I'm making a small pie chart, and I'd like to have each entry in the chart get lighter and lighter the smaller the pie slices get. I have to generate an array of UIColor
to color the chart.
Here's what I have right now:
for i in 0..<entries.count {
let percent = 1.0 - (CGFloat(i - 1)/CGFloat(entries.count))
dataSet.colors.append(UIColor.systemPurple.withAlphaComponent(percent))
}
I'd like the colors in the chart to be more like this: (sorry I just quick made it in google sheets as an example)
Any ideas?
Try with this solution.
var initialAlpha = 1.0
for i in 0..<entries.count {
dataSet.colors.append(UIColor.systemPurple.withAlphaComponent(initialAlpha))
initialAlpha -= 0.1
}
You can also change the difference value of 0.1 to any fraction value let's say 0.15 or 0.2 etc. according to your requirement.