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Extended rotation and sharpening of an object viewed from a finite number of angles

  • US 20070236515A1
  • Filed: 04/10/2006
  • Published: 10/11/2007
  • Est. Priority Date: 04/10/2006
  • Status: Active Grant
First Claim
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1. In an application where an object is rotated by sequencing through a finite number of predetermined views from different angles, a method of extended rotation, comprising the following steps:

  • a. providing a first means for specifying a current angle from which to view the object, the current angle comprised of a current colatitude coordinate and a current longitude coordinate;

    b. responsive to the current colatitude coordinate having a value greater than approximately 180 degrees, displaying an up-side-down orientation of the view nearest to having a colatitude substantially 360 degrees minus the current colatitude and a longitude substantially 180 degrees different from the current longitude; and

    c. responsive to the current colatitude coordinate having a value less than approximately 180 degrees, displaying a right-side-up orientation of the view nearest to having a colatitude substantially equal to the current colatitude and a longitude substantially equal to the current longitude;

    whereby the amount of possible rotation of the object is extended by displaying the back side of the object up-side-down when a user rotates over the top and displaying the front side right-side-up again when the user continues to rotate over the original bottom providing an appearance of continuous rotation.

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