Dear Cameron:
On 6/22/07, Cameron Shorter <[EMAIL PROTECTED] > wrote:
Chen Chen wrote:
>
> Dear All,
>
>
>
> I am Computer Science major at Tsinghua University, Beijing.
> Currently, I am working on a GIS project based on MapBuilder and
> GeoServer.
>
>
>
> Based on MapBuilder on the browser, I want to draw some shapes over
> the map obtained from WMS. I found svg2vml
> <http://code.google.com/p/svg2vml/> library is very interesting, and
> employed it for my project.
>
Interesting. It would have been nice to use svg2vml when we originally
wrote the vector renderer.
You might not be aware that our MapPaneOL widget already renders lines
(from WFS or GML) into SVG/VML.
Yeah, I see the shipTrack sample. It is great.
>
>
>
> Now I want to "animate" the svg shapes over the map. Could the showing
> or hiding of svg shapes be set according to time? How can I do it?
> Thank you very much.
>
I'm not sure what you are trying to achieve.
It is possible you would benefit from a timer event which is sent
periodically and can be used to refresh the map. I think tool/Timer.js
does this. Look for examples in the code.
The main idea of our project is to let "features" show at right locations
on a 2D map, and animate if they are temporal variables in nature.
For example, I want to show "rainfall" data on the map. Since the data is
associated with measured time. I am trying to show a series of data in a
specific period of time. And suggestions about that? Thank you.
Christopher Hunt was looking at tracking moving vehicles and might have
some ideas on how to store the moving objects in GML or similar. (Search
the archieves for threads he participated in).
Thanks for the information. I will contact Christopher.
Thank you!
>
>
> Regards,
>
> Chen
>
> 2007-6-20
>
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--
Cameron Shorter
Systems Architect, http://lisasoft.com.au
Tel: +61 (0)2 8570 5050
Mob: +61 (0)419 142 254
--
Chen Chen, M.S. Candidate
Department of Computer Science, Tsinghua University
RM.218, BLDG.13, Tsinghua Univ.
Beijing 100084
P.R.China
Tel: +86 10 62775641
Cell: +86 13810348283
Email: [EMAIL PROTECTED]
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