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<p class="MsoNormal">I looked at the onMeshCreated callback but I don’t think I understand it very well.
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">In my small sample app, I have 3 features on the GeometryLayer from a FileSource. As I zoom in and out, I see onMeshCreated get called multiple times – does this mean new ThreeJS objects are being created for all zoom levels?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Also, the values that get passed in to onMeshCreated don’t seem to represent individual features. Is there a one-to-one mapping between a feature defined in the FileSource and a ThreeJS object that gets created? The object passed in to
onMeshCreated seems to represent something that holds all of the features.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I have a use case where I will need to change visibility for individual features in the layer. Am I going about this the wrong way by trying to access the ThreeJS objects? Is there another way to accomplish this?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Chad<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b>From:</b> Adrien Berthet <Adrien.Berthet@ign.fr> <br>
<b>Sent:</b> Tuesday, April 21, 2020 12:46 AM<br>
<b>To:</b> Johnston, Chad <Chad.Johnston@parsons.com>; itowns-user@lists.osgeo.org<br>
<b>Subject:</b> [EXTERNAL] RE:Accessing features of a GeometryLayer<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:black">Hi Chad,<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:black">I assume you are using a
<b>FileSource</b> ? In this case, you can use <b>layer.source.parsedData</b> to access the
<b>FeatureCollection</b> (which is an internal itowns format).<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:black">If you meant the ThreeJS objects, you can get them by setting a
<b>onMeshCreated</b> to your layer, like in this case for example: <a href="https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_iTowns_itowns_blob_master_examples_source-5Fstream-5Fwfs-5F3d.html-23L189-2DL192&d=DwMF-g&c=Nwf-pp4xtYRe0sCRVM8_LWH54joYF7EKmrYIdfxIq10&r=mQjF0_nPzjZcqOc5JWZp-Sz0OqXtNQ5NEp_IsAW3X-I&m=lbRrkYQRGdYF3aF_Q9iTbEjabC6FpWGbSR2gFv9NP2k&s=jrJw2LpCSd80WmcQQlDuec8u91wxQwfpL-UYrnMBDYA&e=" target="_blank">
https://github.com/iTowns/itowns/blob/master/examples/source_stream_wfs_3d.html#L189-L192 [github.com]</a><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:black">It allows you to access the mesh once it has been created, and you can even use this method with a stream.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:black">Hope it helps a bit<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:black">Adrien<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><b><span style="font-size:10.0pt;font-family:"Tahoma",sans-serif;color:black">De :</span></b><span style="font-size:10.0pt;font-family:"Tahoma",sans-serif;color:black"> ITowns-user [itowns-user-bounces@lists.osgeo.org]
de la part de Johnston, Chad [Chad.Johnston@parsons.com]<br>
<b>Envoyé :</b> lundi 20 avril 2020 19:57<br>
<b>À :</b> <a href="mailto:itowns-user@lists.osgeo.org">itowns-user@lists.osgeo.org</a><br>
<b>Objet :</b> [iTowns-user] Accessing features of a GeometryLayer</span><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:black">How can I access features that were added to a GeometryLayer from a GeoJSON source? I have to pass in a ThreeJS Group to the GeometryLayer constructor, but that object ends up having no children so I’m not sure
where the actual features end up in the scene.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black"> <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black">To be clear, I’d like to be able to access individual ThreeJS objects that represent each feature in the layer. I don’t know if that’s how they’re created and added to the scene, but it seems logical since they
can be different colors.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black"> <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black">Thanks,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black">Chad<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:black"><o:p> </o:p></span></p>
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