CAD MODEL COMPRESSION VIA AUTOMATED BLOCK GENERATION
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United States of America Patent
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Issued Date -
Aug 5, 2021
app pub date -
Aug 21, 2019
filing date -
Sep 17, 2018
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Abstract
A CAD model comprises multiple entities. Each entity comprises one or more subentities, wherein a subentity is a vertex, an edge or a face. From the CAD model a group of multiple entities comprising an identical geometry is obtained. This step comprises verifying whether the entities of a pair of entities comprise an identical geometry via sequentially verifying identity conditions of a sequence of multiple identity conditions, until either an identity condition of the sequence fails or all identity conditions of the sequence are verified. Each identity condition is based on the subentities of the pair of entities. A block definition comprising a block geometry based on said identical geometry is created. In the CAD model, the entities of the group are replaced with block references comprising a pointer to the block definition. The CAD model is thereby compressed.
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