Let There Be Light! Knowledge-Based 3-D Sketching Design Tools Journal Article uri icon



  • This paper presents a framework for 3D knowledge-based sketching tools for lighting design and two software prototypes built to illustrate sketch-based interaction with intelligent systems in 3-D domains. Spot supports direct sunlight simulation and visualization in a selected time period and Light Pen supports placement of electric lighting designs to light an intended area in space. In both examples, a 3-D sketching front-end is coupled with a back-end knowledge-based system. This enables a designer to pose a problem by drawing onto a 3-D model to which the knowledge-based system offers a solution – in one case by providing quantitative data analysis; in the other by modifying the 3-D model. Spot and Light Pen's specific domain of architectural lighting design exemplifies a more general class of 3-D interaction with intelligent systems.

publication date

  • June 1, 2004

has restriction

  • closed

Date in CU Experts

  • December 19, 2014 11:02 AM

Full Author List

  • Do EY-L; Gross MD

author count

  • 2

Other Profiles

International Standard Serial Number (ISSN)

  • 1478-0771

Electronic International Standard Serial Number (EISSN)

  • 2048-3988

Additional Document Info

start page

  • 211

end page

  • 227


  • 2


  • 2