 PROJ                                                               Menu: PEDIT
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 Projects or projects and copies a polygon onto a plane.

         1.   (Y/N) option: y-project, n-project & copy <y>
         2.   (CHAR) projection axis (x,y, or z)
         3.   (POINT) first point of plane
         4.   (POINT) second point of plane (<ENTER> for a NEW first pt.)
         5.   (POINT) third point of plane (<ENTER> for a NEW second pt.)
      if option `y' is selected:
         6. * (IND) polygon to project
      if option `n' is selected:
         6. * (IND) polygon to project & copy
         7. * (Y/N) confirm choice
         8. * (Y/N) keep the result ?

 Description:
 This command projects, or projects and copies a polygon onto a specified
 plane. The projection is in a direction parallel to the x, y, or z axis. If
 you decide to project only, the original polygon will be projected to its new
 position.
 Select whether you want to project only, or project and copy.
 Enter the axis of projection (x, y, or z). Pick three points to define the
 plane onto which the polygon is to be projected. Indicate and confirm the
 polygon to be projected, or projected and copied.
 If the projected polygon is part of a simple solid, the resulting solid is
 modified accordingly, but will only be updated on the screen after a redraw.
 2D polygons containing arcs will be projected, while each of the arcs will be
 changed to seven line segments. The command may not be executed on a polygon
 of a simple (prism) solid that includes an arc.
 Once the change has been executed on screen, you are asked if you wish to keep
 the result. If you reply `n', the operation is undone.
 You are prompted for additional polygons to project until you enter a new
 command.
 NOTE:
 Polygons which are part of a complex solid are projected and copied, not
 projected only. 2D multi-layer walls and openings cannot be projected.
 Polygons which are part of multi-layer walls, openings, or axial walls are
 projected along the Z axis only, but copied along all axes.

         Example: \proj y z 0 0 0 1 0 1 1 1 1 (indicate) y

 Result: The indicated polygon is projected in the z axis direction onto
 a plane defined by the three points 000, 101, and 111.
