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Navigation system for a 3D virtual scene

  • US 10,504,285 B2
  • Filed: 08/28/2008
  • Issued: 12/10/2019
  • Est. Priority Date: 09/26/2007
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • determining that a user holds a pointing device in an activated state to place a tool in an active state, wherein the pointing device controls a position of a user-controlled cursor;

    determining that the user-controlled cursor is over a portion of a model within a three-dimensional (3D) scene;

    in response to determining that the user-controlled cursor is over the portion of the model, automatically displaying a center point sphere that represents a point within the 3D scene that is a projection of the user-controlled cursor onto the model within the 3D scene, wherein the center point sphere comprises a 3D geometric object; and

    performing one or more operations relative to the point represented by the center point sphere to change the position of a view associated with the 3D scene.

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