Autodesk 00128-051462-9310 - AUTOCAD 2008 COMM UPG FRM 2005 DVD, Руководство пользователя

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Specifying three cut plane levels
Global Cut Planes
The global cut plane cuts all objects in a drawing at the same height. It is defined separately for each of the display
configurations that can be applied to a drawing, so you can have, for example, one cut plane height for a regular Plan
view and another cut plane height for a Reflected view.
The global cut plane is used on all objects that do not have an object-specific cut plane override. For more information,
see “
Object-Specific Cut Planes ” on page 315.
Global Cut Plane Display Range
When you set a global cut plane for a display configuration, you also set a display range above and below the cut plane.
This is the range in which objects, even when they do not intersect the cut plane, are displayed. For example, if you
set the cut plane to 1.4 meters and define the visible range above the cut plane at 2 meters and the visible range below
the cut plane at 1 meter, then your objects are cut at 1.4 meters. Objects that lie between 1.4 meters and 2 meters as
well as objects that lie between 1.4 meters and 1 meter are also displayed, but with different display for above and
below the cut plane. Objects that lie outside the range—for example, a window that is inserted at 0.8 meter—are not
displayed at all.
NOTE The values for the display range are calculated relative to the WCS, not relative to the global cut plane height.
Plan view of window cut planes
You also use a display range to define clipped views, such as the model view of a second floor. In that case, the display
range defines which levels to display and which levels to hide.
310 | Chapter 6 Drawing Management