JPS6398778A - Modeling method for 3-dimensional pattern - Google Patents

Abstract

PURPOSE:To reduce the scale of a pattern modeling function and to shorten the arithmetic time by separating a geometrical calculation function which calculates and the intersecting lines and points between patterns needed for the pattern modeling function from an automatic recognizing function for form patterns. CONSTITUTION:The input 60 is carried out for the phase data of a final pattern and the data conflict check 63 is performed. The normal data is preserved and the abnormal data undergoes the error processing 65 for input of the next phase data. When input of said phase data is through, an indication for geometrical calculation is supplied to perform the data conflict check 73. The error processing 75 is carried out with the abnormal data and the indication data is supplied for the next calculation. While the intersecting line/point calculation 77 is carried out with the normal data. Then the stored 68 phase data is synthesized with the pattern data. The contents of indications for geometric calculation are all decided automatically by the stored 68 phase data.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a three-dimensional graphic processing system for deforming a figure,
The present invention relates to an apparatus for processing, and in particular to a method capable of independently operating figure phase data processing and geometric data processing.

[Conventional technology]

The conventional device was developed by Professor Okino of Hokkaido University in ``Automatic Design Methodology''; as exemplified at Yokendo in July 1912, phase data processing and geometric data processing are performed in the same device at the same time.

[Problem that the invention seeks to solve]

Conventional three-dimensional figure modeling devices generate a jig and tool figure in advance to generate the final shape of the figure to be modeled, and perform this figure modeling by performing set calculations on the jig and tool figure and the figure to be modeled. The device uses an automatic pattern recognition mechanism that examines all relationships between these two shapes to determine the final shape, and a correlation calculation mechanism between all graphic elements within the two shapes to determine the final shape and dimensions. ing. In this case, the automatic pattern recognition mechanism required a very complicated process, the correlation calculation mechanism required a very large amount of processing, the modeling device was large-scale, and the time involved in the modeling process was also very large.

Figure 2 shows an example of modeling using a conventional modeling device.
When modeling as shown in Figure 2 (C), after creating jig and tool figure 2 and setting the positions of figure 1 and figure 2, the common parts of figure 2 and figure 1 are removed from figure 1. Perform the removal process.

At this time, in the modeling device, the mutual relationship between figure 1 and figure 2 is determined whether figure 1 completely includes figure 2 as shown in Fig. 2 (D), inscribed inclusion in Fig. 2 (E), or F) Intersection, Fig. 2 (G) circumscription, and Fig. 2 (H) are all checked, and if there is an intersecting/inclusive relationship, calculations are made for their interrelations.

SUMMARY OF THE INVENTION An object of the present invention is to provide a three-dimensional graphic modeling device that can simplify the automatic pattern recognition device, downsize the graphic modeling device, and shorten processing time.

[Means for solving problems]

Figure 3 shows the mechanical configuration of the figure modeling device according to the present invention.The machine end is equipped with a geometric calculation function that calculates mutual lines and intersections between figures necessary for the figure modeling function, and an automatic recognition function of shape patterns. The former was made to correspond to the geometric calculation processing mechanism 20, and the latter was made to correspond to the processed figure phase data storage device 30.

At this time, the method of recognizing the shape pattern after processing is such that automatic recognition is not performed, but the shape pattern is inputted by the device user through the graphic input unit 10 and stored in the shape pattern storage device 30 in advance. That is, the shape pattern is determined in advance by the user of the device and stored. Furthermore, the geometric calculation process 13 and the phase data input process 16 are completely independent from each other in terms of functionality and processing timing.

[Effect]

FIG. 4 shows how the graphical modeling mechanism shown in FIG. 3 operates according to instructions from the user of the device.

First, the phase data of the final figure is input 60, the input data is checked for data inconsistency 63, and normal data is saved 68.
, error processing 65 is performed for abnormal data, input of next phase data and repeated 0 phase data input is completed, next input cuff 0 of geometric calculation instruction is performed and data contradiction check 73
For abnormal data, an error process 75 is performed to input the next calculation instruction data, and for normal data, the phase data stored in the intersection and intersection calculations 77 and the previous 68 are synthesized 79 into the graphic data. Here, all of the contents of the geometric calculation instructions are automatically determined from the phase data saved in step 68.

(Embodiment) An embodiment of the present invention is shown in FIG. 1, an operation example is shown in FIG. 5, and an operation procedure is shown in FIG. 4. The input/output device 80 in FIG. This is a device that inputs data and outputs an error or - message if there is an error or contradiction in the input command content or graphic data.Input data analysis section 83 in FIG. Analyze the graphic data and evaluate the validity of the data content. If errors or contradictions are found in the data content, generate an error message and send it to the input/output device to prompt the device user to re-enter commands and graphic data. Due to the nature of the data, correct command data and graphic data are classified and organized by topological data and geometric data and stored in the main memory device 88 in FIG. It will be done.

The figure modeling device performs topological data processing and geometric data processing of the figure to be modeled according to the command contents in the main memory.The processed figure data is stored in the main memory each time the individual command processing is completed. After the instruction is executed, the graphical display command is sent to the display processing unit 85. The 0 display processing unit 85 converts the modeled graphic in the main memory 88 into a line drawing. 0 display control bag fi which sends the data to the display control device Fig. 1 90
! At 90, the line drawing data is converted into a format and size that can be expressed on the graphic display device t95, and the result is displayed on the graphic display device t95.

FIG. 5 shows one method for modeling figures using this device, and the 41st! ! shows the processing procedure at that time. An example of modeling the figure 1 shown in FIG. 5(A) into the figure shown in FIG. 5(B) will be shown.

First, as shown in FIG. 5(C), the surface element of figure l is
A) Specify whether the pattern 90 will look like after modeling processing. This designation of the pattern is called a phase data application command for a specific element of a figure, and corresponds to the phase data input 60 in FIG. In the example of FIG. 5(C), the surface element of figure 1
) 90 is divided into three surfaces 91, 92, 93 in FIG. 5(C) by edge line elements 100, 101 in FIG. 5(C). In this case, the phase data input in FIG. 460 is performed at least twice, that is, the instruction to add the edge line elements 100 and 101 in FIG. 5(C) is made. Each time instruction data is input, the data is checked for inconsistency and validity one by one.
Normal data is shown in Figure 4 68. Phase data is saved as shown in Figure 1 88.
done on main memory. After error processing for invalid data (see FIG. 4 65), a message for re-input instruction is generated.This procedure is repeated (see FIG. 4 69) until all one-phase data has been added.

Next, the surface elements of figure elements 91, 92, 93 in FIG.
01, 102, 103 (7) Give geometric data, ie, edge line equation, nine plane equations to the edge line element. The assignment method is realized only by assigning the surface equation. In the case of FIG. 5(C), the instruction to change the equation of the surface 92 from a plane to a cylinder is performed according to FIG. 4 70. After evaluating the validity of the instruction content (Figure 4), if there is a contradiction in the instruction content, error processing is performed (Figure 4).
After inputting the equation for the 0-plane 92, which prompts you to re-enter the correct data after 5, the intersection/intersection calculation process between the plane 92 and the plane 912 and the plane 92 and the plane 93 is performed.
, 102 equations, and the coordinate values of the end points are determined. Similarly, the coordinate values of the angle and edge of the ridge lines 102 and 103 are determined by the mutual intersection/intersection calculation process between the plane 92 and the plane 95 and between the plane 92 and the plane 96 in FIG. 5(C). The geometric data and topological data obtained in this manner are synthesized (FIG. 4, 79) to generate figure shape data after modeling, which is stored in the main storage device, FIG. 1, 88. Geometric calculation instructions The repetition of the phase data synthesis process of FIG. 4 70 to FIG. 4 79 is based on the data input in FIG. 4 60.

Automatically determined by the number.

In this way, the modeling results are displayed on the graphic display device 95 in FIG. 1 via the display processing section 85 in FIG. 1 and the display control device 90 in FIG. 1. The device user re-models any missing parts according to the displayed results.

Provide additional modeling instructions.

〔Effect of the invention〕

According to the present invention, it is possible to downsize the graphic modeling mechanism and significantly reduce the calculation processing time.

[Brief explanation of the drawing]

FIG. 1 shows the overall configuration of a graphic modeling device and the data flow between each mechanism and device, and FIG. 2 shows an example of a modeling method using a conventional modeling device. FIG. 3 shows the mechanical configuration of the graphic modeling device according to the present invention. FIG. 4 is an example in which a graphic modeling operation is applied to this device. FIG. 5 shows an example of a method for modeling figures using this device. 1... Entire figure, 91... Plane element which is one of the elements constituting figure 1, 92, 93, 95, 96... Plane element which is one of the elements constituting figure 1, 100 ...edge element, 101.1, which is one of the elements constituting figure 1
02...A ridge line element that is one of the elements constituting the figure 1.

Claims (1)

[Claims] 1. In a three-dimensional figure modeling device, the figure topological data processing section and the geometric data processing section are completely separated and made independent.
A three-dimensional figure modeling method in which each of them can be used at any time and the device user can specify the shape pattern of the generated figure in the "topological data processing section".