OSG NodeMask

General

Nodemaks can be seen as classification-tags in OpenSceneGraph. Every Node in a file has a Nodemask. Usually this is the default mask, specified in the OSG Exporter-options dialog, but special ones can be used as well, using the Nodemask Helper.

Possible uses:

• You can use the Helper to specifically designate parts of your scene as blocked, using a Collision Mask
• Or explicitly let an object be walked through (using a no-collision mask).

To create a Nodemask Helper in 3d Studio Max

• Create some geometry;
• Add an OSG Nodemask Helper object to your scene;
• Using the 'Add' of 'Add multiple'-butons add the geometry to the Helper;
• Specify the type of Mask you want to assign;
• Export using the OSG Exporter.

The options for the NodeMask Helper

Other options

1. NodeMask Value: This allows you to specify the type of Nodemask.
   • Terrain: makes this geometry part of the terrain (it can be walked upon);
   • Collision: make the object impenetrable;
   • No Collission: makes the object penetrable; *Custom mask: allows you to create special categories. Only usable if your viewer support this functionality;
2. NodeMask Geometry: Add of remove pieces of geometry from this Nodemask Helper.

More information

• OSG Exporter HOWTO