- Inkscape Devel - Inkscape Mailman

Discussion for the next developers meeting
by NASA Jeff 23 Sep '20

23 Sep '20

I missed the last developers meeting but intend to make the next one. I'm still in Istanbul and I've had a good chance to think things through more thoroughly and simplify things, still I'll have to be briefer that I otherwise would be as I don't have access to all my resources and am working on a very old laptop. Points: -Pitfalls of CSS and Javascript and indeed SIML, which is now deprecated. *I have some examples of CSS and Javascript I've put together, I'll make sure all the examples are in both CSS and Javascript so the pitfalls can be seen. -Possibility of a dual implementation model, both CSS and Javascript. CSS being limited to just CSS and fully editable in the GUI, Javascript only limited by way of features available (re security etc...) but not being fully editable in the GUI, inkscape isn't an IDE. -Performance issues with Firefox ECMA scripting engine on older machines. -Options for implementing security beyond that provided by the ECMA engine by default. -Modular design, allowing the ECMA engine and APIs to more easily be integrated with other open source applications. *Engine integration, *API modules providing and API view with module availability restricted based on use. i.e. Runtime tool extensions need APIs that should not be available to SVG documents. -Lightly cover extra tools and GUI changes required for animation and interactivity etc... This will require some mockups to have a proper discussion about. -Possibility of assistance from Universities by way of taking on some of the work as elements of research projects. -Potential for revenue generation in a souped up version. -Discuss a Python2/3 implementation written in Javascript that I've used via University. This would allow for existing Python plugins that are apparently quite broken at the moment to be ported to javascript should the time come -Potential for macro recording and real-time extensions, e.g. new drawing tools like the shape recognition extension I've been working on. Finally, -Canvas performance, options available and discuss the current implementation and bottlenecks and how this can be moved forward into the up and coming OpenGL, Vulkan etc.. implementation.

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c++17 usage
by René de Hesselle 21 Sep '20

21 Sep '20

Developers, in our next meeting I'd like to discuss c++17 usage - specifically new std library features (https://wiki.inkscape.org/wiki/index.php?title=C%2B%2B17). Allow me to be blunt: so far we've achieved nothing but to increase complexity. For the introduction of 'filesystem' alone we already had to introduce three different strategies: - use std::filesystem as default for up-to-date gcc toolchains - use boost::filesystem on macOS to not break support for older OS releases - add -lstdc++fs linker flag for gcc 8.x I propose to refrain from using std c++17 library features and go for boost on all platforms where applicable (e.g. boost::filesystem). This way we avoid introducing new platform/compiler specific code paths that don't bring any benefit. René

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tuning the canvas
by NASA Jeff 18 Sep '20

18 Sep '20

I missed the dev meet up, I'm on holiday in Istanbul at the moment, here's some additional thoughts i had nodding off last night: I don't know what the performance bottle necks in the canvas are but i had a think about vector graphics performance and this is what I identified: caching of objects and image sections, reducing the fidelity when an object is being modified dynamically, improved drawing algorithms (integer) ... that's a no brainier (fits in with fidelity), clipping (which also fits in with caching), and finally JIT compiling drawing operations with dynamic elements in their inner loops so that they can be properly optimized out, vectorized and unrolled etc...

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canvas performance
by NASA Jeff 10 Sep '20

10 Sep '20

at the very least it should be podssijble to switch over to almost pure integer rendering with AA disabled to get enough performance to preview animations in real time.

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canvas rasterizing performance
by NASA Jeff 10 Sep '20

10 Sep '20

from what's bewen said it seems like the canvas has some performance issues. I have quite a bit of background in relation to tuning rendering engines for performance. help i used to do 3d animated graphics on a 386 with a few mewg of ram. even sqeuuzed a simple cad package onto as bbc computer with 32k of memory. basically, if i get time i'll take a look at it and tyry to identify what the performance bottle knecks are and how to improve them.

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animation and scripting developers meeting
by NASA Jeff 10 Sep '20

10 Sep '20

i don't know what time zoness you guys frequent or other work engagements: I'm going to raise a bug for a developers meeting next wednesday at 4pm GMT+1. it may take an hour or drag on longer depending on how much input people have to give. all are welcome. the adjenda is as follows: the two options going ahead. CSS Only or javascript with css. : with demos summary of the benifts and limitations of each: with demos research and development possibilities exploring javascript further, what work would have to be completed for js+CSS exploring CSS further risks of javascript extra benefits javascript can bring looking into relevent future scribus developments multimodel approach being adopted for importing pdf into scribus what is left to do actions set a date for the next animation and scripting developers meeting.

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Dev meeting tomorrow !
by Marc Jeanmougin 08 Sep '20

08 Sep '20

Hi all ! Our next dev meeting will take place tomorrow (Sep 1st) at 5pm UTC (7PM Europe) -- Marc

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Inkscape 1.0.1
by Marc Jeanmougin 08 Sep '20

08 Sep '20

Inkscape 1.0.1 ============== Inkscape 1.0.1 is now released. You can download it at: https://inkscape.org/release/inkscape-1.0.1/ then, if you want to support Inkscape, donate to the project at: https://inkscape.org/support-us/ ---------------- Inkscape 1.0.1 is mainly a stability and bugfix release. It also comes with a few new features that hadn't been stable enough to make it into Inkscape 1.0: * Selectors/CSS dialog is now available * Experimental color-managed PDF export through Scribus * Many crash fixes and bugs fixed ----------------------------- Join an Inkscape project team ----------------------------- Inkscape is always happy to welcome new contributors in various areas: code, docs, translation, UX, bug triaging, or even outreach! The main ways to get involved are listed on https://inkscape.org/contribute/ and you can get in touch with us on https://chat.inkscape.org/ Thanks to everyone involved in this release! -- The Inkscape team

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Mario Voigt - about perspective
by Andrew Kurn 05 Sep '20

05 Sep '20

This is first to say 'thanks' to Mario Voigt for updating the Clonesp extension. I'm busy these days, so I'm not keeping up with what I should be doing for Inks. However, it seems to me that the fact that there are now two developers on this project means that it should go to Gitlab (or a similar). I hardly know anything about Gitlab, so I don't know where to start. If someone would like to give me a pointer or two, I could try to get that going. Or if someone can simply do it for me (and Mario) that would be welcome. Andrew

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unless there are any objections
by NASA Jeff 04 Sep '20

04 Sep '20

I'm going to raise a bug for a developers meeting to discuss animation and a couple of other related topics I have on the backlog. I've already had a chat with a few developers and got some feed back from other interested parties as well as having long discussions with a-l-e from the Scribus team so I can pretty much fill out an agenda, but I'm open to suggestions.

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