55 lines
1.9 KiB
C++
Executable File
55 lines
1.9 KiB
C++
Executable File
#include <igl/read_triangle_mesh.h>
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#include <igl/opengl/glfw/Viewer.h>
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#include <igl/opengl/glfw/imgui/ImGuizmoPlugin.h>
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#include <GLFW/glfw3.h>
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#include <imgui/imgui.h>
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#include <imgui/imgui_internal.h>
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#include <imgui_impl_glfw.h>
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#include <imgui_impl_opengl3.h>
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#include <imguizmo/ImGuizmo.h>
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int main(int argc, char *argv[])
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{
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// Load a mesh from file
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Eigen::MatrixXd V;
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Eigen::MatrixXi F;
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igl::read_triangle_mesh(argc>1?argv[1]: TUTORIAL_SHARED_PATH "/cow.off",V,F);
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// Set up viewer
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igl::opengl::glfw::Viewer vr;
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vr.data().set_mesh(V,F);
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// Custom menu
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igl::opengl::glfw::imgui::ImGuizmoPlugin plugin;
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vr.plugins.push_back(&plugin);
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// Initialize ImGuizmo at mesh centroid
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plugin.T.block(0,3,3,1) =
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0.5*(V.colwise().maxCoeff() + V.colwise().minCoeff()).transpose().cast<float>();
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// Update can be applied relative to this remembered initial transform
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const Eigen::Matrix4f T0 = plugin.T;
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// Attach callback to apply imguizmo's transform to mesh
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plugin.callback = [&](const Eigen::Matrix4f & T)
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{
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const Eigen::Matrix4d TT = (T*T0.inverse()).cast<double>().transpose();
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vr.data().set_vertices(
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(V.rowwise().homogeneous()*TT).rowwise().hnormalized());
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vr.data().compute_normals();
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};
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// Maya-style keyboard shortcuts for operation
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vr.callback_key_pressed = [&](decltype(vr) &,unsigned int key, int mod)
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{
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switch(key)
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{
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case ' ': plugin.visible = !plugin.visible; return true;
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case 'W': case 'w': plugin.operation = ImGuizmo::TRANSLATE; return true;
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case 'E': case 'e': plugin.operation = ImGuizmo::ROTATE; return true;
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case 'R': case 'r': plugin.operation = ImGuizmo::SCALE; return true;
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}
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return false;
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};
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std::cout<<R"(
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W,w Switch to translate operation
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E,e Switch to rotate operation
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R,r Switch to scale operation
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)";
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vr.launch();
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}
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