I'm putting together a simple script in processing to visualise layout possibilities within the fluid environment of a web page.
I need some help calculating a point on a circle:
The circle is as big as it can be, limited by the width or the visible height of the web browser viewport, whichever is less. A line intersects the circle through its centre from one corner of the viewport/rectangle to the opposite corner.
My question is how can I calculate the x & y coordinates of the line's intersections on the circle's circumference?
 Forgot the link: http://hascanvas.com/tschichold