 |
|
|
|
|
|
| |
| |
|
|
|
|
| |
| |
|
|
With a very similar setting, whole box, I redraw the shape. There is an artifact
line...,
Now I know it does not finish yet.
My personal purpose is output the UV-map for some mesh 3D model, I modeling them
in Blender now.
Post a reply to this message
Attachments:
Download 'show tree function.png' (1623 KB)
Preview of image 'show tree function.png'
|
|
| |
| |
|
|
|
|
| |
| |
|
|
hi,
"And" <49341109@ntnu.edu.tw> wrote:
> ...
> Now I know it does not finish yet.
do you always do "blocks", or have you put the texture to use yet? (thinking,
eg, the distribution 'woodbox.pov' scene, or such)
regards, jr.
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
First experiment to apply knot distortion to the base shape.
Very experimental trying. potentiality...?
Post a reply to this message
Attachments:
Download 'tree knot.png' (911 KB)
Preview of image 'tree knot.png'
|
|
| |
| |
|
|
|
|
| |
| |
|
|
"jr" <cre### [at] gmail com> wrote:
> hi,
>
> "And" <49341109@ntnu.edu.tw> wrote:
> > ...
> > Now I know it does not finish yet.
>
> do you always do "blocks", or have you put the texture to use yet? (thinking,
> eg, the distribution 'woodbox.pov' scene, or such)
>
>
> regards, jr.
"Now I know it does not finish yet." with this sentence I mean that I cannot
adjust the texture easily. The program outputs the texture result(only shape
distortion detail) --> color apply...to what I want, is semi-automatic.
I did not apply it to 3D models yet. But I know it certainly can apply.
I have tried mesh camera of POV-Ray.
This image is what I want to attach the material. I have made several models,
and I want to sell them on TurboSquid to rescue my poor situation: never
accomplish important things, no income for a long time, ...
I will share the program here in the form of freeware(Not open source), this is
because the program is the first usable one which I develop (To myself
mainly), and it highly dependent on POV-Ray, I know I do not on the step
developing commercial program yet, I need some feedback so.
Post a reply to this message
Attachments:
Download 'wardrope.png' (1837 KB)
Preview of image 'wardrope.png'
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Op 25/05/2022 om 17:32 schreef And:
> First experiment to apply knot distortion to the base shape.
>
> Very experimental trying. potentiality...?
Oh yes! This looks very knot-like, so to speak. You are on the right
track indeed.
--
Thomas
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Modify it with rather casual, I need 2-3 weeks to arrange the output .inc files.
The knot is an experimental feature.
In fact, I'm not clear on how these knot pattern form in photographs.
Post a reply to this message
Attachments:
Download 'show tree function.png' (1755 KB)
Preview of image 'show tree function.png'
|
|
| |
| |
|
|
|
|
| |
| |
|
|
"And" <49341109@ntnu.edu.tw> wrote:
> Modify it with rather casual, I need 2-3 weeks to arrange the output .inc files.
>
> The knot is an experimental feature.
> In fact, I'm not clear on how these knot pattern form in photographs.
This is entering crazy good level realm ! :-)
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Op 26/05/2022 om 13:42 schreef And:
> Modify it with rather casual, I need 2-3 weeks to arrange the output .inc files.
>
> The knot is an experimental feature.
> In fact, I'm not clear on how these knot pattern form in photographs.
>
Well, as knots are cross-sections of branches at different angles, you
can consider them identical to the main cross-section of the trunk wood.
Your attempt is very convincing, although - I suppose - your approach to
generate them is different.
--
Thomas
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
"Mr" <m******r******at_hotmail_dot_fr> wrote:
>
> This is entering crazy good level realm ! :-)
Thank you.
Thomas de Groot <tho### [at] degrootorg> wrote:
> Op 26/05/2022 om 13:42 schreef And:
> > Modify it with rather casual, I need 2-3 weeks to arrange the output .inc files.
> >
> > The knot is an experimental feature.
> > In fact, I'm not clear on how these knot pattern form in photographs.
> >
> Well, as knots are cross-sections of branches at different angles, you
> can consider them identical to the main cross-section of the trunk wood.
> Your attempt is very convincing, although - I suppose - your approach to
> generate them is different.
>
> --
> Thomas
Different approach...maybe. Totally the concept, it is about... I draw the
standard concentric circles(internal wood pattern) there, but I change the input
coordinate (x, y, z) to (x/factor(..), y/factor(..), z), than it distortion the
original space on x-y plane direction.
The knot is the same. I distortion the pattern shape in a narrow range, (vs r
theta and z)
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
"And" <49341109@ntnu.edu.tw> wrote:
> Different approach...maybe. Totally the concept, it is about... I draw the
> standard concentric circles(internal wood pattern) there, but I change the input
> coordinate (x, y, z) to (x/factor(..), y/factor(..), z), than it distortion the
> original space on x-y plane direction.
>
> The knot is the same. I distortion the pattern shape in a narrow range, (vs r
> theta and z)
#declare knot_theta_pos = 0.24*pi;
#declare knot_range = 0.41*pi; // 0.28*pi
#declare knot_h_pos = 1.36;
// simple temp r, not a formal one
#declare f_r_vs_t =
function(var_t, h) {
0.03* var_t
}
// r_of_it means the distant of p to the knot(stem) center line.
// but only approximate.
#declare f_knot_about =
function(var_t, r_of_it) {
select(
r_of_it - knot_range/2,
(f_r_vs_t(var_t, 0) +0.001*(cos(r_of_it*2*pi/knot_range) +
1)/2/pow(abs(r_of_it), 1.5) )/f_r_vs_t(var_t, 0),
1
)
}
#declare f_knot =
function(x, y, z) {
f_knot_about(time_mockup_function(x, y, z), sqrt(pow(f_theta(x,y) -
knot_theta_pos, 2) + pow((z - knot_h_pos)/f_r(x, y, z), 2)) )
}
// -----------------------------------------
#declare time_mockup_with_knot_function =
function (x, y ,z){
time_mockup_function(
x/f_knot(x, y, z),
y/f_knot(x, y, z),
z
)
}
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
|
|
