Ellipse:
Ellipse(XPixelPosition, YPixelPosition, XRadius, YRadius [,Optional LineColour] )
Explanation:
Draws a Ellipse on a GLCD at XPixelPosition, YPixelPosition with a specific vertex of XRadius and YRadius.
The constant GLCD_PROTECTOVERRUN can be added to prevent Ellipses from
re-drawing at the screen edges. Ensure the GLCD_Width and GLCD_HEIGHT
constants are set correctly when using this additional constant.
Example:
#include <glcd.h>
Ellipse(63, 31, 20, 10)
