Figure 1: Our method takes a geometric internal skeleton (left) and a source surface mesh (not pictured) as input. Based on a hexahedral lattice (center) it then simulates a deformed surface (right) obeying self-collision and volumetric elasticity. The example shown here has 106,567 cells and simulates at 5.5 seconds per frame. AbstractWe present a new algorithm for near-interactive simulation of skeleton driven, high resolution elasticity models. Our methodology is used for soft tissue deformation in character animation. The algorithm is based on a novel discretization of corotational elasticity over a hexahedral lattice. Within this framework we enforce positive definiteness of the stiffness matrix to allow efficient quasistatics and dynamics. In addition, we present a multigrid method that converges with very high efficiency. Our design targets performance through parallelism using a fully vectorized and branch-free SVD algorithm as well as a stable one-point quadrature scheme. Since body collisions, self collisions and soft-constraints are necessary for real-world examples, we present a simple framework for enforcing them. The whole approach is demonstrated in an end-toend production-level character skinning system.

No abstract

At first glance the low yield of books produced by the Dublin printing presses for circulation in early Stuart Ireland could lead to two hasty conclusions: first, that Irish society was unreceptive towards reading; and second, that the printing presses had to contend with a very small (literate) target audience. Yet nothing could be further from the truth. In recent years Raymond Gillespie has done much to dispel these suppositions. His appraisal of English port books, printing press accounts from the continent and library borrowing lists plainly demonstrates the appetite of an interested reading public in Ireland. The value of analysing book loaning lists was further underlined by William O'Sullivan when he partially revealed the borrowing records belonging to the historian and antiquarian, Sir James Ware. In so doing, he drew attention to the potential of a deeper exploration of Irish cultural and intellectual life.

No abstract

No abstract