generatePath method

Path generatePath({ required Rect rect, })

Implementation

Path generatePath({required Rect rect}) {
  final Path path = Path();

  final width = rect.width;
  final height = rect.height;

  final double diagonalAngleRadAbs = this.angle.angleRadians.abs();
  final bool isDirectionLeft = this.direction == DiagonalDirection.Left;
  final double perpendicularHeight = (rect.width * tan(diagonalAngleRadAbs));

  switch (this.position) {
    case DiagonalPosition.Bottom:
      if (isDirectionLeft) {
        path.moveTo(0, 0);
        path.lineTo(width, 0);
        path.lineTo(width, height - perpendicularHeight);
        path.lineTo(0, height);
        path.close();
      } else {
        path.moveTo(width, height);
        path.lineTo(0, height - perpendicularHeight);
        path.lineTo(0, 0);
        path.lineTo(width, 0);
        path.close();
      }
      break;
    case DiagonalPosition.Top:
      if (isDirectionLeft) {
        path.moveTo(width, height);
        path.lineTo(width, 0 + perpendicularHeight);
        path.lineTo(0, 0);
        path.lineTo(0, height);
        path.close();
      } else {
        path.moveTo(width, height);
        path.lineTo(width, 0);
        path.lineTo(0, 0 + perpendicularHeight);
        path.lineTo(0, height);
        path.close();
      }
      break;
    case DiagonalPosition.Right:
      if (isDirectionLeft) {
        path.moveTo(0, 0);
        path.lineTo(width, 0);
        path.lineTo(width - perpendicularHeight, height);
        path.lineTo(0, height);
        path.close();
      } else {
        path.moveTo(0, 0);
        path.lineTo(width - perpendicularHeight, 0);
        path.lineTo(width, height);
        path.lineTo(0, height);
        path.close();
      }
      break;
    case DiagonalPosition.Left:
      if (isDirectionLeft) {
        path.moveTo(0 + perpendicularHeight, 0);
        path.lineTo(width, 0);
        path.lineTo(width, height);
        path.lineTo(0, height);
        path.close();
      } else {
        path.moveTo(0, 0);
        path.lineTo(width, 0);
        path.lineTo(width, height);
        path.lineTo(0 + perpendicularHeight, height);
        path.close();
      }
      break;
  }
  return path;
}