Abstract: "We present a technique, 'Dynamic Constraints,' for controlling the positions and orientations of rigid bodies in computer graphics models. The technique addresses the issue of providing control over a physically-based model, in which the bodies' behavior is determined...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	Barzel, Ronen (VerfasserIn)
Format:	Buch
Sprache:	English
Veröffentlicht:	Pasadena, CA, Computer Science Dep. 1988
Schlagworte:	Computer graphics Computer simulation Dynamics > Computer programs Hochschulschrift
Zusammenfassung:	Abstract: "We present a technique, 'Dynamic Constraints,' for controlling the positions and orientations of rigid bodies in computer graphics models. The technique addresses the issue of providing control over a physically-based model, in which the bodies' behavior is determined by simulation of Newton's Laws of Motion. The 'Dynamic Constraints' technique allows the modeler to control the configuration of bodies in a model by specifying constraints which must be met and maintained, as the simulation unfolds. To meet the constraints, we introduce forces into the model; these 'constraint forces' forces are applied to the bodies that are constrained. We use an inverse dynamics method to derive a linear 'constraint-force equation,' whose solution yields the values of the constraint forces We continually solve the constraint-force equation during the simulation of a model, so that the bodies' behavior will be consistent with the constraints. This thesis is accompanied by a narrated 10-minuted videotape, 'Caltech Modeling Demos, 1987' [not part of library collection] that contains several animations demonstrating the 'Dynamic Constraints' technique. This thesis additionally includes a glossary of terms relating to physically-based modeling and dynamic constraints.
Beschreibung:	Zugl.: Pasadena, Calif., Calif. Inst. of Technol., Diss.
Beschreibung:	XVIII, 60 S. graph. Darst.