Add camera rotation animation and possibility to show/hide GUI in testbed application

testbed/src/Gui.cpp

@@ -43,7 +43,7 @@ double Gui::mCachedPhysicsStepTime = 0;
 Gui::Gui(TestbedApplication* app)
     : mApp(app), mSimulationPanel(nullptr), mSettingsPanel(nullptr), mPhysicsPanel(nullptr),
       mRenderingPanel(nullptr), mFPSLabel(nullptr), mFrameTimeLabel(nullptr), mTotalPhysicsTimeLabel(nullptr),
-      mPhysicsStepTimeLabel(nullptr)
+      mPhysicsStepTimeLabel(nullptr), mIsDisplayed(true)
 {
 
 }
@@ -84,14 +84,18 @@ void Gui::drawAll() {
 
 void Gui::draw() {
 
-  mScreen->draw_setup();
-  mScreen->clear();
-  mScreen->draw_contents();
+  if (mIsDisplayed) {
+      mScreen->draw_setup();
+      mScreen->draw_contents();
+  }
 }
 
 void Gui::drawTearDown() {
 
-  mScreen->draw_widgets();
+  if (mIsDisplayed) {
+      mScreen->draw_widgets();
+  }
+
   mScreen->draw_teardown();
 }
 

testbed/src/Gui.h

@@ -92,6 +92,9 @@ class Gui {
         std::vector<CheckBox*> mCheckboxesScenes;
         ComboBox* mComboBoxScenes;
 
+        /// True if the GUI is displayed
+        bool mIsDisplayed;
+
         // -------------------- Methods -------------------- //
 
         static void resetScroll();
@@ -158,6 +161,10 @@ class Gui {
         void onMouseButtonEvent(int button, int action, int modifiers);
 
         void onKeyboardEvent(int key, int scancode, int action, int modifiers);
+
+        bool getIsDisplayed() const;
+
+        void setIsDisplayed(bool isDisplayed);
 };
 
 inline void Gui::resetScroll() {
@@ -176,4 +183,12 @@ inline std::string Gui::floatToString(float value, int precision) {
     return ss.str();
 }
 
+inline bool Gui::getIsDisplayed() const {
+    return mIsDisplayed;
+}
+
+inline void Gui::setIsDisplayed(bool isDisplayed) {
+    mIsDisplayed = isDisplayed;
+}
+
 #endif

testbed/src/Scene.cpp

@@ -38,7 +38,7 @@ Scene::Scene(const std::string& name, EngineSettings& engineSettings, bool isSha
         mViewportWidth(0), mViewportHeight(0), mIsShadowMappingEnabled(isShadowMappingEnabled),
         mAreContactPointsDisplayed(true), mAreContactNormalsDisplayed(false), mAreBroadPhaseAABBsDisplayed(false),
         mAreCollidersAABBsDisplayed(false), mAreCollisionShapesDisplayed(false), mIsWireframeEnabled(false),
-        mInitZoom(2.0f) {
+        mInitZoom(2.0f), mIsCameraRotationAnimationEnabled(false) {
 
 }
 

testbed/src/Scene.h

@@ -158,6 +158,9 @@ class Scene : public rp3d::EventListener {
         /// Initial zoom factor
         float mInitZoom;
 
+        /// True if the automatic camera rotation animation is enabled
+        bool mIsCameraRotationAnimationEnabled;
+
         // -------------------- Methods -------------------- //
 
         /// Set the scene position (where the camera needs to look at)
@@ -274,6 +277,13 @@ class Scene : public rp3d::EventListener {
 
         /// Return a reference to the engine settings of the scene
         EngineSettings& getEngineSettings();
+
+        /// Return true if the camera rotation animation is enabled
+        bool getIsCameraRotationAnimationEnabled() const;
+
+        /// Set whether the camera rotation animation is enabled or not
+        void setIsCameraRotationAnimationEnabled(bool isRotationEnabled);
+
 };
 
 // Called when a keyboard event occurs
@@ -381,4 +391,14 @@ inline EngineSettings& Scene::getEngineSettings() {
     return mEngineSettings;
 }
 
+// Return true if the scene rotation is enabled
+inline bool Scene::getIsCameraRotationAnimationEnabled() const {
+    return mIsCameraRotationAnimationEnabled;
+}
+
+// Set whether the scene rotation is enabled or no
+inline void Scene::setIsCameraRotationAnimationEnabled(bool isRotationEnabled) {
+    mIsCameraRotationAnimationEnabled = isRotationEnabled;
+}
+
 #endif

testbed/src/SceneDemo.cpp

@@ -49,7 +49,7 @@ SceneDemo::SceneDemo(const std::string& name, EngineSettings& settings, reactphy
                      mQuadShader("shaders/quad.vert", "shaders/quad.frag"),
                      mVBOQuad(GL_ARRAY_BUFFER), mDebugVBOLinesVertices(GL_ARRAY_BUFFER), mDebugVBOTrianglesVertices(GL_ARRAY_BUFFER),
                      mMeshFolderPath("meshes/"), mPhysicsCommon(physicsCommon), mPhysicsWorld(nullptr), mIsPhysicsWorldSimulated(isPhysicsWorldSimulated),
-                     mIsMovingBody(false), mMovingBody(nullptr) {
+                     mIsMovingBody(false), mMovingBody(nullptr), mCameraRotationAngle(0) {
 
     shadowMapTextureLevel++;
 
@@ -143,6 +143,16 @@ void SceneDemo::update() {
 		// Update the transform used for the rendering
 		(*it)->updateTransform(mInterpolationFactor);
 	}
+
+    if (mIsCameraRotationAnimationEnabled) {
+        rotateCameraAnimation();
+    }
+}
+
+void SceneDemo::rotateCameraAnimation() {
+
+   const float angle  = 0.1f * (PI / 180.0);
+   mCamera.rotateAroundWorldPoint(Vector3(0, 1, 0), angle, mCenterScene);
 }
 
 // Update the physics world (take a simulation step)

testbed/src/SceneDemo.h

@@ -135,6 +135,8 @@ class SceneDemo : public Scene, rp3d::RaycastCallback {
         /// Pointer to the body that is currently moved with the mouse by the user
         rp3d::RigidBody* mMovingBody;
 
+        float mCameraRotationAngle;
+
         // -------------------- Methods -------------------- //
 
         /// Create the Shadow map FBO and texture
@@ -208,6 +210,8 @@ class SceneDemo : public Scene, rp3d::RaycastCallback {
 
         /// Called when a raycast hit occurs (used to move a body with the mouse)
         virtual rp3d::decimal notifyRaycastHit(const rp3d::RaycastInfo& raycastInfo) override;
+
+        void rotateCameraAnimation();
 };
 
 // Enabled/Disable the shadow mapping

testbed/src/TestbedApplication.cpp

@@ -604,7 +604,19 @@ void TestbedApplication::keyboard_event(int key, int scancode, int action, int m
         return;
     }
 
-    // Close application on escape key
+    // Show/hide the GUI with "i" key
+    if (key == GLFW_KEY_I && action == GLFW_PRESS) {
+        mGui.setIsDisplayed(!mGui.getIsDisplayed());
+        return;
+    }
+
+    // Start/Stop camera rotation animation with "r" key
+    if (key == GLFW_KEY_R && action == GLFW_PRESS) {
+        mCurrentScene->setIsCameraRotationAnimationEnabled(!mCurrentScene->getIsCameraRotationAnimationEnabled());
+        return;
+    }
+
+    // Pause the application on "p" key
     if (key == GLFW_KEY_P && action == GLFW_PRESS) {
 
         if (mTimer.isRunning()) {