2012

3 Click the Select tab.
There are two identical panes in this tab called Left and Right. These
panes contain a Tree View of two sets of items that will be tested against
each other during the clash test, and you need to select items in each.
You can select the items by choosing a tab from the selection tree and
manually selecting items from the tree hierarchies. Any selection sets in
the scene are also included on a tab, which is a quick and useful method
of setting up items across sessions (see
Interactive Geometry Selection
(page 337)).
You can also transfer the current selection to one of the boxes by selecting
items in the usual way in the Scene View or Selection Tree and
clicking the appropriate Select Current button.
4 Optional: Select the appropriate Self Intersect check box to test the
corresponding set for self-intersection, as well as intersection against the
other set.
5 Optional: You can include the clashing of points, or lines, or surfaces in
your test. Underneath each window there are three buttons that
correspond to surfaces, lines and points. To toggle a button, click it.
So, for example, if you want to run a clash test between some surface
geometry and a point cloud, you can set up the geometry in the Left
pane, and click the Point Cloud
button under the Right pane. The
Surface
button under the Left pane is toggled on by default.
Additionally, you could set the clash Type to Clearance with a
Tolerance of 1 meter.
NOTE If the Type is set to Hard, lines and surfaces will actually need to
intersect with any points to register a clash.
Select Clash Test Options
There are four default clash test types for you to choose from:
■ Hard. Choose this option if you want the clash test to detect actual
intersections between geometry.
■ Hard (Conservative). This option performs the same clash test as Hard,
however, it additionally applies a conservative
intersection method (page
838).
NOTE This clash test type is only available when in Developer profile. See
Profiles (page 158) for more information.
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