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with polar-coordinate.
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Attachments:
Download 'polar coor video.mp4.dat' (805 KB)
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I will post some pictures in the following days. Not very high grade，but
has reached a stage.
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"And" <49341109@ntnu.edu.tw> wrote:
> I will post some pictures in the following days. Not very high grade，but
> has reached a stage.
The basic idea here..
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Attachments:
Download 'show tree function.png' (736 KB)
Preview of image 'show tree function.png'
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And the program look.
Not very finish. But it can run, and can output file.(.pov and several .inc)
Does not contain any color_map edit or design yet. I still code them in Pov-ray
and seek a solution for the(more complex) combine.
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Attachments:
Download 'program manipulate.mp4.dat' (4394 KB)
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Op 9-5-2022 om 15:49 schreef And:
> And the program look.
>
> Not very finish. But it can run, and can output file.(.pov and several .inc)
>
> Does not contain any color_map edit or design yet. I still code them in Pov-ray
> and seek a solution for the(more complex) combine.
Really impressive indeed. I am following this development with interest.
--
Thomas
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Thomas de Groot <tho### [at] degroot org> wrote:
> Op 9-5-2022 om 15:49 schreef And:
> > And the program look.
> >
> > Not very finish. But it can run, and can output file.(.pov and several .inc)
> >
> > Does not contain any color_map edit or design yet. I still code them in Pov-ray
> > and seek a solution for the(more complex) combine.
>
>
> Really impressive indeed. I am following this development with interest.
>
> --
> Thomas
Thank you.
It needs several improve. Some are very basic but don't complete yet.
I will release it here for tests when it is ok(and at least when I learn how to
compile a java project to a executable program, but I should need several
months).
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See again this picture.
https://www.pinterest.com/pin/451415562633095644/
with annotate:
https://www.britannica.com/science/growth-ring-plant-anatomy
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"And" <49341109@ntnu.edu.tw> wrote:
> "And" <49341109@ntnu.edu.tw> wrote:
> > I will post some pictures in the following days. Not very high grade，but
> > has reached a stage.
>
> The basic idea here..
All of these results are awesome !
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"Mr" <m******r******at_hotmail_dot_fr> wrote:
> "And" <49341109@ntnu.edu.tw> wrote:
> > "And" <49341109@ntnu.edu.tw> wrote:
> > > I will post some pictures in the following days. Not very high grade，but
> > > has reached a stage.
> >
> > The basic idea here..
>
> All of these results are awesome !
Thanks. I'm trying to generate small speckles.
It is an emphasis, too.
And I'm thinking how composite this to the base color. I use "average" in this
picture. But this method is fail to more requirements. Sometimes speckles should
darker than the base color. the method cannot control it well.
Post a reply to this message
Attachments:
Download 'show tree function test bumps t y15 - y60.png' (900 KB)
Preview of image 'show tree function test bumps t y15 - y60.png'
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"And" <49341109@ntnu.edu.tw> wrote:
> Thanks. I'm trying to generate small speckles.
>
> It is an emphasis, too.
>
> And I'm thinking how composite this to the base color. I use "average" in this
> picture. But this method is fail to more requirements. Sometimes speckles should
> darker than the base color. the method cannot control it well.
I think that this is going to be another advanced-granite texture odyssey.
You will probably need to use functions, and some way to introduce noise, in
order to randomize those color variations in the growth rings.
If you're going to tackle that, I'd probably start by making a list of common
features of real wood, and think about how to implement each of those, and where
they need to be in a hierarchy.
Different growth ring thicknesses. (one ring vs another)
Variable growth ring thickness (change in thickness along any given ring)
Asymmetric growth ring thickness. (a bent or curved branch will be thick on one
side and thin on the other)
Alternating light-dark / thick-thin growth rings
Darkening along a localized group of rings due to mold/fungus, etc.
Holes due to boring insects
"checking" (cracks) due to splitting when cut wood is rapidly dried
a more granular texture for the rings to represent the fibrous nature of the
wood.
SSLT
Diagrams or photos of wood would likely help you envision the types of functions
that would control each of those attributes, and suggest ways to combine them
into a final overall texture/material.
There are all of the different ways to cut wood to get different grain patterns
and expansion/contraction behaviour.
Then there's the fun of formulating pigment/texture maps for all of the
different species... ;)
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