File size: 3,604 Bytes
5b89cb9 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 | #include <igl/avg_edge_length.h>
#include <igl/barycenter.h>
#include <igl/jet.h>
#include <igl/planarize_quad_mesh.h>
#include <igl/quad_planarity.h>
#include <igl/readDMAT.h>
#include <igl/readOFF.h>
#include <igl/slice.h>
#include <igl/opengl/glfw/Viewer.h>
#include <vector>
#include <cstdlib>
// Quad mesh generated from conjugate field
Eigen::MatrixXd VQC;
Eigen::MatrixXi FQC;
Eigen::MatrixXi FQCtri;
Eigen::MatrixXd PQC0, PQC1, PQC2, PQC3;
// Planarized quad mesh
Eigen::MatrixXd VQCplan;
Eigen::MatrixXi FQCtriplan;
Eigen::MatrixXd PQC0plan, PQC1plan, PQC2plan, PQC3plan;
// Scale for visualizing the fields
double global_scale; //TODO: not used
bool key_down(igl::opengl::glfw::Viewer& viewer, unsigned char key, int modifier)
{
using namespace std;
using namespace Eigen;
// Plot the original quad mesh
if (key == '1')
{
// Draw the triangulated quad mesh
viewer.data().set_mesh(VQC, FQCtri);
// Assign a color to each quad that corresponds to its planarity
VectorXd planarity;
igl::quad_planarity( VQC, FQC, planarity);
MatrixXd Ct;
igl::jet(planarity, 0, 0.01, Ct);
MatrixXd C(FQCtri.rows(),3);
C << Ct, Ct;
viewer.data().set_colors(C);
// Plot a line for each edge of the quad mesh
viewer.data().add_edges(PQC0, PQC1, Eigen::RowVector3d(0,0,0));
viewer.data().add_edges(PQC1, PQC2, Eigen::RowVector3d(0,0,0));
viewer.data().add_edges(PQC2, PQC3, Eigen::RowVector3d(0,0,0));
viewer.data().add_edges(PQC3, PQC0, Eigen::RowVector3d(0,0,0));
}
// Plot the planarized quad mesh
if (key == '2')
{
// Draw the triangulated quad mesh
viewer.data().set_mesh(VQCplan, FQCtri);
// Assign a color to each quad that corresponds to its planarity
VectorXd planarity;
igl::quad_planarity( VQCplan, FQC, planarity);
MatrixXd Ct;
igl::jet(planarity, 0, 0.01, Ct);
MatrixXd C(FQCtri.rows(),3);
C << Ct, Ct;
viewer.data().set_colors(C);
// Plot a line for each edge of the quad mesh
viewer.data().add_edges(PQC0plan, PQC1plan, Eigen::RowVector3d(0,0,0));
viewer.data().add_edges(PQC1plan, PQC2plan, Eigen::RowVector3d(0,0,0));
viewer.data().add_edges(PQC2plan, PQC3plan, Eigen::RowVector3d(0,0,0));
viewer.data().add_edges(PQC3plan, PQC0plan, Eigen::RowVector3d(0,0,0));
}
return false;
}
int main(int argc, char *argv[])
{
using namespace Eigen;
using namespace std;
// Load a quad mesh generated by a conjugate field
igl::readOFF(TUTORIAL_SHARED_PATH "/inspired_mesh_quads_Conjugate.off", VQC, FQC);
// Convert it in a triangle mesh
FQCtri.resize(2*FQC.rows(), 3);
FQCtri << FQC.col(0),FQC.col(1),FQC.col(2),
FQC.col(2),FQC.col(3),FQC.col(0);
igl::slice( VQC, FQC.col(0).eval(), 1, PQC0);
igl::slice( VQC, FQC.col(1).eval(), 1, PQC1);
igl::slice( VQC, FQC.col(2).eval(), 1, PQC2);
igl::slice( VQC, FQC.col(3).eval(), 1, PQC3);
// Planarize it
igl::planarize_quad_mesh(VQC, FQC, 100, 0.005, VQCplan);
// Convert the planarized mesh to triangles
igl::slice( VQCplan, FQC.col(0).eval(), 1, PQC0plan);
igl::slice( VQCplan, FQC.col(1).eval(), 1, PQC1plan);
igl::slice( VQCplan, FQC.col(2).eval(), 1, PQC2plan);
igl::slice( VQCplan, FQC.col(3).eval(), 1, PQC3plan);
// Launch the viewer
igl::opengl::glfw::Viewer viewer;
key_down(viewer,'2',0);
viewer.data().invert_normals = true;
viewer.data().show_lines = false;
viewer.callback_key_down = &key_down;
viewer.launch();
}
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