Initial commit:

PhysX 3.4.0 Update @ 21294896
APEX 1.4.0 Update @ 21275617

[CL 21300167]

1 files changed, 148 insertions, 0 deletions

diff --git a/PhysX_3.4/Samples/PxToolkit/include/PxTkRandom.h b/PhysX_3.4/Samples/PxToolkit/include/PxTkRandom.h
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+// This code contains NVIDIA Confidential Information and is disclosed to you
+// under a form of NVIDIA software license agreement provided separately to you.
+//
+// Notice
+// NVIDIA Corporation and its licensors retain all intellectual property and
+// proprietary rights in and to this software and related documentation and
+// any modifications thereto. Any use, reproduction, disclosure, or
+// distribution of this software and related documentation without an express
+// license agreement from NVIDIA Corporation is strictly prohibited.
+//
+// ALL NVIDIA DESIGN SPECIFICATIONS, CODE ARE PROVIDED "AS IS.". NVIDIA MAKES
+// NO WARRANTIES, EXPRESSED, IMPLIED, STATUTORY, OR OTHERWISE WITH RESPECT TO
+// THE MATERIALS, AND EXPRESSLY DISCLAIMS ALL IMPLIED WARRANTIES OF NONINFRINGEMENT,
+// MERCHANTABILITY, AND FITNESS FOR A PARTICULAR PURPOSE.
+//
+// Information and code furnished is believed to be accurate and reliable.
+// However, NVIDIA Corporation assumes no responsibility for the consequences of use of such
+// information or for any infringement of patents or other rights of third parties that may
+// result from its use. No license is granted by implication or otherwise under any patent
+// or patent rights of NVIDIA Corporation. Details are subject to change without notice.
+// This code supersedes and replaces all information previously supplied.
+// NVIDIA Corporation products are not authorized for use as critical
+// components in life support devices or systems without express written approval of
+// NVIDIA Corporation.
+//
+// Copyright (c) 2008-2016 NVIDIA Corporation. All rights reserved.
+// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
+// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.  
+
+#ifndef PX_TOOLKIT_RANDOM_H
+#define PX_TOOLKIT_RANDOM_H
+
+#include "common/PxPhysXCommonConfig.h"
+#define TEST_MAX_RAND 0xffff
+
+namespace PxToolkit
+{
+	using namespace physx;
+
+	class BasicRandom
+	{
+		public:
+									BasicRandom(PxU32 seed=0)	: mRnd(seed)	{}
+									~BasicRandom()								{}
+
+		PX_FORCE_INLINE	void		setSeed(PxU32 seed)			{ mRnd = seed;											}
+		PX_FORCE_INLINE	PxU32		getCurrentValue()	const	{ return mRnd;											}
+						PxU32		randomize()					{ mRnd = mRnd * 2147001325 + 715136305; return mRnd;	}
+
+		PX_FORCE_INLINE	PxU32		rand()						{ return randomize() & 0xffff;							}
+		PX_FORCE_INLINE	PxU32		rand32()					{ return randomize() & 0xffffffff;						}
+
+						PxF32		randLegacy(PxF32 a, PxF32 b)
+									{
+										const PxF32 r = static_cast<PxF32>(rand())/(static_cast<PxF32>(0x7fff)+1.0f);
+										return r*(b-a) + a;
+									}
+
+						PxI32		randLegacy(PxI32 a, PxI32 b)
+									{
+										return a + static_cast<PxI32>(rand()%(b-a));
+									}
+
+						PxF32		rand(PxF32 a, PxF32 b)
+									{
+										const PxF32 r = rand32()/(static_cast<PxF32>(0xffffffff));
+										return r*(b-a) + a;
+									}
+
+						PxI32		rand(PxI32 a, PxI32 b)
+									{
+										return a + static_cast<PxI32>(rand32()%(b-a));
+									}
+
+						PxF32		randomFloat()
+									{
+										return rand()/(static_cast<PxF32>(0xffff)) - 0.5f;
+									}									
+						PxF32		randomFloat32()
+									{
+										return rand32()/(static_cast<PxF32>(0xffffffff)) - 0.5f;
+									}
+
+						PxF32		randomFloat32(PxReal a, PxReal b) { return rand32()/PxF32(0xffffffff)*(b-a)+a; }
+						void		unitRandomPt(physx::PxVec3& v);	
+						void		unitRandomQuat(physx::PxQuat& v);
+
+						PxVec3		unitRandomPt();
+						PxQuat		unitRandomQuat();
+
+	private:
+						PxU32		mRnd;
+	};
+
+	//--------------------------------------
+	// Fast, very good random numbers
+	//
+	// Period = 2^249
+	//
+	// Kirkpatrick, S., and E. Stoll, 1981; A Very Fast Shift-Register
+	//       Sequence Random Number Generator, Journal of Computational Physics,
+	// V. 40.
+	//
+	// Maier, W.L., 1991; A Fast Pseudo Random Number Generator,
+	// Dr. Dobb's Journal, May, pp. 152 - 157
+
+	class RandomR250
+	{
+	public:
+		RandomR250(PxI32 s); 
+
+		void	setSeed(PxI32 s);
+		PxU32	randI();
+		PxReal	randUnit();
+
+		PxReal rand(PxReal lower, PxReal upper)
+		{
+			return lower + randUnit() * (upper - lower);
+		}
+
+	private:
+		PxU32	mBuffer[250];
+		PxI32	mIndex;
+	};
+
+	void SetSeed(PxU32 seed);
+	PxU32 Rand();
+
+	PX_INLINE PxF32 Rand(PxF32 a,PxF32 b)
+	{
+		const PxF32 r = static_cast<PxF32>(Rand())/(static_cast<PxF32>(TEST_MAX_RAND));
+		return r*(b-a) + a;
+	}
+
+	PX_INLINE PxF32 RandLegacy(PxF32 a,PxF32 b)
+	{
+		const PxF32 r = static_cast<PxF32>(Rand())/(static_cast<PxF32>(0x7fff)+1.0f);
+		return r*(b-a) + a;
+	} 
+
+	//returns numbers from [a, b-1] 
+	PX_INLINE PxI32 Rand(PxI32 a,PxI32 b)
+	{
+		return a + static_cast<PxI32>(Rand()%(b-a));
+	}
+}
+
+#endif