1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
|
/*
* 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.
#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
|