JPH05307615A - Processing method for displaying three-dimensional shape - Google Patents

Abstract

PURPOSE:To rapidly display a three-dimensional shape at real time and to correctly redisplay a three-dimensional shape by reforming the shape of face data in full face data, executing three-dimensional shape operation and redisplaying the operated result when input data exert influence upon another three-dimensional shape, and when the data extert no influence, computing only the face data of the input data and redisplaying the comuted result. CONSTITUTION:When face data inputted by a data input part 1 exert influence upon full face data, a three-dimensional shape operation part 4 forms two-dimensional projection data from full face data shape-reformed by a full face data shape reforming part 3, clears a three-dimensional display and displays the two-dimensional projection data. When the inputted face data exert no influence, two-dimensional data projected from the face data are formed and displayed so as to be superposed to the three-dimensional display.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a three-dimensional shape display processing method for displaying a three-dimensional shape.

[0002]

2. Description of the Related Art Conventionally, when displaying a three-dimensional shape, FIG.
As shown in (a) of (3), after recreating the shapes of all the registered surface data (), the three-dimensional shapes of all the surface data are calculated and generated (), and the three-dimensional shape display layer All display data is deleted (), the three-dimensional shape is displayed (), or as shown in FIG. 7B, the three-dimensional shape calculation is performed only on the surface data of the input data (), The three-dimensional shape is overwritten and displayed () is fixedly selected.

[0003]

When a three-dimensional shape is calculated from all the surface data shown in FIG. 7A and re-displayed, when the number of surface data to be calculated increases, the surface data becomes large. It takes a lot of time to process the shape re-creation and the three-dimensional shape calculation, so that it cannot be quickly redisplayed. Especially, in order to display the three-dimensional shape in real time every time data is input,
There was a problem of being unsuitable.

Further, when only the surface data of the latter input data of FIG. 7B described above is calculated and displayed by the three-dimensional shape, it can be redisplayed quickly. However, when the input data has an influence on the three-dimensional shape of the existing data, there is a problem that a mismatch with the three-dimensional shape of the existing data occurs.

The present invention solves these problems.
When the input data affects other 3D shapes, the surface data shape of the entire surface data is recreated and the 3D shape calculation is performed and redisplayed. On the other hand, when the input data does not affect, only the surface data of the input data is calculated. The purpose is to display the three-dimensional shape at high speed in real time, and to re-display the three-dimensional shape correctly.

[0006]

FIG. 1 shows a block diagram of the principle of the present invention. In FIG. 1, full-surface data shape re-creation 3 is for re-creating the shape of full-surface data that has an effect on the input surface data.

The whole surface data three-dimensional shape calculation 4 is to calculate the projected two-dimensional data based on the whole surface data on which the shape is recreated. The three-dimensional shape display 6 displays a three-dimensional shape.

[0008]

According to the present invention, as shown in FIG. 1, the whole surface data three-dimensional shape calculation 4 is performed on the whole surface data regenerated by the whole surface data shape recreating 3 when the input surface data affects the whole surface data. Generates projected 2D data and 3
After clearing the three-dimensional display, the three-dimensional shape display 6 displays the two-dimensional data and the three-dimensional shape.
On the other hand, when the input surface data does not affect the entire surface data, two-dimensional data projected for the surface data is generated, and the three-dimensional shape display 6 is displayed by being superimposed on the three-dimensional display.
A three-dimensional shape is displayed.

At this time, whether or not the input surface data affects the entire surface data is instructed when the surface data is created. Therefore, when the input data influences other 3D shapes, the surface data shape of the whole surface data is recreated and the 3D shape calculation is performed and redisplayed. On the other hand, when the input data does not affect, only the surface data of the input data is obtained. By calculating and re-displaying, the three-dimensional shape can be displayed at high speed in real time, and the three-dimensional shape can be correctly re-displayed.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the configuration and operation of an embodiment of the present invention will be described in detail with reference to FIGS.

FIG. 1 shows a block diagram of the principle of the present invention.
In FIG. 1, a data input 1 is input of surface data of a three-dimensional shape to be displayed, for example, as shown in FIG.
It is the input of surface data forming a three-dimensional shape like the roof data of (a-1). This surface data is composed of a plurality of element sets (see FIGS. 2 and 3 described later).

The three-dimensional shape calculation switch 2 determines whether or not the surface data of the data input 1 influences other surface data, and when it influences, the entire surface data shape is recreated 3, the entire surface data three-dimensional shape. The projected 4D of the 3D shape is displayed by the 3D shape display 6 via the calculation 4 and the 3D shape display layer initialization 5, or the surface data of the data input affects the other surface data. When not given, only the surface data is superimposed on the surface data by the three-dimensional shape display 6 via the input surface data three-dimensional shape calculation 7 and displayed three-dimensionally or switched.

In the whole surface data shape re-creation 3, since it is found that the input surface data influences the whole surface data, the shape re-creation of the whole surface data having an influence on this surface data is performed.

The whole surface data three-dimensional shape calculation 4 is to calculate projected two-dimensional data for the whole surface data reshaped by the whole surface data shape recreating 3.
The three-dimensional shape display layer initialization 5 is to clear and initialize the three-dimensional shape display.

After the display of the three-dimensional shape is cleared, the three-dimensional shape display 6 is set to 3 by the whole surface data three-dimensional shape calculation 4.
You can display a two-dimensional shape that is a projected three-dimensional shape on the screen,
Alternatively, the projected two-dimensional shape obtained by the input surface data three-dimensional shape calculation 7 is superimposed and displayed on the screen (see FIGS. 2, 3, 4, and 5).

The input surface data three-dimensional shape calculation 7 is for generating a projected two-dimensional shape for the surface data when the input surface data does not affect the entire surface data.

Next, a specific example will be described with reference to FIGS. 2 and 3. FIG. 2 is a diagram illustrating a specific example of the present invention.
This is a specific example of displaying the three-dimensional shape when the roof data is input while the wall data that forms the house is input and registered. The following is a sequential description.

(1) As shown in (b-1), the element sets 2-1 2-2, 2-3, 2-4 which form the wall data.
Is input and registered, and the wall is displayed as a three-dimensional shape as illustrated.

(2) With the wall data of (1) displayed as a three-dimensional shape, as shown in (a-1),
The element sets 1-1 and 1-2 that form the roof data are input and registered.

(3) In the element sets 1-1 and 1-2 of the roof data registered in (2), the three-dimensional shape calculation switch 2 is replaced with other surface data (here, wall data) in (a-2). It is judged that it has an effect, and the shape is recreated for the entire data,
Determine to perform the calculation. In response to this determination, (a
In 3), the whole surface data shape re-creation 3 is performed on each of the element sets 2-1, 2-2-2-3, 2-4 of the wall data to the element sets 1-1, 1-2 of the input roof data. The three-dimensional shape is recreated by extending the wall surface until it touches (a-
In 4), the whole surface data three-dimensional shape calculation 4 was recreated 3
Generate two-dimensional data by projecting a three-dimensional shape, and (a-5)
Then, the 3D shape display layer initialization 5 clears and erases the 3D shape (here, the 3D shape shown in (b-1) of the wall) displayed on the screen, and the 3D shape is displayed in (a-6). The shape display 6 displays the projected two-dimensional data created in (a-4) as a three-dimensional shape on the screen as shown in (b-3). Here, (b-2) is these (a-3) and (a-
4), (a-5), and (a-6).

From the above, as shown in (b-1),
Wall data (element set 2-1, 2-2, 2-3, 2-4)
Is input and the three-dimensional shape is displayed on the screen, as shown in (a-1), when roof data (element set 1-1, 1-2) is input, the roof Since the data affects the other whole data (wall data),
By (a-3) recreating the entire surface data shape, (a-4) calculating the entire surface data three-dimensional shape, (a-5) initializing the three-dimensional shape display layer, and (a-6) displaying the three-dimensional shape, ( b-
As shown in 3), the three-dimensional shape is displayed (detailed processing will be described later with reference to FIGS. 4 and 5). As a result, when the whole data is affected like roof data, the whole surface data shape is recreated 2, the whole surface data three-dimensional shape calculation 4, the three-dimensional shape display layer initialization 5, and the three-dimensional shape display 6 are performed accurately. Display a three-dimensional shape. on the other hand,
In the case of the fittings data of FIG. 3 which will be described later, since it does not affect other whole surface data, only the fittings data is created into the two-dimensional data projected by the input surface data three-dimensional shape calculation 7,
It is possible to superimpose and display the three-dimensional shape on the screen, and to perform the three-dimensional display at high speed.

FIG. 3 shows an example of the overwriting of the present invention. This is because the fitting data does not affect other whole surface data, and the fitting data is subjected to the three-dimensional shape calculation and displayed in the three-dimensional shape. Here, with respect to the fitting data, a command (for example, FIG.
Pattern command). The following is a sequential description.

(1) As shown in (b-1), the element sets 2-1 and 2-2, 2-3 and 2-4 which compose the wall data.
Has already been input and registered, and the wall is displayed as a three-dimensional shape as illustrated.

(2) With the wall data of (1) displayed as a three-dimensional shape, as shown in (a-1),
The element set 3-1 that constitutes the fittings data is input and registered. (3) Element set 3-1 of joinery data registered in (2)
Judges that the three-dimensional shape calculation switch 2 does not affect other surface data (here, wall data) in (a-2), and the input surface data three-dimensional shape calculation 7 is the fitting in (a-3). Two-dimensional data projected on the data (element set 3-1) is generated, and the three-dimensional shape display 6 is (a-
The projected two-dimensional data created in 3) is overwritten as a three-dimensional shape on the screen as shown in (b-2).

From the above, as shown in (b-1),
Wall data (element set 2-1, 2-2, 2-3, 2-4)
Is input and the three-dimensional shape is displayed on the screen, as shown in (a-1), when fitting data (element set 3-1) is input, the fitting data is Since it does not affect the entire data (wall data), (a-
By the input surface data 3D shape calculation of 3) and (a-4) 3D shape display, the 3D shape is displayed as shown in (b-2). , Which will be described later with reference to FIG. 5). As a result, like joiner data,
When there is no influence on the entire surface data, the input surface data three-dimensional shape calculation 7 and the three-dimensional shape display 6 display the three-dimensional shape at high speed.

Next, the operation of the configuration of the present invention will be described in detail with reference to FIGS. 4 and 5. Here, regarding the surface data of the house used in FIGS. 2 and 3, surface data that affects the entire surface data: roof data, wall data Surface data that does not affect the entire surface data: joinery data. Designate by inputting the illustrated pattern command that the surface data does not affect the entire surface data. (In fact, the surface data that does not affect the entire surface data is temporarily stored in the master file and then extracted and registered. When the pattern command is added). The following is a sequential description.

In FIG. 4, S1 creates an element set. In S2, the element set created in S1 is registered. These S1 and S2 are, for example, as described on the right side, a process of registering face data that affects other whole face data, and include roof command-data (roof data (roof data (element set 1-1,
1-2)) Wall command-data (wall data (element set 2-1, 2-
2, 2-3, 2-4)), and the created data is registered. By this registration, as described in the lower right, roof data (element set 1): element set 1-1, element set 1-2 wall data (element set 2): element set 2-1, element set 2
-2, element set 2-3, element set 2-4). Each of these element sets is (a-
It has data such as the roof data of 1) and the wall data of (b-1) of FIG.

Similarly, S3 creates an element set. S
4 registers the element set created in S3. These S
3 and S4 are, for example, as described on the left side, a process of registering face data that does not affect other whole face data, and includes pattern command-data (joint data (element set 3-element set 3-
1, 3-2)), and the created data is registered. By this registration, as described in the lower left, the pattern data (element set 3): element set 3-1 and element set 3-2 are registered. Each of these element sets is (a-
It has surface data like the fitting data in 1).

As described above, roof data (element sets 1-1 and 1-2) is used as surface data that affects the entire surface data.
And wall data (element set 2-1, 2-2, 2-3, 2
-4) is registered, and pattern data (joint tool data (element set 3
-1, 3-2)) is registered.

Next, regarding the surface data registered in FIG. 4, 3
The processing for displaying dimensions will be described. In FIG. 5, S
11 determines whether the data type has an influence. This determines whether the input surface data is of a type that affects the entire surface data. If YES, the whole surface data shape is recreated 3, the whole surface data three-dimensional shape calculation 4, the three-dimensional shape display layer initialization 5, and the three-dimensional shape display 6 are performed to accurately display the three-dimensional shape through S12 to S25. .. on the other hand,
In the case of NO, since it was found that the input surface data does not affect the entire surface data, the input surface data 3D shape calculation 7 and the 3D shape display 6 overwrite
Quickly display 3D shapes. The following is a sequential description.

In step S12, a display instruction (structure name) is given.
For example, give a display instruction outside the house. In S13, it is determined whether or not the roof data and the wall data overlap each other when viewed from above. Here, for example, in the wall data of (b-1) of FIG.
Since it is going to display the three-dimensional shape of the roof data of (a-1) of FIG. 2, the element set 2-1 of these wall data,
2-2, 2-3, 2-4, and element set 1-of roof data
As shown in the drawing, the parts 1 and 1-2 are extended perpendicularly to the wall until they hit the roof, and a three-dimensional shape is recreated.

S14 and S15 are 2-1 and 1-1, 1
For -2, extend until it hits the roof perpendicular to the wall.
That is, the element set 2-1 of the wall data (the element set 2-1 of the wall data of (b-1) in FIG. 2) is vertically oriented toward the element set 1-1 and the element set 1-2 of the roof data. Extend until it hits and create a three-dimensional shape.

Similarly, S16 and S17 are 2-2, 1-1 S18, S19 are 2-3, 1-1, 1-2 S20 and S21 are 2-4 and 1-2. Extend until the wall hits the roof vertically.

In step S22, the whole surface data is updated. Through S13 to S22, the wall is extended until it hits the roof, and the original three-dimensional shape is updated by the three-dimensional shape created by the wall and the roof.

In step S23, the whole surface data three-dimensional shape is calculated. This gives a viewpoint and projects 3D data into 2D. This generates two-dimensional data projected from a given viewpoint for the three-dimensional shape represented by the whole surface data updated in S22.

In step S24, the three-dimensional shape display layer is initialized. This clears the three-dimensional shape displayed on the screen and initializes it. S25 displays a three-dimensional shape. After clearing the 3D shape on the screen in S24,
A three-dimensional shape is displayed on the screen based on the projected two-dimensional data obtained by calculation in step S23.

As described above, when the surface data affecting the entire surface data is input, the two-dimensional data projected from the given viewpoint can be accurately displayed on the screen as a three-dimensional shape.

In S31, since it is determined that the input surface data does not affect the entire surface data in NO in S11, the input data is stored. It adds to the overall face data (the previous data was deleted at this stage).

S32 is the input surface data three-dimensional shape calculation 7
2D data generated by projecting from the given viewpoint is generated with respect to the input surface data (here, fitting data in FIG. 3).

In S33, only the three-dimensional shape of this input data is overwritten. As shown in (b-2) of FIG. 3, the element set 3-1 of fitting data is overwritten on the element set 2-1 of wall data.

As described above, when the surface data that does not affect the entire surface data is input, it is possible to quickly display the two-dimensional data projected from the given viewpoint only on the input surface data on the screen. .. In addition, for example, at the time of modification other than the registration described above, the original two-dimensional data of the corresponding surface data is deleted from the screen and then overwritten and displayed (that is, deleted and registered).

FIG. 6 shows a system configuration diagram of the present invention.
In FIG. 6, the main memory 10 stores programs and data, and here stores programs as illustrated.

The main program 11 is a main program stored in the main memory 10 and is a control program such as an OS. Three-dimensional shape calculation switch module 1
Reference numeral 2 is a module (executable program) for performing the processing of the three-dimensional shape calculation switch 2 of FIG.

The whole surface data shape recreating module 13
This is a module that performs the processing of the entire surface data shape re-creation 3 in FIG. The whole surface data three-dimensional shape calculation module 14
This is a module that performs the processing of the three-dimensional shape calculation 4 of the entire surface data.

Three-dimensional shape display layer initialization module 1
Reference numeral 5 is a module for performing processing of initialization of the three-dimensional shape display layer 5. The three-dimensional shape display module 16 is a module that processes the three-dimensional shape display 6.

Input surface data three-dimensional shape calculation module 1
Reference numeral 7 is a module for performing the processing of the input surface data three-dimensional shape calculation 7. The input data storage module 18 is shown in FIG.
This is a module for performing processing of accumulating input data in S31.

The CPU 21 is a processing device, which reads a program (module) stored in the main memory 10 and performs various processes according to the program. The display (DISP) 22 displays a three-dimensional shape.

The keyboard (KB) 23 is for inputting various data and instructions. Mouse (MOUSE) 24
Is for giving various instructions on the display.

[0049]

As described above, according to the present invention,
When the input data affects other 3D shapes, the shape of the entire surface data is recreated and the 3D shape is calculated and displayed again. On the other hand, when it does not affect the calculation, only the surface data of the input data is calculated. Since the configuration for re-displaying the three-dimensional shape is adopted, the three-dimensional shape can be displayed in real time at high speed and the three-dimensional shape can be correctly re-displayed.

[Brief description of drawings]

FIG. 1 is a principle block diagram of the present invention.

FIG. 2 is a diagram illustrating a specific example of the present invention.

FIG. 3 is an example of overwriting of the present invention.

FIG. 4 is a flowchart explaining the operation of the present invention.

FIG. 5 is a flowchart explaining the operation of the present invention.

FIG. 6 is a system configuration diagram of the present invention.

FIG. 7 is an explanatory diagram of a conventional technique.

[Explanation of symbols]

 1: Data input 2: 3D shape calculation switch 3: Recreate entire surface data shape 4: Complete surface data 3D shape calculation 5: 3D shape display layer initialization 6: 3D shape display 7: Input surface data 3D shape calculation

Claims (2)

[Claims] 1. In a three-dimensional shape display processing method for displaying a three-dimensional shape, full-surface data shape re-creation (3) for re-creating the shape of full-surface data that affects input surface data, and this shape re-creation. Projected based on the entire surface data
Three-dimensional shape calculation (4)
And the two-dimensional data projected by the three-dimensional shape calculation (4) for the whole-surface data regenerated by the whole-surface data shape re-creation (3) when the input surface data influences the whole-surface data. Generate and display the two-dimensional data by clearing the three-dimensional display. On the other hand, when the input surface data does not affect the entire surface data, generate the projected two-dimensional data for the surface data and display the three-dimensional display. A three-dimensional shape display processing method, characterized in that the three-dimensional shape display processing is configured to be displayed in an overlapping manner. 2. The three-dimensional shape display processing method according to claim 1, wherein it is instructed whether or not the input surface data affects the entire surface data when the surface data is created.