JP2943185B2 - Coordinate input method in CAD system - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a coordinate input method in a CAD (Computer Aided Design) system, and in particular, designates coordinates of a position of image data in a design operation using an interactive CAD system. The present invention relates to a coordinate input method in a CAD system.

[Conventional technology]

In interactive CAD systems, CRT (Cathode Ray
Due to limitations on the size of the screen such as Tube), it may not be possible to display all of the image data on the screen.

For example, such a situation occurs when a part of the image data is enlarged and displayed on a screen due to the necessity of handling complicated image data.

In this way, when image data larger than data that can be displayed on the screen is handled, coordinates are input by operating a cursor on the screen by a position input device (such as a combination of a mouse, a tablet and a stylus pen). Conventional method (coordinate input method in CAD system)
Is used to input the coordinates of a position that is not displayed on the screen, another function to change the display area in the image data (the area of the data displayed on the screen in the image data) An input operation of coordinates is performed after the display area is changed to include the position of the coordinates of the input target. (The operation of changing the display area accompanying the input operation of coordinates complicates image data. As it happens often).

[Problems to be solved by the invention]

In the coordinate input method of the conventional CAD system described above, multiple operations are required when inputting coordinates of a position other than the display area in the image data (the display area is changed to include the position of the input target coordinate). However, there is a drawback that the possibility of an operation error increases and the efficiency of the design work in the CAD system decreases.

SUMMARY OF THE INVENTION In view of the foregoing, it is an object of the present invention to avoid an extra operation for changing a display area, reduce the occurrence of operation errors, and improve the efficiency of design work in a CAD system. It is an object of the present invention to provide a coordinate input method in a CAD system.

[Means for solving the problem]

The coordinate input method in the CAD system according to the present invention has a one-to-one correspondence with image data storage means for storing image data and image data in the image data storage means. Viewpoint input means for inputting as coordinates of a viewpoint, image data display means for displaying on a screen a display area specified by the viewpoint specified by the viewpoint input means in the image data in the image data storage means, Display control means for controlling display of image data by data display means, CAD data creation means for creating CAD data constituting image data in the image data storage means, and CAD input by the viewpoint input means
Operation control means for controlling the operation of the CAD data creation means based on data for creating data.

[Action]

In the coordinate input method in the CAD system of the present invention, the image data storage means stores the image data, and the viewpoint input means corresponding to the image data in the image data storage means on a one-to-one basis is the image in the image data storage means. The coordinates of the point of consideration in the data are input as the coordinates of the viewpoint, and the image data display means displays on the screen a display area specified by the viewpoint specified by the viewpoint input means in the image data in the image data storage means. The control means controls the display of the image data by the image data display means, the CAD data creation means creates the CAD data constituting the image data in the image data storage means, and the operation control means controls the CAD input by the viewpoint input means.
The operation of the CAD data creating means is controlled based on the data for creating the data.

〔Example〕

 Next, the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing a configuration of an embodiment of a coordinate input method in a CAD system according to the present invention. The coordinate input method in the CAD system according to the present embodiment includes viewpoint input means 1-1, image data display means 1-2, display control means 1-3, operation control means 1-4, and CAD data creation means 1 -5 and image data storage means 1-6.

The viewpoint input unit 1-1 is handled by a CAD operator, and is configured by a data input device (position input device) capable of indicating a position such as a combination of a mouse, a tablet, and a stylus pen.

The image data display means 1-2 is constituted by a CRT or the like, and displays the image data stored in the image data storage means 1-6 based on information from the display control means 1-3.

The display control means 1-3 controls the display of the display area in the image data so that the coordinates of the viewpoint specified by the viewpoint input means 1-1 are at the center of the screen of the image data display means 1-2.

The operation control means 1-4 regards the coordinates of the viewpoint designated by the viewpoint input means 1-1 as coordinates of the point of consideration, and generates CAD data based on the data of the point of consideration (data for creating CAD data). The operation of the creation means 1-5 is controlled.

The CAD data creating means 1-5 creates CAD data (components of image data, for example, data relating to a line segment B shown in FIG. 2 (c)) based on the control by the operation control means 1-4 (CAD). The data creation means 1-5 is a conventional C
It has the same function as the CAD data creation means in the coordinate input method in the AD system.)

The image data storage unit 1-6 is constituted by a memory element, a magnetic file, and the like, to which the present embodiment is applied.
Stores image data handled by the CAD system.

Next, the operation of the coordinate input method in the CAD system of this embodiment configured as described above (when the CAD operator designates the coordinates in the image data 2-1 stored in the image data storage means 1-6). 2) (a) to (c) of FIG.
This will be described with reference to FIG. Here, it is assumed that a part (display area 2-2) of the image data 2-1 is displayed on the screen of the image data display unit 1-2 (in many cases, it is enlarged and displayed).

FIG. 2A shows image data 2-1 and image data display means 1 in the image data storage means 1-6 in such a case.
FIG. 7 is a diagram showing an example of a mutual relationship between a display area 2-2 displayed on a screen 2 and a state of a viewpoint input unit 1-1.

The image data 2-1 indicates the entire image data stored in the image data storage unit 1-6.

The display area 2-2 shows a part of the image data displayed on the screen of the image data display means 1-2. Which part of the image data 2-1 is displayed as the display area 2-2 by the image data display means 1-2 is determined by the control of the display control means 1-3 based on the viewpoint 2-3.

The viewpoint 2-4 for specifying the display area 2-2 is fixed at the center (center) of the display area 2-2 corresponding to the screen of the image data display means 1-2 (generally, the display area 2 is displayed). −
2 as long as it can be specified, and is not limited to the center).

The viewpoint input means 1-1 (in the example shown in FIGS. 2 (a) to 2 (c), constituted by a combination of a tablet and a stylus pen) corresponds to the image data 2-1 in a one-to-one correspondence. 2 (a tablet of the viewpoint input means 1-1 and the image data 2-1 have a one-to-one correspondence as shown in FIGS. 2A to 2C). Enter the coordinates of the viewpoint by specifying the corresponding point.

Consider point A in FIG. 2 (a).
If it is assumed that the position is to be designated for the operation), the following processing (CAD operation) is performed.

The viewpoint input means 1-1, based on the operation of the CAD operator,
The viewpoint 2-3 is moved to a point A which is a consideration point (viewpoint 2-3).
Is moved to the position on the viewpoint input means 1-1 corresponding to. Information on the position of the viewpoint 2-3 is first sent to the display control means 1-3).

The display control means 1-3, based on the transmitted information on the position of the viewpoint 2-3, sets the display area 2- so that the specified viewpoint 2-3 is located at the center of the screen of the image data display means 1-2. 2 is determined.

The image data display means 1-2 moves the display area 2-2 based on the movement information (moves from the position shown by the broken line to the position shown by the solid line in FIG. 2 (b)).

If the operation of inputting a consideration point (a predetermined operation such as an operation of clicking a stylus pen) is performed after the viewpoint 2-3 matches the consideration point according to an instruction of the CAD operator, the operation is performed. The control means 1-4 controls the current viewpoint 2-
Recognize the position of 3 as a point of consideration, and its viewpoint 2-3 (point of consideration)
The coordinates in the image data 2-1 are obtained and sent to the CAD data creation means 1-5.

The CAD data creation means 1-5 processes the coordinates of the considered point to create CAD data, and updates the image data 2-1 stored in the image data storage means 1-6 with the CAD data.

Next, a specific example when the CAD data is created and the image data 2-1 is updated will be described. Here, CAD
A line segment C (second
The operation in the case where FIG. (C) is created will be described.

It is assumed that the state of the image data 2-1 before the line segment C is created is as shown in FIG.

The viewpoint input means 1-1, based on the instruction of the CAD operator,
The viewpoint 2-3 is moved to the consideration point which is the viewpoint (point A) of the line segment C.

At this time, the CAD operator operates the image data display means 1-2.
The viewpoint input means 1-1 is operated while looking at the point of interest while looking at the screen of (1) to match the point of consideration (point A) with the viewpoint 2-3.

When the consideration point matches the viewpoint 2-3, the operator:
According to a predetermined CAD operation, an operation (such as a click of a stylus pen) for setting the consideration point (viewpoint 2-3) as the viewpoint of the line segment C is performed.

Next, the viewpoint input unit 1-1 sets the end point (point B) of the line segment C in the same manner as when the viewpoint of the line segment C is set.

By this operation, the display area 2-2 becomes the image data 2-
1 (moves from the position shown by the broken line to the position shown by the solid line in FIG. 2 (c)).

When the operation for setting the end point of the line segment C is completed, the coordinates of the viewpoint (point A) and the end point (point B) are converted into data for forming the line segment C by the operation control means 1-4 under the control of the operation control means 1-4. 1-5.

The CAD data creating means 1-5 receiving the data for creating the line segment C creates the CAD data relating to the line segment C,
By adding the AD data, the image data storage means 1-
6 is updated.

As a result of the above operation, a line segment C in FIG. 2 (c) is created.

As can be seen from this example, in the present embodiment (and thus the present invention), when inputting the coordinates of a point (position) not included in the display area 2-2 of the screen of the image data display means 1-2, No extra operation for changing the display area is required, and the entire image data 2-1 can be handled easily and quickly.

〔The invention's effect〕

As described above, according to the present invention, in the coordinate input accompanying the CAD operation, the instruction of the viewpoint for changing the display area and the CA
By performing the two operations with the instruction of the consideration point by the D operator only by the operation of the instruction of the viewpoint, there is an effect that an extra operation for changing the display area can be avoided.

In addition, since unnecessary operations can be avoided as described above, operation errors can be reduced, and there is an effect that the efficiency of design work in a CAD system can be improved.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of one embodiment of the present invention, and FIGS. 2 (a) to 2 (c) are diagrams for explaining a specific operation of a coordinate input method in the CAD system shown in FIG. It is. In the drawing, 1-1: viewpoint input means, 1-2 ... image data display means, 1-3 ... display control means, 1-4 ... operation control means, 1-5 ... CAD data creation means, 1-6: image data storage means; 2-1: image data; 2-2: display area; 2-3: viewpoint.

Claims (1)

(57) [Claims] 1. An image data storage means for storing image data, which has a one-to-one correspondence with image data in the image data storage means, and inputs coordinates of a consideration point in the image data as coordinates of a viewpoint. Viewpoint input means, image data display means for displaying, on a screen, a display area specified by the viewpoint specified by the viewpoint input means in the image data in the image data storage means, image data by the image data display means Display control means for controlling the display of the image, and CAD constituting the image data in the image data storage means
CAD data creating means for creating data, and operation control means for controlling the operation of the CAD data creating means based on data for creating CAD data input by the viewpoint input means. Coordinate input method in CAD system.