transformValues method

@override void transformValues()

Transforms the x and y values to screen coordinates.

Implementation

@override
void transformValues() {
  if (x.isNaN || y.isNaN || radius.isNaN) {
    segmentRect = null;
    _oldSegmentRect = null;
    points.clear();
    return;
  }

  points.clear();
  final double pixelX = series.pointToPixelX(x, y);
  final double pixelY = series.pointToPixelY(x, y);
  final Offset center = Offset(pixelX, pixelY);
  final double size = radius * 2.0;
  segmentRect = Rect.fromCircle(center: center, radius: size);
  _oldSegmentRect ??= Rect.fromCircle(center: center, radius: 0.0);
  points.add(center);
}