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Dev Meeting Presentation on Tuesday, Dec 22nd
by Thomas Holder 20 Dec '20

20 Dec '20

Hi devs, I'll give a short presentation about "Assertions and Warnings" at the next developer meeting on Tuesday, December 22 (in two days). Hope to see you there! Dev Calendar: https://inkscape.org/cals/event/1/ Meeting Link (as usual): https://digimedia1.r2.enst.fr/b/mar-9wm-vj2 Thomas

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Developer presentations
by Thomas Holder 20 Dec '20

20 Dec '20

An idea I brought up in today's developer meeting: Developer presentations to share knowledge, experience, and to promote best practices. Schedule: Either as part of the weekly developer meetings, or as a separate event. E.g. once a month. Ideas for topics: * Warnings and Assertions best practices * std::move and other modern C++ features * How does Inkscape's garbage collection work? * How to properly use signals (libsigc++) * Why is direct manipulation of the XML tree discouraged? * What is a node observer? https://wiki.inkscape.org/wiki/index.php/Community_Development#Developer_Pr… I'd be willing to prepare some of these topics and to host the event. I'll bring it up again in the next dev meeting, then we can maybe settle on a schedule and see who is willing to contribute with a presentation. Thomas

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wiki access
by Epper Marshall 03 Dec '20

03 Dec '20

So I started following the instructions for compiling inkscape on Windows and ran into some issues. I did figure out how to fix/get past the issues but felt like the wiki could contain the information. I created a ticket: https://gitlab.com/inkscape/inbox/-/issues/4112 but was wondering if I could get wiki access to update the wiki. Or if someone else wants to update the wiki that would be great too. Regards Epper Marshall

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openswatchbook hijacked
by Nozz 01 Dec '20

01 Dec '20

Hi, when saving svg in inkscape 1.0.1, the file contains a link to openswatchbook dot org and that website appears to have been hijacked and is serving porn and possibly malware. I'm new to inkscape so I was curious what that address is about and why it's in the generated svg file. If you could explain why a svg file needs url links in the first place I would love to know. I don't know what relationship inkscape has with that website but you should contact whoever you think is the original owner and let them know of the situation. Best regards

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Backports into 1.0.2
by Marc Jeanmougin 28 Nov '20

28 Nov '20

Hi team, If you have ideas or proposals to backport stuff that is already in master, and want it into our next 1.0.2 release, could you mention it in https://gitlab.com/inkscape/inkscape/-/issues/2067 Input from the bugs team would be particularly appreciated in this matter :) Thanks everyone! -- Marc

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finally, finished using boolean operators
by NASA Jeff 15 Nov '20

15 Nov '20

finally, i finished off by trimming the lhsf eyebrow to the face using boolean operations. I couldn't seem to get them to work how I wanted, to trim the eyebrow bit. And selection order didn't seem to change the precedence in the boolean operation. In the end I ended up doing a copy and paste replacing the face, then a copy of the eyebrow with no paste, then the boolean operation between the eyebrow and one face copy, then paste from the eyebrow copy the style (opacity/blur didn't seem to copy, just the colour, not sure it stroke styles copied or not), then deleted the original eyebrow. And renamed everything correctly again using the XML editor. I noticed you can't do a multiple select in the XML editor, only select a single element. So, I think I'll raise three bugs from this, boolean operation precedence, style paste not pasting blur and transparency and maybe stroke styles etc.. and inability to select multiple shapes/groups via the XML editor dialogue. I'll leave the snapping as an enhancement to look into and not raise as a bug as the enhancement I suggested may be best as a different snap modulator.

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path snap
by NASA Jeff 15 Nov '20

15 Nov '20

As I mentioned in my last email, I found snap to path, but it didn't work that great. It seemed to fit curve to a curve well some of the time and didn't seem to snap vertices to the path curve. What would be great is if it could snap a curve to a curve all of the time by inserting vertices as needed to make the snap happen. I'm also going to play around with grow and shrink, to see if that's a better option for multilayer hair, that just adjusting the paths manually. There would still be some alignment of paths between objects with higher/lower z-orders needed and it still wouldn't solve the eyebrow problem. I may end up just doing a boolean operation.

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found path snap
by NASA Jeff 15 Nov '20

15 Nov '20

I found path snap and it worked okish, though not that great. An example of where matching two paths is required because you can't just use z-order and have a blob underneath is the eyebrow, where I have a semi transparent top layer for the hair and an opaque background that has to be beneath or fit the face and above or fit the eyebrow. https://imgur.com/4oHHL6Z

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simple edge detection of a bitmap
by NASA Jeff 15 Nov '20

15 Nov '20

I can't remember exactly how to do an edge detection mask for a bitmap but it's something like 0 -1 0 -1 0 -1 0 -1 0 as a matrix applied to the bitmap, this has issues with jpeg compression though as you get square artefacts from the lossy-ness of the compression, soi it may be an idea to detect the compression window for the jpeg image and use that to scale the matrix. I believe jpeg compression is more or less just an inverse fast Fourier transform.

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Here's the image I've drawn
by NASA Jeff 15 Nov '20

15 Nov '20

https://svgshare.com/i/RUo.svg Some curves I've hand fitted to each other and some I've just relied on z-order with a cruder edge for the lower shape. I'm not sure how well relying on using z-order to account for matching detail of the edges of paths would work if we wanted to animate the shapes. e.g. make the dress and hair move as if the wind was blowing.. Incidentally, this svg renders funny in chrome, I've added some blurred, semi-transparent detail on a higher z-order than the base image but it's not showing... Here's a png exported from inkscape.. https://imgur.com/j8mDI6b

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