My favorite function

Ever since I started working with Arduinos I was in love with its map function. Map allows you to take a value range and convert it to another. So say you have a sensor giving you a range from 0 to 1024, but you need it from 100 to 255 you can do that. But you can also convert 0 to 1024 into 255 to 0, and it will calculate it correctly as well. So it goes down when the sensor reading goes up. Well I do a lot of sensor readings in flash as well, but actionscript does not have this much needed function. So I made one.

function map(val, min, max, minOut, maxOut){
	var base = val - min;
	var range = max - min;
	var percent = base / range;
	var rangeOut = maxOut - minOut;

	return (percent * rangeOut) + minOut;
}

I also made a constrain function but it is very simple.

function constrain(val, min, max){
	if(val < min){
		return min;
	}else if(val > max){
		return max;
	}else{
		return val;
	}
}

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