JP3142992B2 - 3D graphics processor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a three-dimensional graphic processing apparatus for generating a three-dimensional graphic with the support of a computer and displaying the three-dimensional graphic on a screen. In particular, the present invention can clearly display the position of an object in a three-dimensional space. It is configured as follows.

[0002]

2. Description of the Related Art Computers with the aid of computers
The graphic processing device that draws graphics can easily draw a three-dimensional figure in a virtual three-dimensional space on a display screen, deform the three-dimensional figure, and change the position of the three-dimensional figure. Widely used for systems and mechanism design systems.

In the conventional graphic processing apparatus, as shown in FIG. 17, a three-dimensional figure 23 located in a virtual three-dimensional space is displayed on a display screen 20, and the position of the three-dimensional figure in the virtual three-dimensional space is also clarified. In order to achieve this, an auxiliary figure (reference figure) 22 indicating the position reference and the shadow of the three-dimensional figure projected there
43 and are displayed.

In this graphic processing apparatus, the position of the three-dimensional graphic 23 in the virtual three-dimensional space can be moved by using the attached operation device 21.

[0005] When performing this movement, the operator changes the tip position of the operation device 21 three-dimensionally. In conjunction with this operation, the three-dimensional figure 23 on the screen changes its position in the virtual three-dimensional space, and at the same time, the position and shape of the shadow 43 on the reference figure 22 change continuously. The operator is a solid figure
The position of the three-dimensional figure 23 in the virtual three-dimensional space can be grasped based on the relationship between the 23, the reference figure 22, and the shadow 43.

As shown in FIG. 18, a conventional three-dimensional graphic processing apparatus for performing such display includes a three-dimensional position input means 1 for inputting three-dimensional position (and direction) information of an operation device, and three-dimensional position information. A position information reading unit 2 to be read;
A three-dimensional figure data change processing unit 3 for calculating the three-dimensional figure data after the position change, a three-dimensional figure data management unit 4 for holding the figure data of the three-dimensional figure, and a reference figure data management unit 5 for holding the figure data of the reference figure A positional relation processing unit 6 for calculating a position on the reference figure corresponding to the three-dimensional figure position, a shadow generation unit 7 for calculating projected figure data of a three-dimensional figure reflected on the reference figure, and performs data processing for display. A display processing unit 8 and a display unit 9 such as a CRT are provided.

In this device, first, when an operator inputs three-dimensional position information by means of the three-dimensional position input means 1, the position information reading section 2 reads it and passes it to the three-dimensional figure data change processing section 3. The three-dimensional figure data change processing unit 3
Based on the three-dimensional figure data managed by the three-dimensional figure data management unit 4 and the three-dimensional position information, the data of the three-dimensional figure whose position has been changed is calculated, and the data of the three-dimensional figure data management unit 4 is updated.

When the three-dimensional graphic data is updated, the positional relationship processing unit 6 determines the position of the three-dimensional graphic from the updated three-dimensional graphic data and the reference graphic data managed by the reference graphic data management unit 5. Then, the shadow generation unit 7 calculates the figure data of the shadow of the three-dimensional figure reflected on the reference figure according to the calculated position on the reference figure.

When the data processing is completed, the display processing section 8 displays the moved three-dimensional figure and the shadow of the three-dimensional figure projected on the reference figure on the display means 9.

[0010]

However, according to the display by the conventional three-dimensional graphic processing apparatus, a three-dimensional graphic in a three-dimensional space is required.
It is difficult to know the exact position of 23.

A three-dimensional figure projected on the reference figure 22
There is a disadvantage that it takes a lot of time to calculate the 23 shadows 43 and the display of the display means is delayed. In addition, just because the shadow of the three-dimensional figure is accurately calculated and displayed does not necessarily make the grasp of the position of the three-dimensional figure 23 clear.

Further, in the conventional apparatus, it is difficult to move the three-dimensional figure 23 to a specific position. For example, the three-dimensional figure 23 is moved to a position directly above the specific position of the reference figure 22, It was difficult to change places without changing the distance of the city.

The present invention solves such a conventional problem. An operator can accurately grasp the position of a three-dimensional figure, and can accurately place the three-dimensional figure at an intended position in a virtual three-dimensional space. Another object of the present invention is to provide a three-dimensional graphic processing device that can be moved quickly and in a short time.

[0014]

Therefore, according to the present invention, there is provided a three-dimensional graphic processing apparatus for moving the position of a three-dimensional graphic displayed on a screen in a virtual three-dimensional space in response to an input operation by an operator. Reference figure data editing means for editing figure data of a reference figure indicating a reference of a position in a three-dimensional space; projection position figure data editing means for editing figure data for displaying a projection position of a three-dimensional figure projected on the reference figure; There is provided a relation presenting graphic data editing means for editing graphic data of the relation presenting graphic displaying the correspondence between the projection position graphic displaying the projection position and the three-dimensional graphic.

The relation presenting graphic data editing means represents the relation presenting graphic by a line connecting a predetermined point of the three-dimensional graphic and one point of the projection position graphic.

The projection position graphic data editing means expresses the projection position graphic by a graphic having a simple shape independent of the shape of the three-dimensional graphic.

Further, a figure capable of displaying "direction" is used as a figure having a simple shape.

The projection position graphic data editing means and the relation presenting graphic data editing means edit the movement position of the projection position graphic or the relation presenting graphic according to the movement of the three-dimensional graphic.

The projection position graphic data editing means edits the movement position of the projection position graphic according to the input operation of the operator, and moves the three-dimensional figure according to the movement of the projection position graphic.

Further, there is provided a restricting means for restricting the length of the relation presentation graphic from the projection position graphic to the three-dimensional graphic at a constant value.

Further, the projection position graphic data editing means edits the projection position graphic so that the direction of the projection position graphic coincides with the moving direction of the projection position graphic.

Further, there is provided a restricting means for restricting the direction of the projection position figure in a fixed direction.

Further, there is provided a restricting means for restricting a moving range of the projection presented graphic on the reference graphic.

The reference graphic data editing means edits graphic data for displaying a plurality of reference graphics.

Further, each of the plurality of reference figures restricts the moving range of a separate three-dimensional figure.

Further, there is provided a selecting means for selecting a reference figure for restricting the moving range of the three-dimensional figure from a plurality of reference figures.

[0027]

Therefore, an auxiliary graphic including a reference graphic, a relation presentation graphic, and a projection position graphic is displayed on the screen together with the three-dimensional graphic, so that the operator can visually determine the position of the three-dimensional graphic in the virtual three-dimensional space. It can be clearly understood.

The projection position figure is a figure for displaying the projection position of a specific point of the three-dimensional figure, and a simple figure such as a circle or a triangle is used. The relationship presentation graphic is displayed as a line connecting one point of the three-dimensional graphic and one point of the projection position graphic. Editing of these simple figures can be performed in a shorter time than editing complex shadows of a three-dimensional figure, so that these figures can be quickly linked with the input operation of the operator. , Can be changed continuously.

When the operator moves the three-dimensional figure by an input operation, the projection position figure and the relation presenting figure move accordingly.

Further, the operator can move the projection position figure by an input operation and move the three-dimensional figure accordingly.

In this case, the three-dimensional figure moves while maintaining a certain distance from the reference figure by restricting the length of the relation presenting figure to a certain length.

The direction of movement of the projection position graphic and the three-dimensional figure can be indicated by pointing the direction of the projection position graphic in the moving direction.

Further, by restricting the direction of the projection position graphic in a fixed direction, the direction in which the projection position graphic and the three-dimensional graphic can move can be restricted.

Further, by restricting the movable range of the projection position graphic only on the reference graphic, the moving range of the three-dimensional graphic can be clarified.

By displaying one reference figure for each of a plurality of three-dimensional figures, the three-dimensional figure of each three-dimensional figure is displayed.
The positional relationship and the movement range in the three-dimensional space can be displayed in an easily understandable manner.

Further, it is possible to display such that the projection position figure of one solid figure is restricted in the movement range by one selected reference figure among a plurality of reference figures according to the position.

[0037]

【Example】

(First Embodiment) As shown in FIG. 3, a three-dimensional graphic processing apparatus according to a first embodiment of the present invention detects a position origin 27 for generating a reference magnetic field and the strength of a magnetic field in each of three-dimensional coordinate axes. 3D position sensor (operation device) 21 and 3D that outputs 3D position information based on the detection result of the 3D position sensor
It has a three-dimensional digitizer 28 and a screen processing workstation 29 for editing and displaying computer graphics according to the movement of the three-dimensional position sensor.

As shown in FIG. 1A, a three-dimensional figure 23 located in a virtual three-dimensional space, a reference figure 22 indicating a reference position in the virtual three-dimensional space, and a three-dimensional figure A relationship presentation that presents a relationship between the three-dimensional figure 23 and the projection position figure 25 by a projection position figure 25 indicating a projection position when projected on the figure 22 and a line connecting one point of the three-dimensional figure 23 and the projection position figure 25. Figure 24 is displayed. This projection position figure 25
Is a simple pattern graphic that only represents the position, and does not represent the shape of the shadow of the three-dimensional graphic 23.

When the operator changes the position of the operation device 21 three-dimensionally in the state shown in FIG. 1A, the three-dimensional figure 23 is interlocked with the operation as shown in FIG. 1B.
Changes the position in the virtual three-dimensional space.

Accordingly, the relationship presenting graphic 24 continuously changes its shape in accordance with the change in the relationship between the three-dimensional graphic 23 and the reference graphic 22, and at the same time, the projection position graphic 25 changes the three-dimensional graphic 23
Move continuously according to the change of the projection position on the reference graphic 22.

The operator can accurately and easily grasp the position of the three-dimensional figure 23 from the relation of the reference figure 22, the relation presenting figure 24 and the projection position figure 25 in the three-dimensional space.

As shown in FIG. 2, the present apparatus has a relational presentation graphic data management unit 10 for managing the data of the relational presentation graphic and a projection position graphic data management unit 11 for managing the data of the projection position graphic. And a three-dimensional position input unit 1, a position information reading unit 2, a three-dimensional graphic data change processing unit 3, a three-dimensional graphic data management unit 4, a reference graphic data management unit 5, a positional relationship processing unit 6, a display processing unit 8, and a display unit 9.

In this apparatus, first, when an operator inputs three-dimensional position (and direction) information using the three-dimensional position input means 1, the position information reading unit 2 reads the information and passes it to the three-dimensional graphic data change processing unit 3. . The three-dimensional graphic data change processing unit 3 stores the three-dimensional position information and the three-dimensional graphic data
Then, the three-dimensional figure data whose position has been changed is calculated from the three-dimensional figure data managed by the third party, and the data of the three-dimensional figure data management unit 4 is updated.

When the three-dimensional graphic data is updated, the positional relationship processing unit 6 determines the position of the three-dimensional graphic from the updated three-dimensional graphic data and the reference graphic data managed by the reference graphic data management unit 5. The position on the reference figure to be calculated is calculated, and the result is transmitted to the relationship presentation figure data management unit 10 and the projection position figure data management unit 11.

The relation presentation graphic data management unit 10 obtains graphic data of a straight line connecting the position of the moved three-dimensional graphic transmitted from the positional relation processing unit 6 and the corresponding position on the reference graphic, and newly obtains this. The previous data is updated as a simple relationship presentation graphic.

On the other hand, the projected position graphic data management unit 11 translates the previously stored projected position graphic data based on the data representing the position on the reference graphic corresponding to the three-dimensional graphic, and moves the three-dimensional graphic after the movement. The projection position graphic data corresponding to the graphic is obtained, and the data up to that is updated.

The display processing unit 8 displays the moved three-dimensional figure, the relation presenting figure, and the projection position figure on the display means 9 based on the updated data.

The previous data editing in the relationship presentation graphic data management unit 10 and the projection position graphic data management unit 11 requires only simple data conversion, and is therefore compared with the conventional method of calculating projection graphic data of a three-dimensional graphic. It can be processed in an extremely short time. Therefore, it is possible to read the three-dimensional position information, update the three-dimensional graphic data, update the relationship presentation graphic and the projection position graphic data, display them, and repeat a series of subsequent processing at a high speed. Can be continuously confirmed on the screen without delay.

(Second Embodiment) In a second embodiment, the relationship among a three-dimensional figure, a relation presenting figure, and a projection position figure will be described.

As shown in FIG. 4 (a), the relationship presentation graphic 24 is displayed as a vertical line starting from an appropriately determined point 30 on the three-dimensional graphic and descending from this one point to the reference graphic 22.
The projection position graphic 25 is displayed as a graphic having a fixed shape centered on the end point of the relation presentation graphic 24 that has reached the reference graphic 22.

Also, as shown in FIG. 4B, when the point 30 moves due to the rotation of the three-dimensional figure and the shortest position of the three-dimensional figure with respect to the reference figure 22 moves to the vertex 31, the relation presenting figure 24 remains , Always moves with the point 30, and the projection position graphic 25 moves accordingly. As described above, even if the position of the three-dimensional graphic in the virtual three-dimensional space changes, the connection between the one point 30 of the three-dimensional graphic, the relationship presentation graphic 24, and the projection position graphic 25 does not change.

By adopting such a display method, a specific point of the three-dimensional figure can be always specified, so that the operator can easily grasp a change in the position (and direction) of the three-dimensional figure. . Further, even when the three-dimensional figure moves or rotates, there is no need to switch the starting point of the relation presenting figure, so that the relation presenting figure can be created and the position of the projected position figure can be calculated by simple calculations. Data editing for graphic display can be performed quickly.

(Third Embodiment) In a third embodiment, the shape of the projection position figure will be described. As the projection position figure,
As shown in FIG. 5, a simple figure such as a circle 32, a triangle 33 or a quadrangle 34, or a symbol such as a star 36, an arrow 37, and a cross 35 is used.

Since these are all simple shapes and symbols that do not depend on the shape of the three-dimensional figure, much time is not required for data processing for updating and displaying the projection position figure data. Therefore, it is possible to quickly create and display the projection position figure.

(Fourth Embodiment) A three-dimensional graphic processing apparatus according to a fourth embodiment is configured so that a three-dimensional graphic can be moved by changing the position of a projected position graphic.

As shown in FIG. 6A, this apparatus has an instruction input means 38 for designating a specific figure on the screen with a cursor.
Is provided as an attached device, and when the operator instructs the projection position graphic 25 using the instruction input means 38 and changes the position of the operation device 21 three-dimensionally, FIG.
As shown in FIG.
The position in the three-dimensional space is changed, and accordingly, the three-dimensional figure 23 moves on the screen in the horizontal direction and moves right above the position of the projection position figure 25, and at the same time, the relationship presentation figure 24 It moves while continuously changing its shape according to the change in the relationship.

As shown in FIG. 7, the apparatus includes, as functional blocks, an instruction input unit 12 for designating a figure displayed on a screen, and an instruction information reading unit 13 for reading graphic designation information by the instruction input unit 12. And a projection position graphic data change processing unit 14 for performing a process of changing the projection position graphic data. Other points are the same as those of the first embodiment (FIG. 2).

In this apparatus, when the operator designates the projection position graphic by the instruction input means 12, the instruction information reading section 13 reads the designation and the projection position graphic data change processing section 14
, The projection position graphic data change processing unit 14 prepares for the change processing of the projection position graphic data.

Subsequently, when the operator inputs the three-dimensional position information from the three-dimensional position input means 1, the position information reading unit 2 which has read the three-dimensional position information passes the data to the projection position graphic data change processing unit 14, and the projection position graphic The data change processing unit 14 obtains the projection position graphic data whose position has been changed from the three-dimensional position information and the data of the projection position graphic managed by the projection position graphic data management unit 11, The data of the data management unit 11 is updated.

The projected position graphic data after the position change is also transmitted from the projected position graphic data change processing unit 14 to the three-dimensional graphic data change processing unit 3, and the three-dimensional graphic data change processing unit 3 Solid figure data management unit 4
The three-dimensional figure data is calculated by moving the three-dimensional figure in the horizontal direction and calculating the three-dimensional figure data when the three-dimensional figure is positioned directly above the changed projected position figure from the three-dimensional figure data managed in 4 is updated.

The positional relationship processing unit 6 selects the center point of the projected position figure and the three-dimensional figure from the updated three-dimensional figure data, projected position figure data and reference figure data managed by the reference figure data management unit 5. In search of the prescribed points,
The relation presentation graphic data management unit 10 is notified.

The relationship presentation graphic data management unit 10 updates the straight line connecting the center position of the moved projected position graphic transmitted from the positional relation processing unit 6 and one point of the three-dimensional graphic as a new relation presentation graphic.

The display processing unit 8 displays the moved projection position figure, three-dimensional figure, and relation presentation figure on the display unit 9 based on the updated data.

As described above, when the position of the three-dimensional figure is controlled by moving the projection position figure, the operation of positioning the three-dimensional figure right above a specific portion of the reference figure becomes easy.

(Fifth Embodiment) In the three-dimensional graphic processing apparatus of the fifth embodiment, as shown in FIG. 8, the projection position graphic 25 is designated by using the instruction input means 38, and then the position of the operation device 21 is changed. Is changed three-dimensionally (a), the projection position graphic 25 moves, and at the same time, the three-dimensional graphic 23 moves directly above the projection position graphic 25 while keeping the length of the relation presentation graphic 24 constant ( b).

Accordingly, even when the state changes from (a) to (b), the three-dimensional graphic 23, the projected position graphic 25, and the relation presentation graphic 24 do not change.

This apparatus, as shown in FIG. 9, has a relation presenting graphic constraint processing unit for restricting the length of the relation presenting graphic to a fixed length.
It has fifteen. In other respects, there is no difference from the device of the fourth embodiment (FIG. 7).

In this apparatus, when the operator designates the projection position graphic by the instruction input means 12, the instruction information reading unit 13 reads the designation and informs the instruction information reading unit 13 of the fact to the projection position graphic data change processing unit 14, and the projection position graphic The graphic data change processing unit 14
The process of changing the projection position graphic data is adopted.

Subsequently, when the operator inputs three-dimensional position information from the three-dimensional position input means 1, the position information reading unit 2 which has read the three-dimensional position information transmits the data to the projection position graphic data change processing unit 14, and the projection position The graphic data change processing unit 14
Based on the dimensional position information and the projection position graphic data managed by the projection position graphic data management unit 11, the projection position graphic data whose position has been changed is obtained, and the data of the projection position graphic data management unit 11 is updated. I do.

The projected position graphic data after the position change is also transmitted from the projected position graphic data change processing unit 14 to the three-dimensional graphic data change processing unit 3, and the three-dimensional graphic data change processing unit 3 Based on the data of the three-dimensional figure managed by the three-dimensional figure data management unit 4 and the information on the fixed length of the relation presenting figure provided from the relation presenting figure restriction processing unit 15, the three-dimensional figure data after the movement is calculated. Then, the data of the three-dimensional graphic data management unit 4 is updated.

The positional relationship processing unit 6 and the relationship presentation graphic data management unit 10 operate in the same manner as the device of the fourth embodiment.
The relation presenting graphic data stored in the relation presenting graphic data management unit 10 is updated.

Then, based on each updated data,
The three-dimensional figure after movement, the relation presentation figure, and the projection position figure are displayed by the display means 9.

As described above, by controlling the length of the relation presenting graphic to be constant, the operation of moving the three-dimensional graphic at a certain distance from the reference graphic can be easily executed.

(Sixth Embodiment) A three-dimensional graphic processing apparatus according to a sixth embodiment uses a graphic capable of representing a direction as a projection position graphic 33 as shown in FIG. When the projection position graphic 33 is moved, the projection position graphic 33 is oriented in the moving direction (FIG. 10B).

This device has the same configuration as the device of the fourth embodiment (FIG. 7), and the operator sets the position of the operation device 21 by three.
When the three-dimensional position information is changed, the projection position graphic data change processing unit 14 to which the three-dimensional position information is input calculates the position and orientation of the moved projection position graphic 16 in accordance with the movement of the operation device.

As described above, by displaying the direction of the change in the position of the three-dimensional figure on the projection position figure, the operator can easily visually recognize the change in the position of the three-dimensional figure in the virtual three-dimensional space. Becomes

(Seventh Embodiment) In the three-dimensional graphic processing apparatus of the seventh embodiment, as shown in FIG. When the position of 21 is changed three-dimensionally (a), the projection position graphic 33 moves only in a restricted fixed direction, and accordingly, the three-dimensional figure 23 changes its position in the virtual three-dimensional space (b). Therefore, the three-dimensional figure 23 is
It is possible to move only in the direction restricted.

As shown in FIG. 12, this apparatus includes a projection position graphic constraint processing unit 16 for restricting the moving direction of the projection position graphic. Other configurations are the same as those of the fifth embodiment (FIG. 9).

In this apparatus, when the operator designates the projection position graphic by the instruction input means 12, the fact is transmitted to the projection position graphic data change processing unit 14 through the instruction information reading unit 13, and the projection position graphic data change processing unit Reference numeral 14 changes the position of the projection position graphic based on the three-dimensional position data read by the position information reading unit 2 and the instruction of the projection position graphic restriction processing unit 16.

As described above, by restricting the movement direction of the projection position figure and thereby restricting the movement direction of the three-dimensional figure, the operation of accurately moving the three-dimensional figure in a specific direction in the virtual three-dimensional space can be easily executed. it can.

(Eighth Embodiment) In the three-dimensional graphic processing apparatus according to the eighth embodiment, as shown in FIG. 13, when the operator changes the position of the operation device 21 three-dimensionally (a), it is interlocked therewith. Then, the projection position graphic 25 changes its position in the virtual three-dimensional space. However, when the position of the projection position graphic 25 contacts the boundary of the reference graphic 22, the projection position graphic 25 cannot move beyond the boundary ( b).

This apparatus has the same configuration as the apparatus of the fourth embodiment (FIG. 7) except that the projection position graphic data change processing unit 14 It serves to limit the movement range of the graphic 25 to within the range of the reference graphic. Therefore, the moving range of the three-dimensional figure calculated by the three-dimensional figure data change processing unit 4 does not exceed the range of the reference figure.

As described above, by restricting the moving range of the projection position graphic within the range of the reference graphic, the operator can accurately and easily grasp the range of change of the three-dimensional graphic in the virtual three-dimensional space. .

Ninth Embodiment A three-dimensional graphic processing apparatus according to a ninth embodiment, as shown in FIG. 14, corresponds to a plurality of three-dimensional figures 23 and 40 on a screen and a plurality of reference figures 22 and 39. Is displayed. When the operator changes the position of the operation device 21 three-dimensionally, the projection position figures 25 and 42 change their positions on the determined reference figure in conjunction therewith. The figure is limited to the range of the reference figure in which the figure exists. When the projection position graphic 25 moving on the lower reference graphic 22 moves to a position hidden by the upper reference graphic 39, the projection position graphic 25 is displayed by a dotted line.

As described above, for each of the plurality of three-dimensional figures, the movement range is indicated by using each reference figure, so that the operator can accurately and easily determine the deformation range of each three-dimensional figure in the virtual three-dimensional space. It becomes possible to grasp.

(Tenth Embodiment) In the three-dimensional graphic processing apparatus of the tenth embodiment, as shown in FIG. 15, the projection position graphic 25 is changed from one reference graphic 22 to the other reference graphic 39 according to an instruction from the operator. You can transfer to

In this apparatus, the operator issues an instruction to change the reference graphic by the instruction input means 38 and then operates the operation device 21.
Is three-dimensionally changed, the projection position graphic 25 changes its position in the virtual three-dimensional space in conjunction with it (FIG. 15 (a)). If it interferes with 39 or the projection position graphic 25 is out of the range of the reference graphic 22 where it is currently placed (provided that another reference graphic 39 exists in the vertical direction), the projection position graphic 25 Moves to another reference pattern 39 (FIG. 15).
(B)).

As shown in FIG. 16, the three-dimensional graphic processing apparatus includes a reference graphic selection processing section 17 for selecting a reference graphic. The other configuration is the same as that of the device of the fourth embodiment (FIG. 7).
There is no change.

In this apparatus, when the operator instructs to change the reference graphic by the instruction input means 12, the effect is transmitted to the reference graphic selection processing unit 17 through the instruction information reading unit 13, and the reference graphic selection processing unit 17 The reference graphic is changed based on data input from the three-dimensional position input means 1 and read by the position information reading unit 2.

As described above, by defining the moving range of the three-dimensional figure variously using the plurality of reference figures, the operator can accurately and easily grasp the range of the change of the three-dimensional figure in the virtual three-dimensional space. Becomes possible.

[0091]

As is apparent from the above description of the embodiment, the three-dimensional graphic processing apparatus of the present invention can continuously change the position of the three-dimensional graphic on the screen without delaying the operation of the operator. Can be displayed. Further, since the projection position graphic and the relation presentation graphic are displayed as auxiliary graphics, the position of the three-dimensional graphic in the three-dimensional space can be easily grasped.

Further, the three-dimensional figure can be moved by moving the projection position figure, the three-dimensional figure can be moved while keeping a fixed distance from the reference figure, and the moving direction of the three-dimensional figure can be designated. Therefore, it is possible to accurately move the three-dimensional figure to a desired position in the three-dimensional space.

Further, the moving direction of the three-dimensional figure can be displayed by the projected position figure, and the operator can easily grasp the change in the position of the three-dimensional figure in the virtual three-dimensional space easily.

Further, the three-dimensional figure is moved to an accurate position in the three-dimensional space by restricting the moving range of the three-dimensional figure within the range of the reference figure, or by defining the moving range by a plurality of reference figures. It is possible to correctly grasp the moving situation.

[Brief description of the drawings]

FIG. 1 is a view showing a graphic movement operation and a screen change by a three-dimensional graphic processing apparatus of a first embodiment;

FIG. 2 is a block diagram showing a configuration of the three-dimensional graphic processing apparatus according to the first embodiment;

FIG. 3 is a perspective view showing the overall configuration of the three-dimensional graphic processing apparatus according to the first embodiment;

FIG. 4 is an explanatory diagram showing a relationship among a three-dimensional figure, a projection position figure, and a relation presenting figure according to the second embodiment;

FIG. 5 is a diagram showing types of projection position figures in a third embodiment;

FIG. 6 is a diagram showing a graphic movement operation and a screen change by the three-dimensional graphic processing apparatus of the fourth embodiment;

FIG. 7 is a block diagram showing a configuration of a three-dimensional graphic processing apparatus according to a fourth embodiment;

FIG. 8 is a diagram showing a figure moving operation and a screen change by the three-dimensional figure processing apparatus of the fifth embodiment;

FIG. 9 is a block diagram illustrating a configuration of a three-dimensional graphic processing apparatus according to a fifth embodiment;

FIG. 10 is a diagram showing a graphic movement operation and a screen change by the three-dimensional graphic processing apparatus of the sixth embodiment;

FIG. 11 is a diagram showing a graphic movement operation and a screen change by the three-dimensional graphic processing apparatus of the seventh embodiment;

FIG. 12 is a block diagram illustrating a configuration of a three-dimensional graphic processing apparatus according to a seventh embodiment;

FIG. 13 is a diagram showing a graphic movement operation and a screen change by the three-dimensional graphic processing apparatus of the eighth embodiment;

FIG. 14 is a view showing a graphic movement operation and a screen change by the three-dimensional graphic processing apparatus of the ninth embodiment;

FIG. 15 is a diagram showing a graphic movement operation and a screen change by the graphic processing device of the tenth embodiment;

FIG. 16 is a block diagram showing a configuration of a three-dimensional graphic processing apparatus according to a tenth embodiment;

FIG. 17 is a diagram showing a figure moving operation and a screen change by a conventional three-dimensional figure processing apparatus;

FIG. 18 is a block diagram showing a configuration of a conventional three-dimensional graphic processing apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 3D position input means 2 Position information reading part 3 Solid figure data change processing part 4 Solid figure data management part 5 Reference figure data management part 6 Position relation processing part 7 Shadow generation part 8 Display processing part 9 Display means 10 Relation presenting figure Data management unit 11 Projection position graphic data management unit 12 Instruction input means 13 Instruction information reading unit 14 Projection position graphic data change processing unit 15 Relation presentation graphic restriction processing unit 16 Projection position graphic restriction processing unit 17 Reference graphic selection processing unit 20 Display screen 21 Operating device 22, 39 Reference figure 23, 40 3D figure 24, 41 Relationship presentation figure 25, 32 to 37, 42 Projection position figure 26 Operator 27 Position origin 28 3D digitizer 29 Screen processing workstation 30, 31 3D figure Vertex 38 instruction input means 43 shadow

────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masataka Sugiura 1006 Kazuma Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP-A-5-67192 (JP, A) (58) Field (Int.Cl. ⁷ , DB name) G06T 17/40 G06F 17/50

Claims (13)

(57) [Claims] 1. A three-dimensional graphic processing apparatus for moving a position of a three-dimensional graphic displayed on a screen in a virtual three-dimensional space in response to an input operation of an operator, wherein a reference graphic indicating a reference of a position in the virtual three-dimensional space is provided. Reference graphic data editing means for editing the graphic data of the above, projection position graphic data editing means for editing the graphic data for displaying the projection position of the three-dimensional graphic projected on the reference graphic, and projection position graphic for displaying the projection position A three-dimensional figure processing device, comprising: a relation presenting figure data editing unit that edits graphic data of a relation presenting figure that displays the correspondence between the three-dimensional figure and the three-dimensional figure. 2. The relation-presenting graphic data editor according to claim 1, wherein the relation-presenting graphic data editing means represents the relation-presenting graphic by a line connecting a predetermined point of the three-dimensional graphic and one point of the projection position graphic. 3D graphic processing device. 3. The three-dimensional graphic processing apparatus according to claim 1, wherein the projection position graphic data editing means represents the projection position graphic by a graphic having a simple shape independent of the shape of the three-dimensional graphic. . 4. The three-dimensional graphic processing apparatus according to claim 3, wherein a graphic whose direction can be displayed is used as said simple graphic. 5. The projection position graphic data editing means and the relation presenting graphic data editing means edit a moving position of the projection position graphic or the relation presenting graphic according to the movement of the three-dimensional graphic. Item 3. The three-dimensional graphic processing apparatus according to any one of Items 1 to 4. 6. The projection position graphic data editing means edits a movement position of the projection position graphic according to an input operation of an operator, and a three-dimensional graphic is moved according to the movement of the projection position graphic. 5. The three-dimensional graphic processing apparatus according to claim 1, wherein: 7. The three-dimensional graphic processing apparatus according to claim 6, further comprising a restricting means for restricting a length of the relation presentation graphic from the projection position graphic to the three-dimensional graphic at a constant value. 8. The projection position graphic data editing unit edits the projection position graphic so that the direction of the projection position graphic coincides with the moving direction of the projection position graphic. A three-dimensional graphic processing apparatus according to claim 1. 9. The three-dimensional graphic processing apparatus according to claim 8, further comprising a restricting means for restricting a direction of the projection position graphic in a fixed direction. 10. The three-dimensional graphic processing apparatus according to claim 1, further comprising a restricting means for restricting a moving range of the projected presentation graphic on the reference graphic. 11. The three-dimensional graphic processing apparatus according to claim 1, wherein said reference graphic data editing means edits graphic data for displaying a plurality of standard graphics. 12. The method according to claim 1, wherein each of the plurality of reference figures restricts a moving range of a separate three-dimensional figure.
3. The three-dimensional graphic processing apparatus according to 1. 13. The three-dimensional graphic processing apparatus according to claim 11, further comprising a selecting unit for selecting a reference graphic for restricting a moving range of the three-dimensional graphic from the plurality of standard graphics.