Package org.mapsforge.map.layer.hills

Class MemoryCachingHgtReaderTileSource

java.lang.Object

org.mapsforge.map.layer.hills.MemoryCachingHgtReaderTileSource

All Implemented Interfaces:

ShadeTileSource

public class MemoryCachingHgtReaderTileSource
extends java.lang.Object
implements ShadeTileSource

Mutable configuration frontend for an underlying HgtCache (that will be replaced in one piece when parameters change)

Constructor Summary

Constructors

Constructor	Description
MemoryCachingHgtReaderTileSource(java.io.File demFolder, ShadingAlgorithm algorithm, org.mapsforge.core.graphics.GraphicFactory graphicsFactory)
MemoryCachingHgtReaderTileSource(org.mapsforge.core.graphics.GraphicFactory graphicsFactory)

Method Summary

Modifier and Type	Method	Description
void	applyConfiguration(boolean allowParallel)
ShadingAlgorithm	getAlgorithm()
java.io.File	getDemFolder()
org.mapsforge.core.graphics.HillshadingBitmap	getHillshadingBitmap(int latitudeOfSouthWestCorner, int longituedOfSouthWestCorner, double pxPerLat, double pxPerLng)	main work method
int	getMainCacheSize()
int	getNeighborCacheSize()
boolean	isEnableInterpolationOverlap()
void	prepareOnThread()	prepare anything lazily derived from configuration off this thread
void	setDemFolder(java.io.File demFolder)
void	setEnableInterpolationOverlap(boolean enableInterpolationOverlap)
void	setMainCacheSize(int mainCacheSize)
void	setNeighborCacheSize(int neighborCacheSize)
void	setShadingAlgorithm(ShadingAlgorithm algorithm)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

MemoryCachingHgtReaderTileSource

public MemoryCachingHgtReaderTileSource(java.io.File demFolder,
                                        ShadingAlgorithm algorithm,
                                        org.mapsforge.core.graphics.GraphicFactory graphicsFactory)

MemoryCachingHgtReaderTileSource

public MemoryCachingHgtReaderTileSource(org.mapsforge.core.graphics.GraphicFactory graphicsFactory)

Method Detail

applyConfiguration

public void applyConfiguration(boolean allowParallel)

Specified by:

applyConfiguration in interface ShadeTileSource

prepareOnThread

public void prepareOnThread()

Description copied from interface: ShadeTileSource

prepare anything lazily derived from configuration off this thread

Specified by:

prepareOnThread in interface ShadeTileSource

getHillshadingBitmap

public org.mapsforge.core.graphics.HillshadingBitmap getHillshadingBitmap(int latitudeOfSouthWestCorner,
                                                                          int longituedOfSouthWestCorner,
                                                                          double pxPerLat,
                                                                          double pxPerLng)
                                                                   throws java.util.concurrent.ExecutionException,
                                                                          java.lang.InterruptedException

Description copied from interface: ShadeTileSource

main work method

Specified by:

getHillshadingBitmap in interface ShadeTileSource

Throws:

java.util.concurrent.ExecutionException

java.lang.InterruptedException

setShadingAlgorithm

public void setShadingAlgorithm(ShadingAlgorithm algorithm)

Specified by:

setShadingAlgorithm in interface ShadeTileSource

setDemFolder

public void setDemFolder(java.io.File demFolder)

Specified by:

setDemFolder in interface ShadeTileSource

setMainCacheSize

public void setMainCacheSize(int mainCacheSize)

Parameters:

mainCacheSize - number of recently used shading tiles (whole numer latitude/longitude grid) that are kept in memory (default: 4)

setNeighborCacheSize

public void setNeighborCacheSize(int neighborCacheSize)

Parameters:

neighborCacheSize - number of additional shading tiles to keep in memory for interpolationOverlap (ignored if enableInterpolationOverlap is false)

setEnableInterpolationOverlap

public void setEnableInterpolationOverlap(boolean enableInterpolationOverlap)

Parameters:

enableInterpolationOverlap - false is faster, but shows minor artifacts along the latitude/longitude (if true, preparing a shading tile for high resolution use requires all 4 neighboring tiles to be loaded if they are not in memory)

getMainCacheSize

public int getMainCacheSize()

getNeighborCacheSize

public int getNeighborCacheSize()

isEnableInterpolationOverlap

public boolean isEnableInterpolationOverlap()

getDemFolder

public java.io.File getDemFolder()

getAlgorithm

public ShadingAlgorithm getAlgorithm()