The scene contains a bump-mapped floor and a bump-mapped swimming fish. The fish is a cylinder which has been warped using a vertex program. The “wriggles” of the fish body are simulated using a sin wave which starts from the fish midline towards the tail. This animation is controlled using an interface which allows the user to vary the “wriggles” speed. There is also an interface control to switch from phong shading to toon-shading.
A deformable bodies simulator based on a standard non-linear strain finite element simulation as in O’Brien et al. [1999]. This approach required incredibly small time steps.
A particle system that uses an attractor force that pulls particles to a respective position in space. These positions were based on vertex positions from an obj file.
The ground is procedurally generated using a random midpoint method and smoothed using a neighborhood smoothing filter. The trees were generated by different procedural rules. The scene uses OpenGL material and lighting.