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Sketching subdivision surfaces



Grimm, C. ; European Association for Computer Graphics -EUROGRAPHICS-; Association for Computing Machinery -ACM-, Special Interest Group on Graphics -SIGGRAPH-:
Sixth Eurographics/ACM Symposium on Sketch-Based Interfaces and Modeling 2009. Proceedings : August 1-2, 2009 · New Orleans, LA, USA, co-located with SIGGRAPH 2009
New York: ACM, 2009
ISBN: 978-3-905674-19-4
Symposium on Sketch-Based Interfaces and Modeling (SBIM) <6, 2009, New Orleans/La.>
International Conference on Computer Graphics and Interactive Techniques <36, 2009, New Orleans/La.>
Fraunhofer IGD ()
sketching; subdivision; 3D modeling; approximation

We describe a 3D modeling system that combines subdivision surfaces with sketch-based modeling in order to meet two conflicting goals: ease of use and fine-grained shape control. For the excellent control, low-poly modeling is still the method of choice for creating high-quality 3D models, e.g., in the games industry. However, direct mesh editing can be very tedious and time consuming. Our idea is to include also stroke-based techniques for rapidly modeling regular surface parts. We propose a simple and efficient algorithm for converting a 2D stroke to a control polygon suitable for Catmull/Clark subdivision surfaces. We have realized a small but reasonably rich set of interactive modeling tools to assess the expressiveness of stroke-based mesh design with a number of examples.