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/*
* Copyright (c) 2008-2017, 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 "SwClothData.h"
#include "SwCloth.h"
#include "SwFabric.h"
#include "Simd4f.h"
#include "PsUtilities.h"
using namespace nvidia;
cloth::SwClothData::SwClothData(SwCloth& cloth, const SwFabric& fabric)
{
mNumParticles = uint32_t(cloth.mCurParticles.size());
mCurParticles = array(cloth.mCurParticles.front());
mPrevParticles = array(cloth.mPrevParticles.front());
const float* center = array(cloth.mParticleBoundsCenter);
const float* extent = array(cloth.mParticleBoundsHalfExtent);
for(uint32_t i = 0; i < 3; ++i)
{
mCurBounds[i] = center[i] - extent[i];
mCurBounds[i + 3] = center[i] + extent[i];
}
// avoid reading uninitialized data into mCurBounds, even though it's never used.
mPrevBounds[0] = 0.0f;
mConfigBegin = cloth.mPhaseConfigs.empty() ? 0 : &cloth.mPhaseConfigs.front();
mConfigEnd = mConfigBegin + cloth.mPhaseConfigs.size();
mPhases = &fabric.mPhases.front();
mNumPhases = uint32_t(fabric.mPhases.size());
mSets = &fabric.mSets.front();
mNumSets = uint32_t(fabric.mSets.size());
mRestvalues = &fabric.mRestvalues.front();
mNumRestvalues = uint32_t(fabric.mRestvalues.size());
mIndices = &fabric.mIndices.front();
mNumIndices = uint32_t(fabric.mIndices.size());
float stiffnessExponent = cloth.mStiffnessFrequency * cloth.mPrevIterDt * 0.69314718055994531f; // logf(2.0f);
mTethers = fabric.mTethers.begin();
mNumTethers = uint32_t(fabric.mTethers.size());
mTetherConstraintStiffness = 1.0f - exp(stiffnessExponent * cloth.mTetherConstraintLogStiffness);
mTetherConstraintScale = cloth.mTetherConstraintScale * fabric.mTetherLengthScale;
mStartMotionConstraints = cloth.mMotionConstraints.mStart.size() ? array(cloth.mMotionConstraints.mStart.front()) : 0;
mTargetMotionConstraints =
!cloth.mMotionConstraints.mTarget.empty() ? array(cloth.mMotionConstraints.mTarget.front()) : 0;
mMotionConstraintStiffness = 1.0f - exp(stiffnessExponent * cloth.mMotionConstraintLogStiffness);
mStartSeparationConstraints =
cloth.mSeparationConstraints.mStart.size() ? array(cloth.mSeparationConstraints.mStart.front()) : 0;
mTargetSeparationConstraints =
!cloth.mSeparationConstraints.mTarget.empty() ? array(cloth.mSeparationConstraints.mTarget.front()) : 0;
mParticleAccelerations = cloth.mParticleAccelerations.size() ? array(cloth.mParticleAccelerations.front()) : 0;
mStartCollisionSpheres = cloth.mStartCollisionSpheres.empty() ? 0 : array(cloth.mStartCollisionSpheres.front());
mTargetCollisionSpheres =
cloth.mTargetCollisionSpheres.empty() ? mStartCollisionSpheres : array(cloth.mTargetCollisionSpheres.front());
mNumSpheres = uint32_t(cloth.mStartCollisionSpheres.size());
mCapsuleIndices = cloth.mCapsuleIndices.empty() ? 0 : &cloth.mCapsuleIndices.front();
mNumCapsules = uint32_t(cloth.mCapsuleIndices.size());
mStartCollisionPlanes = cloth.mStartCollisionPlanes.empty() ? 0 : array(cloth.mStartCollisionPlanes.front());
mTargetCollisionPlanes =
cloth.mTargetCollisionPlanes.empty() ? mStartCollisionPlanes : array(cloth.mTargetCollisionPlanes.front());
mNumPlanes = uint32_t(cloth.mStartCollisionPlanes.size());
mConvexMasks = cloth.mConvexMasks.empty() ? 0 : &cloth.mConvexMasks.front();
mNumConvexes = uint32_t(cloth.mConvexMasks.size());
mStartCollisionTriangles = cloth.mStartCollisionTriangles.empty() ? 0 : array(cloth.mStartCollisionTriangles.front());
mTargetCollisionTriangles = cloth.mTargetCollisionTriangles.empty() ? mStartCollisionTriangles
: array(cloth.mTargetCollisionTriangles.front());
mNumTriangles = uint32_t(cloth.mStartCollisionTriangles.size()) / 3;
mVirtualParticlesBegin = cloth.mVirtualParticleIndices.empty() ? 0 : array(cloth.mVirtualParticleIndices.front());
mVirtualParticlesEnd = mVirtualParticlesBegin + 4 * cloth.mVirtualParticleIndices.size();
mVirtualParticleWeights = cloth.mVirtualParticleWeights.empty() ? 0 : array(cloth.mVirtualParticleWeights.front());
mNumVirtualParticleWeights = uint32_t(cloth.mVirtualParticleWeights.size());
mEnableContinuousCollision = cloth.mEnableContinuousCollision;
mCollisionMassScale = cloth.mCollisionMassScale;
mFrictionScale = cloth.mFriction;
mSelfCollisionDistance = cloth.mSelfCollisionDistance;
mSelfCollisionStiffness = 1.0f - exp(stiffnessExponent * cloth.mSelfCollisionLogStiffness);
mSelfCollisionIndices = cloth.mSelfCollisionIndices.empty() ? 0 : cloth.mSelfCollisionIndices.begin();
mNumSelfCollisionIndices = mSelfCollisionIndices ? cloth.mSelfCollisionIndices.size() : mNumParticles;
mRestPositions = cloth.mRestPositions.size() ? array(cloth.mRestPositions.front()) : 0;
mSleepPassCounter = cloth.mSleepPassCounter;
mSleepTestCounter = cloth.mSleepTestCounter;
}
void cloth::SwClothData::reconcile(SwCloth& cloth) const
{
cloth.setParticleBounds(mCurBounds);
cloth.mSleepTestCounter = mSleepTestCounter;
cloth.mSleepPassCounter = mSleepPassCounter;
}
void cloth::SwClothData::verify() const
{
// checks needs to be run after the constructor because
PX_ASSERT(!mNumCapsules ||
mNumSpheres > *nvidia::maxElement(&mCapsuleIndices->first, &(mCapsuleIndices + mNumCapsules)->first));
PX_ASSERT(!mNumConvexes || (1u << mNumPlanes) - 1 >= *nvidia::maxElement(mConvexMasks, mConvexMasks + mNumConvexes));
}
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