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2D elevation with building roof, wall, and foundation surface hatching
Hidden Component
The Hidden component contains all linework that is hidden in the 2D
projection because other components are in front of it. By default, this
component is turned off. You can use design rules to achieve special effects,
such as a see-through effect, using the Hidden component. The Hidden
component is specific to 2D elevations.
The Hidden component cannot be defined by a material component. You can
only set it in the display properties of the 2D elevation. For information on
setting the display properties of a 2D elevation, see Changing the Layer, Color,
and Linetype of a 2D Elevation Style on page 3345.
Erased Component
The Erased component contains linework in the elevation object that you do
not want to see. For example, if you have an elevation of a window front with
three windows, but you want to display only one (for a higher level of
abstraction), edit the linework of the elevation and assign the linework of the
remaining two windows to the Erased component. Because the Erased
component is turned off by default, the two windows do not display. For
information on linework editing of an elevation, see Creating a Hidden Line
Projection on page 3347.
The hidden component is specific to 2D elevations, and cannot be defined
by a material component.
Subdivision Components
The subdivision components partition an elevation object. They are useful to
create perspective effects, where parts closer to the viewer are drawn with
darker, stronger lines and parts farther from the user are drawn with lighter,
About 2D and 3D Elevation Display Components and Materials | 3339
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