DEVELOPMENT OF 3D SOLID MODELER FOR DESCRIPTIVE GEOMETRY EDUCATION

Abstract

An 3D solid modeling software has been developed for the education of the descriptive geometry and computer graphics. The boundary representation and the winged-edges method have been adopted as a description method of solid model. The developed solid modeler can create a 3D solid model by executing the command lines of text format. Combining the 13 kinds of primitive models, the solid model is constructed. The developed software has several kinds of display modes more than 140, such as the edge-type, the surface-type, the perspective and parallel views, three faces and so on. The practice of descriptive geometry with the software had been carried out in Tokyo Denki Univ. The students were interested in the geometry and their geometric ability was improved.