Autodesk 00128-051462-9310 - AUTOCAD 2008 COMM UPG FRM 2005 DVD, User Manual

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NOTE ”Annotation Scale” in AutoCAD Architecture 2008 replaces “Drawing Scale” in Autodesk Architectural Desktop 2007
and earlier versions.
Annotation Scales and Viewports
When working in a paper space viewport, the annotation scale of the viewport controls the scale of the annotative
objects created in the viewport. If multiple scale representations are supported, the annotative objects in the viewport
are drawn and scaled based on the annotation scale without affecting the scale or display in the model tab or in other
paper space viewports.
The viewport and annotation scales are synchronized when the annotation scaling controls are used. For example,
when you change the viewport scale, the annotation scale updates to match the new viewport scale. However, as you
zoom in or out of a viewport with your mouse wheel or by using the Zoom commands, the viewport scale updates
while the annotation scale will remain unchanged.
Scale representations allow for the display of the same annotative object differently in different paper space viewports
at the same time. Scale representations allow annotative objects to be drawn at different sizes based on the annotation
scale. Each scale representation may also have different values for positional properties, such as a text string base point.
The properties that can vary per scale representation depend on the object type.
The following illustration shows a door tag shown at two different annotation scales and different locations based on
the annotation scale and base point.
Whenever an annotation object is identified as annotative as you add it to a drawing, the current annotation scale is
added to the object as a participatory scale. AutoCAD Architecture objects identified as annotative will scale to match
the current annotation scale. The scale point is the insertion point of the block definition.
NOTE Any annotation settings within all nested text or dimension styles referred to by an AutoCAD Architecture object, such
as materials or component hatching, schedule tables, or stairs, will be ignored. Display properties for these objects do not
respect annotation scaling.
Annotative objects such as door tags now have a Scale Representation Location Grip. Use this grip to relocate the current
scale representation instance. Use the Location grip to relocate all of the scale representations at once. If there is only
one scale representation supported for a particular tag, only the Location grip is displayed.
The model space or paper space text height is the height at which text will be plotted for a given scale. The following
formula determines object scaling:
Object Height x Annotation Scale x Annotation Plot Size = Model Space or Paper Space Height
For example, the model space text height for a text string when displayed in a viewport scaled to 1/4" = 1' - 0" is 12".
Assuming an object height of 1 unit, the formula applies as follows:
1 x 48 x 1/4” = 12”
Blocks used by AutoCAD Architecture callouts, title marks, and other kinds of annotation must be created relative to
a single AutoCAD unit (either an inch or a millimeter, depending upon whether your working in imperial or metric
units). Documentation content files, regardless of whether they are based on blocks or multi-view blocks have the
additional requirement that they be inserted at a scale relative to your anticipated plot scale, and taking into account
the “Annotation Plot Size” setting in the drawing setup dialog box. As a baseline, you can use one AutoCAD unit, and
anything in the content file that is one unit in size will be the annotation plot size when plotted at the specified
1986 | Chapter 44 Annotation and Keynoting Tools