org.geolatte.geom.curve

Class MortonContext

java.lang.Object

org.geolatte.geom.curve.MortonContext

public class MortonContext
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 extent, int depth) Constructs a MortonContext with the specified extent and max.

Method Summary

Modifier and Type	Method and Description
boolean	extentContains(Envelope envelope) Checks whether the specified Envelope is contained in the extent.
boolean	extentContains(Point pnt) Checks whether the specified Point is contained in the extent.
CrsId	getCrsId() Returns the CrsId of the spatial extent
int	getDepth() Returns the maximum tree-depth
Envelope	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 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

getCrsId

public CrsId getCrsId()

Returns the CrsId of the spatial extent

Returns:

the CrsId of the spatial extent

extentContains

public boolean extentContains(Point pnt)

Checks whether the specified Point is contained in the extent.

Parameters:

pnt - 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 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 getExtent()

Returns the spatial extent of this instance

Returns:

an Envelope representing the spatial extent of this instance