Hi Marek, I had a similar question last year - http://osgeo-org.1560.x6.nabble.com/Curves-in-MapServer-td5377180.html
You can add/draw CIRCULARSTRING geometries to MapServer using OGR - see the sample rainbow image at https://github.com/geographika/mappyfile-colors The sample map file is: https://raw.githubusercontent.com/geographika/mappyfile-colors/master/example.map This loads the following curved arcs from https://github.com/geographika/mappyfile-colors/blob/master/curves.csv CONNECTIONTYPE OGR has to be used rather than using inline features as this approach defaults to using GEOS which doesn't support curves, whereas as forcing OGR does. Seth -- web:http://geographika.co.uk twitter: @geographika On Wed, Mar 6, 2019, at 12:31 AM, Lime, Steve D (MNIT) wrote: > Not within MapServer directly, at least not at first glance. There are circle > layers but there’s no way to limit drawing to just a specific arc on that > circle. Here are some other ideas: > > 1) Perhaps it could be done externally in OGR or PostGIS and then rendered in > MapServer as a polygon or a line… > 2) You could also take a look at using javascript geotransformations: > https://mapserver.org/mapfile/geomtransform.html#javascript-transformation > Support was added a while back and isn’t widely used but this is the sort of > thing it was added for. In theory you should be able to compute the arc > yourself and return it for rendering. So you pass in the 2 lines and then > return the arc as a line shape or a pie slice as a polygon shape. (maybe this > helps… > https://stackoverflow.com/questions/45009327/draw-arc-between-two-lines-i-need-to-calculate-points) > > If option 2 works this would be a great thing to archive – a library of > geomtranforms. I might tinker with this tonight… ;-) > > --Steve > > *From:* mapserver-users [mailto:mapserver-users-boun...@lists.osgeo.org] *On > Behalf Of *Marek Bak > *Sent:* Tuesday, March 05, 2019 1:27 PM > *To:* mapserver-users@lists.osgeo.org > *Subject:* [mapserver-users] Arc symbol. > > Hello All, > Is it possible to create an arc symbol im mapserver? For example I have two > lines constructed over some angle (ex. 30 degree) and I want to draw an arc > between them. > Regards, > Marek > > _______________________________________________ > mapserver-users mailing list > mapserver-users@lists.osgeo.org > https://lists.osgeo.org/mailman/listinfo/mapserver-users
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