a problem that the values of the original figures and components are changed for display.

[0004] It is an object of the present invention to provide a means for displaying a plurality of parts of a graphic or part without changing the values of the original graphic or part in order to solve the above problems. This can provide an environment in which the values of figures and parts can be used as they are for other purposes.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention relates to a method for recognizing a position where display is omitted in a case of handling a graphic or part having a remarkable length in an arbitrary direction. There are provided means for omitting the display at the specified position, means for deciding the position for displaying the graphics and components not to be omitted at arbitrary intervals, and means for displaying the graphics and parts not to be omitted.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail.

FIG. 1 is a display example of a component according to the present invention. FIG. 1A is a display example of a component before the present invention is applied. When the user sets the display so as to omit the gray portion (101) of FIG. 1B, the display is performed as shown in FIG. Here, the rectangular solid (1
02) is a shape indicating that the display area is not displayed by the user. This shape is called an abbreviated display unit. The user can work while referring to a plurality of reference locations (103, 104) on the same screen.

FIG. 2 is an overall configuration diagram of a CAD system for realizing the present invention. In FIG. 2, a display unit 210 is a display device for displaying figures and components. The input unit 220 is a display unit 210 such as a mouse or a keyboard.
This is used to designate a drawing or a part to be displayed, or to designate a position or area where display is to be omitted. The processing unit 230 calculates a plane serving as a boundary of the abbreviated display and an abbreviated region from the position, the area, and the display interval designated by the input unit 220, and controls the abbreviated display unit and the graphics and components that are not to be abbreviated. I do. The processing unit 230 includes an abbreviated display area recognition unit 231, a clipping plane calculation unit 232, an abbreviated display unit generation unit 233, an abbreviated display unit display processing unit 234,
Part display position calculation unit 235, figure / part display processing unit 23
6 is comprised. The abbreviated display area recognizing unit 231 obtains an abbreviated display target area from the position or area specified by the input unit 220 and stores the abbreviated display target area in the data unit 240. The clipping plane calculation unit 232 serves as a boundary when the display is omitted from the omission display target area 242.
And the abbreviated display direction 244 and the number of display times 245 of the figure / part are obtained and stored in the data section 240. The abbreviated display unit generation unit 233 generates a shape representing the abbreviated display unit from the corresponding clipping plane 243 and the bounding box of the figure or component, and stores the shape in the data unit 240. The abbreviated display unit display processing unit 234 converts the abbreviated display unit display data 245 stored in the data unit 240 into the display unit 21.
0 is displayed. It also has a function of making the line type, color, and the like of the display data for the abbreviated display unit different from the values set in the figures and components so that the user can easily recognize the lines. The figure / part display position calculation section 235 calculates a display position 247 for displaying a figure or part to be displayed at a position adjacent to the abbreviated display section, and stores the display position 247 in the data section 240. The figure / part display processing unit 236 converts the figure / part into a figure / part.
It is displayed at the display position 247 calculated by the component display position calculation unit 235.
It has a function of not displaying shape data of a figure or a part located in the omitted display direction 244 with 3 as a boundary. In the case of shape data spanning the boundary, the shape up to the boundary of the display target is displayed. The data section 240 is data stored in a storage device such as a memory or a hard disk, and
Part shape data 241, abbreviated display target area data 24
2. Clipping plane 243, abbreviated display direction 244, abbreviated display part display data 245, number of times of display of figure / part 24
6. It is composed of display position data 247. The figure / part shape data 241 is CAD data in which the shapes of figures and parts are defined. Abbreviated display target area data 242
Is data indicating a range in which the display of graphics and parts is omitted. The clipping plane 243 is data serving as a boundary between displaying and not displaying a figure or a part. The abbreviated display direction 244 is vector data indicating which side of the clipping plane 243 is used when omitting the display of a figure or a part. The abbreviated display part display data 245 is display data for representing a place where the display of a figure or a part is omitted. In the present invention, a clipping plane 243 is set when a graphic or part is displayed so that the graphic or part is not displayed in the setting area. As a result, the entire display of a figure or a part cannot be displayed by one display processing, so that the clipping plane 24 is not displayed.
The figures and parts must be displayed while changing the set values until all of them are displayed according to the number of 3. This number of times of display is the number of times 246 of figure / part display. Display position data 247
Is position data for displaying a graphic or part to be displayed such that display data of the graphic or part is displayed adjacent to the abbreviated display unit without discomfort.

FIG. 3 is a flowchart showing a processing procedure of the present invention. First, the omitted display area recognizing unit 231 prompts the user to specify an area whose display is to be omitted (301). This is performed by designating the coordinate position of a space or using an arbitrary position of a figure or a part. Next, a value necessary for generating display data of the abbreviated display unit is obtained. In order to distinguish the display width, which determines how closely the omitted area is displayed, and the size of the abbreviated display part so that it can be distinguished from the display data of figures and parts The user specifies the offset value of the abbreviated display part from the bounding box of the part (302). This is performed by designating with numerical values or using the element lengths and geometric data of figures and parts. Clipping plane calculator 23
2 obtains clipping plane data 243 which is a plane serving as a boundary between display and display omission from the omission display target area data 242 obtained in 301 (303). Next, abbreviated display direction data 244 indicating which side of the clipping plane data 243 is abbreviated display is obtained (304). Further, the clipping plane data 243 and the abbreviated display direction data 244 are set, and the number of times the graphic / part display processing 236 needs to be performed and the number of graphic / part display times 246 are obtained (305). The abbreviated display unit generation unit 233 determines from the figure / part shape data 241 a bounding box containing all the figures and parts, and omits the display of figures and parts from the display intervals and offset values obtained in 302. The abbreviated display unit display data 245 is generated (30).
6). The abbreviated display unit display processing unit 234 displays the abbreviated display unit display data 245 on the display unit 210 (307). In order to display a graphic or a part to be displayed without omission at a position adjacent to the omission display part, the graphic / part display position calculation unit 235 obtains a conversion matrix for moving to the position. The graphic / part display processing unit 236 sets the conversion matrix obtained by the graphic / part display position calculation unit 235 in addition to the conventional conversion matrix on the display unit 210 (309).
Next, clipping plane data 243 and abbreviated display direction data 244 are set (310). Then, the figures and parts are displayed on the display unit 210 (311). The processing of the figure / part display position calculation unit 235 and the figure / part display processing unit 236 repeats the figure / part display count 246 (308).

FIGS. 4 to 6 are diagrams for explaining an embodiment of the present invention. FIG. 4 illustrates a procedure for obtaining a clipping plane, a display omission direction, and the number of times of display.

FIG. 4A shows a part (40) before abbreviated display.
1). In order to abbreviate the display of this component, the user first specifies the area to be omitted, the display width of the abbreviated display unit, and the offset value. The area (402) painted in gray in (b) of FIG. 4 is the area designated by the user. From this area, the clipping plane (405, 405) shown in FIG.
406) and the display omission direction (403, 404) are obtained.
The number of display times is 403 and 405, and 404 and 406, so that the number of display times is two.

FIG. 5 illustrates the generation of an abbreviated display.
First, a component bounding box (501) is obtained from the shape data of the component. Next, display data (505) of the abbreviated display unit of the bounding box size of the component from the display width (502) of the abbreviated display unit specified by the user and the clipping plane (503, 504) obtained from the display omission area.
Generate Since it is difficult to distinguish the display data of the component from the display data as it is, the size of the display data of the omitted display unit is changed based on the offset value (506) from the bounding box (507). FIG. 5C is a display example of the generated abbreviated display unit.

FIG. 6 illustrates the display processing of a figure or a part. FIG. 6A shows the first process of displaying figures and parts. Clipping plane (602) and display omission direction (60
When 3) is set and a graphic or part is displayed, only the left side (601) is displayed without displaying the right side (604) of the clipping plane in the figure. Similarly, in FIG. 6B, if another set of clipping planes (606) and the display omission direction (607) are set and graphics and parts are displayed, the left side (608) of the clipping plane in the figure is not displayed, and the right side is not displayed. Only (605) is displayed. By performing the two display processes after setting the display to a position adjacent to the abbreviated display unit (609), FIG.
(C) can be displayed.

[0014]

As described above, according to the present invention, when a graphic or part having a remarkable length in an arbitrary direction is handled, a plurality of places are displayed at once without changing the values of the graphic or part. Can use the values of figures and parts for other tasks.

[Brief description of the drawings]

FIG. 1 is a display example of a component according to the present invention.

FIG. 2 is an overall configuration diagram of a CAD system that implements the present invention.

FIG. 3 is a flowchart showing one embodiment of the entire processing of the present invention.

FIG. 4 is an explanatory diagram of a procedure for generating a clipping plane, a display omission direction, and a display count.

FIG. 5 is an explanatory diagram of a generation procedure of an abbreviated display unit.

FIG. 6 is an explanatory diagram of display processing of a figure or a part.

[Explanation of symbols]

101: area where the user wants to omit display 102:
A shape that indicates that the user has omitted the display,
103: a part of a figure or a part referred to by a user, 104
.., A part of figures and parts referred to by the user, 210... Display unit, 220... Input unit, 230... Processing unit, 231, omitted display area recognition unit, 232.
3 ... Abbreviated display unit generation unit, 234 ... Abbreviated display unit display processing unit, 235 ... Graphic / part display position calculation unit, 236 ... Graphic / part display processing unit, 240 ... Data unit, 241 ... Graphic / part shape data, 242 ... abbreviated display target area data, 243 ... clipping plane, 244 ... abbreviated display direction, 245 ... abbreviated display section display data, 246 ... number of times of display of figures and parts, 247 ... display position data,
Reference numeral 401 denotes a part before the display is omitted, 402 denotes an area where the user wants to omit display, 403 denotes a clipping plane (405).
Display omission direction corresponding to 404, display omission direction corresponding to clipping plane (406), 405 ... clipping plane, 406 ... clipping plane, 501 ... component bounding box, 502 ... display width of omitted display section, 503 ... clipping Plane, 504 ...
Clipping plane, 505: display data of the abbreviated display unit of the bounding box size, 506: offset value from the bounding box, 507: display data of the abbreviated display unit, 601: parts displayed for the first time,
602: clipping plane, 603: display omitting direction, 604: parts not displayed, 6
05: a component displayed second time, 606: clipping plane, 607: display omitting direction, 608: component not displayed, 609: omitting display unit.

Claims (2)

[Claims] 1. A system for recognizing a position at which a display is to be omitted, and a device for omitting a display at a recognized position in a system which handles a graphic or part having a remarkable length in an arbitrary direction by a CAD system. A CAD system comprising: means for determining a position at which a graphic or a component not to be omitted is displayed at an arbitrary interval; and means for displaying a graphic or part not to be omitted.
Display method of figures and parts in the system. 2. A CAD system according to claim 1, wherein a means for setting the size of a shape indicating the region in which the display is omitted so that a user can easily recognize the region, and the color and thickness of a line of the shape. A method for displaying figures and parts in a CAD system, comprising means for setting a line type and means for shading drawing on a surface of the shape.