- In Toolspace, on the Prospector tab, expand the surface collection, right-click Masks, and click .
- From the drawing, select an object or multiple objects to define the mask. Press Enter.
- In the Create Mask dialog box, in the properties grid, click the Value column for the Name property and enter a name for the mask.
- Click the Value column for the Description property and enter a description for the mask.
- For Mask Type property, select Inside or Outside.
Note: If you define an inside mask on a surface, you cannot create another inside or outside mask on the same surface.
- Depending on whether or not you want to set a selected object as a render-only mask, select Yes or No for Render Only option.
Note: If multiple objects are selected for the mask, the Render Only option is set to true and is unavailable.
- Optionally, if the polygon object from which you are creating a mask has curves, enter a value in the Mid-Ordinate Distance field or click to digitize a distance in the drawing area.
- Specify the render material by clicking in the Render Material row and clicking .
The Render Material dialog box is displayed. For more information, see To Work With Render Materials.
- Click OK.
The mask is created and added to the surface Masks collection in the Prospector tree.
Note: A render-only mask must be rendered before it is displayed.