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    Style Sheet Driven Virtual Camera for Defining a Navigation Presentation
    12.
    发明申请
    Style Sheet Driven Virtual Camera for Defining a Navigation Presentation 审中-公开

    公开(公告)号：US20170356754A1

    公开(公告)日：2017-12-14

    申请号：US15274907

    申请日：2016-09-23

    Applicant: Apple Inc.

    Inventor： Nathan L. Fillhardt ,  Thomas Davie ,  Justin M. Strawn ,  Christopher F. Marrin

    IPC: G01C21/36 ,  G06T17/05 ,  G06T19/00 ,  G06T15/20

    CPC classification number: G01C21/3667 ,  G01C21/3415 ,  G01C21/3608 ,  G01C21/3635 ,  G01C21/3638 ,  G01C21/3676 ,  G06F3/14 ,  G06F3/147 ,  G06T15/20 ,  G06T17/05 ,  G06T19/003 ,  G08G1/096827 ,  G08G1/0969 ,  G09G2380/10 ,  G10L15/22 ,  G10L2015/223 ,  H04N7/183 ,  H04N7/188

    Abstract: Some embodiments of the invention provide several novel methods for generating a navigation presentation that displays a device navigating a route on a map. The method of some embodiments uses a virtual camera that, based on detected changes in the navigation context, dynamically modifies the way it captures portions of the map to produce different navigation scenes in the navigation presentation. To generate the navigation scenes, the method of some embodiments (1) identifies different sets of attributes that describe the different navigation contexts at different times during the navigation presentation, and (2) uses these different sets of attributes to identify different styles for operating the virtual camera. In some embodiments, the method uses an identified style to specify the virtual camera's positional attributes, which, in turn, define the portions of the map that the virtual camera identifies for rendering to produce several navigation scenes for a period of time (e.g., until the navigation context changes, or until the navigation presentation ends when the navigation context does not change again). During the navigation presentation, each time the navigation context changes, the identified set of attributes may change. This change, in turn, may cause the method of some embodiments to select a new style for operating the virtual camera. When the style for operating the virtual camera changes, the method of some embodiments modifies the way the virtual camera captures the portion of the map to render.

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