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.