SARDF: Signed approximate real distance functions in heterogeneous objects modeling
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Authors: Fayolle, P.-A., Pasko, A.A. and Schmitt, B.
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Authors: Fayolle, P.A., Pasko, A. and Schmitt, B.
Volume: 4889 LNCS
Distribution of material density and other properties of heterogeneous objects can be parametrized by the Euclidean distance function from the object boundary or from special material features. For objects constructed using geometric primitives and set-theoretic operations, an approximation of the distance function can be obtained in a constructive manner by applying special compositing operations to the distance functions of primitives. We describe such operations based on a smooth approximation of min/max functions and prove their C 1 continuity. These operations on distance functions are called SARDF operations for Signed Approximate Distance Functions. We illustrate their applications by 2D and 3D objects models with heterogeneous material distribution. © 2008 Springer-Verlag Berlin Heidelberg.