| This is how most existing
drawing programs let you draw circles and
ellipses. Click and drag to draw ellipse. The ellipse appears inside
the drag rectangle (shown in blue), so the mouse
pointer doesn't actually touch the ellipse. Hold shift key to make
circles. |
This is our improved
method. Click and drag to draw ellipse. The mouse pointer is
always on
the ellipse. Hold the Shift key to draw a circle, and the
mouse is still on the shape. NOTE: The blue line shows the
line from the starting click point to the current mouse position. |