Matt Gough Blog [closed]: Notes / Perspectives
Monday, Apr 26 2004, 02:41
Some notes in response to questions: [& personal perspectives]
if you wish to make detailed notations to describe a specific event, the body at rest [start and end] must be defined. transitions should be described in nested tags detailing all relevant aspects of the movement [impulse, cog, path, effort etc]. this is particular relevant if you wish to use your notation with avatars. many animation packages use a standing avatar as a starting default and end with your last instructions leading to some 'interesting' results.
the impulse tag is not confined by the degrees of freedom [dof]available in given joints according to human motion studies. the reasoning is that that in human motion we adapt the position of related joints or whole body alignment to allow full rotations. this can be observed clearly in salsa style dancing and contact improvisation. dof should be used to described how the body behaves not how it moves.
gesture is not movement, gesture can be made up of discreet movements. gestures are observer dependant. discreet, disparate movements can appear as a single global movement, xdsn can handle both observations.
xdsn can be used for animation. in any notation for animation system equal attention should be paid to the notation and mapping. it is this mapping that becomes part of the artificial body intelligence and aids realistic movement. present suppositions about ik/fk fd/id and simulated physics should be re examined in the context of human movement simulation. there is another way.
xdsn is bar oriented as opposed to part oriented, this is to ease human reading by presenting elements that occur in the same time frame together.
Filed by Article19 at 2:41 PM | 
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