`Color.init(hue:saturation:brightness:opacity:)` 中的色调值范围是多少？

Question

The Color initializer init(hue:saturation:brightness:opacity:) is undocumented.

我想我可以有把握地假设 saturation、brightness 和 opacity 归一化到 0...1 的范围，其中超出该范围的值仅对广色域显示器有效。

但我无法猜测hue。是0...1、0...τ 还是0...360？

Answer 1

很高兴，很容易快速测试。

我将这段代码扔进了一个新的 SwiftUI 应用程序，然后查看了预览以查看结果。结果，是0...1！

import SwiftUI

struct ContentView: View {
    var body: some View {
        VStack(spacing: 0) {
            Color(hue: 0/6, saturation: 1, brightness: 1)
            Color(hue: 1/6, saturation: 1, brightness: 1)
            Color(hue: 2/6, saturation: 1, brightness: 1)
            Color(hue: 3/6, saturation: 1, brightness: 1)
            Color(hue: 4/6, saturation: 1, brightness: 1)
            Color(hue: 5/6, saturation: 1, brightness: 1)
            Color(hue: 6/6, saturation: 1, brightness: 1)
        }
    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}