2012

The faceting factor must be greater or equal to 0, where 0 results in the faceting
factor being turned off. The default value is 1. To get twice the number of
facets, double this value. To get half as many facets, halve this value. Larger
faceting factors result in more polygons to a model and larger Autodesk
Navisworks files.
Max Facet Deviation This setting controls the greatest distance between the
edge of a facet and the actual geometry.
If this distance is greater than the Max Facet Deviation value, Autodesk
Navisworks adds more facets.
If the Max Facet Deviation is set to 0, then this function is ignored.
Convert Hidden Items Select this check box to convert hidden entities in
DGN files. They are automatically marked as hidden by Autodesk Navisworks.
When this check box is clear, the file reader ignores hidden items.
Show Hidden Items Select this check box, if you want to display all entities
in converted DGN files, irrespective of whether they are hidden or not.
NOTE To use this option, you must select the Convert Hidden Items check
box.
Convert Lines and Arcs Select this check box to convert lines, splines, curves,
arcs, circles, or ellipses in DGN files.
Merge Lines and Arcs Select this check box if you want to reduce the
complexity of the model in the Selection Tree by interpreting adjoining
lines with the same color, level, and parent as a single item.
Clear this check box if you want to leave these elements as separate items in
Autodesk Navisworks.
Split Lines This option instructs the file reader to ungroup polyline objects.
As a result, line elements are split into separate nodes for each segment of the
line.
Use this option when you need to enhance clash detection analysis. By default,
Clash Detective treats multi-segment entities as a single object, reporting
one clash for each object pair. Ungrouping polyline objects means that each
line segment can be clashed independently from other segments of the line.
As a result, all potential clashes are reported, and not just the first one found.
IMPORTANT In order for this function to work properly, you must clear the Merge
Lines and Arcs check box, as it takes priority over the Split Lines option.
Additionally, you need to set the Model ➤ Performance ➤ Collapse on
Convert drop-down to None, otherwise the polyline objects will be collapsed
into a single geometry node.
794 | Chapter 17 Reference