Map covering region rendering method and related equipment

An overlay and map technology, applied in the field of map overlay area rendering methods and objects in the system, can solve the problems of increased memory space and CPU resource occupation, large map load, high memory and CPU resource occupation, and achieve distribution and utilization. , the effect of reducing resource occupation and reducing consumption

Active Publication Date: 2015-04-08
CHINA MOBILE QUANTONG SYST INTEGRATION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the user operates frequently, the map will continue to work, which will bring a very large load and workload to the map, thereby further increasing the memory space and CPU resource usag

Method used

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  • Map covering region rendering method and related equipment
  • Map covering region rendering method and related equipment
  • Map covering region rendering method and related equipment

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0080] Embodiment 1: When the layer information changes caused by the timing location information push.

[0081] figure 1 A flow chart of a preferred embodiment of a method for rendering a map covering area, such as figure 1 As shown, the method of this embodiment may include:

[0082] figure 2 Is a sequence diagram of a preferred embodiment of a method for rendering a map cover area;

[0083] Figure 4 Is a schematic diagram of the current view of Embodiment 1 of the method for rendering a map cover area of ​​the present invention;

[0084] Timing location information push is a response triggered by the client's timing of sending location requests. This situation is related to the user's subscription operation, and the returned data corresponds to the user's subscription information (unknown information is excluded, if unknown information, an empty array is returned), It has nothing to do with the user's operations on the map. When new regular subscription information comes in, the...

Example Embodiment

[0109] Example 2: Change of horizon layer boundary triggered by map event

[0110] Figure 5 Is a flowchart of Embodiment 2 of the method for rendering a map cover area of ​​the present invention;

[0111] Image 6 Is a sequence diagram of Embodiment 2 of the method for rendering a map cover area of ​​the present invention;

[0112] Figure 7 Is a schematic diagram of the current view of Embodiment 2 of the method for rendering a map cover area of ​​the present invention;

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Abstract

The invention provides a map covering region rendering method and related equipment. The creation and destruction of a covering are managed by defining a focal view range by using a covering dynamic loading rendering technology, so rational distribution utilization of a memory and a computing resource can be realized. The useless covering on the outer side of a browser view range is destructed to realize purposeful partial destruction instead of unified complete destruction, so the occupation of the memory and a CPU (Central Processing Unit) resource in the system is reduced, and meanwhile the destruction of the system is also more flexible. The unloaded covering within the view range of a user is timely loaded, and most authentic visual information is provided for the user while the consumption is reduced.

Description

technical field [0001] The invention relates to the field of electronic maps, in particular to a map overlay area rendering method and objects in the system. Background technique [0002] WEB-GIS (Network Geographic Information System) refers to a geographic information system based on the Internet platform, the client application software adopts the network protocol, and is used on the Internet. It is generally composed of multiple hosts, multiple databases and multiple clients connected to the Internet in a distributed manner. [0003] In Web-GIS applications, all content superimposed or overlaid on the map is collectively referred to as map overlays. Such as annotations, vector graphics elements (including: polylines, polygons and circles), information windows, etc. Overlays have their own geographic coordinates. When manually dragging or zooming the map, they will perform secondary rendering according to the corresponding coordinate position on the map and the pixel co...

Claims

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Application Information

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IPC IPC(8): G06F17/30G06F9/44G06F9/50
CPCG06F16/29G06F16/901
Inventor 牛昆亮曹雪峰孙海涛武海斌沈煜冯振川
Owner CHINA MOBILE QUANTONG SYST INTEGRATION CO LTD
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