A round forest-green and ivory printmaking-style emblem with a large veined leaf, an ink-like drop, a seedling and ECOGRAPHICS lettering.ecographics.org

Let movement reveal the part the still picture cannot carry.

Animation earns its place when change is part of the meaning.

It can show a sequence, transformation, shifting viewpoint, or dynamic relationship. The design question is what the audience should recognize through that movement.

A form A useful question it may serve
Still picture How are these parts arranged?
Sequence What changes between one state and another?
Animation How does the relationship develop or become visible through movement?
Interactive model What happens when the person chooses what to inspect or vary?

The forms can work together. One is not a universal replacement for the others.

Howard Pearlmutter's ecological animation used software he wrote for modeling and rendering. His work also includes dynamic simulation and commercial interactive systems where the audience had a practical reason to inspect a representation.

For Ecological Design: Inventing the Future, geometric structure became moving imagery. In factory-design work needed by GM and Ford users, animation and interaction helped make technical models inspectable for executives.

Different purposes gave the movement different jobs.

For your subject, begin with what changes. Is movement central to the relationship, or would a clearer still representation carry the point? What context will help a viewer interpret the sequence?

Explore time, geometry, the documentary story, or visual inquiry.

Make the motion part of the explanation.