1 files changed, 60 insertions, 0 deletions
diff --git a/APEX_1.4/module/clothing/embedded/LowLevelCloth/src/PhaseConfig.cpp b/APEX_1.4/module/clothing/embedded/LowLevelCloth/src/PhaseConfig.cpp
new file mode 100644
index 00000000..310c43d6
--- /dev/null
+++ b/APEX_1.4/module/clothing/embedded/LowLevelCloth/src/PhaseConfig.cpp
@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2008-2015, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * NVIDIA CORPORATION and its licensors retain all intellectual property
+ * and proprietary rights in and to this software, 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.
+ */
+
+// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
+// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.
+
+#include "PhaseConfig.h"
+#include "ApexUsingNamespace.h"
+#include "PsMathUtils.h"
+
+namespace nvidia
+{
+namespace cloth
+{
+PhaseConfig transform(const PhaseConfig&);
+}
+}
+
+using namespace nvidia;
+
+namespace
+{
+float safeLog2(float x)
+{
+	float saturated = PxMax(0.0f, PxMin(x, 1.0f));
+	return saturated ? physx::shdfnd::log2(saturated) : -FLT_MAX_EXP;
+}
+}
+
+cloth::PhaseConfig::PhaseConfig(uint16_t index)
+: mPhaseIndex(index)
+, mPadding(0xffff)
+, mStiffness(1.0f)
+, mStiffnessMultiplier(1.0f)
+, mCompressionLimit(1.0f)
+, mStretchLimit(1.0f)
+{
+}
+
+// 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;
+}