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[ChaoM <>]

Hello Pranav:
     

       In the CGAL Manaul, a closed Polyhedron must meet some Conditions. As
you say, firstly  limited to convex polyhedrons.  Problems which I solved is
two(or more) polyhedrons(polyhedrons' surface is composed of triangles)
intersect with each other, so I need to compute one poly's points whether
inside other polys.
      Finally, I solved my problem by using the Nef Polyhedron, and the
second limited condition of the closed Polyhedron is "the smallest unit of
polyhedral surfaces, such as Triangles,rects" must be orderd(For examlpe
:Clockwise, or Counterclockwise) .
     More detail ,you can check the "Nef Polyhedron"  in the CGAL Manual. 
    Hope to help you ~



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