LAP Lambert Academic Publishing ( 06.10.2009 )
€ 49,00
Implicit surfaces offer many advantages for sketch- based modeling systems, such as blending, CSG, and a procedural object hierarchy. Free-form deformation (FFD) is also extremely useful in this context, however existing FFD approaches do not support implicit surface representations, and FFD lattice manipulation is time-consuming compared to sketch- based techniques. In this thesis, an FFD technique suitable for implicit surface representations is described. To enhance real-time feedback, the problem is split into an approximate formulation used during interactive deformation, and a more robust variational technique which preserves desirable scalar field properties. As an interface to manipulate the deformation, a sketch-based volumetric peeling interface is introduced. The user''s task is to draw a curve on the surface, and pull or push the surface to the desirable position via the curve. Subsequently, the deformation is automatically defined. This technique has been implemented in a prototype implicit FFD system called Taco. Results created in Taco show that a desirable deformation can be easily achieved while preserving implicit properties.
Kitap detayları: |
|
ISBN-13: |
978-3-8383-1888-2 |
ISBN-10: |
3838318889 |
EAN: |
9783838318882 |
Kitabın dili: |
English |
Yazar: |
Masamichi Sugihara |
Sayfa sayısı: |
80 |
Yayın tarihi: |
06.10.2009 |
Kategori: |
Bilişim, BT |