About etExtractConjugateLines and etExtractCurvatureLines


#1

Hi everyone, I am very confused the two commands, even though I see the help file. I would like to ask whether there is more about the explanation of these two commands and learning materials.


(Alexander Schiftner) #2

Hi, these commands allow you to trace principal curvature lines (etExtractCurvatureLines) and so-called conjugate lines (etExtractConjugateLines). Both are mostly useful to get an overview of how the connectivity of a quad mesh should look like if you want to achieve planar quads. If you want to read about those details I recommend to look into the following papers:

Geometric Modeling with Conical Meshes and Developable Surfaces

Freeform surfaces from single curved panels
http://www.geometrie.tuwien.ac.at/geom/ig/publications/oldpub/2008/panels08/panels.html

Designing Quad-dominant Meshes with Planar Faces.
http://www.evolute.at/technology-en/scientific-publications.html?id=64