# Miscellaneous / UIUC CS 418 Study Guide

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## Can you name the UIUC CS 418 Study Guide?

#### by nathangbaird Quiz not verified by Sporcle

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atomic object of shading
texture element
picture element
volume element
potential pixel
hierarchical models
push matrix to enter node, pop matrix to go back up tree
the whole scene becomes a hierarchical model
animation
specifying specific scenes and then interpolating the rest
animation of oject is determined by others nearby it
vertex attached to multiple joints, etc with weights
quaternions
4D number
sqrt( w^2 + x^2 + y^2 + z^2)
(s*s' - v dot v', v x v' + s*v' + s'*v)
(s, -v)
comp(q) / norm(q)^2
axis u, point p, angle theta -> q = ( cos(theta/2), u * sin(theta/2) ) -> q (0,p) q^-1 -> ?
q1(q1^-1 * q2) ^ alpha, 0 < alpha < 1
particle animation
spring and gravity
surfaces
ax + by + c = 0, for example
x = t, y = 2t, for example
type of surface that can be represtented by a 4X4 matrix
colors
C=A' + (1âˆ’alpha)*B' with A' = alphaA*A and B' = alphaB*B
jaggies
compute how much of the pixel is covered by the object as use that amount as an alpha value
eyes can't comprehend motion fast enough that it appears different from what it actually is
apply a function to make changes to a given one
the group of pixels used to make a filtering change to a given pixel
one side of light source can reach point but the other side can't
object absorbs some of the light passing through it
object redirects the light heading towards it
ray tracing
typical way of tracing from the eye to the light source, instead of from the light to the eye
method of shooting out rays from the eye, one for each pixel
ray from a light to surface point, determined by ray casting to be the surface for a given pixel
a ray algorithm but recursive calls to trace (involves shadows, reflections, and transmissions)
divide space into cells, remember what geometry is where, to make ray tracing more efficient
hierarchical bounding volumes, BSP trees, octtrees, and regular 3D grids
colors
dimension of the space that humans see color in
cyan, yellow and magenta
hexcone color space
s, m and l in our retinas

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