Re: [Inkscape-devel] SVG in 92 and Phyisical Scale

-- Mc PS: If you want to understand more in depth, I wrote a few posts about units, the two relevant parts are https://www.patreon.com/posts/units-part-iii-13741251 and https://www.patreon.com/posts/units-part-iv-13993147 On 08/24/2017 03:09 PM, Martin Owens wrote: > Hi James, > > It seems like the main issue is thrice fold: > > A) opening SVG 1.1 file means we have to convert it to SVG 2.0 dpi, > even though the spec isn't released, we've cut off the published spec > support too early. > B) We can't save physical units into the svg files themselves, > mitigating issues of external unit compatibility. > C) We don't have any capacity for users to change the way svg is saved > to indicate which svg spec we should use. > > So we've got quite the compatibility problem. This isn't an issue if > one exports pdf files or printing to cut, but is a problem in this > case where the cutting software is consuming svg files directly. > > Tav and others: For 0.93, do we have a plan to try and help this situation? > > If we can provide a way to save physical units and set svg 1.1 or svg > 2.0 outputs, we should be covering all bases. > > Best Regards, Martin Owens > > On 23 August 2017 at 11:10, James Fritzler <jimbox13@...3425...> wrote: >> Hi Inkscape Devs! >> >> >> I’ve used Inkscape for about five years now and have built up quite the >> library of svg files and have been using 91 since its release. My main >> creative effort is to build paper toys that I print and cut (in bulk) on a >> Silhouette Portrait cutting machine. (More info on my works at >> http://netroids.net ). I have a 100s of files and hoped to use them as my >> long term "masters” given that SVG is not proprietary and has had such great >> page layout fidelity for me. >> >> >> I’d love to update to v92 and future versions but, as is commonly known, the >> svg save logic has changed to support a new CSS standard of 96dpi and it is >> affecting my ability to import into my cutting software. >> >> >> It seems that perhaps the values written by Inkscape in 91 svg files are >> encoded using a 90dpi scale from their original design-time dimensions. In >> the past I’ve had much success importing SVGs from Inkscape 91 into >> Silhouette studio for years. (Granted, I do perform a little cleansing in a >> copy of the master svg before I go to Silhouette: I simplify the layers, >> ungroup, and flatten out clones into their own objects. Perhaps it is just >> serendipity that the Silhouette Studio imports SVGs at the 90dpi. (I tried >> asking them about dpi but I couldn’t "break through" their first-tier help >> desk support "fire wall".) >> >> >> I know there’s an import prompt and process for opening 91 files in 92 and I >> have participated in the launchpad forum and chat with Mc about this topic. >> (my user name is jimbox13). >> >> >> Unfortunate for me, none of the prompts give a workable solution. Here’s >> what happens to my files based on each option. (I used a diff tool in to >> investigate some of the changes.) >> >> "Accuracy for sizes and position of paths" (Desired option) >> >> Grid and guides appear to be changed – though I’m not sure to what extent. >> Rectangles, paths and strokes are sized up by 6.667% >> Inkscape Designer Outcome: shapes and sizes correct right based on the >> page. :) (bug #1712114 occurs.) >> Cutter Software Outcome: File is too large (by 6.667%) for cutting area. :( >> >> "Digital Art" >> >> Grid and guides changed to some degree. >> Rectangles and paths not changed. >> Inkscape Designer Outcome: shapes and sizes are too small for the page :( >> Cutter Software Outcome: shapes and sizes are correct :) >> >> "Accuracy for masks and clips" >> >> Grid and guides changed to some degree. >> Rectangles, paths and strokes are changed to some degree, not the same as >> above. >> Inkscape Designer Outcome: shapes and sizes correct right based on the >> page. :) (bug #1712114 does not occur.) >> Cutter Software Outcome: File is significantly too small for cutting area. >> :( >> >> None of these options produce a svg that maintains its correct physical >> dimensions across both software packages. I tried experimenting by >> customizing the "units.xml" file in 92 without success. >> >> >> Here is my original v91 file zipped. (I added a background rectangle that >> is the size of the page to help troubleshooting.) >> >> https://www.dropbox.com/s/q6o17j5an2piiw3/acutra_TOCUTv91wBG.zip?dl=0 >> >> >> Is there anything that can be done? >> >> Thanks >> >> >> >> Jim >> >> >> ------------------------------------------------------------------------------ >> Check out the vibrant tech community on one of the world's most >> engaging tech sites, Slashdot.org! http://sdm.link/slashdot >> _______________________________________________ >> Inkscape-devel mailing list >> Inkscape-devel@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/inkscape-devel >> > > ------------------------------------------------------------------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _______________________________________________ > Inkscape-devel mailing list > Inkscape-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/inkscape-devel >