A practical model for hair mutual interactions
Proceedings of the 2002 ACM SIGGRAPH/Eurographics symposium on Computer animation
Capturing the complexity of hair motion
Graphical Models
Simulating complex hair with robust collision handling
Proceedings of the 2005 ACM SIGGRAPH/Eurographics symposium on Computer animation
Interactive simulation of one-dimensional flexible parts
Proceedings of the 2006 ACM symposium on Solid and physical modeling
Super-helices for predicting the dynamics of natural hair
ACM SIGGRAPH 2006 Papers
Oriented strands: dynamics of stiff multi-body system
Proceedings of the 2006 ACM SIGGRAPH/Eurographics symposium on Computer animation
A Survey on Hair Modeling: Styling, Simulation, and Rendering
IEEE Transactions on Visualization and Computer Graphics
CoRdE: Cosserat rod elements for the dynamic simulation of one-dimensional elastic objects
SCA '07 Proceedings of the 2007 ACM SIGGRAPH/Eurographics symposium on Computer animation
ACM SIGGRAPH 2008 papers
A mass spring model for hair simulation
ACM SIGGRAPH 2008 papers
Realistic hair simulation: animation and rendering
ACM SIGGRAPH 2008 classes
Detail preserving continuum simulation of straight hair
ACM SIGGRAPH 2009 papers
ACM SIGGRAPH 2010 papers
A nonsmooth Newton solver for capturing exact Coulomb friction in fiber assemblies
ACM Transactions on Graphics (TOG)
A hybrid iterative solver for robustly capturing coulomb friction in hair dynamics
Proceedings of the 2011 SIGGRAPH Asia Conference
Optimized framework for real time hair simulation
CGI'06 Proceedings of the 24th international conference on Advances in Computer Graphics
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Artistic simulation of hair presents many challenges - ranging from incorporating artistic control to dealing with extreme motions of characters. Additionally, in a production environment, the simulation needs to be fast and results need to be usable "out of the box" (without extensive parameter modifications) in order to produce content efficiently. These challenges are only increased when simulating curly, stylized hair. We present a method for stably simulating stylized curly hair that addresses these artistic needs and performance demands. To satisfy the artistic requirement of maintaining the curl's helical shape during motion, we propose a hair model based upon an extensible elastic rod. We introduce a method for stably computing a frame along the hair curve, essential for stable simulation of curly hair. Our hair model uses a spring for controlling the bending of the curl and another for maintaining the helical shape during extension. We also address performance concerns often associated with handling hair-hair contact interactions by efficiently parallelizing the simulation. To do so, we present a technique for pruning both hair-hair contact pairs and hair particles. Our method has been used on two full length feature films and has proven to be robust and stable over a wide range of animated motion and on a variety of hair styles, from straight to wavy to curly. It has proven invaluable in providing controllable, stable and efficient simulation allowing our artists to achieve their desired performance even when facing strict scheduling demands.