colorOffset function
Add the red
, green
, blue
and alpha
values to the src
image
colors, a per-channel brightness.
Implementation
Image colorOffset(Image src,
{num red = 0,
num green = 0,
num blue = 0,
num alpha = 0,
Image? mask,
Channel maskChannel = Channel.luminance}) {
for (final frame in src.frames) {
for (final p in frame) {
final msk = mask?.getPixel(p.x, p.y).getChannelNormalized(maskChannel);
if (msk == null) {
p
..r += red
..g += green
..b += blue
..a += alpha;
} else {
p
..r = mix(p.r, p.r + red, msk)
..g = mix(p.g, p.g + green, msk)
..b = mix(p.b, p.b + blue, msk)
..a = mix(p.a, p.a + alpha, msk);
}
}
}
return src;
}