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I think a Gorgon-like quality befits a depiction of the SARS-CoV-2
agent. I'm still working on collision avoidance between the 3 types of
stud proteins, preferably faster than O(n²).
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Attachments:
Download 'show_scov-wip1.jpg' (96 KB)
Preview of image 'show_scov-wip1.jpg'
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hi,
Cousin Ricky <ric### [at] yahoo com> wrote:
> I think a Gorgon-like quality befits a depiction of the SARS-CoV-2
> agent.
:-) agree. v nice.
regards, jr.
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Cousin Ricky <ric### [at] yahoocom> wrote:
> I think a Gorgon-like quality befits a depiction of the SARS-CoV-2
> agent. I'm still working on collision avoidance between the 3 types of
> stud proteins, preferably faster than O(n²).
really nice model - did you use a pdb file or other coordinates to build the
monster?
by the way - perhaps you want to use a more dramatic or glamorous lighting and a
material to depicture the sticky properties of the hull proteins?
happy rendering
Norbert
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On 2020-04-08 9:27 AM (-4), Norbert Kern wrote:
>
> really nice model - did you use a pdb file or other coordinates to build the
> monster?
No, I don't (yet) have the tools for that. I just estimated dimensions
from images on the Web:
https://phil.cdc.gov/Details.aspx?pid=23313
https://science.sciencemag.org/content/367/6483/1260
https://commons.wikimedia.org/wiki/File:6VSB_spike_protein_SARS-CoV-2_monomer_in_homotrimer.png
That last image has some benzene rings hanging out, so I extrapolated
the size of the spike protein from those, and assumed an membrane
thickness of 4nm to estimate how much of the spike is buried in the
envelope.
It would be hard to overlay a face on top of a PDB model anyway. But
the receptor-binding domain (the projection that tricks lung cells into
admitting the virus) turns out to be in a convenient position for a horn
sticking out of a forehead.
> by the way - perhaps you want to use a more dramatic or glamorous lighting and a
> material to depicture the sticky properties of the hull proteins?
Here ya go!
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Attachments:
Download 'show_scov-wip2.jpg' (114 KB)
Preview of image 'show_scov-wip2.jpg'
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On 2020-04-07 10:06 PM (-4), Cousin Ricky wrote:
> I'm still working on collision avoidance between the 3 types of
> stud proteins, preferably faster than O(n²).
Well, so far all my attempts at algorithmic collision avoidance have
succeeded in 100% collision avoidance, but with a glaring lack of
uniform interspersion. Some of my attempts are attached. The best
looking virion is the one with no collision avoidance at all! Looks
like I will have to go brute force. (The WIPs posted above use the same
non-avoidant algorithm as space_scov_proteins0.jpg, but with jittered
spikes.)
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Attachments:
Download 'space_scov_proteins0.jpg' (38 KB)
Download 'space_scov_proteins2.jpg' (38 KB)
Download 'space_scov_proteins5.jpg' (39 KB)
Preview of image 'space_scov_proteins0.jpg'
Preview of image 'space_scov_proteins2.jpg'
Preview of image 'space_scov_proteins5.jpg'
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What if you use one of POV-Ray's pigment patterns to map the sphere's surface,
and then use eval_pigment to place the features?
Something like bozo, crackle solid, or agate might give you a decent
distribution if you just scan the sphere surface with a grid.
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