def __init__(self, a, b, groove_a, groove_b, anchr2):
"""a and b are the two bodies to conenct,
groove_a and groove_b is two points or vectors or something.
anchr2 is an anchor point
"""
self._a = a
self._b = b
self._joint = cp.cpGrooveJointNew(a._body, b._body, groove_a, groove_b, anchr2)
def __init__(self, a, b, groove_a, groove_b, anchr2):
"""The groove goes from groove_a to groove_b on body a, and the pivot
is attached to anchr2 on body b. All coordinates are body local.
"""
self._constraint = cp.cpGrooveJointNew(a._body, b._body, groove_a, groove_b, anchr2)
self._ccontents = self._constraint.contents
self._pjc = cp.cast(self._constraint, ct.POINTER(cp.cpGrooveJoint)).contents
self._a = a
self._b = b