NvCloth library v1.0.0

1 files changed, 68 insertions, 0 deletions

diff --git a/NvCloth/src/PhaseConfig.cpp b/NvCloth/src/PhaseConfig.cpp
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+++ b/NvCloth/src/PhaseConfig.cpp
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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) 2008-2017 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 "NvCloth/PhaseConfig.h"
+#include "PsMathUtils.h"
+#include <algorithm>
+
+using namespace physx;
+
+namespace nv
+{
+namespace cloth
+{
+PhaseConfig transform(const PhaseConfig&);
+}
+}
+
+using namespace nv;
+
+namespace
+{
+float safeLog2(float x)
+{
+	float saturated = std::max(0.0f, std::min(x, 1.0f));
+	return saturated ? shdfnd::log2(saturated) : -FLT_MAX_EXP;
+}
+}
+
+// convert from user input to solver format
+cloth::PhaseConfig cloth::transform(const PhaseConfig& config)
+{
+	PhaseConfig result(config.mPhaseIndex);
+
+	result.mStiffness = safeLog2(1.0f - config.mStiffness);
+	result.mStiffnessMultiplier = safeLog2(config.mStiffnessMultiplier);
+
+	// negative for compression, positive for stretch
+	result.mCompressionLimit = 1.f - 1.f / config.mCompressionLimit;
+	result.mStretchLimit = 1.f - 1.f / config.mStretchLimit;
+
+	return result;
+}