Parametric deformation

• Use succession of parameterized space varying deformation
• • Rotation: Bending, Twisting
  • Scaling: Squeezing/tapering, Stretch

• Old idea: First proposed in
  Alan H. Barr. Global and Local Deformations of Solid Primitives. SIGGRAPH 1984

• (+) Explicit formulation \(q=f(p)\)
• (-) Limited degrees of freedom