• PointOnPlane1[cnum, point, axis] constrains point to lie within a plane specified by axis. The axis is typically given as a Modeler3D Plane object.
• PointOnPlane1 constrains one degree of freedom.
• PointOnPlane1[cnum, point, axis, dist] constrains point to lie dist units away from the plane specified by axis, in the direction of the plane's positive normal.
• See also: DirectedDistance1, SetConstraints, SysCon.