JPH04145587A - Graphic picking up method for picture processor - Google Patents

Abstract

PURPOSE:To enable an unskilled operator to easily pick up a graphic even when the graphic is small by enlarging a fixed area around a cursor and interlocking the enlargement with the movement of the cursor. CONSTITUTION:When an operator wants to pick up a bolt hole 5 in the part drawing 1 of a curtain wall, the operator moves a cursor 4 to a position at which the hole 5 can be picked up. When the cursor 4 is moved, an enlarged area 3 follows the movement of the cursor 4 by displaying enlarged picture of its passing areas and displays an enlarged picture of the area containing the hole 5. When the hole 5 is finally picked up, the cursor 4 is positioned to the center of the bolt hole 5 on the enlarged picture displayed by the enlarged area 3. Therefore, the picking operability of the cursor can be improved, since any part of graphics can be picked up easily even when the part has a complicated form.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an image processing apparatus, and particularly to a method of specifying and picking a figure displayed on a display with a cursor.

[Conventional technology]

Conventionally, in order to select a figure displayed on a display screen in an image processing device such as a CAD system, a method has been used to specify and pick the figure with a screen cursor linked with a mouse, etc. If they are close to each other, there is a problem in that a plurality of figures overlap in the range designated by the screen cursor, and a figure other than the desired figure may be mistakenly picked.

To solve this problem, Japanese Unexamined Patent Publication No. 62-21778 discloses a technique for adding a scale to the cursor to prevent the user from picking the wrong figure.

[Problem to be solved by the invention]

In the above conventional technology, the shape of the cursor has been devised to improve the operability of figure picking, but in order to pick fine figures, the operator needs to become skilled in cursor operation, or an enlargement process that is separate from the picking process is required. After applying, it is necessary to move the cursor to the desired shape and pick it.
The operability was not sufficiently improved.

SUMMARY OF THE INVENTION An object of the present invention is to provide a picking method that allows easy picking of fine figures without requiring operator skill.

[Means to solve the problem]

In order to achieve the above purpose, a certain area centered on the cursor for specifying a figure is set as an enlarged display area,
Enlarges and displays the shape within the enlarged display area on the screen,
The movement of the cursor and the movement of the enlarged display area are linked.

Furthermore, a function is added to measure the shortest distance between figures in the enlarged display area and automatically change the magnification factor until the shortest distance becomes distinguishable when picking.

[Effect]

By setting a fixed area centered around the cursor as an enlargement area and linking it with the movement of the cursor, the screen of the part to be picked is always enlarged, increasing the spacing between shapes and making it easier to specify the desired shape even if it is a complicated shape. No more incorrect shape specifications.

Further, by measuring the shortest distance between figures in the enlarged display area and automatically changing the enlargement magnification, it is possible to easily specify fine figures that cannot be identified with a preset enlargement magnification.

〔Example〕

Hereinafter, one embodiment of the present invention will be described in detail using the drawings.

FIGS. 1 and 2 are partial views of a curtain wall in an architectural design drawing, or the state displayed on the display of an image processing device.

A curtain wall partial diagram 1, a cursor 4, and an enlarged area 3 are displayed on the screen 2.

Here, the enlarged area 3 has a rectangular shape, and the cursor 4 is located at its center.

The enlarged area 3 enlarges and displays what is surrounded by the rectangle.

Now, when trying to pick the bolt hole 5 in the curtain wall partial view 1, the operator moves the cursor 4 to a position where the bolt hole 5 can be picked.

At this time, the enlarged area 3 follows the movement of the cursor 4, and enlarges and displays the part of the curtain wall partial diagram 1 that includes the bolt hole 5 while enlarging the part through which the enlarged area 3 passes.

FIG. 1 is a diagram when the bolt hole 5 is finally picked, and the cursor 4 is located at the center of the bolt hole 5 enlarged by the enlargement area 3.

Next, an example of a cross-sectional view of a pillar will be described with reference to FIGS. 3 and 4.

In FIG. 3, a column sectional view 6, a cursor 8, and an enlarged area 9 are displayed on the screen 2.

Here, the enlarged area 9 is circular, and the cursor 8 is located at its center.

The enlarged area 9 enlarges and displays what is surrounded by the circle.

Now, when trying to pick the reinforcing bar 7 in the column cross-sectional view 6, the operator moves the cursor 8 to a position where the reinforcing bar 7 can be picked.

At this time, the enlarged area 9 follows the movement of the cursor 8, and enlarges and displays the part through which the column cross-sectional view 6 passes, while enlarging and displaying the part including the reinforcing bars 7.

FIG. 4 is a diagram when the reinforcing bar 7 is finally picked, and the cursor 8 is located at the center of the reinforcing bar 7 enlarged by the enlarged area 9.

Figures 5 and 5 are flowcharts showing the function of making the enlarged area follow the movement of the cursor explained in Figures 1 to 4, and also show the range to be enlarged and the change in magnification magnification. It is something that

FIG. 5 will be explained below.

A graphic pick operation is started (501).

A cursor is displayed at an arbitrary point on the screen by mouse operation (502).

Normally, in a CAD system, a cursor is always displayed somewhere on the screen and can be operated with a mouse.

Next, set the cursor coordinates to (x, y), (X + y
) is enlarged and displayed on the screen in an area of radius r (503). Here, the area to be enlarged will be surrounded by a circle with radius r.

At this time, the radius F is arbitrary and can be changed.

As r becomes larger, the area of the enlarged region increases, and as r becomes smaller, the area of the enlarged region decreases.

Furthermore, the magnification magnification when displaying the image in an enlarged manner can also be changed. If the shape of the figure you are trying to pick is small and there is a possibility of mispicking other parts, increase the magnification.

Next, the operator determines whether the figure to be picked can be picked within an area of radius r centered on (x, y), and if so, presses the mouse button (504).
. When the mouse button is pressed, the C'AD system determines that the shape has been picked, and ends the shape picking operation (505).

If a pick is not possible, the operator moves the cursor closer to the object being picked.

During this period, the coordinates of the cursor are also detected for each time, and the coordinates are set as (X0 to X, y+Δy) (506).

The display graphic shape on the screen in the area of radius r is displayed in an enlarged manner with (X+ΔXrV+Δy) as the center.

In this way, the enlarged area is moved following the movement of the cursor.

FIG. 6 is a flowchart of processing for optimizing the change in magnification.

The process of setting the optimum enlargement magnification will be described below with reference to FIG.

First, initial values of the magnification factor (n) and the minimum visible distance (Ω) are set (607). The minimum visible distance (42) is 2 on the screen
The distance should be such that the line segments of two figures can be clearly distinguished. Even if the initial values of the magnification factor (n) and minimum visible distance (Q) are input by the operator, empirically determined values are set in advance when generating the CAD system, etc. It can be anything.

Next, the shortest distance (L) between line segments within the enlarged display area is determined (603).

This distance is determined by one line segment 71 as shown in FIG. 7(a).
Draw a perpendicular line from the upper point to the other line segment 72, and find the longest distance. If there are only two line segments, this distance is set as (L). When there are three or more line segments as shown in Figure 7(b), divide them into combinations of two line segments,
Find the longest distance (PL) for each, and calculate that P
Let L be the shortest distance among L.

Next, calculate the minimum visible distance (Q) and the shortest distance between line segments (L
) are compared (604).

When L<M, it means that it is impossible to clearly distinguish two line segments on the screen.

If it is Ω, increase the magnification and increase the resolution of the line segment on the screen.

The magnification factor at this time is n+Δn, and the magnification factor is continuously changed until L≧Q (606).

When L≧Ω, the two line segments on the screen can be clearly distinguished and the line segment can be easily picked, so the setting of the optimum magnification is completed (605).

In this way, it is possible to optimize the change in magnification, but instead of using this method, the operator may set it arbitrarily and fix it at that value,
Further, for setting the magnification, a button for changing the magnification may be provided in addition to the button for instructing the mouse to pick, so that the magnification can be changed manually.

FIG. 8 shows a block configuration of an example of an image processing apparatus in which the present invention is implemented.

As shown in FIG. 9, the storage device 83 stores a control program 84 for image processing including a program for the figure pick of the present invention, a management table 85 for storing setting values necessary for control, and the like. ing.

The control program 84 is read into the CPU 82 and executed. When setting the initial value of the magnification factor (n) in FIG. 6 (step 6o2), etc., when using a value that has been set in advance at the time of system generation, etc., the corresponding setting value is sent to the CPU 82 from the management table as appropriate. Load and execute.

As described above, according to this embodiment, the center of the enlarged area within a certain range is set as the coordinates of the cursor position, and the enlarged area also moves as the cursor moves, so the position where the figure is picked is always displayed enlarged, and the position where the figure is picked is always enlarged. can also be easily done.

〔Effect of the invention〕

According to the present invention, it is possible to designate a graphic shape using a cursor by enlarging and searching the graphic shape displayed on the screen using a lens.

Therefore, even when picking a part of a complex figure with 1M minutes, you can enlarge that part and hide it from view, so you can reliably pick the part you want to pick, and the cursor picks the first part. Figures 2 and 2 are diagrams showing the display screen when picking a part of a partial diagram of a curtain wall according to an embodiment of the present invention, Figures 3 and 4
The figure shows the display screen when picking a part of the column cross-sectional view, Figure 5 is a flowchart of the function to make the enlarged area follow the movement of the cursor in Figures 3 to 4, and Figure 6 is the flowchart of the function to follow the enlarged area as the cursor moves. A flowchart showing the optimum setting process for the enlargement magnification of a figure. FIG. 7 is a diagram showing line segments in the enlarged display area.
The figure is a block diagram of an image processing apparatus according to an embodiment of the present invention, and FIG. 9 is a diagram showing details of a storage device.

1...Curtain wall partial diagram, 2...Screen, 3.
...Enlarged display area (rectangle), 4...Cursor (cross)
, 5... Bolt hole, 6... Column sectional view, 7... Rebar, 8... Cursor (X-shaped), 9... Enlarged display area (
circle), 71-75...line segment.

2, - hand.

Representative Patent Attorney Masaru Kogawa Figure 1 Figure 2 , da Rin 3 diagram Shima 4- Diagram Figure 5 Rin 6 diagram Figure 7 (α) cb) Figure 8 Collection 9 Figure

Claims (1)

[Claims] 1. In a figure picking method in which an image is displayed on the screen of an image processing device and a figure is specified with a cursor, a figure on the screen within a certain range around the cursor is enlarged. A figure picking method for an image processing device, characterized in that the figure is displayed as follows. 2. In the figure picking method for an image processing apparatus according to claim 1, the distance of the figure within a certain range around the cursor is measured, and the enlargement magnification is automatically changed so that the measured value becomes larger than a preset distance. A figure picking method for an image processing device, characterized in that: