Title:
CST: Constructive Solid Trimming for Rendering BReps and CSG
CST: Constructive Solid Trimming for Rendering BReps and CSG
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Author(s)
Hable, John
Rossignac, Jarek
Rossignac, Jarek
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Abstract
To eliminate the need to evaluate the intersection curves in explicit representations of surface cutouts or of trimmed faces in BReps of CSG solids, we advocate using Constructive Solid Trimming (CST). A CST face is the intersection of a surface with a Blist representation of a trimming CSG volume. We propose a new, GPU-based, CSG rendering algorithm, which trims the boundary of each primitive using a Blist of its Active Zone. This approach is faster than the previously reported Blister approach, eliminates occasional speckles of wrongly colored pixels, and provides additional capabilities: painting on surfaces, rendering semitransparent CSG models, and highlighting selected features in the BReps of CSG models.
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Date Issued
2006
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1725560 bytes
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Text
Resource Subtype
Technical Report