On Tuesday, July 25, 2017 at 1:20:58 PM UTC+2, @TiddlyTweeter wrote: > > TW works well with SVG. Its well understood & integrated into it. >
That was one of biggest changes between TWclassic and TW5. SVG was specified and implemented into browsers, for a very long time already, before developers started using them. So the technology can be expected to be stable. ... and SVG has some advantages over font-based icon sets. ... > Two things I don't understand ... > > - WHY is the normative icon set at 22pt (points) rather than 22px > (pixels)? > > I wouldn't interpret too much into those settings. ... - 1 pt is 1/72 inch mainly used for printing - 1 px basically is 1/96 of an inch, if you have a 96dpi display. .. Which was true for a long time. .. but now we have hiDPI screens, which only means, that 96px is aproximately 1 inch see. https://developer.mozilla.org/en/docs/Web/CSS/length#Absolute_length_units especially: Some specific examples: > > - 1in is always 96px. > - 3pt is always 4px. > - 25.4mm is always 96px. > > > > - Am I right in thinking that the viewBox setting of "0 0 128 128" > makes an ultimate SVG viewport 28% bigger than the content overall, with > the svg content auto-centred? > > SVG internally defines it's coordinate system based on the viewBox params and the units used in width and height. Most SVG drawing programs are mainly used for printing, so I think, it's just the default value, that Jeremy's program used, when exporting svg files. I'm not 100% percent sure, why it is 128 units, but I guess it comes from bitmap-icon settings in most OSes. They start with 16x16 px for favicons and go up to imo 512x512 of even higher. So you see its a multiple of 16. So it makes sense to produce vector graphics based on multiples of 16 too, since there will be less scaling issues, introduced by math, if you export bitmap-images ... just some guesses here. > In beginning to make images for TW I'd like to better understand the > default approach for what become interface icons. > If you use the TW default settings, you'll get relatively good results, since they are battle-tested and the base themes work well with them. ... have fun! mario -- You received this message because you are subscribed to the Google Groups "TiddlyWiki" group. To unsubscribe from this group and stop receiving emails from it, send an email to tiddlywiki+unsubscr...@googlegroups.com. To post to this group, send email to tiddlywiki@googlegroups.com. Visit this group at https://groups.google.com/group/tiddlywiki. To view this discussion on the web visit https://groups.google.com/d/msgid/tiddlywiki/86ab3b97-fc8b-4e36-a405-2b3fb7729e59%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
