Public Member Functions
PX_FORCE_INLINE PxVehicleTireForceParams	transformAndScale (const PxVehicleFrame &srcFrame, const PxVehicleFrame &trgFrame, const PxVehicleScale &srcScale, const PxVehicleScale &trgScale) const

PX_FORCE_INLINE bool	isValid () const

Public Attributes
PxReal	latStiffX
	Tire lateral stiffness is a graph of tire load that has linear behavior near zero load and flattens at large loads. latStiffX describes the minimum normalized load (load/restLoad) that gives a flat lateral stiffness response to load.

PxReal	latStiffY
	Tire lateral stiffness is a graph of tire load that has linear behavior near zero load and flattens at large loads. latStiffY describes the maximum possible value of lateral stiffness that occurs when (load/restLoad) >= latStiffX.

PxReal	longStiff
	Tire Longitudinal stiffness.

PxReal	camberStiff
	Tire camber stiffness.

PxReal	frictionVsSlip [3][2]
	Graph of friction vs longitudinal slip with 3 points.

PxReal	restLoad
	The rest load is the load that develops on the tire when the vehicle is at rest on a flat plane.

PxReal	loadFilter [2][2]
	Tire load variation can be strongly dependent on the time-step so it is a good idea to filter it to give less jerky handling behavior.

Member Data Documentation

◆ camberStiff

PxReal physx::vehicle2::PxVehicleTireForceParams::camberStiff

Tire camber stiffness.

Note: Camber force can be approximated as camberStiff*camberAngle.

Unit: force per radian = mass * length / (time^2)

◆ frictionVsSlip

PxReal physx::vehicle2::PxVehicleTireForceParams::frictionVsSlip[3][2]

Graph of friction vs longitudinal slip with 3 points.

Note: frictionVsSlip[0][0] is always zero.; frictionVsSlip[0][1] is the friction available at zero longitudinal slip.; frictionVsSlip[1][0] is the value of longitudinal slip with maximum friction.; frictionVsSlip[1][1] is the maximum friction.; frictionVsSlip[2][0] is the end point of the graph.; frictionVsSlip[2][1] is the value of friction for slips greater than frictionVsSlip[2][0].; The friction value is computed from the friction vs longitudinal slip graph using linear interpolation.; The friction value computed from the friction vs longitudinal slip graph is used to scale the friction value of the road geometry.; frictionVsSlip[2][0] > frictionVsSlip[1][0] > frictionVsSlip[0][0]; frictionVsSlip[1][1] is typically greater than frictionVsSlip[0][1]; frictionVsSlip[2][1] is typically smaller than frictionVsSlip[1][1]; longitudinal slips > frictionVsSlip[2][0] use friction multiplier frictionVsSlip[2][1]

◆ latStiffX

PxReal physx::vehicle2::PxVehicleTireForceParams::latStiffX

Tire lateral stiffness is a graph of tire load that has linear behavior near zero load and flattens at large loads. latStiffX describes the minimum normalized load (load/restLoad) that gives a flat lateral stiffness response to load.

Note: A value of 0.0 indicates that the tire lateral stiffness is independent of load and will adopt the value latStiffY for all values of tire load.

◆ latStiffY

PxReal physx::vehicle2::PxVehicleTireForceParams::latStiffY

Tire lateral stiffness is a graph of tire load that has linear behavior near zero load and flattens at large loads. latStiffY describes the maximum possible value of lateral stiffness that occurs when (load/restLoad) >= latStiffX.

Unit: force per lateral slip = mass * length / (time^2)

◆ loadFilter

PxReal physx::vehicle2::PxVehicleTireForceParams::loadFilter[2][2]

Tire load variation can be strongly dependent on the time-step so it is a good idea to filter it to give less jerky handling behavior.

Note: Tire load filtering is implemented by linear interpolating a graph containing just two points. The x-axis of the graph is normalized tire load, while the y-axis is the filtered normalized tire load that is to be applied during the tire force calculation.; The normalized load is the force acting downwards on the tire divided by restLoad.; The minimum possible normalized load is zero.; There are two points on the graph: (minNormalisedLoad, minNormalisedFilteredLoad) and (maxNormalisedLoad, maxFilteredNormalisedLoad).; Normalized loads less than minNormalisedLoad have filtered normalized load = minNormalisedFilteredLoad.; Normalized loads greater than maxNormalisedLoad have filtered normalized load = maxFilteredNormalisedLoad.; Normalized loads in-between are linearly interpolated between minNormalisedFilteredLoad and maxFilteredNormalisedLoad.; The tire load applied as input to the tire force computation is the filtered normalized load multiplied by the rest load.; loadFilter[0][0] is minNormalisedLoad; loadFilter[0][1] is minFilteredNormalisedLoad; loadFilter[1][0] is maxNormalisedLoad; loadFilter[1][1] is maxFilteredNormalisedLoad

◆ longStiff

PxReal physx::vehicle2::PxVehicleTireForceParams::longStiff

Tire Longitudinal stiffness.

Note: Longitudinal force can be approximated as longStiff*longitudinalSlip.

Unit: force per longitudinal slip = mass * length / (time^2)

◆ restLoad

PxReal physx::vehicle2::PxVehicleTireForceParams::restLoad

The rest load is the load that develops on the tire when the vehicle is at rest on a flat plane.

Note: The rest load is approximately the product of gravitational acceleration and (sprungMass + wheelMass).

Unit: force = mass * length / (time^2)

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

RavEngine/deps/physx/physx/include/vehicle2/tire/PxVehicleTireParams.h

Public Member Functions

Public Attributes