- 1) ...videotape
- The videotape can be obtained upon
request from the authors.
- 2) ...mouse
think that a tablet/pen and an active LCD screen implementation might be
even better. See Section 6.
- 3) ...plane
- A plane perpendicular to the view direction and
close enough to the eyepoint not to interfere with the objects in the
- 4) ...1).
- If the ray intersects no
surface (possible because we use a finite ground rectangle instead of an
infinite ground plane), the object is placed in the plane perpendicular
to the view direction that passes through the origin; this turns out in
practice to be a reasonable compromise.
- 5) ...key.
- Recall from Table 1 that Shift-modified strokes
normally produce lines drawn on the surface of objects without special
- 6) ...2).
- The lasso gesture is similar to the sphere gesture. We
differentiate between them by requiring that the sphere gesture be
followed by a dot stroke, whereas the lasso is simply a free-hand closed
curve stroke followed by a manipulation gesture.