On Feb 15, 11:48 am, Jasperdc <jasper.de.craec...@gmail.com> wrote:
> Hello,
>
> I'm currently trying to figure out how I can show traffic information
> in an overlay on a Google Map (in a country where google maps does not
> already support Live Traffic). The provided data looks like: "point a
> to point b is red" but the problem is that I've got approx. 2000 of
> these small lines, this causes the browser to crash/timeout due to the
> long render time (obviously) when adding them to the map one by one.
>
> Now I was wondering if encoded polygon lines are really the way to go
> here... maybe I could group by color so I would have 3 encoded poly
> line objects (e.g. green,orange,red,...). The problem in this case is
> that the highways obviously head in multiple directions, which makes
> it impossible to define in a single polyline (as far as I know).
>
> So my final question would be:
> Does anyone have experience with drawing complex polylines in multiple
> directions with up to about 2000 small parts?
>
> An alternative solution would be to draw all the roads in green by
> default and overwrite parts with red/orange where applicable.
>
> Thanks in advance,
> Jasper
Look at the "Lake Michigan Shore" demo accessable from:
http://www.polyarc.us
It is a small demo but it scales well. A single OverlayView handles
all polys rather than one OverlayView per poly. A single event
listener handles all dragging, panning & zooming. Polys are defined
in a cluster rather than individually. Polys must have unique names
which are their reference handles.
You can change the color of several polys to the same color with the
"setColor" method.
var polyarray=[polya,polyb,polyc,polyd, ... ];
var
color={fill:,fillColor:,fillAlpha:,stroke:,strokeColor:,strokeAlpha:,weight:};
cluster.setColor(polyarray,color);
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