Capsule constructor

Capsule({ double radiusTop = 1, double radiusBottom = 1, double height = 1, int numSegments = 8, int numHeightSegments = 4, })

Implementation

factory Capsule({
  double radiusTop = 1,
  double radiusBottom = 1,
  double height = 1,
  int numSegments = 8,
  int numHeightSegments = 4
}){
  List<Vector2> ptsTop = [
    Vector2(0, height*0.5+radiusTop),
  ];
  List<Vector2> ptsBottom = [];

  for(int i = 0; i < numHeightSegments-1; i++){
    final theta = ((math.pi/2) / numHeightSegments) * (i + 1)+(2*math.pi+math.pi/2);
    double xt = -math.cos(theta)*radiusTop;
    double yt = height*0.5 + math.sin(theta)*radiusTop;
    ptsTop.add(Vector2(xt, yt));

    double xb = -math.cos(theta)*radiusBottom;
    double yb = -height*0.5 - math.sin(theta)*radiusBottom;
    ptsBottom.insert(0,Vector2(xb, yb));
  }
  ptsTop.add(Vector2(radiusTop, (height*0.5)));
  ptsBottom.add(Vector2(0, -height*0.5-radiusBottom));
  ptsBottom.insert(0,Vector2(radiusBottom, -height*0.5));
  ptsTop.addAll(ptsBottom);

  return Capsule.fromPoints(
    radiusBottom: radiusBottom,
    radiusTop: radiusTop,
    height: height,
    numSegments: numSegments,
    points: ptsTop
  );
}