File size: 2,142 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 72 73 74 75 76 77 78 79 80 81 82 83 84 | #include <igl/readOFF.h>
#include <igl/opengl/glfw/Viewer.h>
#include <igl/opengl/glfw/imgui/ImGuiPlugin.h>
#include <igl/opengl/glfw/imgui/ImGuiMenu.h>
#include <sstream>
Eigen::MatrixXd V;
Eigen::MatrixXi F;
int main(int argc, char *argv[])
{
// Load a mesh in OFF format
igl::readOFF(TUTORIAL_SHARED_PATH "/bunny.off", V, F);
// Find the bounding box
Eigen::Vector3d m = V.colwise().minCoeff();
Eigen::Vector3d M = V.colwise().maxCoeff();
// Corners of the bounding box
Eigen::MatrixXd V_box(8,3);
V_box <<
m(0), m(1), m(2),
M(0), m(1), m(2),
M(0), M(1), m(2),
m(0), M(1), m(2),
m(0), m(1), M(2),
M(0), m(1), M(2),
M(0), M(1), M(2),
m(0), M(1), M(2);
// Edges of the bounding box
Eigen::MatrixXi E_box(12,2);
E_box <<
0, 1,
1, 2,
2, 3,
3, 0,
4, 5,
5, 6,
6, 7,
7, 4,
0, 4,
1, 5,
2, 6,
7 ,3;
// Plot the mesh
igl::opengl::glfw::Viewer viewer;
viewer.data().set_mesh(V, F);
// Plot the corners of the bounding box as points
viewer.data().add_points(V_box,Eigen::RowVector3d(1,0,0));
// Plot the edges of the bounding box
for (unsigned i=0;i<E_box.rows(); ++i)
viewer.data().add_edges
(
V_box.row(E_box(i,0)),
V_box.row(E_box(i,1)),
Eigen::RowVector3d(1,0,0)
);
// Plot labels with the coordinates of bounding box vertices
std::stringstream l1;
l1 << m(0) << ", " << m(1) << ", " << m(2);
viewer.data().add_label(m+Eigen::Vector3d(-0.007, 0, 0),l1.str());
std::stringstream l2;
l2 << M(0) << ", " << M(1) << ", " << M(2);
viewer.data().add_label(M+Eigen::Vector3d(0.007, 0, 0),l2.str());
// activate label rendering
viewer.data().show_custom_labels = true;
// Rendering of text labels is handled by ImGui, so we need to enable the ImGui
// plugin to show text labels.
igl::opengl::glfw::imgui::ImGuiPlugin plugin;
viewer.plugins.push_back(&plugin);
igl::opengl::glfw::imgui::ImGuiMenu menu;
plugin.widgets.push_back(&menu);
menu.callback_draw_viewer_window = [](){};
// Launch the viewer
viewer.launch();
}
|