JPS63142468A - Display processing system for hatching pattern - Google Patents

Abstract

PURPOSE:To prevent a pattern from being shifted due to the movement of a window by controlling the hatching pattern of a graphic in the window by a boundary whose relative position is unchangeable even if the window is moved. CONSTITUTION:A graphic processing part 20 forms logical coordinates fixing a proper relative position on the display position of the window and holds and controls the logical coordinates so that the relative position of the logical coordinates is not changed even if the window is moved. In the hatching processing of a graphic in the window, the original pattern starting position of a hatching pattern is determined by a boundary based upon the logical coordinates and hatching specifying operation is transferred to a coordinate transformation part 21 together with the positional information of the logical coordinates. The transformation part 21 transforms the logical coordinate value of the hatching specifying information into physical coordinate value and transfers the transformed value to the hatching processing part 3. The hatching processing part 3 displays the hatching display information on a display part 2.

Description

[Detailed Description of the Invention] [Summary] This is a display processing method for improving the display quality of hatching in a graphic display device having a window.

When displaying hunting within a shape by specifying the display position of the shape, the boundary position and repetition range of the hatching pattern, the boundary position of the hatching pattern is managed using the logical coordinates fixed to the window, and the logical coordinates The logical coordinate values of the boundary determined above are converted into physical coordinate values fixed on the display surface to specify the display position of the hatching pattern.

With this method, even if the window is moved, a figure can always be drawn without any deviation in the hatching pattern.

[Industrial application field]

The present invention relates to a display processing method for hatching patterns in a display device.

In various types of processing in computer systems, a display screen is divided into a plurality of display areas called windows, and each area is used to simultaneously display different processing targets.

Although the display position of such a window is often moved, it is desirable that the displayed contents of the window remain consistent regardless of the display position.

[Conventional technology]

FIG. 3 is a block diagram showing an example of the configuration of a graphic display device.

The graphic processing section 1 processes predetermined input data to generate graphic data for display, and writes the generated graphic data into the memory of the display section 2, thereby displaying it on a CRT display device or the like of the display section 2.

The display device is a so-called bitmap display that displays by dots arranged on the display surface at an appropriate density, and the position of the display dots is set at the upper left corner of the display surface as the origin, as shown in FIG. 4, for example. Specified by physical coordinate values.

Draw a rectangular figure 5 on this display screen as shown in the figure,
When hunting diagonal lines etc. inside this figure,
The graphic processing unit 1 generates hunting designation information and passes it to the hatching processing unit 3.

The hatching specification information, for example, sets the hatching range to figure 5.
The starting position 7 of the original pattern 6 for drawing hunting is specified by the coordinates of the upper left corner and the length in the X and Y axis directions, and the starting position 7 is specified by the coordinates of an appropriate position close to the hunting range. do.

The hatching processing unit 3 uses known processing based on the above specifications to generate display information for tracing the inside of the rectangular figure 5 with a hatching pattern as illustrated in the figure, and writes it into the memory of the display unit 2.

Here, in order to prevent the hatching patterns of multiple figures displayed on one screen from being misaligned, a pattern boundary 10. is used to limit the starting position of the original pattern. 11 is provided on the physical coordinates as shown.

If the original pattern is made to be able to perform uniform hunting by manipulating the original pattern 6 as described above, the starting position 7 of the original pattern is set to the boundaries 10 and 11 in the X and Y directions as shown in the figure. By specifying this at the intersection of , it is possible to prevent pattern deviation from occurring between any huntings within the screen.

[Problem that the invention seeks to solve]

If the figure is displayed in a known window, indicated at 12 in FIG.
When moving to the position shown as The window display can be moved, and the original figure 5 is displayed like figure 15.

For example, when a new figure 14 is drawn in this window 13 and hatching is performed, the hunting of the figure 14 is based on the boundary 10. based on the physical coordinates as described above.
11 as a reference, and the starting position is specified by the original pattern.

On the other hand, the movement from window 12 to window 13 is performed to any necessary position regardless of the boundary of the hatching pattern, so the hatching pattern of figure 15 is generally based on the boundary January 0111. There is a problem in that the screen tends to deviate from the original pattern, resulting in a screen that is difficult to see.

[Means for solving problems]

FIG. 1 is a block diagram showing the configuration of a graphic display device of the present invention.

In the figure, 2 is a display section, 3 is a C/7 processing section, 2
0 is a graphic processing unit that manages the boundaries of the hatching pattern using logical coordinates fixed in the window; 21 is a graphic processing unit that converts the logical coordinate values of the hatching specification information generated by the graphic processing unit 20 into physical coordinate values; This is a coordinate transformation unit that passes the data to the hatching processing unit 3.

[For production]

When displaying a window, the graphic processing unit 20 sets logical coordinates that are fixed at appropriate relative positions to the display position of the window, and maintains and manages the logical coordinates so that the relative positions do not change even if the window is moved. .

In the hunting process for the figure in the window, the original pattern start position of the hatching pattern is determined by a boundary based on logical coordinates, and hatching designation information is passed to the coordinate conversion unit 21 together with the positional information of the logical coordinates.

The coordinate conversion section 21 converts the logical coordinate values of the hatching specification information into physical coordinate values using the position information of the logical coordinates and passes the converted coordinates to the hatching processing section 3. Therefore, the hatching processing section 3 converts the hunting display information as in the past. It is generated and written and displayed on the display section 2.

With the above method, the hunting pattern of figures within the window is managed by the boundary whose relative position remains unchanged even if the window moves, and the pattern does not shift.

〔Example〕

In FIG. 1, a graphic processing section 20 has the same functions as the conventional graphic processing section 1 except as described below, and a display section 2.
And the hunting process 3 is the same as the conventional one.

When displaying a window, the graphic processing unit 20 provides fixed logical coordinates with respect to the display position of the window.

The position of the logical coordinates is set, for example, by assuming the position of the origin of the original image displayed in the window, setting the relative position of that origin to the window as the origin of the logical coordinates, and setting it as a coordinate having a coordinate axis parallel to the physical coordinates. The position is managed by the physical coordinate values of the origin, and when the window is moved, etc., the physical coordinate values of the origin are updated.

FIG. 2 is a diagram illustrating the relationship between the window 30 and logical coordinates depending on the display screen.

As shown in the figure, logical coordinates with the origin 31 are logically set at an appropriate position in the upper left of the window 30,
The physical coordinate value (xo+yo) of the origin 31 is calculated by the graphic processing unit 20.
Keep it within the corresponding window.

When hatching the figure 32 in the window 30, the boundary that determines the starting position of the original pattern for that purpose is set on the logical coordinates of the origin 31 at the illustrated boundary 33.
．． Set it like 34.

Based on this boundary, the original pattern starting position 35 is determined as in the conventional case, and the hatching designation information is passed to the coordinate conversion section 21 together with the position information of the logical coordinates.

The coordinate conversion unit 21 converts the logical coordinate values of the hunting specification information into physical coordinate values using the physical coordinate values of the origin, which is the position information of the logical coordinates, and passes the converted physical coordinate values to the hatching processing unit 3. generates hatching display information and writes and displays it on the display section 2 as in the conventional manner.

In the example shown in the figure, the display information of the figure generated by the figure processing section 20 is also expressed in logical coordinate values, and the coordinate conversion section 21 converts it into physical coordinate values and passes it to the display section 2. .

When moving the window 30, for example, to the position of the window 36 in FIG. Assuming that the robot moves to the origin 37, the physical coordinate value of the origin, which is the position information of logical coordinates, is updated to the value of X++y+ shown in the figure and held.

Therefore, when a figure 39 with hunting is drawn in the window 36, the starting position of the original pattern is set to the origin 37.
By determining the boundaries 40 and 41 provided based on the logical coordinates of , a pattern is drawn that does not deviate from the hunting of the figure 3 days moved from the window 30.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, the hatching pattern of the figure displayed in the window of the figure display device does not always shift even if the window is moved, so that the figure display quality is improved. It has a significant industrial effect of improving.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing the configuration of the present invention, Fig. 2 is an explanatory diagram of the display screen of the present invention, Fig. 3 is a block diagram of a conventional configuration example, and Fig. 4 is an explanatory diagram of the conventional display screen. . In the figure, 1.20 is the figure processing section, 2 is the display section, 3 is the hunting processing section, 5.14.15.32.3〆, 39 is the figure, 6 is the original pattern, 7.35 is the start position, 10 .11.33.
34.40.41 is the boundary, 12.13.30.3
6 is the window, 2nd is the coordinate conversion part, 31.37
indicates the origin.

Claims (1)

[Claims] A window is provided within the display screen, a figure is displayed within the window, and the display position of the figure, the start position of the boundary of the hatching pattern, and the repetition range of the pattern are specified. A graphic display device having a function (3, 2) of displaying the hatching pattern in the window, comprising means (20) for managing the boundary position of the hatching pattern using logical coordinates fixed to the window, and a logical coordinate value of the boundary. 1. A hatching pattern display processing method, comprising means (21) for converting the coordinates into physical coordinate values fixed on the display surface to designate the position of a boundary for displaying the hatching pattern.