You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
44 lines
1.2 KiB
44 lines
1.2 KiB
#include <igl/floor.h>
|
|
#include <igl/readOFF.h>
|
|
#include <igl/find.h>
|
|
#include <igl/opengl/glfw/Viewer.h>
|
|
#include <iostream>
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
using namespace Eigen;
|
|
using namespace std;
|
|
MatrixXd V;
|
|
MatrixXi F;
|
|
igl::readOFF(TUTORIAL_SHARED_PATH "/decimated-knight.off",V,F);
|
|
|
|
// 100 random indices into rows of F
|
|
VectorXi I;
|
|
igl::floor((0.5*(VectorXd::Random(100,1).array()+1.)*F.rows()).eval(),I);
|
|
|
|
// 50 random indices into rows of I
|
|
VectorXi J;
|
|
igl::floor((0.5*(VectorXd::Random(50,1).array()+1.)*I.rows()).eval(),J);
|
|
|
|
VectorXi K = I(J);
|
|
// igl::slice(I,J,K); no longer needed
|
|
|
|
// default green for all faces
|
|
MatrixXd C = RowVector3d(0.4,0.8,0.3).replicate(F.rows(),1);
|
|
// Red for each in K
|
|
MatrixXd R = RowVector3d(1.0,0.3,0.3).replicate(K.rows(),1);
|
|
// C(K,:) = R
|
|
C(K,Eigen::all) = R;
|
|
// igl::slice_into(R,K,1,C); no longer needed
|
|
|
|
Eigen::Array<bool,Eigen::Dynamic,1> W = Eigen::VectorXd::Random(F.rows()).array()>0.5;
|
|
// Set 1/4 of the colors to blue
|
|
MatrixXd B = RowVector3d(0.3,0.3,1.0).replicate(W.count(),1);
|
|
C(igl::find(W),Eigen::all) = B;
|
|
|
|
// Plot the mesh with pseudocolors
|
|
igl::opengl::glfw::Viewer viewer;
|
|
viewer.data().set_mesh(V, F);
|
|
viewer.data().set_colors(C);
|
|
viewer.launch();
|
|
}
|
|
|