Page 739 - Kitab3DsMax

Chapter 26: Deforming Surfaces and Using the Mesh Modifiers
FIGURE 26.13
The Edit Normals parameters let you work with normals.

The direction of selected normals can be copied and pasted between normals. The Specify button marks a
normal as a Specified normal. These normals appear cyan in the viewport and ignore any smoothing group
information associated with the vertex. Explicit normals are green in the viewport, which denotes a normal
that has deviated from its regular position. The Make Explicit button can be used to make normals explicit,
thereby removing them from the normal computation task. The Reset button returns a normal to its regular
type and position. At the bottom of the Parameters rollout is an information line that displays which normal
is selected or how many normals are selected.

Normal modifier
The Normal modifier is the precursor to the Edit Normals modifier. It enables object normals to be flipped
or unified. When some objects are imported, their normals can become erratic, producing holes in the
geometry. By unifying and flipping the normals, you can restore an object’s consistency. This modifier
includes only two options: Unify Normals and Flip Normals.

STL Check modifier
The STL Check modifier checks a model in preparation for exporting it to the StereoLithography (STL) for-
mat. STL files require a closed surface: Geometry with holes or gaps can cause problems. Any problems are
reported in the Status area of the Parameters rollout.

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