org.xmlcml.euclid

Class Real2Interval

java.lang.Object

org.xmlcml.euclid.Real2Interval

All Implemented Interfaces:

EuclidConstants

public class Real2Interval
extends Object
implements EuclidConstants

a two dimensional area. may have negative ranges

Author:

pm286

Field Summary

Fields inherited from interface org.xmlcml.euclid.EuclidConstants

C_AMP, C_APOS, C_ATSIGN, C_BACKSLASH, C_BACKSPACE, C_CARET, C_COLON, C_COMMA, C_DEL, C_DOLLAR, C_EQUALS, C_FORMFEED, C_HASH, C_LANGLE, C_LBRAK, C_LCURLY, C_LSQUARE, C_MINUS, C_NBSP, C_NEWLINE, C_NL, C_PERCENT, C_PERIOD, C_PIPE, C_PLUS, C_POUND, C_QUERY, C_QUOT, C_RANGLE, C_RBRAK, C_RCURLY, C_RETURN, C_RSQUARE, C_SEMICOLON, C_SHRIEK, C_SLASH, C_SPACE, C_STAR, C_TAB, C_TILDE, C_UNDER, EPS, F_S, NONWHITEPUNC, NONWHITEPUNC0, NONWHITEPUNC0REGEX, ONE_THIRD, PUNC, S_AMP, S_APOS, S_ATSIGN, S_BACKSLASH, S_CARET, S_COLON, S_COMMA, S_DOLLAR, S_EMPTY, S_EQUALS, S_FORMFEED, S_HASH, S_LANGLE, S_LBRAK, S_LCURLY, S_LSQUARE, S_MINUS, S_NEWLINE, S_NL, S_PERCENT, S_PERIOD, S_PIPE, S_PLUS, S_POUND, S_QUERY, S_QUOT, S_RANGLE, S_RBRAK, S_RCURLY, S_RETURN, S_RSQUARE, S_SEMICOLON, S_SHRIEK, S_SLASH, S_SPACE, S_STAR, S_TAB, S_TILDE, S_UNDER, S_WHITEREGEX, TWO_THIRDS, U_S, WHITESPACE

Constructor Summary

Constructors

Constructor and Description
Real2Interval() constructor.
Real2Interval(Real2Interval xyInterval) copy constructor.
Real2Interval(Real2Range range2) constructor from range.
Real2Interval(RealInterval xInterval, RealInterval yInterval) constructor from 1-D intervals.

Method Summary

Modifier and Type	Method and Description
Real2	midPoint() gets midpoint.
double[]	offsetsTo(Real2Interval interval2) offset to map one interval onto another.
double[]	offsetsTo(Real2Interval interval2, double scale) offsets to overlap origins in each isotropic scales scales these by scale
double[]	offsetsTo(Real2Interval interval2, double[] scales) offsets to overlap origins in each scales these by scales and then calculates offsets to overlap midpoints
double[]	scalesTo(Real2Interval interval2) get x and y scales to other interval2.
double	scaleTo(Real2Interval interval2) get isotropic scale to other interval2.

Methods inherited from class java.lang.Object

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

Constructor Detail

Real2Interval

public Real2Interval()

constructor. defaults to 0,1 0,1

Real2Interval

public Real2Interval(RealInterval xInterval,
                     RealInterval yInterval)

constructor from 1-D intervals.

Parameters:

xInterval -

yInterval -

Real2Interval

public Real2Interval(Real2Interval xyInterval)

copy constructor.

Parameters:

xyInterval -

Real2Interval

public Real2Interval(Real2Range range2)

constructor from range. interval direction is therefore always positive

Parameters:

range2 -

Method Detail

scalesTo

public double[] scalesTo(Real2Interval interval2)

get x and y scales to other interval2. exact scaling

Parameters:

interval2 -

Returns:

scales never null but component(s) may be NaN

scaleTo

public double scaleTo(Real2Interval interval2)

get isotropic scale to other interval2. takes minimum value of x and y scales

Parameters:

interval2 -

Returns:

scale may be NaN

offsetsTo

public double[] offsetsTo(Real2Interval interval2,
                          double[] scales)

offsets to overlap origins in each scales these by scales and then calculates offsets to overlap midpoints

Parameters:

interval2 -

scales - (some might be NaN)

Returns:

offsets (components might be NaN.

offsetsTo

public double[] offsetsTo(Real2Interval interval2,
                          double scale)

offsets to overlap origins in each isotropic scales scales these by scale

Parameters:

interval2 -

scale -

Returns:

offsets (components might be NaN.

offsetsTo

public double[] offsetsTo(Real2Interval interval2)

offset to map one interval onto another. exact mapping in both directions

Parameters:

interval2 -

Returns:

offset applied after scaling

midPoint

public Real2 midPoint()

gets midpoint.

Returns:

midpoint of both axes