proland::TileSamplerZ::TreeZ Class Reference

An internal quadtree to store the texture tile associated with each terrain quad, and to keep track of tiles that need to be read back. More...

Inheritance diagram for proland::TileSamplerZ::TreeZ:

List of all members.

Public Member Functions
	TreeZ (Tree *parent, ptr< TerrainQuad > q)
	Creates a new TreeZ.
virtual void	recursiveDelete (TileSampler *owner)
	Deletes this Tree and all its subelements.
Public Attributes
ptr< TerrainQuad >	q
	The TerrainQuad whose zmin and zmax values must be updated.
bool	readback
	True if the elevation values of this tile have been read back.
unsigned int	readbackDate
	Completion date of the elevation tile data at the time of the last read back.

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Detailed Description

An internal quadtree to store the texture tile associated with each terrain quad, and to keep track of tiles that need to be read back.

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Constructor & Destructor Documentation

proland::TileSamplerZ::TreeZ::TreeZ	(	Tree *	parent,
		ptr< TerrainQuad >	q
	)

Creates a new TreeZ.

Parameters:

q

a terrain quad.

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Member Function Documentation

virtual void proland::TileSamplerZ::TreeZ::recursiveDelete

(

TileSampler *

owner

)

[virtual]

Deletes this Tree and all its subelements.

Releases all the corresponding texture tiles t.

Reimplemented from proland::TileSampler::Tree.

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Member Data Documentation

ptr<TerrainQuad> proland::TileSamplerZ::TreeZ::q

The TerrainQuad whose zmin and zmax values must be updated.

bool proland::TileSamplerZ::TreeZ::readback

True if the elevation values of this tile have been read back.

unsigned int proland::TileSamplerZ::TreeZ::readbackDate

Completion date of the elevation tile data at the time of the last read back.

This is used to trigger a new read back if the elevation data changes.