Jérémie Dumas
37d585ef87
Now viewer menu can be overriden with lambda function (for simple override), or virtual methods (for more complex situations).
74 lines
2.0 KiB
C++
Executable File
74 lines
2.0 KiB
C++
Executable File
#include "tutorial_shared_path.h"
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#include <igl/opengl/glfw/Viewer.h>
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#include <igl/opengl/glfw/imgui/ImGuiMenu.h>
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#include <igl/opengl/glfw/imgui/ImGuiHelpers.h>
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#include <string>
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#include <map>
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#include <iostream>
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// Add custom data to a viewer mesh
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struct MeshData
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{
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std::string name;
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Eigen::RowVector3d color;
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};
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int last_colored_index = -1;
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// Set colors of each mesh
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void update_colors(igl::opengl::glfw::Viewer &viewer)
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{
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for (auto &data : viewer.data_list)
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{
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data.set_colors(data.attr<MeshData>().color);
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}
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viewer.data_list[viewer.selected_data_index].set_colors(Eigen::RowVector3d(0.9,0.1,0.1));
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last_colored_index = viewer.selected_data_index;
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}
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int main(int argc, char * argv[])
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{
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igl::opengl::glfw::Viewer viewer;
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auto names = {"cube.obj","sphere.obj","xcylinder.obj","ycylinder.obj","zcylinder.obj"};
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for(const auto & name : names)
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{
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viewer.load_mesh_from_file(std::string(TUTORIAL_SHARED_PATH) + "/" + name);
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viewer.data().attr<MeshData>().name = name;
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viewer.data().attr<MeshData>().color = Eigen::RowVector3d::Random();
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}
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// Attach a custom menu
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igl::opengl::glfw::imgui::ImGuiMenu menu;
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viewer.plugins.push_back(&menu);
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// Customize default menu
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menu.draw_viewer_menu_func = [&]()
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{
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if (ImGui::Combo("Selected Mesh", (int *) &viewer.selected_data_index,
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[&](int i) { return viewer.data_list[i].attr<MeshData>().name.c_str(); },
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viewer.data_list.size())
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|| last_colored_index != viewer.selected_data_index)
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{
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update_colors(viewer);
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}
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};
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// Color each mesh differently
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update_colors(viewer);
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viewer.callback_key_down =
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[&](igl::opengl::glfw::Viewer &, unsigned int key, int mod)
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{
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// Delete
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if(key == '3')
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{
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viewer.erase_mesh(viewer.selected_data_index);
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update_colors(viewer);
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return true;
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}
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return false;
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};
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viewer.launch();
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return EXIT_SUCCESS;
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}
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