Graphics Programs Reference
In-Depth Information
Type parameters also allow you to create type catalogs for families with
extensive lists of parameter configurations. We will address type catalogs a
little later.
Using Instance Parameters
Instance parameters provide the most flexibility for editing an object. They
are easily accessed via the Properties palette when an object is selected.
Create instance parameters for values that you want to be able to change for
just the selected object. To use the example ofa finish color, if the color is an
instance parameter, then you could have one family type that could vary in
color without having to create a separate family type for each color option.
Another example is the Air Flow parameter for diffusers. You may use the
same diffuser multiple times in your project, but the air flow they supply
from one room to another most likely will vary.
The drawback to instance parameters is that they apply only to the selected
objects. Thus, if you want to change an instance parameter value for all
instances of an object, you will have to select each object and change it
individually. Alternatively, you can select objects by using schedules or by
right-clicking an object and choosing Select All Instances. Make sure you
understand thedifference betweentheoptionsVisibleInViewandInEntire
Project. Figure 6.3 shows the difference between these two options.
 
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