Space-Project/dependencies/physx-4.1/include/common/PxTolerancesScale.h

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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:
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// contributors may be used to endorse or promote products derived
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//
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// Copyright (c) 2008-2019 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_SCALE_H
#define PX_SCALE_H
/** \addtogroup common
@{
*/
#include "common/PxPhysXCommonConfig.h"
#if !PX_DOXYGEN
namespace physx
{
#endif
class PxPhysics;
/**
\brief Class to define the scale at which simulation runs. Most simulation tolerances are
calculated in terms of the values here.
\note if you change the simulation scale, you will probablly also wish to change the scene's
default value of gravity, and stable simulation will probably require changes to the scene's
bounceThreshold also.
*/
class PxTolerancesScale
{
public:
/** brief
The approximate size of objects in the simulation.
For simulating roughly human-sized in metric units, 1 is a good choice.
If simulation is done in centimetres, use 100 instead. This is used to
estimate certain length-related tolerances.
*/
PxReal length;
/** brief
The typical magnitude of velocities of objects in simulation. This is used to estimate
whether a contact should be treated as bouncing or resting based on its impact velocity,
and a kinetic energy threshold below which the simulation may put objects to sleep.
For normal physical environments, a good choice is the approximate speed of an object falling
under gravity for one second.
*/
PxReal speed;
/**
\brief constructor sets to default
*/
PX_INLINE PxTolerancesScale();
/**
\brief Returns true if the descriptor is valid.
\return true if the current settings are valid (returns always true).
*/
PX_INLINE bool isValid() const;
};
PX_INLINE PxTolerancesScale::PxTolerancesScale():
length(1.0f),
speed(10.0f)
{
}
PX_INLINE bool PxTolerancesScale::isValid() const
{
return length>0.0f;
}
#if !PX_DOXYGEN
} // namespace physx
#endif
/** @} */
#endif