From 3dfe2108cfab31ba3ee5527e217d0d8e99a51162 Mon Sep 17 00:00:00 2001
From: git perforce import user <a@b>
Date: Tue, 25 Oct 2016 12:29:14 -0600
Subject: Initial commit: PhysX 3.4.0 Update @ 21294896 APEX 1.4.0 Update @
 21275617

[CL 21300167]
---
 PhysX_3.4/Samples/SampleBase/ParticleFactory.cpp | 123 +++++++++++++++++++++++
 1 file changed, 123 insertions(+)
 create mode 100644 PhysX_3.4/Samples/SampleBase/ParticleFactory.cpp

(limited to 'PhysX_3.4/Samples/SampleBase/ParticleFactory.cpp')

diff --git a/PhysX_3.4/Samples/SampleBase/ParticleFactory.cpp b/PhysX_3.4/Samples/SampleBase/ParticleFactory.cpp
new file mode 100644
index 00000000..bf554f26
--- /dev/null
+++ b/PhysX_3.4/Samples/SampleBase/ParticleFactory.cpp
@@ -0,0 +1,123 @@
+// 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.  
+
+#include "ParticleFactory.h"
+#include "PsMathUtils.h"
+#include "PxTkRandom.h"
+
+using namespace PxToolkit;
+//----------------------------------------------------------------------------//
+
+void CreateParticleAABB(ParticleData& particleData, const PxBounds3& aabb, const PxVec3& vel, float distance)
+{
+	PxVec3 aabbDim = aabb.getExtents() * 2.0f;
+
+	unsigned sideNumX = (unsigned)PxMax(1.0f, physx::shdfnd::floor(aabbDim.x / distance));
+	unsigned sideNumY = (unsigned)PxMax(1.0f, physx::shdfnd::floor(aabbDim.y / distance));
+	unsigned sideNumZ = (unsigned)PxMax(1.0f, physx::shdfnd::floor(aabbDim.z / distance));
+
+	for(unsigned i=0; i<sideNumX; i++)
+		for(unsigned j=0; j<sideNumY; j++)
+			for(unsigned k=0; k<sideNumZ; k++)
+			{
+				if(particleData.numParticles >= particleData.maxParticles) 
+					break;
+
+				PxVec3 p = PxVec3(i*distance,j*distance,k*distance);
+				p += aabb.minimum;
+
+				particleData.positions[particleData.numParticles] = p;
+				particleData.velocities[particleData.numParticles] = vel;
+				particleData.numParticles++;
+			}
+}
+
+//----------------------------------------------------------------------------//
+
+void CreateParticleSphere(ParticleData& particleData, const PxVec3& pos, const PxVec3& vel, float distance, unsigned sideNum)
+{
+	float rad = sideNum*distance*0.5f;
+	PxVec3 offset((sideNum-1)*distance*0.5f);
+
+	for(unsigned i=0; i<sideNum; i++)
+		for(unsigned j=0; j<sideNum; j++)
+			for(unsigned k=0; k<sideNum; k++)
+			{
+				if(particleData.numParticles >= particleData.maxParticles) 
+					break;
+
+				PxVec3 p = PxVec3(i*distance,j*distance,k*distance);
+				if((p-PxVec3(rad,rad,rad)).magnitude() < rad)
+				{
+					p += pos;
+					p -= offset; // ISG: for symmetry
+
+					particleData.positions[particleData.numParticles] = p;
+					particleData.velocities[particleData.numParticles] = vel;
+					particleData.numParticles++;
+				}
+			}
+}
+
+//-----------------------------------------------------------------------------------------------------------------//
+void CreateParticleRand(ParticleData& particleData, const PxVec3& center, const PxVec3& range,const PxVec3& vel)
+{
+	PxToolkit::SetSeed(0);
+    while(particleData.numParticles < particleData.maxParticles) 
+	{
+		PxVec3 p(Rand(-range.x, range.x), 
+			Rand(-range.y, range.y), 
+			Rand(-range.z, range.z));
+
+		p += center;
+
+		PxVec3 v(Rand(-vel.x, vel.x), 
+			Rand(-vel.y, vel.y), 
+			Rand(-vel.z, vel.z));
+
+		particleData.positions[particleData.numParticles] = p;
+		particleData.velocities[particleData.numParticles] = vel;
+		particleData.numParticles++;
+	}
+}
+
+//----------------------------------------------------------------------------//
+
+void SetParticleRestOffsetVariance(ParticleData& particleData, PxF32 maxRestOffset, PxF32 restOffsetVariance)
+{
+	PxToolkit::SetSeed(0);
+
+	if (particleData.restOffsets.size() == 0)
+		particleData.restOffsets.resize(particleData.maxParticles);
+
+	for (PxU32 i = 0 ; i < particleData.numParticles; ++i)
+		particleData.restOffsets[i] = maxRestOffset*(1.0f - Rand(0.0f, restOffsetVariance));
+}
+
+//----------------------------------------------------------------------------//
-- 
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