System and method for composition of NURBS surfaces
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United States of America Patent
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Oct 9, 2012
Grant Date -
Feb 19, 2009
app pub date -
Jun 26, 2008
filing date -
Jun 28, 2007
priority date (Note) -
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Abstract
A system, method, and computer program for preserving design intent of a Non-Uniform Rational B-spline (NURBS) surface without representation of a parent surface, comprising representing an output surface having control points that is independent from a refinement of the surface; interpolating a base surface from the output surface; calculating a delta vector that is a difference between the output surface and the base surface; and transforming the delta vector based upon a local coordinate system of a normal vector and a tangent plane of the base surface and appropriate means and computer-readable instructions.
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