graffiti1
Draw lines on geomview objects
Overview
Graffiti is a geomview module which allows you to draw polygonal lines on objects in the geomview window. The Graffiti panel has buttons labeled "Draw", "Undo", "Vertices Only", and "Quit". To start drawing, press the Draw button. While the Draw button is down, you may interactively draw a polygonal line with vertices on objects in the geomview window; clicking the right mouse button on any object in the geomview window will cause a vertex to be added to the line. Throughout the drawing process, the initial point (the "tail") of the line is shown in a small box, and the last point (the "head") is shown in a small pyramid. If you click the right mouse button on the line's tail (the small box), graffiti closes up the line segment. To end the line segment without closing it up, just press the Draw button in the graffiti window again.
Pressing the Undo button in the graffiti window while drawing a line will undo the line's last vertex.
The Vertices Only button, when on, causes graffiti to only recognize vertices in geomview objects. Use this button to force your line's vertices to coincide with those of existing geomview objects.
The Quit button exits graffiti.