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AnyToPL(3gv) AnyToPL(3gv) NAME AnyToPL - convert an arbitrary geom to a polylist (OFF file format) SYNOPSIS #include "geomutil.h" Geom *AnyToPL(Geom *, Transform); DESCRIPTION AnyToPL() takes any geom as an arguement. It then returns a polylist object which is geometrically identical to the original geom. The transform argument is the transform applied to the entire object; it should generally be set to TM_IDENTITY when AnyToPL() is first called. Geometric objects are handled in the following ways: Polylists: A transformed copy of the original is returned. Bezier: The object is rediced if necessary, then handled as a mesh ob- ject. Quad: The object is directly transformed into a new polylist. Mesh: The object is directly transformed into a new polylist, with ex- tra polygons added to do the wrapping if necessary. Vect: The object is converted into a polylist containing a 2-gon for every segment in the original vector object. The colors of the faces are the same as the colors of the original object, but this generally is irrelevant since the faces are not visible. Note that edge visibil- ity must be enabled for an object which has been converted from a vect to a polylist to be visible in geomview. List: AnyToPL() is called recursively and the resultant polylists are combined using PLCombine(3). Inst: AnyToPL() is called recursively with a new transformation matrix. The resultant polylists are combined using PLCombine(3). No effort is made to eliminate identical vertices. However, no extra- neous repeated vertexes should be created. The resultant polylist should have the same number of vertexes as the original object. LINKING AnyToPL() is part of the geomutil library; see geomutil(3) for informa- tion on how to link your program with this library. SEE ALSO plcombine(3), anytooff(1), geomview(1), geomutil(3) AUTHOR Celeste Fowler The Geometry Center Geometry Center June 15, 1992 AnyToPL(3gv)
NAME | SYNOPSIS | DESCRIPTION | LINKING | SEE ALSO | AUTHOR
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