04/23/2002
15-462 Graphics I
34
Vector Fields
•Visualize
vector at each (x,y,z) point
–Example:
velocity field
–Example:
hair
•Hedgehogs
–Use 3D
directed line segments (sample field)
–Orientation
and magnitude determined by vector
•Animation
–Use
for still image
–Particle
systems
Blood flow in
human carotid artery