JP3060497B2 - Marker segment registration / redraw method - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a graphic processing system, and more particularly, to registering a marker to a segment in a graphic processing system having a graphic redrawing function Registration) and a marker segment registration / redrawing method for redrawing a segment including a segment relating to a marker.

The graphic processing system according to the present invention which waits for a graphic redrawing function has the following features.

Graphic drawing command (command for instructing line drawing and marker drawing from user program) and drawing attribute command (designation of drawing method such as line type and marker type used for drawing by graphic drawing command) Is generated from a user program), and those commands are stored and managed in a segment in a segment storage area (a storage area whose contents cannot be changed).

It has a function of collectively outputting the contents of some segments related to the user program and performing redrawing in accordance with an instruction from the user program.

An attribute designation method of managing a marker drawing attribute command such as a marker type and a marker size (a drawing attribute command that operates only on a marker graphic drawing command) as a bundle table (marker bundle table) for each marker and selecting it by an index Having.

 The marker is drawn by the line segment sequence.

[Conventional technology]

Conventionally, in this type of marker segment registration / redrawing method, when a user program issues a marker segment registration request (a request for registration of a marker (generally a polymer) to a segment), the The marker drawing position (coordinates such as the center point of the marker) is registered in the segment, and each time a segment redraw request (a request to execute a command in some segments related to the user program) is made from the user program, the marker is displayed. The marker has been developed into a plurality of line segments based on the drawing position of the marker registered in the related segment to draw the marker.

[Problems to be solved by the invention]

In the above-described conventional marker segment registration / redrawing method, it is necessary to develop the marker into a plurality of line segments every time a segment redrawing request is made from a user program, so that the segment redrawing process for the marker is efficiently performed. (Particularly, the inefficiency is remarkable when a segment redraw request is repeatedly made).

An object of the present invention is to provide a marker segment registration / redrawing method capable of efficiently performing a segment redrawing process for a marker in view of the above points.

[Means for solving the problem]

According to the marker segment registration / redrawing method of the present invention, in a graphic processing system having a graphic redrawing function, when a marker segment registration request is made, a marker drawing position is registered in a segment and based on the marker drawing position. Marker segment registration means for expanding a marker into a plurality of line segments and registering a line segment expansion list; and a segment when a marker segment conversion request is made for a marker registered in a segment by the marker segment registration means. Segment conversion changing means for registering a conversion matrix in the state table; attribute changing means for changing the contents of the bundle table for the marker when a marker attribute change request is made for an already set marker attribute; The change information based on the execution of the segment conversion change unit and the attribute change unit is stored in a change information list. Conversion information holding means, a segment redrawing means for checking the presence / absence of a change information list for the marker when a segment redrawing request is made, and a change for the marker by the segment redrawing means. A line development list changing unit that, when it is confirmed that there is an information list, develops the marker again into a plurality of line segments and updates the line development list;

[Action]

In the marker segment registration / redrawing method of the present invention,
When the marker segment registration unit issues a marker segment registration request, the marker drawing position is registered in the segment, the marker is developed into a plurality of line segments based on the marker drawing position, and a line segment development list is registered, and the segment conversion is performed. When a change unit issues a marker segment conversion request for a marker registered in a segment by the marker segment registration unit, the conversion unit registers a conversion matrix in the segment state table;
When a marker attribute change request is made for an attribute of a marker that has already been set, the attribute change unit changes the contents of the bundle table for that marker, and the change information holding unit changes the segment conversion change unit and the attribute change unit. A change information list based on the execution is held in a change information list, and when a segment redrawing request is made, a segment redrawing process is performed after confirming the presence or absence of a change information list related to a marker when a segment redrawing request is made. When it is confirmed by the segment redrawing means that there is a change information list relating to the marker, the changing means renews the marker into a plurality of line segments and updates the line segment expansion list.

〔Example〕

Next, the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing a configuration of an embodiment of a marker segment registration / redrawing method according to the present invention. The marker segment registration / redrawing method according to the present embodiment includes a user program 10, a graphic processing system 20, and a graphic display device 40.
It is comprised including.

The graphic processing system 20 includes a marker segment registration unit 21
A segment status table storage area 22, a segment conversion change means 23, an attribute change means 24, a bundle table storage area 25, a change information holding means 26, a change information list storage area 27, and a segment storage area 28. , A segment redrawing unit 29, a line segment expansion list changing unit 30, and a line segment expansion list storage area 31.

The user program 10 sends to the graphic processing system 20 a marker segment registration request, a marker segment conversion request (a request for segment conversion (parallel movement or rotation, etc.) for a segment for which a marker is registered), a marker attribute change request ( A request to change the attributes of the markers registered in the bundle table) and a segment redraw request are made.

FIG. 2 is a flowchart showing the processing of the marker segment registration means 21. This processing is performed at the drawing position registration step 201.
And a line segment development step 202 and a line segment development list storage area registration step 203.

FIG. 3 shows segment conversion changing means 23 and attribute changing means 24.
6 is a flowchart showing the processing of the change information holding means 26.
This processing includes a segment state table registration step 301, a bundle table attribute change step 302, and a change information list storage step 303.

FIGS. 4A and 4B are flowcharts showing the processing of the segment redrawing means 29 (including the processing of the line segment development list changing means 30) when a segment redrawing request is made. This processing is performed in the change information list empty determination step 401.
A segment command readout step 402, an all segment processing end determination step 403, a polymer command determination step 404, a command output step 405,
Line segment development list output step 406, segment command readout step 407, all segment processing end determination step 408, and polymer command determination step 409
A command processing step 401; a change information list storage area inquiry step 411; a marker type change presence / absence determination step 412; a marker size change / segment conversion presence / absence determination step 413;
14, a line development list output step 415, a line development list update step 416, a line development list pointer change step 417, and a change information list deletion step 418.

Next, the operation of the thus configured marker registration / redrawing method of the present embodiment will be described.

When the user program 10 issues a marker segment registration request to the graphic processing system 20, the marker segment registration means 21 in the graphic processing system 20 is called.

The marker segment registration unit 21 registers the drawing position of the marker specified by the marker segment registration request in a segment in the segment storage area 28 (Step 201),
Based on the drawing position, the marker is developed into a plurality of line segments (step 202), and the information indicating the plurality of obtained line segments (line segment expansion list) is registered in the line segment expansion list storage area 31 (step 203).

When the user program 10 issues a marker segment conversion request to the graphic processing system 20, the segment conversion changing means 23 in the graphic processing system 20 is called.

The segment conversion changing means 23 registers the conversion matrix for the segment relating to the marker segment conversion request (the conversion matrix for the marker to be subjected to the segment conversion) in the segment status table corresponding to the segment in the segment status table storage area 22 (step). 301).

When the user program 10 issues a marker attribute change request to the graphic processing system 20, the attribute changing means 24 in the graphic processing system 20 is called.

The attribute changing means 24 changes the value of the attribute in the bundle table for the marker related to the marker attribute change request in the bundle table storage area 25 (step 302).

When the segment conversion change means 23 or the attribute change means 24 is called, the change information holding means 26 is called following the call.

The change information holding unit 26 stores, in the change information list storage area 27, a change information list indicating the contents of the segment conversion performed by the segment conversion changing unit 23 or the details of the change of the bundle table performed by the attribute changing unit 24. (Step 303).

When a segment redraw request is made from the user program 10 to the graphic processing system 20, the segment redrawing means 29 in the graphic processing system 20 is called.

 The segment redrawing unit 29 performs the following processing.

First, the contents of the change information list storage area 27 are checked, and all change information lists relating to the segment redraw request (all change information lists relating to the user program 10) are obtained.
It is determined whether or not the content is empty (step 401).

If it is determined in step 401 that the contents of all the change information lists are empty, the processing from step 402 shown in FIG. 4A is executed.

That is, as shown in FIG. 4 (a), the commands in all the segments related to the user program 10 in the segment storage area 28 are sequentially read (step 402), and the commands in all the segments related to the user program 10 are read. It is determined whether such processing has been completed (step 40).
3).

If it is determined in step 403 that the processing related to the commands in all the segments has been completed, the processing ends.

If it is determined in step 403 that the processing relating to the commands in all the segments has not been completed, it is determined whether or not the command read in step 402 is a polymer command (a graphic drawing command relating to a plurality or a single marker). Is determined (step 404).

If it is determined in step 404 that the command is a polymer command, the contents of the line segment expansion list corresponding to the segment where the polymer command exists are sequentially output to the graphic display device 40 (step 406), and again. Control is transferred to the process of step 402.

If it is determined in step 404 that the command is not a polymer command (the command is a command related to a general graphic (line segment)), the command is output to the graphic display device 40 as it is (step 405). Control is transferred to the process of step 402 again.

If the contents of all the change information lists relating to the segment redraw request are empty, the line segment expansion list storage area
It is possible to unconditionally read (as is) the line segment expansion list registered in 31 and output it, and it is possible to greatly improve the efficiency of the segment redrawing process for the marker as compared with the conventional technology. .

If it is determined in step 401 that all of the change information lists are not empty, the process from step 407 shown in FIG. 4B is executed.

That is, as shown in FIG. 4 (b), commands in all the segments relating to the user program 10 in the segment storage area 28 are sequentially read (step 407), and the commands relating to the commands in all the segments relating to the user program 10 are read. It is determined whether the processing is completed (step 40
8).

If it is determined in step 408 that the processes related to the commands in all the segments have been completed, all the change information lists related to the segment redraw request described above are deleted (step 418), and the process ends (FIG. 4). (A)).

If it is determined in step 408 that the processing for the commands in all the segments has not been completed, it is determined whether the command read in step 407 is a polymer command (step 409).

If it is determined in step 409 that the command is not a polymer command, the command (a command relating to a general graphic) is output to the graphic display device 40 as it is (step 410), and control is transferred to the processing of step 407 again. .

If it is determined in step 409 that the command is a polymer command, the contents of the change information list storage area 27 are queried (step 411), and based on the contents, the type of marker (marker type) associated with the polymer command is inquired. It is determined whether there is a change in ()) (step 412).

If it is determined in step 412 that there is a change in the marker type, the line segment expansion list changing unit 30 is called (the line segment expansion list conversion unit 30 sets the marker drawing position in the segment where the polymer command exists). Based on this, the marker is re-developed into a plurality of line segments so as to be the changed marker type, and the line segment development list is updated) (step 416).

When the processing of the line segment expansion list changing means 30 in step 416 ends, the pointer to the line segment expansion list in the segment is changed to reflect the processing of the line segment expansion list changing means 30 (step 417).

If it is determined in step 412 that there is no change in the marker type, then based on the contents of the change information list storage area 27 queried in step 411, there is a change in the marker size of the marker associated with the polymer command or a segment conversion. It is determined whether or not (step 413).

If it is determined in step 413 that the marker size has been changed or the segment has been converted, the line segment development list changing unit 30 is called (the line segment expansion list changing unit 30 reads the line corresponding to the segment in which the polymer command exists). The coordinate values of the line segments in the line segment list are recalculated so as to conform to the changed marker size and segment conversion, and the line segment list is updated (step 414).

If the processing of step 417 is completed, the processing of the line segment development list changing means 30 in step 414 is completed, or if it is determined in step 413 that there is no change in the marker size or no segment conversion, the above-mentioned polymer command The contents of the line segment development list corresponding to the segment in which is present are sequentially output to the graphic display device 40 (step 41).
5) The control is shifted to step 417 again.

Next, a specific operation of the marker segment registration / redrawing method of the present embodiment will be described with reference to FIGS. 5 (a) to 5 (f).

FIG. 5A shows the contents of the bundle table storage area 25 before the processing described below is performed. In the bundle table of the “index 1”, a marker type “asterisk”, a marker size “10 dots”, and a marker color “white” are set.

FIG. 5 (b) is a diagram showing an example of a mode of processing of the marker segment registration means 21.

The command in the figure is a graphic drawing command (polymer command) sent from the user program 10 as a marker segment registration request. Based on this command, one segment (segment in the figure) is generated and registered in the segment storage area 28, and based on the drawing position of the marker in the segment, the marker is developed into a plurality of line segments, and the line segment is expanded. A line segment expansion list indicating a column is registered in the line segment expansion list storage area 31 (an image of a marker expanded into a line segment is also shown in the figure). At this time, a pointer to the line segment development list is registered in the segment together with the type and position of the drawing.

FIG. 5C is a diagram showing an example of a mode of processing of the attribute changing unit 24 and the change information holding unit 26.

The commands in the figure are drawing attribute commands sent from the user program 10 as marker attribute change requests. Based on this command, the contents of the bundle table of “index 1” in the bundle table storage area 25 shown in FIG. 5A are changed. Further, reflecting the change, a change information list having change information including the type of the table to be changed “bundle table”, the index “1”, and the change attribute “marker type” is stored in the change information list storage area 27. Generated.

FIG. 5 (d) is a diagram showing an example of the processing of the segment conversion changing means 23 and the change information holding means 26.

The commands in the figure are drawing attribute commands sent from the user program 10 as a marker segment conversion request. Based on this command, a process of registering the conversion matrix in the segment status table (segment status table corresponding to the segment to be converted) in the segment status table storage area 22 is performed. Furthermore, reflecting the registration process, the type of the table to be changed, “Segment status table (segment conversion)”
A change information list having change information including the segment name “segment” is generated in the change information list storage area 27.

FIG. 5 (e) shows a case where the segment (segment) and line segment development list of FIG.
An example of the mode of processing of the segment redrawing means 29 and the line segment development list changing means 30 when a segment redrawing request is made after the bundle table in 25 has been changed as shown in FIG. FIG.

By this segment redraw request, the contents of the change information list storage area 27 are confirmed, a new line segment expansion list is created, and the pointer to the line segment expansion list in the segment is changed. Information including the development list is output to the graphic display device 40.

FIG. 5 (f) shows a request for segment redrawing after the segment (segment) and line segment expansion list of FIG. 5 (b) are generated and the segment conversion of FIG. 5 (d) is performed. FIG. 9 is a diagram showing an example of a processing mode of a segment redrawing unit 29 and a line segment development list changing unit 30 in a case.

In response to this segment redraw request, the contents of the change information list storage area 27 are confirmed, a new line segment expansion list is created, and information including the changed line segment expansion list is output to the graphic display device 40. .

〔The invention's effect〕

As described above, according to the present invention, the segment redrawing list and the change information list are registered and changed and held at the time of the marker segment registration request, the marker segment conversion request, and the marker attribute change request, so that the segment is redrawn. When a request is made, it is checked whether or not there is any change in the marker, and if there is no change, the line segment expansion list can be output as it is to the graphic display device, and the segment redrawing process for the marker can be efficiently performed. (In particular, it is possible to improve the efficiency when the segment redraw request is repeatedly performed).

[Brief description of the drawings]

FIG. 1 is a block diagram showing the configuration of one embodiment of the present invention, FIG. 2 is a flowchart showing the processing of a marker segment registration unit in FIG. 1, FIG. 3 is a segment conversion changing unit in FIG. 4 (a) and 4 (b) are flow charts showing processing of the segment redrawing means and line segment development list changing means in FIG. 1, and FIG. (A)-(f) is a figure for demonstrating a specific process of the marker segment registration / redrawing method shown in FIG. In the figure, 10: user program, 20: graphic processing system, 21: marker segment registration means, 22: segment status table storage area, 23: segment conversion change means, 24: attribute change means, 25 ... Bundle table storage area, 26 ... Change information holding means, 27 ... Change information list storage area, 28 ... Segment storage area, 29 ... Segment redrawing means, 30 ... Line segment development list changing means, 31 ... Line segment expansion list storage area 40... Graphic display device.

Claims (1)

(57) [Claims] In a graphic processing system having a graphic redrawing function, when a marker segment registration request is made, a marker drawing position is registered in a segment, and the marker is divided into a plurality of line segments based on the marker drawing position. Marker segment registration means for expanding and registering a line segment expansion list, and when a marker segment conversion request is made for a marker registered in a segment by the marker segment registration means, the marker is registered in a conversion matrix in a segment status table. Segment conversion changing means for performing, when a marker attribute change request is made for an already set marker attribute, attribute changing means for changing the contents of a bundle table for the marker, the segment conversion changing means, and Change information holding means for holding change information based on execution of the attribute change means in a change information list; Segment redrawing means for performing the redrawing process after confirming the presence or absence of a change information list relating to a marker when a segment redrawing request is made; and confirming that there is a change information list relating to the marker by the segment redrawing means. And a line segment development list conversion means for renewing the marker into a plurality of line segments and updating the line segment development list in the event that the marker has been updated.