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Method for rapid selection of similar graphics and applied to CAD

A similar graphics and quick selection technology, applied in geometric CAD, special data processing applications, instruments, etc., can solve problems such as low efficiency and large limitations, and achieve the effect of eliminating comparison judgments, improving flexibility, and improving CAD efficiency

Inactive Publication Date: 2016-11-09
上海柏楚电子科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional CAD software generally only supports the selection of graphics of the same layer or color, which has great limitations, especially when a drawing contains multiple parts, the same parts can only be judged by manual comparison, and need to be selected one by one, which is extremely efficient low

Method used

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  • Method for rapid selection of similar graphics and applied to CAD
  • Method for rapid selection of similar graphics and applied to CAD
  • Method for rapid selection of similar graphics and applied to CAD

Examples

Experimental program
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Embodiment

[0080] Such as figure 2 Shown in the present embodiment needs to select the CAD drawing of similar figure, image 3 Be figure A and figure B in the present embodiment, wherein the figure of upper left is the figure A that needs to select similar figure, and the figure of lower right is the comparison figure figure B of selection, and wherein V1, V2, V2 ' are vertices, E1, E2 are side.

[0081] When using, first select any graph A in the dotted graph, such as image 3 the graphic in the upper left of the middle, then the figure 2 All other graphs in , in turn, conduct a similarity test with graph A, such as image 3 If the figure in the lower right part of the center passes the similarity test, select it, and then select the next figure for testing. figure 2 All graphics are selected.

[0082] In the test of judging whether two graphs are similar, for example image 3 Are graphs A and B in the graph similar.

[0083] The overall flow of a similar test is as follows ...

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Abstract

The invention relates to the technical field of computer aided design, and particularly relates to a method for the rapid selection of similar graphics and applied to the CAD. The method comprises the steps of 1, inputting a to-be-selected CAD drawing of similar graphics; 2, selecting a similar graphic A according to the input CAD drawing; 3, judging whether other graphics other than the similar graphic A, and non-contrast graphics exist in the input CAD drawing or not; on the condition that the above graphics still exist in the input CAD drawing, conducting the step 4; otherwise, conducting the step 8; 4, freely selecting one graphic B from the non-contrast graphics; 5, conducting the similarity test on the graphic B and the graphic A; 6, judging whether the graphic B and the graphic A pass the similarity test or not; if not, returning to the step 3; if yes, conducting the step 7; 7, selecting the graphic B; 8, ending the process. Compared with the prior art, whether two graphics are geometrically similar to each other or not can be automatically judged, so that the manual comparison and judgment is avoided. Meanwhile, all similar graphics can be quickly selected through one key, so that the CAD efficiency is greatly improved. Meanwhile, the function of distinguishing between rotation angles / not distinguishing between rotation angles can be selected, so that the selection flexibility of similar graphics is improved.

Description

technical field [0001] The invention relates to the technical field of computer-aided design, in particular to a method for quickly selecting similar graphics used in CAD. Background technique [0002] A CAD drawing often contains a large number of parts of the same kind, which are geometrically similar figures, but with different positions and rotation angles. For these similar graphics, in many cases, they need to be selected at the same time to perform batch operations, such as setting the process, etc. Traditional CAD software generally only supports the selection of graphics of the same layer or color, which has great limitations, especially when a drawing contains multiple parts, the same parts can only be judged by manual comparison, and need to be selected one by one, which is extremely efficient low. Contents of the invention [0003] In order to overcome the deficiencies of the prior art, the present invention designs a method for quickly selecting similar figu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/62G06F17/50
CPCG06F30/17G06F2119/18G06V10/752G06F18/22
Inventor 恽筱源代田田
Owner 上海柏楚电子科技股份有限公司
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