Rahul,
Null object and identity detection are indeed a couple tree-pruning
optimizations you can perform on a given CSG tree. There are other
optimizations possible as well including tree contraction and
simplification. You can also get accelerated performance by
pervasively taking advantage of SIMD instructions, keeping data cache
coherent, and vectorizing the calculations. Another possibility is
utilizing the video card as a GPGPU vector unit, but that has various
limitations for production code, robustness, and maintainability.
I'm not quite sure what you mean by negative object detection myself
other than it sounding like some variant of null object detection (if
it's only negative, it doesn't exist). So I can't exactly point you
at anything for that. As this is a pretty difficult task, what about
it exactly interests you? Why that task over the 20 or so other
ideas and how would you intend to integrate any modification into BRL-
CAD?
Cheers!
Sean
On Mar 16, 2009, at 1:47 PM, Rahul Singhal wrote:
hi Christopher,
I have been reading about csg ray trace from net material and some
publish papers.In that they have given two detections -null object
detection and same object detection . But they have not given
anything about negative object detection.So please guide me.
On Sat, Mar 14, 2009 at 10:00 AM, Christopher Sean Morrison
<[email protected]> wrote:
Hello Rahul,
Glad to hear about your interest. The status of that project is
pretty much unchanged from last year. It's still a cool (and
difficult) project that has the potential to greatly improve our ray
trace performance. If that's a project that interests you, then it
would be interesting to hear what exactly you have in mind.
You most definitely should start talking to the mentors early and
often. Thanks for taking the initiative.
Cheers!
Sean
On Mar 12, 2009, at 2:35 PM, Rahul Singhal wrote:
> hi all,
>
> i wanna take part in gsoc 2009. i have seen the list of ideas
> proposed last year.Among these topics i have seen that "csg ray
> trace optimisations" is not being done last year and it was high
> priority topic.I am interested in this topic for gsoc 2009.I want
> to know that what is the progress status of this project?Will this
> topic would be on this year ideas list??
>
> It is written that for accepting the proposal you should start
> talking to the mentors early but here the list of roughly new ideas
> have not yet been announced so how can we will discuss with the
> mentors?
>
> thanks,
> --
> Rahul singhal
> B.Tech. PART IV
> Department of Computer Engineering
> NIT Kurukshetra
> Kurukshetra
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Rahul singhal
B.Tech. PART IV
Department of Computer Engineering
NIT Kurukshetra
Kurukshetra
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powering Web 2.0 with engaging, cross-platform capabilities. Quickly and
easily build your RIAs with Flex Builder, the Eclipse(TM)based development
software that enables intelligent coding and step-through debugging.
Download the free 60 day trial. http://p.sf.net/sfu/www-adobe-com
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