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eustace

Member

Registered: 2015-06-25

Posts: 1

a map() function

This is a simple bit of code, but it helps to have it pre-written and tested rather then typing it in when you need it and getting the sign wrong.  It takes a value, then maps that value from one range of real numbers to another range.  There is a check for division-by-zero, which returns zero.

Expand///Map(input, old_max, old_min, new_max, new_min)
 
var inputValue, oldMax, oldMin, newMax, newMin;
 
inputValue = argument0;
oldMax = argument1;
oldMin = argument2;
newMax = argument3;
newMin = argument4;
 
if (!(oldMax - oldMin = 0))
{
    return (((inputValue - oldMin)/(oldMax - oldMin))*(newMax - newMin)) + newMin;
}
else return 0;

xot

Administrator

Registered: 2007-08-18

Posts: 1,240

Re: a map() function

Thanks for posting this. Someone else has already submitted something like this, I think. I'll see how they compare, maybe combine them. I'll be making a couple of minor changes but this looks good.

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