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Two-dimensional vector rendering method and device

A two-dimensional vector and vector data technology, applied in the direction of editing/combining graphics or text, drawing from basic elements, etc., can solve the problems of high energy consumption, low data rendering efficiency, difficult to reflect real-time changes in the map, etc., to achieve low data volume, improve rendering efficiency

Active Publication Date: 2018-07-31
城市生活(北京)信息有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the disadvantage of this method is that the image rendering is generated in the background, so the update cycle of the map is long, it is difficult to reflect some real-time changes of the map, and the pre-rendered images using this method are graded and cannot Realize arbitrary zooming of the map
Some maps use the mobile terminal to render vector data in real time. Due to the use of real-time rendering, the data rendering efficiency is low and the energy consumption is high.

Method used

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  • Two-dimensional vector rendering method and device
  • Two-dimensional vector rendering method and device

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Embodiment 1

[0040] see figure 1 It is a schematic flowchart of a two-dimensional vector rendering method provided by Embodiment 1 of the present invention, the method includes the following steps:

[0041] S11. Perform grouping processing on the two-dimensional vector data to be rendered to obtain grouped data;

[0042] Specifically, the rendering of two-dimensional vector data is performed in a grouped and layered manner, because the objects to be drawn are all vector data, such as points, lines, surfaces, etc., and the grouping is to group the objects to be drawn. That is, according to different display requirements, it can be divided into background group, road group and virtual object group. The background group includes background surface, green space, water and building surface, etc.; and underground passages, etc. Simultaneously, when rendering according to the capping relationship, draw the background group, then draw the road group, and finally draw the virtual group, wherein t...

Embodiment 2

[0059] Corresponding to the two-dimensional vector rendering method disclosed in the first embodiment of the present invention, the second embodiment of the present invention also provides a two-dimensional vector rendering device, see image 3 , the device consists of:

[0060] The grouping module 1 is used for grouping the two-dimensional vector data to be rendered to obtain grouped data;

[0061] The processing module 2 is used to preprocess the grouped data according to the characteristics of the grouped data to obtain corresponding triangle faces;

[0062] The stroke module 3 is configured to perform stroke processing on the grouped corresponding triangular patches, and draw vector data.

[0063] Correspondingly, the processing module 2 includes:

[0064] The grouping unit 21 is configured to divide the grouped data into data groups containing preset features according to the features of the grouped data, wherein the preset features are lines, textured lines, and surfac...

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Abstract

The invention discloses a two-dimensional vector rendering method and device, and the method comprises the steps: carrying out the grouping processing of to-be-rendered two-dimensional vector data, and obtaining grouped data; carrying out the preprocessing of the grouped data according to the features of the grouped data, and obtaining a corresponding triangular patch; obtaining the stroke width and expanding direction through calculation, carrying out the stroke processing of the corresponding triangular patch after grouping, and carrying out the drawing of the vector data. The method achieves the purpose of improving the rendering efficiency.

Description

technical field [0001] The present invention relates to the technical field of electronic maps, in particular to a mobile terminal two-dimensional vector rendering method and device. Background technique [0002] With the popularization of mobile Internet technology, the application of electronic maps is becoming more and more extensive. When displaying an electronic map on a mobile terminal, since there are many types of elements that need to be displayed in the map, including lines, planes, icons, text, etc., in a two-dimensional electronic map, it is necessary to support the display styles of various elements. In order to support different display styles of various elements, some maps use offline rendering of all map pictures, and then draw pictures directly on the mobile terminal. However, the disadvantage of this method is that the image rendering is generated in the background, so the update cycle of the map is long, it is difficult to reflect some real-time changes o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T11/20G06T11/60
CPCG06T11/20G06T11/60
Inventor 马延朋
Owner 城市生活(北京)信息有限公司
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