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Animated feather coats using field lines

Bangay, Shaun 2007, Animated feather coats using field lines, in Afrigraph 2007 : proceedings of the 5th international conference on computer graphics, virtual reality, visualisation and interaction in Africa, Association for Computing Machinery, New York, N.Y., pp. 169-211, doi: 10.1145/1294685.1294713.

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Title Animated feather coats using field lines
Author(s) Bangay, Shaun
Conference name International conference on computer graphics, virtual reality, visualisation and interaction in Africa (5th : 2007 : Grahamstown, South Africa)
Conference location Grahamstown,, South Africa
Conference dates 29-31 Oct. 2007
Title of proceedings Afrigraph 2007 : proceedings of the 5th international conference on computer graphics, virtual reality, visualisation and interaction in Africa
Editor(s) Spencer, Stephen N.
Publication date 2007
Conference series International Conference on Computer Graphics, Virtual Reality, Visualisation and Interaction in Africa
Start page 169
End page 211
Total pages 215 p.
Publisher Association for Computing Machinery
Place of publication New York, N.Y.
Keyword(s) feather coat
field line
animation
collision detection
Summary The tedious task of manually placing feathers on computer animated objects involves aligning feathers, ensuring that they do not insect each other or penetrate the surface, deforming every feather to match the local surface features, and ensuring that the feather coat is consistent when the underlying object is animated.

We present a technique for generating a feather coat over an object. Feather orientation is specified quickly and easily, feathers are deformed while ensuring collision prevention, and the coat can be animated. We create a vector field in the space surrounding the body object and deform feathers to align with the field lines. The non-intersection property of the field lines ensures that feather intersections are avoided. We provide a formulation of a suitable vector field and demonstrate that it is capable of producing realistic feather coats. The process can easily be integrated into the work-flow of standard modelling and animation processes.

We show examples of feather coat creation on a range of objects, proving that field line based placement of feather coats provides the desired functionality for feather modelling and animation.
ISBN 9781595939067
Language eng
DOI 10.1145/1294685.1294713
Field of Research 080103 Computer Graphics
Socio Economic Objective 890299 Computer Software and Services not elsewhere classified
HERDC Research category E1.1 Full written paper - refereed
Copyright notice ©2007, Association for Computing Machinery
Persistent URL http://hdl.handle.net/10536/DRO/DU:30039218

Document type: Conference Paper
Collection: School of Information Technology
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