Package org.mapsforge.map.layer.hills

Class DiffuseLightShadingAlgorithm

java.lang.Object

org.mapsforge.map.layer.hills.AbsShadingAlgorithmDefaults

org.mapsforge.map.layer.hills.DiffuseLightShadingAlgorithm

All Implemented Interfaces:

ShadingAlgorithm

public class DiffuseLightShadingAlgorithm
extends AbsShadingAlgorithmDefaults

simulates diffuse lighting (without self-shadowing) except for scaling the light values below horizontal and above horizontal differently so that both make full use of the available dynamic range while maintinging horizontal neutral identical to SimpleShadingAlgorithm and to the standard neutral value that is filled in when there is no hillshading but the always-option is set to true in the theme.

More accurate than SimpleShadingAlgorithm, but maybe not as useful for visualizing both softly rolling hills and dramatic mountain ranges at the same time.

Nested Class Summary

Nested classes/interfaces inherited from interface org.mapsforge.map.layer.hills.ShadingAlgorithm

ShadingAlgorithm.RawHillTileSource, ShadingAlgorithm.RawShadingResult

Constructor Summary

Constructors

Constructor	Description
DiffuseLightShadingAlgorithm()
DiffuseLightShadingAlgorithm(float heightAngle)	height angle of light source over ground (in degrees 0..90)

Method Summary

Modifier and Type	Method	Description
protected byte[]	convert(java.nio.ByteBuffer din, int axisLength, int rowLen, int padding, org.mapsforge.map.layer.hills.HgtCache.HgtFileInfo fileInfo)
boolean	equals(java.lang.Object o)
int	getAxisLenght(org.mapsforge.map.layer.hills.HgtCache.HgtFileInfo source)
double	getLightHeight()
int	hashCode()
java.lang.String	toString()

Methods inherited from class org.mapsforge.map.layer.hills.AbsShadingAlgorithmDefaults

transformToByteBuffer

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

DiffuseLightShadingAlgorithm

public DiffuseLightShadingAlgorithm()

DiffuseLightShadingAlgorithm

public DiffuseLightShadingAlgorithm(float heightAngle)

height angle of light source over ground (in degrees 0..90)

Method Detail

getLightHeight

public double getLightHeight()

getAxisLenght

public int getAxisLenght(org.mapsforge.map.layer.hills.HgtCache.HgtFileInfo source)

convert

protected byte[] convert(java.nio.ByteBuffer din,
                         int axisLength,
                         int rowLen,
                         int padding,
                         org.mapsforge.map.layer.hills.HgtCache.HgtFileInfo fileInfo)
                  throws java.io.IOException

Specified by:

convert in class AbsShadingAlgorithmDefaults

Throws:

java.io.IOException

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object