JP2001134743A - Display controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display controller for controlling an indication so as to exactly and surely identify a part overlapping plural areas on a screen. SOLUTION: A map information display controller 1 displays a first area specified by first map information stored in a first map information storage part 12 and a second area specified by second map information stored in a second map information storage part 13 on the screen of a display device 3 while partially overlapping these areas. In a plotting processing part 16, any one of pixels composing of a picture corresponding to only one of the first area and the second area is colored in respectively different first and second colors and plotting processing is controlled so as to color plural pixels corresponding to the part overlapping these areas so as to alternately constitute straight lines in the first and second colors.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display control device for controlling a plurality of areas to be displayed on a screen based on a plurality of pieces of area information for specifying the position of an area on a plane. The present invention relates to a display control device that controls a plurality of areas based on a plurality of pieces of map information to be displayed on a screen while partially overlapping each other.

[0002]

2. Description of the Related Art In recent years, with the advancement of surveying technology, buildings,
A variety of highly accurate map information indicating the position of a road or the like is created. Various types of map information, which will be a huge amount of data, are to be input and managed by computers with high speed and high performance, and especially in the fields of firefighting, police, etc. 2. Description of the Related Art A map information display system for displaying a map that is easily recognizable from information is used.

More specifically, in such a map information display system, a plurality of pieces of map information, each of which indicates the position of only roads, buildings, administrative divisions, disaster prevention facilities, disaster information, and the like by drawing data, are respectively provided. The map layers are stored and managed in a predetermined storage unit, and each map layer is selectively superimposed and displayed as needed by the user, and activities such as firefighting and police based on these displays are performed. I have.
Usually, in the display of such map information, since each map itself is composed of a diagram, even if the maps are superimposed,
All of the line information is not superimposed, and the user can confirm a plurality of pieces of map information on one screen without any obstacle.

[0004]

However, in the conventional map information display system, for example, a submerged area and a fire area which are managed as different map layers indicating disaster information are filled in (two-dimensional) areas on the screen. , It is not possible for the user to identify these two areas without difficulty. This is because when the regions of the respective map layers are displayed in an overlapping manner, the region drawn first is overwritten by the region drawn later and disappears.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and a display control device for controlling display so that a portion where a plurality of areas overlap with each other is accurately and reliably identified on a screen. The purpose is to provide.

[0006]

In order to achieve the above object, a display control device according to the present invention stores area information for specifying a position of an area on a plane, stored in a predetermined storage unit. (N is an integer of 2 or more).
A display control device that controls the display of the Nth to Nth areas on a screen, wherein pixels corresponding to only one of the first to Nth areas among pixels forming the screen are respectively The pixels corresponding to overlapping portions where M (M is an integer of 2 or more and N or less) N regions among the first to Nth regions are colored in different colors, and the pixels corresponding to the respective regions are set to colors corresponding to the respective regions. In this case, the color is controlled to be uniform at a density of 1 / M pixels.

Further, a display control device according to the present invention is a display control device for controlling a first area and a second area specified on a plane to be partially overlapped and displayed on a screen. A pixel corresponding to only one of the first region and the second region among the pixels constituting the screen is colored with a first color and a second color that are different from each other. It is characterized in that a plurality of pixels corresponding to the portion where the second region is superimposed are controlled to be colored so that a straight line is formed alternately by the first color and the second color.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A map information display system according to one embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram for explaining the overall configuration of a map information display system according to one embodiment of the present invention.
FIG. 3 is a diagram showing an example of basic map information 101, first map information 102, and second map information 103 managed by the map information display control device 1 of FIG.

The present map information display system uses first map information indicating the position of an area such as a fire area, a fire extinguishing area, and a submerged area on a basic map displayed by the basic map information 101 indicating the position of a road, a building, and the like. Map information display control device 1 for controlling display of the second map information 102 and the second map information 103
A map information updating device 2 for updating the first map information 101 and the second map information 102 in real time; a basic map information 101, a first map information 102 and a second map information 1
The display device 3 includes a display device 3 for displaying the same on a single screen by superimposing 03 on one screen.

More specifically, the map information display control device 1 comprises a basic map information storage unit 11 for storing each of the basic map information 101, the first map information 102, and the second map information 103, and a first map information storage unit. 12 and a second map information storage unit 13, and drawing information for storing drawing information for specifying a drawing method of an overlapping portion of an area specified by the first map information 102 and an area specified by the second map information 103. A storage unit 14, a display position information input unit 15 for inputting display position information for designating a portion to be displayed in the map information, a basic map information, a first map information, and a second map information using display position information and drawing information. A drawing processing unit 16 that generates map data based on the map information and draws a map;
An image memory 17 for displaying a map on the display device 3 based on the map data generated and written by the drawing processing unit 16 is included.

[0011] The map information display control device 1 having such a configuration.
In this example, drawing information is used, and the following drawing is performed on an overlapping portion between the first map information and the second map information. The drawing information used here specifies the width of the first drawing information that specifies one of the drawing directions of vertical, horizontal, and diagonal, and the width of the first map information and the second map information that are alternately displayed in a straight line. And second drawing information for performing the drawing.

FIG. 3 is a diagram showing drawing on an overlapping area when a drawing width 1 is designated as the second drawing information. FIGS. 3A, 3B, and 3C show overlapping areas displayed when the drawing directions are designated as vertical, horizontal, and oblique as the first drawing information, respectively. Similarly, FIG. 4 is a diagram showing drawing on the overlapping area when the drawing width 2 is designated as the second drawing information.
(A), (b), and (c) show overlapping areas displayed when the drawing direction is specified as vertical, horizontal, or oblique as the first drawing information, respectively.

As shown in FIGS. 3 and 4, in the map information display control device 1, a drawing direction and a drawing width are designated by first drawing information and second drawing information, respectively. By performing the drawing process, a straight line displayed in a color corresponding to the first map information and a straight line displayed in a color corresponding to the second map information are displayed in a region where the first map information and the second map information overlap. The straight lines are alternately spread without gaps.

In particular, here, it is assumed that the drawing method is specified in any of the three directions of vertical, horizontal, and oblique. However, the first drawing information is specified by a two-dimensional vector. By performing drawing, a pseudo straight line can be drawn by setting the drawing direction to an arbitrary direction. The drawing processing in the drawing processing unit 16 of the map information display control device 1 as described above will be described with reference to FIGS.

FIG. 5 is a flow chart for explaining the procedure of the drawing processing in the drawing processing unit 16, and FIG. 6 is a flow chart for explaining the procedure of the data creation processing for the overlapping area in S6 of FIG. is there. 7 to 10 are diagrams for explaining the data creation processing for the overlapping area in FIG. As shown in FIG.
In the drawing process in 6, first, display position information for designating an area to be displayed on the screen of the display device 3 is input by the display position information input unit 15 (S1). (For example, this display position information can be coordinate information for specifying two diagonal vertices for specifying a rectangular area on the map information.) Then, prior to drawing the map, the drawing information is set in advance. The drawing information stored in the storage unit 14 is read (S
2) The basic map information, the first map information, and the second map information are read (S3, S4). The map data based on the basic map information read in S3 is written in the image memory 17 as it is, and the first map information and the second map information read in S4 are read in more detail in FIG. Data creation processing is performed on the overlapping region (shown)
6) Then, data based on the map data generated by the above is written into the image memory 17 (S7), and the present processing ends.

In the data creation process of S6, as shown in FIG. 6, first, pixels e ₁ to e _N (N is the number of pixels included in the overlap area) included in the overlap area are specified (FIG. 6). S61). FIG. 7 shows pixels e _{1 to} e _N (N = 11) included in the overlapping area between the first map area and the second map area.
It is a figure which shows 9). Here, the number N of pixels included in the overlap region is 119, the pixels on the screen are specified by the two-dimensional coordinates (x, y), and the pixels included in the overlap region on the screen are from the uppermost left end to the right end. E ₁ (x ₁ , y ₁ ), e ₂ (x ₂ , y ₂ ), e
₃ (x ₃ , y ₃ ),..., E ₁₁₉ (x ₁₁₉ , y ₁₁₉ ).

Subsequently, pixels e ₁ to e ₁ included in the overlapping area
Among the pixels e _N , x _L and x _{M in} which the x coordinate takes the minimum value and the maximum value, and y _L and y _{M in} which the y coordinate takes the minimum value and the maximum value are specified. (S62). In FIG. 7, x _L = x ₃₀ (= x ₄₃ = x ₅₆ = x ₆₈ ), x _M = x ₄₂
(= X ₅₅ ), y _L = y ₁ (= y ₂ = y ₃ ), y _M = y ₁₁₆ (=
y ₁₁₇ = y ₁₁₈ = y ₁₁₉ ), which are used for drawing a straight line in the overlapping area.

Subsequently, in the data creation process (see FIG. 6), a pixel to be drawn (colored) is selected according to the color for displaying the first map information (S63), and the color for displaying the first map information in the overlapping area is selected. Depending on the pixels that are not drawn,
The map information is drawn in a color to be displayed (S64).
FIG. 8 to FIG. 10 are diagrams for explaining the data creation processing for the overlapping area in which straight lines in the vertical, horizontal, and oblique directions are displayed, respectively.

When drawing a straight line in the vertical direction in the overlapping area,
In this case, as shown in FIG. _L, X_L+1, x_L+
2, x_L+6, x_L+7, x_L+8, x_LThe pixel above +12
It is colored by the color that displays the first map information.
Outer x = x_L+3, x_L+4, x_L+5, x_L+9, x_L+
10, x_LThe color where the pixel on +11 displays the second map information
Color, and similarly in the overlapping area
When drawing a straight line horizontally, as shown in FIG.
And y = y_L, Y_L+1, y_L+2, y_L+6, y_L+7,
y_L+8, y_LThe pixel on +12 displays the first map information
Color is developed by color, and y = y other than these_L+3, y_L+
4, y_L+5, y_L+9, y_L+ 10, y_LPixel on +11
Is colored by the color for displaying the second map information.
Become.

In addition, a straight line is drawn obliquely in the overlapping area.
In the case of drawing, y = y as shown in FIG._LPicture above
If the value of x is x₁, X₁+1, x₁+2,
y = y _LThe value of x among the pixels on +1 is x₁-1, x₁, X₁
+1, y = y_LThe value of x among the pixels on +2 is
x₁-2, x₁-1, x₁, X₁+4, x₁+5
Of y = y_LThe value of x among the pixels on +3 is x₁-3, x₁
-2, x₁-1, x₁+3, x₁+4, x₁+5
, Y = y_LThe value of x among the pixels on +12 is
x₁, X₁+1, x₁+2 indicates the first map information
The color is displayed according to the color to be displayed.
It is colored by the color that displays the map information.

More generally, in the overlapping area, the vertical
When drawing a line, k is a natural number (corresponding to the line width).
A) is an integer of 0 or more and less than k (a straight line in the overlapping area)
), N is an integer of 0 or more.
As a number (corresponding to the value obtained by subtracting 1 from the number of straight lines),
x = ｛(x_L+ A), (x_L+ A + 1),..., (X_L
+ A + k-1)｝, ｛(x_L+ A + 2k), (x_L+ A +
2k + 1),..., (X _L+ A + 3k-1)｝,
・, ｛(X_L+ A + 2nk), (x_L+ A + 2nk +
1), ..., (x_L+ A + (2n + 1) k-1)｝ top
Of the pixel of the color corresponding to the color for displaying the first map information
And the other pixels are displayed in the second map information.
Color can be developed by color, overlapping area
When drawing a straight line in the horizontal direction in the area, k is a natural number (straight line)
A) is an integer of 0 or more and less than k (overlap area
(Corresponding to the position deviation from the upper end of the straight line in the region), n
Is an integer greater than or equal to 0 (corresponding to the value obtained by subtracting 1 from the number of straight lines.
Y = ｛(y_L+ A), (y_L+ A + 1),
.., (y_L+ A + k-1)｝, ｛(y_L+ A + 2k),
(Y_L+ A + 2k + 1),..., (Y_L+ A + 3k-
1)｝, ..., ｛(y_L+ A + 2nk), (y_L+ A +
2nk + 1),..., (Y_L+ A + (2n + 1) k-
1) The pixels above｝ are generated by the color for displaying the first map information.
The pixels other than these are used for the second map information.
Can be colored according to the color to be displayed
You.

When a straight line is drawn obliquely (from the upper right to the lower left) in the overlapping area, k is a natural number (corresponding to the width of the straight line in the x direction), b is an integer of 0 or more, and n is As integers (positive and negative and 0), among the pixels on y = y _L + b, the value of the x coordinate is ｛(x ₁ −b), (x ₁ −b +
1),..., (X ₁ −b + k−1)}, ｛(x ₁ −b +
2k), (x ₁ -b + 2k + 1),..., (X ₁ -b +
3k-1)}, ···, {(x 1 -b + 2nk), (x 1
−b + 2nk + 1),..., (X ₁ −b + (2n +
1) k-1)} is to be colored by the color for displaying the first map information, and the other pixels are assigned to the second map information.
The map information may be colored according to the displayed color. (Of the pixels on y = y _L + b, the value of the x coordinate is ｛(x ₁ + b), (x ₁ + b + 1),..., (X ₁
+ B + k-1)} , {(x 1 + b + 2k), (x 1 + b +
2k + 1), ···, ( x 1 + b + 3k-1)}, ··
・, ｛(X ₁ + b + 2nk), (x ₁ + b + 2nk +
1),..., (X ₁ + b + (2n + 1) k−1)} are colored by the color for displaying the first map information, and the other pixels are colors for displaying the second map information. In this case, a straight line in an oblique direction from the upper left to the lower right is drawn. As described above, by the drawing processing in the drawing processing unit 16, the first
By creating data for the overlapping area from the map information and the second map information and storing the data based on these in the image memory 17, the following display is performed. FIGS. 11 and 12 are diagrams showing a region 201 based on the first map information and a region 301 based on the second map information, respectively, which are targets of the drawing process in the drawing processing unit 16. FIG. FIG. 4 is a diagram showing an overlapping area 401 with an area 301.

If it is specified by the drawing information stored in the drawing information storage section 14 (see FIG. 1) that straight lines having a width of 1 are alternately drawn in the horizontal direction, the first map information storage section 12 stores the drawing information. Area 201 according to the first map information
An overlapping portion 401 as shown in FIG. 13 is drawn on the screen of the display device 3 so as to be superimposed on the basic map information, and an area 301 based on the second map information stored in the second map information recording unit 13. The Rukoto. The overlapping portion 401 drawn in this manner is, for example, a pixel for displaying the region 201 and the corresponding straight line in the overlapping region 401, and a pixel for displaying the region 301 and the corresponding straight line in the overlapping region 401. By making blue correspond to
The overlap between the area 201 and the area 301 is accurately and reliably identified.

In the above-described embodiment, 2
Although a three-dimensional figure (area) is displayed, the present invention can be similarly applied to map information for displaying a three-dimensional figure. Further, in the above-described embodiment, two regions are superimposed by two types of map information. However, three or more regions can be superimposed by three or more types of map information. At this time, regions corresponding to the three types of map information are referred to as region 1, region 2 and region 3, and a straight line (or pseudo line) 1 by region 1 and a region The straight line 3 by the straight line 2 and the region 3 is repeatedly drawn, and the same drawing processing as that of the above-described drawing processing unit 16 can be performed in a portion where any two regions overlap.

Further, in the map information display system according to the modified example of the above-described embodiment, when two or more types of regions based on map information are overlapped, the overlapping regions are formed with colors corresponding to the respective regions at a uniform pixel density. For example, when the four types of map information are superimposed, the following display can be performed. FIG.
FIG. 4 is a diagram showing an overlapping portion of map information to be displayed by the map information display system of the present modification. Here, the first map information to the fourth map information are fire area information indicating an area where a fire such as a building has occurred, submerged area information indicating an area where a building or the like is submerged, and a building or the like is collapsed, respectively. The first map information to the fourth map information have red, blue, white, and green, respectively. It shall be displayed in.

In the map information display system of this modification, 4
In the portion where the types of map information overlap, pixels having an odd x coordinate and an odd y coordinate are colored in red indicating the first map information, and an even x and y coordinate are indicated in blue indicating the second map information. Are colored, pixels that have odd x coordinates and even y coordinates are colored in white indicating third map information, and x and y coordinates are green in green that represents fourth map information. It is assumed that the drawing information is configured so that pixels having even numbers are colored. Even with such a display, it can be accurately and reliably identified that a plurality of areas overlap.

[0027]

According to the first display control device of the present invention, N (N is an integer of 2 or more) pieces of area information stored in a predetermined storage unit and specifying the position of an area on a plane are stored. Based on the read and read N pieces of area information, control is performed so that the first to Nth areas are displayed on the screen while partially overlapping. In the present display control device, pixels corresponding to only one of the first to N-th regions among the pixels constituting the screen are colored in different colors from each other,
M (M is an integer of 2 or more and N or less) in the first to Nth areas
Control is performed so that pixels corresponding to overlapping portions where the sheet regions are superimposed are uniformly colored with a color corresponding to each region at a density of 1 / M pixels.

As a result, the previously drawn area does not disappear or become unclear at the overlapping part of the plurality of areas as in the prior art. The user can accurately and reliably identify whether or not are overlapped.
A second display control device according to the present invention controls the first region and the second region specified on a plane to be displayed with a part of the screen superimposed on the screen. In the present display control device, pixels corresponding to only one of the first region and the second region among the pixels constituting the screen are colored with different first colors and second colors, respectively. A plurality of pixels corresponding to a portion where the first region and the second region are superimposed are controlled to be colored so that a straight line is alternately formed by the first color and the second color.

Thus, the user can accurately and surely identify what area is overlapped at a portion where a plurality of areas overlap. The third display control device according to the present invention reads first area information and second area information stored in a predetermined storage unit and specifying a position of an area on a plane, and reads the read first area information.
Is controlled so that the first area and the second area are displayed on the screen while partially overlapping each other based on the area information and the second area information. In the present display control device, control is performed such that, of the pixels constituting the screen, those corresponding to only one of the first region and the second region are colored in different first and second colors, respectively. And the pixel is 2
It is specified by the dimensional coordinates (x, y), k is a natural number, a is an integer from 0 to less than k, n is an integer from 0 to 0, and the first area and the second area are superimposed. among the pixels values of the x coordinate of the pixels corresponding to the overlapping portion is a value of x-coordinate of the pixel having the minimum and x _L, corresponding to the overlapping portion, the value of the x coordinate _{{(x L + a),} (x _L +
a + 1),..., (x _L + a + k-1)}, ｛(x _L +
a + 2k), (x _L + a + 2k + 1),..., (x _L +
a + 3k-1)｝,..., ((x _L + a + 2nk),
(X _L + a + 2nk + 1),..., (X _L + a + (2n
+1) k−1)} is colored in the first color,
Control is performed so that pixels other than the pixel that is colored with the first color are colored with the second color.

As a result, the portion where the two regions overlap is drawn in a stripe pattern with a vertical straight line, and the user can accurately and reliably identify these regions. In the third display control device, a pixel having a minimum y-coordinate value among pixels corresponding to the overlapping portion has a y-coordinate value of y _L, and a pixel corresponding to the overlapping portion has a y-coordinate value. Is ｛(y _L + a), (y _L + a + 1),.
_{··, (y L + a +} k-1)}, {(y L + a + 2k),
_{(Y L + a + 2k +} 1), ···, (y L + a + 3k-
1)｝,..., ｛(Y _L + a + 2nk), (y _L + a +
2nk + 1),..., (Y _L + a + (2n + 1) k−
1) It is possible to control so that the color｝ is colored in the first color and pixels other than the pixel colored in the first color are colored in the second color.

As a result, a portion where the two regions overlap is drawn in a stripe pattern with a horizontal straight line, and the user can accurately and reliably identify these regions. In the third display control device, a pixel is specified by two-dimensional coordinates (x, y), k is a natural number, b is an integer of 0 or more, n is an integer, and the overlapping portion the value of y-coordinate of the pixel value of y-coordinate is the smallest among the pixels corresponding y _L, the value of x-coordinate of a pixel as a reference among the pixel values of the y-coordinate is y _L and x ₁ in , Among the pixels corresponding to the overlapping portion, the value of the y coordinate is y _L +
b, the value of the x coordinate is ｛(x ₁ −b),
(X ₁ −b + 1),..., (X ₁ −b + k−1)},
｛(X ₁ −b + 2k), (x ₁ −b + 2k + 1),.
・, (X ₁ −b + 3k−1)},..., {(X ₁ −b +
2nk), (x ₁ −b + 2nk + 1),..., (X ₁ −
b + (2n + 1) k-1)} are controlled to be colored in the first color, and pixels other than the pixels colored in the first color are controlled to be colored in the second color. can do.

As a result, a portion where the two regions overlap is drawn in a stripe pattern in a diagonal straight line, and the user can accurately and reliably identify these regions.

[Brief description of the drawings]

FIG. 1 is a diagram for explaining an overall configuration of a map information display system according to one embodiment of the present invention.

FIG. 2 is a diagram showing an example of basic map information 101, first map information 102, and second map information 103 managed by the map information display control device 1 of FIG.

FIG. 3 is a diagram illustrating drawing on an overlapping area when a drawing width of 1 is designated as second drawing information.

FIG. 4 is a diagram illustrating drawing on an overlapping area when a drawing width 2 is designated as second drawing information.

FIG. 5 is a flowchart for explaining a procedure of a drawing process in a drawing processing unit 16;

6 is a flowchart for explaining a procedure of a data creation process for an overlapping area in S6 of FIG. 5;

FIG. 7 is a diagram showing pixels e _{1 to} e _N (N = 119) included in an overlapping area between a first map area and a second map area.

FIG. 8 is a diagram for explaining a data creation process for an overlapping area in which a vertical straight line is displayed.

FIG. 9 is a diagram for explaining a data creation process for an overlapping region in which a horizontal straight line is displayed.

FIG. 10 is a diagram for explaining a data creation process for an overlapping area in which a straight line in an oblique direction is displayed.

FIG. 11 is a diagram illustrating an area 201 based on first map information to be subjected to a drawing process in a drawing processing unit 16;

FIG. 12 is a diagram illustrating an area 301 based on second map information to be subjected to a drawing process in a drawing processing unit 16;

FIG. 13 is a diagram showing an overlapping area between an area 201 and an area 301.

FIG. 14 is a diagram showing an overlapping portion of map information to be displayed by the map information display system of the modified example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Map information display control device 2 Map information update device 3 Display device 11 Basic map information storage unit 12 First map information storage unit 13 Second map information storage unit 14 Drawing information storage unit 15 Display position information input unit 16 Drawing processing unit 17 Image memory 101 Basic map information 102 First map information 103 Second map information 201 Area based on first map information 301 Area based on second map information 401 Overlap area between area 201 and area 301

Claims (7)

[Claims] 1. N (N is an integer of 2 or more) area information which is stored in a predetermined storage unit and specifies a position of an area on a plane is read, and the read area information for N sheets is read. A display control device that controls to display the first to N-th areas on a screen while partially overlapping each other based on one of the first to N-th areas among pixels constituting the screen. Those corresponding only to the regions are colored with different colors from each other, and M (M is an integer of 2 or more and N or less) in the first to Nth regions
A display control device for controlling pixels corresponding to overlapping portions where a plurality of regions are superimposed to be uniformly colored with a color corresponding to each region at a density of 1 / M pixels. 2. A display control apparatus for controlling a first area and a second area specified on a plane to be partially overlapped and displayed on a screen, comprising: The one corresponding to only one of the first area and the second area is colored with a first color and a second color that are different from each other, and the first area and the second area are superimposed. A display control device that controls a plurality of pixels corresponding to a portion to be colored so that a straight line is formed alternately by a first color and a second color. 3. A first area information and a second area information which are stored in a predetermined storage unit and specify a position of an area on a plane are read, and the read first area information and the second area information are read. What is claimed is: 1. A display control device for controlling a first area and a second area to be displayed on a screen while partially overlapping each other based on area information, wherein the first area and the second area are included in pixels constituting the screen. A color corresponding to only one of the regions is colored with a first color and a second color which are different from each other. Pixels are specified by two-dimensional coordinates (x, y), k is a natural number, a is an integer of 0 or more and less than k, n is an integer of 0 or more, and a pixel corresponding to an overlapping portion where the first area and the second area are overlapped has a minimum value of the x coordinate. the value of x-coordinate and x _L, the overlapping portion Among the pixels respond, the value of x coordinate {(x
_{L + a), (x L} + a + 1), ···, (x L + a + k-
1)｝, ｛(x _L + a + 2k), (x _L + a + 2k +
1),..., (X _L + a + 3k−1)｝,.
｛(X _L + a + 2nk + 1), (x _L + a + 2nk + 1),.
.., (X _L + a + (2n + 1) k−1)} are colored in the first color, and pixels other than the pixels colored in the first color are colored in the second color. A display control device characterized by performing control as described above. 4. A pixel corresponding to the overlapping portion, wherein
The value of the y coordinate of the pixel having the minimum coordinate value is defined as y _L, and among the pixels corresponding to the overlapping portion, the y coordinate value is ｛(y _L + a), (y _L + a + 1),. (Y _L + a
+ K-1)}, {(y _L + a + 2k), (y _L + a + 2k)
+1),..., (Y _L + a + 3k−1)｝,.
｛(Y _L + a + 2nk + 1), (y _L + a + 2nk + 1),.
.., (Y _L + a + (2n + 1) k−1)} are colored in the first color, and pixels other than the pixels colored in the first color are colored in the second color. 3. The display control device according to claim 2, wherein the display control device performs the control as follows. 5. A pixel is specified by two-dimensional coordinates (x, y), k is a natural number, b is an integer of 0 or more, n
Pixels is an integer, and the value of y-coordinate of the pixel value of the y coordinate of the pixels corresponding to the overlapping portion is minimum y _L, the value of the y coordinate is referenced in the pixel is y _L The value of the x coordinate of x is x _1, and the value of the y coordinate of the pixel corresponding to the overlapping portion is y
Among those that are _L + b, the value of the x coordinate is ｛(x ₁ −b),
(X ₁ −b + 1),..., (X ₁ −b + k−1)},
｛(X ₁ −b + 2k), (x ₁ −b + 2k + 1),.
・, (X ₁ −b + 3k−1)},..., {(X ₁ −b +
2nk), (x ₁ −b + 2nk + 1),..., (X ₁ −
b + (2n + 1) k-1)} is controlled to be colored in the first color, and pixels other than the pixels colored in the first color are controlled to be colored in the second color. 3. The display control device according to 1. 6. A computer-readable storage medium storing a program for controlling a first area and a second area specified on a plane to be partially overlapped and displayed on a screen. Wherein pixels corresponding to only one of the first region and the second region among the pixels constituting the screen are colored with different first and second colors, respectively, Controlling a plurality of pixels corresponding to a portion where the region and the second region are superimposed so as to form a straight line alternately with the first color and the second color; A computer-readable recording medium on which a program is recorded. 7. A display control method for controlling a first area and a second area specified on a plane to be partially overlapped and displayed on a screen, the method comprising: Controlling the one corresponding to only one of the first area and the second area to be colored with a first color and a second color that are different from each other; and the first area and the second area. Controlling the plurality of pixels corresponding to the portion where the regions are overlapped so as to form a straight line alternately with the first color and the second color.