Animation

• movement within scene, movement of camera over time
• much work!
• interactive vs non-interactive
  • flight simulation, games
  • film and video
  • scientific and industrial simulations
• tools for the artist
• character animation
• humans vs animals and robots
• subjective realism
• facial animation

Double Buffering

Keyframing

• from traditional animation
• cubic splines
  • parameters vs time
    

  • curved path through space
  • arc-length reparameterization, velocity curves
    

• direct specification of keyframes
• flexible but time consuming

Inverse Kinematics

• articulated figures
• animator controls `end effectors'
• IK adjusts intermediate joint angles as necessary

Motion Capture

• capture movement of real actors
• playback on CG character using IK
• technology: set of 6 DOF sensors
• problem: editing the motion after recording

Dynamics

• simulation
• laws of physics: F = ma
• solve for a, update position, display, repeat
• particle systems, bouncing balls
• swinging chains and ropes, falling objects
• control problem for humans and animals