Risto A. Paju
This animation presents two examples of my live OpenGL demos, as
used in Aino Martiskainen's stage play Pyydettiin siipiä. Both are
based on functions in R^2 of the form f(z) = z + a*sin(b*z) +
c*sin(d*z') where the sines are computed componentwise, and z' means
z with its x and y components swapped. It was inspired by Pickover's
Popcorn algorithm. To break up the regular lattice, I have added
frequency modulation into both terms. The function parameters vary
continuously over time, based on a random walk process. The first
section shows continuous iteration in time, and each frame is a
successive iterate. New colour percolates in from the edges to
further visualize the flow. The second part uses the same function
with the same progression of parameters, but each frame is an
independent IFS graph using my colour overlay method. This way, the
same function can portray very different moods in the play.