public static btRigidBody upcast(SWIGTYPE_p_btCollisionObject colObj)
{
IntPtr cPtr = BulletDynamicsPINVOKE.btRigidBody_upcast__SWIG_0(SWIGTYPE_p_btCollisionObject.getCPtr(colObj));
btRigidBody ret = (cPtr == IntPtr.Zero) ? null : new btRigidBody(cPtr, false);
return ret;
}