Skin: a constructive approach to modeling free-form shapes

摘要

We present a new particle-based surface representation with which a user cna interactively sculpt free-form surfaces.The particles maintain mesh ocnnectiviyt and operte under rules that lead them to form triangulations with properties that make them suitable for use in subdivision.A user interactively guides the particles,which we call skin to grow over a given collection of polyedral elements (or skeleons),yielding a smooth surface (through subdivision) that approximates the underlyign skeletal shapes.Skin resembles blobby modleing in the constructive approach to modleing it supports,but allows a richer vocabulary of skeleton shapes,supprots sharp creases where desired,and privodes a convenient mechanism for adding multiresolution surface detail.