CONTROLLER FOR INTERFACING WITH A COMPUTING PROGRAM USING POSITION, ORIENTATION, OR MOTION

A method for determining the position of a controller device, comprises: receiving dimensions of the display input by a user of the computer-based system; capturing successive images of the display at the controller device; determining a position of the controller device relative to the display based on the dimensions of the display and a perspective distortion of the display in the captured successive images of the display; providing the determined position of the controller to the computer-based system to interface with the interactive program to cause an action by the interactive program.