libigl_Martin/include/igl/cgal/intersect_other.h

// This file is part of libigl, a simple c++ geometry processing library.
// 
// Copyright (C) 2015 Alec Jacobson <alecjacobson@gmail.com>
// 
// This Source Code Form is subject to the terms of the Mozilla Public License 
// v. 2.0. If a copy of the MPL was not distributed with this file, You can 
// obtain one at http://mozilla.org/MPL/2.0/.
#ifndef IGL_CGAL_INTERSECT_OTHER_H
#define IGL_CGAL_INTERSECT_OTHER_H
#include "../igl_inline.h"
#include "RemeshSelfIntersectionsParam.h"

#include <Eigen/Dense>

#ifdef MEX
#  include <mex.h>
#  include <cassert>
#  undef assert
#  define assert( isOK ) ( (isOK) ? (void)0 : (void) mexErrMsgTxt(C_STR(__FILE__<<":"<<__LINE__<<": failed assertion `"<<#isOK<<"'"<<std::endl) ) )
#endif

namespace igl
{
  namespace cgal
  {
    // INTERSECT_OTHER Given a triangle mesh (VA,FA) and another mesh (VB,FB)
    // find all pairs of intersecting faces. Note that self-intersections are
    // ignored.
    // 
    // Inputs:
    //   VA  #V by 3 list of vertex positions
    //   FA  #F by 3 list of triangle indices into VA
    //   VB  #V by 3 list of vertex positions
    //   FB  #F by 3 list of triangle indices into VB
    //   params   whether to detect only and then whether to only find first
    //     intersection
    // Outputs:
    //   IF  #intersecting face pairs by 2 list of intersecting face pairs,
    //     indexing FA and FB
    //   VVA  #VVA by 3 list of vertex positions
    //   FFA  #FFA by 3 list of triangle indices into VVA
    //   JA  #FFA list of indices into FA denoting birth triangle
    //   IMA  #VVA list of indices into VVA of unique vertices.
    //   VVB  #VVB by 3 list of vertex positions
    //   FFB  #FFB by 3 list of triangle indices into VVB
    //   JB  #FFB list of indices into FB denoting birth triangle
    //   IMB  #VVB list of indices into VVB of unique vertices.
    template <
      typename DerivedVA,
      typename DerivedFA,
      typename DerivedVB,
      typename DerivedFB,
      typename DerivedIF,
      typename DerivedVVA,
      typename DerivedFFA,
      typename DerivedJA,
      typename DerivedIMA,
      typename DerivedVVB,
      typename DerivedFFB,
      typename DerivedJB,
      typename DerivedIMB>
    IGL_INLINE bool intersect_other(
      const Eigen::PlainObjectBase<DerivedVA> & VA,
      const Eigen::PlainObjectBase<DerivedFA> & FA,
      const Eigen::PlainObjectBase<DerivedVB> & VB,
      const Eigen::PlainObjectBase<DerivedFB> & FB,
      const RemeshSelfIntersectionsParam & params,
      Eigen::PlainObjectBase<DerivedIF> & IF,
      Eigen::PlainObjectBase<DerivedVVA> & VVA,
      Eigen::PlainObjectBase<DerivedFFA> & FFA,
      Eigen::PlainObjectBase<DerivedJA>  & JA,
      Eigen::PlainObjectBase<DerivedIMA> & IMA,
      Eigen::PlainObjectBase<DerivedVVB> & VVB,
      Eigen::PlainObjectBase<DerivedFFB> & FFB,
      Eigen::PlainObjectBase<DerivedJB>  & JB,
      Eigen::PlainObjectBase<DerivedIMB> & IMB);
    // Legacy wrapper for detect only using common types.
    //
    // Inputs:
    //   VA  #V by 3 list of vertex positions
    //   FA  #F by 3 list of triangle indices into VA
    //   VB  #V by 3 list of vertex positions
    //   FB  #F by 3 list of triangle indices into VB
    //   first_only  whether to only detect the first intersection.
    // Outputs:
    //   IF  #intersecting face pairs by 2 list of intersecting face pairs,
    //     indexing FA and FB
    // Returns true if any intersections were found
    //
    // See also: remesh_self_intersections
    IGL_INLINE bool intersect_other(
      const Eigen::MatrixXd & VA,
      const Eigen::MatrixXi & FA,
      const Eigen::MatrixXd & VB,
      const Eigen::MatrixXi & FB,
      const bool first_only,
      Eigen::MatrixXi & IF);
  }
}

#ifndef IGL_STATIC_LIBRARY
#  include "intersect_other.cpp"
#endif
  
#endif