Andrea, I also recently implemented a grid convergence calculation capability in a rendering transform for use with styling of coverages like wind that have a direction (see posts on 10/14/22 and 10/24/22). Performance is indeed impacted. I check the projection inside the rendering transform to see if GCA needs to be calculated, but if you think it's a significant performance boost to not even call the rendering transform in these cases I'd be very interested in such an optimization.
Tom ________________________________________ From: Andrea Aime <andrea.a...@geosolutionsgroup.com> Sent: Friday, December 1, 2023 1:43 AM To: Ian Turton Cc: GeoTools Subject: [EXTERNAL] Re: [Geotools-devel] Fun with wind arrows in polar projections EXTERNAL EMAIL -- This message originates from outside of SAIC On Fri, Dec 1, 2023 at 10:03 AM Ian Turton <ijtur...@gmail.com<mailto:ijtur...@gmail.com>> wrote: Sounds like a good solution to the issue, what about the existing SimplifyingVisitor and other simplifiable functions like Add and Subtract, will you add it to them or is that left as further work? Hi Ian, the existing simplifying visitor will delegate to the SimplifyableFunction when it finds one. The math operations are already covered and pre-computed when all their arguments are static for the current request (e.g., they might be env vars whose value is fixed in the current request). More simplifications could be carried out for specific cases when only one of the two operands is static, e.g. "0 + function" is the same a "function", same goes for "1 * function" and so on, those simplifications could be added with more development, if they are found to be common cases (TBD). Cheers Andrea == GeoServer Professional Services from the experts! Visit http://bit.ly/gs-services-us for more information. == Ing. Andrea Aime @geowolf Technical Lead GeoSolutions Group phone: +39 0584 962313 fax: +39 0584 1660272 mob: +39 339 8844549 https://www.geosolutionsgroup.com/ http://twitter.com/geosolutions_it ------------------------------------------------------- Con riferimento alla normativa sul trattamento dei dati personali (Reg. UE 2016/679 - Regolamento generale sulla protezione dei dati “GDPR”), si precisa che ogni circostanza inerente alla presente email (il suo contenuto, gli eventuali allegati, etc.) è un dato la cui conoscenza è riservata al/i solo/i destinatario/i indicati dallo scrivente. Se il messaggio Le è giunto per errore, è tenuta/o a cancellarlo, ogni altra operazione è illecita. Le sarei comunque grato se potesse darmene notizia. This email is intended only for the person or entity to which it is addressed and may contain information that is privileged, confidential or otherwise protected from disclosure. We remind that - as provided by European Regulation 2016/679 “GDPR” - copying, dissemination or use of this e-mail or the information herein by anyone other than the intended recipient is prohibited. If you have received this email by mistake, please notify us immediately by telephone or e-mail The information contained in this e-mail and any attachments from Science Applications International Corporation ("SAIC") may contain sensitive, privileged and/or proprietary information, and is intended only for the named recipient to whom it was originally addressed. If you are not the intended recipient, any disclosure, distribution, or copying of this e-mail or its attachments is strictly prohibited. If you have received this e-mail in error, please notify the sender immediately by return e-mail and permanently delete the e-mail and any attachments. _______________________________________________ GeoTools-Devel mailing list GeoTools-Devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/geotools-devel
