2013

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You can also convert other types of objects, although the conversion results
may differ from what you expect. These objects include swept surfaces and
solids, legacy polygon and polyface mesh objects, regions, closed polylines,
and objects created with 3DFACE. For these objects, you can often improve
results by adjusting the conversion settings.
Adjust Mesh Conversion Settings
If the conversion does not work as expected, try changing the following system
variables:
FACETERDEVNORMAL
FACETERDEVSURFACE
FACETERGRIDRATIO
FACETERMAXEDGELENGTH
FACETERMAXGRID
FACETERMESHTYPE
FACETERMINUGRID
FACETERMINVGRID
FACETERSMOOTHLEV
For example, if the smooth mesh optimized mesh type (FACETERMESHTYPE
system variable) results in incorrect conversions, you can set the tessellation
shape to be Triangle or Mostly Quads.
You also can control the adherence to the original shape by setting the
maximum distance offset, angles, aspect ratios, and edge lengths for new faces.
The following example shows a 3D solid helix that has been converted to
mesh using different tessellation settings. The optimized mesh version has
been smoothed, but the other two conversions have no smoothness. Notice,
however, that the mostly quads conversion with the lower tessellation values
creates a mesh object that adheres most closely to the original version.
Smoothing this object improves its appearance even more.
398 | Chapter 8 Work with 3D Models