@technobuddha > library > Geometry > Line Segment

Function: lineIntersection()

function lineIntersection(
   a: LineSegment, 
   b: LineSegment, 
   extend: boolean): undefined | null | Cartesian;

Defined in: line-intersection.ts:21

Calculates the intersection point of two line segments.

Parameters

Parameter	Type	Default value	Description
a	LineSegment	undefined	The first line segment.
b	LineSegment	undefined	The second line segment.
extend	boolean	false	If true, treats the segments as infinite lines; if false, only considers the actual segments.

Returns

undefined | null | Cartesian

The intersection point as a Point object if the segments (or lines, if extend is true) intersect. Returns undefined if the lines are parallel or coincident. Returns null if the intersection is outside the segments and extend is false.

Example

lineIntersection(
  { x0: 0, y0: 0, x1: 4, y1: 4 },
  { x0: 0, y0: 4, x1: 4, y1: 0 }
); // { x: 2, y: 2 }