|This task explains what a light object (also called light part) is and how you should use it. The procedure for creating a light part is explained in this task and in Creating a Part.|
|You should build a part as a light
object in order to save disk space and ensure faster loading of your
When you are adding a connector to a light part you do not need to select geometry, because light parts do not have the kind of geometry needed to add connectors.
|1.||Three types of parts can be created as light objects.
To explain the difference between light and heavy part:
When you place a "heavy" part (refers to a parametric part that is not created as a light object) in your document, you end up creating a separate document for each unique reference. This is not the case when you place a resolved part - the placed part simply points to the catalog and a unique document is not necessary.
The light object approach applies the concept of a resolved part to a unique reference. When you build a part as a light object you do not create the geometry of the part. Instead you build the part, designate it as a light object, as described the section Building Parts, and place it in a catalog. When you place the part in a document this application will automatically create the visualization for it.
You should also note that differing lengths of a placed light object do not result in the creation of a separate document for each placement. As an example, when you first place a 10-inch pipe in a document, a separate document is created for that part. However, when you place a 10-inch pipe again in the same document - whatever the length - a separate document is not created. All instances of a 10-inch pipe will refer to the first document that was created.
You cannot change an existing "heavy" part into a light object. It must be initially created as a light object.
|2.||The procedure for creating a light part is similar to that
of creating a heavy part with one important difference. Since light parts
do not have a graphic to begin with, you need to start by creating a type
for the part.
Object naming rules FOR HVAC DUCTS
If you want to place 'heavy' HVAC ducts then you need to change the file that defines the object naming rules. (You do not need to make any change if you are placing 'light' parts.) If you are placing heavy parts then navigate to the directory ...intel_a\startup\EquipmentAndSystems\HVAC\DataDictionary. The default files are named sch-CATHvaHVACXXXXDuct1.xml where XXXX represents a shape like FlatOval. Rename this file so that the application does not recognize it - you can add a SAVE at the end, for instance. You need to use the corresponding file that has the _HV at the end of the file name. This file is in the same directory, and normally directly beneath the file for light parts. To use this file simply remove the _HV. As an example: