### net

Set the projection net used to represent a crystallographic plane.

In the **wulff** projection, the point to project (above)
and the point of the sphere farther from the user (below) define a segment
that intersects the circle at a point, giving the final representation.

In the **schmidt** projection, the point to project (above) is
rotated around the point of the sphere closer to the user (above),
keeping the same XY direction, until both points have the same Z
coordinate, and then divided by square root of 2, to be inside the
circle with radius R at coordinate Z, giving the final representation.

Example: **<plane ... net="wulff"/>** (default)
Allowed values: **wulff**, **schmidt** (optional)