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Merge remote-tracking branch 'upstream/master' into viewer

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Former-commit-id: 93ac038d96
This commit is contained in:
Jérémie Dumas
2018-03-01 20:18:46 -05:00
parent cfe8b1881b 5c32bd7478
commit e47cf8ae94
16 changed files with 325 additions and 330 deletions
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tutorial/206_GeodesicDistance/main.cpp
+48 -47
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@@ -3,71 +3,72 @@
#include <igl/exact_geodesic.h>
#include <igl/colormap.h>
#include <igl/unproject_onto_mesh.h>
#include <iostream>
#include "tutorial_shared_path.h"
Eigen::MatrixXd V;
Eigen::MatrixXi F;
void plotMeshDistance(igl::opengl::glfw::Viewer& viewer, const Eigen::MatrixXd& V, const Eigen::MatrixXi& F, const Eigen::VectorXd& d, const double strip_size )
{
// Rescale the function depending on the strip size
Eigen::VectorXd f = (d/strip_size);
// The function should be 1 on each integer coordinate
f = (f*M_PI).array().sin().abs();
// Compute per-vertex colors
Eigen::MatrixXd C;
igl::colormap(igl::COLOR_MAP_TYPE_INFERNO,f,false,C);
// Plot the mesh
viewer.data().set_mesh(V, F);
viewer.data().set_colors(C);
}
int main(int argc, char *argv[])
{
using namespace Eigen;
using namespace std;
Eigen::MatrixXd V;
Eigen::MatrixXi F;
igl::opengl::glfw::Viewer viewer;
// Load a mesh in OFF format
igl::readOBJ(TUTORIAL_SHARED_PATH "/armadillo.obj", V, F);
const auto update_distance = [&](const int vid)
{
Eigen::VectorXi VS,FS,VT,FT;
// The selected vertex is the source
VS.resize(1);
VS << vid;
// All vertices are the targets
VT.setLinSpaced(V.rows(),0,V.rows()-1);
Eigen::VectorXd d;
std::cout<<"Computing geodesic distance to vertex "<<vid<<"..."<<std::endl;
igl::exact_geodesic(V,F,VS,FS,VT,FT,d);
const double strip_size = 0.05;
// The function should be 1 on each integer coordinate
d = (d/strip_size*M_PI).array().sin().abs().eval();
// Compute per-vertex colors
Eigen::MatrixXd C;
igl::colormap(igl::COLOR_MAP_TYPE_INFERNO,d,false,C);
// Plot the mesh
viewer.data().set_mesh(V, F);
viewer.data().set_colors(C);
};
igl::opengl::glfw::Viewer viewer;
// Plot a distance when a vertex is picked
viewer.callback_mouse_down =
[&](igl::opengl::glfw::Viewer& viewer, int, int)->bool
{
int fid;
Eigen::Vector3f bc;
// Cast a ray in the view direction starting from the mouse position
double x = viewer.current_mouse_x;
double y = viewer.core.viewport(3) - viewer.current_mouse_y;
if(igl::unproject_onto_mesh(Eigen::Vector2f(x,y), viewer.core.view,
viewer.core.proj, viewer.core.viewport, V, F, fid, bc))
{
int max;
bc.maxCoeff(&max);
int vid = F(fid,max);
Eigen::VectorXi VS,FS,VT,FT;
// The selected vertex is the source
VS.resize(1);
VS << vid;
// All vertices are the targets
VT.setLinSpaced(V.rows(),0,V.rows()-1);
Eigen::VectorXd d;
igl::exact_geodesic(V,F,VS,FS,VT,FT,d);
plotMeshDistance(viewer,V,F,d,0.05);
}
return false;
int fid;
Eigen::Vector3f bc;
// Cast a ray in the view direction starting from the mouse position
double x = viewer.current_mouse_x;
double y = viewer.core.viewport(3) - viewer.current_mouse_y;
if(igl::unproject_onto_mesh(
Eigen::Vector2f(x,y),
viewer.core.view,
viewer.core.proj,
viewer.core.viewport,
V,
F,
fid,
bc))
{
int max;
bc.maxCoeff(&max);
int vid = F(fid,max);
update_distance(vid);
return true;
}
return false;
};
viewer.data().set_mesh(V,F);
cout << "Press [space] to smooth." << endl;;
cout << "Press [r] to reset." << endl;;
cout << "Click on mesh to define new source.\n" << std::endl;
update_distance(0);
return viewer.launch();
}