float3
OpenSteer::SteerLibrary::
xxxsteerForSeek (const AbstractVehicle& v, const float3& target)
{
    const float3 offset = float3_subtract(target, make_float3(v.position()));
	const float3 desiredVelocity = float3_truncateLength(offset, v.maxSpeed());
    return float3_subtract(desiredVelocity, v.velocity());
}