Posted By

vamapaull on 02/23/12

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Last Edited at 02/23/12 11:40pm

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Convert values within a range to values within another range

/ Published in: ActionScript 3

Iâ€™m sharing with you a little utility that I find myself using a lot lately. This utility is a value convertor that you can use in those times when you need to make a volume slider or something similar where youâ€™ll need to change a value and a value range.

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package com.vamapaull.utils
{	
	public class ValueConvertor
	{
		public static function convertRange(originalStart:Number, 
							originalEnd:Number, 
							newStart:Number, 
							newEnd:Number, 
							value:Number):Number
		{
			var originalRange:Number = originalEnd - originalStart;
			var newRange:Number = newEnd - newStart;
			var ratio:Number = newRange / originalRange;
			var newValue:Number = value * ratio;
			var finalValue:Number = newValue + newStart;
			return finalValue;
		}
	}
}