25 lines
771 B
Swift
25 lines
771 B
Swift
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import Foundation
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import SwiftUI
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extension Color {
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func blend(to other: Color, intensity: CGFloat = 0.5) -> Color {
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Color(UIColor(self).blend(to: UIColor(other), intensity: intensity))
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}
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}
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extension UIColor {
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func blend(to other: UIColor, intensity: CGFloat = 0.5) -> UIColor {
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let l2 = max(0.0, min(1.0, intensity))
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let l1 = 1 - l2
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var (r1, g1, b1, a1): (CGFloat, CGFloat, CGFloat, CGFloat) = (0, 0, 0, 0)
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var (r2, g2, b2, a2): (CGFloat, CGFloat, CGFloat, CGFloat) = (0, 0, 0, 0)
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getRed(&r1, green: &g1, blue: &b1, alpha: &a1)
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other.getRed(&r2, green: &g2, blue: &b2, alpha: &a2)
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return UIColor(red: l1*r1 + l2*r2, green: l1*g1 + l2*g2, blue: l1*b1 + l2*b2, alpha: l1*a1 + l2*a2)
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}
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}
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