#include <HeightSource.h>

Inheritance diagram for ProceduralHeightSource:

Collaboration diagram for ProceduralHeightSource:

Public Member Functions
int	requestPatchHeights (const TileMath::TileKey &key, int gridSize) final
	Request the vertex height grid for a patch. Returns a request id (> 0).

void	cancelRequest (int requestId) final
	Cancel a pending request. No signal is emitted for a cancelled request.

bool	requestTile (const TileMath::TileKey &key) override

	HeightSource (QObject *parent=nullptr)

Public Member Functions inherited from HeightSource
	HeightSource (QObject *parent=nullptr)

void	setHeightField (HeightField *field)
	Field that receives whole tiles requested via requestTile (not owned)

Static Public Attributes
static constexpr int	kSynthGridSize = 33
	samples per edge of a synthesized tile

Protected Member Functions
virtual float	heightAtWorld (const QPointF &world) const =0
	Height in meters at a world-space ground position.

Protected Member Functions inherited from HeightSource
int	_nextRequestId ()

Additional Inherited Members
Signals inherited from HeightSource
void	patchHeightsReady (int requestId, const QList< float > &heights)
	heights has (gridSize+1)^2 entries, row-major from the north-west corner

void	patchHeightsFailed (int requestId)

Protected Attributes inherited from HeightSource
HeightField *	_heightField = nullptr
	tile delivery target for requestTile (not owned)

Detailed Description

Height source used by synchronous procedural implementations: computes the grid immediately but delivers it through the event loop, honoring cancellation.

Definition at line 69 of file HeightSource.h.

Member Function Documentation

◆ cancelRequest()

void ProceduralHeightSource::cancelRequest ( int requestId )

finalvirtual

Cancel a pending request. No signal is emitted for a cancelled request.

Implements HeightSource.

Definition at line 51 of file HeightSource.cc.

◆ heightAtWorld()

virtual float ProceduralHeightSource::heightAtWorld ( const QPointF & world ) const

protectedpure virtual

Height in meters at a world-space ground position.

Implemented in FlatHeightSource, and DebugHeightSource.

Referenced by HeightSource(), and requestTile().

◆ HeightSource()

HeightSource::HeightSource ( QObject * parent = nullptr )

explicit

Definition at line 33 of file HeightSource.cc.

References heightAtWorld().

◆ requestPatchHeights()

int ProceduralHeightSource::requestPatchHeights	(	const TileMath::TileKey &	key,
		int	gridSize
	)

finalvirtual

Request the vertex height grid for a patch. Returns a request id (> 0).

Implements HeightSource.

Definition at line 17 of file HeightSource.cc.

References HeightSource::_nextRequestId(), TileMath::tileMinCorner(), TileMath::tileSpanAtZoom(), and TileMath::TileKey::zoom.

◆ requestTile()

bool ProceduralHeightSource::requestTile ( const TileMath::TileKey & key )

overridevirtual

Synthesizes the tile grid from heightAtWorld and inserts it into the attached field through the event loop (mimicking async tile delivery)

Reimplemented from HeightSource.

Definition at line 56 of file HeightSource.cc.

References HeightSource::_heightField, HeightField::hasTile(), ElevationTilePyramid::Grid::height, heightAtWorld(), ElevationTilePyramid::Grid::heights, TileMath::isValidKey(), kSynthGridSize, TileMath::tileMinCorner(), TileMath::tileSpanAtZoom(), ElevationTilePyramid::Grid::width, and TileMath::TileKey::zoom.

Member Data Documentation

◆ kSynthGridSize

constexpr int ProceduralHeightSource::kSynthGridSize = 33

staticconstexpr

samples per edge of a synthesized tile

Definition at line 76 of file HeightSource.h.

Referenced by requestTile().

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

src/GeoMap/HeightSource.h
src/GeoMap/HeightSource.cc

Public Member Functions

Static Public Attributes

Protected Member Functions

Additional Inherited Members