color_along_gradient.dart

/// Get the color from a gradient at a specific position
  Color? colorAlongGradient({
    required List<Color> colors,
    List<double>? stops,
    required double position,
  }) {
    stops ??= List.generate(colors.length, (index) => index * (1 / (colors.length-1)));

    for (var s = 0; s < stops.length - 1; s++) {
      final leftStop = stops[s], rightStop = stops[s + 1];
      final leftColor = colors[s], rightColor = colors[s + 1];
      if (position <= leftStop) {
        return leftColor;
      } else if (position < rightStop) {
        final sectionT = (position - leftStop) / (rightStop - leftStop);
        return Color.lerp(leftColor, rightColor, sectionT);
      }
    }
    return colors.last;
  }