Work with Bifröst Kill Volume and Clipping input meshes

You can use a polygon object as an input mesh for setting boundaries around areas of a Bifröst simulation. Use input meshes to:

• Restrict Bifröst emission to the bounding box region of the polygon object. See Bifrost Kill Volume attributes.
• Preview a slice of a bifrostShape or Bifröst mesh for close analysis. See bifrostShape attributes.
• Isolate an area of interest for Tile View. See Visualize Bifröst vowel resolutions using Tile View.

Add a Kill Volume or Clipping mesh

1. Display the appropriate tab in the Attribute Editor:
   • The main properties to use a Kill Volume to restrict emission.
   • The shape to clip the display, mesh, or Tile View.
2. In the Attribute Editor menu, select List, and then turn off Auto Load Selected Attributes.
   This turns off Maya's default behavior of loading attributes for selected objects. The current attributes will now remain loaded in the Attribute Editor when you select and position the polygon object.

   Note: Alternatively, you can select Copy Tab at the bottom of the Attribute Editor to create a copy of the Bifröst object's attributes in a floating window.
3. Select and position the polygon object.
4. In the Kill Volume or Clipping attribute group, click Use Selected.
   Tip: After adding the input mesh, you can turn off the mesh's shading so it does not block your view of the simulation. To do this, in the polygon object's shape node, expand the Display attribute group, turn on Enable Drawing Overrides, and then turn off Shading.
5. (Optional) Turn on Auto Load Selected Attributes to return Maya to the default behavior.

Remove a Kill Volume or Clipping mesh

1. Display the appropriate tab in the Attribute Editor.
2. In the Attribute Editor menu, select List and then turn off Auto Load Selected Attributes.
3. Press Alt + D to deselect all objects, and then in the Kill Volume or Clipping attribute group of the Bifröst object's Attribute Editor, click Use Selected.
4. (Optional) Turn on Auto Load Selected Attributes to return Maya to the default behavior.