Stargate Iris

Support Animation and Rigging
1

I wanted to add something similar to the iris you might see in stargate or something like this: http://www.youtube.com/watch?v=kbAP09YbCc4

I can get the pieces to fit together, but I don’t know where the axis of rotation has to be. I have tried dozens of possibilities using circles and octagon as guides for the blades, but their rotation was always off. Anyone have any ideas?

2

look up camera iris that should give you some ideas

3

I found this old one. It is made with shape keys. I did not remember that. I try objects and rotation drivers if I did it again. I know I have a older one with drivers I will look for. but the shape key has a different look.

lens.blend (431 KB)
here it is. It was along time ago.lens 3.blend (535 KB)

4

As heddheld said. This might help, it is a circle with dupliverts.

iris2.blend (321 KB)

5

Here´s a Test i did last week or so. You can control the blades with the empty by rotating the Z-axe. Have fun…
http://www.astat8.de/Blades.blend

6

I like iris 2 with dupliverts easy to set up.

7

Thanks guys. After the first reply, I looked at the iris on camera’s and noticed that my understanding was flawed, I thought the blades ran along the sides of each other. After thinking about it I released they had to overlap. Here is just a small test animation I did:

Does anyone know why in my blend and the Blades blend above, if I try to parent the blades to anything, they stop working?

8

The empty is rotated that way. I think want to make the rotation of the blades at right angles to the world. How do I say it divisible by 90 and rotate on axis or change the space settings on the constraint.