smsvn -> ssc-hg glue: rearrange directory structure

src/LuaExpressionTransform.h

@@ -0,0 +1,68 @@
+/* LuaExpressionTransform - Handle transforming a list of items.  Cache item transforms based on fPositionOffsetFromCenter and iItemIndex for speed. */
+
+#ifndef LuaExpressionTransform_H
+#define LuaExpressionTransform_H
+
+#include "Actor.h"
+#include "LuaReference.h"
+#include <map>
+
+class LuaExpressionTransform
+{
+public:
+	LuaExpressionTransform();
+	~LuaExpressionTransform();
+
+	void SetFromReference( const LuaReference &ref );
+	void SetNumSubdivisions( int iNumSubdivisions ) { ASSERT( iNumSubdivisions > 0 ); m_iNumSubdivisions = iNumSubdivisions; }
+
+	void TransformItemCached( Actor &a, float fPositionOffsetFromCenter, int iItemIndex, int iNumItems );
+	void TransformItemDirect( Actor &a, float fPositionOffsetFromCenter, int iItemIndex, int iNumItems ) const;
+	const Actor::TweenState &GetTransformCached( float fPositionOffsetFromCenter, int iItemIndex, int iNumItems ) const;
+	void ClearCache() { m_mapPositionToTweenStateCache.clear(); }
+
+protected:
+
+	LuaReference m_exprTransformFunction;	// params: self,offset,itemIndex,numItems
+	int m_iNumSubdivisions;	// 1 == one evaluation per position
+	struct PositionOffsetAndItemIndex
+	{
+		float fPositionOffsetFromCenter;
+		int iItemIndex;
+
+		bool operator<( const PositionOffsetAndItemIndex &other ) const
+		{
+			if( fPositionOffsetFromCenter != other.fPositionOffsetFromCenter )
+				return fPositionOffsetFromCenter < other.fPositionOffsetFromCenter;
+			return iItemIndex < other.iItemIndex;
+		}
+	};
+	mutable map<PositionOffsetAndItemIndex,Actor::TweenState> m_mapPositionToTweenStateCache;
+};
+
+#endif
+
+/*
+ * (c) 2003-2004 Chris Danford
+ * All rights reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, and/or sell copies of the Software, and to permit persons to
+ * whom the Software is furnished to do so, provided that the above
+ * copyright notice(s) and this permission notice appear in all copies of
+ * the Software and that both the above copyright notice(s) and this
+ * permission notice appear in supporting documentation.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF
+ * THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS
+ * INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT
+ * OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+ * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+ * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */