Package com.jme3.terrain.heightmap

Class FluidSimHeightMap

java.lang.Object

com.jme3.terrain.heightmap.AbstractHeightMap

com.jme3.terrain.heightmap.FluidSimHeightMap

All Implemented Interfaces:

HeightMap

public class FluidSimHeightMap
extends AbstractHeightMap

FluidSimHeightMap generates a height map based using some sort of fluid simulation. The heightmap is treated as a highly viscous and rubbery fluid enabling to fine tune the generated heightmap using a number of parameters.

See Also:

• Terrain Generation Using Fluid Simulation

Field Summary

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

filter, heightData, heightScale, NORMALIZE_RANGE, size

Constructor Summary

Constructors

Constructor	Description
FluidSimHeightMap(int size, int iterations)	Constructor sets the attributes of the hill system and generates the height map.
FluidSimHeightMap(int size, int iterations, float minInitialHeight, float maxInitialHeight, float viscosity, float waveSpeed, float timestep, float nodeDistance, long seed)	Constructor sets the attributes of the hill system and generates the height map.

Method Summary

Modifier and Type	Method	Description
boolean	load()	Generates a heightmap using fluid simulation and the attributes set by the constructor or the setters.
void	setIterations(int iterations)	Sets the number of times the fluid simulation should be iterated over the heightmap.
void	setMaxInitialHeight(float maxInitialHeight)	Sets the maximum initial height of the terrain.
void	setMinInitialHeight(float minInitialHeight)	Sets the minimum initial height of the terrain.
void	setNodeDistance(float nodeDistance)	Sets the distance between each node of the heightmap.
void	setTimeStep(float timeStep)	Sets the time-speed between each iteration of the fluid simulation algorithm.
void	setViscosity(float viscosity)	Sets the viscosity of the simulated fluid.
void	setWaveSpeed(float waveSpeed)	Sets the speed at which the waves travel.

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

Constructor Details

FluidSimHeightMap

public FluidSimHeightMap(int size,
 int iterations,
 float minInitialHeight,
 float maxInitialHeight,
 float viscosity,
 float waveSpeed,
 float timestep,
 float nodeDistance,
 long seed)
                  throws Exception

Constructor sets the attributes of the hill system and generates the height map. It gets passed a number of tweakable parameters which fine-tune the outcome.

Parameters:

size - size the size of the terrain to be generated

iterations - the number of iterations to do

minInitialHeight - the minimum initial height of a terrain value

maxInitialHeight - the maximum initial height of a terrain value

viscosity - the viscosity of the fluid

waveSpeed - the speed at which the waves travel

timestep - the constant time-step between each iteration

nodeDistance - the distance between each node of the heightmap

seed - the seed to generate the same heightmap again

Throws:

Exception - if size of the terrain is not greater than zero, or number of iterations is not greater that zero, or the minimum initial height is greater than the maximum (or the other way around)

FluidSimHeightMap

public FluidSimHeightMap(int size,
 int iterations)
                  throws Exception

Constructor sets the attributes of the hill system and generates the height map.

Parameters:

size - size the size of the terrain to be generated

iterations - the number of iterations to do

Throws:

Exception - if size of the terrain is not greater than zero, or number of iterations is not greater than zero

Method Details

load

public boolean load()

Generates a heightmap using fluid simulation and the attributes set by the constructor or the setters.

Returns:

true if the load was successful, false otherwise.

setIterations

public void setIterations(int iterations)
                   throws Exception

Sets the number of times the fluid simulation should be iterated over the heightmap. The more iterations, the fewer features (hills, etcetera) the terrain will have, and the smoother it will be.

Parameters:

iterations - the number of iterations to perform

Throws:

Exception - if iterations is not greater than zero

setMaxInitialHeight

public void setMaxInitialHeight(float maxInitialHeight)

Sets the maximum initial height of the terrain.

Parameters:

maxInitialHeight - the maximum initial height

See Also:

• setMinInitialHeight(float)

setMinInitialHeight

public void setMinInitialHeight(float minInitialHeight)

Sets the minimum initial height of the terrain.

Parameters:

minInitialHeight - the minimum initial height

See Also:

• setMaxInitialHeight(float)

setNodeDistance

public void setNodeDistance(float nodeDistance)

Sets the distance between each node of the heightmap.

Parameters:

nodeDistance - the distance between each node

setTimeStep

public void setTimeStep(float timeStep)

Sets the time-speed between each iteration of the fluid simulation algorithm.

Parameters:

timeStep - the time-step between each iteration

setViscosity

public void setViscosity(float viscosity)

Sets the viscosity of the simulated fluid.

Parameters:

viscosity - the viscosity of the fluid

setWaveSpeed

public void setWaveSpeed(float waveSpeed)

Sets the speed at which the waves travel.

Parameters:

waveSpeed - the speed at which the waves travel