Package com.jme3.terrain.heightmap

Class CombinerHeightMap

java.lang.Object

com.jme3.terrain.heightmap.AbstractHeightMap

com.jme3.terrain.heightmap.CombinerHeightMap

All Implemented Interfaces:

HeightMap

public class CombinerHeightMap
extends AbstractHeightMap

Generates a new height map based on two provided height maps. These maps can either be added together or subtracted from each other. Each heightmap has a weight to determine how much one will affect the other. By default, it is set to 0.5, 0.5, meaning the two heightmaps have equal weight. This value can be adjusted at will, as long as the two factors sum to 1.

Field Summary

Fields

Modifier and Type	Field	Description
static final int	ADDITION	Constant mode to denote adding the two heightmaps.
static final int	SUBTRACTION	Constant mode to denote subtracting the two heightmaps.

Fields inherited from class com.jme3.terrain.heightmap.AbstractHeightMap

filter, heightData, heightScale, NORMALIZE_RANGE, size

Constructor Summary

Constructors

Constructor	Description
CombinerHeightMap(AbstractHeightMap map1, float factor1, AbstractHeightMap map2, float factor2, int mode)	Constructor combines two given heightmaps by the specified mode.
CombinerHeightMap(AbstractHeightMap map1, AbstractHeightMap map2, int mode)	Constructor combines two given heightmaps by the specified mode.

Method Summary

Modifier and Type	Method	Description
boolean	load()	load builds a new heightmap based on the combination of two other heightmaps.
void	setFactors(float factor1, float factor2)	setFactors sets the distribution of heightmaps.
void	setHeightMaps(AbstractHeightMap map1, AbstractHeightMap map2)	setHeightMaps sets the height maps to combine.
void	setMode(int mode)	setMode sets the mode of the combiner.

Methods inherited from class com.jme3.terrain.heightmap.AbstractHeightMap

erodeTerrain, findMinMaxHeights, flatten, getHeightMap, getInterpolatedHeight, getScaledHeightAtPoint, getScaledHeightMap, getSize, getTrueHeightAtPoint, normalizeTerrain, save, setHeightAtPoint, setHeightScale, setMagnificationFilter, setSize, smooth, smooth, unloadHeightMap

Methods inherited from class java.lang.Object

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

Field Details

ADDITION

public static final int ADDITION

Constant mode to denote adding the two heightmaps.

See Also:

• Constant Field Values

SUBTRACTION

public static final int SUBTRACTION

Constant mode to denote subtracting the two heightmaps.

See Also:

• Constant Field Values

Constructor Details

CombinerHeightMap

public CombinerHeightMap(AbstractHeightMap map1,
 AbstractHeightMap map2,
 int mode)
                  throws Exception

Constructor combines two given heightmaps by the specified mode. The heightmaps will be evenly distributed. The heightmaps must be of the same size.

Parameters:

map1 - the first heightmap to combine.

map2 - the second heightmap to combine.

mode - denotes whether to add or subtract the heightmaps, may be either ADDITION or SUBTRACTION.

Throws:

Exception - if either map is null, their size do not match or the mode is invalid.

CombinerHeightMap

public CombinerHeightMap(AbstractHeightMap map1,
 float factor1,
 AbstractHeightMap map2,
 float factor2,
 int mode)
                  throws Exception

Constructor combines two given heightmaps by the specified mode. The heightmaps will be distributed based on the given factors. For example, if factor1 is 0.6 and factor2 is 0.4, then 60% of map1 will be used with 40% of map2. The two factors must add up to 1.0. The heightmaps must also be of the same size.

Parameters:

map1 - the first heightmap to combine.

factor1 - the factor for map1.

map2 - the second heightmap to combine.

factor2 - the factor for map2.

mode - denotes whether to add or subtract the heightmaps, may be either ADDITION or SUBTRACTION.

Throws:

Exception - if either map is null, their size do not match, the mode is invalid, or the factors do not add to 1.0.

Method Details

setFactors

public void setFactors(float factor1,
 float factor2)
                throws Exception

setFactors sets the distribution of heightmaps. For example, if factor1 is 0.6 and factor2 is 0.4, then 60% of map1 will be used with 40% of map2. The two factors must add up to 1.0.

Parameters:

factor1 - the factor for map1.

factor2 - the factor for map2.

Throws:

Exception - if the factors do not add to 1.0.

setHeightMaps

public void setHeightMaps(AbstractHeightMap map1,
 AbstractHeightMap map2)
                   throws Exception

setHeightMaps sets the height maps to combine. The size of the height maps must be the same.

Parameters:

map1 - the first height map.

map2 - the second height map.

Throws:

Exception - if either height map is null, or their sizes do not match.

setMode

public void setMode(int mode)
             throws Exception

setMode sets the mode of the combiner. This may either be ADDITION or SUBTRACTION.

Parameters:

mode - the mode of the combiner.

Throws:

Exception - if mode is not ADDITION or SUBTRACTION.

load

public boolean load()

load builds a new heightmap based on the combination of two other heightmaps. The conditions of the combiner determine the final outcome of the heightmap.

Returns:

boolean if the heightmap was successfully created.