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			55 lines
		
	
	
	
		
			991 B
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			55 lines
		
	
	
	
		
			991 B
		
	
	
	
		
			C++
		
	
	
	
	
	
#ifndef OENGINE_OGRE_FADE_H
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#define OENGINE_OGRE_FADE_H
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/*
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  A class that handles fading in the screen from black or fading it out to black.
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  To achieve this, it uses a full-screen Ogre::Overlay
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  inspired by http://www.ogre3d.org/tikiwiki/FadeEffectOverlay (heavily adjusted)
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 */
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namespace Ogre
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{
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    class TextureUnitState;
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    class Overlay;
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}
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namespace OEngine {
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namespace Render
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{
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  class Fader
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  {
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  public:
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    Fader();
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    void update(float dt);
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    void fadeIn(const float time);
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    void fadeOut(const float time);
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    void fadeTo(const int percent, const float time);
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  private:
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    enum FadingMode
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    {
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        FadingMode_In,
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        FadingMode_Out
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    };
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    void applyAlpha();
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    Ogre::TextureUnitState* mFadeTextureUnit;
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    Ogre::Overlay* mOverlay;
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    FadingMode mMode;
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    float mRemainingTime;
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    float mTargetTime;
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    float mTargetAlpha;
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    float mCurrentAlpha;
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    float mStartAlpha;
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  protected:
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  };
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}}
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#endif
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