INNER CODE UNIT · Dart

dX

vintage/scratcher · lib/widgets.dart:224

    final dX = center.dx - point.dx;
    final dY = center.dy - point.dy;
    final multi = dX * dX + dY * dY;
    final distance = sqrt(multi).roundToDouble();

    return distance <= radius;
  }

  void _addPoint(Offset position) {
    // Ignore when same point is reported multiple times in a row
    if (_lastPosition == position) {
      return;
    }
    _lastPosition = position;

    ui.Offset? point = position;
    final scratchPoint = ScratchPoint(point, widget.brushSize);

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