This simple applet generates a VRML Shape node containing an extrusion resulting from rotating a cross-section around the Z-axis. The number of steps in the rotation can be defined, as can a scale factor applied to the generated coordinates.

Instructions

Use of the applet is straightforward.

• Click in the drawing window to add a point
• Points may be dragged to change the shape
• The last added or selected point is highlighted
• The delete key removes the highlighted point
• Check closed to close the shape. Points may still be added and moved
• Generate produces a Shape block in the output window. This may be edited before cutting/pasting into a VRML source
• Clear clears both drawing and output windows

Known Problems

• Clipping appears to be inconsistent in Navigator 3. If you end up with a poorly clipped shape in the plotting window, jiggle the scrollbars to force a full redraw
• Scrollbar scaling needs looking at
• Running applets in Netscape behind a firewall appears to cause problems (At work I get security errors at different places depending on the host - NT or Solaris. Well, isn't that just Java - write once, debug everywhere :-) ). If you have problems, please contact me with a description of your system and a copy of the Java console output. I'll see what I can do...

Check out my home and VRML pages.