CN103021259B - The rendering intent of map movement and system - Google Patents
The rendering intent of map movement and system Download PDFInfo
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- CN103021259B CN103021259B CN201210535914.9A CN201210535914A CN103021259B CN 103021259 B CN103021259 B CN 103021259B CN 201210535914 A CN201210535914 A CN 201210535914A CN 103021259 B CN103021259 B CN 103021259B
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Abstract
The present invention discloses a kind of rendering intent of map movement, comprising: obtain the map that need show, judge whether the described map that need show has overlapping with the map of current display; If there is no overlap, then load data corresponding to the described map that need show and play up, showing the described map that need show; If there is overlap, then retains data overlapping in the map of described current display, load in the described map that need show and play up after non-overlapping data, show the described map that need show.The present invention accordingly also discloses a kind of rendering system of map movement.The present invention can accelerate the rendering speed of map, and map can quickly and smoothly mobile display, and the experience of map fast browsing is better.
Description
Technical field
The present invention relates to a kind of rendering intent of map movement, and a kind of rendering system of map movement.
Background technology
In traditional display wall technology, for showing the map of appointed area, the general rendering intent adopting double buffering, by image data corresponding for appointed area is rendered in rear buffering, flip displays is in window.In the process browsed, the region of display is needed constantly to change, then need constantly the image data in new region to be rendered in rear buffering, in the process of the movement continued, all regions in rear buffering all need again to play up, in display wall system, window is very large, need the pixel playing up millions, in the process of map continuous moving, have and to be significantly interrupted and unsmooth.Even if do not consider the acquisition process of image data, resource spent in render process and time, the experience of the fast browsing of map was very poor too much, was difficult to reach the level and smooth mobile fast of map.
Summary of the invention
Based on this, the invention provides a kind of rendering intent and system of map movement, can accelerate the rendering speed of map, map can quickly and smoothly mobile display, and the experience of map fast browsing is better.
A rendering intent for map movement, comprises the steps:
The map that acquisition need show, judges whether the described map that need show has overlapping with the map of current display;
If there is no overlap, then load data corresponding to the described map that need show and play up, showing the described map that need show;
If there is overlap, then retains data overlapping in the map of described current display, load in the described map that need show and play up after non-overlapping data, show the described map that need show;
Wherein, the map that described acquisition need show, judges whether the described map that need show has overlapping step specifically to comprise with the map of current display:
First pixel coordinate on map four summits that acquisition need show;
Obtain second pixel coordinate on map four summits of current display;
Judge whether the described map that need show has overlapping with the map of current display according to described first pixel coordinate and described second pixel coordinate;
If there is overlap, calculate overlapping range and the described zero lap scope that need show map according to described first pixel coordinate and described second pixel coordinate.
A rendering system for map movement, comprises and obtains judge module, the first loaded and displayed module and the second loaded and displayed module;
Described acquisition judge module, for obtaining the map that need show, judges whether the described map that need show has overlapping with the map of current display;
If described first loaded and displayed module is used for not having overlap, then loads data corresponding to the described map that need show and play up, showing the described map that need show;
If described second loaded and displayed module is used for there is overlap, then retains data overlapping in the map of described current display, load in the described map that need show and play up after non-overlapping data, show the described map that need show;
Wherein, described acquisition judge module comprises the first acquisition module, the second acquisition module, judge module and computing module;
Described first acquisition module is for obtaining first pixel coordinate on map four summits that need show;
Described second acquisition module is for obtaining second pixel coordinate on map four summits of current display;
Described judge module is used for judging whether the described map that need show has overlapping with the map of current display according to described first pixel coordinate and described second pixel coordinate;
If described computing module is used for there is overlap, calculate overlapping range and the described zero lap scope that need show map according to described first pixel coordinate and described second pixel coordinate.
The rendering intent of map movement of the present invention and system, consider a large amount of overlapping region that map may exist between two two field pictures in moving process, after getting the map that need show, first contrast with the map of current display, judged whether lap; When finding that there is overlap, make full use of the map datum of the current display that video memory stores, the total data of map to be shown need not be loaded, what greatly reduce map in moving process plays up pressure, the rendering speed of map can be accelerated, map can quickly and smoothly mobile display, and the experience of map fast browsing is better; The data played up needed for map moves are more, utilize the present invention to carry out the effect of map smoothly movement further obviously, are particularly suitable for the fast browsing of massive map data and show the large window display fields such as wall.
Accompanying drawing explanation
Fig. 1 is the rendering intent schematic flow sheet in one embodiment of map movement of the present invention.
Fig. 2 is the schematic diagram that in an embodiment, map moves front and back.
Fig. 3 is the rendering system structural representation in one embodiment of map movement of the present invention.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
As shown in Figure 1, be the rendering intent schematic flow sheet in one embodiment of map movement of the present invention, comprise the steps:
The map that S11, acquisition need show, judges whether the described map that need show has overlapping with the map of current display;
Certain scope of current display setup display view picture map, if when receiving map move, obtains the map that need show; This step, after getting the map that need show, first contrasts with the map of current display, looks into and see if there is lap; In traditional display wall technology, because display window is larger, the map datum played up is very huge, all data of the map after moving all must be played up during each moving map, usually need the pixel playing up millions, display window is larger, and the speed played up is slower, often have during map denotation be interrupted and unsmooth, the experience of map view is poor; The object of this step is the map datum making full use of the current display that video memory stores, if there is overlapped data, then need not load the total data of map to be shown, can accelerate the rendering speed of map.
In a preferred embodiment, the map that described acquisition need show, judges whether the described map that need show has overlapping step specifically to comprise with the map of current display:
First pixel coordinate on map four summits that 1a, acquisition need show;
1b, obtain second pixel coordinate on map four summits of current display;
1c, judge whether the described map that need show has overlapping with the map of current display according to described first pixel coordinate and described second pixel coordinate;
If 1d has overlap, calculate overlapping range and the described zero lap scope that need show map according to described first pixel coordinate and described second pixel coordinate;
Fixing pixel coordinate has been stored in attribute data due to a secondary map, when map moves, obtain the pixel coordinate on map four summits of current display and after moving, need the pixel coordinate on map four summits shown, can judge whether the described map that need show has overlapping with the map of current display, if there is overlap, then calculate the zero lap scope of overlapping range and the described map that need show.
If S12 does not have overlap, then load data corresponding to the described map that need show and play up, showing the described map that need show;
The map determining current display from step S11 and the map zero lap scope that need show, then load and describedly need show data corresponding to map and play up.
If S13 has overlap, then retain data overlapping in the map of described current display, load in the described map that need show and play up after non-overlapping data, show the described map that need show;
In a preferred embodiment, this step specifically can comprise:
3a, according to described overlapping range, obtain in video memory the map datum that the overlapping range of the map of the described current display stored is corresponding;
3b, according to described underlapped scope, load the map datum that in the described map that need show, underlapped scope is corresponding;
If judge there is overlapping scope, the data corresponding due to the map of current display have been stored in video memory all, then can retain overlapping data, play up after reloading non-overlapping data corresponding to the map that need show, the total data of the map that need show need not be played up, rendering speed is accelerated, and map can quickly and smoothly mobile display.
In a preferred embodiment, before the map datum that the overlapping range of the map obtaining the described current display stored in video memory is corresponding, also step is comprised: filter the hot spot data in the map datum that in the map of described current display, overlapping range is corresponding;
Also step is comprised: load the hot spot data that in the described map that need show, overlapping range is corresponding when loading the map datum that in the described map that need show, underlapped scope is corresponding;
Wherein, described hot spot data comprises the map element additional datas such as title mark, map symbol, landform mark, as shown in Figure 2, Fig. 2 a is the map of current display, and Fig. 2 b is the map that need show, and is the superimposed of Fig. 2 a and Fig. 2 b from Fig. 2 c, can find out from Fig. 2 c, the mark map that is just positioned at current display on A ground and the border of the overlapping range of map that need show, this mark can belong to overlapping range, can belong to zero lap scope again; Make mistakes for preventing data processing, the hot spot data in map datum corresponding to described overlapping range can be filtered out before the map datum that the overlapping range of the map obtaining the described current display stored in video memory is corresponding, only retain base map data corresponding to overlapping range; Meanwhile, also should load when loading the map datum that in the described map that need show, underlapped scope is corresponding the hot spot data that in the described map that need show, overlapping range is corresponding.
Accordingly, as shown in Figure 3, the present invention also provides a kind of rendering system of map movement, comprises and obtains judge module 31, first loaded and displayed module 32 and the second loaded and displayed module 33;
Described acquisition judge module 31, for obtaining the map that need show, judges whether the described map that need show has overlapping with the map of current display;
Certain scope of current display setup display view picture map, if when receiving map move, obtains the map that need show; This module, after getting the map that need show, first contrasts with the map of current display, looks into and see if there is lap; In traditional display wall technology, because display window is larger, the map datum played up is very huge, all data of the map after moving all must be played up during each moving map, usually need the pixel playing up millions, display window is larger, and the speed played up is slower, often have during map denotation be interrupted and unsmooth, the experience of map view is poor; The object of this module is the map datum making full use of the current display that video memory stores, if there is overlapped data, then need not load the total data of map to be shown, can accelerate the rendering speed of map.
In a preferred embodiment, described acquisition judge module 31 comprises the first acquisition module, the second acquisition module, judge module and computing module;
Described first acquisition module is for obtaining first pixel coordinate on map four summits that need show;
Described second acquisition module is for obtaining second pixel coordinate on map four summits of current display;
Described judge module is used for judging whether the described map that need show has overlapping with the map of current display according to described first pixel coordinate and described second pixel coordinate;
If described computing module is used for there is overlap, calculate overlapping range and the described zero lap scope that need show map according to described first pixel coordinate and described second pixel coordinate;
Fixing pixel coordinate has been stored in attribute data due to a secondary map, when map moves, obtain the pixel coordinate on map four summits of current display and after moving, need the pixel coordinate on map four summits shown, can judge whether the described map that need show has overlapping with the map of current display, if there is overlap, then calculate the zero lap scope of overlapping range and the described map that need show.
If described first loaded and displayed module 32 is not for having overlap, then loads data corresponding to the described map that need show and play up, showing the described map that need show;
Obtaining in judge module the map determining current display and the map zero lap scope that need show, then loading and describedly need show data corresponding to map and play up.
If described second loaded and displayed module 33 is for there being overlap, then retains data overlapping in the map of described current display, load in the described map that need show and play up after non-overlapping data, show the described map that need show;
In a preferred embodiment, described second loaded and displayed module 33 comprises the 3rd acquisition module and load-on module:
Described 3rd acquisition module is used for according to described overlapping range, obtains the map datum that the overlapping range of the map of the described current display stored in video memory is corresponding;
Described load-on module is used for according to described underlapped scope, loads the map datum that in the described map that need show, underlapped scope is corresponding;
If judge there is overlapping scope, the data corresponding due to the map of current display have been stored in video memory all, then can retain overlapping data, play up after reloading non-overlapping data corresponding to the map that need show, the total data of the map that need show need not be played up, rendering speed is accelerated, and map can quickly and smoothly mobile display.
In a preferred embodiment, described 3rd acquisition module also for filtering the hot spot data in the map datum that in the map of described current display, overlapping range is corresponding before the map datum that the overlapping range of the map obtaining the described current display stored in video memory is corresponding;
Described load-on module is also for loading when loading the map datum that in the described map that need show, underlapped scope is corresponding the hot spot data that in the described map that need show, overlapping range is corresponding.
Wherein, described hot spot data comprises the map element additional datas such as title mark, map symbol, landform mark, as shown in Figure 2, Fig. 2 a is the map of current display, and Fig. 2 b is the map that need show, and is the superimposed of Fig. 2 a and Fig. 2 b from Fig. 2 c, can find out from Fig. 2 c, the mark map that is just positioned at current display on A ground and the border of the overlapping range of map that need show, this mark can belong to overlapping range, can belong to zero lap scope again; Make mistakes for preventing data processing, the hot spot data in map datum corresponding to described overlapping range can be filtered out before the map datum that the overlapping range of the map obtaining the described current display stored in video memory is corresponding, only retain base map data corresponding to overlapping range; Meanwhile, also should load when loading the map datum that in the described map that need show, underlapped scope is corresponding the hot spot data that in the described map that need show, overlapping range is corresponding.
The rendering intent of map movement of the present invention and system, consider a large amount of overlapping region that map may exist between two two field pictures in moving process, after getting the map that need show, first contrast with the map of current display, judged whether lap; When finding that there is overlap, make full use of the map datum of the current display that video memory stores, the total data of map to be shown need not be loaded, what greatly reduce map in moving process plays up pressure, the rendering speed of map can be accelerated, map can quickly and smoothly mobile display, and the experience of map fast browsing is better; The data played up needed for map moves are more, utilize the present invention to carry out the effect of map smoothly movement further obviously, are particularly suitable for the fast browsing of massive map data and show the large window display fields such as wall.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (2)
1. a rendering intent for map movement, is characterized in that, comprises the steps:
The map that acquisition need show, judges whether the described map that need show has overlapping with the map of current display;
If there is no overlap, then load data corresponding to the described map that need show and play up, showing the described map that need show;
If there is overlap, then retains data overlapping in the map of described current display, load in the described map that need show and play up after non-overlapping data, show the described map that need show;
Wherein, the map that described acquisition need show, judges whether the described map that need show has overlapping step specifically to comprise with the map of current display:
First pixel coordinate on map four summits that acquisition need show;
Obtain second pixel coordinate on map four summits of current display;
Judge whether the described map that need show has overlapping with the map of current display according to described first pixel coordinate and described second pixel coordinate;
If there is overlap, calculate overlapping range and the described zero lap scope that need show map according to described first pixel coordinate and described second pixel coordinate;
Wherein, have overlap if described, then retain data overlapping in the map of described current display, the step loading non-overlapping data in the described map that need show comprises:
According to described overlapping range, filter the hot spot data in the map datum that in the map of described current display, overlapping range is corresponding, obtain the map datum that the overlapping range of the map of the described current display stored in video memory is corresponding;
According to described zero lap scope, load the map datum that in the described map that need show, zero lap scope is corresponding, load the hot spot data that in the described map that need show, overlapping range is corresponding simultaneously.
2. a rendering system for map movement, is characterized in that, comprises and obtains judge module, the first loaded and displayed module and the second loaded and displayed module;
Described acquisition judge module, for obtaining the map that need show, judges whether the described map that need show has overlapping with the map of current display;
If described first loaded and displayed module is used for not having overlap, then loads data corresponding to the described map that need show and play up, showing the described map that need show;
If described second loaded and displayed module is used for there is overlap, then retains data overlapping in the map of described current display, load in the described map that need show and play up after non-overlapping data, show the described map that need show;
Wherein, described acquisition judge module comprises the first acquisition module, the second acquisition module, judge module and computing module;
Described first acquisition module is for obtaining first pixel coordinate on map four summits that need show;
Described second acquisition module is for obtaining second pixel coordinate on map four summits of current display;
Described judge module is used for judging whether the described map that need show has overlapping with the map of current display according to described first pixel coordinate and described second pixel coordinate;
If described computing module is used for there is overlap, calculate overlapping range and the described zero lap scope that need show map according to described first pixel coordinate and described second pixel coordinate;
Described second loaded and displayed module comprises the 3rd acquisition module and load-on module;
Wherein, described 3rd acquisition module is also for according to described overlapping range, filter the hot spot data in the map datum that in the map of described current display, overlapping range is corresponding, obtain the map datum that the overlapping range of the map of the described current display stored in video memory is corresponding;
Described load-on module also for according to described zero lap scope, loads the map datum that in the described map that need show, zero lap scope is corresponding, loads the hot spot data that in the described map that need show, overlapping range is corresponding simultaneously.
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| CN103035164B (en) * | 2012-12-24 | 2015-03-25 | 广东威创视讯科技股份有限公司 | Rendering method and system of geographic information system |
| CN105575254B (en) * | 2014-11-11 | 2019-10-22 | 高德信息技术有限公司 | Electronic map road rendering method and device |
| CN105763885B (en) * | 2014-12-19 | 2020-05-12 | 艾迪普（北京）文化科技股份有限公司 | Method and device for releasing three-dimensional image-text information in real time |
| CN106097413A (en) * | 2016-06-03 | 2016-11-09 | 大连陆海科技股份有限公司 | The drawing system of multi-scale vector chart data and method for drafting |
| CN112287249A (en) * | 2020-12-25 | 2021-01-29 | 智道网联科技(北京)有限公司 | Rendering method and device for map engine small-area events |
| CN117065331B (en) * | 2023-08-25 | 2024-03-12 | 上海皿鎏数字科技有限公司 | Game scene loading control method and system |
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| CN102376160A (en) * | 2010-08-09 | 2012-03-14 | 中国移动通信集团辽宁有限公司 | Method and system for updating real-time traffic information |
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| CN102542903A (en) * | 2010-12-30 | 2012-07-04 | 上海博泰悦臻电子设备制造有限公司 | Method and device for fluent movement of map |
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Address after: 510670 Guangdong Province, Guangzhou high tech Industrial Development Zone Kezhu Road No. 233 Patentee after: Wei Chong group Limited by Share Ltd Address before: 510663 Guangzhou province high tech Industrial Development Zone, Guangdong, Cai road, No. 6, No. Patentee before: Guangdong Weichuangshixun Science and Technology Co., Ltd. |