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From: cubicon
Subject: Re: POV-Tree 1.5
Date: 6 May 2004 10:10:01
Message: <web.409a4646dd441b42492024a10@news.povray.org>
I downloaded the program, but I haven't had time to check it out yet.
I have used an earlier version, they were great! Thanks a lot!
The mesh editor was really useful.
It always amazes me how important arrangement of objects are, even if
something is technically very well modelled, it will still look
strange/unnatural if the objects are not arranged in the right manner.


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From: espri128
Subject: Re: POV-Tree 1.5
Date: 6 May 2004 16:30:35
Message: <409AA117.6040501@web.de>
Hi Gena,

it's a great tool - like every time.  But i have a little question to 
the community : how can i create flowers with POV-Tree ?

... I can here the answer: you need another tool ! ...


thx
	espri128

Gena schrieb:
> Final version of POV-Tree 1.5 is available here:
> 
> http://home.covad.net/~gobukhov/povtree.html
> 
> You can also find there screenshots:
> 
> http://home.covad.net/~gobukhov/screenshots.html
> 
> and small tutorial 'Making Leaves':
> 
> http://home.covad.net/~gobukhov/tutorial.html
> 
> Please let me know if you will find out any
> problem.
> 
> Gena.
>


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From: Gena
Subject: Re: POV-Tree 1.5
Date: 6 May 2004 23:49:44
Message: <409b0758$1@news.povray.org>
> it's a great tool - like every time.  

Thank you!

But i have a little question to
> the community : how can i create flowers with POV-Tree ?
> 
> ... I can here the answer: you need another tool ! ...

You are reading my mind :) Just today I was thinking how
to improve Blossom support in POV-Tree. Right now the choice
is limited by the predefined set of blossom types. As with
leaves the most natural looking blossoms are height_field
ones. You can find out the declaration of such blossom/flower
in TOMLEAF.inc file from TOMTREE package. Also you can check
out my tutorial about making height field leaves:

http://home.covad.net/~gobukhov/tutorial.html

it's also valid for height field flowers.

Mesh blossom is not so realistic in closup scenes.

I'm planning to improve Blossom support in the future.
It will use the same approach as UV mapped leaves (see
the same tutorial). The flower will be just composed
from several UV mapped leaves/petals. Also such values
as number of petals, angle etc. will be adjustable.

When it will be implemented you will be able to save
such flower as include file and then just reuse the
mesh flower declared in that file in your scene as you
can do right now with UV mapped leaves.

Gena.


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From: Gena
Subject: Re: POV-Tree 1.5
Date: 6 May 2004 23:57:04
Message: <409b0910$1@news.povray.org>
> I downloaded the program, but I haven't had time to check it out yet.
> I have used an earlier version, they were great! Thanks a lot!

Thank you! New version differs from the previous one very much.
Hopefully it became more convinient :)

The idea with short term POV-Ray competitions conducted by
Paul Bourke forced me to think about POV-Tree competition.
I mean competition for the best image prepared with POV-Tree
and rendered in POV-Ray. I think I could even provide a prize
for the first place winner... something like wireless
keyborad/mouse :)

Gena.


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From: stephen parkinson
Subject: Re: POV-Tree 1.5
Date: 9 May 2004 10:45:23
Message: <409e4403$1@news.povray.org>
Gena wrote:
> Final version of POV-Tree 1.5 is available here:
> 
> http://home.covad.net/~gobukhov/povtree.html
> 
> You can also find there screenshots:
> 
> http://home.covad.net/~gobukhov/screenshots.html
> 
> and small tutorial 'Making Leaves':
> 
> http://home.covad.net/~gobukhov/tutorial.html
> 
> Please let me know if you will find out any
> problem.
> 
> Gena.
> 

any ideas how to do a tree that have grown to have branches budding from 
where its been lopped/trimmed

say trunk 12", main branches 6" and some stuff has been lopped
back to say 3"
after a few years it springs 2" or 3" branches from just below the chop
point

cherry tree seem to be a favourite target for some reason

stephen


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From: Patrick Elliott
Subject: Re: POV-Tree 1.5
Date: 9 May 2004 16:01:11
Message: <MPG.1b083bd4e4725fba989a33@news.povray.org>
In article <409e4403$1@news.povray.org>, ste### [at] zmemw16demoncouk 
says...
> Gena wrote:
> > Final version of POV-Tree 1.5 is available here:
> > 
> > http://home.covad.net/~gobukhov/povtree.html
> > 
> > You can also find there screenshots:
> > 
> > http://home.covad.net/~gobukhov/screenshots.html
> > 
> > and small tutorial 'Making Leaves':
> > 
> > http://home.covad.net/~gobukhov/tutorial.html
> > 
> > Please let me know if you will find out any
> > problem.
> > 
> > Gena.
> > 
> 
> any ideas how to do a tree that have grown to have branches budding from 
> where its been lopped/trimmed
> 
> say trunk 12", main branches 6" and some stuff has been lopped
> back to say 3"
> after a few years it springs 2" or 3" branches from just below the chop
> point
> 
> cherry tree seem to be a favourite target for some reason
> 
> stephen
> 
Hmm.. Good question. For a scene requiring a close up view, such cut or 
even naturally broken off places would add greatly to the realism. You 
don't generally see many trees, even in the wild, that don't have such 
things.

-- 
void main () {

    call functional_code()
  else
    call crash_windows();
}


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From: Alain
Subject: Re: POV-Tree 1.5
Date: 9 May 2004 17:13:42
Message: <409e9f06$1@news.povray.org>
Patrick Elliott nous apporta ses lumieres ainsi en ce 2004/05/09 16:00... :

>In article <409e4403$1@news.povray.org>, ste### [at] zmemw16demoncouk 
>says...
>  
>
>>Gena wrote:
>>    
>>
>>>Final version of POV-Tree 1.5 is available here:
>>>
>>>http://home.covad.net/~gobukhov/povtree.html
>>>
>>>You can also find there screenshots:
>>>
>>>http://home.covad.net/~gobukhov/screenshots.html
>>>
>>>and small tutorial 'Making Leaves':
>>>
>>>http://home.covad.net/~gobukhov/tutorial.html
>>>
>>>Please let me know if you will find out any
>>>problem.
>>>
>>>Gena.
>>>
>>>      
>>>
>>any ideas how to do a tree that have grown to have branches budding from 
>>where its been lopped/trimmed
>>
>>say trunk 12", main branches 6" and some stuff has been lopped
>>back to say 3"
>>after a few years it springs 2" or 3" branches from just below the chop
>>point
>>
>>cherry tree seem to be a favourite target for some reason
>>
>>stephen
>>
>>    
>>
>Hmm.. Good question. For a scene requiring a close up view, such cut or 
>even naturally broken off places would add greatly to the realism. You 
>don't generally see many trees, even in the wild, that don't have such 
>things.
>
>  
>
You need to set a point where a branche get stoped, go back a little, 
then start generating new branches skiping 1 or 2 nodes. Chop the 
interupted branche with an angle to simulate a broken one.

Alain


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From: Gena
Subject: Re: POV-Tree 1.5
Date: 10 May 2004 01:22:33
Message: <409f1199@news.povray.org>
You can simulate this by playing with twig parameters
on 'Additional' tab (Angle, Alignment...).
The last twig on the branch will start right at
the end of the branch with angle which you define.
If you need 2" or 3" inches below the chop point
you have to move that last twig manually in
'Edit Mesh' mode.

There are so many different features in the nature
that I'm afraid it's almost impossible to simulate
all of them automatically :( Among others:

- many trees have some dry branches which usually
   have different color and don't have leaves. You can
   simulate it combining parts without leaves with
   parts which have foliage.

- multi-trunk trees. Such trees are not supported
   in POV-Tree. You can only simulate it either
   defining branches as trunks or combining several
   trees.

- roots usually have the same "tree" structure. In
   POV-Tree roots have only first order elements.
   If you need tree-like roots you have to make a
   separate tree model for the root and then rotate
   it around Z or X axis.

Here is another stuff not supported in POV-Tree but
which can probably will have direct support in the
future:

- fruits/berries (right now you can simulate it through
   custom mesh blossom)
- birds' nests
- geometrically lopped trees - cones, cylinders etc.
   (this feature is available in some commercial
   packages)

Gena.



stephen parkinson wrote:
> Gena wrote:
> 
>> Final version of POV-Tree 1.5 is available here:
>>
>> http://home.covad.net/~gobukhov/povtree.html
>>
>> You can also find there screenshots:
>>
>> http://home.covad.net/~gobukhov/screenshots.html
>>
>> and small tutorial 'Making Leaves':
>>
>> http://home.covad.net/~gobukhov/tutorial.html
>>
>> Please let me know if you will find out any
>> problem.
>>
>> Gena.
>>
> 
> any ideas how to do a tree that have grown to have branches budding from 
> where its been lopped/trimmed
> 
> say trunk 12", main branches 6" and some stuff has been lopped
> back to say 3"
> after a few years it springs 2" or 3" branches from just below the chop
> point
> 
> cherry tree seem to be a favourite target for some reason
> 
> stephen


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From: cubicon
Subject: Re: POV-Tree 1.5
Date: 10 May 2004 18:35:01
Message: <web.40a002aedd441b42a7b9d5440@news.povray.org>
I think that technically, the program is very good.
The reason the images doesn't look 100% realistic,
or perhaps I should say naturalistic is, apart from
what has already been mentioned, the fact that the
growth of real trees are controlled by nature.
Ie where it stands (winds & soil) and the access to
light and water.

The most important factor would be light and water.
The water controls how much the branches grow, and
light controls how they grow.
So what is missing is the "distortion" of the algoritm
that occurs when the branches turns to take advantage
of the light.
Thus the scrambling isn't random, but depend on other
branches, direction of light etc.
That is why the mesh editor is so important, because
it enables you to remove the branches that "looks"
wrong.
Perhaps this problem could be solved by a growth
simulation, coupled with an attractor (representing
the light).
I'm not trying to criticize the program or anything,
it just thought it would be an interesting topic.


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From: Thomas de Groot
Subject: Re: POV-Tree 1.5
Date: 11 May 2004 02:55:37
Message: <40a078e9@news.povray.org>
"stephen parkinson" <ste### [at] zmemw16demoncouk> schreef in bericht
news:409e4403$1@news.povray.org...

> any ideas how to do a tree that have grown to have branches budding from
> where its been lopped/trimmed
>
> say trunk 12", main branches 6" and some stuff has been lopped
> back to say 3"
> after a few years it springs 2" or 3" branches from just below the chop
> point
>
> cherry tree seem to be a favourite target for some reason
>

I did this with splinetree.inc by Andrew Clinton. However, that is no answer
to doing it with POV-Tree, of course.

Thomas


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