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mortenjust/map value from one range to another.swift

Created January 16, 2016 19:26
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Processing-like map()
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map value from one range to another.swift
func rangeMap(whereIs value:Double, low1:Double, low2:Double, high1:Double, high2:Double) -> Double {
return low2 + (value - low1) * (high2 - low2) / (high1 - low1)
}
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