129 lines
3.4 KiB
C++
129 lines
3.4 KiB
C++
#include <igl/read_triangle_mesh.h>
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#include <igl/copyleft/cgal/CSGTree.h>
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#include <igl/opengl/glfw/Viewer.h>
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#include <igl/jet.h>
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#include <Eigen/Core>
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#include "tutorial_shared_path.h"
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int main(int argc, char * argv[])
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{
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using namespace Eigen;
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using namespace igl::copyleft::cgal;
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using namespace std;
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using namespace igl;
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cout<<R"(
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[,] Toggle between boolean sub-tree operations
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)";
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MatrixXi FA,FB,FC,FD,FE;
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MatrixXd VA,VB,VC,VD,VE;
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// Read in inputs as double precision floating point meshes
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read_triangle_mesh(TUTORIAL_SHARED_PATH "/cube.obj" ,VA,FA);
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read_triangle_mesh(TUTORIAL_SHARED_PATH "/sphere.obj" ,VB,FB);
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read_triangle_mesh(TUTORIAL_SHARED_PATH "/xcylinder.obj",VC,FC);
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read_triangle_mesh(TUTORIAL_SHARED_PATH "/ycylinder.obj",VD,FD);
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read_triangle_mesh(TUTORIAL_SHARED_PATH "/zcylinder.obj",VE,FE);
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igl::opengl::glfw::Viewer viewer;
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int num_views = 5+4;
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int view_id = num_views-1;
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const auto & update = [&]()
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{
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viewer.data().clear();
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// CSGTree templated on type of F
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VectorXd I;
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const auto & set_mesh =
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[&](const MatrixXd & V, const MatrixXi & F, const int i)
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{
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viewer.data().set_mesh(V,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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CSGTree M;
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Matrix<MatrixXi::Index,Dynamic,1> 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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viewer.data().set_mesh(M.cast_V<MatrixXd>(),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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MatrixXd C;
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jet(I,1,5,C);
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viewer.data().set_colors(C);
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};
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update();
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viewer.callback_key_down =
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[&](igl::opengl::glfw::Viewer &viewer, unsigned char key, int mods)->bool
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{
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switch(key)
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{
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case ']':
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view_id = (view_id+1)%num_views;
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break;
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case '[':
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view_id = (view_id+num_views-1)%num_views;
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break;
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default:
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return false;
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}
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update();
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return true;
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};
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viewer.launch();
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}
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