JPH07325931A - Image processor - Google Patents

Abstract

PURPOSE:To facilitate figure selection by decomposing a free curve line into lines when a mouse button is pressed at the time of the figure selection, and comparing them with stored segments and selecting figure data. CONSTITUTION:When a mouse is moved crossing wiring pattern lines 15-17 with the mouse button pressed, a track storage means reads and stores the position coordinates during the movement each time the mouse moves by a certain quantity. When the mouse button is released from being depressed, segments which are as many as [the number of read position coordinates-1] are generated from the position coordinates read by the track storage means. Namely, the free curve line 39 that the mouse draws is decomposed into the segments. Then a crossing figure discriminating means compares the segments generated with the mouse with segments stored in a figure storage means to decide segments crossing the free curve line 39. In this case, wiring pattern segments 15-17 and 22 are decided and selected, and those wiring pattern segments 15-17 and 22 are stored in a selected figure storage means.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention is used for figure selection in computer aided design. The present invention relates to an image processing device for selecting graphic data such as line segments and circles to be picked up by a mouse. The present invention is suitable for use as an apparatus for designing a printed circuit board.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 5, a device of this type has a central processing unit 1, a mouse 2 for inputting a graphic, and a C.
An RT display device 3, a keyboard 4, a storage device 5, and an output device 6 are provided, and the central processing unit 1 stores pick point storage means 7 for storing the points picked by the mouse 2 and existing graphics. A graphic storage means 8; and a pick point comparison means 9 for judging how the graphic stored in the graphic storage means 8 is related to the point picked by the mouse.
A selected figure storage means 10 for storing the selected figure is provided.

Here, the operation of the conventional apparatus thus configured will be described with reference to FIGS. 6, 7 and 8. Wiring pattern line segments 15, 16, and 1 shown in FIGS. 6, 7, and 8.
The point pick operation in the case of simultaneously selecting 7 to delete and move is the line segment 15 connecting the points 29 and 30 shown in FIG.
By moving the cursor of the mouse 2 to the pick point 35 at an arbitrary position above and pressing the mouse button at that position, the coordinates when the mouse button is pressed are stored in the pick point storage means 7. Next, the pick point comparison means 9 processes the positional relationship between the line segment groups 8 to 24 stored in the figure storage means 8 and the pick point 35, and the line segment including the coordinates of the pick point 35. 15 is stored in the selected figure storage means 10.

In the rectangular inclusion pick operation shown in FIG. 7, when the line segments 15, 16 and 17 are selected, the mouse 2
The lower left pick point 36 of the rectangle and the upper right pick point 37 of the rectangle
The rectangle 38 obtained by pressing the mouse button at each position is stored in the pick point storage means 7, and the positional relationship between the line segment groups 8 to 24 and the rectangle 38 stored in the figure storage means 8 is compared with the pick point. Rectangle 3 processed by means 9
The line segments 15, 16, 17, 24 included in 8 are stored in the selected figure storage means 10.

In the rectangular intersecting pick operation shown in FIG. 8, in the case of a rectangular inclusion pick, the pick point comparing means 9 obtains a rectangle 38 obtained from the rectangle lower left pick point 36 and the rectangle upper right pick point 37.
And the positional relationship of the line segment groups 8 to 24 stored in the figure storage means 8 including the line segments tangent to the rectangle 38, and the line segments 13, 14, 15, 16 intersecting the rectangle 38. 1
7, 10, 11, 12, 20, 21, 22, 24 are stored in the selected figure storage means 10.

[0006]

Since such a conventional image processing apparatus cannot store any points other than the point picked by the mouse, a plurality of figures shown in FIG. The wiring pattern line segments 15, 16 and 17 cannot be stored simultaneously.

Further, in order to store the plurality of wiring pattern line segments 15, 16 and 17 shown in FIG. 7, they must be included in the inclusion rectangle 38 as shown in FIG. There is a problem that line segments up to 24 are included and stored.

Further, when the intersecting rectangle 38 is created as shown in FIG. 8, in addition to the wiring pattern line segments 15, 16, 17, wiring pattern line segments 13, 14, 10, 11, 12,
There is a problem that 20, 21, 22, and 24 are included and stored, and it is not possible to simultaneously store only a plurality of wiring pattern line segments 15, 16, and 17 for an intended figure.

The present invention has been made under such a background, and an object thereof is to make it possible to select intended graphic data with just one operation of a mouse without excess or deficiency. It is an object of the present invention to provide an apparatus capable of selectively storing only a desired plurality of wiring pattern line segments at the same time by pressing a mouse button and operating a mouse when used in a printed wiring board designing apparatus. . It is an object of the present invention to provide an apparatus capable of selecting only a plurality of figures as intended.

[0010]

According to the present invention, there is provided a central processing unit (1) for image processing, a mouse (2) connected as one of input means of the central processing unit, and a central processing unit of the central processing unit. An image processing device comprising: a display device (3) for superimposing and displaying image information stored in a plurality of storage means (8, 11) provided therein on one screen,
One of the plurality of storage means is a locus storage means (11) that draws a free locus curve by moving the mouse while pressing a button provided on the mouse. Figure storage means (8)
Means for identifying a figure that intersects with the locus curve among the plurality of figures stored in, and means for executing processing assuming that all the intersecting figures identified by the identifying means are the figures instructed to be selected. It is characterized by having.

The means for executing the process as a figure instructed to be selected includes means (10) for separately storing all the figures instructed to be selected, and the means (10) for separately storing the figure in the central processing unit. ) Includes processing means for erasing graphics other than the graphics stored in the display screen, and the graphics stored in the separately storing means (10) are displayed on the display screen in a different color from the other graphics. The locus curve is preferably displayed in a color distinguishable from other figures, and the means for identifying the intersecting figures includes means for calculating and comparing the coordinates of the two figures, and the figure storing means (8). ) Is a wiring pattern on the surface of the printed wiring board in the process of designing, an external storage device (5) is connected to the central processing unit (1), and the external storage device (5) is connected to the external storage device according to an operation input. It is desirable to provide a means for transferring the 憶 information and information stored in said graphic memory means (8) to each other.

[0012]

[Function] A button provided on the mouse is moved while pressing it to display a processing figure on the display screen, a free curve is drawn on the displayed processing figure by the mouse, and a figure intersecting this free curve is selected. The processing is performed assuming that the figure is the created figure. All the figures selected and selected are stored separately,
Figures other than the stored figures are deleted from the display screen. Further, the stored figure is displayed on the display screen in a color different from that of the other figures, and the locus curve is displayed in a color distinguishable from other figures. The figure that intersects is identified by calculating and comparing two coordinates. The information stored in the external storage device and the information (wiring pattern on the surface of the printed wiring board) stored in the device can be mutually transferred in accordance with the operation input.

Thus, a part of the plurality of figures displayed on the display screen can be selected by an instruction from the mouse, and a plurality of intended figures can be selected at once by a simple device. .

[0014]

Embodiments of the present invention will now be described with reference to the drawings.

(First Embodiment) FIG. 1 is a block diagram showing the arrangement of the essential parts of the first embodiment of the present invention.

In the embodiment of the present invention, a central processing unit 1 for performing image processing, a mouse 2 connected as one of the input means of the central processing unit 1, and a plurality of central processing units 1 are provided. A CRT display device 3 for superimposing and displaying the image information respectively stored in the storage means on one screen,
As a feature of the present invention, one of the plurality of storage means is a locus storage means 11 that draws a free locus curve by moving the mouse while pressing a button provided on the mouse 2. Of the plurality of figures stored in the figure storing means 8 which is another one, the intersection figure identifying means 12 for identifying the figure intersecting with the locus curve, and all the intersections identified by the intersection figure identifying means 12 Means for executing the process assuming that the figure is a figure instructed to be selected.

The means for executing the process as a figure instructed to be selected includes a selected figure storage means 10 for separately storing all the figures instructed to be selected, and the selected figure storage means 10 in the central processing unit 1. Processing means for erasing graphics other than the graphics stored in the display screen from the display screen. The figure stored in the selected figure storage means 10 is displayed on the display screen in a color different from the other figures, and the locus curve is displayed in a color distinguishable from other figures.

The intersecting figure identifying means 12 for identifying intersecting figures includes means for calculating and comparing the coordinates of two figures. The graphic stored in the graphic storage means 8 is a wiring pattern on the surface of the printed wiring board which is being designed. An external storage device 5 is connected to the central processing unit 1 and is provided with means for mutually transferring the information stored in the external storage device 5 and the information stored in the graphic storage means 8 in accordance with an operation input.

Next, the operation of the first embodiment of the present invention thus constructed will be described. FIG. 2 is a flow chart showing the flow of processing operations in the first embodiment of the present invention, and FIG. 3 is a diagram for explaining the graphic selection operation in the first embodiment of the present invention. Here, an example in which the line segments 15, 16, 17, and 22 shown in FIG. 3 are simultaneously stored will be described.

When the position coordinate of the figure is monitored by the mouse 2 and the mouse button is pressed (S1), the locus storage means 11 starts reading the position coordinate when the mouse 2 moves by a certain amount. When the mouse button of the mouse 2 is pressed and moved so as to intersect the wiring pattern line segments 15, 16 and 17 (S2), the locus storage means 11 moves the position coordinate of the mouse 2 by a predetermined amount during the movement. Each position is read and stored (S3). When the mouse button is released (S4), a line segment of [the number of read position coordinates-1] is created from the position coordinates read by the locus storage means 11 (S4).
5). That is, the free curve 39 drawn by the mouse 2 is decomposed into line segments. Next, the intersecting figure identifying means 12 compares the line segment created by the mouse 2 with the line segment stored in the figure storing means 8 to determine the line segment intersecting the free curve 39 (S6). In the case of FIG. 3, wiring pattern line segments 15, 16,
17, 22 are discriminated and selected. The selected figure pattern storage unit 10 stores the selected wiring pattern line segments 15, 16, 17, and 22 (S7).

(Second Embodiment) In the second embodiment of the present invention, the graphic storage means 8 includes means for storing arcs and circles forming a graphic, and the other parts are configured similarly to the first embodiment. Figure 4
FIG. 8 is a diagram for explaining a graphic selection operation in the second embodiment of the present invention. As shown in FIG. 4, the figure storage means 8 has arcs 41, 42 and circles 43, 44, 4 in addition to the wiring pattern line segments.
5, the free curved line 40 is drawn by the mouse 2 and the same processing operation as that of the first embodiment shown in FIG. 2 is performed, whereby the arcs 41 and 42 and the circle 44 can be selected and stored.

[0022]

As described above, according to the present invention, a free curve when a mouse button is pressed at the time of selecting a figure is decomposed into line segments, and a desired figure is obtained by comparing and discriminating with a stored line segment. Since you can select the data,
Only the wiring pattern line segment that intersects the free curve when the mouse button is pressed can be stored at the same time, and you can easily select multiple figures by simple mouse operation, and you will select unwanted figures. There is an effect that such inconvenience can be eliminated.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a main part of a first embodiment of the present invention.

FIG. 2 is a flowchart showing the flow of processing operations in the first embodiment of the present invention.

FIG. 3 is a diagram for explaining a graphic selection operation in the first embodiment of the present invention.

FIG. 4 is a diagram for explaining a graphic selection operation in the second embodiment of the present invention.

FIG. 5 is a block diagram showing a configuration of a main part of a conventional example.

FIG. 6 is a diagram illustrating a point pick operation in a conventional example.

FIG. 7 is a diagram illustrating a rectangular inclusion pick operation in a conventional example.

FIG. 8 is a diagram illustrating a rectangular cross pick operation in a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Central processing unit 2 Mouse 3 CRT display device 4 Keyboard 5 External storage device 6 Output device 7 Pick point storage means 8 Graphic storage means 9 Pick point comparison means 10 Selected graphic storage means 11 Trajectory storage means 12 Crossed pattern identification means

Claims (8)

[Claims] 1. A central processing unit for performing image processing, a mouse connected as one of input means of the central processing unit, and a plurality of storage units provided inside the central processing unit. In an image processing device comprising a display device for displaying image information in a superimposed manner on one screen, one of the plurality of storage means is movable by moving the mouse while pressing a button provided on the mouse. And a means for identifying a figure intersecting the trajectory curve among a plurality of figures stored in a figure storage means which is another one of the storage means, An image processing apparatus, comprising: means for executing processing assuming that all intersecting figures identified by the means are selection-instructed figures. 2. The image processing apparatus according to claim 1, wherein the means for executing the process as a figure instructed to be selected includes means for separately storing all the figures instructed to be selected. 3. The image processing apparatus according to claim 2, wherein the central processing unit includes processing means for erasing a figure other than the figure stored in the separately storing means from a display screen. 4. The image processing apparatus according to claim 2, wherein the figure stored in the separately storing means is displayed in a color different from that of other figures on the display screen. 5. The image processing apparatus according to claim 1, wherein the locus curve is displayed in a color distinguishable from other figures. 6. The image processing apparatus according to claim 1, wherein the means for identifying the intersecting figures includes means for calculating and comparing the coordinates of the two figures. 7. The graphic stored in the graphic storage means is a wiring pattern on the surface of a printed wiring board under design.
The image processing device described. 8. An external storage device is connected to the central processing unit, and means is provided for transferring information stored in the external storage device and information stored in the graphic storage means to each other in accordance with an operation input. The image processing device according to any one of claims 1 to 7.