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31 Oct 2024 19:35:22 EDT (-0400)
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From: Stephen
Subject: Re: Wind pattern code and reed stalk example
Date: 22 Sep 2014 13:35:20
Message: <54205dd8$1@news.povray.org>
On 22/09/2014 18:07, LanuHum wrote:
> Thomas,thanks.
> I started understanding your mechanism.
> But, I had an idea to use means of Blender (force field : wind) to do without
> excess mathematical calculations.
> Wind is applied to particles, but there is no realistic bend
> It is necessary to find only the solution of a realistic bend of a trunk of a
> plant also means of Blender

Just a suggestion LanuHum,
Can Blender apply wind to cloth?
Can you create a stalk as a "cloth" with only 2 degrees of freedom and 
very stiff?
If so then you can apply "wind" to the "clothified"* stalk.

*Using Poser terminology.


-- 

Regards
     Stephen


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From: LanuHum
Subject: Re: Wind pattern code and reed stalk example
Date: 22 Sep 2014 15:15:00
Message: <web.5420749d825f35c27a3e03fe0@news.povray.org>
Stephen <mca### [at] aolcom> wrote:
>
> Just a suggestion LanuHum,
> Can Blender apply wind to cloth?

Yes.

> Can you create a stalk as a "cloth" with only 2 degrees of freedom and
> very stiff?
> If so then you can apply "wind" to the "clothified"* stalk.

I don't think that such option will be real for a large number of triangles. The
scene will be very heavy.
I am inclined to use only data, to process and write down the file


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From: Stephen
Subject: Re: Wind pattern code and reed stalk example
Date: 22 Sep 2014 15:40:49
Message: <54207b41@news.povray.org>
On 22/09/2014 20:13, LanuHum wrote:
> Stephen <mca### [at] aolcom> wrote:
>>
>> Just a suggestion LanuHum,
>> Can Blender apply wind to cloth?
>
> Yes.
>
>> Can you create a stalk as a "cloth" with only 2 degrees of freedom and
>> very stiff?
>> If so then you can apply "wind" to the "clothified"* stalk.
>
> I don't think that such option will be real for a large number of triangles. The
> scene will be very heavy.
> I am inclined to use only data, to process and write down the file
>
>

Fair enough. It was just a thought.
Keep up the good work. :-)

-- 

Regards
     Stephen


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From: Thomas de Groot
Subject: Re: Wind pattern code and reed stalk example
Date: 23 Sep 2014 03:17:08
Message: <54211e74@news.povray.org>
On 22-9-2014 19:07, LanuHum wrote:
> Thomas,thanks.
> I started understanding your mechanism.
> But, I had an idea to use means of Blender (force field : wind) to do without
> excess mathematical calculations.
> Wind is applied to particles, but there is no realistic bend
> It is necessary to find only the solution of a realistic bend of a trunk of a
> plant also means of Blender
>

Ah yes, that is an idea. Like Stephen suggested, something Poser also 
does. Only thing indeed is the bending.

It seems to me, looking at your image, that the rate of bending should 
be inverted. What I mean is this: Now, the angle goes from high at the 
start to gradually low towards the top, producing a concave-up bending 
shape. Could you /invert/ the calculation for this? Thus making a 
convex-up bending shape?

Alternatively, can you make the wind power in Blender to increase upwards?

Thomas


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From: LanuHum
Subject: Re: Wind pattern code and reed stalk example
Date: 23 Sep 2014 12:45:01
Message: <web.5421a2c0825f35c27a3e03fe0@news.povray.org>
Thomas de Groot <tho### [at] degrootorg> wrote:
>
> Ah yes, that is an idea. Like Stephen suggested, something Poser also
> does. Only thing indeed is the bending.
>
> It seems to me, looking at your image, that the rate of bending should
> be inverted. What I mean is this: Now, the angle goes from high at the
> start to gradually low towards the top, producing a concave-up bending
> shape. Could you /invert/ the calculation for this? Thus making a
> convex-up bending shape?
>
> Alternatively, can you make the wind power in Blender to increase upwards?
>
> Thomas

If to use sphere_sweep probably it is possible to reach desirable result of a
bend.
It is necessary to study influence of several wind modifiers for increase in
wind power from above.
If the result is effective then it is necessary to think of leaves. :)


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Attachments:
Download 'force_field_wind_render.jpg' (95 KB)

Preview of image 'force_field_wind_render.jpg'
force_field_wind_render.jpg


 

From: LanuHum
Subject: Re: Wind pattern code and reed stalk example
Date: 23 Sep 2014 13:35:00
Message: <web.5421af2b825f35c27a3e03fe0@news.povray.org>
Now there are a lot of modifiers


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Attachments:
Download 'wind.blend.jpg' (375 KB)

Preview of image 'wind.blend.jpg'
wind.blend.jpg


 

From: Thomas de Groot
Subject: Re: Wind pattern code and reed stalk example
Date: 24 Sep 2014 03:59:42
Message: <542279ee$1@news.povray.org>
On 23-9-2014 19:34, LanuHum wrote:
> Now there are a lot of modifiers
>

This is looking very good! Exactly how I think it should be.

Thomas


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From: LanuHum
Subject: Re: Wind pattern code and reed stalk example
Date: 24 Sep 2014 12:20:00
Message: <web.5422ee73825f35c27a3e03fe0@news.povray.org>
Thomas de Groot <tho### [at] degrootorg> wrote:
>
> This is looking very good! Exactly how I think it should be.
>
> Thomas

I develop leaves :)


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Attachments:
Download 'wind_with_leaves.jpg' (104 KB)

Preview of image 'wind_with_leaves.jpg'
wind_with_leaves.jpg


 

From: Stephen
Subject: Re: Wind pattern code and reed stalk example
Date: 24 Sep 2014 13:19:47
Message: <5422fd33$1@news.povray.org>
On 24/09/2014 17:16, LanuHum wrote:
> Thomas de Groot <tho### [at] degrootorg> wrote:
>>
>> This is looking very good! Exactly how I think it should be.
>>
>> Thomas
>
> I develop leaves :)
>

You do it well. Bravo!

-- 

Regards
     Stephen


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From: LanuHum
Subject: Re: Wind pattern code and reed stalk example
Date: 24 Sep 2014 15:10:01
Message: <web.542316ad825f35c27a3e03fe0@news.povray.org>
Stephen <mca### [at] aolcom> wrote:
> >
> > I develop leaves :)
> >
>
> You do it well. Bravo!
>
> --
>
> Regards
>      Stephen

It only scheme (plan).
In high resolution it won't look good.
Besides, I used manual editing. For animation automatic process is necessary.


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