zbw_rig.py 文件源码

def closest_pt_on_mesh_rotation(point, mesh, *args):
# TODO - generalize for various orientations, and various rotation orders
    """
    takes a point (can be name of transform or iterable(3) of rotations and a poly mesh and gives the rotation [rot
    order xyz] (for
    aim along y) align to surface of
    the xform at that point
    """
    if isinstance(point, basestring):
        if isType(point, "transform"):
            cmds.select(point, r=True)
            ptPos = cmds.xform(point, ws=True, q=True, rp=True)
            name = point
        else:
            cmds.warning("zbw_rig.closest_pt_on_mesh_position: the string you gave me isn't a transform")
            return ()
    elif isinstance(point, (list, tuple)):
        if len(point) == 3:
            ptPos = point
            name = mesh
        else:
            cmds.warning("zbw_rig.closest_pt_on_mesh_position: there are not the right number of entries in the "
                         "list you gave me")

    # get the rotations to align to normal at this point
    loc = cmds.spaceLocator()
    CPOMesh = closest_pt_on_mesh_position(point, mesh)
    cmds.xform(loc, ws=True, t=CPOMesh)
    aimVec = (0, 1, 0)
    upVec = (0, 1, 0)
    nc = cmds.normalConstraint(mesh, loc, aim=aimVec, upVector=upVec)
    rot = cmds.xform(loc, ws=True, q=True, ro=True)
    cmds.delete(nc, loc)
    return (rot)