74 lines
2.4 KiB
Swift
74 lines
2.4 KiB
Swift
/*
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* DynamicColor
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*
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* Copyright 2015-present Yannick Loriot.
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* http://yannickloriot.com
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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*/
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#if os(iOS) || os(tvOS) || os(watchOS)
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import UIKit
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#elseif os(OSX)
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import AppKit
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#endif
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/**
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Clips the values in an interval.
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Given an interval, values outside the interval are clipped to the interval
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edges. For example, if an interval of [0, 1] is specified, values smaller than
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0 become 0, and values larger than 1 become 1.
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- Parameter v: The value to clipped.
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- Parameter minimum: The minimum edge value.
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- Parameter maximum: The maximum edgevalue.
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*/
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internal func clip<T: Comparable>(_ v: T, _ minimum: T, _ maximum: T) -> T {
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return max(min(v, maximum), minimum)
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}
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/**
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Returns the absolute value of the modulo operation.
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- Parameter x: The value to compute.
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- Parameter m: The modulo.
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*/
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internal func moda(_ x: CGFloat, m: CGFloat) -> CGFloat {
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return (x.truncatingRemainder(dividingBy: m) + m).truncatingRemainder(dividingBy: m)
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}
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/**
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Rounds the given float to a given decimal precision.
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- Parameter x: The value to round.
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- Parameter m: The precision. Default to 10000.
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*/
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internal func roundDecimal(_ x: CGFloat, precision: CGFloat = 10000.0) -> CGFloat {
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return CGFloat(Int(round(x * precision))) / precision
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}
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internal func roundToHex(_ x: CGFloat) -> UInt32 {
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guard x > 0 else { return 0 }
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let rounded: CGFloat = round(x * 255.0)
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return UInt32(rounded)
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}
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