Muhammad Mobeen Movania received his PhD degree in Advanced Computer Graphics and Visualization from Nanyang Technological University (NTU), Singapore. He complete his Bachelor of Science Honors (BCS(H)) in Computer Sciences from Iqra University, Karachi. Before joining NTU, he was a junior graphics programmer at Data Communication and Control (DCC) Pvt. Ltd. Karachi, Pakistan. He was working on DirectX and OpenGL API for producing real-time interactive tactical simulators and dynamic integrated training simulators. His research interests include volumetric rendering, GPU technologies, real-time shadows, digital geometry processing, and hierarchical geometric data structures. He is also the author of an OpenCloth project (http://code.google.com/p/opencloth ) which implements various cloth simulation algorithms in OpenGL. His blog (http://mmmovania.blogspot.com) lists a lot of useful graphics tips and tricks. When not involved with computer graphics, he composes music and is an avid squash player. He is currently working at a research institute in Singapore.