Forest is an expressive tool for drawing a forest using procedural trees, lighting and wind. What the user draws depends on where they click and drag. If the click on the ground and drag upwards then a tree will grow. If the click in the clouds and drag downwards then lighting with flash. If they click and drag anywhere else then a wind will blow the trees and clouds.
This was an individual project for Ali Mazalek's Fall 2011 class implemented using Processing.