| 1 |
level field contains Shape nodes and other grouping nodes. Here Inline node is a good tool to use. The first child provides the highest-detail version of the shape, and subsequent children provide lower-detail version, and so on.
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| 2 |
center field specifies the 3-D coordinate in the coordinate for the shape built within the LOD node.
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| 3 |
range field specifies a list of viewer-to-the center of shape distances at which the browser should switch from one level of detail to another.
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If there are n versions of detailed representation of a shape in the level field, there must be (n-1) range values. Range values must be positive and in increasing order.
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