//
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// CAGradientLayerExtensions.swift
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// SwifterSwift
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//
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// Created by Jay Mehta on 11/10/19.
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// Copyright © 2019 SwifterSwift
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//
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#if !os(watchOS) && !os(Linux) && canImport(QuartzCore)
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import QuartzCore
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extension CAGradientLayer {
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/// SwifterSwift: Creates a CAGradientLayer with the specified colors, location, startPoint, endPoint, and type.
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/// - Parameter colors: An array of colors defining the color of each gradient stop
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/// - Parameter locations: An array of NSNumber defining the location of each
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/// gradient stop as a value in the range [0,1]. The values must be
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/// monotonically increasing. If a nil array is given, the stops are
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/// assumed to spread uniformly across the [0,1] range. When rendered,
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/// the colors are mapped to the output colorspace before being
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/// interpolated. (default is nil)
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/// - Parameter startPoint: start point corresponds to the first gradient stop (I.e. [0,0] is the bottom-corner of the layer, [1,1] is the top-right corner.)
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/// - Parameter endPoint: end point corresponds to the last gradient stop
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/// - Parameter type: The kind of gradient that will be drawn. Currently, the only allowed values are `axial' (the default value), `radial', and `conic'.
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convenience init(colors: [Color], locations: [CGFloat]? = nil, startPoint: CGPoint, endPoint: CGPoint, type: CAGradientLayerType = .axial) {
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self.init()
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self.colors = colors.map { $0.cgColor }
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self.locations = locations?.map { NSNumber(value: Double($0)) }
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self.startPoint = startPoint
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self.endPoint = endPoint
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self.type = type
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}
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}
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#endif
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