add polygon signal

01-WaveformGenerator/WaveformGenerator/hdl/triangleToPolygon_studentVersion.vhd

@@ -1,4 +1,27 @@
 ARCHITECTURE studentVersion OF triangleToPolygon IS
+
+  signal mySignal : unsigned(bitNb downto 0);
+  constant aFullTriangle : unsigned(bitNb downto 0) := (others => '1');
+
 BEGIN
-  polygon <= (others => '0');
+
+  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;

01-WaveformGenerator/WaveformGenerator/hdl/triangleToPolygon_studentVersion.vhd.bak

@@ -0,0 +1,13 @@
+ARCHITECTURE studentVersion OF triangleToPolygon IS
+
+  signal mySignal : unsigned(bitNb downto 0);
+
+BEGIN
+
+  convert: process(triangle)
+  begin
+    mySignal <= triangle + shift_left(triangle, 1);
+  end process convert;
+  
+  polygon <= mySignal;
+END ARCHITECTURE studentVersion;