1 files changed, 103 insertions, 0 deletions
diff --git a/Runtime/Filters/Particles/ParticleRenderer.h b/Runtime/Filters/Particles/ParticleRenderer.h
new file mode 100644
index 0000000..d63661c
--- /dev/null
+++ b/Runtime/Filters/Particles/ParticleRenderer.h
@@ -0,0 +1,103 @@
+#ifndef PARTICLERENDERER_H
+#define PARTICLERENDERER_H
+
+#include <vector>
+#include "Runtime/Filters/Renderer.h"
+#include "Runtime/Math/Color.h"
+#include "Runtime/Math/Rect.h"
+#include "Runtime/Math/Vector3.h"
+#include "Runtime/Math/Vector2.h"
+#include "Runtime/Math/AnimationCurve.h"
+using std::vector;
+class ParticleEmitter;
+class MinMaxAABB;
+
+
+
+
+enum ParticleRenderMode {
+	kBillboard = 0,
+	kStretch2D = 1,
+	kStretch3D = 3,
+	kSortedBillboard = 2,
+	kBillboardFixedHorizontal = 4,
+	kBillboardFixedVertical = 5,
+	
+	/// Internal modes
+	kBillboardRotated = 1000,
+	kBillboardFixedRotated = 1001
+};
+
+class ParticleRenderer : public Renderer {
+public:
+	REGISTER_DERIVED_CLASS (ParticleRenderer, Renderer)
+	DECLARE_OBJECT_SERIALIZE (ParticleRenderer)
+
+	ParticleRenderer (MemLabelId label, ObjectCreationMode mode);
+	// ~ParticleRenderer(); declared-by-macro
+	
+	virtual void Render (int materialIndex, const ChannelAssigns& channels);
+	
+	// Can operate in either local or world space, so we need to fill whole transform info ourselves
+	virtual void UpdateTransformInfo();
+		
+	virtual void CheckConsistency ();
+	virtual void Reset ();
+
+	virtual void AwakeFromLoad (AwakeFromLoadMode awakeMode);
+	
+	GET_SET_DIRTY (ParticleRenderMode, RenderMode, m_StretchParticles) ;
+	GET_SET_DIRTY (float, LengthScale, m_LengthScale) ;
+	GET_SET_DIRTY (float, VelocityScale, m_VelocityScale) ;
+	GET_SET_DIRTY (float, CameraVelocityScale, m_CameraVelocityScale) ;
+	GET_SET_DIRTY (float, MaxParticleSize, m_MaxParticleSize) ;
+	int GetUVAnimationXTile() const { return m_UVAnimation.xTile; }
+	int GetUVAnimationYTile() const { return m_UVAnimation.yTile; }
+	float GetUVAnimationCycles() const { return m_UVAnimation.cycles; }
+	void SetUVAnimationXTile (int v);
+	void SetUVAnimationYTile (int v);
+	void SetUVAnimationCycles (float v);
+		
+	void UpdateParticleRenderer();
+
+	Rectf *GetUVFrames() {return m_UVFrames;};
+	int GetNumUVFrames() {return m_NumUVFrames;};
+	
+	void SetUVFrames(const Rectf *uvFrames, int numFrames);
+	
+private:
+	// from Renderer
+	virtual void UpdateRenderer();
+	
+	void AdjustBoundsForStretch( const ParticleEmitter& emitter, MinMaxAABB& aabb ) const;
+
+protected:
+	struct UVAnimation {
+		int xTile;			///< Number of texture tiles in the X direction.
+		int yTile;			///< Number of texture tiles in the Y direction.
+		float cycles;		///< Number of cycles over a particle's life span.
+		DECLARE_SERIALIZE (UVAnimation)
+	};
+	void SetBufferSize (int particleCount);
+	void GenerateUVFrames ();
+
+	int          m_StretchParticles;		///< enum { Billboard = 0, Stretched = 3, Sorted Billboard = 2, Horizontal Billboard = 4, Vertical Billboard = 5 } Should the particles be stretched along their velocity?
+	float        m_LengthScale;		///< When Stretch Particles is enabled, defines the length of the particle compared to its width.
+	float        m_VelocityScale;		///< When Stretch Particles is enabled, defines the length of the particle compared to its velocity.
+	float        m_MaxParticleSize;		///< How large is a particle allowed to be on screen at most? 1 is entire viewport. 0.5 is half viewport.
+	UVAnimation  m_UVAnimation; 	///< Tiled UV settings.
+
+	float        m_CameraVelocityScale;	///< How much the camera motion is factored in when determining particle stretching
+	
+	int			 m_NumUVFrames;		//uv tiles for uv animation
+	Rectf		*m_UVFrames;
+};
+
+template<class TransferFunc>
+void ParticleRenderer::UVAnimation::Transfer (TransferFunc& transfer) {
+	transfer.Transfer (xTile, "x Tile", kSimpleEditorMask);
+	transfer.Transfer (yTile, "y Tile", kSimpleEditorMask);
+	TRANSFER_SIMPLE (cycles);
+}
+
+#endif