Expression 5: floor left parenthesis, "x" plus 1 , right parenthesis times 360 times 1 eighth left brace, 0 less than "x" less than 8 , right bracefloorx+1·360·180<x<8
5
Rotating 0.8125 radians per block. It's not exactly 45°, but it's close enough to still hit all of the windows.
6
Expression 7: floor left parenthesis, "x" plus 1 , right parenthesis times 360 times StartFraction, 0.8 1 2 5 Over 2 times pi , EndFraction left brace, 0 less than "x" less than 8 , right bracefloorx+1·360·0.81252·π0<x<8