Microsoft's Virtual Earth and Google Maps uses a vector layer (VML or SVG) on
top of their raster layer (basemap) to show driving directions.
----- Original Message ----
From: Bill Thoen <[EMAIL PROTECTED]>
To: mapserver-users@lists.osgeo.org
Sent: Saturday, August 2, 2008 2:06:37 PM
Subject: [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
_______________________________________________
mapserver-users mailing list
mapserver-users@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/mapserver-users
