adding capability to clear images on the fly

- (rest will be done on antons machine)

include/openspace/rendering/planets/renderableplanetprojection.h

@@ -77,7 +77,7 @@ protected:
 
 	void textureBind();
 	void project();
-
+	void clearAllProjections();
 private:
 	void imageProjectGPU();
 
@@ -88,6 +88,8 @@ private:
 	properties::IntProperty _rotation;
 	properties::FloatProperty _fadeProjection;
 	properties::BoolProperty _performProjection;
+	properties::BoolProperty _clearAllProjections;
+
 
     ghoul::opengl::ProgramObject* _programObject;
 	ghoul::opengl::ProgramObject* _fboProgramObject;
@@ -136,6 +138,7 @@ private:
 	std::string _target;
 	std::string _frame;
 	std::string _defaultProjImage;
+	std::string _clearingImage;
 	std::string _next;
 
 	bool _capture;

src/rendering/planets/renderableplanetprojection.cpp

@@ -89,6 +89,7 @@ RenderablePlanetProjection::RenderablePlanetProjection(const ghoul::Dictionary&
     , _rotation("rotation", "Rotation", 0, 0, 360)
 	, _fadeProjection("fadeProjections", "Image Fading Factor", 0.f, 0.f, 1.f)
     , _performProjection("performProjection", "Perform Projections", true)
+	, _clearAllProjections("clearAllProjections", "Clear Projections", false)
     , _programObject(nullptr)
 	, _fboProgramObject(nullptr)
     , _texture(nullptr)
@@ -96,6 +97,7 @@ RenderablePlanetProjection::RenderablePlanetProjection(const ghoul::Dictionary&
     , _textureProj(nullptr)
 	, _textureWhiteSquare(nullptr)
     , _geometry(nullptr)
+	, _clearingImage(absPath("${OPENSPACE_DATA}/scene/common/textures/clear.png"))
 {
 	std::string name;
 	bool success = dictionary.getValue(constants::scenegraphnode::keyName, name);
@@ -166,6 +168,7 @@ RenderablePlanetProjection::RenderablePlanetProjection(const ghoul::Dictionary&
 	addProperty(_rotation);
 	addProperty(_fadeProjection);
 	addProperty(_performProjection);
+	addProperty(_clearAllProjections);
 
 	addProperty(_colorTexturePath);
 	_colorTexturePath.onChange(std::bind(&RenderablePlanetProjection::loadTexture, this));
@@ -431,12 +434,23 @@ void RenderablePlanetProjection::project(){
 	_capture = false;
 }
 
+void RenderablePlanetProjection::clearAllProjections(){
+	float tmp = _fadeProjection;
+	_fadeProjection = 1.f;
+	_projectionTexturePath = _clearingImage;
+	imageProjectGPU();
+	_fadeProjection = tmp;
+	_clearAllProjections = false;
+}
+
 
 #define GPU_PROJ
 void RenderablePlanetProjection::render(const RenderData& data){
 	if (!_programObject) return;
 	if (!_textureProj) return;
 	
+	if (_clearAllProjections) clearAllProjections();
+
 	_camScaling = data.camera.scaling();
 	_up = data.camera.lookUpVector();
 

src/util/imagesequencer2.cpp

@@ -74,7 +74,7 @@ void ImageSequencer2::updateSequencer(double time){
 		Time::ref().setDeltaTime(0.1);
 	} // Time is not properly updated when time jump with dt = 0 
 
-	if (_currentTime < time){
+	if (_currentTime != time){
 		_previousTime = _currentTime;
 		_currentTime = time;
 	}