Python generates & rotates counter clockwise the grid, angular shows the magic!. The initial grid size is 4 columns by 4 rows. Let's use imaginary iframes. Iterate the rows and cols of the grid, ...

Let's use imaginary iframes. Save the position of the coords for each iframe in an array. Make a copy of each iframe and rotate the copy. Using this formula: (n rotations / total_cells_in_frame) * ...