JPH0328984A - Face paint drawing system using hatch pattern - Google Patents

Abstract

PURPOSE:To reduce a face paint area and to increase the face paint processing speed by producing the continuous hatch patterns, segmenting a designated new hatch pattern out of the continuous ones, and applying a face paint drawing process to only a partial area of a bit map memory. CONSTITUTION:At least two continuous hatch patterns 114 to undergo the face pattern drawing processes are used for production of a continuous hatch pattern 115. Then the new hatch patterns 116 of the same size are segmented out of the pattern 115 based on the coordinate value of a face paint subject area/pattern 112, and the face paint drawing process is applied to a partial area of a bit map memory via the pattern 116. Thus a tentative evolving original point SPn of the pattern 115 is set at a point (y) of an area 112 to undergo the face paint drawing process, i.e., an evolving original point. As a result, the necessary face paint area is minimized and the face paint processing speed is maximized.

Description

[Detailed Description of the Invention] [Summary] Cover painting drawing using a hatch pattern that applies protection to areas other than the area to be painted on the bitmap memory and draws the area to be painted in the covered area w4 using a specified hatch pattern. Regarding the method, the purpose is to reduce the area to be painted as much as possible and speed up the painting processing speed, and protect the area other than the area to be painted in the bitmap memory and specify the area to be painted. In the area painting method using a hatch pattern,
a step of generating at least two consecutive hatch patterns to be painted, and a new hatch pattern having the same size as the specified hatch pattern based on the coordinate values of the area to be painted; The method is designed to include the steps of cutting out the area from the pattern, and drawing only the partial area on the bitmap memory that includes the area to be covered by the new hatch pattern.

[Industrial application field]

The present invention relates to an area painting method using a hatch pattern that protects an area other than the area to be painted on a bitmap memory and draws the area to be painted using a specified hatch pattern. [Prior Art] A bitmap memory is a memory that allows writing or reading in pixel units. When printing characters or figures, the pattern of the characters or figures to be printed is written on the bitmap memory. After it is expanded, the process of reading and printing it is performed. Various types of processing may be performed on the figures developed on the bitmap memory, and one of these processes is a filling process that fills a specific area using a specified hatch pattern. There is. FIG. 5 shows a principle diagram of a conventional surface-painting drawing method using a hatch pattern.

In FIG. 5(A), 21 is a bitmap memory, and an area 211 (rectangle ao
+ al + a2, a3 ) to the figure 212 (diamond x
yzw) is expanded. Figure 5 (B) shows various hatch patterns used for surface painting, and their sizes are specified (for example, 32 x 32 dots).
．． When performing surface painting on the figure 212. Protect the area other than the area of figure 212 which is the area to be covered. By applying protection, shape 2, which is the area to be painted
Cover-painting drawing in areas other than area 12 is prevented.

When performing a surface painting, the main scanning direction is from the right to the left of the developable area 211, and the sub-scanning direction is from the top to the bottom, from the upper left (aO point) to the lower right (83 points). , performs surface painting using the specified hatch pattern. Surface painting drawing using the specified hatch pattern is performed over the entire expandable area 211 regardless of the size of the area to be painted, but since it is protected. Only the inside of the figure 212, which is the desired area to be covered, is painted as shown. [Invention tries to solve it! If! [Problem] In the conventional surface-painting drawing method using a hatch pattern, the surface-painting drawing process was performed on the entire developable area 211, regardless of the size of the surface-painting target area, as described above. This means that the position and shape of the area to be painted is arbitrarily specified, but if you try to arbitrarily change the starting position of the hatch pattern to match it, the process becomes complicated, and the process of painting the area becomes complicated. This is because it takes time. However, in the conventional surface painting drawing method using hatch patterns, surface painting is performed on protected areas other than the target area for surface painting, which results in a lot of unnecessary processing and reduces the speed of surface painting drawing processing. There was a problem that the development was hindered. Particularly when the area to be painted is small, this is inconvenient because there is a lot of unnecessary filling and drawing processing.

An object of the present invention is to provide a surface painting drawing method using a hatch pattern that is improved so that the area to be painted is made as small as possible and the surface painting drawing processing speed can be increased. [Means for solving the problems] The means adopted by the present invention to solve the above-mentioned problems are as follows.
This will be explained with reference to FIG. FIG. 1 shows a principle diagram of the present invention.

In FIG. 1(A), 1l is a bitmap memory, and an area 111 (rectangle aO
, al, a2, a3), figure 1, which is the area to be filled
12 (diamond xyzw) is expanded.

113 is indicated by 112, which is the same as the MMC figure to be covered)
is the minimum rectangular area (ABCD) containing . In (a) of FIG. 1(B), reference numeral 114 indicates an example of various hatch patterns used for surface painting, and the size thereof is specified. In FIG. 1(B), 115 shows an example of a continuous hatch pattern generated in the present invention, which is generated by arranging two hatch patterns 114 side by side and making them continuous. ．． 116 shows an example of a new hatch pattern cut out from the continuous hatch pattern 115. Again in FIG. 1(A), SPi is the temporary expansion origin. SP indicating the starting point of development of the new hatch pattern 116 when performing surface painting drawing using the new hatch pattern 116
n is also a provisional development origin, and indicates the development start origin of the new hatch pattern l16 when surface painting is performed on the minimum rectangular area 113 using the new hatch pattern 116. The present invention is configured as follows using the minimum rectangular area 113, continuous hatch pattern 115, new hatch pattern 116, etc. explained above. In other words, in a surface painting drawing method using a hatch pattern in which areas other than the area to be painted on the bitmap memory are protected, and the area to be painted on the area is painted using a specified hatch pattern.
(a) generating a continuous hatch pattern consisting of at least two consecutive hatch patterns to be painted; and (a) creating a new hatch pattern of the same size as the designated hatch pattern based on the coordinate values of the area to be painted. (c) cutting out only a partial area on the bitmap memory including the area to be surface-painted from the continuous hatch pattern, using the new hatch pattern. ．． [Function] The function of the present invention is demonstrated in the area 1 to be coated as shown in FIG. 1(A).
12 (figure xyzw) using the hatch pattern 114 shown in FIG. Note that areas other than the area to be painted 112 on the bitmap memory 11 are protected. (2) By consecutively drawing at least two hatch patterns 114, a continuous hatch pattern 115
(See (a) and (b) in Figure 1 (B)). The hatch patterns in the hatch patterns 114 are selected so that even if the hatch patterns 114 are consecutive, the hatch patterns are continuous as shown in (b) of FIG. 1(B). (2) Based on the coordinate values of the area to be covered 112, a new hatch pattern 116 having the same size as the specified hatch pattern 114 is cut out from the continuous hatch pattern 115.

The temporary development origin SPi of the hatch pattern 114 that performs surface painting on the surface painting target area 112 is determined based on the hatch pattern development origin aO. Generally, it does not coincide with point A, which is the development origin of the hatch pattern of the minimum rectangular area 113 (rectangle ABCD). however,
Resetting the temporary development origin SPi of the hatch pattern 114 to match the development origin A of the hatch pattern in the minimum rectangular area 113 requires more complicated processing than the conventional method, which actually results in a decrease in processing speed. Become. Therefore, the present invention creates a new hatch pattern of the same size as the hatch pattern 114 from the continuous hatch pattern 115 in accordance with the position of the y point of the surface painting target area 112, that is, the position of the development origin A of the hatch pattern of the minimum rectangular area ABCD. 1
15 is cut out, and this new hatch pattern 115 is used as a hatch pattern for both surface and skin applications. New hatch pattern 115
The position (X coordinate value) of the temporary development origin SPn is the position of the y point of the area to be painted 112, that is, the minimum rectangular area 113.
I am defeated by the position (X coordinate {+1!) of the development origin A of the hatch pattern of (rectangle ABCD). (3) A partial area on the bitmap memory including the area 112 to be covered is painted using the new hatch pattern 116.

The area painting is performed from the temporary expansion origin SPn at the upper left toward the lower right as shown in the figure. Since the tentative expansion origin SPn and expansion end point of the new hatch pattern 116 generally do not coincide with points A and B of the minimum rectangular area, the partial area is generally larger than the minimum rectangular area ABCD. however,
Since areas other than the area to be painted 112 (figure xyzw) are protected, the partial area is the minimum rectangular area AB.
Even if the size is larger than the CD, the area painting is performed only on the desired area painting 112. In this way, the temporary development origin SP of the new hatch pattern 115
By matching the position n (X coordinate value) with the position of the y point of the area to be painted 112, that is, the position (X coordinate value) of the development origin A of the hatch pattern of the minimum rectangular area ABCD, the necessary area painting is performed. By minimizing the area, you can achieve the fastest surface painting skin image processing speed. However, the position of the temporary development origin SPn of the new hatch pattern 116 is such that the minimum rectangular area ABC is located inside the new hatch pattern 116.
The position may be selected to include the development origin A of the hatch pattern D. Further, the continuous hatch pattern 115 is the hatch pattern 1
14, but usually two consecutive hatch patterns 114 are sufficient. Note that the above-described surface painting drawing processing procedure is an example of the surface painting drawing processing procedure of the present invention, and the surface painting drawing processing procedure of the present invention is not limited to this. As described above, a continuous hatch pattern consisting of at least two consecutive hatch patterns for surface painting is generated, and a new hatch pattern of the same size as the hatch pattern is cut out from the continuous hatch pattern based on the coordinate values of the region to be painted. Since only the partial area including the area to be covered is painted using the new hatch pattern, it is possible to make the area to be painted as small as possible, and taking into account the cutting process of the new hatch pattern 116. can also speed up the overall surface-painting drawing processing speed. In addition, since the surface painting drawing process is performed only within the minimum rectangular area 113, the area to be protected may be an area other than the figure 112 and within the minimum rectangular area 113. Shape 11 that is
If 2 is small, the area to be protected is greatly reduced, and the processing speed for surface painting drawing can be improved. [Example] An example of the present invention. With reference to FIGS. 1 to 5, an example of surface painting drawing processing in a printing device will be described. Fig. 2 is an explanatory diagram of a printing device used in carrying out one embodiment of the present invention, Fig. 3 is an explanatory diagram of a continuous hatch pattern and a new hatch pattern generation or processing method of the same embodiment, and Fig. 4 is an explanatory diagram of a printing apparatus used in carrying out an embodiment of the present invention. This is an example surface painting drawing process flowchart. FIG. 1 is also used to explain the embodiment of the present invention, and its contents are as already explained in FIG. (A) Structure of the embodiment In FIG. 2, a bitmap memory 1l, an area 111 in which a figure can be developed within it, a full-face painting target area l12 (figure x y z w) to be developed there, a full-face painting target area The minimum rectangular area 113 (rectangle ABCD) including 112 is as described in FIG. It should be noted that since the area to be painted 112 and the figure zyzw have the same content, they are both indicated by the same reference numeral 112 in the following explanation. FIG. 3 shows this bitmap memory 11 in detail. 117 is a hatch pattern table in which various hatch patterns are expanded and stored;
18 is a work area in which the continuous hatch pattern 116 is processed. In the case of a printing device, the developable area 111
is selected to be smaller than the paper size area 110 as shown in FIG. l2 is a drawing processor, 13 is a printer controller,
l4 is the printer, l5 is the main processor, l6 is the memory,
17 is a DMA controller, 18 is an interface circuit, and l9 is a system bus. The drawing processor 12 performs a process of developing a figure to be printed on the printer 14 onto a bitmap memory 1 and a process of planning a surface painting target area 112. The printer controller 13 has a bitmap memory II.
A process is performed to read out the expanded figure or the figure drawn in full color and print it on the printer 14. In addition to storing the control program for the main processor 15, the memory 16 is provided with various buffers and memory areas (none of which are shown) for storing data and commands used during figure expansion and surface painting drawing processing. There is. The DMA controller 17 controls direct data transfer between the bitmap memory 11 and the sled 16 by block transfer, direct data transfer between the bitmap memory 11 and each memory area inside the memory 16, and the like. Reference numeral 18 denotes an interface circuit, which controls the interface between a host device (not shown) and the printing device. The main processor 15 controls the operation of each section in the printing apparatus, as well as the overall surface painting drawing process and printing operation. The system bus 19 includes a drawing processor 12, a printer controller 13, a main processor 15, a memory 16, and a DM.
A controller 17 and interface circuit 18 are connected to each other to transfer data between them. (B) Operation of the Embodiment The operation of the embodiment of the present invention will be explained according to the processing steps with reference to the flowchart of the surface painting drawing process shown in FIG. ■ Step S0 Step S. In this case, initialization processing for the printing device is performed by a higher-level device (not shown). In this initialization process, data for various hatch patterns is sent to the printing device.
``The main processor 15 of the printing device receives various hatch pattern data via the interface circuit 18, stores it in the memory 16, and then instructs the drawing processor 12 to develop it on the bitmap memory 11. The drawing processor 12 reads the hatch pattern data from the memory l6 by co-operating with the DMA controller 17, expands and stores it in the hatch pattern table 117 of the bitmap memory 1l, as shown in FIG. 114? exemplifies various hatch patterns stored in the hatch pattern table 117. ■ Step S1 When the initialization process is completed, the host device sends attribute information (solid color) necessary for surface painting drawing processing, surface painting processing contents such as hatch pattern, hatch pattern type number, etc. to the printing device. The main processor 15 of the printing device stores this attribute information in an attribute information table (not shown) in the memory 16.■ Step S8 The host device stores the figure to be printed (xyzw in FIG.
The data of the figure 112 shown in ) is sent to the printing device.
The figure data is given as vector data indicating the figure 112. The main processor l5 of the printing device receives the vector data of this graphic 112 via the interface circuit 18,
From this, a list of coordinates of the polygonal vertices (xyzw) of the figure 112 is compiled and stored in the memory l6, and then the drawing processor l2 is instructed to develop it on the bitmap memory 11. The li image processor 12 includes a DMA controller l7
The graphic data is read from the memory l6 by a co-operation operation with the bitmap memory 11, and is expanded into a graphic 112 as shown in FIG. 1(A) on the expandable area 111 of the bitmap memory 11. (2) Step S: The higher-level device instructs the printing device that is to perform the surface painting drawing process the area to be painted (figure 112) and the type number of the hatch pattern 114 to be painted.

(2) Step S4 The main processor 15 of the printing device reads from the memory 16 a list of coordinates of each vertex of the area to be painted, that is, the figure 112 instructed by the host device. Next, based on this list of coordinates of each vertex, the address on the bitmap memory 11 of each vertex (ABCD) of the figure 112 (minimum rectangular area 113 including figure xyzw) is set and stored in the memory 16. It also decodes the type number of the hatch pattern sent from the host device and searches for the designated hatch pattern from the attribute information table (not shown) in the memory l6. (2) Step S: The main processor 15 calculates a temporary development origin SPi of the hatch pattern based on the development origin (aO) in the development possible area 111 on the bitmap memory 11.

(2) Step S6 The main processor 15 determines whether the coordinates of the temporary expansion origin SPi of the hatch pattern 114 and the upper left point (point A) of the minimum rectangular area 113 are the same.

■ Step S, Step S. If the coordinates of the temporary development origin SPi of the hatch pattern 114 and the upper left point (point A) of the minimum rectangular area 113 are not the same, the main processor 15 specifies the type of the hatch pattern 114 to the drawing processor 12 (b patch pattern 1l4 , −) to generate the continuous hatch pattern. The drawing processor 12 reads out the specified hatch pattern 114y from the hatch pattern table 117 in the bitmap memory 11 through a cooperating operation with the DMA controller 17, and draws the same hatch pattern 1147 horizontally on the work area 118 of the bitmap memory l1. By arranging the two, a continuous hatch pattern 115 is generated.

■ Step S: The main processor 15 selects a new cutting position of the hatch pattern from the upper left position (point A coordinates) of the minimum rectangular area 113.
That is, a temporary expansion origin SPn of the new hatch pattern 116 is set.

[Phase] Step S9 The main processor l5 sets a new hatch pattern 116 having the same size as the hatch pattern l14, starting from the temporary expansion origin SPn, and instructs the drawing processor l2. Upon receiving this instruction, the drawing processor 12 thereafter uses this new hatch pattern 116 as a hatch pattern for surface painting drawing. ■ Step SL.

The main processor 15 processes a figure 112 which is an area to be painted.
The area other than that is protected and the drawing processor 12 is instructed to draw the figure 112 in full color using the new hatch pattern 116.

The drawing processor l2 reads out the new hatch pattern 116 from the work area 11B in the bitmap memory 1l by co-operating with the DMA controller 17, and uses the temporary expansion origin SPn as the hatch pattern expansion origin only within the minimum rectangular area 1l3. Performs surface painting drawing processing on. Filling drawing is performed using the minimum rectangular area 11 as shown in the figure.
3 from the top left to the bottom right.

Since the figures other than the figure 112 (figure xyzw) are protected, only the figure 112 shown in FIG. 6(A) is subjected to surface painting.

In step S6 of @①, the hatch pattern 114
The tentative expansion origin SPi and the upper left point of the minimum rectangular area 113 (
If the coordinates of point A) are the same, there is no need to process the continuous hatch pattern 115 or new hatch pattern 116, and step S. Shift to the minimum rectangular area ￥i
113, that is, surface painting is performed on the figure 112.

(2) When the surface painting drawing process for the figure 112 is completed as described above, the main processor 15 instructs the printer controller 13 to print. Upon receiving this instruction, the printer controller 3 transfers the bitmap memory I
The data of the graphic 112 developed on the developable area 111 of f and drawn in full color is read out and supplied to the printer 14 for printing.

Although the embodiment has been described above in which only one figure is subjected to surface painting, the same method can be applied to the case where two or more figures are subjected to surface painting. As already mentioned, the position of the temporary development origin SPn of the new hatch pattern 116 may be selected to be such that the development origin A of the hatch pattern of the minimum rectangular area ABCD is included inside the new hatch pattern 116. It is. It goes without saying that the present invention can also be applied to figure filling/drawing processing in normal image processing other than printing devices.

〔Effect of the invention〕

As explained above, according to the present invention, the following effects can be obtained.

(1) Minimum rectangle 6 that includes the area to be covered (figure) 112
Since only one area 113 is painted with area painting, there is no need to perform area painting skin drawing processing on areas other than this minimum rectangular area 113, and even if the cutting process of the new hatch pattern 116 is taken into account, the entire area is The speed of coloring and drawing processing can be improved. (2) Since the area painting process is performed only within the minimum rectangular area 113, the area to be protected may be an area other than the figure 112 and within the minimum rectangular area 1l3. Figure 11 which is an area
When 2 is small, the area to be protected is greatly reduced, and the processing speed for surface painting drawing can be improved.

[Brief explanation of drawings]

Fig. 1 is a diagram of the principle of the present invention; Fig. 2 is an explanatory diagram of a printing device used to implement an embodiment of the present invention; Fig. 3 is an explanatory diagram of new hatch pattern generation or processing in the same embodiment; Figure 4 is a flowchart of the area painting drawing process of the same embodiment, and Figure 5 is an explanatory diagram of the conventional area painting drawing method. 1 and 2, 11...Bitmap memory, 111...Developable area, 112... Area to be covered (figure), 113...
...Minimum rectangular area, 114...Hatch pattern, II
5... Continuous hatch pattern, 116... New hatch pattern, l2... Composition processor, 13-... Printer controller, 14... Printer, 15... Main processor, 16... Memory, 17--DMA controller, 1st--interface circuit, 19--system bus. Figure 4 Flowchart of surface painting drawing process of the embodiment. Moving on to printer operation.

Claims (2)

[Claims] (1) In the area painting method using a hatch pattern, which protects the area other than the area to be painted on the bitmap memory and draws the area to be painted using a specified hatch pattern, (a) Area painting (b) generating a new hatch pattern of the same size as the designated hatch pattern based on the coordinate values of the area to be painted; (c) drawing only a partial area on a bitmap memory that includes the area to be covered with the area using the new hatch pattern. method. (2) The surface painting drawing method using a hatch pattern according to claim 1, wherein the partial area is a minimum rectangular area that includes the area to be painted.