Introducing the Drawing Object

A Graphics Object Extension for Interactive Geometry and Parametric Drawing

Nicolas Venuti
Virtual Dynamics

Abstract

The Drawing package introduces new interactivity support for Graphics objects. The package allows to create easily planar geometric graphics, as soon as it is based on ruler and compasses, such as geometric proof and make them instantly alive and interactive. The Drawing object remains compatible with the standard Graphics object and extend it with new graphic primitives. It adds the possibility to define constraints, referentials, and object tags. Tagging allows to refer symbolically to graphics object and define them as layers or use them as a constraint for other objects. Constraints in graphics allows to build parametrically dependent graphics or kinematic linkage.  Objects are exportable to a Manipulate in order to create any technical drawing explorer or GeoGebra-like demonstrations. The talk will illustrate the use of this new tool with industrial and academic examples.