Put framework in place for dealing with graphs in 3 dimensions

drawutils.cpp

@@ -52,7 +52,7 @@ bool DrawUtils::draw(SDL_Surface* dest, SDL_Surface* drawable, int x, int y,
     return true;
 }
 
-#include "debug.h"
+
 void DrawUtils::draw_line(SDL_Surface* dest, Sint16 x1, Sint16 y1, Sint16 x2, Sint16 y2, Uint16 width, Uint32 colour)
 {
     float dx, dy, len;
@@ -60,7 +60,7 @@ void DrawUtils::draw_line(SDL_Surface* dest, Sint16 x1, Sint16 y1, Sint16 x2, Si
 
     SDL_Rect pen;
 
-    len = MathUtils::distance(x1,y1,x2,y2);
+    len = MathUtils::distance(x1, y1, 0, x2, y2, 0);
 
     // dx and dy represent the amount we move
     // each step in our drawing loop