I found other example in forum and play with it, it worked if shape layer is center of comp. Please take a look attachment. This comp conversion makes me really lost. Any help?
Ah yes, im too focus on that, and I forgot about burger effect. This can be achieved using offset before mosaic and after mosaic with – differences offset.
I tried 1st calculation and turn out, it gives 57.7% for X scale and I use it for Y as well because it uses the same values 100. And the triangle doesn’t fit to the rectangle. Where I did wrong in this calculation?
I found 2nd method is easier to understand and it worked.