Location\Polyline::addPoint PHP Method

    public function addPoint(Coordinate $point)
    {
        $this->points[] = $point;
    }

 /**
  * 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
  *
  * @param Polyline $polyline
  *
  * @return Polyline
  */
 public function simplify(Polyline $polyline)
 {
     $counterPoints = $polyline->getNumberOfPoints();
     if ($counterPoints < 3) {
         return clone $polyline;
     }
     $result = new Polyline();
     $bearingCalc = new BearingEllipsoidal();
     $points = $polyline->getPoints();
     $index = 0;
     // add the first point to the resulting polyline
     $result->addPoint($points[$index]);
     do {
         $index++;
         // preserve the last point of the original polyline
         if ($index === $counterPoints - 1) {
             $result->addPoint($points[$index]);
             break;
         }
         $bearing1 = $bearingCalc->calculateBearing($points[$index - 1], $points[$index]);
         $bearing2 = $bearingCalc->calculateBearing($points[$index], $points[$index + 1]);
         $bearingDifference = min(fmod($bearing1 - $bearing2 + 360, 360), fmod($bearing2 - $bearing1 + 360, 360));
         if ($bearingDifference > $this->bearingAngle) {
             $result->addPoint($points[$index]);
         }
     } while ($index < $counterPoints);
     return $result;
 }