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Proceeding of ACM UIST 2014
Paper3D: Bringing Casual 3D Modeling to a Multi-Touch Interface
  Patrick Paczkowski Julie Dorsey Holly Rushmeier Min H. Kim  
    Yale University   KAIST  
  An overview of our novel 3D modeling technique, designed for a multi-touch interface to create 3D models on a tablet device. (a) Users fold 2D sheets of paper in the modeling mode, using gesture-based modeling tools such as folding, bending, extending, and cutting. (b) A set of modeled 3D components is assembled together through pinning and taping, resulting in (c) a complex 3D scene.  
  A 3D modeling system that provides all-inclusive functionality is generally too demanding for a casual 3D modeler to learn. In recent years, there has been a shift towards developing more approachable systems, with easy-to-learn, intuitive interfaces. However, most modeling systems still employ mouse and keyboard interfaces, despite the ubiquity of tablet devices, and the benefits of multi-touch interfaces applied to 3D modeling. In this paper, we introduce an alternative 3D modeling paradigm for creating developable surfaces, inspired by traditional papercrafting, and implemented as a system designed from the start for a multi-touch tablet. We demonstrate the process of assembling complex 3D scenes from a collection of simpler models, in turn shaped through operations applied to sheets of virtual paper. The modeling and assembling operations mimic familiar, real-world operations performed on paper, allowing users to quickly learn our system with very little guidance. We outline key design decisions made throughout the development process, based on feedback obtained through collaboration with target users. Finally, we include a range of models created in our system.
@ InProceedings{Patrick:UIST:2014,
  author  = {Patrick Paczkowski and Julie Dorsey and Holly Rushmeier
            and Min H. Kim},
  title   = {Paper3D: Bringing Casual 3D Modeling to a Multi-Touch
  booktitle = {Proc. ACM User Interface Software and Technology
            Symposium (UIST 2014)},
  year = {2014},
  pages = {23--32},
  address = {Honolulu, USA},
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