1. A method for generating a computer graphic of a shape to be animated, said shape having at least one joint wherein the shape changes about the joint, comprising: providing a mesh comprising at least three points, each point defined in three-dimensional space, said mesh indicative of the shape in a base position; providing information indicative of the position of the points in the mesh corresponding to the shape at predefined positions wherein the shape has changed about the joint with respect to the base position; generating the position of the at least three points as an interpolation between the information indicative of the position of the points in the mesh corresponding to the shape at at least two selected positions from the predefined positions; wherein the at least two positions are identified as the closest positions in parameter space to a desired position.