tolerance? get the calculation tolerance.
intersect_with_line: (p1(x,y,z), p2(x,y,z)) perform geometric intersection with the line defined using the six floating point values p1(x,y,z) and p2(x,y,z).
intersection? return non-zero if intersection has occurred.
intersection_point? return the x-y-z coordinates of the line intersection point.
intersection_pcoord? return the parametric coordinate along the intersecting line.
intersection_normal? return the geometric normal at the intersection point
id? return the id of the display_data primitive that was intersected (i.e., primitives are lines, polygons, and/or triangle_strips).
type? return the type of the display_data primitive that was intersected (i.e., "line", "polygon", or "triangle_strip").
free! delete the object and release memory back to the system.releas