Sketch VRML - 3D Modeling of Conception

When an idea hits upon architect's mind suddenly, that idea may be memorized on a piece of paper like as napkin of a restaurant, reverse face of pamphlet etc. For conceptual design, free-form drawing with pencil and paper can efficiently delineate architect's thinking. In environmental design such as urban developing, architects usually describe their initial conception on 2D sketch. Our aim is to construct the Sketch-VRML system mixing non-photo realistic free-form 2D sketch and usual 3D computer graphics for conceptual design applying it to environmental design. It is our principle that we can use CG lightly and naturally like'croquis'with no special hardware needed but just pencil and paper. From free-form 2D sketch on paper, the Sketch-VRML system builds it up to 3D model'as is'resembling free hand drawing and it can be revolved and extruded. 3DCG component already produced will be useful material for design making as well as sketches. Therefore, we would like to use these materials as conception making resource with database