public virtual void gluTessEndPolygon()
{
GLUmesh mesh;
try
{
requireState(TessState.T_IN_POLYGON);
state = TessState.T_DORMANT;
if (this.mesh == null)
{
if (!flagBoundary)
{
/* Try some special code to make the easy cases go quickly
* (eg. convex polygons). This code does NOT handle multiple contours,
* intersections, edge flags, and of course it does not generate
* an explicit mesh either.
*/
if (Render.__gl_renderCache(this))
{
polygonData = null;
return;
}
}
if (!flushCache())
{
throw new System.SystemException(); /* could've used a label*/
}
}
/* Determine the polygon normal and project vertices onto the plane
* of the polygon.
*/
Normal.__gl_projectPolygon(this);
/* __gl_computeInterior( tess ) computes the planar arrangement specified
* by the given contours, and further subdivides this arrangement
* into regions. Each region is marked "inside" if it belongs
* to the polygon, according to the rule given by windingRule.
* Each interior region is guaranteed be monotone.
*/
if (!Sweep.__gl_computeInterior(this))
{
throw new System.SystemException(); /* could've used a label */
}
mesh = this.mesh;
if (!fatalError)
{
bool rc = true;
/* If the user wants only the boundary contours, we throw away all edges
* except those which separate the interior from the exterior.
* Otherwise we tessellate all the regions marked "inside".
*/
if (boundaryOnly)
{
rc = TessMono.__gl_meshSetWindingNumber(mesh, 1, true);
}
else
{
rc = TessMono.__gl_meshTessellateInterior(mesh);
}
if (!rc)
{
throw new System.SystemException(); /* could've used a label */
}
Mesh.__gl_meshCheckMesh(mesh);
if (callBegin != NULL_CB || callEnd != NULL_CB || callVertex != NULL_CB || callEdgeFlag != NULL_CB || callBeginData != NULL_CB || callEndData != NULL_CB || callVertexData != NULL_CB || callEdgeFlagData != NULL_CB)
{
if (boundaryOnly)
{
Render.__gl_renderBoundary(this, mesh); /* output boundary contours */
}
else
{
Render.__gl_renderMesh(this, mesh); /* output strips and fans */
}
}
// if (callMesh != NULL_CB) {
//
///* Throw away the exterior faces, so that all faces are interior.
// * This way the user doesn't have to check the "inside" flag,
// * and we don't need to even reveal its existence. It also leaves
// * the freedom for an implementation to not generate the exterior
// * faces in the first place.
// */
// TessMono.__gl_meshDiscardExterior(mesh);
// callMesh.mesh(mesh); /* user wants the mesh itself */
// mesh = null;
// polygonData = null;
// return;
// }
}
Mesh.__gl_meshDeleteMesh(mesh);
polygonData = null;
mesh = null;
}
catch (System.Exception e)
{
SupportClass.WriteStackTrace(e, Console.Error);
callErrorOrErrorData(GLU.GLU_OUT_OF_MEMORY);
}
}
