The MPEG: 1.7 Megs
Didi is an adventurous warrior who flies
around treacherous snowy mountains with a magical helmet.
Unfortunately, this is quite a cheap helmet without a proper chin strap
and she must hold onto its horns for safety.
To push the plot along, monster birds appear out of nowhere.
They don't peck out her eyes, but
our heroine is unluckily an ornithophobic;
she loses her grip on the horns and tumbles to her death.
The clouds in the title page are randomly generated density maps
rendered as an isosurface. The icy mountain range are fractal surfaces.
The giant birds of prey are hierarchically
modeled with quadric surfaces,
and the deformed horns as menacing beaks.
All the birds are copies of one bird translated and
rotated into place.
Didi's suit of armor and her magic helmet
are hierarchically modeled with quadric surfaces:
ellipsoid, cones, cylinders, and parabloids.
The horns are also a quadric surface with the equation:
H(theta,phi)= ( .5*(1-phi)*sin(2*pi*(theta+1)) - 1.4*sin(1.8*phi),
phi , .5*(1-phi)*cos(2*pi*(theta+1)))
where 0 < theta < 1 and 0 < phi < 1
Her body has more than sixteen degrees of freedom,
ten for her arms, elbows, and hands, and six for her legs and knees.
Since she is flying about with a propellor helmet, we
simulated a jerky motion by rotating her body
slightly on the x and y axis periodically.
Didi's Facial Expressions
Didi's face is a polygonal mesh in which individual groups of
vertices are deformed according to a convoluted cosine function.
This animation uses the result of another project by Dan Hung and Heji Kim:
more information about the techniques used to animate human
facial expressions can be found
In our animation,
she smiles initially at the beauty of the scene before
her, and later screams with fear as she falls to her death.