Shape Modeling International (SMI) 2019

© Fraunhofer IGD

Shape Modeling International (SMI) (, also known as the International Conference on Shape Modeling and Applications, is an annual symposium that aims to promote the dissemination of new mathematical theories and novel computer techniques for modeling, simulating, and processing digital shape representations.

SMI 2019 is part of the INTERNATIONAL GEOMETRY SUMMIT (IGS) 2019 and will take place in Vancouver, Canada, June 19-21, 2019.

On Wednesday, June 19, Fraunhofer IGD will present a paper:

Effcient Slicing of Catmull-Clark Solids for 3D Printed Objects with Functionally Graded Material


In the competition for the volumetric representation most suitable for functionally graded materials in additively manufactured (AM) objects, volumetric subdivision schemes, such as Catmull-Clark (CC) solids, are widely neglected. Although they show appealing properties, e_cient implementations of some fundamental algorithms are still missing. In this paper, we present a fast algorithm for direct slicing of CC-solids generating bitmaps printable by multi-material AMmachines. Our method optimizes runtime by exploiting constant time limit evaluation and other structural characteristics of CCsolids. We compare our algorithm with the state of the art in trivariate trimmed spline representations and show that our algorithm has similar runtime behavior as slicing trivariate splines, fully supporting the benefits of CC-solids.

Further information: