Alec Jacobson
f3f7879364
* split up 406; cmake
* split up 716
* rm old file
* 716 changes to main
* 709 split up
* missing include
* special syntax for windows ❄️
* stupid windows struct/class
* split up 805
* split up 610)'
90 lines
2.3 KiB
C++
90 lines
2.3 KiB
C++
#include "get_mesh.h"
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#include <igl/copyleft/cgal/CSGTree.h>
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void get_mesh(
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const Eigen::MatrixXd &VA,
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const Eigen::MatrixXi &FA,
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const Eigen::MatrixXd &VB,
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const Eigen::MatrixXi &FB,
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const Eigen::MatrixXd &VC,
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const Eigen::MatrixXi &FC,
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const Eigen::MatrixXd &VD,
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const Eigen::MatrixXi &FD,
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const Eigen::MatrixXd &VE,
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const Eigen::MatrixXi &FE,
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const int view_id,
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Eigen::MatrixXd &V,
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Eigen::MatrixXi &F,
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Eigen::VectorXd &I)
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{
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using namespace Eigen;
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const auto & set_mesh = [&V,&F,&I](const Eigen::MatrixXd &V_, const Eigen::MatrixXi &F_, const int i)
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{
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V = V_;
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F = F_;
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I = VectorXd::Constant(F.rows(),1,i);
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};
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switch(view_id)
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{
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case 0:
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set_mesh(VA,FA,5);
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break;
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case 1:
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set_mesh(VB,FB,4);
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break;
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case 2:
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set_mesh(VC,FC,3);
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break;
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case 3:
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set_mesh(VD,FD,2);
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break;
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case 4:
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set_mesh(VE,FE,1);
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break;
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default:
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{
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igl::copyleft::cgal::CSGTree M;
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VectorXi J;
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switch(view_id)
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{
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case 5:
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// Compute result of (A ∩ B)
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M = {{VA,FA},{VB,FB},"i"};
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J = M.J().array()+0;
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break;
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case 6:
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// Compute result of (C ∪ D)
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M = {{VC,FC},{VD,FD},"u"};
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J = M.J().array()+FA.rows()+FB.rows();
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break;
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case 7:
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// Compute result of (C ∪ D) ∪ E
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M = {{{VC,FC},{VD,FD},"u"},{VE,FE},"u"};
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J = M.J().array()+FA.rows()+FB.rows();
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break;
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case 8:
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// Compute result of (A ∩ B) \ ((C ∪ D) ∪ E)
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M = {{{VA,FA},{VB,FB},"i"},{{{VC,FC},{VD,FD},"u"},{VE,FE},"u"},"m"};
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J = M.J().array()+0;
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break;
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default:
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assert(false && "unknown view id");
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}
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V = M.cast_V<MatrixXd>();
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F = M.F();
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I.resize(M.F().rows(),1);
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// Compute colors based on original facets
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for(int f = 0;f<M.F().rows();f++)
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{
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const int j = J(f);
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I(f) =
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(int)(j<FA.rows())+
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(int)(j<FA.rows()+FB.rows())+
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(int)(j<FA.rows()+FB.rows()+FC.rows())+
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(int)(j<FA.rows()+FB.rows()+FC.rows()+FD.rows())+
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(int)(j<FA.rows()+FB.rows()+FC.rows()+FD.rows()+FE.rows());
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}
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}
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}
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}
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