Function: onarc

Syntax

onarc (<point>,<point1>,<point2>,<point3>{,<num>})

Type

numeric

Returns

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

Parameters

• <point>
  The point to be tested.

• <point1>,<point2>,<point3>
  Three point definition of the arc.

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

Examples

if (onarc(myp,p1,p2,p3)) !Point lies on the arc

See Also