public void Tessellate(WindingRule windingRule, ElementType elementType, int polySize, CombineCallback combineCallback)
{
if (_vertices != null)
{
ArrayPool <ContourVertex> .Free(_vertices);
ArrayPool <int> .Free(_elements);
_vertices = null;
_elements = null;
}
_windingRule = windingRule;
_combineCallback = combineCallback;
if (_mesh == null)
{
return;
}
// Determine the polygon normal and project vertices onto the plane
// of the polygon.
ProjectPolygon();
// ComputeInterior 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.
ComputeInterior();
// 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 (elementType == ElementType.BoundaryContours)
{
SetWindingNumber(1, true);
}
else
{
TessellateInterior();
}
_mesh.Check();
if (elementType == ElementType.BoundaryContours)
{
OutputContours();
}
else
{
OutputPolymesh(elementType, polySize);
}
MeshUtils.Edge.FreeAll();
MeshUtils.Vertex.FreeAll();
ActiveRegion.FreeAll();
MeshUtils.Face.FreeAll();
ActiveRegionDict.Node.FreeAll();
_mesh = null;
}
