[Plugin] SketchyFFD (Updated 20130203)

Re: SketchyFFD (Free Form Deformation)

Postby xrok1 » Wed Feb 20, 2008 3:22 am

i look forward to it.
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Re: SketchyFFD (Free Form Deformation)

Postby Fletch » Mon Feb 25, 2008 6:23 pm

@Xrok... looky here. ;)
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Re: SketchyFFD (Free Form Deformation)

Postby putnik » Tue Feb 26, 2008 1:22 am

Chris thank you for sharing this script! It doesn't seem to work for me though. It creates a group consisting of just one construction point no matter what I'm trying to manipulate (a cube or a donut), and no matter what option i choose 2x2 or higher. I'm on winXP SketchUp 5.

What am I doing wrong? (using script version from 12 feb, 2008)
TIA
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Re: SketchyFFD (Free Form Deformation)

Postby CPhillips » Tue Feb 26, 2008 4:16 am

Ok. Ill have a new version soon and Ill post it there.

Chris.

Jim wrote:Chris,

Would you start a thread in the Script Depository which contains just the downloads? That way, everyone can find it easily, and you can edit the page when you have an update.

Thanks.
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Re: SketchyFFD (Free Form Deformation)

Postby CPhillips » Tue Feb 26, 2008 4:17 am

putnik wrote:Chris thank you for sharing this script! It doesn't seem to work for me though. It creates a group consisting of just one construction point no matter what I'm trying to manipulate (a cube or a donut), and no matter what option i choose 2x2 or higher. I'm on winXP SketchUp 5.

What am I doing wrong? (using script version from 12 feb, 2008)
TIA

Hmm. I dont know. Did you group the object? Open the ruby console and try it again to see if it prints any errors. Or post a model that fails and I'll take a look.

Chris
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Re: SketchyFFD (Free Form Deformation)

Postby CPhillips » Tue Feb 26, 2008 6:00 am

Has anyone actually used this script for anything useful yet?

The reason I ask is I have tried using it for few things and the results have been disappointing. Its ok for distorting shapes comically and making simple terrains. But I tried to make a simple boat hull, something I figured it would be good for, and it was just tedious.

Part of the problem is with more complex deformations (beyond (2x2)) its too difficult to foresee how moving the control points is going to deform the model. It certainly isn't predictable and it makes it difficult to match any but the simplest shape or design.

AND I am thinking that for the simpler (2x2 and 3x3) cases a more specific deformation script would be better. Something that could be done with real-time preview. Simpler deforms include shear, taper, bend, twist, squeeze, and inflate.

Chris
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Re: SketchyFFD (Free Form Deformation)

Postby remus » Tue Feb 26, 2008 8:20 am

I made that pear, but thats about it so far, i imagine its going to be most useful for more organic shapes where precision isnt entirely necessary.
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Re: SketchyFFD (Free Form Deformation)

Postby boofredlay » Tue Feb 26, 2008 3:08 pm

Chris, I used it on these guys and I they have been downloaded a good many times; so thank you. :thumb:
http://www.formfonts.com/viewModel.php? ... e=&active=
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Re: SketchyFFD (Free Form Deformation)

Postby GreenToaster » Sat Mar 01, 2008 6:08 pm

WOW!!!

:ecstatic:

MEGA-THANKS!!!
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Re: SketchyFFD (Free Form Deformation)

Postby kwistenbiebel » Sun Mar 02, 2008 9:53 pm

CPhillips wrote:Has anyone actually used this script for anything useful yet?


yes sir,
I am experimenting, trying to deform a wine glass....
The knot itself and the feet and bowl of a straight wine glass are not 'FF' but imports I stitched together.
The deformations ('bending' like operations) to get the glass posed, and also the liquid, are done using FF ( = I rotate some points)
My conclusion is that the current FF is a rough but decent start for organic shaping.

Chris, I think you can indeed only discover what actually needs to be improved by experimenting and trying to model something concrete. In that way, it is more easy to figure out what works and what is needed.

I discovered that the whole object needs to be selected as a FF group. If you only perform FF on a part of the object (for instance the neck of a glass) it will break contact with the rest of the object (loose faces, holes etc...).
Being able to just select what you need transformed does seem the way to go however as the FF operation takes less long (less geometry to FF) and the rest of the object stays untouched.


Here's that experiment I am doing (the resulting mesh is dirty though):
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Re: SketchyFFD (Free Form Deformation)

Postby GreenToaster » Sat Mar 08, 2008 8:01 pm

. . . the shape (the nose of a car) popped into my head - few minutes later this was modeled using SketchUp w/the SketchyFFD script . . . I really, really love that script!!! :ecstatic:

THANKS!!!
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Re: SketchyFFD (Free Form Deformation)

Postby CPhillips » Tue Mar 11, 2008 4:15 am

GreenToaster wrote:. . . the shape (the nose of a car) popped into my head - few minutes later this was modeled using SketchUp w/the SketchyFFD script . . . I really, really love that script!!! :ecstatic:

THANKS!!!

Thats cool.

I'll have a small update soon. I added a tool to draw an NxN grid with a control point at each grid intersection.
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Re: SketchyFFD (Free Form Deformation)

Postby otb designworks » Tue Mar 11, 2008 3:02 pm

I haven't been paying attention to this thread, as I haven't needed a freeform, control point manipulator yet.

However, I find myself needing to model a very complex tapered helical seashell form. This script is absolutely amazing!!! I don't know how I would have a pulled this off any other way, short of using another piece of software.

THANK YOU!!!! THANK YOU!!!! What an awesome piece of scripting.

now, if only Sketchy Physics worked on the mac, too..........
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Re: SketchyFFD (Free Form Deformation)

Postby majid » Thu Mar 13, 2008 10:38 pm

i was modeling a harp and had some problem during modeling . does your ruby can help me ? or is there any ruby/solution for this kind of forms ( a tight one)?
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Re: SketchyFFD (Free Form Deformation)

Postby CPhillips » Fri Mar 14, 2008 6:02 am

majid wrote:i was modeling a harp and had some problem during modeling . does your ruby can help me ? or is there any ruby/solution for this kind of forms ( a tight one)?


I dont know if FFD can do that or not. Whats wrong with it? It looks pretty good to me.
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Re: SketchyFFD (Free Form Deformation)

Postby majid » Fri Mar 14, 2008 11:13 am

i did it usin pull/push + line tool + 3 hours of tight work!!!! . so there must be a shortcut that i dont know or something wrong whit me.
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Re: SketchyFFD (Free Form Deformation)

Postby Fletch » Tue Mar 18, 2008 11:00 pm

hmm... I can see 2 ways to do this with FFD rather quickly... but as far as mm acuracy goes... not so confident.

Draw harp shape with general thickness in elevation. Use a higher-poly arc so that the segments are not as bad. The group it and FFD... x3... I think. Then you should be able to play for a while to get it to look as you want.
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Re: SketchyFFD (Free Form Deformation)

Postby GreenToaster » Tue Mar 18, 2008 11:54 pm

I would name my next child SketchyFFD if we could make the edge curves (borders) static or locked.

Any possibility this could be worked out?

Danke,

Brad
:)
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Re: SketchyFFD (Free Form Deformation)

Postby Fletch » Wed Mar 19, 2008 6:36 am

:lol: that's funny.

and YES... this would be VERY COOL INDEED.
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Re: SketchyFFD (Free Form Deformation)

Postby kwistenbiebel » Wed Mar 19, 2008 7:21 am

GreenToaster wrote:I would name my next child SketchyFFD if we could make the edge curves (borders) static or locked.


Indeed, that would be great as that would allow making a FFD group of parts of the organic shape . Manipulating that part would hold a seamless transition with the rest of the object.
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Re: SketchyFFD (Free Form Deformation)

Postby davecoopstl » Fri Mar 21, 2008 5:04 pm

So i'm using SketchyFFD on a surface I created with SoapSkin Bubble.

It works, however the FFD nodes are not aligned in the group that the surface is drawn. They are created next to the surface. So when I'm editing the nodes, I can't really tell which one is relative to which part of the surface.

Why are my nodes not aligned with my group when they are created?

Am I doing something wrong?

Dave.
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Re: SketchyFFD (Free Form Deformation)

Postby CPhillips » Fri Mar 21, 2008 6:11 pm

Try exploding and regrouping the geometry. The FFD script wants the geometry positioned in a certain way inside the group.

davecoopstl wrote:So i'm using SketchyFFD on a surface I created with SoapSkin Bubble.

It works, however the FFD nodes are not aligned in the group that the surface is drawn. They are created next to the surface. So when I'm editing the nodes, I can't really tell which one is relative to which part of the surface.

Why are my nodes not aligned with my group when they are created?

Am I doing something wrong?

Dave.
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Re: SketchyFFD (Free Form Deformation)

Postby davecoopstl » Fri Mar 21, 2008 7:03 pm

CP - Thanks! That worked like a charm.

I do think it would be easier to control if the nodes were directly ON the surfaces that you are trying to deform. So you knew EXACTLY what part of the surface the node controlled.

At least they are in a relative position, now that I've exploded and re-grouped.

Dave.
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Re: SketchyFFD (Free Form Deformation)

Postby CPhillips » Sat Mar 22, 2008 3:41 am

davecoopstl wrote:CP - Thanks! That worked like a charm.

I do think it would be easier to control if the nodes were directly ON the surfaces that you are trying to deform. So you knew EXACTLY what part of the surface the node controlled.

At least they are in a relative position, now that I've exploded and re-grouped.

Dave.

The math is such that the control points need to be created exactly on a 3d grid. :(
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Re: SketchyFFD (Free Form Deformation)

Postby CPhillips » Sat Mar 22, 2008 4:05 am

I posted a new version with a few minor changes.

Update Mar 21.
-Moved all FFD right click menu items to a sub menu.
-Fixed a bug that forced you to have a least 2 control point in each direction. You can now have do 2D grids. IE. 1x4x3.
-Added an option to create a NxN 2d patch. A grid with a control point at each intersection.

Get it here:
download/file.php?id=6745
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Re: SketchyFFD (Free Form Deformation)

Postby Fletch » Wed Mar 26, 2008 6:22 pm

thank you Chris! the 2D grid ability is Key!
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Re: SketchyFFD (Free Form Deformation)

Postby alz » Wed Mar 26, 2008 9:01 pm

CPhillips wrote:-Added an option to create a NxN 2d patch. A grid with a control point at each intersection.


I mis-read this at first -- I thought you were saying you made it possible to encase the model in a grid box, rather than floating points (to help visualize the distances between points).

Great work over all! I'd love to see SU incorporate this as a scale tool (lattice) option.

--alz
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Re: SketchyFFD (Free Form Deformation)

Postby GreenToaster » Wed Mar 26, 2008 10:40 pm

-Added an option to create a NxN 2d patch. A grid with a control point at each intersection.
BEAUTIFUL!!! THANK YOU!!! :ecstatic:
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Re: SketchyFFD (Free Form Deformation)

Postby kwistenbiebel » Sat Mar 29, 2008 12:36 am

I am having trouble with the new FFD.
I made a so called 'TIN', made a 4,4,4 FFD out of it and wanted to let the surface curve upwards so I selected the points of the short outer edge and moved them up.
The FFD result however is a mesh soup.... :(

before:


after:
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Re: SketchyFFD (Free Form Deformation)

Postby GreenToaster » Sat Mar 29, 2008 1:05 am

Hey, that's very cool . . .
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