Line of Sight Demo
* Use the Camera slider to move the location of the camara.
* Use the mouse to move the pixel in the rendering window. The pixel will turn red when the line of sight intersects the sphere.
* If you check "Trace On" and move the pixel, you will get a simulation of the image of the sphere being drawn on the rendering window. Use the arrow keys to scan the pixel horizontally or vertically across the rending window.
* Move the sphere by moving the center with the mouse or entering the coordinates in the textbox. The radius can be changed via the textbox.
* The size of the rendering window can be changed with the slider.
(Based on original concept by Kevin Cox, Bentley University)