org.tinspin.index.qtplain

Class QUtil

java.lang.Object

org.tinspin.index.qtplain.QUtil

public class QUtil
extends Object

Constructor Summary

Constructors

Constructor and Description
QUtil()

Method Summary

Modifier and Type	Method and Description
static double	distance(double[] p1, double[] p2)
static double	distToRectCenter(double[] p, double[] rMin, double[] rMax) Calculates distance to center point of rectangle.
static double	distToRectCenter(double[] p, QREntry<?> e) Calculates distance to center point of rectangle.
static double	distToRectEdge(double[] p, QREntry<?> e) Calculates distance to edge of rectangle.
static boolean	isPointEnclosed(double[] point, double[] center, double radius)
static boolean	isPointEnclosed(double[] point, double[] min, double[] max)
static boolean	isPointEqual(double[] p1, double[] p2)
static boolean	isRectEnclosed(double[] minEnclosed, double[] maxEnclosed, double[] centerOuter, double radiusOuter)
static boolean	isRectEnclosed(double[] minEnclosed, double[] maxEnclosed, double[] minOuter, double[] maxOuter)
static boolean	isRectEnclosed(double[] centerEnclosed, double radiusEnclosed, double[] centerOuter, double radiusOuter)
static boolean	isRectEqual(double[] p1L, double[] p1U, double[] p2L, double[] p2U)
static <T> boolean	isRectEqual(QREntry<T> e, double[] keyL, double[] keyU)
static boolean	overlap(double[] min, double[] max, double[] center, double radius)
static boolean	overlap(double[] min, double[] max, double[] min2, double[] max2)
static boolean	overlap(double[] center, double radius, double[] center2, double radius2)

Methods inherited from class java.lang.Object

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

Constructor Detail

QUtil

public QUtil()

Method Detail

isPointEnclosed

public static boolean isPointEnclosed(double[] point,
                                      double[] min,
                                      double[] max)

isPointEnclosed

public static boolean isPointEnclosed(double[] point,
                                      double[] center,
                                      double radius)

isPointEqual

public static boolean isPointEqual(double[] p1,
                                   double[] p2)

isRectEqual

public static boolean isRectEqual(double[] p1L,
                                  double[] p1U,
                                  double[] p2L,
                                  double[] p2U)

isRectEqual

public static <T> boolean isRectEqual(QREntry<T> e,
                                      double[] keyL,
                                      double[] keyU)

overlap

public static boolean overlap(double[] min,
                              double[] max,
                              double[] min2,
                              double[] max2)

overlap

public static boolean overlap(double[] min,
                              double[] max,
                              double[] center,
                              double radius)

overlap

public static boolean overlap(double[] center,
                              double radius,
                              double[] center2,
                              double radius2)

isRectEnclosed

public static boolean isRectEnclosed(double[] minEnclosed,
                                     double[] maxEnclosed,
                                     double[] minOuter,
                                     double[] maxOuter)

isRectEnclosed

public static boolean isRectEnclosed(double[] minEnclosed,
                                     double[] maxEnclosed,
                                     double[] centerOuter,
                                     double radiusOuter)

isRectEnclosed

public static boolean isRectEnclosed(double[] centerEnclosed,
                                     double radiusEnclosed,
                                     double[] centerOuter,
                                     double radiusOuter)

distance

public static double distance(double[] p1,
                              double[] p2)

distToRectCenter

public static double distToRectCenter(double[] p,
                                      double[] rMin,
                                      double[] rMax)

Calculates distance to center point of rectangle.

Parameters:

p - point

rMin - rectangle min

rMax - rectangle max

Returns:

distance to center point

distToRectCenter

public static double distToRectCenter(double[] p,
                                      QREntry<?> e)

Calculates distance to center point of rectangle.

Parameters:

p - point

e - rectangle

Returns:

distance to center point

distToRectEdge

public static double distToRectEdge(double[] p,
                                    QREntry<?> e)

Calculates distance to edge of rectangle.

Parameters:

p - point

e - rectangle

Returns:

distance to edge point