org.geolatte.geom.curve

Class MortonContext<P extends C2D>

java.lang.Object

org.geolatte.geom.curve.MortonContext<P>

public class MortonContext<P extends C2D>
extends Object

A context for the calculation of Morton codes.

This class holds the the maximum spatial extent and tree-depth of the implied QuadTree-index for a MortonCode.

Author:

Karel Maesen, Geovise BVBA creation-date: 2/19/13

Constructor Summary

Constructors

Constructor and Description
MortonContext(Envelope<P> extent, int depth) Constructs a MortonContext with the specified extent and max.

Method Summary

Modifier and Type	Method and Description
boolean	extentContains(Envelope<P> envelope) Checks whether the specified Envelope is contained in the extent.
boolean	extentContains(P pos) Checks whether the specified Point is contained in the extent.
CoordinateReferenceSystem<?>	getCoordinateReferenceSystem() Returns the CrsId of the spatial extent
int	getDepth() Returns the maximum tree-depth
Envelope<P>	getExtent() Returns the spatial extent of this instance
double	getMaxX() Returns the maximum X-coordinate of the extent.
double	getMaxY() Returns the maximum Y-coordinate of the extent.
double	getMinX() Returns the minimum X-coordinate of the extent
double	getMinY() Returns the minimum Y-coordinate of the extent

Methods inherited from class java.lang.Object

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

Constructor Detail

MortonContext

public MortonContext(Envelope<P> extent,
                     int depth)

Constructs a MortonContext with the specified extent and max. tree-depth

Parameters:

extent - the extent for this instance

depth - the tree-depth

Method Detail

getMaxX

public double getMaxX()

Returns the maximum X-coordinate of the extent.

Returns:

the maximum X-coordinate of the extent

getMaxY

public double getMaxY()

Returns the maximum Y-coordinate of the extent.

Returns:

the maximum Y-coordinate of the extent

getMinX

public double getMinX()

Returns the minimum X-coordinate of the extent

Returns:

the minimum X-coordinate of the extent

getMinY

public double getMinY()

Returns the minimum Y-coordinate of the extent

Returns:

the minimum Y-coordinate of the extent

getDepth

public int getDepth()

Returns the maximum tree-depth

Returns:

the maximum tree-depth

getCoordinateReferenceSystem

public CoordinateReferenceSystem<?> getCoordinateReferenceSystem()

Returns the CrsId of the spatial extent

Returns:

the CrsId of the spatial extent

extentContains

public boolean extentContains(P pos)

Checks whether the specified Point is contained in the extent.

Parameters:

pos - a Point value

Returns:

true if the specified point is contained in the extent, false otherwise

Throws:

IllegalArgumentException - if the specified point does not share this extent's CrsId

extentContains

public boolean extentContains(Envelope<P> envelope)

Checks whether the specified Envelope is contained in the extent.

Parameters:

envelope - an Envelope value

Returns:

true if the specified envelope is contained in the extent, false otherwise

Throws:

IllegalArgumentException - if the specified envelope does not share this extent's CrsId

getExtent

public Envelope<P> getExtent()

Returns the spatial extent of this instance

Returns:

an Envelope representing the spatial extent of this instance