JPH07200866A - Image display position deciding method and device therefor - Google Patents

Abstract

PURPOSE:To provide an image display position deciding method and device therefor which can use an image deforming function up to its limit without displaying the image data at an unexpected position when the image data are moved or deformed. CONSTITUTION:A display range is set for the component parts based on the upper left coordinates (8x, 8y) and the lower right coordinates (9x, 9y) of a display range. When a component parts is deformed, the points A', B', C' end D' of the deformed parts are moved to each optional position. At the same time, a rectangle D is decided to include all point A'-D', and the minimum X coordinate 12, the maximum X coordinates 14, the minimum Y coordinates 16 and the maximum Y coordinates 18 are calculated to show the positions of those four points on the display screen of the rectangle D. Then, the coordinates (8x, 8y) and (9x, 9y) are compared with the coordinates 12, 14, 16 and 18, respectively, to decide the display position of the component parts so that the deformed component parts is included in the display range of a rectangle C.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to image transformation, and more specifically, it is composed of dots such as a character used in animations and games, background data and the like, and a display color number or palette number for each dot. And method for determining the display position by detecting the size of the image data and the position of the image data when the position of the image data is changed when the image data of the so-called bit array format is modified. The present invention relates to a device that realizes.

[0002]

2. Description of the Related Art Conventionally, image data in a bit array format is often used in animation, games, etc., and characters and background data are displayed by this image data. When giving movement to the character or background or changing its shape in these animations, games, etc.,
The image data is transformed for each constituent part (for example, the eyes, mouth, etc.) of the character or a part of the background.

[0003]

By the way, in the conventional image transformation method, when the character or the background is moved or transformed, the position of the image data after the movement or after the transformation is not detected. The position of image data may change due to movement or deformation. Therefore, when the component parts are deformed, there is a problem that they are displayed at unexpected positions. In addition, if the range of deformation of the component parts is limited so as not to be displayed at an unexpected position, the range of deformation is limited, and it is difficult to use the deformation function to the limit.

Therefore, according to the present invention, when the image data is moved or deformed, the function of the deformation is utilized to the maximum without the constituent parts being displayed at an unexpected position or being restricted by the display position. An object of the present invention is to provide an image display position determining method and an apparatus thereof.

[0005]

In order to achieve the above object, the image display position determining method according to the invention of claim 1 sets a displayable area capable of displaying image data to be transformed, and sets the displayable area of the image data. Each time the deformation is performed, a determination area representing the size of the image data after the deformation is created, and the display position of the image data is determined so that the determination area falls within the displayable area. . An image display position determining method according to the invention of claim 2 sets a displayable area capable of displaying image data to be moved, and sets the size of the image data after the movement each time the image data is moved. Is determined, and the display position of the image data is determined so that the determination area falls within the displayable area. Moreover, as a preferable aspect,
For example, as described in claim 3, the displayable area may be a rectangle, and the determination area may be a minimum rectangle including all the image data after transformation. For example, as in claim 4, the displayable area may be a rectangle, and the determination area may be a rectangle smaller than a minimum rectangle that includes all the image data after transformation. For example, as in claim 5, the displayable area may be represented by XY coordinates of at least two points on a diagonal.

For example, as described in claim 6, the determination area may be represented by XY coordinates of four diagonal points. For example, as described in claim 7, the image data may be each of a plurality of constituent parts forming an image. For example, as described in claim 8, the deforming means comprises:
A transformation target having image data in a bit array format is divided into a plurality of small polygons, and based on data obtained by transforming each of these small polygons into different small polygons according to a predetermined transformation process,
It is also possible to use a polygon division transformation method for transforming each of the divided small polygons into different small polygons. Claim 9
An image display position determining device according to the invention described above, a displayable area setting means for setting a displayable area capable of displaying image data to be deformed, a deforming means for deforming the image data according to a predetermined deformation process, Determination area creating means for creating a determination area representing the size of the image data after deformation, each time the image data is deformed by the deforming means, and the determination area for each time the image data is deformed by the deforming means. Image position determining means for determining the display position of the image data so that the determination area created by the area creating means falls within the displayable area.

In a preferred aspect, for example, the shape of the image data is left unchanged, and the coordinates of the image data are moved according to a predetermined moving process to change the display position of the image data. The determination area creating means creates a determination area representing the size of the image data after the movement each time the image data is moved by the moving means, and the image position determining means sets the movement area. Each time the image data is moved by the means, the display position of the image data may be determined so that the determination area created by the determination area creating means falls within the displayable area. For example, as described in claim 11, image data in a bit array format,
Storage means for storing the number of pixels representing the size of the image data, coordinates representing the displayable area of the image data, and initial placement coordinates of the image data, and the number of pixels stored in the storage means, Calculating means for calculating display coordinates representing a display position of the image data according to the initial arrangement coordinates, and calculating determination area coordinates representing the determination area according to the display coordinates and the number of pixels; A storage unit for storing the display coordinates and the determination area coordinates may be provided.

For example, as described in claim 12, the image data is each of a plurality of constituent parts forming an image, and a constituent part selection for selecting a constituent part to be processed from the plurality of constituent parts. Means may be provided. For example, as described in claim 13, a movement instructing means for instructing a movement and a movement direction with respect to the constituent part selected by the constituent part selecting means may be provided. For example, as described in claim 14, deformation instruction means for instructing deformation of the constituent part selected by the constituent part selecting means may be provided. For example, as described in claim 15, the transforming means transforms a transform target having image data in a bit array format,
It is divided into a plurality of small polygons, and each divided small polygon is deformed into different small polygons based on data for deforming each of these small polygons into different small polygons according to a predetermined deformation process. May be. For example, as described in claim 16, a display unit may be further provided for displaying the image data after being transformed by the transforming unit.

[0009]

According to the present invention, first, a displayable area capable of displaying image data to be deformed is set, and each time the image data is deformed, a determination area indicating the size of the deformed image data is set. The display position of the image data after the modification is determined so that the determination area is within the displayable area.
Therefore, since the deformed image data is displayed in the displayable area, a problem such as the image data being displayed at an unexpected position does not occur. Moreover, since the display position of the image data is detected and corrected after the deformation without limiting the deformation range of the image data from the beginning, the function of the deformation can be utilized to the maximum.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. First, the principle of the present invention will be described. FIG. 1 is a diagram showing the principle of a display position detecting method for detecting the display position of a component when the component is deformed. FIG. 1 (a) shows the image data after the transformation, particularly the image data in the bit array format,
It has an image (picture) A of "eyes". A solid line B is a contour line of a face or the like, and the transformed image data is a broken line C.
Display is possible within the rectangular display range. First, the display range in which the constituent parts can be displayed is set by the display range upper left coordinates (Δ mark) 8 and the display range lower right coordinates (▲ mark) 9. It should be noted that the original image data of the constituent parts is rectangular as shown in FIG. 1B, and is assumed to be transformed into an arbitrary quadrangle by transformation for the sake of simplicity. Also, in FIG. 1B, the upper left apex A ′ (circle) of the constituent part is a point that represents the position of the constituent part when displayed on the display surface (display), and is called a reference point. To

As shown in FIG. 1 (c), when the constituent parts are deformed, points A ', B', C'and D'of the constituent parts respectively move to arbitrary positions. . At this time, a rectangle D that includes all four points is determined, and in order to represent the position of the rectangle D on the display surface, the minimum X coordinate 12, the maximum X coordinate 14, the minimum Y coordinate 16, and the maximum Y coordinate 18 are set. calculate. For example, when the deformation shown in the drawing is performed, the X coordinate of the point A'is the minimum X coordinate 12, the X coordinate of the point D'is the maximum X coordinate 14, and the Y coordinate of the point A'is the minimum Y coordinate 16. ,
Then, the Y coordinate of the point C ′ becomes the maximum Y coordinate 18.

Next, a display range upper left coordinate 8 (X coordinate 8x, Y coordinate 8y) and a display range lower right coordinate 9 (X coordinate 9x, Y coordinate 9y) shown in FIG. Maximum X coordinate 14, minimum Y coordinate 16, and maximum Y coordinate 18
And the display positions of the component parts are determined so that the component parts after the deformation do not protrude from the display range of the rectangle C described above. In this way, the display range of the component parts is set, and when the component parts are deformed, the minimum and maximum values of the X coordinate and Y coordinate of the image data after the deformation are calculated, and the component parts are If it is not within the displayable range C, the display positions of the constituent parts are changed so as to be within the range. Therefore, the constituent parts are not displayed at unexpected positions. Further, the deformation function can be used to the maximum without being restricted by the display position.

Next, a specific embodiment of the present invention based on the above principle will be described. Configuration of Image Positioning Device FIG. 2 is a block diagram showing the configuration of an embodiment of the image position determining device which realizes the image position determining method according to the present invention.
In FIG. 2, the image position determining device is roughly divided into C
PU 31, input operator 32, storage device 33, image signal generation circuit (Video Display Prosseser: hereinafter referred to as VDP)
34, VRAM 35 and TV display 36.

The CPU 31 controls the entire apparatus,
When the deformation switch (described later) of the input operator 32 is pressed, the storage device 33 is detected based on the control program stored in the internal memory so as to correspond to the command information.
The image data of the corresponding constituent part stored in C is read and deformed, the coordinates of the rectangle D including the image data after the deformation are calculated, and the rectangle D is displayed in the displayable range C.
It is determined whether or not it is within the displayable range C, and if it is not within the displayable range C, the display positions of the constituent parts are changed so as to be within the displayable range C, and then the image data is output to the VDP 34. Further, the CPU 31 is an internal register (storage means).
The internal register 31a stores the coordinates of each point of the constituent parts as shown in FIG. 4 described later and the selected part number indicating the number of the currently selected constituent part. Has become.

The input operator 32 is operated by an operator, and is a part selection switch 32a (component part selection means) for selecting a component part to be deformed, and a deformation switch for instructing deformation of the selected component part. 32b (deformation instructing means) and a movement switch 32c (movement instructing means) for instructing movement of the selected component part. Each of the switches 32a to 32c may be a push switch that can be operated independently, or a switch board including a plurality of switches, a keyboard, or the like. As the input operator 32, a mouse, a trackball, or the like may be used instead of the switch board or the like.

The storage device (storage means) 33 stores, for each constituent part, original image data and data concerning the constituent part. FIG. 3 is a diagram for explaining the data of each component stored in the storage device. As shown in FIG. 3, the storage device 33 stores image data, the number of pixels in the X direction indicating the number of pixels in the X direction of the image data, the number of pixels in the Y direction indicating the number of pixels in the Y direction, and the configuration for each component. Display range upper left X coordinate, display range upper left Y coordinate, display range lower right X coordinate, display range lower right Y coordinate, display of each component part in the initial state, which indicates the displayable range of the part (coordinates on the display surface) It is composed of an initial arrangement X-coordinate and an initial arrangement Y-coordinate indicating a display position on the surface. In FIG. 3, for example, the left eye, the right eye, and the mouth are shown as the constituent parts.

The VDP 34 writes the image data in the bit array format before the transformation and the image data in the bit array format after the transformation given from the CPU 31 into the VRAM 34. VRA
As M34, for example, a semiconductor memory is used, and an image to be displayed is stored for each screen. The image data written in the VRAM 34 is the TV display (display means) 3
Displayed by 6. The CPU 31 constitutes a displayable area setting means, a deforming means, a judgment area creating means, an image position determining means, and further an arithmetic means.

FIG. 4 is a diagram for explaining the coordinate data stored in the internal register 31a of the CPU 31 described above. In FIG. 4, the internal register 31a includes
For each constituent part, the X coordinate of the reference point A ′, which is a point representing the position of the constituent part on the display surface, the Y coordinate of the reference point A ′,
As relative positions of the other vertices of the constituent parts from the reference point A ′, the relative X coordinate of the point B ′, the relative Y coordinate of the point B ′, the relative X coordinate of the point C ′, the relative Y coordinate of the point C ′, the point A relative X coordinate of D ', a relative Y coordinate of the point D', and a minimum X coordinate indicating a position on the display surface of a rectangle including the transformed component parts,
The maximum X coordinate, the minimum Y coordinate, and the maximum Y coordinate are stored. In addition, a part number for identifying each component is attached to each component part. Furthermore, the internal register 31
In a, the selected part number for storing the currently selected constituent part is stored, and the constituent part corresponding to the selected part number can be deformed or moved. There is.

Next, the operation will be described. Initial Processing FIG. 5 is a flowchart showing the initial processing when the power is turned on or reset. When the power is turned on or reset and this program starts, first,
In step S10, the initial arrangement X-coordinate and the initial arrangement Y-coordinate are read from the storage device 33 for each component part and substituted into the X-coordinate and Y-coordinate of the reference point A ′ of the internal register 31a of the CPU 31. Next, in step S12,
[0] is substituted for the relative X coordinate of the point B ′ of the internal register 31a of the CPU 31, and the number of pixels in the Y direction read from the storage device 33 is substituted for the relative Y coordinate of the internal register 31a for initialization. Next, in step S14, the number of pixels in the X direction read from the storage device 33 is substituted into the relative X coordinate of the point C ′ of the internal register 31a, and the number of pixels in the Y direction read from the storage device 33 is stored in the relative register of the internal register 31a. Initialize by substituting to Y coordinate. Then, in step S16, the storage device 33
The number of pixels in the X direction read from the
Substitute in the relative X coordinate of the point D ′ of a, and the internal register 31
Initialize by substituting [0] for the relative Y coordinate of a. Thus, in steps S10 to S16, for each part,
The storage device 3 is provided at each of the X coordinate and the Y coordinate of the reference point A ′.
Substituting the initial arrangement X-coordinate and the initial arrangement Y-coordinate stored in 3, the points B ′, C ′, and D ′
Substituting [0] or the number of pixels in the X and Y directions stored in the storage device 33 into the relative X and Y coordinates of. The component parts in this state become a rectangular image shown in FIG.

Next, in step S18, the X coordinate of the reference point A'is substituted for the minimum X coordinate 12 of the internal register 31a for each component part for initialization. Next, step S
At 20, the initialization is performed by substituting the X coordinate of the reference point A ′ + the number of pixels in the X direction into the maximum X coordinate 14 of the internal register 31a for each component part. Then, in step S22, the Y coordinate of the reference point A ′ is substituted into the minimum Y coordinate 16 for each component part to initialize it. Further, in step S24, the maximum Y coordinate 18 is initialized by substituting the Y coordinate of the reference point A ′ + the number of pixels in the Y direction. In this way, in steps S18 to S24, the image of the constituent parts shown in FIG. 1B and the points A ′ and B ′ of the constituent parts,
A rectangle D including all four points C ′ and D ′ (see FIG.
(See (b)). Then, step S26
Then, the constituent parts are displayed by the determination display processing of the selected parts which will be described later. Next, in step S28, it is determined whether or not all the constituent parts stored in the internal register 31a are displayed, and if NO, step S2
Returning to step 6, the same processing is repeated. When the determination display process for all the constituent parts is completed and all the constituent parts are displayed on the display 36, the process exits from step S28 to YES, and the present routine ends.

Main Routine Next, FIG. 6 is a flowchart showing a main program. When this program starts, first, in step S30, key information fetching processing is performed. This is for inputting operation information of each of the switches 32a to 32c in the input operator 32. Next, in step S32, it is determined whether or not the deformation switch 32b is pressed. If the deformation switch 32b is not pressed, the process proceeds to NO and proceeds to step S34. In step S34, the movement switch 3
It is determined whether or not 2c is pressed, and if the movement switch 32c is not pressed, the process returns to NO and proceeds to step S36. In step S36, it is determined whether or not the selection switch 32a has been pressed. If the selection switch 32a has not been pressed, NO is returned to and the routine is ended. In the next routine, steps S30 and thereafter are executed again.

First, when the selection switch 32a is pressed, the process exits from step S36 to YES and proceeds to step S3.
Go to 8. In step S38, the selected part number stored in the internal register 31a of the CPU 31 is changed, and then the routine ends. By this processing, the subsequent deformation processing or movement processing is performed on the constituent part of the part number selected by the selection switch 32a. Next, when the move switch 32c is pressed, the process exits from step S34 to YES and proceeds to step S40. In step S40, the X coordinate and the Y coordinate of the reference point A'of the component part corresponding to the selected part number selected in step S38 are changed according to the direction of the operated movement switch 32c (see FIG. 2). To do. In this case, since only the movement is performed, the relative X coordinate and the relative Y coordinate of each of the points B ′, C ′, and D ′ with respect to the reference point A ′ do not change.

Next, in step S42, the X coordinate of the reference point A'of the component part corresponding to the selected part number,
The minimum X coordinate 12 and the maximum X coordinate 14 are calculated from the relative X coordinates of the points B ′, C ′, and D ′. Then, in step S44, the minimum Y coordinate 16 and the maximum Y coordinate are calculated from the Y coordinate of the reference point A'of the constituent parts of the selected part number and the relative Y coordinates of the points B ', C'and D'. Calculate 18.
Thus, in steps S42 and S44,
The minimum X coordinate 12, the maximum X coordinate 14, the minimum Y coordinate 16 after the movement of the component part corresponding to the selected part number,
And a maximum Y coordinate 18 is obtained. Next, step S4
6, minimum X coordinate 12, maximum X coordinate 14, minimum Y
Based on the coordinate 16 and the maximum Y coordinate 18, the determination display process of the selected part to be described later is executed to determine and display the display position. By moving the component parts,
There is a possibility that the displayable range C shown in FIG.
Therefore, in steps S42 and S43, the minimum X coordinate 12, the maximum X coordinate 14, the minimum Y coordinate 16, and the maximum Y coordinate 18 of the component part after movement are calculated, and the component part is displayed by the determination display process described later. Possible range C
Determine whether it is in or out,
If it is protruding, the coordinates of the protruding point are changed and displayed. The details of the determination display process will be described later.

Next, when the deformation switch 32b is pressed, the process exits from step S32 to YES and proceeds to step S4.
Go to 8. In step S48, transformation processing is performed to transform the image data so that the coordinates of the reference point A'of the constituent part corresponding to the selected part number do not change. A well-known method may be used for the graphic deformation processing, or a polygon division deformation method described below may be used. Next, step S50.
Then, the relative X-coordinate and the relative Y-coordinate of the point B ′ of the constituent part corresponding to the selected part number are changed in accordance with the above-mentioned transformation process. Further, in step S52, the relative X coordinate and the relative Y coordinate of the point C ′ of the constituent part corresponding to the selected part number are changed. Further, in step S54, the relative X coordinate and the relative Y coordinate of the point D'of the constituent part corresponding to the selected part number are changed.

Next, in step S42, the minimum X coordinate 12 and the maximum X coordinate 1 are calculated from the X coordinate of the reference point A'and the relative X coordinates of the points B ', C'and D'.
4 is calculated, and in step S44, the minimum Y coordinate 16 and the maximum Y coordinate 18 are calculated from the Y coordinate of the reference point A ′ and the relative Y coordinates of the points B ′, C ′, and D ′.
Finally, in step S46, the minimum X coordinate 1
2, maximum X coordinate 14, minimum Y coordinate 16, maximum Y coordinate 18
Based on the above, the determination display processing of the selected part described later is executed to determine the display position and display.

Judgment Display Processing Next, FIG. 7 is a flowchart showing a subroutine of the judgment display processing in step S26 of the initial processing and step S46 of the main routine. As described above, this process determines whether or not the constituent part is within the displayable range C (see FIG. 1A) when the constituent part is moved or deformed, and when the constituent part is projected. Is a routine for changing the coordinates of the corresponding points of the constituent parts and displaying them within the displayable range C.

When this subroutine is executed, first, at step 60, the minimum X coordinate 12 of the constituent part indicated by the selected part number in the internal register 31a of the CPU 31 is the upper left X coordinate 8x or more of the display range shown in FIG. Is determined, and the minimum X coordinate 12 is the upper left X coordinate 8 of the display range.
If it is smaller than x, that is, if it is outside the displayable range C, the process returns to NO and proceeds to step S62. In step S62, the X coordinate of the reference point A'in the internal register 31a is changed so that the minimum X coordinate 12 becomes equal to the display range upper left X coordinate 8x, and the process proceeds to step S64.
On the other hand, if the minimum X-coordinate 12 of the component is equal to or more than the upper left X-coordinate of the display range 8x, that is, if it is within the displayable range C, the process exits YES from step S60 and proceeds directly to step S64.

Next, in step S64, it is determined whether or not the maximum X coordinate 14 of the constituent part indicated by the selected part number is less than or equal to the lower right X coordinate 9x of the display range, and the maximum X coordinate 14 is the right display range. If it is larger than the lower X coordinate 9x, that is, if it is outside the displayable range C, the process returns to NO and proceeds to step S66. In step S66, the maximum X coordinate 14 is set to be equal to the lower right X coordinate 9x of the display range.
The X coordinate of the reference point A'in the internal register 31a is changed, and the process proceeds to step S68. On the other hand, the maximum X of component parts
If the coordinate 14 is not more than the lower right X coordinate 9x of the display range, that is, if it is within the displayable range C, step S64.
To YES, the process directly proceeds to step S68.

Next, in step S68, it is determined whether or not the minimum Y coordinate 16 of the constituent part indicated by the selected part number is equal to or more than the upper left Y coordinate 8y of the display range, and the minimum Y coordinate 16 is the upper left Y of the display range. If it is smaller than the coordinates 8y, that is, if it is outside the displayable range C, the process returns to NO and proceeds to step S70. In step S70, the minimum Y coordinate 16 is set to be equal to the upper left Y coordinate 8y of the display range.
The Y coordinate of the reference point A'in the internal register 31a is changed, and the process proceeds to step S72. On the other hand, the minimum Y of the constituent parts
If the coordinate 16 is the upper left Y coordinate of the display range 8y or more, that is, if it is within the displayable range C, step S68.
From YES to YES, the process directly proceeds to step S72.

In step S72, the maximum Y coordinate 18 of the constituent part indicated by the selected part number is the lower right Y of the display range.
If the maximum Y coordinate 18 is larger than the lower right Y coordinate 9y of the display range, that is, if the maximum Y coordinate 18 is outside the displayable range C, the process proceeds to NO and proceeds to step S74. In step S74, the maximum Y coordinate 18
The Y coordinate of the reference point A'in the internal register 31a is changed so that is equal to the lower right Y coordinate 9y of the display range, and the process proceeds to step S76. On the other hand, the maximum Y coordinate of the component is 1
If 8 is at the lower right Y coordinate of the display range 9y or less, that is, if it is within the displayable range C, Y from step S72.
After exiting ES, the process directly proceeds to step S76.

Thus, the minimum X coordinate 1 of the constituent parts
2, maximum X coordinate 14, minimum Y coordinate 16, maximum Y coordinate 18, display range upper left X coordinate 8x, display range upper left Y coordinate 8y, display range lower right X coordinate 9x, and display range lower right Y coordinate 9y. Comparing the two, the display range C of the component parts
If it is out of the range, the X coordinate or the Y coordinate of the reference point A ′ is changed to the display range coordinate which is the maximum displayable value. Then, in step S76, the display 3
The image data is sent to the VDP 34 so that the image data is displayed at the coordinate position of the reference point A ′ on the display surface 6. As a result, the image data written in the VRAM 34 is displayed on the TV display 36.

As described above, according to the image display position determining method of the present embodiment, the parts (eg, the eyes and mouth of the character) forming a part of the character or the background are deformed in animation, game, etc. When creating a character or a background, it is possible to obtain an effect that a defect such as a component part being displayed at an unexpected position does not occur.

The case where the transformation from a rectangle to an arbitrary quadrangle is used has been described above as an example of the method of detecting the display position when the constituent parts are moved or transformed.
However, in practice, the display position detection method according to the present embodiment can be applied to any modification. FIG. 8 is a diagram showing an example in which the polygon division modification method is used as a modification method of graphic data. In this polygon division modification method, the graphic data of the constituent parts are divided into small rectangles, and each small rectangle is deformed. In FIG. 8A, the figure data is divided into four vertical divisions and six horizontal divisions in total of 24 small rectangles (1), (2), (3), ...
..., divided into (23) and (24). Moving figure data,
Or, the transformation is the small rectangles (1), (2), (3), ...
, (24), and as shown in FIG. 8 (b), small rectangles (1) ', (2)', (3) ', ... (23)', ( 2
4) '. In this case, as shown in FIG. 8B, a rectangle E including all lattice points indicated by X is calculated, and the minimum X coordinate 12 and the maximum X are calculated from the upper, lower, left, and right frames of the rectangle E.
The coordinates 14, the minimum Y coordinate 16, and the maximum Y coordinate 18 may be obtained. When the transformation as in this example is performed, the X coordinate of the grid point indicated by Δ is the minimum X coordinate 12, the X coordinate of the grid point indicated by ▲ is the maximum X coordinate 14, and the Y coordinate of the grid point indicated by □. Is the minimum Y coordinate 16 and the Y coordinate of the grid point indicated by the black square is the maximum Y coordinate 18. In this way, even if a complicated transformation such as the polygon division transformation method is used, its display position can be accurately detected, so even characters with a wide variety of animations, games, etc. can be created without problems. can do.

[0034]

According to the present invention, a displayable area in which image data to be deformed can be displayed is set, and each time the image data is deformed, a determination indicating the size of the deformed image data is made. Since the area is created and the display position of the transformed image data is determined so that the judgment area falls within the displayable area, the transformed image data is displayed at an unexpected position. Does not occur. Moreover, since the display position of the component is detected and corrected after the deformation without limiting the range of deformation of the component from the beginning, the function of the deformation can be utilized to the maximum. Further, even if a complicated transformation such as a polygonal division transformation method is used, the display position can be accurately detected, and a character such as an animation or a game can be created without trouble and rich in variation.

[Brief description of drawings]

FIG. 1 is a diagram illustrating the principle of an image display position determining method according to the present invention.

FIG. 2 is a block diagram showing a configuration of an embodiment of an image ideographic position determining apparatus that realizes an image display position determining method according to the present invention.

FIG. 3 is a diagram for explaining data of each component stored in the storage device of the embodiment.

FIG. 4 is a diagram for explaining coordinate data stored in an internal register of the CPU of the same embodiment.

FIG. 5 is a flowchart showing an initial process of the embodiment.

FIG. 6 is a flowchart showing a main program of the embodiment.

FIG. 7 is a flowchart showing a subroutine of determination display processing of the same embodiment.

FIG. 8 is a diagram showing a modified example of the image of the embodiment.

[Explanation of symbols]

31 CPU (displayable area setting means, deforming means, determination area creating means, image position determining means, arithmetic means) 31a internal register (storing means) 32 input operator 32a constituent part selection switch (constituent part selecting means) 32b deforming switch (Deformation instruction means) 32c Movement switch (movement instruction means) 33 Storage device (storage means) 34 VDP 35 VRAM 36 TV display C Displayable range (displayable area) D, E rectangle (determination area)

Claims (16)

[Claims] 1. A displayable region capable of displaying image data to be transformed is set, and a determination region representing the size of the transformed image data is created each time the image data is transformed, A method for determining an image display position, characterized in that the display position of the image data is determined so that a determination area is within the displayable area. 2. A displayable area capable of displaying image data to be moved is set, and a determination area representing the size of the image data after the movement is created each time the image data is moved, A method for determining an image display position, characterized in that the display position of the image data is determined so that a determination area is within the displayable area. 3. The image display position determining method according to claim 1, wherein the displayable area is a rectangle, and the determination area is a minimum rectangle including all image data after transformation. 4. The image display position according to claim 1, wherein the displayable area is a rectangle, and the determination area is a rectangle smaller than a minimum rectangle including all image data after transformation. How to decide. 5. The image display determination method according to claim 3, wherein the displayable area is represented by XY coordinates of at least two diagonal points. 6. The image display determination method according to claim 3, wherein the determination area is represented by XY coordinates of four diagonal points. 7. The image display determining method according to claim 1, wherein the image data is each of a plurality of constituent parts that form an image. 8. In the process of transforming image data, a transform target having image data in a bit array format is divided into a plurality of small polygons, and each of these small polygons is transformed into different small polygons according to a predetermined transforming process. 2. The image display position determining method according to claim 1, wherein a polygon division deformation method is used that deforms each of the divided small polygons into different small polygons based on the data to be deformed. 9. A displayable area setting means for setting a displayable area capable of displaying image data to be deformed, a deforming means for deforming the image data according to a predetermined deformation process, and the image data by the deforming means. Each time the image data is deformed, a determination region creating unit that creates a determination region representing the size of the image data after the deformation; and each time the image data is deformed by the deforming unit, the determination region creating unit creates the determination region. An image display position determining device for determining the display position of the image data so that the determination region falls within the displayable region. 10. A moving means for moving the coordinates of the image data according to a predetermined moving process to change the display position of the image data while keeping the shape of the image data as it is, Each time the image data is moved by the moving means, a determination region representing the size of the image data after the movement is created, and the image position determining means, the image data is moved every time the image data is moved by the moving means. 10. The image display position determining device according to claim 9, wherein the display position of the image data is determined so that the determination region created by the determination region creating means falls within the displayable region. 11. Storage means for storing image data in a bit array format, the number of pixels representing the size of the image data, coordinates representing a displayable area of the image data, and initial placement coordinates of the image data. And calculating display coordinates representing the display position of the image data according to the number of pixels and the initial arrangement coordinates stored in the storage means, and determining region coordinates representing the determination region according to the display coordinates and the number of pixels. The image display position determining device according to claim 9 or 10, further comprising: a calculating unit that calculates a value and a storage unit that stores the display coordinates and the determination area coordinates calculated by the calculating unit. 12. The image data is each of a plurality of constituent parts that form an image, and a constituent part selection unit that selects a constituent part to be processed among the plurality of constituent parts is provided. The image display position determination device according to claim 9 or 10. 13. The apparatus according to claim 12, further comprising movement instruction means for instructing a movement and a movement direction with respect to the constituent part selected by the constituent part selecting means.
The image display position determination device described. 14. The image display position determining apparatus according to claim 12, further comprising deformation instruction means for instructing deformation of the constituent part selected by the constituent part selecting means. 15. The transforming means divides a transform target having image data in a bit array format into a plurality of small polygons, and transforms each of these small polygons into different small polygons according to a predetermined transforming process. 10. The image display position determining apparatus according to claim 9, wherein each of the divided small polygons is transformed into a different small polygon based on the above. 16. The image display position determining device according to claim 9, further comprising display means for displaying the image data after the deformation which is deformed by the deforming means.