Package org.locationtech.spatial4j.shape.impl

Class BBoxCalculator

java.lang.Object

org.locationtech.spatial4j.shape.impl.BBoxCalculator

public class BBoxCalculator
extends java.lang.Object

(INTERNAL) Calculates the minimum bounding box given a bunch of rectangles (ranges). It's a temporary object and not thread-safe; throw it away when done. For a cartesian space, the calculations are trivial but it is not for geodetic. For geodetic, it must maintain an ordered set of disjoint ranges as each range is provided.

Field Summary

Fields

Modifier and Type	Field	Description
private SpatialContext	ctx
private double	maxX
private double	maxY
private double	minX
private double	minY
private java.util.TreeMap<java.lang.Double,java.lang.Double>	ranges	Sorted list of disjoint X ranges keyed by maxX and with minX stored as the "value".

Constructor Summary

Constructors

Constructor	Description
BBoxCalculator(SpatialContext ctx)

Method Summary

Modifier and Type	Method	Description
boolean	doesXWorldWrap()
void	expandRange(double minX, double maxX, double minY, double maxY)
void	expandRange(Rectangle rect)
void	expandXRange(double minX, double maxX)
Rectangle	getBoundary()
double	getMaxX()
double	getMaxY()
double	getMinX()
double	getMinY()
private void	processRanges()
private static boolean	rangeContains(double minX, double maxX, double x)

Methods inherited from class java.lang.Object

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

Field Detail

ctx

private final SpatialContext ctx

minY

private double minY

maxY

private double maxY

minX

private double minX

maxX

private double maxX

ranges

private java.util.TreeMap<java.lang.Double,java.lang.Double> ranges

Sorted list of disjoint X ranges keyed by maxX and with minX stored as the "value".

Constructor Detail

BBoxCalculator

public BBoxCalculator(SpatialContext ctx)

Method Detail

expandRange

public void expandRange(Rectangle rect)

expandRange

public void expandRange(double minX,
                        double maxX,
                        double minY,
                        double maxY)

expandXRange

public void expandXRange(double minX,
                         double maxX)

processRanges

private void processRanges()

rangeContains

private static boolean rangeContains(double minX,
                                     double maxX,
                                     double x)

doesXWorldWrap

public boolean doesXWorldWrap()

getBoundary

public Rectangle getBoundary()

getMinX

public double getMinX()

getMaxX

public double getMaxX()

getMinY

public double getMinY()

getMaxY

public double getMaxY()