Christian Froeschlin <chr### [at] chrfrde> wrote:
> Very impressive!
>
> So, if these are blobs the roughness is just texture?
>
> Reading up a bit on Voronoi diagrams I found this
> entertaining interactive web application:
>
> http://www.pi6.fernuni-hagen.de/GeomLab/VoroGlide/

Very entertaining.

One interesting tidbit I had found about the Voronoi digrams when I had looked
at them a few years ago, is that they can be defined by projecting each point
vertically to a hyperboloid and defining a plane tangent to the hyperboloid at
this point.  The voronoi diagram of a set consists of the intersections of these
planes.

-tgq

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On Mon, 04 Apr 2011 22:57:25 +0200, Trevor G Quayle  
<Tin### [at] hotmailcom> wrote:

> Christian Froeschlin <chr### [at] chrfrde> wrote:
>> Very impressive!
>>
>> So, if these are blobs the roughness is just texture?
>>
>> Reading up a bit on Voronoi diagrams I found this
>> entertaining interactive web application:
>>
>> http://www.pi6.fernuni-hagen.de/GeomLab/VoroGlide/
>
> Very entertaining.
>
> One interesting tidbit I had found about the Voronoi digrams when I had  
> looked
> at them a few years ago, is that they can be defined by projecting each  
> point
> vertically to a hyperboloid and defining a plane tangent to the  
> hyperboloid at
> this point.  The voronoi diagram of a set consists of the intersections  
> of these
> planes.
>

So what does it look like?
The closest thing I can think of according to your description is  
mushrooms without stalks or matbe flying saucers...?


-- 
-Nekar Xenos-

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On 4/4/2011 12:01 AM, Thomas de Groot wrote:
> Better and better!
>
> You know, Sam, this is very like RL. I just cannot help myself to see a
> river bed here. I hope you will develop further along these lines. Great
> work, as usual.

I'll definitely be following up on this idea. There are so many avenues 
to take though...

I'm now using the system to evaluate points between frames, to space 
them apart. I was able to work on 2,048 points for 15 frames, and it 
took a little over a minute to parse/render @512x512, with 2 
light_sources. As it turns out, calling another program by using an ini 
file is very easy.

Pretty soon I'll finally be able fill objects with actual 
non-intersecting spherical shapes... Gumball machine, here I come!

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On 4/4/2011 1:57 AM, Bill Pragnell wrote:
> This looks awesome, and the technique is very elegant! I look forward to further
> developments.

Thanks! There are so many neat things neighborhood testing can be used 
for, but I'm trying to stay focused on just a few for now.

> I think it could be adapted to make excellent drystone walls.

Yep, it sure can. The input points can even be taken from a mesh, which 
means any stone wall/building can be modeled in another program.

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On 4/4/2011 9:36 AM, nemesis wrote:
> so very awesome. We can always say the floating particles were actually
> caught midair from a fall.

Sure...

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On 4/4/2011 12:54 PM, Christian Froeschlin wrote:
> Very impressive!

Thanks!

> So, if these are blobs the roughness is just texture?

Yeah, but since they are blobs, extra detail can always be added with 
other, smaller elements.

> Reading up a bit on Voronoi diagrams I found this
> entertaining interactive web application:
>
> http://www.pi6.fernuni-hagen.de/GeomLab/VoroGlide/

It's pretty cool. I like how it generates a convex hull for all points.

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On 4/4/2011 5:54 AM, Paolo Gibellini wrote:
> I like e lot the colors of these grains.
> ;-)
> Paolo

Yeah, the coloring is much more realistic than the other examples...

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stbenge wrote:

>> So, if these are blobs the roughness is just texture?
> 
> Yeah, but since they are blobs, extra detail can always be added with 
> other, smaller elements.

It wasn't a criticism, I was just frustrated that even
your test objects look better than what I get if I try
to render a stone ;)

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On 05/04/2011 9:11 PM, Christian Froeschlin wrote:

>
> It wasn't a criticism, I was just frustrated that even
> your test objects look better than what I get if I try
> to render a stone ;)

LOL I know what you mean. ;-)

-- 
Regards
     Stephen

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On 4/5/2011 1:11 PM, Christian Froeschlin wrote:
> stbenge wrote:
>
>>> So, if these are blobs the roughness is just texture?
>>
>> Yeah, but since they are blobs, extra detail can always be added with
>> other, smaller elements.
>
> It wasn't a criticism, I was just frustrated that even
> your test objects look better than what I get if I try
> to render a stone ;)

I didn't take it as one :)

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