I've since done that, and have used as input to the icicle macro I have used 
the successful tests of the snow macro, thus limiting the input of invalid 
vectors to the icicle macro, and reducing falied tests.

The only issue that this has created has been arrays of unknown length, 
which are difficult to loop against.

ian

"Bridgeofstraws" <bri### [at] inboxcom> wrote in message 
news:web.49a2001f783ea6738ce5254b0@news.povray.org...
> "[GDS|Entropy]" <gds### [at] hotmailcom> wrote:
>> Hello,
>>
>> I am working on a snow/icicle macro currently, and due to certain issues
>> that I have faced, my code has forked....which is not at all what I 
>> desire.
>>
>> I have three problems. Two have been solved individually by the fork, but
>> must be integrated to be truly considered "resolved". The third, I 
>> haven't
>> any clue how to approach. I shall elucidate:
>>
>> 1) Icicles not "blobbing" together (solved in SnowTest_2)
>>     The solution to this problem required that I estimate the size of the
>> bounding   box resulting from the application of snow to an object 
>> X...but
>> resulted in initial blob placement insufficiencies.
>>
>> 2) Initial blob placement errors (solved in SnowTest_3)
>>     The solution to this issue required the actual min/max extents of 
>> first
>> the initial object, and secondly of the union of the snowed on object and
>> the snow. This resulted in the inability to blob the icicles together as
>> found in nature.
>>
>> 3) Blobbing of the snow *and* the icicles. This is unresolved.
>>
>> What I am left with, are essentially two issues:
>> A) How to integrate SnowTest_2 and SnowTest_3 so that the icicles both 
>> blob
>> together AND are positioned accurately, to be used in the solution to (B)
>> B) How to blob (A) with the initial snow.
>>
>> As is, the parse time for my snow macro *with* icicles is 1 second in one
>> method, and slightly longer in the second.
>>
>> I know that I am so close to the solution that it hurts, but I've been
>> looking at it so long I can't see the forest for the trees.
>>
>> I will post the source files required to evaluate this issue in p.b.s-f
>> (same thread name), and successful contributors to the unified resolution 
>> of
>> these issues shall be credited in the final release....I'm almost there! 
>> :-D
>>
>> To those who wish to assist, please comment any references to SnowTex0 
>> and
>> Ice2 and uncomment the vector pigments within the snowTest and icicleTest
>> macros, to avoid long renders. I have included the snow texture include
>> file, just for S's and G's.
>>
>> many thanks,
>> ian
>
> Just an idea but would it be possible to make an array containing the 
> positions
> of the blobs for the icicles and the snow.  Then using this array make a 
> single
> blob using all of these positions.  I`m afraid I didn`t look at the code 
> yet so
> if this makes absolutely no sense, please forgive me.
>
> Bridgeofstraws
>
>
>

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