Graphics Reference
In-Depth Information
Up vector
y
View vector
Observer
x
z
Center of
interest
FIGURE 2.2
The up vector flips as the observer's position passes straight over the center of interest.
y
x
Object
Space
Object transformed
into world space
z
Up vector
Observer
y
Angle of view
View vector
x
Center of interest
z
World
Space
View Frustum
FIGURE 2.3
Object-space to world-space transformation and the view frustum in world space.
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