toSegments method

Implementation

@override
List<Segment> toSegments() {
  if (borderRadius == null) {
    return [
      MoveSegment(end: rect.topLeft),
      LineSegment(end: rect.topRight, tag: SegmentTags.top),
      LineSegment(end: rect.bottomRight, tag: SegmentTags.right),
      LineSegment(end: rect.bottomLeft, tag: SegmentTags.bottom),
      LineSegment(end: rect.topLeft, tag: SegmentTags.left),
      CloseSegment(),
    ];
  } else {
    final tlr = borderRadius!.topLeft;
    final trr = borderRadius!.topRight;
    final brr = borderRadius!.bottomRight;
    final blr = borderRadius!.bottomLeft;
    final signX = rect.width > 0 ? 1 : -1;
    final signY = rect.height > 0 ? 1 : -1;
    final clockwise = signX + signY != 0;

    return [
      MoveSegment(end: rect.topLeft.translate(0, signY * tlr.y)),
      ArcToPointSegment(
          end: rect.topLeft.translate(signX * tlr.x, 0),
          radius: tlr,
          rotation: 0,
          largeArc: false,
          clockwise: clockwise,
          tag: SegmentTags.topLeft),
      LineSegment(
          end: rect.topRight.translate(-signX * trr.x, 0),
          tag: SegmentTags.top),
      ArcToPointSegment(
          end: rect.topRight.translate(0, signY * trr.y),
          radius: trr,
          rotation: 0,
          largeArc: false,
          clockwise: clockwise,
          tag: SegmentTags.topRight),
      LineSegment(
          end: rect.bottomRight.translate(0, -signY * brr.y),
          tag: SegmentTags.right),
      ArcToPointSegment(
          end: rect.bottomRight.translate(-signX * brr.x, 0),
          radius: brr,
          rotation: 0,
          largeArc: false,
          clockwise: clockwise,
          tag: SegmentTags.bottomRight),
      LineSegment(
          end: rect.bottomLeft.translate(signX * blr.x, 0),
          tag: SegmentTags.bottom),
      ArcToPointSegment(
          end: rect.bottomLeft.translate(0, -signY * blr.y),
          radius: blr,
          rotation: 0,
          largeArc: false,
          clockwise: clockwise,
          tag: SegmentTags.bottomLeft),
      LineSegment(
          end: rect.topLeft.translate(0, signY * tlr.y),
          tag: SegmentTags.left),
      CloseSegment(),
    ];
  }
}