fromPoly static method

XmlElement fromPoly(XmlElement polylineTag, { bool isPolyline = false, })

Converts a polygon or polyline element into a path element. If converting a polyline, make sure to pass the isPolyline attribute as true.

Implementation

static XmlElement fromPoly(
  XmlElement polylineTag, {
  bool isPolyline = false,
}) {
  final filterAttributes = [AttributeName.points];

  final points = polylineTag.getAttribute(AttributeName.points);
  final pointsArrayRaw = points != null ? points.split(',') : <String>[];
  final pointsArray = <String>[];

  for (var i = 0; i < pointsArrayRaw.length; i++) {
    final split = pointsArrayRaw[i].split(' ');
    for (var j = 0; j < split.length; j++) {
      if (split[j].isNotEmpty) {
        pointsArray.add(split[j]);
      }
    }
  }

  if (pointsArray.length.isEven) {
    final buffer = StringBuffer();
    for (var i = 0; i < pointsArray.length; i += 2) {
      buffer
        ..write(i == 0 ? 'M ' : ' L ')
        ..write('${_stod(pointsArray[i])} ${_stod(pointsArray[i + 1])}');
    }
    if (!isPolyline) {
      buffer.write(' Z');
    }
    return _buildPath(
      buffer.toString(),
      polylineTag,
      filterAttributes,
    );
  } else {
    return XmlElement(XmlName(ElementName.g));
  }
}