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Objects ("patterns") along path - pathscatter extension
by Hans Meine 11 Jan '10

11 Jan '10

Hi, background: I want to model some room with rows of chairs, not necessarily along straight lines however. Furthermore, I want to be able to access each chair from python, in order to change appearance depending on status in a reservation system. Thus, I have been looking into an "create objects along path" functionality, and found the pathscatter ("Generate from Path/Pattern along Path") extension, plus some "path effect" which I could not get to work and did not find any documentation on. I also had a lot of problems with the pathscatter extension, which I would like to discuss with you and possibly provide fixes for at least some of them. (I am an experienced programmer, in particular with python, but not very familiar with inkscapes code or even GUI yet.) First, my impression was that the extension is slow (I think there's a lot of potential for improvements, since it looks like a straightforward but not very efficient python implementation) and not very well integrated into the GUI, which is probably a typical problem with scripted extensions (I have experience with Gimp's script-fu stuff). For instance: 1. The menu has no accelerators, which makes it inconvenient to start without using the mouse. 2. It has an apply and a close button, but the apply button does not close the dialog, although the only sensible (actually: possible) action after it is close, since it modifies the selection, and the dialog is modal. 3. The dialog is modal, but does not check whether its preconditions (two objects selected) are fulfilled, so you end up making settings, getting an error message on "apply", need to close, fix the selection, and re-open it again (suffering from 1 again). 4. Also, there does not seem to be any good documentation or even help within the program (for instance: icons, tooltips or "whats this" texts, ...); the best information I found was the python comments at the top of pathscatter.py, which should probably be at least put up on some wiki page. Speaking of preconditions, it took me more than an hour to understand how to use the extension, simply because I tried it only with a rectangle as pattern. The results were incredibly... wrong. That's because the extension seems to work only with paths (that is - circles seem to work) - this could surely be improved either by a) allowing rectangles, which should be possible at least in the "snake" mode, or by b) automatically converting other objects into paths. Actually, my plan would be to implement both a+b, since I then realized that with just b) (which is probably the easiest to implement) I have yet another problem: in the "repeated" mode, I am still getting only a single path as result, which contains several path components. For my use case, I really need separate objects, in order to be able to differently style the chairs. I have some basic coding questions, which I will put into a separate posting. -- Ciao, / / .o. /--/ ..o / / ANS ooo

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Shifting UI
by Jon Cruz 11 Jan '10

11 Jan '10

I've gotten a first part of the shifting UI done. Toolbars can now be somewhat repositioned. The alternatives are hardcoded at the moment, but to see that just hit widgets/toolbox.cpp and uncomment: //#define ENABLE_TASK_SUPPORT 1 I've left that defined out for the moment in case the other cleanup did not fix the 64-bit issues. If someone can check that, it would be very helpful.

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Proposal for Voronoi Diagram extension
by Alvin Penner 11 Jan '10

11 Jan '10

This is a request for comment on a proposed extension to generate Voronoi Diagrams as a pattern. This is a follow-up to LP Bug 171901. https://bugs.launchpad.net/inkscape/+bug/171901 Details and source code are attached to that bug report (comment 4,5,6). Voronoi algorithm and code by Steven Fortune and Bill Simons. -- View this message in context: http://old.nabble.com/Proposal-for-Voronoi-Diagram-extension-tp27100645p271… Sent from the Inkscape - Dev mailing list archive at Nabble.com.

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Geom::OptRect and "warning: dereferencing pointer ‘<anonymous>’ does break strict-aliasing rules"
by Alex Leone 10 Jan '10

10 Jan '10

I get this warning everywhere an OptRect is used. For example: SPItem *item; Geom::OptRect r = item->getBounds(sp_item_i2doc_affine(item)); if (r) { Geom::Point p = r->min(); //... will give the warning "./2geom/interval.h:82: warning: dereferencing pointer ‘<anonymous>’ does break strict-aliasing rules". To fix this, shouldn't getBounds return optional<Geom::Rect>? Making an OptRect class seems the wrong use of boost::optional. To remove OptRect: isEmpty() becomes "if (optional<Rect> r)". unionWith(OptRect const &b) becomes another method in Geom::Rect, unionWith(optional<Rect> b). See http://www.boost.org/doc/libs/1_41_0/libs/optional/doc/html/boost_optional/… I'm willing to refactor to remove OptRect. Any objections? - Alex

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Getting an Inkscape generated PDF in CMYK
by JiHO 10 Jan '10

10 Jan '10

Hello everyone, I have a colour document I want to get printed by a print shop. It is a monochrome (shades of the same hue with different lightness/saturation, basically all brown) fully vector document. Currently I have the SVG exported in PDF. The print shops want a CMYK PDF, as expected. They don't seem too smart (insist on using photoshop on the PDF, don't pay much attention to the superposition of recto and verso, etc.) so I would like to do as much as possible myself. However, even with a CMYK document I guess they would still need to do a CMYK to CMYK conversion between my CMYK profile and the one of their printer. Would this be any better than going straight from my RGB to their CMYK? If I do need to convert in CMYK, I explored the possibilities. The SVG does not import correctly in Scribus so this is out of the question. I have Adobe Acrobat, which looks like it can do the conversion on the PDF. I am just not sure what it assumes as a starting colour space, if any. What would the knowledgeable people on this list advise as a workflow to get an Inkscape generated PDF in CMYK? As a related note, what is the advised workflow within Inkscape? I have a display and proofing profiles set in the preferences (NB: Jon, does the "Retrieve profile from display" works on Mac? It does not inactivate the drop down menu when checked at least, while it looks like it should.). My understanding of the 0.46 release notes is that as soon as a display profile is set, it is used, and clicking the indicator at the bottom-right corner turns soft proofing on, using the specified proofing profile. Am I right? What part of all this is currently retained in the SVG? in the PDF? Sorry for the numerous questions. I would like to get this one right. Thanks in advance, JiHO --- http://maururu.net

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Re: [Inkscape-devel] "Print colors"?
by Felipe Sanches 10 Jan '10

10 Jan '10

A friend wrote a message to this list in portuguese and asked me to translate it to english for him. Here it is: On Thu, Jan 7, 2010 at 9:32 PM, Valessio Brito <contato@...2138...>wrote: > Isto é uma boa ideia para separação de cores ou no processo de > visualização. A opção "Imprimir Cores" é legal porque se você utiliza > CMYK e cores especiais, pode visualizar quantas camadas de cores tem > seu trabalho. > > This [the print colors preview mode] is a great idea for color separation or also in the process of previewing your artwork. This is cool because it enables you to know how many color channels your artwork has (be it CMYK or spot colors). > > Acho que isso que você fez é > um grande passo para separação de cores e é bastante utilizado em > processo Silk, se colocar isso no dialogo de impressão é um sucesso. > > I think that what you [Felipe] have done is a great step towards color separations and is very frquently used in silk processes. If you add it to the print dialog it will be a success! Valessio Brito

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Re: [Inkscape-devel] [Lib2geom-devel] How to sync 2Geom?
by unknown＠example.com 10 Jan '10

10 Jan '10

> -----Original Message----- > From: Krzysztof Kosiński [mailto:tweenk.pl@...400...] > Sent: vrijdag 8 januari 2010 4:02 > To: Engelen, J.B.C. (Johan) > Subject: Re: [Lib2geom-devel] [Inkscape-devel] How to sync 2Geom? > > W dniu 31 grudnia 2009 15:36 użytkownik > <J.B.C.Engelen@...1578...> napisał: > > Yeah I agree. It's best not to update Inkscape's 2geom > copy, unless you are sure some bug got fixed or you need a > newer 2geom. > > Also, note that Inkscape's copy does not (and shouldn't) > contain all 2geom's files. > > OK, but how it is done? :) Do you use some script or copy the > files manually? I use JFileSync: http://jfilesync.sourceforge.net/

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Inkscape keeps crashing
by Alexandre Prokoudine 10 Jan '10

10 Jan '10

On revision 8938: Program received signal SIGSEGV, Segmentation fault. 0x000000000047c747 in persp3d_VP_is_finite (persp_impl=0x0, axis=Proj::X) at persp3d.cpp:331 331 persp3d_VP_is_finite (Persp3DImpl *persp_impl, Proj::Axis axis) { (gdb) bt #0 0x000000000047c747 in persp3d_VP_is_finite (persp_impl=0x0, axis=Proj::X) at persp3d.cpp:331 #1 0x00000000007191ba in box3d_toolbox_prep (desktop=0x1997c00, mainActions=<value optimized out>, holder=0x2905b40) at widgets/toolbox.cpp:3464 #2 0x000000000070d2ff in setup_aux_toolbox (toolbox=<value optimized out>, desktop=0x1997c00) at widgets/toolbox.cpp:1745 #3 0x00000000006fe485 in toolbox_set_desktop (toolbox=0x1144e70, desktop=0x1997c00, setup_func=0x70d070 <setup_aux_toolbox>, update_func=0x6fe750 <update_aux_toolbox>, conn=0x28fde80) at widgets/toolbox.cpp:1635 #4 0x00000000006d96a1 in sp_desktop_widget_new (namedview=0x1f78030) at widgets/desktop-widget.cpp:1378 #5 0x00000000004627b4 in sp_file_new (templ=<value optimized out>) at file.cpp:129 #6 0x0000000000462aee in sp_file_new_default () at file.cpp:177 #7 0x0000000000453ef7 in sp_main_gui (argc=1, argv=0x7fffffffe3f8) at main.cpp:949 #8 0x0000000000453419 in main (argc=1, argv=<value optimized out>) at main.cpp:689 Maximilian? :) Alexandre

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"Print colors"?
by bulia byak 08 Jan '10

08 Jan '10

I just noticed this new view mode and dialog. Guys, if you do anything remotely as newsworthy as this, PLEASE describe it in Release notes AND post to devel list to discuss. That said, I'm really not sure it's a good idea to make this a view mode, next to Outline and No filters. The modes are there primarily for speed, but this one has entirely different goals. I've never seen this implemented like that in other programs and I think it's for a reason. If you're interested in print preview, just set it up once, in a dialog/tab of its own. For those 95% users who don't need it, it will just make view modes much harder to figure out. As for the dialog, apart from the fact that it shouldn't be called from view modes submenu, it really looks strange with its 4 buttons and nothing else. Is it supposed to be that way? Can we make it more useful? -- bulia byak Inkscape. Draw Freely. http://www.inkscape.org

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Fit page to selection margin options
by Nicolas Dufour 08 Jan '10

08 Jan '10

Hi, Alex Leone has attached a patch which add margin options for the "Fit page to selection" button in the document properties. I've tested it successfully on Ubuntu 9.10, but it would be nice if a C++/UI expert review the code before we commit it (see https://bugs.edge.launchpad.net/inkscape/+bug/499942). Regards, -- Nicolas

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