JPH0291690A - Enlargement/reduction display system - Google Patents

Abstract

PURPOSE:To automatically enlarge and reduce an area by storing, expanding, and displaying the present display area at the time when a certain number of or more graphic elements exist in a certain area with the cursor position as the center but selecting a graphic element nearest to the cursor position at the time when the number of graphic elements in the certain area is smaller than the certain number. CONSTITUTION:When graphic elements are selected in accordance with an input device 102, the number of graphic elements existing in a prescribed (AXA) area 302 with a cursor position 301 as the center is obtained in an expansion discriminating module 104. When the number of elements existing there is equal to or larger than a prescribed value, present display area information is stored in a display area preservation internal memory 106. Next, an area 303 having a prescribed size (BXB) with the cursor position 301 as the center is enlarged and is displayed on a display device 107. The processing is returned to cursor display for graphic selection. Meanwhile, when the number of elements is smaller than a set value, a graphic element nearest to the cursor position 301 is selected in a graphic element selecting module 108. The processing is returned to cursor display for next graphic element selection.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention
The present invention relates to an enlargement/reduction display method suitable for use when inputting, displaying, and editing graphic data, such as Design).

(Prior Art) Conventionally, in a figure drawing system, when selecting an arbitrary figure from frequently displayed figure elements, first enlarge a part of the area containing the figure element to be selected, and then select the figure element. Select graphical elements in an easy-to-select display. Furthermore, if necessary, enlargement or reduction was performed manually, such as returning to the original display before enlargement.

There is also a multi-window method that displays the overall view, enlarged view, etc. at the same time, but the overall view is too small and the enlarged view is temporary, making it inconvenient to perform processing while understanding the whole. .

(Problem to be Solved by the Invention) As mentioned above, conventionally, although the figure display can be left as it is, some expansion.

There is a problem in that a graphic enlargement/reduction command such as returning to the original display after selecting an element must be executed each time.

An object of the present invention is to provide an enlargement/reduction method that automatically displays a partially enlarged display when selecting a graphic element from among frequently displayed graphic elements, and returns to a luminous graphic display after the selection is completed. .

[Structure of the Invention] (Means for Solving the Problems) The present invention provides means for determining how many graphic elements are present within a fixed area centered on the cursor position when selecting a graphic element;
A means of comparing and checking the number of graphic elements above with a predetermined constant, and when it is confirmed that there are more than the constant, the current display area information is stored and the constant area is enlarged and displayed with the cursor position as the center. means for selecting the graphical element closest to the cursor position when the value is less than a constant; and means for checking the presence or absence of display area information after graphic element selection is completed and displaying the screen using the display area information before enlargement. It is characterized by comprising:

(Function) In the above configuration, it is determined whether there are more than a certain number of graphic elements in a certain area centered on the cursor position, and if there are more than a certain number, the current display area is first memorized, and Enlarge a certain area. Then, when the value is less than a constant, the graphic element closest to the cursor position is selected, and when the graphic element selection is finished, the presence or absence of display area information is checked, the graphic display is returned to before enlargement, and the frequently displayed area is expanded. The restored display is automatically performed.

As a result, -temporal enlargement and reduction are automatically performed, improving operability.

(Example) Hereinafter, an example of the present invention will be described in detail using the drawings. FIG. 1 is a block diagram showing an embodiment of the present invention. In the figure, 101 is a CPU, which controls the entire system. Reference numeral 102 denotes a human-powered device, such as a keyboard and a mouse, through which various information is manually input. 103 is a storage device in which graphic information is stored.

Reference numeral 104 denotes an enlargement determination module, which judges whether there are more than a certain number of graphic elements within a certain area from the cursor position, and if so, stores the current display area and enlarges the image element to a certain extent around the cursor position. This is software that enlarges and displays an area. Reference numeral 105 is a display restoration module, which is software that restores the original graphic display before enlargement. 106
is an internal memory for display area storage, and stores the contents of the display area before enlargement. A display device 107 is a device that displays the above-mentioned graphical information on a screen.

108 is a graphic element selection module, which is software that selects the graphic element closest to the cursor position.

2 and 3 are diagrams cited to explain the operation of the embodiment of the present invention. FIG. 2 is a flowchart showing the operation of the embodiment of the present invention, and FIG. It is a conceptual diagram of an operation shown on a display screen.

Hereinafter, the operation of the embodiment of the present invention will be explained in detail. First, when a graphic element is selected according to the input device 102, the process proceeds to the enlargement determination module 104. First, an area of a preset size (AXA in the example of FIG. 3(a)) centered on the cursor position (301) shown in FIG. 3(a) when the graphical element is selected. (302
) is calculated (process 1 in Fig. 2). Here, if the number of existing elements is greater than or equal to the preset number, the current display area information is stored in the display area storage internal memory 106 (processing 2).

Next, an area (303) of a preset size (BxB in the example of FIG. 3(a)) is enlarged and displayed on the display device 107, centering on the cursor position (301) (processing 3). .

As a result, the display screen changes from Fig. 3(a) to Fig. 3(b).
The state changes to Then, the process returns to displaying the cursor for selecting graphical elements.

If the number of existing elements is less than the set value, the process moves to the graphic element selection module 108. Graphic element selection module 10
In step 8, the figure closest to the cursor position (301) is selected (processing 4). The process returns to displaying the cursor for selecting the next graphical element. When the graphic element selection is completed using the input device 102, the process proceeds to the display restoration module 105. Here, first, the immediately previous display area information is retrieved from the display area storage internal memory 106. If there is no information, the graphic element selection process ends. If there is information, that area is displayed on the display device (processing 5). This causes the display screen to change to the third
The state shown in FIG. 3(b) changes to that shown in FIG. 3(c), and the process returns to displaying the cursor for selecting the next graphical element.

Although the embodiment of the present invention has been described with respect to the graphic element selection process, it can be similarly applied to other processes such as temporarily enlarging a frequently displayed area and returning to the previous display after reference. . Further, in the embodiment, one-time enlargement/restoration has been described, but it is easily possible to perform multi-layered enlargement/restoration. The present invention can be particularly applied to mechanical CAD to obtain favorable effects.

[Effects of the Invention] As described in detail above, according to the present invention, layer operability is improved by automatically performing temporal enlargement and reduction.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a flowchart showing the operation of the embodiment of the present invention, and FIG. 3 is an operational conceptual diagram showing the operation of the embodiment of the present invention on a display screen. 101...CPU, 102...Input device, 103.
...Graphic element selection module, 104...Enlargement determination module, 105...Display restoration module, 106.
...Internal memory for display area storage. Applicant's representative Patent attorney Takehiko Suzue Before expansion (a) After expansion (b) After diagram selection (C)

Claims (1)

[Claims] When selecting a graphic element, there is a method for determining how many graphic elements exist within a fixed area centered on the cursor position, a means for comparing and checking the number of graphic elements above with a predetermined constant, and a means for checking if the number of graphic elements is greater than the constant. means for storing current display area information and enlarging and displaying the fixed area around the cursor position when it is confirmed that the display area is to be displayed; and means for selecting the graphic element closest to the cursor position when the value is less than a constant
An enlargement/reduction display method comprising means for checking the presence or absence of display area information at the end of graphic element selection and displaying the screen using the display area information before enlargement.