Hello World,

I have two flapping birds (animated Bgeo)
They are flapping in the same direction with same tempo.
How can I altinate the flapping direction of the two girds without going back to the original hip file.

Steve

You can use a Time Shift SOP to offset the animation.

Cheers!
steven

Thank you very much.
I will try it now.
Cheers,
Steve

I am using Time Shift SOP already to adjust and control the tempo speed of the flapping by setting $F*2 (or any numbers) in Frame window.
Now, How can I off set the direction of the flapping animation ?
Can you help me further?
Thanks
Steve

I'm not sure about your intention, just to clarify…
You're not talking about a simple rotation?

Hi,

Yes, I am talking about the simple rotation.
I have two idendical Bird (Animated Bgeo Obj) flapping or rotating their wing with same tempo speed and same direction.
I am using TimeShift SOP to adjust the frequence of the flapping.
How can I altinate the flapping of the wing one from the other bird.
Thank you in advance.

Steve

Ah ok. So if I understand you correctly, you want to deform parts of the wings.

Probably, one of the first SOPs I would have a look at is the magnetSOP.
You could feed in some metaballs into input 2 that define the area that you can manipulate (rotate, transform…) with the sop's parameters.

http://www.sidefx.com/docs/houdini11.1/nodes/sop/magnet [sidefx.com]
and also http://www.sidefx.com/docs/houdini11.1/nodes/sop/bulge [sidefx.com]

Another solution could be the twistSOP: http://www.sidefx.com/docs/houdini11.1/nodes/sop/twist [sidefx.com]

Or even a combination of them.

Have a look at the examples, they are very helpful!