update bundled_deps

bundled_deps/libigl/igl/opengl/glfw/Viewer.h

@@ -0,0 +1,178 @@
+// This file is part of libigl, a simple c++ geometry processing library.
+//
+// Copyright (C) 2014 Daniele Panozzo <daniele.panozzo@gmail.com>
+//
+// This Source Code Form is subject to the terms of the Mozilla Public License
+// v. 2.0. If a copy of the MPL was not distributed with this file, You can
+// obtain one at http://mozilla.org/MPL/2.0/.
+#ifndef IGL_OPENGL_GLFW_VIEWER_H
+#define IGL_OPENGL_GLFW_VIEWER_H
+
+#ifndef IGL_OPENGL_4
+#define IGL_OPENGL_4
+#endif
+
+#include "../../igl_inline.h"
+#include "../MeshGL.h"
+#include "../ViewerCore.h"
+#include "../ViewerData.h"
+#include "ViewerPlugin.h"
+
+#include <Eigen/Core>
+#include <Eigen/Geometry>
+
+#include <vector>
+#include <string>
+#include <cstdint>
+
+#define IGL_MOD_SHIFT           0x0001
+#define IGL_MOD_CONTROL         0x0002
+#define IGL_MOD_ALT             0x0004
+#define IGL_MOD_SUPER           0x0008
+
+struct GLFWwindow;
+
+namespace igl
+{
+namespace opengl
+{
+namespace glfw
+{
+  // GLFW-based mesh viewer
+  class Viewer
+  {
+  public:
+    // UI Enumerations
+    enum class MouseButton {Left, Middle, Right};
+    enum class MouseMode { None, Rotation, Zoom, Pan, Translation} mouse_mode;
+    IGL_INLINE int launch(bool resizable = true,bool fullscreen = false);
+    IGL_INLINE int launch_init(bool resizable = true,bool fullscreen = false);
+    IGL_INLINE bool launch_rendering(bool loop = true);
+    IGL_INLINE void launch_shut();
+    IGL_INLINE void init();
+    IGL_INLINE void init_plugins();
+    IGL_INLINE void shutdown_plugins();
+    Viewer();
+    ~Viewer();
+    // Mesh IO
+    IGL_INLINE bool load_mesh_from_file(const std::string & mesh_file_name);
+    IGL_INLINE bool   save_mesh_to_file(const std::string & mesh_file_name);
+    // Callbacks
+    IGL_INLINE bool key_pressed(unsigned int unicode_key,int modifier);
+    IGL_INLINE bool key_down(int key,int modifier);
+    IGL_INLINE bool key_up(int key,int modifier);
+    IGL_INLINE bool mouse_down(MouseButton button,int modifier);
+    IGL_INLINE bool mouse_up(MouseButton button,int modifier);
+    IGL_INLINE bool mouse_move(int mouse_x,int mouse_y);
+    IGL_INLINE bool mouse_scroll(float delta_y);
+    // Scene IO
+    IGL_INLINE bool load_scene();
+    IGL_INLINE bool load_scene(std::string fname);
+    IGL_INLINE bool save_scene();
+    IGL_INLINE bool save_scene(std::string fname);
+    // Draw everything
+    IGL_INLINE void draw();
+    // OpenGL context resize
+    IGL_INLINE void resize(int w,int h); // explicitly set window size
+    IGL_INLINE void post_resize(int w,int h); // external resize due to user interaction
+    // Helper functions
+    IGL_INLINE void snap_to_canonical_quaternion();
+    IGL_INLINE void open_dialog_load_mesh();
+    IGL_INLINE void open_dialog_save_mesh();
+    IGL_INLINE ViewerData& data();
+
+    // Append a new "slot" for a mesh (i.e., create empty entires at the end of
+    // the data_list and opengl_state_list.
+    //
+    // Returns the id of the last appended mesh
+    //
+    // Side Effects:
+    //   selected_data_index is set this newly created, last entry (i.e.,
+    //   #meshes-1)
+    IGL_INLINE int append_mesh();
+
+    // Erase a mesh (i.e., its corresponding data and state entires in data_list
+    // and opengl_state_list)
+    //
+    // Inputs:
+    //   index  index of mesh to erase
+    // Returns whether erasure was successful <=> cannot erase last mesh
+    //
+    // Side Effects:
+    //   If selected_data_index is greater than or equal to index then it is
+    //   decremented
+    // Example:
+    //   // Erase all mesh slots except first and clear remaining mesh
+    //   viewer.selected_data_index = viewer.data_list.size()-1;
+    //   while(viewer.erase_mesh(viewer.selected_data_index)){};
+    //   viewer.data().clear();
+    //
+    IGL_INLINE bool erase_mesh(const size_t index);
+
+    // Retrieve mesh index from its unique identifier
+    // Returns 0 if not found
+    IGL_INLINE size_t mesh_index(const int id) const;
+
+    // Alec: I call this data_list instead of just data to avoid confusion with
+    // old "data" variable.
+    // Stores all the data that should be visualized
+    std::vector<ViewerData> data_list;
+
+    size_t selected_data_index;
+    int next_data_id;
+    GLFWwindow* window;
+    // Stores all the viewing options
+    ViewerCore core;
+    // List of registered plugins
+    std::vector<ViewerPlugin*> plugins;
+    // Temporary data stored when the mouse button is pressed
+    Eigen::Quaternionf down_rotation;
+    int current_mouse_x;
+    int current_mouse_y;
+    int down_mouse_x;
+    int down_mouse_y;
+    float down_mouse_z;
+    Eigen::Vector3f down_translation;
+    bool down;
+    bool hack_never_moved;
+    // Keep track of the global position of the scrollwheel
+    float scroll_position;
+    // C++-style functions
+    //
+    // Returns **true** if action should be cancelled.
+    std::function<bool(Viewer& viewer)> callback_init;
+    std::function<bool(Viewer& viewer)> callback_pre_draw;
+    std::function<bool(Viewer& viewer)> callback_post_draw;
+    std::function<bool(Viewer& viewer, int button, int modifier)> callback_mouse_down;
+    std::function<bool(Viewer& viewer, int button, int modifier)> callback_mouse_up;
+    std::function<bool(Viewer& viewer, int mouse_x, int mouse_y)> callback_mouse_move;
+    std::function<bool(Viewer& viewer, float delta_y)> callback_mouse_scroll;
+    std::function<bool(Viewer& viewer, unsigned int key, int modifiers)> callback_key_pressed;
+    // THESE SHOULD BE DEPRECATED:
+    std::function<bool(Viewer& viewer, unsigned int key, int modifiers)> callback_key_down;
+    std::function<bool(Viewer& viewer, unsigned int key, int modifiers)> callback_key_up;
+    // Pointers to per-callback data
+    void* callback_init_data;
+    void* callback_pre_draw_data;
+    void* callback_post_draw_data;
+    void* callback_mouse_down_data;
+    void* callback_mouse_up_data;
+    void* callback_mouse_move_data;
+    void* callback_mouse_scroll_data;
+    void* callback_key_pressed_data;
+    void* callback_key_down_data;
+    void* callback_key_up_data;
+
+  public:
+      EIGEN_MAKE_ALIGNED_OPERATOR_NEW
+  };
+
+} // end namespace
+} // end namespace
+} // end namespace
+
+#ifndef IGL_STATIC_LIBRARY
+#  include "Viewer.cpp"
+#endif
+
+#endif