isRectDark method
Returns whether the given rectangular region is considered dark.
Coordinates are given in percent and must be between 0 and 1. Throws ArgumentError if the coordinates are out of range.
Implementation
bool isRectDark(
Point<double> topLeftCorner,
Point<double> bottomRightCorner, {
double? threshold,
}) {
return _getDarkness(
linearRgbInRect(topLeftCorner, bottomRightCorner),
threshold,
);
}