PxTolerancesScale Class Reference

Class to define the scale at which simulation runs. Most simulation tolerances are calculated in terms of the values here. More...

#include <PxTolerancesScale.h>

Public Member Functions
PX_INLINE	PxTolerancesScale ()
	constructor sets to default More...
PX_INLINE bool	isValid () const
	Returns true if the descriptor is valid. More...

Public Attributes
PxReal	length
PxReal	mass
PxReal	speed

Detailed Description

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.

Member Data Documentation

PxReal PxTolerancesScale::length

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.

Referenced by isValid(), PxJointLinearLimit::PxJointLinearLimit(), and PxJointLinearLimitPair::PxJointLinearLimitPair().

PxReal PxTolerancesScale::mass

brief

The approximate mass of a length * length * length block. If using metric scale for character sized objects and measuring mass in kilogrammes, 1000 is a good choice.

Referenced by isValid().

PxReal PxTolerancesScale::speed

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.

---

The documentation for this class was generated from the following file:

• PxTolerancesScale.h