Description
This applet demonstrates the working of a plane-sweep algorithm in finding the intersection points among a set of lines.

• Click and drag mouse to draw a set of lines inside the applet window.
• Start: After you have drawn a set of lines, click this button to start the plane-sweep algorithm.
  A vertical line sweeps the plane from the first to the last point using an event queue that containts all points sorted by x-coordinate. The points of intersection are shown in red colour.
• Refresh: Click this button to refresh applet window and to start a new input.