Created
February 20, 2018 12:02
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Converts a value in a range to another range in Swift 4.0
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| import Foundation | |
| func convert<T: FloatingPoint>(value: T, inRange: ClosedRange<T>, toRange: ClosedRange<T>) -> T { | |
| let oldRange = inRange.upperBound - inRange.lowerBound | |
| let newRange = toRange.upperBound - toRange.lowerBound | |
| return (((value - inRange.lowerBound) * newRange) / oldRange) + toRange.lowerBound | |
| } | |
| func convert<T: SignedInteger>(value: T, inRange: ClosedRange<T>, toRange: ClosedRange<T>) -> T { | |
| let oldRange = inRange.upperBound - inRange.lowerBound | |
| let newRange = toRange.upperBound - toRange.lowerBound | |
| return (((value - inRange.lowerBound) * newRange) / oldRange) + toRange.lowerBound | |
| } | |
| func convert<T: FloatingPoint>(value: T, inRange: Range<T>, toRange: Range<T>) -> T { | |
| let oldRange = inRange.upperBound - inRange.lowerBound | |
| let newRange = toRange.upperBound - toRange.lowerBound | |
| return (((value - inRange.lowerBound) * newRange) / oldRange) + toRange.lowerBound | |
| } | |
| func convert<T: SignedInteger>(value: T, inRange: Range<T>, toRange: Range<T>) -> T { | |
| let oldRange = inRange.upperBound - inRange.lowerBound | |
| let newRange = toRange.upperBound - toRange.lowerBound | |
| return (((value - inRange.lowerBound) * newRange) / oldRange) + toRange.lowerBound | |
| } | |
| convert(value: 200.0, inRange: 0.0..<200.0, toRange: 0.0..<5.0) | |
| convert(value: 200.0, inRange: 0.0...200.0, toRange: 0.0...5.0) | |
| convert(value: 200, inRange: 0..<200, toRange: 0..<5) | |
| convert(value: 200, inRange: 0...200, toRange: 0...5) |
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