vtPagedStructureLodGrid Class Reference

Inheritance diagram for vtPagedStructureLodGrid:

Public Member Functions
void	RefreshPaging (vtStructureArray3d *pArray)
vtPagedStructureLOD *	FindGroup (vtStructure *str)
Public Member Functions inherited from NodeExtension
void	SetEnabled (bool bOn)
bool	GetEnabled () const
void	SetCastShadow (bool b)
	Set this node to cast a shadow, if it is under a vtShadow node. Default is false.
bool	GetCastShadow ()
	Get whether this node casts a shadow.
void	GetBoundSphere (FSphere &sphere, bool bGlobal=false)
	Get the Bounding Sphere of the node.

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.

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).