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 _______________________________________________ Users mailing list [email protected] http://openlayers.org/mailman/listinfo/users
