The goal was to combine 3D animation with the handpainted look of classic cartoons.
EARLY LOOK TESTS FOR THE SOUTHPOLE LANDSCAPE
The first look tests didn't really have an "icy" look and feel to them. It took quite some time and experimentation to get a rendition of ice that was both cold and "icy" as well as fitting the style of the 2Dish cartoony look.
EARLY CONCEPTS AND LOOK TESTS FOR THE DIFFERENT SETTINGS
At the same time looks for the other settings of the story where developed.
FINAL ICE LOOK
The final setup was a very simple shader that does not use any transparency or subsurface scattering functions.
For the non-nerds that are not familiar with this geek-speak: A "shader" is basically a series of instructions how the computer should render the way a surface looks. "Subsurface scattering" is the process where light gets scattered within semi-transparent materials.
Wireframe Model of an iceberg.
This how such an ominous shader setup looks
FINAL OUTERSPACE LOOK
Rendered and composed view of the Galactic Burger Joint
Every 3D animated character needs a so called rig to be animated. A rig essentially gives the character the functionality of a puppet.
During animation the animation artist therefore animates the controller objects instead of the actual geometry of the figure.
Keyframed controller objects of the above animated walk.
Effects that look as if they where drawn by hand are achieved by using a system that emits particles from the area where the penguin is swimming.
Different layers of particles are emitted.
Through clever compositing the particles are made to look as if they where traditionally drawn water bubbles.
The vending-machine-turned-rocket blast is done with the same particle technique.
The image output from a 3D render engine is never a final image. In most cases it needs some sort of postprocessing.
In SUNDAY postprocessing included color correction, the addition of the above 2D effects and Background.
And the creation of a unique look that removes the cold and harsh perfectness of a computer generated image.