createLocationMarkerIcon3 function

Future<BitmapDescriptor> createLocationMarkerIcon3(double size, Color color)

Implementation

Future<BitmapDescriptor> createLocationMarkerIcon3(double size, Color color) async {
  final PictureRecorder pictureRecorder = PictureRecorder();
  final Canvas canvas = Canvas(pictureRecorder);

  final double centerX = size / 2;
  final double centerY = size / 2;
  final double radius = size / 2;
  final double distanceFromCenter = size * 0.3;
  const double markerWidth = 5.0;
  final double markerLength = size * 0.4;

  final Paint circlePaint = Paint()..color = color;
  canvas.drawCircle(Offset(centerX, centerY), radius, circlePaint);

  const double angle1 = math.pi / 4; // 45 derece
  const double angle2 = 3 * math.pi / 4; // 135 derece

  final double startX1 = centerX + distanceFromCenter * math.cos(angle1);
  final double startY1 = centerY + distanceFromCenter * math.sin(angle1);
  final double endX1 = startX1 + markerLength * math.cos(angle1);
  final double endY1 = startY1 + markerLength * math.sin(angle1);

  final double startX2 = centerX + distanceFromCenter * math.cos(angle2);
  final double startY2 = centerY + distanceFromCenter * math.sin(angle2);
  final double endX2 = startX2 + markerLength * math.cos(angle2);
  final double endY2 = startY2 + markerLength * math.sin(angle2);

  final Paint markerPaint = Paint()
    ..color = color
    ..strokeWidth = markerWidth
    ..strokeCap = StrokeCap.round;
  canvas.drawLine(Offset(startX1, startY1), Offset(endX1, endY1), markerPaint);
  canvas.drawLine(Offset(startX2, startY2), Offset(endX2, endY2), markerPaint);

  final ui.Picture picture = pictureRecorder.endRecording();
  final ui.Image image = await picture.toImage(size.toInt(), size.toInt());
  final ByteData? byteData = await image.toByteData(format: ui.ImageByteFormat.png);
  final Uint8List data = byteData!.buffer.asUint8List();

  return BitmapDescriptor.fromBytes(data);
}