vtPagedStructureLodGrid Class Reference

Inheritance diagram for vtPagedStructureLodGrid:

List of all members.

Public Member Functions
void	RefreshPaging (vtStructureArray3d *pArray)
vtPagedStructureLOD *	FindGroup (vtStructure *str)

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Detailed Description

vtPagedStructureLodGrid provides a more complex implementation of vtLodGrid.

Like vtSimpleLodGrid, it consists of a 2D grid of LOD nodes, each covering a rectangular cell, which causes that cell's children to only be shown when within a given distance. Additionally, the cells can contain structures (vtStructure) which are not constructed until the cell is visible.

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Member Function Documentation

vtPagedStructureLOD * vtPagedStructureLodGrid::FindGroup

(

vtStructure *

str

)

For a given vtStructure, find the lod group parent for it, using the structure's earth extents.

void vtPagedStructureLodGrid::RefreshPaging

(

vtStructureArray3d *

pArray

)

In case the paging grid did not load some structure before (because the structures were hidden), tell it to check again. You should call this when a structure layer becomes enabled (un-hidden).