Function: online

Syntax

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

Type

numeric

Returns

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

Parameters

• <point>
  The point to be tested.

• <point1>,<point2>
  Two points defining the line.

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

Examples

if (online(myp,p1,p2)) !Point lies on the line

See Also