Maria3D::QuadTile Class Reference

#include <M3DQuadTile.h>

Public Member Functions
	QuadTile (const QuadCoo &quad_coo)
	QuadTile (QuadTile *parent, int child_dir)
const QuadTile *	getParent () const
	Return the parent of this quad tile.
QuadTile *	parent ()
const QuadTile *	getChild (int i) const
	Return the child tile with index i.
QuadTile *	child (int i)
	Return the child tile with index i.
int	getTreeLevel () const
int	getChildDir () const
const STK::Vector3d &	getOrigin () const
bool	calcBounds ()
double	getMaxAngularRadius () const
const QuadCoo &	getQuadCoo () const
	Get the quadtree coordinate set.
double	getMinLatitude () const
	Get minimum latitude (in degrees) of the tile.
double	getMinLongitude () const
	Get minimum longitude (in degrees) of the tile.
double	getMaxLatitude () const
	Get maximum latitude (in degrees) of the tile.
double	getMaxLongitude () const
	Get maximum longitude (in degrees) of the tile.
bool	isInside (double lat, double lon) const
	Returns true if the given latitude and longitude is inside the tile.
const std::shared_ptr< GeometryData > &	getGeometryData () const
void	setGeometryData (const std::shared_ptr< GeometryData > &data)
const std::shared_ptr< MapTextureData > &	getTextureData () const
void	setTextureData (const std::shared_ptr< MapTextureData > &texture_data)
const std::shared_ptr< TextureData > &	getNormalMapData () const
void	setNormalMapData (const std::shared_ptr< TextureData > &normal_map_data)
Maria::TileId	getQuadId () const
QuadTile *	findChildXY (Maria::WebMercator::IntCoord x, Maria::WebMercator::IntCoord y)
QuadTile *	findTileXY (Maria::WebMercator::IntCoord x, Maria::WebMercator::IntCoord y, int level)
QuadTile *	findTileLatLon (double lat, double lon, int level)
void	split ()
void	calcTextureTransform (const QuadTile *tex_tile, STK::Vector4f &xfm)
double	calcElevationXY (Maria::WebMercator::IntCoord x, Maria::WebMercator::IntCoord y) const
const STK::Vector3d &	getCenter () const
double	getRadius () const
void	clearChildren ()
	Delete all child tiles.

Protected Attributes
QuadTile *	children_ [4]
QuadTile *	parent_
unsigned short	child_dir_
QuadCoo	quad_coo_
std::shared_ptr< GeometryData >	geometry_data_
std::shared_ptr< MapTextureData >	texture_data_
std::shared_ptr< TextureData >	normal_map_data_
STK::Vector3d	origin_
	Local geocentric origin. Vertex data are relative to this.
STK::Vector3d	_center
	Global geocentric center point.
double	_radius
	Bounding sphere radius.

Detailed Description

SngQuadTile - Short description. Detailed description.

See also

Class1

Constructor & Destructor Documentation

QuadTile() [1/2]

QuadTile::QuadTile

(

const QuadCoo &

quad_coo

)

Root tile constructor. This constructor is used to create one of the six root tiles. It must be initialized with the correct integer coordinate limits and quad tile ID.

QuadTile() [2/2]

QuadTile::QuadTile	(	QuadTile *	parent,
		int	child_dir
	)

Child tile constructor. Construct a child tile in the quadtree. The tile will be inserted into the parent's child array at the index given by child_dir.

Member Function Documentation

calcBounds()

bool QuadTile::calcBounds

(

)

Calculate bounding sphere from parent data.

calcElevationXY()

double QuadTile::calcElevationXY	(	Maria::WebMercator::IntCoord	x,
		Maria::WebMercator::IntCoord	y
	)		const

Calculate elevation for a given X,Y coordinate.

calcTextureTransform()

void QuadTile::calcTextureTransform	(	const QuadTile *	tex_tile,
		STK::Vector4f &	xfm
	)

Calculate a transformation the given texture tile. This method calculates the scale and translation factors for applying the texture from the given tile to this tile when rendering. The texture tile must be on a lower or equal level to this tile. The transform is stored in the 4-vector xfm as follows:

• X = translate in X-direction.
• Y = translate in Y-direction.
• Z = scale in X-direction.
• W = scale in Y-direction.

findTileLatLon()

QuadTile * Maria3D::QuadTile::findTileLatLon ( double  lat, double  lon, int  level  )

inline

Find a tile at a given lat, lon position and a specific level.

findTileXY()

QuadTile * QuadTile::findTileXY	(	Maria::WebMercator::IntCoord	x,
		Maria::WebMercator::IntCoord	y,
		int	level
	)

Find a tile at a given x, y position and a specific level.

getCenter()

const STK::Vector3d & Maria3D::QuadTile::getCenter ( ) const

inline

Get geocentric center coordinate, based on actual vertex data. This method requires that calcBounds() has been called, and that the parent vertex data have been loaded.

getChildDir()

int Maria3D::QuadTile::getChildDir ( ) const

inline

Return child direction of this tile. Returns the index in the parent's child array for this tile. The index is in the range 0 .. 3 according to the Sng::ChildDir enum.

getOrigin()

const STK::Vector3d & Maria3D::QuadTile::getOrigin ( ) const

inline

Return the tile origin. The tile origin is given in geocentrical XYZ-coordinates (meters).

getQuadId()

Maria::TileId Maria3D::QuadTile::getQuadId ( ) const

inline

Get unique id for this tile. The Quad tile ID is a 64-bits integer that is globally unique for this tile.

getRadius()

double Maria3D::QuadTile::getRadius ( ) const

inline

Get bounding radius, based on actual vertex data. This method requires that calcBounds() has been called, and that the parent vertex data have been loaded.

getTreeLevel()

int Maria3D::QuadTile::getTreeLevel ( ) const

inline

Return quadtree level. The quadtree level increases with depth, so that level 0 is the root.

split()

void Maria3D::QuadTile::split ( )

inline

Split the tile in four. This method will create the four child tiles for this quad tile if they are not already created. No data loading is performed at this point, only quadtree structure.

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The documentation for this class was generated from the following files:

• Native/MariaNative/M3DGlobe/M3DQuadTile.h
• Native/MariaNative/M3DGlobe/M3DQuadTile.cpp