lerp method

@override PieChartData lerp(BaseChartData a, BaseChartData b, double t)

Lerps a BaseChartData based on t value, check Tween.lerp.

Implementation

@override
PieChartData lerp(BaseChartData a, BaseChartData b, double t) {
  if (a is PieChartData && b is PieChartData) {
    return PieChartData(
      borderData: FlBorderData.lerp(a.borderData, b.borderData, t),
      centerSpaceColor: Color.lerp(a.centerSpaceColor, b.centerSpaceColor, t),
      centerSpaceRadius: lerpDoubleAllowInfinity(
        a.centerSpaceRadius,
        b.centerSpaceRadius,
        t,
      ),
      pieTouchData: b.pieTouchData,
      sectionsSpace: lerpDouble(a.sectionsSpace, b.sectionsSpace, t),
      startDegreeOffset:
          lerpDouble(a.startDegreeOffset, b.startDegreeOffset, t),
      sections: lerpPieChartSectionDataList(a.sections, b.sections, t),
    );
  } else {
    throw Exception('Illegal State');
  }
}