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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F4E79;mso-fareast-language:EN-US">Hi,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F4E79;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F4E79;mso-fareast-language:EN-US">as far as I understand, MapProxy just checks if the requested bbox intersects with the defined shape. If so it returns
the full image. So clipping is not out of the box possible within the configuration of your service.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F4E79;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F4E79;mso-fareast-language:EN-US">However you can accomplish this with authorization filters (@see
<a href="https://mapproxy.org/docs/latest/auth.html">https://mapproxy.org/docs/latest/auth.html</a>). This is how we do it. We use PasteDeploy and a custom AuthFilter.
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F4E79;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F4E79;mso-fareast-language:EN-US">Here is the paste config:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F4E79;mso-fareast-language:EN-US"> paste.filter_app_factory = clipping:GeometryAuthFilter<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F4E79;mso-fareast-language:EN-US"> shape = /path/to/shape.shp<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F4E79;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F4E79;mso-fareast-language:EN-US">And here the filter code (clipping is implemented for all layers within a wms):<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F4E79;mso-fareast-language:EN-US"> import logging<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F4E79;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F4E79;mso-fareast-language:EN-US"> from mapproxy.util.geom import (<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F4E79;mso-fareast-language:EN-US"> load_datasource,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F4E79;mso-fareast-language:EN-US"> load_ogr_datasource,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F4E79;mso-fareast-language:EN-US"> load_polygons,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F4E79;mso-fareast-language:EN-US"> require_geom_support,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F4E79;mso-fareast-language:EN-US"> build_multipolygon,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F4E79;mso-fareast-language:EN-US"> )<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F4E79;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F4E79;mso-fareast-language:EN-US"> LOGGER = logging.getLogger('mapproxy.clipping')<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F4E79;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F4E79;mso-fareast-language:EN-US"> class GeometryAuthFilter(object):<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F4E79;mso-fareast-language:EN-US"> def __init__(self, app, global_conf, shape, where=None, srs='EPSG:4326'):<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F4E79;mso-fareast-language:EN-US"> self.app = app
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F4E79;mso-fareast-language:EN-US"> LOGGER.info('Loading clipping shape %s' % shape)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F4E79;mso-fareast-language:EN-US"> geom = load_ogr_datasource(shape, where)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F4E79;mso-fareast-language:EN-US"> self.bbox, self.geom = build_multipolygon(geom, simplify=True)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F4E79;mso-fareast-language:EN-US"> self.srs = srs<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F4E79;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F4E79;mso-fareast-language:EN-US"> def __call__(self, environ, start_reponse):<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F4E79;mso-fareast-language:EN-US"> # put authorize callback function into environment<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F4E79;mso-fareast-language:EN-US"> environ['mapproxy.authorize'] = self.authorize<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F4E79;mso-fareast-language:EN-US"> return self.app(environ, start_reponse)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F4E79;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F4E79;mso-fareast-language:EN-US"> def authorize(self, service, layers=[], environ=None, **kw):<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F4E79;mso-fareast-language:EN-US"> if service.startswith('wms.'):<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F4E79;mso-fareast-language:EN-US"> rights = {'authorized': 'partial', 'layers': {}}<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F4E79;mso-fareast-language:EN-US"> for layer in layers:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F4E79;mso-fareast-language:EN-US"> rights['layers'][layer] = { 'map': True, 'limited_to': { 'geometry': self.geom, 'srs': self.srs } }<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F4E79;mso-fareast-language:EN-US"> return rights<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F4E79;mso-fareast-language:EN-US"> return {'authorized': 'full'}<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F4E79;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F4E79;mso-fareast-language:EN-US">Kind regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F4E79;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F4E79;mso-fareast-language:EN-US">Dirk<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Von:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> MapProxy [mailto:mapproxy-bounces@lists.osgeo.org]
<b>Im Auftrag von </b>Pestereva, Anna<br>
<b>Gesendet:</b> Freitag, 15. Juli 2016 19:39<br>
<b>An:</b> mapproxy@lists.osgeo.org<br>
<b>Betreff:</b> Re: [MapProxy] Limit coverage to a polygon<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Marcus,<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I've had the same experience with cropped WMS. Note that as you zoom in to your AOI, you should see imagery being cropped closer to the polygon - like on the northern side of the red line in the example below.<o:p></o:p></p>
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<p class="MsoNormal">If there is a better solution, I'd like to learn about it too.<o:p></o:p></p>
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<img border="0" width="163" height="106" style="width:1.6979in;height:1.1041in" id="_x0000_i1025" src="cid:image001.png@01D1E0CB.7CB4C660" alt="Inline image 1"><br>
-- <o:p></o:p></p>
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<p class="MsoNormal"><b><span style="font-family:"Arial",sans-serif;color:#0028A8">Anna Pestereva, GISP</span></b><b><span style="font-family:"Arial",sans-serif"> |
<i>Application Developer & Cartographer</i></span></b><span style="font-family:"Arial",sans-serif"><br>
<b><span style="color:gray">Aerial Services, Inc. (ASI) </span></b></span><o:p></o:p></p>
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