Function: onplane

Syntax

onplane (<point>,<point1>,<point2> {,<num>})

Type

numeric

Returns

Whether a 3-D point lies on a plane: one if it does, zero if it doesn’t.

Parameters

• <point>
  The point to be tested.

• <point1>
  Any point on the plane.

• <point2>
  A 3-D vector defining the normal to the plane.

• <num>
  A user-supplied closeness tolerance. If omitted, a tolerance of 0.0000001 is used.

Examples

if (onplane(myp,p1,(0,1,0))) !Point is on plane

See Also