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lib/maxsdk70/include/ParticleFlow/RandObjLinker.h

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+/*! \file RandObjLinker.h
+    \brief Class definitions for RandObjLinker
+				RandObjLinker links (creates) a RandGenerator for each
+				supplied Object (usually its a particle system).
+				Tests/Operators that use randomization have this an instance
+				of this class as a member. A Test/Operator may serve
+				several particle systems. For each particle system the
+				Test/Operator has to keep a dedicated copy of RandGenerator.
+				This copy of RandGenerator is used exclusively for the
+				designated particle system. This scheme allows not to mix
+				randomization for different particle systems.
+*/
+/**********************************************************************
+ *<
+	CREATED BY: Oleg Bayborodin
+
+	HISTORY:	created 12-04-2001
+
+ *>	Copyright (c) 2001, All Rights Reserved.
+ **********************************************************************/
+
+#ifndef _RANDOBJLINKER_H
+#define _RANDOBJLINKER_H
+
+#include "max.h"
+
+#include "PFExport.h"
+#include "RandGenerator.h"
+
+class RandObjLinker {
+public:
+
+	PFExport RandObjLinker();
+	PFExport ~RandObjLinker();
+
+	// to initialize random generator for a particle container "pCont"
+	PFExport bool Init(IObject* pCont, int randomSeed);
+	// to release random generator for a particle container "pCont"
+	PFExport void Release(IObject* pCont);
+	// to get a random generator associated with a particle container "pCont"
+	PFExport RandGenerator* GetRandGenerator(IObject* pCont) const;
+	// to deallocate all random generators and all data
+	PFExport void FreeAll();
+
+private:
+	bool HasPContainer(IObject* pCont) const;
+	bool AddPContainer(IObject* pCont, int randomSeed);
+
+	// const access to class members
+	int							num()							const { return m_num; }
+	const Tab<IObject*>&		particleContainers()			const { return m_particleContainers; }
+	IObject*					particleContainer(int index)	const { return m_particleContainers[index]; }
+	const Tab<RandGenerator*>&	randGenerators()				const { return m_randGenerators; }
+	RandGenerator*				randGenerator(int index)		const { return m_randGenerators[index]; }
+
+	// access to class members
+	int&					_num()							{ return m_num; }
+	Tab<IObject*>&			_particleContainers()			{ return m_particleContainers; }
+	IObject*&				_particleContainer(int index)	{ return m_particleContainers[index]; }
+	Tab<RandGenerator*>&	_randGenerators()				{ return m_randGenerators; }
+	RandGenerator*&			_randGenerator(int index)		{ return m_randGenerators[index]; }
+
+protected:
+	int m_num;
+	Tab<IObject*> m_particleContainers;
+	Tab<RandGenerator*> m_randGenerators;
+};
+
+
+
+#endif // _RANDOBJLINKER_H_