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//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// * Neither the name of NVIDIA CORPORATION nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
// OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Copyright (c) 2018 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_PHYSICS_NX_CLOTH_FABRIC
#define PX_PHYSICS_NX_CLOTH_FABRIC
/** \addtogroup cloth
@{
*/
#if PX_DOXYGEN == 0
namespace nvidia
{
#endif
/**
\brief Describe type of phase in cloth fabric.
\see PxClothFabric for an explanation of concepts on phase and set.
*/
struct PxClothFabricPhaseType
{
enum Enum
{
eINVALID, //!< invalid type
eVERTICAL, //!< resists stretching or compression, usually along the gravity
eHORIZONTAL, //!< resists stretching or compression, perpendicular to the gravity
eBENDING, //!< resists out-of-plane bending in angle-based formulation
eSHEARING, //!< resists in-plane shearing along (typically) diagonal edges,
eCOUNT // internal use only
};
};
/**
\brief References a set of constraints that can be solved in parallel.
\see PxClothFabric for an explanation of the concepts on phase and set.
*/
struct PxClothFabricPhase
{
PxClothFabricPhase(PxClothFabricPhaseType::Enum type =
PxClothFabricPhaseType::eINVALID, uint32_t index = 0);
/**
\brief Type of constraints to solve.
*/
PxClothFabricPhaseType::Enum phaseType;
/**
\brief Index of the set that contains the particle indices.
*/
uint32_t setIndex;
};
PX_INLINE PxClothFabricPhase::PxClothFabricPhase(
PxClothFabricPhaseType::Enum type, uint32_t index)
: phaseType(type)
, setIndex(index)
{}
/**
\brief References all the data required to create a fabric.
\see PxPhysics.createClothFabric(), PxClothFabricCooker.getDescriptor()
*/
class PxClothFabricDesc
{
public:
/** \brief The number of particles needed when creating a PxCloth instance from the fabric. */
uint32_t nbParticles;
/** \brief The number of solver phases. */
uint32_t nbPhases;
/** \brief Array defining which constraints to solve each phase. See #PxClothFabric.getPhases(). */
const PxClothFabricPhase* phases;
/** \brief The number of sets in the fabric. */
uint32_t nbSets;
/** \brief Array with an index per set which points one entry beyond the last constraint of the set. See #PxClothFabric.getSets(). */
const uint32_t* sets;
/** \brief Array of particle indices which specifies the pair of constrained vertices. See #PxClothFabric.getParticleIndices(). */
const uint32_t* indices;
/** \brief Array of rest values for each constraint. See #PxClothFabric.getRestvalues(). */
const float* restvalues;
/** \brief Size of tetherAnchors and tetherLengths arrays, needs to be multiple of nbParticles. */
uint32_t nbTethers;
/** \brief Array of particle indices specifying the tether anchors. See #PxClothFabric.getTetherAnchors(). */
const uint32_t* tetherAnchors;
/** \brief Array of rest distance between tethered particle pairs. See #PxClothFabric.getTetherLengths(). */
const float* tetherLengths;
/**
\brief constructor sets to default.
*/
PX_INLINE PxClothFabricDesc();
/**
\brief (re)sets the structure to the default.
*/
PX_INLINE void setToDefault();
/**
\brief Returns true if the descriptor is valid.
\return True if the current settings are valid
*/
PX_INLINE bool isValid() const;
};
PX_INLINE PxClothFabricDesc::PxClothFabricDesc()
{
setToDefault();
}
PX_INLINE void PxClothFabricDesc::setToDefault()
{
memset(this, 0, sizeof(PxClothFabricDesc));
}
PX_INLINE bool PxClothFabricDesc::isValid() const
{
return (nbParticles && nbPhases && phases && restvalues && nbSets
&& sets && indices && (!nbTethers || (tetherAnchors && tetherLengths)));
}
#if PX_DOXYGEN == 0
} // namespace nvidia
#endif
/** @} */
#endif
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