The input is very much appreciated,<div>I'm kind of new to Open Layers and feeling my way around. How would I generate the curve? Via a mask or a would this be incorporated into the images pre render?</div><div><br></div><div>Many thanks,</div><div><br></div><div>Ash</div><div><br></div><div><div><div>On 20 Jun 2011, at 11:10, Peter Körner [via OSGeo.org] wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite">
Am 18.06.2011 11:09, schrieb Fixdit:
<br>> Hello,
<br>> I'm in need of help finding/building a day and night layer overlaid on top
<br>> of an Openlayers world map. Much like this Google Map example:
<br>> <a href="http://www.daylightmap.com/index.php" target="_top" rel="nofollow" link="external">http://www.daylightmap.com/index.php</a><br>>
<br>> How would this be achieved using Openlayers?
<br><br>I don't think it's a question of openlayers but one of your tile source.
<br>You would need a Tile-Renderer or maybe WMS that renders you such images:
<br><a href="http://www.daylightmap.com/tiles/cache/tile_n_3_0_2_1308564480.png" target="_top" rel="nofollow" link="external">http://www.daylightmap.com/tiles/cache/tile_n_3_0_2_1308564480.png</a><br><br>You can then add them as Tile-Layer with opacity: 0.8
<br><br>> I have some algorithm examples that could kick start things if there is
<br>> nothing already out there, but unsure of where to start implementing
<br>> something like this with Openlayers:
<br>> <a href="http://www.astro.uu.nl/~strous/AA/en/antwoorden/zonpositie.html#v526" target="_top" rel="nofollow" link="external">http://www.astro.uu.nl/~strous/AA/en/antwoorden/zonpositie.html#v526</a><br><br>It may be possible to add this as vector layer, but you won't get these
<br>lights on cities then.
<br><br>Peter
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