•By clicking the second point with respect to the first point.
Figure 1 Clicking the second point
•By clicking the straight line of the body.
Figure 2 Navigation of the straight line
•By clicking one of axes of the marker.
Figure 3 Navigation of the axis of the marker
•By clicking the plane of body. The z axis of revolute joint will be defined as the plane normal direction of body.
Figure 4 Navigation of the plane of the body