iterate a 2d array in a circular manner

[kidi3]

Is it even possible and if so then how?
how do i iterate a 2d array such that at each angle degree I output one strip, located on that angle showed.. ex.

for 0 degrees will # be outputted.

 __  __ __ __ __
|    |   |    |   |    |
|    |   |#  |   |    | 
|__|__|__|__|__| 
|    |   |    |   |    |
|    |   |#  |   |    |
|__|__|__|__|__| 
|   |    |    |   |    |
|   |    |    |   |    |
|__|__|__|__|__|

and so on for different different degrees.. the question, is how do compute the array position for the different angles.. for example for 45 degrees and so on..

 

[K33rg4t3]

use trigonometry and cast floats to ints?

 

[kidi3]

well.. the problem is how?

I quite sure that the math is simple, but can't get my head around it..