[OpenLayers-Users] Animating a Polyline to Simulate Fluid Flow in a Pipeline

[Erik Uzureau]

Hi Bill, super interesting work you've done here. Would you be
interested in adding a link to this site on the
gallery.openlayers.org page? Or can you think of another, better way
to share this information with people?

I have thought it over a couple of times and I can't seem to come up
with any good place to plug this info
in... yet I feel it might be of big help to someone else down the
line.... I guess the best I can do is suggest
making a wiki tutorial for it.

cheers!
e


On Sat, Aug 23, 2008 at 6:33 PM, Bill Thoen <bthoen at gisnet.com> wrote:
> A while ago I asked a question here about how I could simulate pipeline
> flow in a live, animated way. A couple of you responded and gave me some
> ideas to try. So to do my bit to contribute to the commonwealth, I've
> posted a working sampler of these ideas at
> http://206.168.217.244/oo-js/x2.html. This page demonstrates 3 different
> techniques showing movement along a polyline.
>
> Also of note are 3 great circle functions in the Point.js code. They are
> geoDistanceTo(), geoBearingTo() and geoWaypoint(). The first calculates
> the great circle (shortest) distance between two points on  a sphere;
> the second calculates the great circle bearing between two points; and
> the third determines the lat/lon coordinate of a point along a great
> circle that is at a specified distance and bearing from a point.  The
> math behind these comes from Ed Williams' excellent Aviation Formulary
> site at http://williams.best.vwh.net/avform.htm.
>
> To anyone who actually looks into my code I apologize for its
> amateurishness, but I've only recently started learning OpenLayers and
> object-oriented JavaScript. I would appreciate any comments that would
> improve it, or any new ideas for animating lines.
>
> So Long, and Thanks for All the Fish,
>
> - Bill Thoen
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