Graphics Programs Reference
In-Depth Information
give you the ability to move the annotation symbol to the right or left of the
device. Youcanlocktheannotation symboltoanother reference planethat's
parallel to the offset plane.
A dimension between the two planes can be associated with an instance
parameter that defines the offset distance, as shown in Figure 21.11 . The
annotation family is aligned and locked to the reference plane so that it
moves when the dimension is edited. The Is Reference parameter for both
the reference plane and reference line should be set to Not A Reference.
Figure 21.11 Reference plane used for annotation symbol offset
You can also use a reference line instead of a reference plane to lock the
symbolinplace.Enablinggripsinfamiliesallowsyoutomodifydimensional
parameters without entering values in the properties of the dimensional
parameters. Grips can be handy when you don't know, or care, what the
exact dimension is; instead, you can pull a grip handle and see your family
stretch to fit a certain space. To enable grips, two things need to happen:
First, the Is Reference parameter for the reference plane (or reference line if
you used that) needs to be set to anything but Not A Reference. And second,
the dimensional parameter to that reference plane has to be an instance.
When those two conditions are true, your family will display grips in the
project environment. Keep in mind that, in many cases, youmay want a grip
only on one end of the dimensional parameter. In those cases, you can set
theIsReferenceparametertoNotAReferenceforthereferenceplanewhere
you don't want a grip.
A default value can be used for the offset distance to allow for the normal
display of the annotation. This value depends on the location of the
reference plane used to define the offset. Using this type of parametric
 
 
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