SEm-Labos/01-WaveformGenerator/WaveformGenerator/hdl/triangleToPolygon_studentVersion.vhd

ARCHITECTURE studentVersion OF triangleToPolygon IS

  signal mySignal : unsigned(bitNb downto 0);
  constant aFullTriangle : unsigned(bitNb downto 0) := (others => '1');

BEGIN

  convert: process(triangle)
  begin
    
    if (('0' & triangle) + ('0' & shift_right(triangle, 1))) < shift_right(aFullTriangle, 3) then

      mySignal <= shift_right(aFullTriangle,3);
      
    elsif (('0' & triangle) + ('0' & shift_right(triangle, 1))) > (shift_right(aFullTriangle, 1) + shift_right('0' & aFullTriangle, 3)) then

      mySignal <= (shift_right(aFullTriangle,1) + shift_right(aFullTriangle,3));

    elsif '1' then
      mySignal <= ('0' & triangle) + ('0' & shift_right(triangle, 1) );

    end if ;

  end process convert;
  
  polygon <= resize(mySignal-shift_right('0' & aFullTriangle,3), bitNb);
END ARCHITECTURE studentVersion;