The modeling of curves in 3D geometry presents a challenging problem for users of graphics systems. An artist or animator wants to precisely control the final shape, especially when the curves contact complicated surfaces.
This talk addresses the problem with a novel 3D curve primitive called a cord. A cord is defined by a guide curve, which represents an approximate 3D path the user wishes the cord to follow around the geometry. The guide curve, along with various attributes, analytically and continuously defines the shape of a cord. Cords can exhibit the visual appearance of a range of materials, including strings, wires, and rubber bands, while allowing animators the precise control of shape needed for keyframe animation. Cords also find applications in visualization and nonphotorealistic rendering and will be shown in the context of the animated short film “Ryan,” which won the Oscar this year for best animated short film.

Web page for the Math Club: http://www.math.uconn.edu/mathclub
USG funded