org.deegree.rendering.r3d.opengl.rendering.dem.texturing
Class TextureTileRequest

java.lang.Object
  org.deegree.rendering.r3d.opengl.rendering.dem.texturing.TextureTileRequest

Direct Known Subclasses:

TextureRequest

public class TextureTileRequest
extends Object

Represents the request for a TextureTile.

Version:

$Revision: $, $Date: $

Author:

Markus Schneider, last edited by: $Author: schneider $

Constructor Summary

TextureTileRequest(double minX, double minY, double maxX, double maxY, float metersPerPixel)

TextureTileRequest(TextureRequest request)

Method Summary

boolean	equals(Object o)
double	getMaxX()
double	getMaxY()
double	getMinX()
double	getMinY()
float	getUnitsPerPixel()
int	hashCode() Implementation as proposed by Joshua Block in Effective Java (Addison-Wesley 2001), which supplies an even distribution and is relatively fast.
boolean	isFullfilled(TextureTile candidate)
boolean	isFullfilled(TextureTileRequest candidate, double epsilon)
void	merge(TextureTileRequest otherRequest) Merge two requests.
boolean	shareCorner(TextureTileRequest that)
boolean	shareCornerNE(TextureTileRequest that)
boolean	shareCornerNW(TextureTileRequest that)
boolean	shareCornerSE(TextureTileRequest that)
boolean	shareCornerSW(TextureTileRequest that)
boolean	supersedes(TextureTileRequest that) Returns whether this TextureRequest supersedes another TextureRequest.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

TextureTileRequest

public TextureTileRequest(TextureRequest request)

Parameters:

request - to copy the values from.

TextureTileRequest

public TextureTileRequest(double minX,
                          double minY,
                          double maxX,
                          double maxY,
                          float metersPerPixel)

Parameters:

minX -

minY -

maxX -

maxY -

metersPerPixel -

Method Detail

shareCorner

public boolean shareCorner(TextureTileRequest that)

Parameters:

that -

Returns:

true if two request share a border.

shareCornerNW

public boolean shareCornerNW(TextureTileRequest that)

Parameters:

that -

Returns:

true if the two request share the North-West corner.

shareCornerNE

public boolean shareCornerNE(TextureTileRequest that)

Parameters:

that -

Returns:

true if the two request share the North-East corner.

shareCornerSW

public boolean shareCornerSW(TextureTileRequest that)

Parameters:

that -

Returns:

true if the two request share the South-West corner.

shareCornerSE

public boolean shareCornerSE(TextureTileRequest that)

Parameters:

that -

Returns:

true if the two request share the South-East corner.

supersedes

public boolean supersedes(TextureTileRequest that)

Returns whether this TextureRequest supersedes another TextureRequest.

This is true iff:

• the bbox of the other request lies completely inside the bbox of this request (or coincides with it)
• the meters per pixel of the other request is less than or equal to the meters per pixel of this request

Parameters:

that -

Returns:

true, if this request supersedes the given request, false otherwise

merge

public void merge(TextureTileRequest otherRequest)

Merge two requests.

Parameters:

otherRequest -

getMinX

public double getMinX()

Returns:

min x position

getMinY

public double getMinY()

Returns:

min y position

getMaxX

public double getMaxX()

Returns:

max x position

getMaxY

public double getMaxY()

Returns:

max y position

getUnitsPerPixel

public float getUnitsPerPixel()

Returns:

number of meters per pixel (a scale).

hashCode

public int hashCode()

Implementation as proposed by Joshua Block in Effective Java (Addison-Wesley 2001), which supplies an even distribution and is relatively fast. It is created from field f as follows:

• boolean -- code = (f ? 0 : 1)
• byte, char, short, int -- code = (int)f
• long -- code = (int)(f ^ (f >>>32))
• float -- code = Float.floatToIntBits(f);
• double -- long l = Double.doubleToLongBits(f); code = (int)(l ^ (l >>> 32))
• all Objects, (where equals( ) calls equals( ) for this field) -- code = f.hashCode( )
• Array -- Apply above rules to each element

Combining the hash code(s) computed above: result = 37 * result + code;

Overrides:

hashCode in class Object

Returns:

(int) ( result >>> 32 ) ^ (int) result;

See Also:

Object.hashCode()

equals

public boolean equals(Object o)

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object

isFullfilled

public boolean isFullfilled(TextureTile candidate)

Parameters:

candidate -

Returns:

true if this request covers the total area of the given 'candiate'.

isFullfilled

public boolean isFullfilled(TextureTileRequest candidate,
                            double epsilon)

Parameters:

candidate - which values are taken into consideration.

epsilon - is used to determine the tolerance of the scale factor.

Returns:

true if this request lies within the area of the given 'candiate' and the the resolution of this is larger or withing epsilon range of the given candidate.