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13 lines
616 B
JavaScript
13 lines
616 B
JavaScript
/**
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* Scale a value that is known to be in a range to a new range
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* for instance map(50,0,100,1000,2000) will return 1500 as 50 is halfway between 0 and 100 and 1500 is halfway through 1000 and 2000
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* @param {Number} value value to map
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* @param {Number} oldMin minimum value of the number
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* @param {Number} oldMax maximum value of the number
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* @param {Number} newMin minimum value of the output
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* @param {Number} newMax maximum value of the output
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* @returns
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*/
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export function map(value, oldMin, oldMax, newMin, newMax) {
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return ((value - oldMin) / (oldMax - oldMin)) * (newMax - newMin) + newMin;
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} |