Return a color based on percentage. 0% is Red and 100% is Green
| static func colorForPercent(_ percentage: Double) -> UIColor { | |
| switch percentage { | |
| case 0..<0.33: | |
| return UIColor(hex: 0xE02020) | |
| case 0.33..<0.66: | |
| return UIColor(hex: 0xFA6400) | |
| case 0.66..<1: | |
| return UIColor(hex: 0xF7B500) | |
| case 1: | |
| return UIColor(hex: 0x6DD400) | |
| default: | |
| fatalError("Bad Input: percentage must satisfy 0 <= percentage <= 1") | |
| } | |
| } |
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