blendColor function

Color blendColor(Color from, Color to, double t, { required bool hasDarkBackground, })

Blends two colors into a single interpolated color.

This reuses the same RGB interpolation path as blend1D and blend2D. If either color cannot be represented as RGB, the closer endpoint is returned instead of attempting a lossy interpolation.

Implementation

Color blendColor(
  Color from,
  Color to,
  double t, {
  required bool hasDarkBackground,
}) {
  if (t <= 0.0) return from;
  if (t >= 1.0) return to;

  final fromRgb = _toRgb(from, hasDarkBackground: hasDarkBackground);
  final toRgb = _toRgb(to, hasDarkBackground: hasDarkBackground);
  if (fromRgb == null || toRgb == null) {
    return t < 0.5 ? from : to;
  }

  return _colorFromRgb(
    cp.Rgb(
      _lerp(fromRgb.r, toRgb.r, t),
      _lerp(fromRgb.g, toRgb.g, t),
      _lerp(fromRgb.b, toRgb.b, t),
    ),
  );
}