How to get the ahead direction on a vehicle?

[conquerors]

btTransform chassisWorldTrans;
m_pPhyMotionState->getWorldTransform(chassisWorldTrans);

btMatrix3x3 CarMat=chassisWorldTrans.getBasis();

CarMat.getEuler(m_fHead ,m_fPitch,m_fBank);

is this right?

[Erwin Coumans]

Code: Select all

int indexForwardAxis = vehicle->getForwardAxis();

const btTransform& chassisTrans = getChassisWorldTransform();

btVector3 forwardW (
		chassisTrans.getBasis()[0][indexForwardAxis],
		chassisTrans.getBasis()[1][indexForwardAxis],
		chassisTrans.getBasis()[2][indexForwardAxis]);

We can add a helper method in the btRaycastVehicle for this forward vector.

Hope this helps,
Erwin

[conquerors]

thanks
I can synchronize view transform with car.