File size: 2,313 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 | #include <igl/opengl/glfw/Viewer.h>
#include <igl/read_triangle_mesh.h>
#include <igl/list_to_matrix.h>
#include <igl/matlab_format.h>
#include <igl/AABB.h>
#include <igl/screen_space_selection.h>
#include <igl/opengl/glfw/imgui/ImGuiPlugin.h>
#include <igl/opengl/glfw/imgui/SelectionWidget.h>
int main(int argc, char *argv[])
{
// Inline mesh of a cube
Eigen::MatrixXd V;
Eigen::MatrixXi F;
igl::read_triangle_mesh(
argc>1?argv[1]: TUTORIAL_SHARED_PATH "/armadillo.obj",V,F);
// Plot the mesh
igl::opengl::glfw::Viewer vr;
igl::opengl::glfw::imgui::ImGuiPlugin imgui_plugin;
vr.plugins.push_back(&imgui_plugin);
igl::opengl::glfw::imgui::SelectionWidget widget;
imgui_plugin.widgets.push_back(&widget);
Eigen::VectorXd W = Eigen::VectorXd::Zero(V.rows());
Eigen::Array<double,Eigen::Dynamic,1> and_visible =
Eigen::Array<double,Eigen::Dynamic,1>::Zero(V.rows());
const Eigen::MatrixXd CM = (Eigen::MatrixXd(2,3)<<
0.3,0.3,0.5,
255.0/255.0,228.0/255.0,58.0/255.0).finished();
bool only_visible = false;
const auto update = [&]()
{
const bool was_face_based = vr.data().face_based;
Eigen::VectorXd S = W;
if(only_visible) { S.array() *= and_visible; }
vr.data().set_data(S,0,1,igl::COLOR_MAP_TYPE_PLASMA,2);
vr.data().face_based = was_face_based;
vr.data().set_colormap(CM);
};
igl::AABB<Eigen::MatrixXd, 3> tree;
tree.init(V,F);
widget.callback = [&]()
{
screen_space_selection(V,F,tree,vr.core().view,vr.core().proj,vr.core().viewport,widget.L,W,and_visible);
update();
};
vr.callback_key_pressed = [&](decltype(vr) &,unsigned int key, int mod)
{
switch(key)
{
case ' ': only_visible = !only_visible; update(); return true;
case 'D': case 'd': W.setZero(); update(); return true;
}
return false;
};
std::cout<<R"(
Usage:
[space] Toggle whether to take visibility into account
D,d Clear selection
)";
vr.data().set_mesh(V,F);
vr.data().set_face_based(true);
vr.core().background_color.head(3) = CM.row(0).head(3).cast<float>();
vr.data().line_color.head(3) = (CM.row(0).head(3)*0.5).cast<float>();
vr.data().show_lines = F.rows() < 20000;
update();
vr.launch();
}
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