JP3554250B2 - Graphic display method and graphic display device - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a graphic display method and a graphic display method, and more particularly to a graphic display method and a graphic display device capable of highlighting and displaying a part of graphic elements constituting a display graphic.
[0002]
[Prior art]
Conventionally, as a method of highlighting a graphic, for example, a method disclosed in Japanese Patent Application Laid-Open No. 5-189181 is known. Japanese Patent Application Laid-Open No. 5-189181 has a means for storing normal graphic display data and a means for storing highlighted display data which is a difference from the stored data. The display is emphasized.
[0003]
[Problems to be solved by the invention]
However, the technique described in Japanese Patent Laid-Open No. Hei 5-189181 requires that difference data be stored for all graphics that are displayed differently from normal display. However, it is not suitable for a case where a large number of graphics other than a graphic to be emphasized are changed to an inconspicuous color, instead of displaying a graphic to be emphasized in a conspicuous color.
SUMMARY OF THE INVENTION It is an object of the present invention to provide a graphic display device capable of changing display attribute values of graphics other than a part of graphics left in a normal display state in a large number of graphics at a relatively high speed. It is in.
[0004]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a process for storing a display attribute of a graphic in each graphic record as an attribute number and displaying the graphic using an attribute value for each attribute number separately stored in an attribute table. In pre-processing, for a graphic to be displayed with the current attribute value, the attribute number of the graphic record is rewritten to a save attribute number having the same attribute value, On the other hand, by rewriting attribute values in the attribute table, a desired display result can be obtained without changing attribute numbers in a large amount of graphic data.
[0005]
That is, in the graphic display method according to the present invention, a step of designating a part of a graphic element group constituting a display drawing and changing an attribute number representing a display attribute of the designated graphic element to an attribute number used for special display. A step of rewriting an attribute value of an attribute number other than the attribute number used in the special display of the attribute table for associating the attribute number with the attribute value; and a step of displaying a graphic element using the attribute value of the attribute table. It is characterized by including.
[0006]
If the attribute value of the attribute number used during special display is the same as the attribute value before the attribute number is changed, some of the specified figures are left in the normal display state, and the display attributes of other figures are relatively fast. Can be changed to
When the display attribute is a display color, by rewriting the attribute value of a graphic element other than the specified graphic element to a low-luminance attribute value or by rewriting the attribute value to display gray, the display attribute is not a part of the specified graphic. Can be changed relatively quickly to an inconspicuous display color and highlighted.
[0007]
A graphic display device according to the present invention is based on a graphic record including an attribute table including an attribute number indicating an attribute of each graphic element constituting a display drawing, and an attribute table for associating the attribute number with an attribute value. In a graphic display device including a display unit for displaying a graphic, the attribute table has an area storing attribute values for normal display and a save area for saving attribute values for normal display, and forms a display drawing. Element designating means for designating a part of the graphic element group to be saved, and saving the attribute numbers of the graphic records of the graphic elements specified by the graphic element designating means in association with the attribute values of the attribute numbers. A means for rewriting the attribute number of the area, and a means for rewriting the attribute value other than the save area in the attribute table. And having a function of changing the display state of the graphical elements.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be specifically described with reference to the drawings. Here, a case where the display color of a display graphic is changed by taking a display color as an example of the display attribute will be described.
FIG. 1 is a block diagram showing a configuration example of a graphic display device according to the present invention. As shown in FIG. 1, the present graphic display device includes a processing device 1 for performing input / output of graphic data and display processing of a graphic, a graphic display 2 for displaying a graphic, and a graphic data storage for storing graphic data. It comprises a file 3 and a memory 4 for storing various attribute tables and the like for managing attribute numbers and attribute values for graphic display in association with each other. The processing device 1 includes a data access unit 11 and a display processing unit 12. Further, the processing device 1 is connected to input devices such as a keyboard 5 and a mouse 6 for designating graphics and performing various inputs.
[0009]
The memory 4 has a display graphic table 41 for temporarily storing graphic data for display processing, a color table 42 for holding correspondence between color numbers and RGB values, a line type number and a line type. A line type table 43 for holding the correspondence, a character font table 44 for holding the correspondence between the character font numbers and the character fonts, and a selected figure table 45 for temporarily storing the figure numbers of the selected figures are stored. Have been. Here, the figure numbers are numbers stored in the figure number area in the figure record shown later in the order in which the figures are drawn. The display graphic table 41 is a copy of the contents of the graphic data storage file 3 used only for displaying graphics, and the contents are not written in the graphic data storage file 3. That is, the graphic data storage file 3 which is the original data is prepared so as not to be rewritten only for temporary change of the display attribute. The display graphic table 41, the color table 42, the line type table 43, the character font table 44, and the like may be stored as individual files on the disk, but the processing can be performed at a higher speed if they are stored in the memory.
[0010]
FIG. 2 shows an outline of the graphic data stored in the display graphic table 41. In the display graphic table 41, graphic data is stored in a graphic record format of a line segment record 210, a polygonal line record 220, a surface record 230, and a character record 240 according to the type of the graphic. In the figure number area of each figure record, figure numbers are assigned in the order in which the figures were drawn.
[0011]
The line segment record 210 includes a record length 211, a graphic number 212, a graphic type 213, a color number 214 of a display color of a coin, a line type number 215 of a display line type of a line, a start point coordinate 216, and an end point coordinate 217. The record length stores the length of the record (the number of bytes). The graphic type 213 stores an identification number indicating a line segment. The color numbers will be described later. The polygonal line record 220 includes a record length 221, a graphic number 222, a graphic type 223, a color number 224 of a polygonal line display color, a line type number 225 of a polygonal line display line type, a number of constituent points 226, and coordinate data (227 to 229). The surface record 230 includes a record length 231, a graphic number 232, a graphic type 233, a color number 234 of a display color of the surface, a line type number 235 of a display line type of the outer frame of the surface, a number of constituent points 236, and coordinate data for the number of constituent points. (237-239). The character record 240 includes a record length 241, a graphic number 242, a graphic type 243, a character display color number 244, a character font number 245, a character size number 246, reference point coordinates 247 for arranging characters, a number of characters 248, and a number of characters. (249-250).
[0012]
These graphic records may be classified into a plurality of layers and managed, or may have an index for searching for a desired record at high speed. Further, in the present embodiment, it is assumed that the contents of the display graphic table 41 include specific graphic configuration data such as coordinate values as shown in FIG. Only the display attributes are stored, and a copy of the graphic data storage file 3 is separately provided as a work table for graphic editing. The coordinate values and the like for defining the graphic are based on the graphic numbers based on the graphic numbers. A method of reading from the work table may be adopted.
[0013]
FIG. 3 shows an outline of the color table 42. The color table 42 includes a color number 310 and corresponding RGB values 320 to 340. In the example shown here, the intensity of each of R, G, and B is represented between 0 and 255. The color numbers 0 to 7 correspond to black, white, blue, light blue, green, yellow, red, and purple, respectively. Here, the background color of the screen is black, and the display colors of the figures are color numbers 1 to 7. One of seven colors. The color numbers 101 to 107 are used to save the RGB values for highlighting. In the initial state, the same RBG values as the color numbers 1 to 7 are stored.
[0014]
FIG. 4 is a flowchart of a process for displaying a graphic stored in the display graphic table 41 on the graphic display 2 in accordance with the contents of each graphic record and the contents of the color table 42.
First, one record is read from the display graphic table 41 (step 401), and the color number in the record is referred to (step 402). Next, an RGB value corresponding to the color number is obtained from the color table (step 403), and a graphic is drawn using the obtained RGB value (step 404). This process is repeated from the first graphic record to the last graphic record of the display graphic table 41 (step 405).
[0015]
FIG. 5 shows that some of the graphics stored in the display graphics table 41 are displayed in a normal display color, and other graphics are displayed at low luminance, thereby emphasizing some graphics. 6 is a flowchart of a process for displaying the image. The processing from step 505 to step 509 in FIG. 5 is the same as the processing from step 401 to step 405 in FIG. 4, and the following processing is performed as pre-processing.
[0016]
First, a figure to be highlighted is specified, and its figure number is registered in the selected figure table 45 (step 500). The selected figure table 45 is an area for storing a figure number of a designated figure. At this time, the figure can be specified by inputting coordinates from a mouse or keyboard, etc., and sequentially specifying individual figures at that position, or by inputting coordinates from a mouse, keyboard, etc. , Oval or other range with closed figure shape, select a figure within or within the range, search for a figure based on the figure type, select and specify, or add basic attributes (color , Line type, character font, drawing layer, etc.) and user-defined attributes (name, address, building age, amount, etc.) Various methods, such as a method of selecting all the graphics in a continuous relationship based on the graphics selected by the various selection methods described above, and a method combining them may be used.
[0017]
FIG. 5 shows a method of registering the graphic number of the selected graphic in the selected graphic table 45 and reading the graphic record of the graphic to be emphasized from the display graphic table 41 based on the registered graphic number. Alternatively, other methods may be used. For example, a selection flag (default value is off) is provided for each graphic record in the display graphic table 41 without using the selected graphic table, and when a graphic is selected, the selection flag of the selected graphic record is turned on to read the graphic. At times, a method of examining all graphic records in the graphic table and reading out a graphic whose selection flag is ON may be used. However, the method of providing the selection flag in the graphic record in the display graphic table 41 is inefficient because the selection flags in all the graphic records must be referred to when the target graphic record is read.
[0018]
Next, a graphic record having the same graphic number as the graphic number stored in the selected graphic table 45 is read from the display graphic table 41 as the graphic record of the graphic to be highlighted (step 501). The color number in the read graphic record is rewritten to a value obtained by adding 100 to the original color number, and is returned to the display graphic table 41 (step 502). This is repeated for all the graphics to be highlighted (step 503). Here, the value 100 added to the color number is an offset value between the color numbers 1 to 7 and 101 to 107 in which the same RGB value is stored in the color table 42. That is, the value to be added here must be determined according to the offset value of the attribute number (here, the color number) that stores the same attribute (here, the RGB value). For example, when the same RGB value is set for color numbers 1 to 7 and 201 to 207, 200 is added.
[0019]
FIG. 6 shows an example of rewriting a color number in a graphic record. In FIG. 6, the color number of the line connecting the coordinates (100, 100) to the coordinates (500, 500) is rewritten from 3 to 103.
In the above-described processing from selecting a graphic to be highlighted and rewriting its color number, the color number in the graphic record corresponding to the selected graphic is rewritten each time the graphic is selected, without going through the selected graphic table 45. Although a method is conceivable, it is necessary to add a determination process when a certain figure is selected twice, and the process becomes complicated.
[0020]
Next, the RGB values of the color numbers 1 to 7 in the color table 42 are rewritten to 65% of the original values (step 504). FIG. 7 shows the color table after rewriting the RGB values. Here, the value of 65% that is multiplied by the RGB value is a value described as an example for uniformly reducing the RGB value, and does not necessarily need to be 65%.
[0021]
As a result, the color numbers of the graphic to be highlighted are 101 to 107, and the RGB values remain unchanged from the original data. On the other hand, the other figures have the same color numbers as the original data, but the RGB values for the color numbers 1 to 7 in the color table 42 have been rewritten to 65% of the original values, so that the display color becomes low luminance. .
[0022]
To stop highlighting and return to the original display color, subtract 100 from the color number of the highlighted figure and return to the original color number, and change the RGB values of the color numbers 1 to 7 in the color table 42. , The RGB values of the color numbers 101 to 107 may be returned.
In the example described above, some graphics other than the specified graphics are displayed at low luminance, and some graphics are highlighted. The same applies to the case of displaying with.
[0023]
FIG. 8 shows some of the graphics stored in the display graphics table 41 in a normal display color, and the other graphics are grayed out to highlight some of the graphics. It is a flowchart of a process to make it. The difference from the case of FIG. 5 is that the RGB values of the color numbers 1 to 7 in the color table 42 are made uniform (130, 130, 130) in step 704. Again, the value (130, 130, 130) is an example of gray display, and need not necessarily be (130, 130, 130). FIG. 9 shows the state of the color table 42 at this time, and FIG. 10 shows an example of the display result.
[0024]
As described above, in this example, the display state of the graphic other than the graphic to be highlighted can be changed only by rewriting the attribute value 7 (color) × 3 (R, G, B values) = 21 times.
Although only the color is described here as the display attribute, the display number can be applied to those display attributes by using other display attributes such as a line type and a character font for the attribute number and the attribute value. In addition, a specified value may be used as a display attribute assigned to a graphic other than the graphic to be highlighted, or an operator may specify the display attribute.
[0025]
【The invention's effect】
As described above, according to the present invention, when the display state of some of a large number of figures is not changed and the display states of other figures are changed, a limited number of figures in the attribute table are changed. By rewriting only the attribute value, the object can be achieved without changing the display attribute for all of the large amount of graphic data.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration example of a graphic display device according to the present invention.
FIG. 2 is an explanatory diagram of each record format of graphic data in a graphic table.
FIG. 3 is an explanatory diagram of a color table.
FIG. 4 is a flowchart showing a processing procedure of graphic display processing.
FIG. 5 is a flowchart showing an outline of a process for displaying a part other than a figure at low luminance.
FIG. 6 is an explanatory diagram of an example of rewriting a color number in a graphic record.
FIG. 7 is an explanatory diagram showing an outline of a color table when displaying a part other than a figure at low luminance.
FIG. 8 is a flowchart showing an outline of a process of displaying a part other than a figure in gray.
FIG. 9 is an explanatory diagram showing an outline of a color table when displaying other than a part of figures in gray.
FIG. 10 is an explanatory diagram showing a display example in which parts other than some figures are displayed in gray.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Processing apparatus, 2 ... Graphic display, 3 ... Graphic data storage file, 4 ... Memory, 5 ... Keyboard, 6 ... Mouse, 11 ... Data access part, 12 ... Display processing part, 41 ... Display graphic table, 42 ... Color table, 43: Line type table, 44: Character font table, 45: Selected graphic table

Claims (5)

Specifying a part of a group of graphic elements constituting a display drawing;
Changing the attribute number representing the display attribute of the specified graphic element to the attribute number used for special display;
Rewriting the attribute value of the attribute number other than the attribute number used at the time of the special display of the attribute table that associates the attribute number with the attribute value;
Displaying a graphic element by using an attribute value of the attribute table. 2. The graphic display method according to claim 1, wherein an attribute value of the attribute number used at the time of the special display is the same as the attribute value before the attribute number is changed. 3. The graphic display method according to claim 1, wherein the display attribute is a display color, and an attribute value of a graphic element other than the specified graphic element is rewritten to a low-luminance attribute value. 3. The graphic display method according to claim 1, wherein the display attribute is a display color, and an attribute value of a graphic element other than the specified graphic element is rewritten to an attribute value for displaying gray. . Storage means for storing a graphic record including an attribute number indicating an attribute of each graphic element constituting a display drawing, and an attribute table for associating the attribute number with an attribute value; and a display means for displaying a graphic based on the graphic record. In a graphic display device including
The attribute table has an area storing attribute values for normal display and a save area for saving the attribute values for normal display, and is a graphic designating a part of a graphic element group constituting the display drawing. Element designating means, and means for rewriting the attribute number of the graphic record of the graphic element specified by the graphic element specifying means to the attribute number of the save area associated with the same attribute value as the attribute value of the attribute number; Means for rewriting attribute values other than the save area in the attribute table, and having a function of changing a display state of a graphic element other than the graphic element specified by the graphic element specifying means. .

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