JPS60241175A - Graphic processor - Google Patents

Abstract

PURPOSE:To secure the minimum area needed for extraction and shift of the graphic information by using a processing means which can extract only a desired area out of the graphic information stored in a memory part. CONSTITUTION:The maximum/minimum part 6 is set between a memory part 1 and a frame memory part 3. When the graphic information is extracted, the part 6 is started by a prescribed control part in response to an extracting instruction supplied by an operator via a position information input device. Then all vector information on the corresponding graphic information stored in the part 1 are read out to calculate the maximum and minimum values Pxh and Pxl of the direction (x) and the maximum and minimum values Pyh and Pyl of the direction (y) of said graphic information, respectively. Then a rectangular area 11 prescribed by those four values is selected out of the part 1 in the form of an extracting area, and only the graphic information in the area 11 is extracted.

Description

[Detailed description of the invention] [Technical field of invention] The present invention relates to a graphic processing device.

In particular, the present invention relates to a graphic processing apparatus in which a graphic is created in a conversational manner with an operator, and one graphic is extracted after the graphic creation is completed.

[Prior Art] ゛Conventionally, this type of graphic processing device uses position information (coordinate values) and commands (shape, line type, etc.) input by an operator.
A desired line segment is displayed on the screen according to the line width, etc.).

FIG. 1 is a block diagram illustrating a conventional example of this type of graphic processing apparatus that uses a raster scan method.

In FIG. 1, / is a storage unit that stores graphic information;
ko is a vector raster conversion unit for converting graphic information in storage unit I into raster information (also called dot information), and J is a vector raster conversion unit for displaying dot g information converted in the data raster conversion unit. A frame number memory section for storing data, a video generating section for periodically reading out dot information in the frame memory section 3 and converting it into visual information, and! is a display unit using a raster scan method, such as a CRT.

In the conventional device configured as described above, the storage capacity of the frame memory section 3 is usually associated with the number of effective display pixels of the display section 5. Furthermore, the display operation on the display section S is performed independently of the conversion processing of the vector/raster conversion section, and the dot information in the frame memory section 3 is changed, for example, according to the display control signal from the video generation section Hiroshi. ,3
0~q.

It is read out sequentially at a rate of about 100 times per second, and is displayed sequentially as visual information! Sent to . On the other hand, vector
The raster conversion unit reads the graphic information in the storage unit l,
The pixels in the frame memory section 3 corresponding to the graphic information are sequentially converted into bright spots.

This conversion process is basically performed only once for l line segments. For example, when a straight line is to be targeted, a desired straight line segment can be displayed by inputting the coordinate values for the start and end points using a 1-position input means (not shown) and then inputting a straight line drawing command. Become. When a circle is the object, a desired circular portion is displayed by inputting values regarding its center point and radius and then inputting a circle drawing command.

In this manner, in the conventional graphic processing device, a desired graphic is displayed on the display unit 5 according to information input by the operator, and the desired graphic is displayed in the storage unit built in the graphic processing device. The information input by the operator is stored sequentially, and the final figure intended by the operator, such as a predetermined flowchart figure, is displayed on the display section 5, and the storage section/ is filled with necessary information regarding the final figure. All information will be stored with the required 111 orders.

After the above operations are completed, it is possible to not only use the information stored in the storage unit as is, but also to use the figures created with that information as part of a specified document. be. and.

In such a case, unnecessary t
[The parts are cut out and only the necessary parts are extracted and used in the predetermined document. In the conventional device described above, an area for this purpose is secured, and a desired figure is displayed within the secured area.

Hereinafter, a method for creating the above-mentioned document using a conventional device will be explained with reference to FIG. This second
The figure is an illustrative diagram of a display screen at the time of completion of drawing by the conventional apparatus. Normally, after the required drawing is completed, the drawn figure is extracted and moved to a predetermined position within the document. In the above-mentioned conventional apparatus, in order to extract the figure, the operator:
The upper left point PJh and the lower right point PrJ of the rectangular area lθ to be extracted are designated, and the rectangular area 70 portion is extracted using this one point. According to this method, in order to extract a desired figure, it is necessary for the operator to indicate the part to be extracted. In addition, an area where no figure is drawn may be extracted. As described above, with the conventional device as described above, operator intervention is required to extract the desired figure, and it is difficult to secure the minimum necessary area for extracting and transferring the figure. There were disadvantages such as being □.

[Summary of the invention]

The present invention has been made to eliminate the drawbacks of the conventional apparatuses described above, and an object of the present invention is to eliminate the need for operator intervention in order to extract required graphic information, and to extract and extract the graphic information. It is an object of the present invention to provide a graphic processing device in which a minimum area necessary for transfer is secured.

[Embodiments of the invention]

Embodiments of the graphic processing apparatus according to the present invention will be described below with reference to FIGS. 3 to 5. First, FIG. 3 is a block diagram showing the configuration of the embodiment device according to the present invention, and in this FIG. Components indicated by ``-'' correspond to those indicated by the same reference numerals in FIG. 1, and a description thereof will be omitted. Reference numeral 6 denotes a maximum/minimum section, which is provided to be interposed between the storage section l and the frame memory section 3.

In the apparatus according to the embodiment of the present invention having the above-mentioned configuration, when attempting to extract the graphic information shown in Figure 1, in response to an extraction command input by the operator from the position information input device (not shown), The maximum/minimum unit 6 is activated by a predetermined control unit (not shown), reads out all vector information regarding the graphic information stored in the storage unit l, and sets the maximum value Pxh of the graphic information in one direction,
Minimum value PxJ, maximum value Pyh in the y direction, minimum value Pyj
A rectangular area l/ defined by these three values is selected as an extraction area from the storage unit l, and only graphic information within this rectangular area l is extracted.

Although the case of figure extraction has been described above, the present invention is not limited to this, and when a predetermined figure is being created, parts that can be divided into arbitrary desired rectangles can be erased. It can be applied to things like changing attributes (color, line width, line type, etc.). FIG. S is an illustrative diagram of the embodiment of the present invention when applied to a different purpose, in which a rectangular area /J indicated by diagonal lines is generated by a predetermined command from an operator,
This exemplifies that an operation is being performed on this rectangular area.

〔Effect of the invention〕

As described above, according to the present invention, since the necessary minimum figure extraction is performed, there is no need for the operator to instruct the cutting position.

The effects described above can be achieved. Further, the apparatus according to the embodiment of the present invention does not depend on hardware and can be handled entirely by software, and can also be applied to simple graphic processing by a personal computer or the like.

[Brief explanation of drawings]

FIG. 1 is a block diagram illustrating a conventional graphic processing device, FIG. 2 is a diagram illustrating a display screen at the end of drawing by the conventional device, and FIG. 3 is a block diagram illustrating an embodiment of a graphic processing device according to the present invention. , FIG. 5 is an illustrative diagram of the display screen at the end of drawing by the apparatus according to the embodiment of the present invention, and FIG. 5 is an illustrative diagram showing the case where the apparatus according to the embodiment of the present invention is applied to a different purpose. l: Storage unit, co: Vector/raster conversion unit. 3. Frame memory section, da. Video generation section, 6.
・Maximum and minimum part. In each figure, the same reference numerals indicate the same or corresponding parts. Flame 2

Claims (1)

[Claims] (1) A storage section in which graphic information is stored, a vector/raster conversion section that extracts the graphic information in the storage section and converts it into dot information, a frame memory section that stores the bit information, and a frame memory section that stores the bit information. A graphic processing device including a display section that generates and displays graphics corresponding to dot information in a memory section, the graphics processing device comprising a means for extracting only a necessary part of the graphic information in the memory section. Device. (g) In the extraction means, all vector information related to the required graphic information in the storage section is read out, and based on this, a minimum area for extracting the required graphic information is defined. A graphic processing device according to claim 1. (j) Graphical information included in the area defined by the extracting means can be deleted and attributes can be changed. A graphic processing device according to claim 1.