public ForceAndTorque CalculateForces(VehiclePart part, float angle, Vector3 vehicleWorldVelocity, Vector3 vehicleWorldAngularVelocity)
{
Vector3 worldAC = GetAdjustedWorldAerodynamicCenter(part);
Vector3 relativePosition = worldAC - part.Vehicle.Rb.worldCenterOfMass;
Vector3 partWorldVelocity = RigidbodyExtensions.GetChildVelocity(part.Vehicle.Rb.worldCenterOfMass, vehicleWorldVelocity, vehicleWorldAngularVelocity, worldAC);
if (part is IAerodynamicPart)
{
Vector3 tangentualWorldVelocity = partWorldVelocity - vehicleWorldVelocity;
WorldTangentualVelocity = tangentualWorldVelocity;
}
Vector3 lift = GetLiftVector(part, angle, partWorldVelocity);
Vector3 drag = GetDragVector(part, angle, partWorldVelocity);
Vector3 aerodynamicForce = lift + drag;
Vector3 torque = Vector3.Cross(relativePosition, aerodynamicForce); // τ = r × F.
return(new ForceAndTorque(aerodynamicForce, torque));
}
