Longay, StevenRunions, AdamBoudon, FrédéricPrusinkiewicz, PrzemyslawKaran Singh and Levent Burak Kara2014-01-282014-01-282012978-3-905674-42-21812-3503https://doi.org/10.2312/SBM/SBM12/107-120TreeSketch is a system for modeling complex trees that look natural yet are creatively designed. The system integrates procedural tree generation with a multi-touch tablet interface that provides detailed control of tree form. The procedural component is based on the concept of tree self-organization and simulates competition of branches for space and light as the tree develops from a seedling. The modeler can control this process by directing growth with a procedural brush, changing parameters as the tree grows, interleaving controlled and autonomous growth, and editing generated forms. Complex trees can be created in a matter of seconds.Categories and Subject Descriptors (according to ACM CCS): Computer Graphics [I.3.5]: Computational Geometry and Object Modeling-Geometric algorithms, languages, and systems; Computer Graphics [I.3.6]: Methodology and Techniques-Interaction techniques; Simulation and Modeling [I.6.8]: Types of Simulation-Visual.