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Re: [Inkscape-devel] Gradient Meshes
by bulia byak 22 Mar '04

22 Mar '04

>Now, the question is: Is this useful? Do you think it's just a >half-assed gradient mesh or is it something that extends the artistic >tools available in Inkscape? My IMHO is that while this is nice and cool, it would not be very useful in my design work. I think that the important thing is to get the essentials right, and then users can build their own complex things from these essentialas. With regard to gradients, here's what is still glaringly missing: - elliptic gradients (that can be rotated, with both axes adjustable) - non-linear gradient functions (currently all gradients are linear, which often looks too crude and artificial) - on-canvas editing of gradients When these things are done, I will be almost happy. It will be relatively easy then to emulate most meshes, fields, etc. by overlaying semitransparent elliptic gradients. What would satisfy 100% of my gradient needs is stroke patterns, i.e. the ability to paint a stroke with repeated copies of objects. I would then take a circle with circular transparency gradient and repeat it along a path, to receive a blurred stroke that can be given any shape and combined with other blurred strokes for any gradient-mesh-like effects. Besides stroke patterns, this also requires fixing this bug: http://sourceforge.net/tracker/index.php?func=detail&aid=859579&group_id=93… Still another alternative is a support of SVG filters, most importanly gaussian blur. If you can take arbitrary shapes and blur them into transparency, then again, it'll cover most uses of gradient meshes, and will potentially be more convenient. This is just an IMHO. Others may love to have the gradient meshes in Inkscape and will find unique uses for them, but I'm speaking from my design experience. _________________________________________________________________ MSN Premium: Up to 11 personalized e-mail addresses and 2 months FREE* http://join.msn.com/?pgmarket=en-ca&page=byoa/prem&xAPID=1994&DI=1034&SU=ht…

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Gradient Meshes
by Ted Gould 22 Mar '04

22 Mar '04

Okay, Mental a few nights ago put out the question: Can we do gradient meshes with standard SVG? So I've been thinking about it. Here is my idea. (also, I went into Illustrator, made a gradient mesh and exported it as SVG. Illustrator just renders it as a bitmap in the SVG file. I'm seriously unimpressed with the Adobe folks, I expect more) Okay, so we can think of a gradient mesh as points of color that are adjustable in their length and path of the color. There can potentially be multiple colors all over the area of the object, each contributing to a complex color created within. I think if we look at each of the points, and then divide the whole object into squares based off of those colors and the next color. So if: ------------------- | | | c1 | | | | | | c2 | | | ------------------- we can look at like: ------------------- | | | | |---c1-------------| | | | | | | | | |------------c2----| | | | | ------------------- Then, make a square for each area with the color that effects it. So there would be 4 squares with c2 and four with c1. Each of these squares would have a radial gradient that goes from the color to transparent. I think that this could also be extended to not be square shapes, so that the color could be 'turned' and expanded in odd ways through transforms of the shapes. I haven't played with this though. Anyway, we take all these squares, and then define them as a pattern for the shape. So that there can be complex shapes without us going crazy, and they can be resized and the mesh gradient grows with the bounding box. Okay, that's the idea. Thoughts? Comments? Does this do what people use gradient meshes for? I haven't played with them alot. --Ted PS - I attached a hand coded SVG file kinda showing what I'm thinking.

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Re: [Inkscape-devel] inkscape interface icons
by Peter Linnell 21 Mar '04

21 Mar '04

One more good reason for a single icon file: packaging. One of the things which has helped to make my life easier is the sane way inkscape is setup as a source tarball and a well done configure script. This made making decent rpms miles easier. If you have spent half a night chasing down missing files (sometimes icons) and fixing broken makefiles trying to build an rpm - you'll understand completely ;) Peter

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[Fwd: [cairo] Cairo SDL Demo]
by Jonathan Phillips 20 Mar '04

20 Mar '04

I keep tabs on CAIRO's list. Totally far out that you can use CAIRO with SDL and SVG. That means that games and multimedia could use SVG now. This is far out and I hope that here soon we will discuss our future plans with CAIRO developers. Jon -----Forwarded Message----- > From: Eric Windisch <lists@...277...> > To: cairo@...278... > Subject: [cairo] Cairo SDL Demo > Date: Fri, 19 Mar 2004 09:23:34 -0500 > > I spoke with Carl on IRC and decided to build a demo for using Cairo > with SDL. I don't have CVS write permission, so I'm providing a > (temporary) link to it. Maybe we will start seeing more SDL programs > using SVG now :) > > http://www.grokthis.net/~raptor/cairo-sdl.tgz > > Feedback is welcome. -- Jon Phillips Graduate Researcher Visual Arts Department PO BOX 948667 LA JOLLA, CA USA cell.858.361.2811 jon@...247... http://www.jonphillips.info

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Re: [Inkscape-devel] my win32 patch does not work, why (splivarot.cpp)
by bulia byak 20 Mar '04

20 Mar '04

Hi, we decided that the best way to unify serialization is via a C++ stream. I just checked in src/svg/stringstream.h which is a beginning of such a class that can be used already. If we use this class throughout, later it will be easy to change precision or number formatting globally for all SVG output, as well as to add custom serializers for our own classes. An example of using this class is in function sp_svg_write_path() in svg-path.cpp. You declare a variable (os) of this class and then feed it with the data you need to serialize using <<. To access the result, you call os.gcharp() which returns const gchar * of the accummulated string, and you'll probably want to also do a g_strdup on it (depending on whether it's going to be used immediately in the same function, or returned or sent elsewhere). So, if you're interested in helping out, you can start searching for printf functions that are used for serializing into SVG (in splivarot and in other places) and replace them with the stream stuff. Of course the first to replace are printfs that serialize floating point numbers. Please do one function at a time and test it thoroughly after the replacement. Do a test patch for one file, and if it works we can give you developer access to CVS to speed things up. _________________________________________________________________ MSN Premium includes powerful parental controls and get 2 months FREE* http://join.msn.com/?pgmarket=en-ca&page=byoa/prem&xAPID=1994&DI=1034&SU=ht…

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inkscape crash on startup
by David Christian Berg 20 Mar '04

20 Mar '04

Yesterday I tried to open the attached document and it wouldn't, but cause inkscape to crash. Since I created it with inkscape I thought, well, get the newest cvs and it'll be working again. but having installed todays cvs inkscape crashes on startup without any error messages of use: ** (inkscape:11051): WARNING **: Emergency save activated Emergency save completed. Inkscape will close now. If you can reproduce this crash, please file a bug at www.inkscape.org with a detailed description of the steps leading to the crash, so we can fix it.Segmentation fault At least I this doesn't help _me_. I hope someone can help me... maybe find an error in the svg code, so that I could at least open it with sodipodi (which still starts up) or anything... I need to finish that flyer over till monday and it really bothers me that I can't open it right now. Thanx in advance David

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Passpartout and Inkscape
by Bluefuture 20 Mar '04

20 Mar '04

It could be useful a collaboration between Passpartout (a GTK DTP projects like scribus) and Inkscape in particular for this todo point: * Simple graphics directly in passepartout, probably as a subset of SVG, as well as being able to import SVG graphics. Passpartout home page: http://www.stacken.kth.se/project/pptout/ For contact Passpartout developer managers: Fredrik Arnerup <e97_far@...270...> and Rasmus Kaj <kaj@...270...>. Regars. Blue

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Re: [Inkscape-devel] one more :)
by bulia byak 19 Mar '04

19 Mar '04

>mmmhh, maybe. one of the "speedup" i put was to delay >uncrossing of polygons until they appear in the >visible part of the canvas. the reason was that i add >to open some huge svg files (thousands of elements, >lots of text; automatically generated) and at high >zooms it was still extremely slow, because it was >computing all the polygons, even the ones outside of >the visible portion of the canvas. of course, delaying >the computation means you have a slowdown each time a >new polygon enters the visible area, instead of a >unique slowdown at zoom time. if that behavior bugs >you, comment the line in nr_arena_shape_update() where >shape->delayed_shp is set to true; that way you'll >deactivate delaying. I certainly do not want to desactivate any speedups you're working on :) Instead, I worked around this by increasing the delay which governs accelerated scrolling from 1/8 to 1/4 sec. Previously if some redraw took more than 1/8 sec, it dropped the accumulated acceleration. Now it scrolls smoothly again (at least for keys.svg in fullscreen, which is a rather complex file). _________________________________________________________________ Add photos to your messages with MSN Premium. Get 2 months FREE* http://join.msn.com/?pgmarket=en-ca&page=byoa/prem&xAPID=1994&DI=1034&SU=ht…

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small gradient editing improvements
by bulia byak 19 Mar '04

19 Mar '04

In the linear and radial gradient panes of the Fill and Stroke dialog: * You can press Ctrl while dragging handles to snap the linear gradient angle to 15 degrees increments (makes it easy to create strictly horizontal/vertical gradients). * The handles, bounding box, and gradient axes now use inversion for better visibility. * The default linear gradient now goes through the center of the object. * The radial gradient displays a radius handle for adjusting the gradient radius. _________________________________________________________________ Add photos to your e-mail with MSN Premium. Get 2 months FREE* http://join.msn.com/?pgmarket=en-ca&page=byoa/prem&xAPID=1994&DI=1034&SU=ht…

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inkscape interface icons
by Jonathan Phillips 19 Mar '04

19 Mar '04

Hello All, I'm now well versed in how to implement new icons in Inkscape. If you design icons and would like to help develop an excellent icon theme for Inkscape, then either A.) jump on chat and I can show you how to edit icons, and/or B.) Make your icons and forward them to me and I will implement them. There are plenty of icons left to designed. Don't forget that artists are developers as well... I'm moving all icons in the application to icons.svg which is by default at: /usr/local/lib/inkscape/icons/icons.svg If you open that file up and copy how those were laid out, and then name the group of the file icon uniquely, that is the best way to understand how to add/edit icons. Forward me any changes and I'll add them into the app. Jon -- Jonathan Phillips <jon@...15...>

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