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Am 17.02.2016 um 13:18 schrieb Jaime Vives Piqueres:
> The world of POV-Ray crystallography is on fire this week... after the
> discovery of Thomasite, now it's the turn of Vivesite. ;)
Great stuff!
> As the test seems to have given acceptable results, I'm going to use now
> an isosurface as the base, and try to use hexagonal crystals... if I can
> work it out: working out the maths for a cube basal I already fried one
> or two neurons...
I guess it's worth frying a few more ;)
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First test using an isosurface as base... nice, except for some ugly
artifacts on focal blur, due to a too strong light source.
--
jaime
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Attachments:
Download 'crystals-07.jpg' (88 KB)
Preview of image 'crystals-07.jpg'
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Jaime Vives Piqueres <jai### [at] ignorancia org> wrote:
> First test using an isosurface as base... nice, except for some ugly
> artifacts on focal blur, due to a too strong light source.
>
> --
> jaime
Fantastic. I've been wanting to know how to do this for years, but good crystal
geometry has been elusive.
How high do you have to set the max_trace_level?
Regards,
A.D.B.
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Jaime Vives Piqueres <jai### [at] ignoranciaorg> wrote:
> First test using an isosurface as base... nice, except for some ugly
> artifacts on focal blur, due to a too strong light source.
>
> --
> jaime
Phantastic!
Good to see something new from you, Jaime.
First I thought, it's hdr lighting, but with this artifacts...
Norbert
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On 2/17/2016 5:57 PM, Jaime Vives Piqueres wrote:
> First test using an isosurface as base... nice,
double wow with a cherry on top.
dik
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On 17-2-2016 13:18, Jaime Vives Piqueres wrote:
> The world of POV-Ray crystallography is on fire this week... after the
> discovery of Thomasite, now it's the turn of Vivesite. ;)
>
That's it! One thing maybe to watch out for is the irregular normal
pattern on the sides. I think one should distinguish between the 'growth
pattern' of the crystals and the 'inclusions' within the crystals like
residual liquids. Of course Vivesite is a totally different matter ;-)
--
Thomas
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> Fantastic. I've been wanting to know how to do this for years, but good crystal
> geometry has been elusive.
Thanks... my solution was in fact very easy. The crystal geometry is
very simple, just 14 triangles for each crystal. The growth orientation
is controlled by the surface normals, and the widths and heights of each
one are just random.
> How high do you have to set the max_trace_level?
Only 9... I found increasing it was an overkill.
--
jaime
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> Phantastic!
>
> Good to see something new from you, Jaime. First I thought, it's hdr
> lighting, but with this artifacts...
>
Thanks... yes, it has an hdr image as background, but it doesn't
contributes to lighting as I'm not using radiosity at the moment. The
lighting is just a single point light at the top, which matches the
lighting on the cave probe from openfootage.net. The problem with the
artifacts is that I used a looks_like object way too bright.
--
jaime
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El 18/02/16 a las 09:01, Thomas de Groot escribió:
> That's it! One thing maybe to watch out for is the irregular normal
> pattern on the sides. I think one should distinguish between the 'growth
> pattern' of the crystals and the 'inclusions' within the crystals like
> residual liquids. Of course Vivesite is a totally different matter ;-)
>
Yes, the normal is tricky... I used a simple "crackle solid" with
turbulence for now.
--
jaime
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This is amazing stuff. I love those mineral pictures!!!
On 17.02.2016 07:18, Jaime Vives Piqueres wrote:
> The world of POV-Ray crystallography is on fire this week... after the
> discovery of Thomasite, now it's the turn of Vivesite. ;)
Post a reply to this message
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