XRadius          1468 core/gui_draw.c void draw_ellipse(coord CX, coord CY, unsigned int XRadius, unsigned int YRadius, color cl, int flags)
XRadius          1476 core/gui_draw.c     TwoASquare = 2*XRadius*XRadius;
XRadius          1478 core/gui_draw.c     X = XRadius;
XRadius          1480 core/gui_draw.c     XChange = YRadius*YRadius*(1-2*XRadius);
XRadius          1481 core/gui_draw.c     YChange = XRadius*XRadius;
XRadius          1483 core/gui_draw.c     StoppingX = TwoBSquare*XRadius;
XRadius          1514 core/gui_draw.c     YChange = XRadius*XRadius*(1-2*YRadius);