AW: [mapserver-users] MapServer Animation Examples of Pipeline Flow?

[Arnd Wippermann]

here is another example with animation and OpenLayers
http://gis.ibbeck.de/ginfo/apps/Pentominoes/pentominoes.html
 
click 'starten' or 'start' to begin the animation.
 
Arnd Wippermann
 

  _____  

Von: mapserver-users-bounces at lists.osgeo.org
[mailto:mapserver-users-bounces at lists.osgeo.org] Im Auftrag von Bill Thoen
Gesendet: Samstag, 2. August 2008 20:07
An: mapserver-users at lists.osgeo.org
Betreff: [mapserver-users] MapServer Animation Examples of Pipeline Flow?


I've got a little project that requires an "eye-catching" display of flow
through a network of gas pipelines. I'm using MapServer 5.0.3 (with AGG) on
Fedora Core 9 and I want to stick with open source technology if possible.

Are there any examples out there of MapServer showing animation effects
along a linear feature (i.e. road, river, pipeline, information flowlines,
etc.) that I could look at to get some ideas?

The first thought I had was to move colored dots along a pipeline in the
direction of flow and use a timer to pace the animation. Each dot would
represent the day's load from a source and they would move based on pipe
diameter, pressure and other parameters that affect flow. This works, but
the down side is that eventually you have a lot of objects to juggle and
performance goes to heck.

Then I thought of using a series of textures for each pipeline segment and
swapping them iteratively to simulate an animating. 

What won't work is rendering the entire map image each time; that would go
from eye-catching to mind-numbing pretty fast. So is there a way with
MapServer to display a map base, but allow for objects to be "floated" on
top in such away that I don't have to re-render the the entire map each
time? (like an AJAX tool for mapserver?)

If anyone has any ideas or knows of examples they could point me to, I'd
appreciate it.

- Bill Thoen


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