2008年（787）
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2008-09-25 16:11:46
大概：gimp没有手写板的压感支持。所以在做材质的时候十分不方便。找到一款名叫seashore的软件，支持原生的cocoa，因为在mac下面gimp是在apple开源的x11实现的接口上完成的，这个接口没有支持手绘板。在和一些gimp的开发者做了交流后，得到一些建议，但是这些都不太实际。于是想到了上述那款软件。当然也是利用gimp的内核来实现的功能。因此是开源的。希望有cocoa的开发人员来援助我们实现一些必需的功能，比如压感实现透明度等效果。注：但是，mac不是开源的。。。。。。
We’ve had a bit of a problem to solve over the last weeks, to do with texture painting on the Macs here. is one of the few open source image editors available on Mac OS X, and it works pretty well, but with one major issue - it doesn’t support tablet pressure sensitivity, which is vital for texture painting. GIMP is based on the GTK+ toolkit, which has not yet been ported to run on Mac OS X natively, so GIMP uses Apple’s open source implementation of , which does not pass tablet events through to applications.
We got in touch with some GIMP developers, who were quite helpful, giving us ideas of how to proceed, with a developer contact at Wacom sharing some hints as well. Unfortunately all the options (hacking GIMP, or X11, or paying a developer to work on a proper Mac OS X version of GTK+) were not very nice, leaving us without much luck. I then remembered a post on mentioning a little open source Mac application called .
Seashore takes the GIMP core and wraps it up in a lovely native Mac (Cocoa) user interface, and to our joy, it supports tablet sensitivity. It uses the GIMP native .XCF file format which is great - we can run both applications side by side, using Seashore for painting and if we need any extra filters or functionality that’s in GIMP, it’s just a quick save and reload away. Seashore is really early in development, and strangely enough the GIMP developers didn’t seem to know about it at all.
The code is in CVS at sourceforge, it seems pretty clean, and the filter/plug-in system seems pretty good too. There are a couple of other features that we’d like extended, such as having the tablet pressure affect size as well as opacity, which hasn’t been implemented yet. If there are any Cocoa-savvy programmers out here that would like to help us out in our mission to improve open source graphics software in production, here’s how you can get eternal fame, glory, and a warm fuzzy feeling inside :)
