October 2011 - Inkscape Devel

Mesh Gradients in Inkscape
by Tavmjong Bah 09 Nov '11

09 Nov '11

Hi, I have just checked in to my private Coons Patch Mesh Gradient branch, code that allows the ability to create and edit mesh gradients. Warning: This code is a real Hack. It is known to segfault and eat kittens for lunch. It will need lots of reworking by real experts before one can hope to see it in Inkscape trunk (as well as dealing with the issue that meshes are not part of the SVG 1.2 standard... they have been accepted as part of SVG 2.0 but that standard is along way from being appearing even in a draft form). What you can do with the code: 1. Create a simple one patch square mesh the size of an objects bounding box. (Select the third button on the Gradient Tool-Tool Bar and the double click the object.) 2. Drag corner nodes (diamonds). 3. Change color of corner nodes. 4. Drag handles (circles). There is no indication of what handle belongs with which corner node or path so it can be confusing. 5. Divide a row or column of patches into two rows or columns. (Double click on the lines connecting corner nodes. Double clicking elsewhere may lead to a crash.) At the moment, the row or column is split down the middle. 6. Save the mesh. The mesh is saved in the proposed SVG standard format (highly likely to change). 7. Read in saved meshes. Some of what is missing: 1. Ability to undo node moves/color changes. 2. Ability to merge two rows or columns into one or delete edge rows or columns. 3. Ability to change paths between straight lines and Bezier curves. Handles are shown even for straight lines. 4. Display of Bezier curves (they are shown as straight lines). 5. Stability (I did tell you it will segfault, didn't I?). 6. Sane coding. 7. Properly handling of gradient copying. 8. Auto-creation of conical gradients or other non-square gradient types. 9. Output to PS/PDF/PNG(?) 10. Update to current trunk. You can check out the code at: https://code.launchpad.net/~tavmjong-free/inkscape/mesh Tav

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SVG Open 2011
by Tavmjong Bah 01 Nov '11

01 Nov '11

Hi, Jasper and I were able to represent Inkscape at SVG Open 2011 in Boston thanks to financial aid from the conference organizers. I gave two talks, one on Inkscape's currents status and another on the state of Mesh gradients in the SVG working group. Jasper gave a talk on separating gradients from geometry. Papers/slides for the talks can be found at the SVG Open website (www.svgopen.org/2011). We also were able to attend an SVG working group meeting after the conference where we discussed mostly mesh gradients and connectors. There were many interesting talks despite attendance being a bit lower than last year (maybe due to the very high cost of hotel rooms in Boston?). A few notes from the conference: 1. Microsoft is finished with their SVG 1.1 implementation. They will not support SVG Fonts nor SMILE animation. SVG Fonts will also not be supported by Firefox (old news). There is a move to get SVG fonts packaged inside OpenType. This would satisfy the need to support complex writing systems like Hindi. There is broad interest in this solution as it would allow, for example, multi-color fonts. SVG 2.0 will also likely include an API to get glyph outlines so the shapes can be manipulated. Microsoft is interested in animation but wants to see SVG and CSS unite on a common animation framework. Currently CSS3 Animations lack the power of SVG SMILE (which is only a subset of the complete SMILE standard). Unfortunately, JavaScript cannot always be used due to security restrictions. 2. JavaScript has gotten wickedly fast. This was demonstrated multiple times, most dramatically by the D3 JavaScript data visualization library. The examples shown in the D3 talk were very impressive. See: http://mbostock.github.com/d3/ Tav

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Fwd: Inkscape Wiki page User testimonials has been changed by Simarilius
by unknown＠example.com 31 Oct '11

31 Oct '11

My first reaction to this edit is that someone is afraid of some well stated reasons why Inkscape come up short for a particular individual. The posting has been on the wiki for over five years. Have the import/export capabilities of Inkscape been improved since then? That is, is it possible "Grant" cold now use Inkscape for his/her purpose? I wish we could get "Grant" to provide some contact information on http://wiki.inkscape.org/wiki/index.php/User:Grant and encourage him/her to try again if the capabilities have been improved. Are you there, Grant? ---------- Forwarded message ---------- From: MediaWiki Mail - acspike@...34... Date: Mon, Oct 31, 2011 at 2:35 PM Subject: Inkscape Wiki page User testimonials has been changed The Inkscape Wiki page User testimonials has been changed on 31 October 2011, see http://wiki.inkscape.org/wiki/index.php/User_testimonials for the current revision. See http://wiki.inkscape.org/wiki/index.php?title=User_testimonials&diff=0&oldi… for all changes since your last visit.

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Wiki log in failure
by unknown＠example.com 31 Oct '11

31 Oct '11

My username is being changed from "NeoPhyte_Rep" to "NeoPhyte Rep" as I log into the wiki (the underscore becomes a blank). Hence, I can't log in. Has there been some change that would cause this to happen?

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(no subject)
by Leo Jackson 30 Oct '11

30 Oct '11

Josh, Alex, I revert changes, turning those PPAs back on. I will do what Alex said. I will also fix my mistakes. And change them back to the way they were. With the changes Alex said. Regards, Leo Jackson

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The Maverik and Lucid builds
by Leo Jackson 30 Oct '11

30 Oct '11

To All, For the Maverik and Lucid builds I will have to look into the backports for changes will take a bit to set up. I will have them shortly just want them to build the first shot. Regards, Leo Jackson

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libpng14/15 config detection and/or compile support
by Jeff Kowalczyk 30 Oct '11

30 Oct '11

If there is any way to support compilation of inkscape trunk on a system with libpng15 installed? On Gentoo Linux ~amd64, I have libpng 1.2, 1.4 and 1.5 installed in independent slots. Config detects and tries to compile with 1.5, even though that API is not yet compatible with inkscape, it seems. https://bugs.launchpad.net/inkscape/+bug/721029 I've usually been able to run inkscape trunk, my sincere thanks to all involved for keeping the build at such a consistently high level over several years. Thanks, Jeff

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cppcheck
by Johan Engelen 30 Oct '11

30 Oct '11

Hi all, Kris has been improving our code using hints from cppcheck. I have started to use this program too, and already found some bugs with it. It seems like a really great program, and I encourage you to have a look at our code with it. Windows devs: yes this program has a nice Windows GUI ! Cheers, Johan

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2geom modification
by Josh Andler 28 Oct '11

28 Oct '11

Hey all, It appears that the 2 last commits made to trunk had modified files in the 2geom directory. Unfortunately these modifications were done in our in-tree copy only which is effectively forbidden. This message is just a friendly reminder to everyone that the process is that changes are to be made upstream in lib2geom and then brought into Inkscape's copy. Jon, if you do not have commit access to lib2geom please submit a diff of your changes as soon as you can. Cheers, Josh

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stable ppa
by Alexandre Prokoudine 28 Oct '11

28 Oct '11

Hi, Does anybody know why we have no packahes in https://launchpad.net/~inkscape.dev/+archive/stable ? Alexandre Prokoudine http://libregraphicsworld.org

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