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1.发明公开
公开(公告)号：EP2050076A2
公开(公告)日：2009-04-22
申请号：EP07814003.5
申请日：2007-08-11
IPC分类号： G06T17/20
CPC分类号： G06T17/20
摘要： A system, method, and computer program for storing a polygonal topology, comprising representing a primitive with a plurality of vertices, internal half- edges and external half-edges; and storing said plurality of vertices in a vertex array and said plurality of external half-edges in a half-edge array, wherein said arrays are indexed and parallel to one another; whereby said primitive is re¬ created from said parallel array with said internal half-edges that are implicit from a primitive structure and appropriate means and computer-readable instructions.
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公开(公告)号：EP2050079A1
公开(公告)日：2009-04-22
申请号：EP07814006.8
申请日：2007-08-11
IPC分类号： G06T17/30
摘要： A system, method, and computer program for tessellation, comprising tessellating a curve having a plurality of polygons; connecting said plurality of polygons in a preferred direction; decomposing polygons into a plurality of triangles; and whereby a mesh representation is creating from said plurality of triangles, and appropriate means and computer-readable instructions.
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3.发明公开
公开(公告)号：EP2050078A2
公开(公告)日：2009-04-22
申请号：EP07814005.0
申请日：2007-08-11
IPC分类号： G06T17/30
摘要： A system, method, and computer program for for organizing elements for compression, comprising nesting a hierarchical topological structure having a plurality of elements; arranging said plurality of elements in a pattern to facilitate data compression; representing said pattern as four arrays; and compressing said plurality of elements from said arrays, and appropriate means and computer-readable instructions.
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公开(公告)号：EP2050077A1
公开(公告)日：2009-04-22
申请号：EP07814004.3
申请日：2007-08-11
IPC分类号： G06T17/30
摘要： A system, method, and computer program for producing a visualization format from CAD data comprising producing a BREP model for visualization, wherein said BREP model has a topology component and a geometry component; removing a plurality of redundant control points from said geometry component; normalizing a plurality of knot vectors and a plurality of weight components from said geometry component; recognizing an analytic geometry from said geometry component; recognizing a plurality of equivalents from said geometry component; and converting said analytic geometry to said light model representation, and appropriate means and computer-readable instructions.
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