I tried to generate some wood pattern last year. But for the purpose of control
the curve, I typed very much code and number(not only the picture shows).

So I decided to write a (java) program. Using mouse to control some basic curve
of the annual rings. Than output a few .pov file to draw the picture(pattern).
But still not finish. Take the advantage of write an appropriate size program I
can practice my coding skill, too.

Because it is prototype, I will release it and take this to make a change...
Maybe will be early next year.

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I wrote a curve editor first(video), but need to improve and extend. I feel it
is very challenge to me to develop a good and complete component program.

It's the current situation...

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Because this is such a (suitable size) program that I can develop by myself(one
person)

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"And" <49341109@ntnu.edu.tw> wrote:
> Because this is such a (suitable size) program that I can develop by myself(one
> person)

Hey - this is looking quite promising already.  :)

Are you using Bezier splines?  What are you going to be using the curve for?
Controlling the color_map of the wood pigment pattern? The geometry of the wood?
 Both?

Maybe you can look at Ed Hynan's EPspline lathe/sor editor program for some
inspiration.

It's really nice that you're writing it in Java - will we be able to try this
out by running the applet in a web browser?


My wood pigment patterns have always been fairly simplistic, and I'm sure I can
learn a lot of things that I should have been doing for a long time now, just by
seeing the progress of your development renders and relevant scene code.


- Bill

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"Bald Eagle" <cre### [at] netscapenet> wrote:
>
> Hey - this is looking quite promising already.  :)
>

Oh thanks.

> Are you using Bezier splines?  What are you going to be using the curve for?
> Controlling the color_map of the wood pigment pattern? The geometry of the wood?
>  Both?

I choose a beautiful picture, so not very clear what it is.
I upload another picture.
I implement it with Bezier spline, but don't allow user to edit the tangent
handle point, instead it generate the tangent handle points automatically, for
maintain every part of the curve is smooth.

Control the shape of annual ring. instead of perfect circle. Like ... this photo
on gallery:
https://www.istockphoto.com/photo/wood-texture-gm175444922-20420677

I start the wood pattern with perfect concentric circles and constant grow
rate(interval of two ring), but it is too inflexible, I want some variety, so I
rewrite it with segmented curve. I don't have too much idea for the color_map
now.

>
> Maybe you can look at Ed Hynan's EPspline lathe/sor editor program for some
> inspiration.
>
> It's really nice that you're writing it in Java - will we be able to try this
> out by running the applet in a web browser?

I never thought that, maybe it can transfer to applet after finish, but I focus
on the program itself currently.

>
>
> My wood pigment patterns have always been fairly simplistic, and I'm sure I can
> learn a lot of things that I should have been doing for a long time now, just by
> seeing the progress of your development renders and relevant scene code.
>
>
> - Bill

Ha ha... that sky render is too big and need too much experiment to improve, I
cannot develop it in this stage. It is far from an one person work.

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Il 01/11/2021 07:38, And ha scritto:
 > "Bald Eagle" <cre### [at] netscapenet> wrote:
 >>
 >> Hey - this is looking quite promising already.  :)
 >>

Very promising, indeed. It will be a useful tool.

Paolo

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Paolo Gibellini <p.g### [at] gmailcom> wrote:
> Il 01/11/2021 07:38, And ha scritto:
>  > "Bald Eagle" <cre### [at] netscapenet> wrote:
>  >>
>  >> Hey - this is looking quite promising already.  :)
>  >>
>
> Very promising, indeed. It will be a useful tool.
>
> Paolo

Thank you.

I also need to work hard.

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On 11/1/2021 2:38 AM, And wrote:
> "Bald Eagle" <cre### [at] netscapenet> wrote:
>>
>> Hey - this is looking quite promising already.  :)
>>
> 
> Oh thanks.

How is it with animations? The thing I hate about the built-in wood 
textures is that they distort wildly when I change the angle of camera 
to wood.

dik

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Dick Balaska <dic### [at] buckosoftcom> wrote:
> On 11/1/2021 2:38 AM, And wrote:
> > "Bald Eagle" <cre### [at] netscapenet> wrote:
> >>
> >> Hey - this is looking quite promising already.  :)
> >>
> >
> > Oh thanks.
>
> How is it with animations? The thing I hate about the built-in wood
> textures is that they distort wildly when I change the angle of camera
> to wood.
>
> dik

Can you upload a short animation video? I never encounter this situation when I
use the built-in wood texture.

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Slow-pace develop but arrive a step.

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Attachments:
Download 'rect coor video.mp4.dat' (535 KB)