add mousemovement callback method to application_solar

application/include/application_solar.hpp

@@ -19,6 +19,9 @@ class ApplicationSolar : public Application {
   void updateProjection();
   // react to key input
   void keyCallback(int key, int scancode, int action, int mods);
+  //handle delta mouse movement input
+  void mouseCallback(double pos_x, double pos_y);
+
   // draw all objects
   void render() const;
 

application/source/application_solar.cpp

@@ -85,6 +85,11 @@ void ApplicationSolar::keyCallback(int key, int scancode, int action, int mods)
   }
 }
 
+//handle delta mouse movement input
+void ApplicationSolar::mouseCallback(double pos_x, double pos_y) {
+  // mouse handling
+}
+
 // load shader programs
 void ApplicationSolar::initializeShaderPrograms() {
   // store shader program objects in container

framework/include/application.hpp

@@ -22,7 +22,10 @@ class Application {
   virtual void updateProjection() = 0;
   // react to key input
   inline virtual void keyCallback(int key, int scancode, int action, int mods) {};
-  // 
+  //handle delta mouse movement input
+  inline virtual void mouseCallback(double pos_x, double pos_y) {};
+
+  // give shader programs to launcher
   virtual std::map<std::string, shader_program>& getShaderPrograms();
   // draw all objects
   virtual void render() const = 0;

framework/include/launcher.hpp

@@ -40,6 +40,9 @@ class Launcher {
   void update_shader_programs(bool throwing);
   // handle key input
   void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods);
+  //handle mouse movement input
+  void mouse_callback(GLFWwindow* window, double pos_x, double pos_y);
+
   // calculate fps and show in window title
   void show_fps();
   // free resources

framework/source/launcher.cpp

@@ -95,6 +95,11 @@ void Launcher::initialize() {
   glfwSetKeyCallback(m_window, key_func);
   // allow free mouse movement
   glfwSetInputMode(m_window, GLFW_CURSOR, GLFW_CURSOR_DISABLED);
+  auto mouse_func = [](GLFWwindow* w, double a, double b) {
+        static_cast<Launcher*>(glfwGetWindowUserPointer(w))->mouse_callback(w, a, b);
+  };
+  glfwSetCursorPosCallback(m_window, mouse_func);
+  // allow free mouse movement
   // register resizing function
   auto resize_func = [](GLFWwindow* w, int a, int b) {
         static_cast<Launcher*>(glfwGetWindowUserPointer(w))->update_projection(w, a, b);
@@ -201,6 +206,13 @@ void Launcher::key_callback(GLFWwindow* m_window, int key, int scancode, int act
   m_application->keyCallback(key, scancode, action, mods);
 }
 
+//handle mouse movement input
+void Launcher::mouse_callback(GLFWwindow* window, double pos_x, double pos_y) {
+  m_application->mouseCallback(pos_x, pos_y);
+  // reset cursor pos to receive position delta next frame
+  glfwSetCursorPos(m_window, 0.0, 0.0);
+}
+
 // calculate fps and show in m_window title
 void Launcher::show_fps() {
   ++m_frames_per_second;