62 lines
2.2 KiB
C
62 lines
2.2 KiB
C
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// This file is part of libigl, a simple c++ geometry processing library.
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//
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// Copyright (C) 2016 Alec Jacobson
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//
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// This Source Code Form is subject to the terms of the Mozilla Public License
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// v. 2.0. If a copy of the MPL was not distributed with this file, You can
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// obtain one at http://mozilla.org/MPL/2.0/.
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#ifndef IGL_COPYLEFT_CGAL_PROJECTED_CDT_H
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#define IGL_COPYLEFT_CGAL_PROJECTED_CDT_H
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#include "../../igl_inline.h"
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#include <Eigen/Core>
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#include <CGAL/Plane_3.h>
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#include <CGAL/Point_3.h>
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#include <CGAL/Object.h>
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#include <vector>
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namespace igl
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{
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namespace copyleft
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{
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namespace cgal
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{
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// Given a list of objects (e.g., resulting from intersecting a triangle
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// with many other triangles), construct a constrained Delaunay
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// triangulation on a given plane (P), by inersting constraints for each
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// object projected onto that plane.
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//
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// Inputs:
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// objects list of objects. This should lie on the given plane (P),
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// otherwise they are added to the cdt _after_ their non-trivial
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// projection
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// P plane upon which all objects lie and upon which the CDT is
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// conducted
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// Outputs:
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// vertices list of vertices of the CDT mesh _back on the 3D plane_
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// faces list of list of triangle indices into vertices
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//
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template <typename Kernel, typename Index>
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IGL_INLINE void projected_cdt(
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const std::vector<CGAL::Object> & objects,
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const CGAL::Plane_3<Kernel> & P,
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std::vector<CGAL::Point_3<Kernel> >& vertices,
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std::vector<std::vector<Index> >& faces);
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// Outputs:
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// V #V by 3 list of vertices of the CDT mesh _back on the 3D plane_,
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// **cast** from the number type of Kernel to the number type of
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// DerivedV
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// F #F by 3 list of triangle indices into V
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template < typename Kernel, typename DerivedV, typename DerivedF>
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IGL_INLINE void projected_cdt(
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const std::vector<CGAL::Object> & objects,
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const CGAL::Plane_3<Kernel> & P,
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Eigen::PlainObjectBase<DerivedV> & V,
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Eigen::PlainObjectBase<DerivedF> & F);
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}
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}
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}
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#ifndef IGL_STATIC_LIBRARY
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# include "projected_cdt.cpp"
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#endif
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#endif
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