Animate an Iris is a step-by-step
tutorial that describes how to animate an Iris using Autodesk Maya.
This tutorial is aimed for users who are having a familiarity with
The first step in animating an Iris is to create
two curves and set it as shown in Figure 1. After that, put it in
a layer and template it.
Figure 1: Layer with Two Curves
Now the nest step is to create a polygonal plane as shown in Figure
Figure 2. Polygon.
The next step is to set the pivot of the new object to the place
marked red in Figure 2. After that, you need to group the object
to itself. Now the pivot of the group is at the origin. Next, duplicate
the group using the SHIFT+D keys, then rotate the duplicated object
at a 30 degree angle and keep pressing SHIFT+D until it forms a
proper circle. Now the circle will look like Figure 3.
Figure 3. Completed circle.
The next step is to create a locator and add an attribute to it
with a float value with min 0 and max 10 and default 0
Figure 4. Adding attribute.
Next, use set driven key with the locator new attribute
as driver and all the duplicated planes as drivers and key it.
Now animate the new attribute value and notice that you will get
an iris opening effect.