Reefing a Sail  1-20  21-33

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 From:  Brian (BWTR)
1916.1 
Anyone have any suggestions on how one might be able to create a sail that is reefed like that shown in the image please.

(Other reefed sail ideas also welcome please.)

Brian

EDITED: 31 Dec 2008 by BWTR

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 From:  Michael Gibson
1916.2 In reply to 1916.1 
Hi Brian, here is one idea using sweep.

To start with, I drew a path like this:



Then I drew a second curve that generally follows along that path, but kind of goes in bumps along it:



Here is a closeup so you can see more how this second curve is shaped:



That second curve should extend all the way past the ends of the original.

Now you can select the circle, run Construct / Sweep to build this tube:



Then while still inside of the Sweep command, click the "Pick scaling rail" button and pick the lumpy curve as the scaling rail. Also uncheck the option for "maintain height".

That will build a kind of lumpy tube like this:





Now use that as a base shape and take it into 3D coat and paint some kinds of small ripples and fold looking kind of textures on it.

Not sure if that helps you or not, but that might be a good way to try...

- Michael

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 From:  Brian (BWTR)
1916.3 In reply to 1916.2 
WOW!
Thanks Michael--that was quick.
In the meantime I had come up with this which I guess is along similar ideas.
I am quite amazed at how well MoI handled the complexity.
Still needs refinements so any more ideas are welcome still.

What fun!
Brian

EDITED: 31 Dec 2008 by BWTR

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 From:  Brian (BWTR)
1916.4 In reply to 1916.3 
Being a bit more precise and doing a rough Carrara render.

MoI amazes!
Brian

EDITED: 31 Dec 2008 by BWTR

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 From:  Paolo (PAOLOLOBBIA)
1916.5 In reply to 1916.3 
Hi Brian,

Here is my solution

EDITED: 24 Oct 2008 by PAOLOLOBBIA

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 From:  Brian (BWTR)
1916.6 In reply to 1916.5 
Thanks Paolo.
Here is a try with a more standard type sail reef.
Brian

EDITED: 31 Dec 2008 by BWTR

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 From:  Brian (BWTR)
1916.7 In reply to 1916.6 
And a roller reefing attempt.

Great learning for me, I hope also of interest/help to others.

Brian

EDITED: 31 Dec 2008 by BWTR

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 From:  Paolo (PAOLOLOBBIA)
1916.8 In reply to 1916.7 
Hi Brian,

Maybe those others are sleeping
right now,so be patient
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 From:  BurrMan
1916.9 In reply to 1916.8 
I'll chime in here with half baked input!

I think you would want to make the model in moi more like michaels, a formed solid, as doing the folding in Moi would not export out very well for texturing (I'm open to being wrong here!)

Then doing the folds with displacment in the render package.

From Moi



Using displacement to get the folding.




I could have spent more time here to get a better looking fold, and possibly added a helix in moi to use as rope to hide the pinched parts.
Also, I beleive brian is an accomplished carrara user and may be able to do this better.

I used the water-waves displacement.

Burr

EDITED: 19 Jun 2012 by BURRMAN

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 From:  BurrMan
1916.10 In reply to 1916.9 
So the point is it's not "actually" an all folded over model, just appears that way in the render. Then you could add another small peice like Paolo's example hanging out of the bottom to add that seperation effect
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 From:  Brian (BWTR)
1916.11 In reply to 1916.10 
Burr
Thanks, but I don't really think your example or Michaels, fully tie in with the actuality of real reefed sails. I fiddled around a bit yesterday also with the displacement painting idea and it is a bit hair raising---not ideal I suggest.

It really is difficult to get them as the real thing. Also, when doing the exercises, there are shapes one is limited to before MoI makes crazy decissions. My examples were each after many experiments.

Any further ideas very welcome though.

I intend to work on the first one, like the photo, a bit more today. If you note the final example last night of the roller reef exercise you will see I was getting a bit of character into the sail.

Brian
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 From:  Brian (BWTR)
1916.12 In reply to 1916.11 
Maybe this is getting close?
Still needs more thought--later today!
Brian

EDITED: 31 Dec 2008 by BWTR

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 From:  Brian (BWTR)
1916.13 In reply to 1916.12 
I don't seem to be able to create an effective "Scaling Rail" that will give the pinched in effect I need in this other dimension.
Welcome help.
Brian

EDITED: 31 Dec 2008 by BWTR

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 From:  Michael Gibson
1916.14 In reply to 1916.13 
Hi Brian - try turning off the checkbox for "Maintain Height".

That's an option when using the scaling rail, and if it is enabled the sweep will stretch only in one direction to match the scaling rail.

If you uncheck it, the sweep will scale in all directions to match the scaling rail which should then do what you want.

- Michael
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 From:  Brian (BWTR)
1916.15 In reply to 1916.14 
Thanks Michael.
I thought I had clicked on/off everything I could thinks of!

Anyway, think I am expecting a lot to need to better this.

Thanks, Brian

EDITED: 31 Dec 2008 by BWTR

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 From:  BurrMan
1916.16 In reply to 1916.15 
I suppose you had a vision of what you want. I was going off of the picture posted.

EDITED: 19 Jun 2012 by BURRMAN

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 From:  Brian (BWTR)
1916.17 In reply to 1916.16 
I thought I was also!

Maybe having owned a sailing yacht, and been involved with sailing for many decades, I have a different vision?

Great learning of MoI for me.
Thanks for being involved.

Brian

ps This was the sail shape I had in mind.

EDITED: 31 Dec 2008 by BWTR

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 From:  BurrMan
1916.18 In reply to 1916.17 
I live in Hawaii. Your picture looks like the "Falls of Clyde" A famous sailing boat that is docked here as a museum. Same type of boat.

Have you seen gilligans Island too?

Good luck,
Burr

EDITED: 28 Aug 2008 by BURRMAN

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 From:  Brian (BWTR)
1916.19 In reply to 1916.18 
Burr
No. Now you have given me MORE things to research!

Here is a version done in Modo with polys.
The author is not very happy with the result and is thinking of reinstalling Amapi or--maybe--being a customer fro MoI!
Brian

ps. Do you know the history of the boat in the original photo and where it is?---Try Maine I think?

EDITED: 31 Dec 2008 by BWTR

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 From:  Julia (JGIBSON)
1916.20 In reply to 1916.19 
Ha! As a Mainer I have to say, surely not Maine with a palm tree in the back! We wish! There are a lot of schooners in Camden, Maine, where I'm from, though.
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