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From: [GDS|Entropy]
Subject: Snownut 2011 edition - snow/icicle macro test
Date: 6 Dec 2010 02:40:03
Message: <op.vm97kkh40819q0@gdsentropy.nc.rr.com>
This actually isn't so far off from what I really want. It is amazing how  
much a year off rectifies code blindness. :)

I chose a genus 1 object (torus) because it met all testing requirements  
with greatest simplicity of implementation. I am using a very simple  
texture here, but I have a test currently rendering which uses my slope  
based snow/ice textures, but those take a very long time even without  
radiosity/photons...

Goals now accomplished (attempting to mimic nature):
1) Blobbing of icicles with each other
2) Blobbing of icicles with the main snow object
3) Ice coating of the main object
4) Speed improvements
5) Icicle/snow shape accuracy improvements
6) Macro is object agnostic
7) Macro can be applied to any area/csg

Halton distribution test is on the list now, as well as iteration  
improvements, as some effects currently take millions of iterations.  
Despite this, the parse times are quite reasonable (1-15min)...I just feel  
that this can be optimized further. This uses a single blob layer, mostly  
because you cannot have a blob of blobs. :(

Surprisingly few lines of code are required to accomplish this, and if I  
formatted my code less, and used less #local variables I could get it  
under 150 lines easily. Obviously I am counting only the macro, and not  
textures/scene objects.

I have more complicated object tests (simple recursive tree tests)  
currently rendering which I will post as follow ups.

Advice and suggestions are welcome.

Ian McDonald

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Download 'snowtest2011_4_obja_postcrop.jpg' (27 KB)

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snowtest2011_4_obja_postcrop.jpg


 

From: [GDS|Entropy]
Subject: Re: Snownut 2011 edition - snow/icicle macro test
Date: 6 Dec 2010 03:38:19
Message: <op.vm999onx0819q0@gdsentropy.nc.rr.com>
Tree.
The blobs are thicker near the top, just as in real life, though the macro  
inputs could use tweaking a little.
Slope texture version of this rendering currently.

Ian McDonald


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Attachments:
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Preview of image 'snowtest2011_4_objd_postcrop.jpg'
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From: Paolo Gibellini
Subject: Re: Snownut 2011 edition - snow/icicle macro test
Date: 6 Dec 2010 08:26:46
Message: <4cfce496$1@news.povray.org>
>[GDS|Entropy]  on date 06/12/2010 08:39 wrote:
> This actually isn't so far off from what I really want. It is amazing
> how much a year off rectifies code blindness. :)
>
> I chose a genus 1 object (torus) because it met all testing requirements
> with greatest simplicity of implementation. I am using a very simple
> texture here, but I have a test currently rendering which uses my slope
> based snow/ice textures, but those take a very long time even without
> radiosity/photons...
>
> Goals now accomplished (attempting to mimic nature):
> 1) Blobbing of icicles with each other
> 2) Blobbing of icicles with the main snow object
> 3) Ice coating of the main object
> 4) Speed improvements
> 5) Icicle/snow shape accuracy improvements
> 6) Macro is object agnostic
> 7) Macro can be applied to any area/csg
>
> Halton distribution test is on the list now, as well as iteration
> improvements, as some effects currently take millions of iterations.
> Despite this, the parse times are quite reasonable (1-15min)...I just
> feel that this can be optimized further. This uses a single blob layer,
> mostly because you cannot have a blob of blobs. :(
>
> Surprisingly few lines of code are required to accomplish this, and if I
> formatted my code less, and used less #local variables I could get it
> under 150 lines easily. Obviously I am counting only the macro, and not
> textures/scene objects.
>
> I have more complicated object tests (simple recursive tree tests)
> currently rendering which I will post as follow ups.
>
> Advice and suggestions are welcome.
>
> Ian McDonald
>
It looks /coold/ ;-)
Paolo


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