111 lines
2.8 KiB
C++
Executable File
111 lines
2.8 KiB
C++
Executable File
#include <igl/readOFF.h>
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#include <igl/viewer/Viewer.h>
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#include <igl/comiso/miq.h>
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#include <igl/barycenter.h>
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#include <igl/avg_edge_length.h>
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#include <igl/comiso/nrosy.h>
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#include <sstream>
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#include <igl/rotate_vectors.h>
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Eigen::VectorXi Seams;
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// Cuts
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Eigen::VectorXi C;
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// Singularities
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Eigen::VectorXd S;
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// Cross field
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Eigen::MatrixXd X;
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Eigen::MatrixXd X2;
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// Create a texture that hides the integer translation in the parametrization
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void line_texture(Eigen::Matrix<char,Eigen::Dynamic,Eigen::Dynamic> &texture_R,
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Eigen::Matrix<char,Eigen::Dynamic,Eigen::Dynamic> &texture_G,
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Eigen::Matrix<char,Eigen::Dynamic,Eigen::Dynamic> &texture_B)
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{
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unsigned size = 128;
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unsigned size2 = size/2;
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unsigned lineWidth = 3;
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texture_R.setConstant(size, size, 255);
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for (unsigned i=0; i<size; ++i)
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for (unsigned j=size2-lineWidth; j<=size2+lineWidth; ++j)
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texture_R(i,j) = 0;
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for (unsigned i=size2-lineWidth; i<=size2+lineWidth; ++i)
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for (unsigned j=0; j<size; ++j)
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texture_R(i,j) = 0;
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texture_G = texture_R;
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texture_B = texture_R;
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}
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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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Eigen::MatrixXd V;
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Eigen::MatrixXi F;
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// Load a mesh in OFF format
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igl::readOFF("../shared/3holes.off", V, F);
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// Contrain one face
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VectorXi b(1);
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b << 0;
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MatrixXd bc(1,3);
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bc << 1, 0, 0;
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// Create a smooth 4-RoSy field
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igl::nrosy(V,F,b,bc,VectorXi(),VectorXd(),MatrixXd(),4,0.5,X,S);
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// Find the the orthogonal vector
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MatrixXd B1,B2,B3;
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igl::local_basis(V,F,B1,B2,B3);
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X2 = igl::rotate_vectors(X, VectorXd::Constant(1,M_PI/2), B1, B2);
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Eigen::MatrixXd UV;
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Eigen::MatrixXi FUV;
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double gradient_size = 50;
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double iter = 0;
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double stiffness = 5.0;
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bool direct_round = 0;
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igl::miq(V,
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F,
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X,
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X2,
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UV,
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FUV,
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gradient_size,
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stiffness,
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direct_round,
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iter);
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// Face barycenters
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Eigen::MatrixXd MF;
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igl::barycenter(V, F, MF);
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double scale = .5*igl::avg_edge_length(V, F);
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// Plot the mesh
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igl::Viewer viewer;
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viewer.set_mesh(V, F);
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// Plot the field
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viewer.add_edges (MF, MF+scale*X ,Eigen::RowVector3d(1,0,1));
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viewer.add_edges (MF, MF+scale*X2,Eigen::RowVector3d(1,0,1));
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viewer.set_uv(UV,FUV);
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viewer.options.show_texture = true;
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Eigen::Matrix<char,Eigen::Dynamic,Eigen::Dynamic> texture_R, texture_G, texture_B;
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line_texture(texture_R, texture_G, texture_B);
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viewer.set_texture(texture_R, texture_B, texture_G);
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// Increase the thickness of the lines
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viewer.options.line_width = 2.0f;
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// Launch the viewer
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viewer.launch();
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}
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