JP3148489B2 - 3D object placement device - 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 object for arranging a target three-dimensional figure at an arbitrary position in a three-dimensional space on a screen in a computer graphic system for supporting design design of buildings and machines. Regarding the object placement device,
In particular, it is configured to be operated by an intuitive and easy-to-understand procedure.

[0002]

2. Description of the Related Art Conventionally, a three-dimensional object arranging apparatus in a computer graphic system places an object at an arbitrary position in a three-dimensional space on a screen as described in, for example, Japanese Patent Application Laid-Open No. 2-129664. When arranging, it is necessary to perform an operation of designating, with a mouse or a cursor, a surface on which the three-dimensional object is in contact with the arrangement destination and a surface corresponding to the arrangement destination.

FIG. 7 shows an example of the screen. When an object 72 in an indoor space is arranged on a floor 71, an operator first contacts the floor 71 of the surface of the object 72. Side to be made
Select 73 and specify this. Next, a floor 71 on which the object 72 is to be placed is designated (FIG. 7A), and when a command to execute the placement is input, a state where the object 72 is in contact with the floor 71 is displayed on the screen. (FIG. 7 (b)). The object 72 that has once contacted the floor 71 can be placed at an arbitrary position on the floor 71 by moving while being restrained by the surface of the floor 71 as shown in FIG. 7C.

[0004]

However, in the conventional method, the operator has to specify which surface of the target object comes into contact with the placement destination in advance when the placement operation is performed. It is necessary to replace the task of arrangement with the task of specifying surfaces in the mind, which lacks intuitive operation.

[0005] When performing a complicated arrangement operation,
A series of operations of designating the surface of the object, designating the placement destination surface, and inputting the placement execution command must be repeated many times, which makes the procedure very complicated.

[0006] When the surface of the object to be brought into contact with the placement destination is small, it is difficult to directly specify the surface with a cursor or the like.

The present invention solves such a conventional problem, and does not require a complicated operation procedure, and allows an intuitive operation having a commonality with a placement operation in the real world to operate an object. It is an object of the present invention to provide a three-dimensional object arrangement device that can be arranged at an arbitrary position in a three-dimensional display space.

[0008]

Therefore, in the present invention, 3
In a three-dimensional object arrangement device for arranging an object having a three-dimensional shape at an arbitrary position in a three-dimensional display space, a contact that determines whether the object and another three-dimensional figure are in contact in the three-dimensional display space Judgment means, the object is moved in the direction of another three-dimensional figure until the contact judgment means makes a judgment of contact, and then, until the object and this other three-dimensional figure reach a stable state,
Automatic movement processing means for rotating and moving the object around the contact point, and maintaining the object in a stable state with other three-dimensional figures
Restrictions on the movement direction of the
It is provided a mobile auxiliary figure generating means for generating a movement auxiliary figure to.

[0009] In addition, the automatic movement process means the movement of the object is
Generate an automatic movement direction presentation symbol that specifies the direction to move
This automatic moving direction presentation symbol indicates the moving direction of the elephant
It is provided with automatic moving direction setting means for setting the direction.

Further, there is provided a movement assist graphic attribute setting means for setting / changing an attribute of the movement assist graphic.

[0011]

Therefore, the object in the three-dimensional display space is stably placed on the floor or the like to be laid out by the automatic movement processing means, and then its orientation and position are determined by using the movement assisting figure. The position is corrected.

When correcting the angle of the object so as to keep it parallel to the wall, a movement assisting figure having a surface parallel to the wall and moving in the normal direction of the wall is pressed against the object. By this operation, the angle of the object is changed so that one side thereof is in close contact with the surface of the movement assist graphic, and as a result, the object is parallel to the wall surface.

As described above, since the operation of the three-dimensional object placement apparatus of the present invention is similar to the operation of placing an object in the real world, the operation procedure can be intuitively grasped.
Operability is improved.

The direction in which the automatic movement processing means moves the object can be changed by the setting of the automatic movement direction setting means. Therefore, it is possible to dispose the target object on an arbitrary surface.

Further, the movement assist graphic is provided with numerical attributes by using the movement assist graphic attribute setting means, for example, by giving scales at equal intervals, or aligning a plurality of objects at equal intervals. Or the ability to Therefore, the operation of arranging the object with numerical accuracy can be performed.

[0016]

【Example】

(First Embodiment) As shown in FIG. 1, a three-dimensional object placement device according to a first embodiment of the present invention includes a three-dimensional data storage unit 11 for storing data of all three-dimensional objects in a virtual three-dimensional space.
An object designation processing unit 12 that adds an identification code to data of the object specified by the operator, a contact determination processing unit 13 that determines contact between the solids, and another An automatic movement processing unit 14 for performing parallel movement until the object comes into contact with a three-dimensional object, a movement operation processing unit 15 for performing parallel movement or rotational movement of an object, and a movement assisting figure for controlling a posture, a movement direction, and the like of an object to be arranged. A movement assist graphic generation processing unit 16 for generating, a movement assist graphic data storage unit 17 for storing movement assist graphic data, a control unit 18 for controlling each processing unit according to an input operation of an operator, a three-dimensional figure and movement A display processing unit 19 that outputs a display signal of the auxiliary figure to the display device.

The three-dimensional data storage unit 11 stores shape data, position and direction data relating to all three-dimensional objects existing in the virtual three-dimensional space, and control data added to each three-dimensional object. In accordance with the operator's instruction command from the input device transmitted through the control unit 18, the target object specification processing unit 12 adds the indicated code to the three-dimensional data of the specified three-dimensional object, and reflects it in the three-dimensional data storage unit 11. I do. The contact determination unit 13 determines the contact between the three-dimensional objects by calculating the interference between the three-dimensional data,
Check the contact between one solid and another.

Further, the automatic movement processing unit 14 processes the object to which the designated code is added by the object designation processing unit 12 in accordance with the automatic movement instruction of the operator transmitted through the control unit 18.
Until the contact determination processing unit 13 determines that it has contacted another solid, it is automatically translated in a certain direction (for example, like a dropping motion). Next, when the contact determination processing unit 13 determines that a contact has been made, the object is rotated around the contact point until it reaches a stable state. The object data updated by these movements is reflected in the three-dimensional data storage unit 11.

The movement operation processing unit 15 translates or rotates the object based on the movement operation input of the operator transmitted through the control unit 18. The parallel movement or the rotational movement of the object is performed by being restricted by a surface (hereinafter, referred to as a contact surface) contacted by the object by the movement processing of the automatic movement processing unit 14. For example, in a three-dimensional object placement device that uses a two-dimensional input device such as a mouse as an input device, the moving operation processing unit 15 is configured to interlock with the vertical and horizontal moving operation of the mouse when the parallel movement is selected. Translates the object on the contact surface, and if rotation is selected,
In conjunction with the movement operation of the mouse to the left or right, the object is rotated counterclockwise or clockwise on the contact surface with the rotation axis being the normal direction of the contact surface. Further, when the target object is moved by the moving operation process, the contact determination processing unit 13 always checks the contact state with another solid. When the object comes into contact with another solid and reaches a stable state, the movement is stopped there. The updated data of the moved object is reflected in the three-dimensional data storage unit 11.

The movement assisting figure generation processing section 16 generates a movement assisting figure for controlling the posture and the moving direction of the object in accordance with the movement assisting figure generation command input via the control section 18. The generated data of the movement assist graphic is stored in the movement assist graphic data storage unit 17.

When moving the movement assisting figure, the operator designates the movement assisting figure and performs a moving operation input. In response to this operation, the target object specification processing unit 12 performs a process of specifying a movement assisting graphic, and the movement operation processing unit 15
A process for moving the designated movement assisting figure is performed. The data of the movement assist graphic after the movement is reflected and updated in the movement assist graphic data storage unit 17.

The control unit 18 receives an input signal from an input device operated by the operator, and based on the input signal, an object designation processing unit 12, an automatic movement processing unit 14, a movement operation processing unit 15, and a movement assist graphic generation. The processing in the processing unit 16 is controlled. Also,
In the display processing unit 19, based on the data contents stored in the three-dimensional data storage unit 11 and the movement assist graphic data storage unit 17 (these data contents are sequentially updated with the movement of the three-dimensional and movement assist graphic), The display signal of the three-dimensional object and the movement assist graphic is output to the display device.

Next, a specific operation of the three-dimensional object arranging apparatus according to the first embodiment will be described with reference to a screen example shown in FIG. FIG. 2 shows a screen change until the desk 22 is arranged in parallel with the wall 23 in the virtual indoor space.
The desk 22 exists above the floor 21 as shown in FIG. As a first step, the desk 22 is moved to the automatic movement processing unit 14.
Is placed in contact with the upper surface of the floor 21 by the automatic movement process.

For this purpose, the operator first designates the desk 22 as an object to be arranged. In response to this instruction, the target object specification processing unit 12 adds a flag indicating that the instruction has been made to the data of the desk 22. Next, when the operator inputs an automatic movement processing command, the automatic movement processing unit 14 refers to the three-dimensional data storage unit 11 and moves the desk 22 to which the designated flag is added downward, as if dropping. It translates in the direction of a certain floor 21.

On the other hand, during the automatic movement processing by the automatic movement processing unit 14, the contact determination processing unit 13 constantly checks the contact state between the automatically moving object and another solid. When the desk 22 that has moved in parallel contacts the floor 21, the contact determination processing unit 13 that has identified the contact state notifies the automatic movement processing unit 14.

When the desk 22 comes into contact with the floor 21, the automatic movement processing section 14 rotates the desk 22 around the contact point based on the moment calculation until the desk 22 reaches a stable state.

With these processes, the desk 22 is stably placed in contact with a position and an orientation substantially matching the planned position on the floor 21.

In the next stage, as shown in FIG. 2B, a movement assist graphic 24 for adjusting the orientation of the desk 22 is generated. When the desk 22 is arranged parallel to the wall 23, a plane 24 (which may be a straight line or a rectangular parallelepiped) parallel to the wall 23 is generated as a movement assisting figure, and the movement direction of the desk 22 is restricted by the movement assisting figure.

In order to generate the movement assist graphic, the operator designates the wall surface 23 and inputs a movement assist graphic generation command. The movement assist graphic generation processing unit 16 to which the movement assist graphic generation command is input via the control unit 18 transmits the designated graphic (wall surface).
The data of (23) is copied to generate data of the movement assist graphic (plane 24).

The movement direction of the plane 24 of the movement assisting graphic is limited to the normal direction of the plane 24 (that is, the normal direction of the wall surface), and when a two-dimensional input device such as a mouse is used. Has a flat horizontal or vertical movement.
This is the amount of movement in the normal direction of 24. In FIG. 2B, a plane
24 shows a state where 24 has moved a small distance from the wall surface 23. The movement of the movement assisting figure is similar to the movement of the solid,
The processing is performed in the moving operation processing unit 15.

When the plane 24 is moved toward the desk 22,
As shown in FIG. 2 (c), it contacts the desk 22 at some point.
This contact determination is also performed by the contact determination processing unit 13. After touching the desk 22, even if the plane 23 is further moved in the same direction, the desk 22 rotates around the contact point until the side of the top plate of the desk 22 is in close contact with the plane 23. ,
The desk 22 rotates on the floor 21. In this way, by making the direction of the plane 23, that is, the direction of the wall surface 23 coincide with the direction of one of the side surfaces of the top plate of the desk 22, the direction of the desk 22 can be adjusted parallel to the wall 23.

Further, the desk 22 in close contact with the plane 24 is
The positional relationship with is fixed. Therefore, as shown in FIG. 2D, when the plane 23 is moved in the normal direction,
Moves together with the plane 23. Therefore, by moving the plane 23, the desk 22 can be moved to an arbitrary position on the floor 21 while keeping the desk 22 parallel to the wall surface 23. After the necessary screen operation is completed, the movement assist graphic (plane 24) is input by inputting a movement assist graphic erase command.
You can remove it from the screen.

As described above, in the three-dimensional object arranging apparatus of the first embodiment, the three-dimensional object is virtually moved by the operation common to the operation of moving the object to a desired position in the real world. The object can be arranged in a three-dimensional space, and by this operation, the object can be arranged at an arbitrary position geometrically accurately, that is, while keeping parallel or perpendicular to a certain plane correctly. Since the operation procedure has the commonality with the operation in the real world, the operator can intuitively understand the operation and can easily place the object by the correct operation.

(Second Embodiment) A three-dimensional object arranging apparatus according to a second embodiment, as shown in FIG. 3, has an automatic movement direction setting processing section 31 for setting the movement direction of an object in an automatic movement processing section 14. And an automatic movement direction data storage unit 32 for storing data relating to the automatic movement direction. Other configurations are the same as those of the first embodiment (FIG. 1).

The operation of the automatic movement direction setting processing section 31 and the automatic movement direction data storage section 32 will be described with reference to FIG.

When the operator designates the object 41, the automatic movement direction setting processing unit 31 sends an automatic movement direction presentation symbol 42 extending downward through the one point of the object 41, which is the initial setting direction.
Generate As shown in FIG. 4A, the automatic movement direction presentation symbol 42 is expressed as a three-dimensional shape indicating the direction such as an arrow, and visually indicates the automatic movement direction to the operator. When changing the automatic movement direction, the operator directly instructs the automatic movement direction presentation symbol 42 and performs an operation of rotating and moving it in a desired direction in the virtual space. The rotational movement of the automatic movement direction presentation symbol 42 is processed by the movement operation processing unit 15, similarly to the movement of other solids.

By this operation, the automatic movement direction of the object 41 is changed and set to the direction indicated by the automatic movement direction presentation symbol 42. Vector data indicating the set automatic movement direction and the shape data / position direction data of the automatic movement direction presentation symbol 42 are stored in the automatic movement direction data storage unit 32,
This content is sequentially reflected on the screen of the display device through the display processing unit 19. In the case of FIG. 4A, the arrow of the automatic movement direction presentation symbol 42 is set in the direction of the wall 43 where the object 41 is to be arranged.

After setting the automatic movement direction, the automatic movement processing described in the first embodiment is executed as shown in FIG. In this automatic movement processing, the object 41 moves in parallel in the set automatic movement direction and comes into contact with the wall 43, and at that time, the object 41 rotates and stably stops on the wall 43.

Next, as shown in FIG. 4C, a plane 44 parallel to the floor is generated as a movement assisting figure, and the direction of the object 41 and the distance from the floor are adjusted using this. I do.

As described above, in the three-dimensional object arranging apparatus of the second embodiment, by adding the automatic movement direction setting processing unit 31 and the automatic movement direction data storage unit 32, the object can be placed in the three-dimensional space. It can be placed with geometric accuracy on any surface.

(Third Embodiment) As shown in FIG. 5, the three-dimensional object arranging apparatus of the third embodiment includes a movement assist graphic attribute setting processing section 51 for setting and changing attributes of a movement assist graphic. I have. Other configurations are the same as those of the first embodiment (FIG. 1).

The attribute given to the movement assisting figure is input by the operator as a movement assisting figure attribute setting command, and the movement assisting figure attribute setting processing section 51 adds the given attribute to the movement assisting figure according to this command. The attribute data is stored in the movement assist graphic data storage unit 17.

The operation of the movement assisting figure attribute setting processing section 51 will be described with reference to FIG. In this example, the movement assist graphic attribute setting processing unit 51 sets a function of arranging a plurality of objects in contact with the movement assist graphic 63 at equal intervals.

FIG. 6A shows three objects 61a and 61 by the automatic movement processing of the automatic movement processing unit 14 shown in the first embodiment.
This shows a state in which b and 61c are already in contact with the floor 62. In order to obtain a movement assisting graphic for aligning these three objects on one straight line, the operator designates one side of the floor surface and inputs a movement assisting graphic generation command. In response, a straight line parallel to one side of the floor 63
Is generated as a movement assisting figure. The moving direction of the straight line 63 is
The direction perpendicular to this straight line on the floor.

Next, the straight line 63 is moved while being pressed against each object. By this operation, three objects 61a, 61b, 61
(c) changes the position and the posture so as to be aligned on the straight line 63 (FIG. 6 (b)).

Next, the operator inputs the movement assist graphic (straight line 6).
The three objects 61a, 61b, 61c in contact with 3) are indicated. The object specification processing unit 12 that has received the instruction adds the indicated code to the three-dimensional data of the specified object stored in the three-dimensional data storage unit 11.

On the other hand, the movement assist graphic attribute setting processing section 51
The position data of the designated target object is read with reference to the three-dimensional data storage unit 11, and a contact point between the movement assist graphic (straight line 63) and each target object is calculated based on the read position data. Then, from the contact points of the respective objects, the objects (61a and 61c) corresponding to both ends of the three objects are determined, the midpoint of these objects is obtained, and the object (61b) existing at the center is determined as the midpoint. To the position.

By such internal processing, as shown in FIG. 6C, on the screen, the distance between the object 61a and the object 61b is equal to the distance between the object 61b and the object 61c. Is changed, and the three objects are automatically arranged at equal intervals.

Although not shown in the figure, the movement assist graphic attribute setting processing unit 51 causes the movement assist graphic (straight line 6
3) You can also set an attribute to display the scale on top. In this case, by moving the object along the straight line 63 based on the scale, it is possible to perform a numerically accurate placement operation.

As described above, in the three-dimensional object arranging apparatus according to the third embodiment, it is possible to arrange the objects at numerically accurate positions by installing the movement assisting graphic attribute setting processing unit.

[0051]

As is clear from the above description of the embodiments, the three-dimensional object arrangement apparatus of the present invention can be executed in an operation procedure that allows intuitive recognition of arrangement with geometric accuracy. It is. In addition, it is possible to accurately and easily arrange an object on an arbitrary surface. Further, a plurality of objects can be numerically accurately aligned.

As described above, the highly precise arrangement operation on the object can be executed in an intuitive operation procedure without relying on a complicated operation procedure, so that the operability is remarkably improved.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a three-dimensional object placement device according to a first embodiment of the present invention;

FIG. 2 is an example of a screen showing an operation of the three-dimensional object placement device in the first embodiment;

FIG. 3 is a block diagram showing a configuration of a three-dimensional object placement device according to a second embodiment of the present invention;

FIG. 4 is an example of a screen showing the operation of the three-dimensional object placement device according to the second embodiment;

FIG. 5 is a block diagram showing a configuration of a three-dimensional object placement device according to a third embodiment of the present invention;

FIG. 6 is an example of a screen showing the operation of the three-dimensional object placement device in the third embodiment;

FIG. 7 is a screen example showing the operation of the conventional three-dimensional object placement device.

[Explanation of symbols]

 11 3D data storage unit 12 Object designation processing unit 13 Contact determination processing unit 14 Automatic movement processing unit 15 Movement operation processing unit 16 Movement assist graphic generation processing unit 17 Move assist graphic data storage unit 18 Control unit 19 Display processing unit 21, 62 , 71 floor 22 desk 23, 43 wall 24, 44, 63 movement assist graphic 31 automatic movement direction setting processing unit 32 automatic movement direction data storage unit 41, 61a, 61b, 61c, 72 object 42 automatic movement direction presentation symbol (arrow 51 Movement assist graphic attribute setting processing unit 73 Object surface to be brought into contact with the destination

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-5-181939 (JP, A) JP-A-5-181940 (JP, A) Information Processing Society of Japan, vol. 92, no. 14 (HI-41), p101-108, Tetsuya Yoshimura, et al., “3D Direct Operation Interface-Prototype for Supporting Room Layout in Virtual Space-” (58) Fields investigated (Int. Cl. ⁷ , DB name) G06F 17/50 634 G06F 17/50 626 G06T 17/40 JICST file (JOIS)

Claims (3)

(57) [Claims] 1. A three-dimensional object arranging apparatus for arranging a three-dimensional object at an arbitrary position in a three-dimensional display space, wherein the object contacts another three-dimensional figure in the three-dimensional display space. a contact determination means for determining whether to have, moving the object to the contact determining means make the determination of the contact in the direction of the other solid figures, then the object before <br/> SL other stereoisomers Until the figure reaches a stable state, the object is
And automatic movement processing means for rotational movement about the contact point, while maintaining the stable state with the other solid figure, the
Constrain the direction of movement of the object, and
Three dimensional object, characterized by comprising a movement auxiliary figure generating means for generating a movement auxiliary figure to move the object placement device. 2. A of moving the automatic moving processing means object
Generate an automatic movement direction presentation symbol that specifies the direction to move
The automatic movement direction presentation symbol indicates the movement direction of the object
2. The three-dimensional object placement device according to claim 1, further comprising an automatic movement direction setting means for setting a moving direction. 3. An attribute in the movement assist graphic is set /
The three-dimensional object placement device according to claim 1, further comprising a movement assisting graphic attribute setting unit for changing.