Re: [PyOpenGL-Users] OpenGLContext 2.0 on the way, status update, requests?

[<il...@ya...>]

Excellent!

Sounds really cool.  I hope you can get the shadow
volumes are in the release?

The logging of OpenGL.GL commands sounds really useful
too :)

What is a visitor pattern?



 --- "Mike C. Fletcher" <mcf...@ro...> wrote: >
I've spent the last few weeks working on
> OpenGLContext, and am getting 
> to the point where an early 2.0 release is becoming
> visible somewhere on 
> the horizon.  This message will serve as a heads-up
> regarding the new 
> development work.  I'm also wondering if there are
> particular things 
> that people would like to see in the package's next
> iteration.  I've 
> been working primarily on the scene graph package
> (and a few new 
> supporting packages)
> 
> Here's a quick summary of what's changed...
> 
>     * have moved to 2.2.x+ (the new stable Python
> version)
>           o has significantly simplified the code
> base
>           o have moved away from the mcf.vrml code
> base for providing
>             VRML functionality, am using a much
> smaller custom-written
>             vrml package (including a more robust
> parser).
>           o nodes are now new-style Python objects
> with fields being
>             property sub-classes
>           o means that anyone using the package
> needs to upgrade to
>             2.2.x (preferably 2.2.2), though the old
> version (1.0) will
>             continue to be available for earlier
> Python versions.
>     * have moved to a visitor pattern for all
> rendering traversals
>           o means that the rendering algorithms tend
> to be localized in
>             a single file, with only small bits of
> functionality added
>             to the individual node-classes
>     * have just completed the base work for a
> stencil-shadow-rendering
>       pass-set and supporting objects
>           o is basically functional, though there
> are a number of fairly
>             common cases which need to be dealt with
> before it can be
>             considered finished
>     * have added support for more of the VRML97
> background node
>     * threaded image loading is working
>     * the new scene graph implementation includes
> generic caching
>       facilities (based on field-watchers, which are
> in turn based on
>       the new field classes and the dispatcher
> module)
>     * lights are now properly positioned within the
> scene graphs
>     * switches are implemented
>     * integrated node-path objects provide both
> forward and backward
>       manual transformation-matrix calculations
>     * there are display list and texture helper
> objects for managing
>       resource life-cycles
>     * there are a few new debugging tools
>           o save the depth buffer or the stencil
> buffer to a PIL image
>           o log OpenGL.GL commands to sys.stderr
>           o helpers to track changes to OpenGL state
> 
> I'm probably still a few weeks away from a first 2.0
> alpha release, so 
> there is still time for feature requests.  Let me
> know what you want to 
> see (within reason, I'm not looking to double the
> length of the project 
> or anything).
> 
> Enjoy yourselves,
> Mike
> 
> _______________________________________
>   Mike C. Fletcher
>   Designer, VR Plumber, Coder
>   http://members.rogers.com/mcfletch/
> 
> 
> 
> 
> 
>
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