Terrapin is a series of experiment in exploring functions of one complex variable.
- moebius.html maps a grid in the z plane onto the w plane demonstrating Moebius transformations (also known as linear fractional transformations).
- Generalise moebius to arbitrary complex functions (watch for cuts).
- The idea is that, given a function z: C -> C, you move a turtle in the z plane. At the same time, terrapin maps the turtle's trajectory, displaying the resulting w plane.