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HFSS15: Drawing a Region
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To draw a region encompassing the objects in the current project:
1. Click Draw>Region or click the 
icon on the tool bar.
This displays the Region dialog. You can define the region padding as a percentage offset, relative offset, or absolute offset.
2. For the Padding data, click the Padding Data radio button as Pad all directions similarly or Pad individual directions.
Selecting Pad all directions similarly leaves the Padding Percentage field as requiring a single value that affects all directions. In this case, you can specify the Padding type by selecting Percentage Offset or Absolute Offset from the drop down menu.
Selecting Pad individual directions displays the Padding Percentage as a table of Positive and Negative X,Y, and Z coordinates, permitting you to specify padding for each direction. In this case, you can specify the Padding type by selecting Percentage Offset or Absolute Offset or Absolute Position from the drop down menu.
3. Specify the Padding values in the fields and select the units from the dropdown list.
4. If desired, click the check box to save the values as Default.
5. Click OK to close the dialog and create the region.
The region is drawn, selected, and displayed in the History tree. It is created using the current coordinate system. The Properties dialog for the region has a Commands tab that shows the coordinate system and Padding values, and the Attributes tab includes properties for Name, Material (Default, vacuum), Solve inside, Orientation, Model, Color, Display Wireframe, and Transparency. You can edit all of these values.
If you try to create a region that does not contain all of the objects in your model, the modeler automatically expands the region to cover all objects. The region also updates automatically as your geometry changes.
Only one region can be created for a single project using the Draw>Region command. If you try to create a second region, the Properties window appears for the existing region, allowing you to change operation parameters and attributes.
