minMax function
Find the minimum and maximum color value in the image. Returns a list as [min, max].
Implementation
List<num> minMax(Image image) {
var first = true;
num min = 0;
num max = 0;
for (final p in image) {
for (var c in p) {
if (first || c < min) {
min = c;
}
if (first || c > max) {
max = c;
}
}
first = false;
}
return [min, max];
}