How calculate aspect ratio from dimensions of image

Question

I am using Jcrop for cropping image so i want to calculate ratio of height and width of image but problem is that there is no limit of maximum height and width.

when user upload image then i want to get height,width ratio so on cropping it should be crop with respect to aspect ratio for example

Width=835, Height=625 aspect ratio would be 167: 125

i have calculated this ratio from following link Aspect ratio calculator

I don't want to cacalute new height,width. I just want to calculate ratio 167: 125

How can i do this?

Possible duplicate [Calculate a Ratio in C#](http://stackoverflow.com/questions/527860/calculate-a-ratio-in-c-sharp) — Dustin Kingen, Jun 17 '13 at 17:38
not sure where you got 107:90. I put those numbers into that site and got 167:125. Regardless, just follow the math on the site you linked and you'll be able to get any image ratio. — musicmunky, Jun 17 '13 at 17:47

score 7 · Answer 1 · edited Oct 24 '18 at 15:48

I think you are looking for HCF (Highest Common Factor) but the ratio (Width:835,Height:625) will be 167:125. Here is the function by which you can calculate HCF between 2 numbers.

 private int FindHCF(int m, int n)
 {
     int temp, remainder;
     if (m < n)
     {
         temp = m;
         m = n;
         n = temp;
     }
     while (true)
     {
         remainder = m % n;
         if (remainder == 0)
             return n;
         else
             m = n;
         n = remainder;
     }
 }

So here is the rest of the code

int hcf = FindHcf(835, 625);
int factorW = 835 / hcf;
int factorH = 625 / hcf;

How calculate aspect ratio from dimensions of image

1 Answers1