Abstract: Techniques for manipulating a three-dimensional scene displayed via a multi-touch display include receiving information associated with an end-user touching a multi-touch display at one or more screen locations, determining a hand movement based on the information associated with the end-user touching the multi-touch display, determining a command associated with the hand movement, and causing the three-dimensional to be manipulated based on the command and the one or more screen locations. The disclosed techniques advantageously provide more intuitive and user-friendly approaches for interacting with a 3D scene displayed on a computing device that includes a multi-touch display.

Abstract: One embodiment of the present invention is a method that includes receiving a plurality of user gestures that define a sketch of one or more objects, and converting the plurality of user gestures into an abstract representation of the one or more objects. The abstract representation of the one or more objects is convertible, without any additional user input, into an analytically accurate model of the one or more objects.