Class ClippingEdge

Abstract helper class used to implement the Sutherland-Hodgman clipping algorithm.

remarks: Concrete implementation of this class are used to clip a polygon against one edge of a bounding box.
internal

Hierarchy

ClippingEdge

Index

Methods

Methods

clipPolygon

clipPolygon(polygon: Vector2[], extent: number): Vector2[]

- Defined in @here/harp-geometry/lib/ClipPolygon.ts:57
Clip the polygon against this clipping edge.

Parameters
- polygon: Vector2[]
  
  Clip the polygon against this edge.
- extent: number
  
  The extent of the bounding box.
Returns Vector2[]

The clipped polygon.

Abstract computeIntersection

computeIntersection(a: Vector2, b: Vector2, extent: number): ClippedVertex

- Defined in @here/harp-geometry/lib/ClipPolygon.ts:47
Computes the intersection of a line and this clipping edge.

remarks

Specialization of line-line intersection.

Parameters
- a: Vector2
  
  A point of the segment to clip.
- b: Vector2
  
  A point of the segment to clip.
- extent: number
  
  The extent of the bounding box.
Returns ClippedVertex

Abstract inside

inside(point: Vector2, extent: number): boolean

- Defined in @here/harp-geometry/lib/ClipPolygon.ts:34
Tests if the given point is inside this clipping edge.

Parameters
- point: Vector2
  
  A point of the polygon.
- extent: number
  
  The extent of the bounding box.
Returns boolean

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