drawDashedLine method

void drawDashedLine({ required Canvas canvas, required Offset p1, required Offset p2, required int dashWidth, required int dashSpace, required Paint paint, })

Implementation

void drawDashedLine(
    {required Canvas canvas,
    required Offset p1,
    required Offset p2,
    required int dashWidth,
    required int dashSpace,
    required Paint paint}) {
  // Get normalized distance vector from p1 to p2
  var dx = p2.dx - p1.dx;
  var dy = p2.dy - p1.dy;
  final magnitude = sqrt(dx * dx + dy * dy);
  dx = dx / magnitude;
  dy = dy / magnitude;

  // Compute number of dash segments
  final steps = magnitude ~/ (dashWidth + dashSpace);

  var startX = p1.dx;
  var startY = p1.dy;

  for (int i = 0; i < steps; i++) {
    final endX = startX + dx * dashWidth;
    final endY = startY + dy * dashWidth;
    canvas.drawLine(Offset(startX, startY), Offset(endX, endY), paint);
    startX += dx * (dashWidth + dashSpace);
    startY += dy * (dashWidth + dashSpace);
  }
}