Web Browsing on Small Screen Devices by rt3463df

VIEWS: 6 PAGES: 29

									Animation
      CPSC 533c Fall 2005

               Ying Zhang
                Agenda

• Animation: can it facilitate? (Barbara Tversky)

• Principles of Tranditional Animation Applied to 3D
  Computer Animation (John Lasseter)
      Animation: can it
         facilitate?
• What is good about graphics used in
  teaching complex systems?
If used properly, static graphics enables
  comprehension, learning, memory,
  communication and inference of complex
  process and structures.
What is good about animated graphics?
Animated graphics should be even better
  and more effective.
      Animation: can it
         facilitate?
• What is bad about animated graphics?
• Animation conveys more information or
  involve interactivity that overloads
  audience’s visual systems.
• So , animation may be ineffective because
  they are often too complex or too fast to
  be accurately viewed.
Judging Animation based
   on two Principles
• The Congruence Principle:
  – The structure and content of the external
    representation should correspond to the
    desired structure and content of the internal
    representation.
  – So animation may apparently be compelling and
    convey concepts of change and expressing
    complex process
  –  but check out the following:
       Animation: can it
          facilitate?




Due to several animated processes going on at the
  same time, animation interfering with the
  information that was supposed to be conveyed to
  the audience.
      Animation: can it
         facilitate?
• http://www.kevene    • http://www.kevene
  y.com/Vstirling.ht     y.com/Stirling.html
  ml
• http://www.interac
  tivephysics.com/si
  mulations.html
       Animation: can it
          facilitate?
• A good animated graphics must be
  comparable to informationally
  equivalent static graphics.
 e.g. In Physics:
 http://physics.nad.ru/Physics/English/mech.htm
        Animation: can it
           facilitate?
• Compared with static graphics in some
  cases, animation allows interactivity while
  the static condition does not, so the
  apparent benefit of using animation is due
  to interactivity rather than animation
  itself.
• E.g.
  http://www.exploratorium.edu/origins/cern/tools/accelerat
  e.html
       Animation: can it
          facilitate?
• Animations are often interactive:
  interactivity is known to facilitate
  performance.
• While animation alone is usually distracting
  and is not effective as a teaching tool.
• So what is actually facilitate learning
  performance is not animation but
  interactivity.
      Animation: can it
         facilitate?
• Apprehension Principle:
  – The structure and content of the external
    representation should be readily and
    accurately perceived and comprehended
  – So when used in teaching complex systems,
    animated graphics are usually hard to view, and
    should convey discrete information rather than
    continuous , and provide interactivity.
         Animation: can it
            facilitate?
• E.g. horse movement: http://www.funnysnaps.com/igait.html
       Animation: can it
          facilitate?
• In conclusion, what appeared to be the successes
  of using animation are not successes.
• According to the principles , animation should be
  slow and clear enough for observers to
  understanding the underlying information.
• Accompanied with interactivity, the drawbacks of
  animation may be overcome and its advantages
  might even be enhanced.
• However, whether animations are more effective
  than static graphics for demonstrating complex
  operations is still unknown.
Principles of Traditional Animation
      Applied to 3D Computer
       Animation– John Lasseter

• The key to make good 3D animation is the application
  of traditional hand drawing technique and principles to
  3D computer animation.
Principles of Traditional Animation
Applied to 3D Computer Animation
• Squash and stretch      •   Slow in and out
• Timing                  •   Arcs
• Anticipation            •   Exaggeration
• Staging                 •   Secondary action
• Following through and   •   Appeal
  overlapping action      •   Personality
• Straight ahead action
  and pose-to-pose
  action
Principles of Traditional Animation
Applied to 3D Computer Animation
• Principles of Traditional Animation:
  – Squash and Stretch
     • Defining the rigidity and mass of an object by
       distorting its shape during an action.
     Such as an object squash flat and stretch out
       drastically, it conveys the sense of softness.
    e.g.
    http://www.idleworm.com/how/anm/01b/bball.s
    html
Principles of Traditional Animation
Applied to 3D Computer Animation
• Timing
  – Spacing actions to define the weight and size
    of objects and the personality of characters.
    It gives meaning to movement.
  e.g. Luxo’s Jr:
    http://www.cs.ubc.ca/~yingzhan/cs533c/prese
    nt/animated-bw-luxo.gif
Principles of Traditional Animation
Applied to 3D Computer Animation
• Anticipation : preparation for the action.
  – Purpose:
     •   Anatomical provision for an action
     •   Catch audience’s eyes
     •   Emphasize heavy weight
     •   E.g.
         http://www.cs.ubc.ca/~yingzhan/cs533c/present/bat
         ter.gif
Principles of Traditional Animation
Applied to 3D Computer Animation
• Staging: present an idea unmistakably
  clear
Principles of Traditional Animation
Applied to 3D Computer Animation
• Following through and overlapping
  action
  – termination of an action and establishing
    its relationship to the next action
Principles of Traditional Animation
Applied to 3D Computer Animation
• Straight ahead action
  – Animator works straight from his first drawing
    in the scene.
• Pose-to-pose action
  – animator makes separate drawing focusing
    from pose to pose, and then draws the
    inbetweens.
Principles of Traditional Animation
Applied to 3D Computer Animation
•       Slow in and out:
    –     The spacing of the inbetween frames to
          achieve subtlety of timing and movement
e.g. bouncing ball:
Principles of Traditional Animation
Applied to 3D Computer Animation

• Arcs:
   – The visual path of action for natural
     movement.
Principles of Traditional Animation
Applied to 3D Computer Animation
• Exaggeration
  – Emphasizes the essence of an idea via
    the design and the action.
  – It works with any other principles, it
    has to be used carefully; otherwise, it
    will also make a character look
    unrealistic.
  e.g. Andre and Wally B
Principles of Traditional Animation
Applied to 3D Computer Animation
• Secondary action:
  – an action that results directly from
    another action.
Principles of Traditional Animation
Applied to 3D Computer Animation
• Appeal:
  – Anything that a person wants to see
    such as a quality of charm, pleasing
    design, simplicity, communication, or
    magnetism.
e.g. Luxo Jr.
Principles of Traditional Animation
Applied to 3D Computer Animation
• Personality:
  – the character must have a desired
    personality to become alive and
    attractive to the audience.
  – E.g. Tin Toy:
  – E.g. Geri’s game
Principles of Traditional Animation
Applied to 3D Computer Animation
• The essence of making appealing
  animation is about mixing traditional
  artistic sense into animation drawing
  with the help of hardware and
  software.
Movie?

								
To top