Forked from phobeo/javascript aspect ratio calculation (with GCD)
Created
May 17, 2017 17:30
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javascript aspect ratio calculation algorithm (take the GCD and divide both elements of resolution)
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/* euclidean GCD (feel free to use any other) */ | |
function gcd(a,b) {if(b>a) {temp = a; a = b; b = temp} while(b!=0) {m=a%b; a=b; b=m;} return a;} | |
/* ratio is to get the gcd and divide each component by the gcd, then return a string with the typical colon-separated value */ | |
function ratio(x,y) {c=gcd(x,y); return ""+(x/c)+":"+(y/c)} | |
/* eg: | |
> ratio(320,240) | |
"4:3" | |
> ratio(360,240) | |
"3:2" | |
*/ |
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