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29
30
31#ifndef PX_SCALE_H
32#define PX_SCALE_H
33
34/** \addtogroup common
35 @{
36*/
37
38#include "common/PxPhysXCommonConfig.h"
39
40#if !PX_DOXYGEN
41namespace physx
42{
43#endif
44
45class PxPhysics;
46
47/**
48\brief Class to define the scale at which simulation runs. Most simulation tolerances are
49calculated in terms of the values here.
50
51\note if you change the simulation scale, you will probablly also wish to change the scene's
52default value of gravity, and stable simulation will probably require changes to the scene's
53bounceThreshold also.
54*/
55
56class PxTolerancesScale
57{
58public:
59
60 /** brief
61 The approximate size of objects in the simulation.
62
63 For simulating roughly human-sized in metric units, 1 is a good choice.
64 If simulation is done in centimetres, use 100 instead. This is used to
65 estimate certain length-related tolerances.
66 */
67 PxReal length;
68
69 /** brief
70 The typical magnitude of velocities of objects in simulation. This is used to estimate
71 whether a contact should be treated as bouncing or resting based on its impact velocity,
72 and a kinetic energy threshold below which the simulation may put objects to sleep.
73
74 For normal physical environments, a good choice is the approximate speed of an object falling
75 under gravity for one second.
76 */
77 PxReal speed;
78
79 /**
80 \brief constructor sets to default
81 */
82 PX_INLINE PxTolerancesScale();
83
84 /**
85 \brief Returns true if the descriptor is valid.
86 \return true if the current settings are valid (returns always true).
87 */
88 PX_INLINE bool isValid() const;
89
90};
91
92PX_INLINE PxTolerancesScale::PxTolerancesScale():
93 length(1.0f),
94 speed(10.0f)
95 {
96 }
97
98PX_INLINE bool PxTolerancesScale::isValid() const
99{
100 return length>0.0f;
101}
102
103#if !PX_DOXYGEN
104} // namespace physx
105#endif
106
107/** @} */
108#endif
109

source code of qtquick3dphysics/src/3rdparty/PhysX/include/common/PxTolerancesScale.h