setRgba method
Set the RGBA color of a palette entry at index
. If the palette has fewer
channels than are set, the unsupported channels will be ignored.
Implementation
@override
void setRgba(int index, num r, num g, num b, num a) {
index *= numChannels;
data[index] = r.toDouble();
if (numChannels > 1) {
data[index + 1] = g.toDouble();
if (numChannels > 2) {
data[index + 2] = b.toDouble();
if (numChannels > 3) {
data[index + 3] = a.toDouble();
}
}
}
}