reset view before loading a new file,

reset view when pressing space

MshViewer/Header/OpenGLController.h

@@ -116,6 +116,7 @@ public:
 	void addTransX(double value);
 	void addTransY(double value);
 	void addTransZ(double value);
+	void resetView();
 
 	// main routine
 	GLFWwindow* getWindow() const;

MshViewer/Source/OpenGlController.cpp

@@ -269,6 +269,16 @@ void OpenGLController::addTransZ(double value)
 	dTranslationZ += value;
 }
 
+void OpenGLController::resetView()
+{
+	dTranslationX = 0;
+	dTranslationY = 0;
+	dTranslationZ = 5;
+	fRotationX = 0;
+	fRotationY = 0;
+	fRotationZ = 0;
+}
+
 void OpenGLController::updateScene()
 {
 	// get new matrices
@@ -327,7 +337,7 @@ void OpenGLController::loadMsh(const char * path)
 	catch (std::invalid_argument e)
 	{
 		MessageBox(NULL, e.what(), "MeshViewer 2.0 Error", MB_OK | MB_ICONERROR);
-		exit(1);
+		return; exit(1);
 	}
 
 	// collect vertex data of all models

MshViewer/Source/callback.cpp

@@ -78,6 +78,8 @@ void mouseWheel(GLFWwindow *window, double xoffset, double yoffset)
 
 void keyPress(GLFWwindow *window, int key, int scancode, int action, int mods)
 {
+	OpenGLController* controller = reinterpret_cast<OpenGLController*>(glfwGetWindowUserPointer(window));
+
 	if (action == GLFW_PRESS || action == GLFW_REPEAT)
 	{
 		switch (key)
@@ -93,6 +95,9 @@ void keyPress(GLFWwindow *window, int key, int scancode, int action, int mods)
 		case GLFW_KEY_PLUS_GER: case GLFW_KEY_KP_ADD:
 			mouse.speed += 0.1;
 			break;
+		case GLFW_KEY_SPACE:
+			controller->resetView();
+			break;
 		default:
 			break;
 		}
@@ -102,6 +107,10 @@ void keyPress(GLFWwindow *window, int key, int scancode, int action, int mods)
 void dragNdrop(GLFWwindow* window, int count, const char** paths)
 {
 	OpenGLController* controller = reinterpret_cast<OpenGLController*>(glfwGetWindowUserPointer(window));
-	if(count > 0)
-		controller->loadMsh(paths[0]);
+	
+	if (count < 1)
+		return;
+
+	controller->resetView();
+	controller->loadMsh(paths[0]);
 }