JP3142191B2 - Graphic processing unit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a graphic processing apparatus for drawing a three-dimensional graphic with the aid of a computer, and more particularly, to a graphic processing apparatus capable of efficiently performing a three-dimensional graphic deformation operation.

[0002]

2. Description of the Related Art In recent years, computer-assisted graphic processing apparatuses have been actively used for architectural design and creation of various images and graphics. In this device, a three-dimensional figure is displayed on a screen, the figure element (a face, a ridge line, a vertex) is selected, and then the amount of movement of the figure element is input, thereby transforming the three-dimensional figure on the display screen. Is possible.

The editing for deforming a three-dimensional figure is performed in a conventional figure processing apparatus according to an operation procedure shown in FIG.
On the initial screen of the display screen, a triangular prism 1 which is a three-dimensional figure to be edited and a mouse cursor 2 for indicating an operation position are displayed (a). On this screen, a mouse operation of moving the mouse cursor 2 to one surface of the triangular prism 1 is performed, and when the mouse is clicked (press and release the mouse button quickly) (b), the surface 3 which is a graphic element is selected. The selected surface 3 is displayed with higher brightness than the normal display, and is distinguished from other unselected portions (c).

Next, when the mouse button is pressed and dragged (the mouse is moved while holding down the mouse button) while the mouse cursor 2 is positioned on the selected surface 3, the selection is made according to the mouse operation. The selected surface 3 moves parallel to the normal direction of the surface 3 or the selected surface moves and expands in a similar manner, and the temporarily deformed figure 5 is displayed (d).

The user performs this movement operation while looking at the screen, and when the surface 3 moves to the intended position, the mouse
When the button is released, the surface 3 is fixed at that position, the display returns to the normal luminance display, and the original triangular prism 1 is deformed (e).

By doing so, one of the faces (faces 3) of the original three-dimensional figure (triangular prism 1) (ie, the four vertices in the original figure) is translated in the normal direction of the face, or The size is enlarged in a similar manner according to the moving distance, and the shape is changed to a new shape.

[0007] A graphic processing apparatus for performing such processing is as follows.
As shown in FIG. 17, a position coordinate input means 11 such as a mouse for designating an input position on a display screen and a graphic processing means 12 for processing graphic data in a predetermined procedure, as shown in FIG.
Storage means 13 for storing information such as the shape and position of the figure.
And a graphic display means 14 for displaying a three-dimensional graphic or the like on a screen.

[0008] FIG.
As shown in FIG. 8, the following data required to execute such an operation is stored. As shown in FIG. 19A, the figure data is obtained from a number for identifying a three-dimensional figure, a name of the figure, a figure type name representing a type of the figure (a triangular prism, a square prism, etc.), and coordinate data of each vertex of the figure. Be composed.

The deformation pattern information indicates the type of deformation of the figure (parallel movement or similar enlargement), and the selected position information indicates the coordinates of the input position on the screen where the mouse click operation was performed to select the figure. Indicates a value.

As shown in FIG. 19B, the temporarily deformed graphic data is graphic data searched and copied based on the selected position information.

Further, the movement amount input information indicates a movement amount input by a mouse drag operation.

The graphic processing means 12 executes various graphic processings according to the data input by the mouse while operating these data stored in the storage means 13.

An operation procedure in a conventional graphic processing apparatus is as follows.
As shown in FIG. 20, after performing the initial setting (steps 1 to 3) of the storage means 13, a graphic element is selected (step 4).
8), the graphic elements are moved (steps 9 to 13), and the end processing is executed (steps 14 to 15).
The overall process proceeds. The individual processing procedures are as follows.

As shown in FIG. 21, the initial setting of the storage means 13 is as follows: Step 1: Read graphic data from a file and store it; Step 2: Set deformation pattern information of the storage means 13 to a default value "parallel movement" Then, the selected position information, the movement amount input information, and the temporarily deformed figure data are cleared. Then
Step 3: Display the read graphic data (FIG. 25)
(A)).

Next, when the operator moves the mouse to select a graphic element of a surface, an edge or a vertex of one graphic (FIG. 25B), the operation is performed as shown in FIG. Perform the actions in the procedure. Step 4: Receiving input of data of the selected position where the click operation has been performed by the mouse, and Step 5: Search for the selected graphic element from the graphic data based on the selected position information. Step 6: If the corresponding graphic data is not found at this time, the processing is repeated from Step 4, and Step 7; if found, it is copied to the storage area of the temporarily deformed graphic data. Step 8: The found graphic element is highlighted by the graphic display means 14 with a higher luminance than the normal display (FIG. 25 (c)).

Thereafter, when the operator performs a mouse operation for moving the position of the selected graphic element, the graphic is deformed according to the procedure shown in FIG. Step 9: When the amount of movement due to the drag operation of the mouse is input, Step 10: Based on the movement amount input information and the contents of the deformation pattern information (parallel movement or similar enlargement), temporarily deformed graphic data (position of graphic Information). In addition,
A calculation algorithm for obtaining coordinate values of a graphic element after movement has been put to practical use in a CAD (Computer Aided Design) system or the like, and the type of a graphic (a triangular prism, a quadrangular prism, etc.) and the type of an element (a surface , Ridges, vertices)
And various combinations are known for each combination of and deformation pattern information (similar enlargement, parallel movement). Step 11: Next, the change result of the temporarily deformed graphic data obtained in step 10 is displayed (FIG. 25D).

Step 12: The input of the movement amount by the mouse is repeated as long as the mouse is moved while the mouse button is pressed, and the input stops when the mouse button is released. . In step 9, only the temporary movement amount is input. Therefore, here, steps 9 to 11 are repeated until the input is completed. Step 13: When the input of the movement amount is completed, the original graphic data is replaced with the temporarily deformed graphic data updated by the previous input and updated.

Finally, as shown in FIG.
4: Clear the storage areas of the deformation pattern information, the selected position information, the temporary deformation graphic data, and the movement amount input information, and step 15; display the updated result of the graphic data (FIG. 2).
5 (e)).

As described above, in the conventional graphic processing apparatus, when the operator selects a graphic element displayed on the screen with the mouse,
When the selected graphic element is displayed with high brightness and the operator performs an operation of moving the highlighted graphic element on the screen while watching the state of the deformation of the three-dimensional figure, the amount of movement is reduced. The three-dimensional figure is deformed and displayed accordingly.

When the deformation pattern information is set to "similar expansion", the selected graphic element is expanded and deformed in a similar manner in proportion to the movement amount. Other operations are the same as those in the case of “translation”.

[0021]

In the conventional graphic processing device, a deformation pattern such as parallel movement or enlargement movement is set in advance, and thereafter a series of deformation operations of selecting a graphic element and moving it are executed. . However, at the point of time when the graphic element is selected, the operator cannot visually grasp the shape of the three-dimensional graphic after the deformation. Therefore, when you select a graphic element and move the figure a little,
Or, after moving, it often happens that the user notices that the deformed shape is different from the intended one. In such a case, an operation to cancel the previous deformation operation,
After performing the operation of changing the deformation pattern, it is necessary to perform the same deformation operation again.

The present invention solves the above-mentioned drawbacks of the conventional graphic processing apparatus. In the graphic processing apparatus, when a graphic element is selected, the general shape of the object to be deformed is displayed so that the deforming operation can be easily performed. It is intended to provide a device.

[0023]

Therefore, according to the present invention, a three-dimensional graphic deformed in accordance with an operation of selecting a graphic element of a three-dimensional graphic displayed on a screen and an operation of moving the selected graphic element. In the graphic processing device for displaying the graphic display, there is provided a deformation notice graphic display means for displaying the selected graphic element shifted by a certain distance in the moving direction between the time when the graphic element is selected and the time when the moving operation is started. I have.

Further, there is provided a shift direction setting means for setting a moving direction of the graphic element when the selected graphic element is displayed while being shifted by a predetermined distance.

Further, the shifting direction setting means is configured to set the moving direction of the three-dimensional figure based on the designation of the direction with respect to the coordinate axis representing the spatial position.

Further, the shifting direction setting means is configured to set the moving direction of the three-dimensional figure based on the designation of the direction with respect to the coordinate axis representing the position on the screen.

Further, the shift direction setting means is configured to set the internal direction or the external direction of the three-dimensional figure as the moving direction.

Further, there is provided a shift amount setting means for setting a shift amount when the selected graphic element is shifted in the moving direction and displayed.

Further, the shift amount is set so that the shift amount is set at a fixed ratio with respect to the size of the screen displaying the three-dimensional figure.

The moving amount is set so that the shifting amount setting procedure has a fixed ratio to the size of the graphic element.

Further, the shift amount setting procedure is configured to set the shift amount to an integral multiple of the reference length unit in the coordinate system representing the spatial position of the three-dimensional figure.

[0032]

Therefore, when the operator selects a graphic element (vertex, ridgeline, face) to deform the three-dimensional graphic, the graphic element is displayed with a certain distance shifted in the moving direction. The graphic that informs of this deformation (deformation notice graphic) visually informs the operator of the approximate shape of the deformed three-dimensional figure.

When the operator starts moving the selected graphic element, the deformation notice graphic disappears from the screen.

In this apparatus, the moving direction of the deformation notice graphic can be set. The moving direction can be set by designating the coordinate system of the coordinate system representing the spatial position of the three-dimensional figure or the coordinate system representing the position on the screen in the positive direction or the negative direction. Further, the moving direction can be designated inside or outside the three-dimensional figure.

Further, in this apparatus, the moving amount of the deformation notice graphic can be set. This movement amount can be set to a predetermined ratio to the screen size, set to a length proportional to the size of the selected graphic element, such as the length or area, or a coordinate system reference for displaying the spatial position of the three-dimensional figure. It can be set to an integral multiple of the length unit.

[0036]

【Example】

(First Embodiment) A graphic processing apparatus according to an embodiment of the present invention changes its display in the order shown in FIG. 1 in accordance with an operation of deforming a graphic on a screen.

On the initial screen of the display screen, a triangular prism 1 as a three-dimensional figure to be edited and a mouse cursor 2 for indicating an operation position are displayed (a). On this screen, when the operator moves the mouse cursor 2 to one surface of the triangular prism 1 and clicks it (b), the surface 3 which is a partial figure thereof is selected and displayed with high brightness (c).

Subsequently, a figure (transformation notice figure 4) in which the selected surface 3 is translated or enlarged by a fixed amount in the normal direction is displayed (d). At this time, the mouse cursor remains at the position when surface 3 was selected.

Next, in order to move the surface 3, the mouse
When the mouse button is pressed with the cursor position as it is (overlapping the surface 3), the deformation notice graphic 4 disappears (e). Subsequently, when the mouse is dragged, the selected surface 3 is translated or enlarged in the normal direction of the surface 3 in accordance with the amount of movement, and at the same time, the temporarily deformed figure 5 is displayed (f).

When the user moves the surface 3 while watching the screen, and releases the mouse button when the surface 3 moves to the intended position, the surface 3 is fixed at that position.
A triangular prism deformed from the original triangular prism 1 is displayed again with normal luminance (g).

As described above, in the graphic processing apparatus of the embodiment,
When the operator selects a graphic element (in this case, a face)
The deformation notice graphic is displayed on the screen. Therefore, after confirming that there is no error in the deformation that the operator intends to perform, the operator can input the movement amount and deform the graphic.

Although the basic configuration of the graphic processing apparatus for performing this processing procedure is the same as that of the conventional apparatus (FIG. 17), the graphic processing apparatus of the present invention has its graphic processing means 12 as shown in FIG. In addition to the graphic processing unit 21 for executing the same processing procedure as that of the conventional graphic processing device, the graphic processing unit 21 includes a deformation notice graphic display processing unit 22 for displaying a deformation notice graphic.

As shown in FIG. 3, the storage means 13 stores data necessary for executing such an operation, in addition to the data (FIG. 18) required by the conventional graphic processing apparatus, as shown in FIG. "Deformation notice graphic data" for displaying the deformation notice graphic, "Shift direction information" indicating in which direction the deformation notice graphic is displaced and displayed, and "Shift amount information" indicating the shift amount at that time are stored. ing.

The graphic processing means 12 executes various graphic processings in accordance with the data input by the mouse while operating the data stored in the storage means 13.

As shown in FIG. 5, the operation procedure in the graphic processing apparatus of the embodiment is as follows. After initial setting of the storage means 13 (steps 1 to 3), a graphic element is selected (steps 4 to 8). Then, the deformation notice graphic is displayed (Steps 20 to 24), the graphic elements are moved (Steps 9 to 13), and finally the end processing (Step 1)
The overall processing proceeds in the order of performing steps 4 to 15). The individual processing procedures are as follows.

The procedure for initial setting of the storage means 13 is the same as that shown in FIG. 21; step 1: read graphic data from a file and store it; "Move" and set the shift direction information to the default values "X coordinate axis positive direction, Y coordinate axis positive direction,
The Z coordinate axis is set in the positive direction, the shift amount information is set to the default value “1”, and the selected position information, the movement amount input information, the temporary deformation graphic data, and the deformation notice graphic data are cleared. Next, step 3; the read graphic data is displayed (FIG. 1A).

Next, when the operator moves the mouse to select a graphic element of a surface, an edge or a vertex of one graphic (FIG. 1B), the same operation as in FIG. Execute the selection operation of the graphic element in the procedure. Step 4: Receiving input of data of the selected position where the click operation has been performed by the mouse, and Step 5: Search for the selected graphic element from the graphic data based on the selected position information. Step 6: If the corresponding graphic data is not found at this time, the processing is repeated from Step 4, and Step 7; if found, it is copied to the storage area of the temporarily deformed graphic data. Step 8: The found graphic element is highlighted by the graphic display means 14 with higher luminance than normal display (FIG. 1 (c)).

Subsequently, the operation of displaying the deformation notice graphic 4 which is a feature of the present invention is executed according to the procedure of FIG. Step 20: The temporary deformed graphic data copied in step 7 is further copied into deformation notice graphic data, and step 21: the deformation notice graphic data is converted into the original graphic data type, the selected graphic element type, and the deformation pattern. Based on the contents of the information, the shift direction information and the shift amount information, the information is deformed and updated using a figure deformation algorithm. Step 22: The result of the update is displayed (FIG. 1D), and Step 23: Waiting for the start of input of the movement amount. However, here:
If an instruction to interrupt the work has been input, the process ends. Step 24: When the input of the movement amount is started, the deformation notice graphic 4 is deleted (FIG. 1E).

After the input of the movement amount is started, the position of the graphic element selected by the procedure shown in FIG. 23 is moved to deform the three-dimensional figure, as in the conventional apparatus. Step 9: When the amount of movement by the mouse drag operation is input, step 10: Change the temporarily deformed figure data in accordance with the contents of the movement amount input information and the deformation pattern information. Step 11: Next, the result of changing the temporarily deformed graphic data obtained in step 10 is displayed (FIG. 1 (f)). Step 12: The operations from Step 9 to Step 11 are repeated as long as the mouse keeps moving while the mouse button is pressed and the input of the movement amount from the mouse continues. Step 13;
When the input of the movement amount is completed, the original graphic data is replaced with the temporarily deformed graphic data updated by the previous input and updated.

Next, an end process is executed according to the procedure shown in FIG. Step 14: Clear the storage areas of the deformation pattern information, the selected position information, the temporary deformation graphic data, the movement amount input information, the deformation notice graphic data, the shift direction information and the shift amount information, and step 15; the graphic data is updated. The result is displayed (FIG. 1 (g)).

As described above, in the graphic processing device of the present invention,
In the three-dimensional figure deformation operation, the figure is set at the set position according to the type of the three-dimensional figure, the type of the graphic element, the pattern of the deformation, etc., from when the graphic element is selected to when the input of the movement amount is started. By shifting and displaying the elements, an outline of the movement result can be displayed in advance before the movement amount is input.

The mouse operation on the display screen is not limited to a general mouse operation such as click and drag, but may be a double click operation (pressing a button quickly and twice) or a recent general operation. GUIs often used
(Graphical User Interface: an interface method in which electronic buttons and menus are arranged on the screen and input operation is performed by mouse operation) can be adopted.

In addition to the input operation of the three-dimensional position by the combination of the mouse drag operation and the button, the input of the three-dimensional position information is performed directly by using a sensor device or the like that reads the three-dimensional position magnetically. It is also possible to adopt a position input method, a method of directly inputting a three-dimensional position by a numerical value using a keyboard, or the like.

In this embodiment, a surface is taken as a moving graphic element. However, it goes without saying that elements such as edges and vertices can be handled in the same manner.

(Second Embodiment) In a second embodiment, in this graphic processing apparatus, the "shift direction information" of the deformation notice graphic is used.
The operation when setting is described.

As shown in FIG. 1D, when the surface 3 is selected by the mouse, the deformation notice graphic 4 is displayed at a position shifted by a predetermined distance in the normal direction of the selected surface 3. However, there are two normal directions for the surface 3, that is, a direction toward the outside and a direction toward the inside of the three-dimensional figure.
Depending on the setting of the shift direction information, the shift direction of the deformation notice graphic is determined to one of them.

On the display screen for setting the shift direction information,
As shown in FIG. 7, a graphic display area 6 for displaying an edited graphic
And a shift direction setting panel 9 for inputting the setting of the shift direction information are displayed. The operator selects the setting condition displayed on the setting panel by operating the mouse.

FIG. 7 shows a screen example when the shift direction information is set in the direction with respect to the axis of the world coordinate system (coordinate system representing the position of the space of the three-dimensional figure). The operator
Each of the coordinate axes “X axis”, “Y axis” and “Z axis” is
Use the mouse cursor to select whether to take in the (positive) direction or in the-(negative) direction. In accordance with the selection, a symbol (circle) is displayed at a corresponding position in the table of the shift direction setting panel 9, and a deformation notice in which the selected face 3 of the three-dimensional figure 1 is shifted in the set direction is displayed in the figure display area 6. FIG. 4 is displayed.

FIG. 7A shows that when the coordinate system of the graphic display is the coordinate axis 7 (which is not necessarily displayed on the display screen), the shift direction information is represented by X in the world coordinate system.
A display example is shown in a case where all axes are set in the positive direction with respect to the Y, Z, and Z axes (hereinafter, referred to as “world coordinate system (X, Y, Z) = (+, +, +)”). ing. At this time, the deformation notice graphic 4 has a normal that satisfies the setting condition of the shift direction information more out of the two normals of the surface 3 (that is, the X, Y, or Z axis component of the normal has more Move in the direction of the positive normal).

In FIG. 7B, the coordinate system of the graphic display is the same as that of FIG. 7A, and the displacement direction information is “world coordinate system (X, Y, Z) = (+, −, + ) "Is shown. At this time, the deformation notice graphic 4 has the X-, Y-, or Z-axis component of the two normals of the surface 3 that satisfies the setting condition of the shift direction information more (therefore, FIG. 7). (The direction opposite to the case of (a)).

FIG. 7 (c) shows the shift direction in FIG.
(A) (“World coordinate system (X, Y, Z) = (+,
+, +) ”) Shows a display example in the case where the coordinate system of the graphic display is rotated by 90 degrees from the state of FIG. 7A. Even if the direction of the display coordinate system is changed, if the setting of the shift direction is the same, a movement result similar to that of FIG. 7A is obtained.

In order to perform such processing, the graphic processing apparatus is provided with a shift direction information setting change section 23 in the graphic processing means 12 having a basic configuration, as shown in FIG. The setting / change of the shifted direction information is performed.

The setting of the shift direction in the second embodiment is as follows.
As shown in FIG. 9, step 25: display the shift direction setting panel 9, step 26: receive an input from the operator on the panel, and step 27: update the shift direction information according to the input. Are performed in this order. For inputting the setting, it is of course possible to use a command input method using a keyboard in addition to the input method using the GUI.

The procedure for changing the setting of the shift direction information (steps 25 to 27) is the same as the procedure of the first embodiment, except that after the default value is set at the time of initial setting (step 2), the deformation notice graphic is changed. Create (Step 21)
If executed before this time, it is reflected in the subsequent position display of the deformation notice graphic 4. However, at other times, it is possible to change the contents of the shift direction information.

As described above, by setting and changing the direction in which the deformation notice graphic is shifted, the operator can change the moving direction of the graphic element accompanying the movement operation of the graphic element from the position where the deformation notice graphic is displayed. You can know. Further, as shown in FIG. 7, by setting a shift direction with respect to each axis of the world coordinate system, it is possible to always display a notice figure deformed in the same direction.

(Third Embodiment) In the third embodiment, the shift direction information of the deformation notice graphic is displayed on the screen coordinate axes (screen coordinate system).
The case of setting for will be described. The display screen and the operation of the operator are the same as those in the second embodiment.

FIG. 10 shows the shift direction information in the screen coordinate system 8.
5 shows an example of a screen when the direction is set with respect to the axis. In FIG. 10A, the case where the shift direction information is set in the positive direction (“screen coordinate system (X, Y) = (+, +)”) with respect to the X axis and the Y axis of the screen coordinate system The example of a display of is shown.

At this time, the deformation notice graphic 4 is such that, of the two normals of the surface 3, the direction in the screen coordinate system 8 is a straight line from (0, 0) to (1, 1) on the same coordinate system. Move along the normal closer to the direction of.

In FIG. 10B, the setting of the shift direction (“screen coordinate system (X, Y) = (+, +)”) is the same as FIG. 10A, but is displayed. 9 shows a display example in the case where the directions of the three-dimensional figures are different. At this time, the deformation notice graphic 4 is displayed on the display screen as shown in FIG.
Move in the same direction as.

As described above, when the shift direction information is set for each axis of the screen coordinate system, the deformation notice figure is always displayed in the same direction on the screen even if the display direction of the three-dimensional figure is different. can do.

(Fourth Embodiment) In a fourth embodiment, a case will be described in which the shift direction information of the deformation notice graphic is set in relation to the three-dimensional graphic. The display screen and the operation of the operator are the same as those in the second embodiment.

FIG. 11 shows an example of a screen when the shift direction information is set depending on whether the information is inside or outside the figure. FIG. 11A shows a display example in a case where the shift direction information is set in an outward direction with respect to the solid (“solid (direction) = (outside)”).

At this time, the deformation notice graphic 4 moves in the direction of the normal toward the outside of the three-dimensional figure among the two normals of the surface 3.

In FIG. 11B, the setting of the shift direction (“solid (direction) = (outside)”) is not shown in FIG.
14A shows a display example in the same case as FIG. 14A, but when the direction of the displayed three-dimensional figure is different. At this time, the deformation notice graphic 4 moves in the normal direction toward the outside of the three-dimensional graphic, as in FIG.

Although not shown, when the shift direction is set to “solid (direction) = (inside)”, the deformation notice graphic always moves in the solid internal direction.

As described above, by setting the shift direction to the inside or outside of the solid, a deformation notice graphic that always moves in the enlargement or reduction direction of the solid is displayed regardless of the display direction of the graphic. be able to.

(Fifth Embodiment) In a fifth embodiment, an operation for setting the shift amount information will be described. As shown in FIG. 12, on the display screen, a figure display area 6 for displaying an edited figure and a shift amount setting panel 93 for inputting setting of shift amount information are displayed. The operator operates the mouse or keyboard to input setting conditions to the setting panel.

FIG. 12 shows an example of a screen when the shift amount information is set based on the scale of the screen size. In the columns of “X direction” and “Y direction” of the shift amount setting panel 93, the moving distance in the horizontal and vertical directions of the deformation notice graphic is input in the form of a ratio to the size of the screen. In the graphic display area 6, the deformation notice graphic 4 is displayed at a position away from the selected surface 3 of the three-dimensional graphic 1 by a set distance.

In FIGS. 12 (a), (b) and (c),
This shift amount information is set to one-tenth of the vertical and horizontal dimensions of the screen (“screen dimensions (X,
Y) = (1/10, 1/10)). Also, a reduced scale presentation graphic 10 (which is not necessarily displayed on the display screen) is displayed in the graphic display screen 6, and the size of the three-dimensional graphic is read by comparing with the reduced scale. be able to.

Since the setting conditions of the shift amount information are the same, the moving distance from the selected surface 3 to the deformation notice graphic 4 does not change in each of FIGS. 12 (a), 12 (b) and 12 (c). .

However, FIGS. 12 (a) to (b), (c)
As the three-dimensional figure is reduced and displayed as it goes to, the distance from the three-dimensional figure 1 to the deformation prediction figure 4 is
(B) and (c), it seems to increase.

In order to perform such processing, this graphic processing apparatus includes, as shown in FIG. 13, a shift amount information setting change unit 24 in the graphic processing means 12 having a basic configuration.
The shift amount information stored in the storage unit 13 is changed.

As shown in FIG. 14, the setting of the shift amount in the fifth embodiment is performed in step 28: shift amount setting panel.
93 is displayed, step 29: the operator receives an input on the panel, and step 30: the shift amount information is updated in accordance with the input. Are performed in this order.

The procedure for changing the shift amount information (steps 28 to 30) is the same as that in the operation procedure of the first embodiment.
After setting the default value at the time of initial setting (step 2),
If executed before the deformation notice graphic is created (step 21), it is reflected in the subsequent position display of the deformation notice graphic 4. However, it is possible to change the contents of the shift amount information even at other times.

As described above, by setting the shift amount of the deformation notice graphic and displaying the deformation notice graphic at that position,
The operator can give a guide to the input amount at the time of inputting the movement amount (step 9), and can confirm the deformed shape before inputting the movement amount.

Further, as shown in FIG. 12, when the shift amount is set as a ratio to the size of the screen, the deformation notice graphic of the large graphic is prevented from protruding from the screen with respect to the display screen, or the small graphic is displayed. Can be displayed on the screen so as to be able to be identified.

(Sixth Embodiment) In the sixth embodiment, the shift amount of the deformation notice graphic is determined by the size of the selected graphic element (if the graphic element is a surface, its area, if it is a line, its length). Sa)
, Or a constant value regardless of the size of the graphic element. The display screen and the operation of the operator are the same as those in the fifth embodiment.

FIG. 15 shows an example of a screen when the shift amount information is set in proportion to the size of the graphic element. In the columns for selecting “proportional” and “quantitative” on the shift amount setting panel 94, symbols (circles) are attached according to the selection with the mouse. Further, in the graphic display area, when the face of the triangular prism is selected with the mouse cursor, the deformation notice graphic 4 which is moved by a distance proportional to the area of the selected face is displayed.

15A and 15B, figures having different sizes are displayed at the same scale in the figure display area, and the shift amount setting panel 94 displays the shift amount. Information is the size of the selected graphic element (area if area,
In the case of a ridge line, the length is set. However, in the case of a vertex, the amount is determined regardless of the setting.) At this time, since the movement amount of the deformation notice graphic is proportional to the size of the area of each selected surface, the movement is larger in FIG. 15A than in FIG. 15B.

As described above, by setting the shift amount to a predetermined ratio with respect to the length and area of the selected graphic element, it is possible to display a large graphic if it is large and a small graphic if it is small. The movement display reflecting the feature of the shape becomes possible.

(Seventh Embodiment) In the seventh embodiment, a case will be described in which the shift amount of the deformation notice graphic is set to an integral multiple of the basic unit length of the world coordinate system (coordinate system representing the spatial position of the three-dimensional graphic). I do. The display screen and the operation of the operator are the same as those in the fifth embodiment.

FIG. 16 shows an example of a screen when the shift amount information is set to five times the unit length of the world coordinate system.
In the shift amount setting panel 95, a magnification for the unit length of the world coordinate system is input as a numerical value. In the graphic display area 6, a deformation notice graphic 4 is displayed at a position moved by a set distance from the selected surface 3 of the triangular prism 1.

In the graphic display area 6 shown in FIGS. 16A and 16B, figures having the same size are displayed at different scales. In FIG. 16B, since the size of one unit in the world coordinate system is smaller than that in FIG. 16A, even if the same five units are used, FIG. The amount is small.

In the graphic display area 6 of FIGS. 16A and 16C, three-dimensional figures having different sizes are displayed at the same scale. In this case, since one unit in the world coordinate system has the same size in both cases, the movement amount of the deformation notice graphic 4 has the same length for five units.

As described above, by setting the amount of displacement to be an integral multiple of one unit of the coordinate system where the figure is located, the deformation notice figure can be set to an absolute distance independent of the display state of the screen and the size of the figure. Only to be moved.

In each of the above embodiments, the case where the deformation pattern is set to “parallel movement” has been described. When the setting of the deformation pattern is “similar enlargement”, the deformation notice graphic is displayed as a graphic that is similar enlargement of the selected graphic element. The direction and position in which the deformation notice graphic is formed can be set by the operator himself as in the case of the parallel movement. At this time, the graphic processing device performs the same operation in the case of the parallel movement.

In the embodiment, the moving direction of the selected figure and the direction in which the deformation notice pattern is shifted have been described as the normal direction of the selected plane. However, this direction is different depending on the setting method. It is also possible to take.

[0098]

As is clear from the above description of the embodiment, since the graphic processing apparatus of the present invention can display the deformation notice graphic before the deformation operation of the three-dimensional graphic, the operator can perform the three-dimensional graphic processing. It is possible to confirm the deformation pattern in the deformation of the figure and to grasp the amount of movement required for the next operation. Further, when the deformation pattern is not as desired, the setting conditions can be changed immediately and the deformation can be redone, so that the work efficiency of the graphic processing is improved.

Further, the operator can set the moving direction of the deformation notice graphic by himself. Then, by looking at the deformation notice graphic moved in the set direction, the moving direction of the graphic at the time of deformation can be known.

Further, the operator can set the amount of movement of the deformation notice graphic by himself. Then, by looking at the deformation notice graphic moved by the set amount, the operation amount of the graphic movement can be visually determined.

[Brief description of the drawings]

FIG. 1 is a view for explaining an operation procedure in a graphic processing apparatus according to a first embodiment of the present invention;

FIG. 2 is a block diagram illustrating a configuration of a graphic processing unit in the graphic processing apparatus according to the first embodiment;

FIG. 3 is a diagram illustrating a data configuration stored in a storage unit of the graphic processing apparatus according to the first embodiment;

FIG. 4 is a structural diagram of deformation notice graphic data stored in storage means of the device of the first embodiment;

FIG. 5 is a flowchart showing an overall processing procedure in the apparatus of the first embodiment;

FIG. 6 is a flowchart showing a procedure for displaying a deformation notice graphic in the apparatus of the first embodiment;

FIG. 7 is a view showing an example of a display screen in a second embodiment;

FIG. 8 is a block diagram showing a configuration of a graphic processing unit in the graphic processing apparatus according to the second embodiment;

FIG. 9 is a flowchart showing a procedure for setting shift direction information in the second embodiment;

FIG. 10 is a diagram showing an example of a display screen according to a third embodiment;

FIG. 11 is a diagram showing an example of a display screen in a fourth embodiment.

FIG. 12 is a diagram illustrating an example of a display screen according to a fifth embodiment;

FIG. 13 is a block diagram showing a configuration of a graphic processing unit in the apparatus according to the fifth embodiment;

FIG. 14 is a flowchart showing a procedure for setting shift amount information in a fifth embodiment;

FIG. 15 is a diagram showing an example of a display screen in a sixth embodiment;

FIG. 16 is a view showing an example of a display screen according to a seventh embodiment;

FIG. 17 is a block diagram showing a configuration of a conventional graphic processing apparatus.

FIG. 18 is a diagram showing a configuration of data stored in a storage unit of a conventional graphic processing apparatus.

FIG. 19 is a diagram showing the structures of (a) graphic data and (b) temporarily deformed graphic data stored in storage means of a conventional graphic processing device;

FIG. 20 is a flowchart showing an overall processing procedure in a conventional graphic processing apparatus;

FIG. 21 is a flowchart showing a procedure of initial setting in a conventional graphic processing apparatus;

FIG. 22 is a flowchart showing a procedure for selecting a graphic element in the conventional graphic processing apparatus;

FIG. 23 is a flowchart showing a procedure of moving a graphic element in the conventional graphic processing apparatus;

FIG. 24 is a flowchart showing a procedure of an end setting in the conventional graphic processing apparatus;

FIG. 25 is a diagram illustrating an operation procedure of a conventional graphic processing device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Triangular prism 2 Mouse cursor 3 Selected surface 4 Deformation notice figure 5 Temporary transformation figure 6 Graphic display area 10 Scale presentation figure 11 Position coordinate input means 12 Graphic processing means 13 Storage means 14 Graphic display means 21 Graphic processing unit 22 Deformation notice Figure display processing unit 23 Shift direction information setting change unit 24 Shift amount information setting change unit 7 Coordinate axis (world coordinate system) 8 Coordinate axis (screen) 9, 91, 92, 93 Shift direction setting panel 94, 95 Shift amount setting panel

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G06T 17/40 G06F 17/50

Claims (9)

(57) [Claims] 1. A graphic processing apparatus for displaying a deformed graphic of a three-dimensional graphic according to an operation of selecting a graphic element of a three-dimensional graphic displayed on a screen and an operation of moving the selected graphic element. A graphic displaying means for displaying the selected graphic element shifted from the graphic element by a predetermined distance in the moving direction until the moving operation is started after the graphic element is selected; Processing equipment. 2. A graphic processing apparatus according to claim 1, further comprising a shift direction setting means for setting a moving direction of the graphic element when the selected graphic element is displayed by being shifted by a predetermined distance. apparatus. 3. The graphic processing apparatus according to claim 2, wherein the shift direction setting means sets the moving direction based on designation of a direction with respect to a coordinate axis representing a spatial position of the three-dimensional figure. 4. The graphic processing according to claim 2, wherein said shift direction setting means sets said moving direction based on designation of a direction with respect to a coordinate axis representing a position of said three-dimensional figure on a screen. apparatus. 5. The graphic processing apparatus according to claim 2, wherein the shift direction setting means sets an internal direction or an external direction of the three-dimensional graphic as the moving direction. 6. The graphic processing apparatus according to claim 1, further comprising a shift amount setting means for setting a shift amount when the selected graphic element is displayed shifted in a moving direction. 7. The graphic processing according to claim 6, wherein the shift amount setting step sets the movement amount so as to have a fixed ratio to a size of a screen displaying the three-dimensional figure. apparatus. 8. The graphic processing apparatus according to claim 6, wherein the shift amount setting step sets the moving amount so as to have a fixed ratio with respect to the size of the graphic element. 9. The graphic processing according to claim 6, wherein the shift amount setting step sets the movement amount to an integral multiple of a reference length unit in a coordinate system representing a spatial position of the three-dimensional figure. apparatus.