What started off as an experiment with morphing ended up as a agreeable investigation of Bongo’s 2.0 facilities. The bug-fix of the custom tweening in the Beta 6 release came just in time to give the windmill a good swing.
A drawback is that morphing isn’t operational for trimmed surfaces. A small hole in the wings for the spindle would be the icing on the cake. An item for the wish list!
The model is Rhino 4.0, renderer is simply Rhino Render.

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Comment by Paul Hecko on May 30, 2012 at 2:35am
Thanks Luc, that is very helpfull and I'm sure others will benefit from that description.
Comment by Luc Adriaenssen on May 30, 2012 at 2:16am

The bending of the wings is done by the technique called ‘morphing’, by which separate controlepoints of a surface are animated. You can find and introduction on http://bongo3d.ning.com/page/simple-morphing

A stumbling block was how to create the triangular surfaces for the wings, since morphing isn’t operational on trimmed surfaces (wish-list Marika!). And that’s what you get when Rhino’s _SrfPt command is used to create a triangular surface. I tried many various ways. Finaly creating the triangle’s edges by 3 separate lines (no polyline) and using the _EdgeSrf on them did the trick. Then I used _Rebuild on the surface to increase the number of control points for more detailed manipulation.

For the animation of the Render viewport I used the Named Views Animation technique – see http://bongo3d.ning.com/page/animating-named-views.

The windmill model is in attachment at my discussion of  November 26 2011 - http://bongo3d.ning.com/forum/topics/windmill-model- so you can have a look there and use it as a platform for further conversation.

And... thanks for the compliment.

Comment by Paul Hecko on May 29, 2012 at 7:59am

I really like this. How  did you get the pieces to bend? I've tried to use the Rhino BEND command without any luck. Yes, it is great stuff.

Comment by Charles Fee on March 19, 2012 at 12:46pm

RH-4/BO-2. Rh-4 is a 32-Bit system. BO-2 is an excellent product ! In this case, CLEARLY RHINO Render is adequate for this task. I find it to be QUITE capable for MUCH of my work. That it renders a reasonable image fairly quickly is a HUGE plus ! This certainly tells the story, which is really the point ! Good work.

Comment by Andrew le Bihan on October 26, 2011 at 4:26am
Great stuff!

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