公开(公告)号：US09542724B1

公开(公告)日：2017-01-10

申请号：US14153951

申请日：2014-01-13

Applicant: GOOGLE INC.

Inventor： John Rosasco ,  Travis McPhail ,  Paul Vincent Byrne ,  Daniel Jared Epstein ,  Jim Brooks

IPC: G06T17/05 ,  G06T3/40 ,  G06T15/80 ,  G06T11/00

CPC classification number: G06T3/4007 ,  G06T11/00 ,  G06T11/203 ,  G06T11/40 ,  G06T15/04 ,  G06T15/503 ,  G06T15/80 ,  G06T17/05 ,  G06T2210/36 ,  G06T2210/62

Abstract: To provide smoothly scaleable map features on interactive digital maps, a first and a second sets of style parameters for rendering a map feature at a first zoom level and a second zoom level, respectively, are received. The first and second sets of style parameters are provided to a vertex shader. The vertex shader is configured to interpolate the first set of style parameters and the second set of style parameters to generate an interpolated set of style parameters for a certain zoom level between the first zoom level and the second zoom level, and render the map feature at the certain zoom level in accordance with the interpolated set of style parameters.

Abstract translation: 为了在交互式数字地图上提供平稳可缩放的地图特征，接收分别用于在第一缩放级别和第二缩放级别渲染地图特征的第一和第二组风格参数。 第一和第二组样式参数提供给顶点着色器。 顶点着色器被配置为内插第一组样式参数和第二组样式参数，以生成用于第一缩放级别和第二缩放级别之间的特定缩放级别的内插样式参数集合，并且将地图特征呈现在 根据插值的样式参数组，某些缩放级别。

公开(公告)号：US09672656B1

公开(公告)日：2017-06-06

申请号：US14971801

申请日：2015-12-16

Applicant: GOOGLE INC.

Inventor： Travis McPhail

IPC: G06T17/05 ,  G06T15/20 ,  G06T15/04 ,  G06T15/80 ,  G06T17/20 ,  G06T19/20

CPC classification number: G06T15/20 ,  G01C21/3638 ,  G06T15/04 ,  G06T15/80 ,  G06T17/05 ,  G06T17/20 ,  G06T19/20 ,  G06T2210/36 ,  G06T2215/16 ,  G06T2219/2024

Abstract: To render features on a digital map, a position and orientation of a virtual camera relative to a plane of the digital map is determined. The plane is tilted so that a plane of a viewport of the digital map is not parallel to the plane of the digital map, where the viewport delimiting a view of the digital map. Map features are selected for inclusion in the view of the digital map in accordance with the determined position and orientation of the virtual camera. A level-of-detail (LOD) is determined for each of the map features in accordance with a distance between the virtual camera and the map feature. The map features are rendered, using a rendering engine, in accordance with the determined LODs.

公开(公告)号：US20160307294A1

公开(公告)日：2016-10-20

申请号：US15093581

申请日：2016-04-07

Applicant: GOOGLE INC.

Inventor： Travis McPhail

IPC: G06T3/40 ,  G06T15/04 ,  G06T15/80

Abstract: To smoothly transition between zoom levels for patterns displayed along paths (such as roads and other paths) depicted on interactive digital maps, instances of a graphic element (such as a dash, a dot, a two-way arrow, etc.) may be arranged along a path. The displayed instances may appear to increase or decrease in density as zoom levels change. For example, a plurality of instances of the graphic element may be displayed when displaying a digital map at a first zoom level. A first subset of the plurality of instances of the graphic element may be displayed when displaying the digital map at a second zoom level. The transition from displaying the plurality of instances to displaying the first subset of the plurality of instances may be gradual. In some embodiments, the size and/or transparency of the displayed instances may change in accordance with changed zoom levels.

Abstract translation: 为了平滑地在交互式数字地图上描绘的路径（例如道路和其他路径）上显示的图案的缩放级别之间过渡，图形元素（例如破折号，点，双向箭头等）的实例可以是 沿着路径排列。 显示的实例可能会随着缩放级别的变化而增加或减小密度。 例如，当以第一缩放级别显示数字地图时，可以显示图形元素的多个实例。 当以第二缩放级别显示数字地图时，可以显示图形元素的多个实例的第一子集。 从显示多个实例到显示多个实例的第一子集的转换可以是渐进的。 在一些实施例中，显示的实例的大小和/或透明度可以根据改变的缩放级别而改变。