The Normal modifier
allows you to unify or flip the normals of an object without applying
an Edit Mesh modifier.
For example, if you wanted
to fly inside of a procedural object, such as a sphere or a cylinder,
and wanted to retain control over the radius and number of segments,
you couldn't collapse the object to an Editable Mesh and maintain
the procedural nature of the primitive.
Flipping the normals
of a sphere creates a sky dome over a city.
TipIf you are animating
the creation of a complex object such as a nested Boolean or a loft,
and you think the operation might result in inconsistent faces,
apply Normal to the result and turn on Unify.
TipThe Lathe modifier
sometimes creates an object with normals pointing inward. Use the
Normal modifier with both Unify and Flip turned on to fix "inside-out"
lathe objects. The Normal modifier allows whole-object manipulations
of normals to be performed quickly without using an Edit Mesh modifier.
Patch objects coming
up the modifier stack are not converted to a mesh by this modifier.
A patch object input to the Material modifier retains its patch
definition. Files that contain patch objects with the Material modifier
from previous versions of 3ds Max Design will be converted to meshes
to maintain backward compatibility.
To use the normal modifier:
- Select an object, then on
List, choose Object-Space Modifiers Normal.
The object appears to
turn inside-out, since Flip Normals is on by default.
- If the object has some faces pointing
inward and others outward, turn on Unify Normals to make all the
faces point similarly.
Tip To flip or unify normals on portions of
objects, convert to Editable Mesh and select Faces or Polygons.
On the Surface Properties rollout in the Normals group, use the
Flip and Unify buttons.
- Unify Normals
Unifies the normals of
an object by flipping the normals so that they all point in the
same direction, usually outward. This is useful for restoring an
object's faces to their original orientations. Sometimes normals of
scenes that have come into 3ds Max Design as part of a DWG or DXF file
are irregular, depending on the methods used to create the scene.
Use this option of the modifier to correct them.
Unify Normals does
not work on
before applying the Normal modifier, convert the model to editable
mesh format or apply a
- Flip Normals
Reverses the direction
of all the surface normals of the faces of the selected object or