Refactoring of transitions. No buildIn, just buildOut

There is still work to be done here, this is just an initial commit for this feature.

example/src/magSlide.cpp

@@ -25,13 +25,13 @@ void magSlide::update(u_int64_t deltaTime)
 
     switch (slideState)
     {
-        case SlideState::BuildIn:
-            if (runningTime >= buildInDuration)
-            {
-                setState(Normal);
-				activeTransition = nullptr;
-            }
-            break;
+//        case SlideState::BuildIn:
+//            if (runningTime >= buildInDuration)
+//            {
+//                setState(Normal);
+//				activeTransition = nullptr;
+//            }
+//            break;
 
         case SlideState::Normal:
             if (runningTime >= buildOutStartTime)
@@ -95,15 +95,15 @@ void magSlide::setState(SlideState state)
 
 void magSlide::setTransitionDuration(u_int64_t tDuration)
 {
-    buildInDuration = buildOutDuration = tDuration;
+    buildOutDuration = tDuration;
 }
 
 const std::string magSlide::getSlideStateName()
 {
     switch (slideState)
     {
-        case SlideState::BuildIn:
-            return "BuildIn";
+//        case SlideState::BuildIn:
+//            return "BuildIn";
         case SlideState::BuildOut:
             return "BuildOut";
         case Normal:
@@ -121,17 +121,24 @@ void magSlide::start(u_int64_t startTime)
 {
 	this->startTime = startTime;
 	runningTime = 0;
-	endTime = duration + buildInDuration + buildOutDuration;
+	endTime = duration + buildOutDuration;
 	buildOutStartTime = endTime - buildOutDuration;
-	slideState = magSlide::SlideState::BuildIn;
-	if (buildIn != nullptr)
-	{
-		activeTransition = buildIn;
-		activeTransition->start();
-	}
+	slideState = magSlide::SlideState::Normal;
+//	if (buildIn != nullptr)
+//	{
+//		activeTransition = buildIn;
+//		activeTransition->start();
+//	}
+	position.set(0, 0);
+	opacity = 255;
 	isComplete = false;
 }
 
+void magSlide::draw()
+{
+	ofSetColor(255, opacity);
+}
+
 
 ////////////////////////////////////////////////////////
 #pragma mark MAG_IMAGE_SLIDE
@@ -152,6 +159,7 @@ void magImageSlide::setup(ofImage &image)
 
 void magImageSlide::draw()
 {
+	magSlide::draw();
     image.draw(position, width, height);
 }
 
@@ -191,11 +199,12 @@ void magVideoSlide::update()
 
 void magVideoSlide::draw()
 {
+	magSlide::draw();
 	videoPlayer.draw(position.x, position.y, width, height);
 }
 
 void magVideoSlide::useVideoForDuration()
 {
-    duration = u_int64_t((videoPlayer.getDuration()*1000)) - buildInDuration - buildOutDuration;
+    duration = u_int64_t((videoPlayer.getDuration()*1000)) - buildOutDuration;
 }
 

example/src/magSlide.h

@@ -15,7 +15,7 @@ public:
 	magSlide(std::string type);
 //    ~magSlide();
 	virtual void update(u_int64_t deltaTime);
-	virtual void draw() = 0;
+	virtual void draw();
 
 	/**
 	 * Sets the slide up for playback. This method must be
@@ -62,7 +62,7 @@ public:
 	enum SlideState : short
 	{
 		Off = 0,
-		BuildIn,
+//		BuildIn,
 		Normal,
 		BuildOut,
 		Complete
@@ -145,12 +145,12 @@ protected:
 	float width;
 	float height;
 	ofPoint position;
-	float opacity = 1.0;
+	float opacity = 255;
 	ResizeOptions resizeOption = NoResize;
 	SlideState slideState = Off;
 	bool isComplete = false;
 
-	std::shared_ptr<magSlideTransition> buildIn = nullptr;
+//	std::shared_ptr<magSlideTransition> buildIn = nullptr;
 	std::shared_ptr<magSlideTransition> buildOut = nullptr;
 	std::shared_ptr<magSlideTransition> activeTransition = nullptr;
 	/**
@@ -173,7 +173,7 @@ protected:
 	/**
 	 * The duration of the build in transition or effect, in milliseconds.
 	 */
-	u_int64_t buildInDuration;
+//	u_int64_t buildInDuration;
 
 	/**
 	 * The duration of the build out transition or effect, in milliseconds.

example/src/magSlideShowSource.cpp

@@ -271,8 +271,8 @@ bool magSlideShowSource::loadFromXml()
 		settings.resizeOption = magSlide::FillProportionally;
 	}
 
-	settings.transitionName = "FadeIn";
-	settings.transitionDuration = 1.0;
+	settings.transitionName = "Dissolve";
+	settings.transitionDuration = 0.5;
 	initialize(settings);
 
 	return true;
@@ -282,7 +282,7 @@ bool magSlideShowSource::loadFromXml()
 void magSlideShowSource::addSlide(std::shared_ptr<magSlide> slide)
 {
 //	ofLogVerbose("addSlide") << slide->getId();
-	slides.push_back(slide);
+	slides.insert(slides.begin(), slide);
 	auto rOption = slide->getResizeOption();
 
 	// If the slide does not have a resize option assign
@@ -341,10 +341,10 @@ void magSlideShowSource::addSlide(std::shared_ptr<magSlide> slide)
 		static ofParameterGroup bogusParamGroup; // This is temporary so that things compile
 
 		auto tf = magSlideTransitionFactory::instance();
-		slide->buildIn = tf->createTransition(settings.transitionName,
-															  slide,
-															  bogusParamGroup,
-															  slide->buildInDuration);
+//		slide->buildIn = tf->createTransition(settings.transitionName,
+//															  slide,
+//															  bogusParamGroup,
+//															  slide->buildInDuration);
 		slide->buildOut = tf->createTransition(settings.transitionName,
 															   slide,
 															   bogusParamGroup,
@@ -475,7 +475,10 @@ void magSlideShowSource::enqueueSlide(std::shared_ptr<magSlide> slide, u_int64_t
 {
 //	ofLogVerbose() << "Enqueuing slide " << currentSlideIndex << " slide id: " << slide->getId();
 	slide->start(startTime);
-	activeSlides.push_back(slide);
+	if (activeSlides.size() > 1)
+	{
+	}
+	activeSlides.insert(activeSlides.begin(), slide);
 }
 
 void magSlideShowSource::slideStateChanged(const void *sender, ofEventArgs &args)

example/src/magSlideTransition.cpp

@@ -40,4 +40,16 @@ void magFadeInTransition::draw()
 {
 	ofLogVerbose() << "fade in draw";
 	ofSetColor(255, getNormalizedTime() * 255);
-}
+}
+
+void magFadeOutTransition::draw()
+{
+	magSlideTransition::draw();
+
+}
+
+void magDissolveTransition::draw()
+{
+	slide->setOpacity(255 - (getNormalizedTime() * 255));
+	ofLogVerbose("opacity") << slide->getId() <<  " " << slide->getOpacity();
+}

example/src/magSlideTransition.h

@@ -49,6 +49,7 @@ public:
 protected:
 	std::string name = "Void";
 	std::shared_ptr<magSlide> slide;
+	std::shared_ptr<magSlide> nextSlide;
 	u_int64_t runningTime;
 	u_int64_t duration;
 	u_int64_t endTime;
@@ -68,6 +69,26 @@ public:
 	void draw() override ;
 };
 
+class magFadeOutTransition : public magSlideTransition
+{
+public:
+	magFadeOutTransition()
+	{
+		name = "FadeOut";
+	}
+
+	void draw() override ;
+};
 
+class magDissolveTransition : public magSlideTransition
+{
+public:
+	magDissolveTransition()
+	{
+		name = "Dissolve";
+	}
+
+	void draw() override;
+};
 
 #endif

example/src/magSlideTransitionFactory.cpp

@@ -38,10 +38,10 @@ magSlideTransitionFactory* magSlideTransitionFactory::_instance = 0;
 magSlideTransitionFactory::magSlideTransitionFactory()
 {
 	magSlideTransition voidTransition;
-	magFadeInTransition fadeIn;
+	magDissolveTransition dissolve;
 
 	registerTransition<magSlideTransition>(voidTransition);
-	registerTransition<magFadeInTransition>(fadeIn);
+	registerTransition<magDissolveTransition>(dissolve);
 }
 
 magSlideTransitionFactory* magSlideTransitionFactory::instance()