using a signed distance function to find the distance to the surface. See also Implicit curve References Further reading Gomes, A., Voiculescu, I., Jorge, J., Wyvill, B., Galbraith, C.: Implicit Curves and Surfaces: Mathematics, Data Structures and Algorithms, 2009, Springer-Verlag London, Thorpe: Elementary Topics in Differential Geometry, Springer-Verlag, New York, 1979, External links Sultanow: Implizite Flächen Hartmann: Geometry and Algorithms for COMPUTER AIDED DESIGN GEOMVIEW K3Dsurf: 3d surface generator SURF: Visualisierung algebraischer Flächen Surfaces Computer-aided design Geometry processing