Introduction

The Tv Tool provides a common framework for interactive graphics for use during algorithm development and demonstration. It is used to display image 2D and 3D graphics data. The software has been designed to support straight forward extension and modification by the user programmer. By isolating system dependant graphics code, and providing a protective layer of graphics routines, it is hoped that this software will support portability and upward extendability.

All graphics display in Tina is done via the Tv Tool, each application tool that has graphics display in the Tina system has associated Tv Tool's. The Tv Tool is resizeable, either by dragging at the corners of the tool or via use of the "Size" menu. 3D graphics can be displayed either with orthographic or perspective projection as required ("Proj" menu). Data can also be inverted by a 180 degree rotation in either 2D or 3D. During data manipulation (eg rotation) only a subset or "skeleton" of the entire data structure may be displayed. This is purely for convenience and the entire data set will be fully displayed at the end of the interaction.