Body-and-cad geometric constraint systems

9 years 2 months ago
Body-and-cad geometric constraint systems
Motivated by constraint-based CAD software, we introduce a new, very general, rigidity model: the body-and-cad structure, composed of rigid bodies in 3D constrained by pairwise coincidence, angle and distance constraints. We have identified 21 relevant geometric constraints and a new, necessary, but not sufficient, counting condition for minimal rigidity of body-and-cad structures: nested sparsity. We remark that the classical body-and-bar rigidity model can be viewed as a body-and-cad structure that uses only one constraint from this new set of constraints.
Kirk Haller, Audrey Lee-St. John, Meera Sitharam,
Added 19 May 2010
Updated 19 May 2010
Type Conference
Year 2009
Where SAC
Authors Kirk Haller, Audrey Lee-St. John, Meera Sitharam, Ileana Streinu, Neil White
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