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105 lines
3.1 KiB
105 lines
3.1 KiB
#include <igl/readOFF.h>
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#include <igl/opengl/glfw/Viewer.h>
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#include <igl/opengl/glfw/imgui/ImGuiPlugin.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 <iostream>
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int main(int argc, char *argv[])
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{
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Eigen::MatrixXd V;
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Eigen::MatrixXi F;
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// Load a mesh in OFF format
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igl::readOFF(TUTORIAL_SHARED_PATH "/bunny.off", V, F);
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// Init the viewer
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igl::opengl::glfw::Viewer viewer;
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// Attach a menu plugin
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igl::opengl::glfw::imgui::ImGuiPlugin plugin;
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viewer.plugins.push_back(&plugin);
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igl::opengl::glfw::imgui::ImGuiMenu menu;
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plugin.widgets.push_back(&menu);
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// Customize the menu
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double doubleVariable = 0.1f; // Shared between two menus
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// Add content to the default menu window
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menu.callback_draw_viewer_menu = [&]()
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{
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// Draw parent menu content
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menu.draw_viewer_menu();
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// Add new group
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if (ImGui::CollapsingHeader("New Group", ImGuiTreeNodeFlags_DefaultOpen))
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{
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// Expose variable directly ...
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ImGui::InputDouble("double", &doubleVariable, 0, 0, "%.4f");
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// ... or using a custom callback
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static bool boolVariable = true;
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if (ImGui::Checkbox("bool", &boolVariable))
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{
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// do something
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std::cout << "boolVariable: " << std::boolalpha << boolVariable << std::endl;
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}
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// Expose an enumeration type
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enum Orientation { Up=0, Down, Left, Right };
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static Orientation dir = Up;
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ImGui::Combo("Direction", (int *)(&dir), "Up\0Down\0Left\0Right\0\0");
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// We can also use a std::vector<std::string> defined dynamically
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static int num_choices = 3;
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static std::vector<std::string> choices;
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static int idx_choice = 0;
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if (ImGui::InputInt("Num letters", &num_choices))
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{
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num_choices = std::max(1, std::min(26, num_choices));
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}
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if (num_choices != (int) choices.size())
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{
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choices.resize(num_choices);
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for (int i = 0; i < num_choices; ++i)
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choices[i] = std::string(1, 'A' + i);
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if (idx_choice >= num_choices)
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idx_choice = num_choices - 1;
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}
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ImGui::Combo("Letter", &idx_choice, choices);
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// Add a button
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if (ImGui::Button("Print Hello", ImVec2(-1,0)))
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{
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std::cout << "Hello\n";
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}
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}
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};
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// Draw additional windows
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menu.callback_draw_custom_window = [&]()
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{
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// Define next window position + size
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ImGui::SetNextWindowPos(ImVec2(180.f * menu.menu_scaling(), 10), ImGuiCond_FirstUseEver);
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ImGui::SetNextWindowSize(ImVec2(200, 160), ImGuiCond_FirstUseEver);
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ImGui::Begin(
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"New Window", nullptr,
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ImGuiWindowFlags_NoSavedSettings
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);
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// Expose the same variable directly ...
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ImGui::PushItemWidth(-80);
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ImGui::DragScalar("double", ImGuiDataType_Double, &doubleVariable, 0.1, 0, 0, "%.4f");
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ImGui::PopItemWidth();
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static std::string str = "bunny";
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ImGui::InputText("Name", str);
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ImGui::End();
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};
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// Plot the mesh
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viewer.data().set_mesh(V, F);
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viewer.data().add_label(viewer.data().V.row(0) + viewer.data().V_normals.row(0).normalized()*0.005, "Hello World!");
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viewer.launch();
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}
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