Chris Huff wrote:
> 
> I had done a pattern blurring patch before, but got stuck trying to
> figure out a good way to get smooth blurring without a huge number of
> samples. I don't know how suitable it is for isosurfaces, there are
> still areas with infinite gradient. I think I can figure out a way to
> get smooth blurring, though...

That would be interesting, i can't imagine a method right now that would
do this without a lot of samples. Adaptive sampling would help a lot IMO,
esp. woth block patterns, but it's quite difficult to implement.  

> My patch worked differently, it was a pattern modifier, like the
> waveform modifiers. I never thought of implementing it as another
> pattern...seems like a good idea, especially in the case of block
> patterns, which wouldn't be block patterns any more after being blurred.
> I would suggest a different keyword, though..."blur_pattern", for
> example.

I don't like too much typing :-)

Seriously, i think the '_pattern' stuff started with pigment_pattern where
it's a good idea, like for warp_pattern too, but i'm not sure if that
should be continued with all patterns.  

> 
> One question: why do you still have the "grad" pattern, which should be
> possible with the "warp_pattern" pattern?

It was written before :-)
i will probably check if there is a difference in speed and take it out if
it's negligible.

> 
> Also, I would suggest that "visibility" be a separate pattern...it
> doesn't seem to fit in with the object pattern, and would be better off
> not being a block pattern. Incorporating distance would be a useful
> feature.
> 

There is already a seperate visibility pattern, but i did not yet include
it in the documentation, because it's quite preliminary.  

try:
pigment {
  visibility {
    object { test_Obj }
    direction z
  }
}

Right now the effect of the object pattern with visibility can not be
identically achieved with the seperate visibility pattern. 

Christoph

-- 
Christoph Hormann <chr### [at] gmxde>
IsoWood include, radiosity tutorial, TransSkin and other 
things on: http://www.schunter.etc.tu-bs.de/~chris/

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