NAME fgluTessEndPolygon - delimit a polygon description FORTRAN SPECIFICATION SUBROUTINE fgluTessEndPolygon( CHARACTER*8 tess ) PARAMETERS tess Specifies the tessellation object (created with fgluNewTess). DESCRIPTION fgluTessBeginPolygon and fgluTessEndPolygon delimit the definition of a convex, concave or self-intersecting polygon. Within each fgluTessBeginPolygon/fgluTessEndPolygon pair, there must be one or more calls to fgluTessBeginContour/fgluTessEndContour. Within each contour, there are zero or more calls to fgluTessVertex. The vertices specify a closed contour (the last vertex of each contour is automatically linked to the first). See the fgluTessVertex, fgluTessBeginContour and fgluTessEndContour reference pages for more details. Once fgluTessEndPolygon is called, the polygon is tessellated, and the resulting triangles are described through callbacks. See fgluTessCallback for descriptions of the callback functions. EXAMPLE A quadrilateral with a triangular hole in it can be described like this: gluTessBeginPolygon(tobj, NULL); gluTessBeginContour(tobj); gluTessVertex(tobj, v1, v1); gluTessVertex(tobj, v2, v2); gluTessVertex(tobj, v3, v3); gluTessVertex(tobj, v4, v4); gluTessEndContour(tobj); gluTessBeginContour(tobj); gluTessVertex(tobj, v5, v5); gluTessVertex(tobj, v6, v6); gluTessVertex(tobj, v7, v7); gluTessEndContour(tobj); gluTessEndPolygon(tobj); In the above example the pointers, v1 through v7, should point to different addresses, since the values stored at these addresses will not be read by the tesselator until fgluTessEndPolygon is called. SEE ALSO fgluNewTess, fgluTessBeginContour, fgluTessVertex, fgluTessCallback, fgluTessProperty, fgluTessNormal, fgluTessBeginPolygon