Bug in the geom3d-package ! intersection(s,p1,p2) fails, if s is parallet to x1_x2_plane
g is obviously parallel to the x1_x2_plane
but s is not the intersection-line:
The sign of the x3-coord has to be changed:
therefore: a new intersection-procedure has to be deﬁned:
Are there any other solutions to this problem ?
It is corrected with Maple 6. (U. Klein)