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NORMALS
NORMALS displays the (average) normal vectors of 3D faces and open polygon meshes.
Block "NORMALS" (arrow) is inserted on layer "NORMALS".
Insertion points are the centers of the faces / meshes.
The color depends on the angle from the current UCS XY plane (positive = green; negative = red).
The length of an arrow is determined by the square root of the area of the face / mesh.
The drawing shows the normal vectors of several 3D faces (left)
and the average normal vector of a polygon mesh (right).
LISP syntax:
(normalsProcess selectionSet)
selectionSet - name of a selection set as returned by (ssget)
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