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From: Mike Williams
Subject: Rope macro - Work in progress
Date: 28 Feb 2005 06:53:17
Message: <4223062d@news.povray.org>
I'm currently working on a rope macro that will generate a rope along a
spline.

The output is a mesh2 with a uv_map.

I'll make the macro available when it's finished.


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Attachments:
Download 'Rope.jpg' (28 KB)

Preview of image 'Rope.jpg'
Rope.jpg


 

From: Marc Jacquier
Subject: Re: Rope macro - Work in progress
Date: 28 Feb 2005 08:09:19
Message: <422317ff@news.povray.org>
Great!!
I buy it!

Marc

news:4223062d@news.povray.org...
> I'm currently working on a rope macro that will generate a rope along a
> spline.
>
> The output is a mesh2 with a uv_map.
>
> I'll make the macro available when it's finished.
>
>
>


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From: Mike Williams
Subject: Re: Rope macro - Work in progress
Date: 28 Feb 2005 08:44:00
Message: <+mbMmDAx$xICFwH$@econym.demon.co.uk>
The source code is now available at 
http://www.econym.demon.co.uk/pov/rope.htm

-- 
Mike Williams
Gentleman of Leisure


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From: dlm
Subject: Re: Rope macro - Work in progress
Date: 28 Feb 2005 12:22:35
Message: <4223535b@news.povray.org>
Mike,
Best I've seen so far.
Rope technicalities - attention to detail.
A cabled rope is typically a 3-start helical bundle. And typically 
right-handed.
A nice example is at
http://www.bestdock.com/pics/extras/Rope.JPG
Your rope looks like it has about 6 strands and is left-handed.
Also in the first bend (from the left) it appears to be unravelling (strands 
are more parallel with main axis).
Keep up the good work.
DLM


"Mike Williams" <nos### [at] econymdemoncouk> wrote in message 
news:4223062d@news.povray.org...
> I'm currently working on a rope macro that will generate a rope along a
> spline.
>
> The output is a mesh2 with a uv_map.
>
> I'll make the macro available when it's finished.
>
>
>


Post a reply to this message

From: Mike Williams
Subject: Re: Rope macro - Work in progress
Date: 28 Feb 2005 12:38:09
Message: <biJFHHA5b1ICFwDs@econym.demon.co.uk>
Wasn't it dlm who wrote:
>Mike,
>Best I've seen so far.
>Rope technicalities - attention to detail.
>A cabled rope is typically a 3-start helical bundle. And typically 
>right-handed.
>A nice example is at
>http://www.bestdock.com/pics/extras/Rope.JPG
>Your rope looks like it has about 6 strands and is left-handed.
>Also in the first bend (from the left) it appears to be unravelling (strands 
>are more parallel with main axis).
>Keep up the good work.

This particular example has five strands, but the macro allows any
number not less than three.

The macro supports left handed rope by setting a negative value to the
Twistiness parameter.

I don't think it actually unravels, it's just an illusion caused by the
perspective.

-- 
Mike Williams
Gentleman of Leisure


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From: kurtz le pirate
Subject: Re: Rope macro - Work in progress
Date: 28 Feb 2005 13:29:34
Message: <kurtzlepirate-D1CEBE.19293428022005@news.povray.org>
In article <4223062d@news.povray.org>,
 "Mike Williams" <nos### [at] econymdemoncouk> wrote:

>>I'm currently working on a rope macro that will generate a rope along a
>>spline.
>>
>>The output is a mesh2 with a uv_map.
>>
>>I'll make the macro available when it's finished.
>>
>>
>>begin 666 Rope.jpg
>>[Image]
>>
>>end

very nice!

did my cables inspire you ? ;-)

good job, as usual.


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From: Dave Matthews
Subject: Re: Rope macro - Work in progress
Date: 28 Feb 2005 13:40:00
Message: <web.4223653064b7b8e68c7259570@news.povray.org>
As always, great, Mike, and thanks.  I learn more from your tutorials, and
examining your examples and macros, than about any other way.

Dave Matthews


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From: Rick Measham
Subject: Re: Rope macro - Work in progress
Date: 28 Feb 2005 18:02:03
Message: <4223a2eb$1@news.povray.org>
Mike Williams wrote:
> This particular example has five strands, but the macro allows any
> number not less than three.
> 
> The macro supports left handed rope by setting a negative value to the
> Twistiness parameter.

I'd love to see an example of a three-strand rope with a left hand twist 
to it .. there was something about this one that just didn't feel quite 
right.


Then:
... your next mission, should you choose to accept it, is to create a 
macro for a stranded 3-strand rope. Not sure of the specs, but each 
strand in hemp ropes tends to be a twist of smaller strands ...

Cheers!
Rick


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From: Thomas de Groot
Subject: Re: Rope macro - Work in progress
Date: 1 Mar 2005 03:19:44
Message: <422425a0@news.povray.org>
"Dave Matthews" <dma### [at] wrmnwestmnscuedu> schreef in bericht
news:web.4223653064b7b8e68c7259570@news.povray.org...
>
> As always, great, Mike, and thanks.  I learn more from your tutorials, and
> examining your examples and macros, than about any other way.
>
> Dave Matthews
>

Exactly! Would have said the same! Great work Mike!

Thomas


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From: regdo
Subject: Re: Rope macro - Work in progress
Date: 1 Mar 2005 14:26:36
Message: <4224c1ec@news.povray.org>
Rick Measham wrote:
> Mike Williams wrote:
> 
>> This particular example has five strands, but the macro allows any
>> number not less than three.
>>
>> The macro supports left handed rope by setting a negative value to the
>> Twistiness parameter.
> 
> 
> I'd love to see an example of a three-strand rope with a left hand twist 
> to it .. there was something about this one that just didn't feel quite 
> right.
> 
> 
> Then:
> .... your next mission, should you choose to accept it, is to create a 
> macro for a stranded 3-strand rope. Not sure of the specs, but each 
> strand in hemp ropes tends to be a twist of smaller strands ...
> 
> Cheers!
> Rick
Why not directly implement a fractal rope, each smaller strand being a 
twist of smaller strands being ... ? ;-)
Regis


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