2008

Icon Size Determines the size of the helper in the scene.
LOD VRML97 Helper
Create panel > Helpers > VRML97 > Object Type rollout > LOD
The Level of Detail (LOD) helper lets you specify objects with varying face
counts that are appropriate for different viewing distances. Browsers display
the less detailed objects when the viewer is far away from them and substitute
the more detailed objects at closer ranges.
Use LOD objects to speed up rendering of scenes in which highly detailed
objects are often far away from the viewer.
Objects used for LOD do not have to be of the same type or size, so you can
accomplish a crude form of morphing by using different objects as the LOD
components. For example, a tree might seem to grow if taller trees with more
limbs are substituted as the viewer gets closer.
Procedures
To create a Level of Detail helper object:
1 Create the objects to which you want to add level of detail.
2 Click the LOD button.
3 Click and drag in the scene to create a helper object.
4 Add the objects to the list with Pick Objects.
5 Use the Hide and Unhide commands, or the H key, to help pick the
objects and add them to the LOD list.
6 Select the objects in the list and use the Distance spinner to set the
distance.
To create all the objects and the LOD helper object at exactly the same
coordinates:
1 Create the LOD helper object.
2 You can use Snap and create the helper object at the origin (0,0,0
coordinates), or use the Keyboard Entry rollout for a Standard Primitive
to specify an exact object origin.
VRML Files | 7103