2 research outputs found
Computer animation of deformable bodies
Available from British Library Document Supply Centre- DSC:DXN060923 / BLDSC - British Library Document Supply CentreSIGLEGBUnited Kingdo
Dynamic animation of n-dimensional deformable objects
This paper presents a new, accurate, efficient and unified method for dynamic animation of one, two or
three-dimensional deformable objects. The objects are modelled as d-dimensional juxtapositions of ddimensional
patches defined as parametric blending of a common d-dimensional mesh of 3D control
points. Animation of the object is achieved by dynamic animation of its control points. This ensures that at
each time step the object shape conforms to its patches definitions, and, thus, that every property implied
by the nature of the blending functions is verified. Dynamic animation of these continuous models implies
no “matter discretising” as the control points are not considered as material points but moreover as the
degrees of freedom of the continuous object. A generic (both for blending functions nature and object
intrinsic dimension d) mechanical model reflecting this idea is proposed. Then, according to this
modelling idea, a convenient generic dynamic animation engine is built from Lagrangian Equations. This
engine relies upon an accurate and very efficient linear system. Forces and constraints handling as well as
numerical resolution process are then briefly discussed in this scheme