67 lines
1.6 KiB
C++
Executable File
67 lines
1.6 KiB
C++
Executable File
#include <igl/boundary_loop.h>
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#include <igl/harmonic.h>
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#include <igl/map_vertices_to_circle.h>
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#include <igl/readOFF.h>
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#include <igl/opengl/glfw/Viewer.h>
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#include "tutorial_shared_path.h"
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Eigen::MatrixXd V;
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Eigen::MatrixXi F;
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Eigen::MatrixXd V_uv;
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bool key_down(igl::opengl::glfw::Viewer& viewer, unsigned char key, int modifier)
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{
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if (key == '1')
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{
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// Plot the 3D mesh
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viewer.data().set_mesh(V,F);
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viewer.core().align_camera_center(V,F);
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}
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else if (key == '2')
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{
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// Plot the mesh in 2D using the UV coordinates as vertex coordinates
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viewer.data().set_mesh(V_uv,F);
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viewer.core().align_camera_center(V_uv,F);
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}
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viewer.data().compute_normals();
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return false;
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}
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int main(int argc, char *argv[])
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{
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// Load a mesh in OFF format
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igl::readOFF(TUTORIAL_SHARED_PATH "/camelhead.off", V, F);
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// Find the open boundary
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Eigen::VectorXi bnd;
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igl::boundary_loop(F,bnd);
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// Map the boundary to a circle, preserving edge proportions
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Eigen::MatrixXd bnd_uv;
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igl::map_vertices_to_circle(V,bnd,bnd_uv);
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// Harmonic parametrization for the internal vertices
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igl::harmonic(V,F,bnd,bnd_uv,1,V_uv);
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// Scale UV to make the texture more clear
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V_uv *= 5;
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// Plot the mesh
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igl::opengl::glfw::Viewer viewer;
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viewer.data().set_mesh(V, F);
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viewer.data().set_uv(V_uv);
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viewer.callback_key_down = &key_down;
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// Disable wireframe
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viewer.data().show_lines = false;
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// Draw checkerboard texture
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viewer.data().show_texture = true;
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// Launch the viewer
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viewer.launch();
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}
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