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  • The Concept of Tool-Based Direct Deformation Method for Networked Cooperative CAD Interface

    Juli YAMASHITA  Hiroshi YOKOI  Yukio FUKUI  Makoto SHIMOJO  

     
    PAPER

      Vol:
    E77-D No:12
      Page(s):
    1350-1354

    This paper proposes the concept of Tool-Based Direct Deformation Method (TB-DDM) which supports networked CAD (Computer Aided Design) systems with virtual reality technologies. TB-DDM allows designers to sculpt free forms directly with tools; each tool has its deforming characteristics, such as, the area and the shape of deformation. TB-DDM's direct deformation interface is independent of form representations because the system automatically calculates appropriate deformation according to its form representation when a tool pushes" a form. The deformation with TB-DDM is concisely described by the initial shape, types of tools, and thier loci; the description enables cooperative CAD systems with narrow bandwidth network to share design process rapidly and to distribute computational load.