class SimplifyBearing implements SimplifyInterface (View source)

Simplify Polyline

Methods

__construct(float $bearingAngle)

SimplifyBearing constructor.

simplify(Polyline $polyline)

Simplifies the given polyline

Details

__construct(float $bearingAngle)

SimplifyBearing constructor.

Parameters

float $bearingAngle

Polyline simplify(Polyline $polyline)

Simplifies the given polyline

  1. calculate the bearing angle between the first two points p1 and p2: b1
  2. calculate the bearing angle between the next two points p2 and p3: b2
  3. calculate the difference between b1 and b2: deltaB; if deltaB is smaller than the threshold angle, remove the middle point p2
  4. start again at (1.) as long as the polyline contains more points

Parameters

Polyline $polyline

Return Value

Polyline