org.j3d.terrain

Class AbstractFreeFormTerrainData

java.lang.Object

org.j3d.terrain.AbstractTerrainData

org.j3d.terrain.AbstractFreeFormTerrainData

All Implemented Interfaces:

HeightDataSource, FreeFormTerrainData, TerrainData

public abstract class AbstractFreeFormTerrainData
extends AbstractTerrainData
implements FreeFormTerrainData

Abstract representation of free-form terrain data.

This implementation provides the ability to also use an external providers of texture information.

Version:

$Revision: 1.2 $

Author:

Justin Couch

Field Summary

Fields

Modifier and Type	Field and Description
protected int	gridDepth The number of grid points per tile in depth
protected int	gridWidth The number of grid points per tile in width
protected TextureTileGenerator	tileGenerator Reference to the currently set texture tile generator

Fields inherited from class org.j3d.terrain.AbstractTerrainData

colorAvailable, gridStepX, gridStepY, textureAvailable

Fields inherited from interface org.j3d.terrain.TerrainData

FREEFORM_DATA, STATIC_DATA, TILED_DATA

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractFreeFormTerrainData() Create a new instance.of this data class with all flags set to false.

Method Summary

Modifier and Type	Method and Description
int	getGridDepth() Get the total depth (number of points on the X axis) of the grid.
int	getGridWidth() Get the total width (number of points on the Y axis) of the grid.
BufferedImage	getTexture(Rectangle bounds) Fetch the texture or part of a texture that can be applied to the sub-region of the overall object.
void	setTextureTileGenerator(TextureTileGenerator gen) Set the texture tile geneattor instance to the new value.

Methods inherited from class org.j3d.terrain.AbstractTerrainData

getGridXStep, getGridYStep, getSourceDataType, hasColor, hasTexture

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.j3d.terrain.TerrainData

getCoordinate, getCoordinate, getCoordinateWithColor, getCoordinateWithTexture, getGridXStep, getGridYStep, getHeightFromGrid, getSourceDataType, hasColor, hasTexture

Methods inherited from interface org.j3d.geom.terrain.HeightDataSource

getHeight

Field Detail

tileGenerator

protected TextureTileGenerator tileGenerator

Reference to the currently set texture tile generator

gridWidth

protected int gridWidth

The number of grid points per tile in width

gridDepth

protected int gridDepth

The number of grid points per tile in depth

Constructor Detail

AbstractFreeFormTerrainData

protected AbstractFreeFormTerrainData()

Create a new instance.of this data class with all flags set to false.

Method Detail

getGridWidth

public int getGridWidth()

Get the total width (number of points on the Y axis) of the grid. Assumes the total max width is known.

Specified by:

getGridWidth in interface FreeFormTerrainData

Returns:

The number of points in the width if the grid

getGridDepth

public int getGridDepth()

Get the total depth (number of points on the X axis) of the grid. Assumes the total max width is known.

Specified by:

getGridDepth in interface FreeFormTerrainData

Returns:

The number of points in the depth of the grid

getTexture

public BufferedImage getTexture(Rectangle bounds)

Fetch the texture or part of a texture that can be applied to the sub-region of the overall object. This is to allow for texture tiling of very large texture images or terrain items. If there is no texture or no texture for that region, then this should return null.

If the texture object only covers parts of the bounds, that is fine. Just return the full object and make sure the texture coordinates and texture attributes are correctly set up.

Specified by:

getTexture in interface FreeFormTerrainData

Parameters:

bounds - The bounds of the region based on the grid positions

Returns:

The texture object suitable for that bounds or null

setTextureTileGenerator

public void setTextureTileGenerator(TextureTileGenerator gen)

Set the texture tile geneattor instance to the new value. Setting a value of null will clear the current instance. Calling this method with a non-null generator instance does not automatically set the has texture flag.

Parameters:

gen - The new generator instance to use