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Boundary-Sampled Halfspaces: A New Representation for Constructive Solid Modeling

delete2021-07-19
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OA
AI
X
Xingyi Du *
Q
Qingnan Zhou
N
Nathan Carr
T
Tao Ju
DOI:10.1145/3450626.3459870delete
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Abstract

Abstract

En 中文
We present a novel representation of solid models for shape design. Like Constructive Solid Geometry (CSG), the solid shape is constructed from a set of halfspaces without the need for an explicit boundary structure. Instead of using Boolean expressions as in CSG, the shape is defined by sparsely placed samples on the boundary of each halfspace. This representation, called Boundary-Sampled Halfspaces (BSH), affords greater agility and expressiveness than CSG while simplifying the reverse engineering process. We discuss theoretical properties of the representation and present practical algorithms for boundary extraction and conversion from other representations. Our algorithms are demonstrated on both 2D and 3D examples.
Keywords:
CSG
shape design
reverse engineering
arrangements
graph cut
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Journal

ACM Transactions on Graphics cover
ACM Transactions on Graphics
IF:
9.5
Papers:
4.7K
Citations:
3.6W

Organization

A
adobe systems inc.
Scholars:
273
Papers: 305
Citations: 0
W
washington university (wustl)
Scholars:
5.5W
Papers: 4.5W
Citations: 70