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<div>Others, who have done something similar ( i guess ) have marked the area, either with an invisible polygon, and then check if its visible. Or you can find out at which bounds the city is visible in and use the map.getExtent to get the BBOX and check if
the city bounds are within the viewport BBOX (Bounding Box).</div>
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<div><a href="http://dev.openlayers.org/apidocs/files/OpenLayers/BaseTypes/Bounds-js.html#OpenLayers.Bounds">http://dev.openlayers.org/apidocs/files/OpenLayers/BaseTypes/Bounds-js.html#OpenLayers.Bounds</a></div>
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<span style="font-family: Calibri, sans-serif; color: rgb(127, 127, 127); ">Med vennlig hilsen / Kind regards,<o:p></o:p></span></p>
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<b><span style="font-family: Calibri, sans-serif; color: rgb(64, 64, 64); "> </span></b></p>
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<b><span lang="EN-US" style="font-size: 10pt; font-family: Arial, sans-serif; color: navy; ">Christer Nordbø</span></b><span lang="EN-US" style="font-size: 7.5pt; font-family: Arial, sans-serif; color: navy; "><br>
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<span style="font-weight:bold">From: </span>"Macbeth, Andrew (US SSA)" <<a href="mailto:andrew.macbeth@baesystems.com">andrew.macbeth@baesystems.com</a>><br>
<span style="font-weight:bold">Date: </span>Thu, 4 Apr 2013 19:18:00 +0000<br>
<span style="font-weight:bold">To: </span>"<a href="mailto:openlayers-users@lists.osgeo.org">openlayers-users@lists.osgeo.org</a>" <<a href="mailto:openlayers-users@lists.osgeo.org">openlayers-users@lists.osgeo.org</a>><br>
<span style="font-weight:bold">Subject: </span>[OpenLayers-Users] Is point visible<br>
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<p class="MsoNormal">I’ve poked around and around and don’t a means to determine whether a given point is visible to the user. For example, if the user has scrolled the map away from Boston such that it can not be seen, how can I determine that?
<o:p></o:p></p>
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