Yotam Gingold (NYU / JST ERATO), Takeo Igarashi (University of Tokyo / JST ERATO), Denis Zorin (NYU) ACM Transactions on Graphics (TOG) 28(5):148:1–148:9. Also in Proceedings of SIGGRAPH Asia 2009. Paper (8M) User study data: figures (1M) | OBJ files (2M) Presentation slides: Keynote '09 (45M) | PDF with notes (6M) | PDF w/o notes (6M) Source code (3M) public domain! OS X application (OSX, 54M) pu