org.apache.batik.ext.awt.geom

Class Quadradic

java.lang.Object

org.apache.batik.ext.awt.geom.AbstractSegment

org.apache.batik.ext.awt.geom.Quadradic

All Implemented Interfaces:

java.lang.Cloneable, Segment

public class Quadradic
extends AbstractSegment

A class representing a quadratic path segment.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.batik.ext.awt.geom.Segment

Segment.SplitResults

Field Summary

Fields

Modifier and Type	Field and Description
java.awt.geom.Point2D.Double	p1
java.awt.geom.Point2D.Double	p2
java.awt.geom.Point2D.Double	p3

Constructor Summary

Constructors

Constructor and Description
Quadradic()
Quadradic(double x1, double y1, double x2, double y2, double x3, double y3)
Quadradic(java.awt.geom.Point2D.Double p1, java.awt.geom.Point2D.Double p2, java.awt.geom.Point2D.Double p3)

Method Summary

Modifier and Type	Method and Description
java.lang.Object	clone()
java.awt.geom.Point2D.Double	eval(double t)
java.awt.geom.Point2D.Double	evalDt(double t)
protected int	findRoots(double y, double[] roots)
java.awt.geom.Rectangle2D	getBounds2D()
double	getLength()
double	getLength(double maxErr)
Segment	getSegment(double t0, double t1)
double	maxX()
double	maxY()
double	minX()
double	minY()
Segment	reverse()
void	subdivide(double t, Quadradic q0, Quadradic q1) Subdivides this Quadradic curve into two curves at given t.
void	subdivide(double t, Segment s0, Segment s1) Subdivides this Quadradic curve into two curves at t.
void	subdivide(Quadradic q0, Quadradic q1) Subdivides this Quadradic curve into two curves at t = 0.5.
void	subdivide(Segment s0, Segment s1) Subdivides this Quadradic curve into two curves at t = 0.5.
protected double	subLength(double leftLegLen, double rightLegLen, double maxErr)
java.lang.String	toString()

Methods inherited from class org.apache.batik.ext.awt.geom.AbstractSegment

matchSign, solveCubic, solveLine, solveQuad, split, splitAfter, splitBefore

Methods inherited from class java.lang.Object

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

Field Detail

p1

public java.awt.geom.Point2D.Double p1

p2

public java.awt.geom.Point2D.Double p2

p3

public java.awt.geom.Point2D.Double p3

Constructor Detail

Quadradic

public Quadradic()

Quadradic

public Quadradic(double x1,
                 double y1,
                 double x2,
                 double y2,
                 double x3,
                 double y3)

Quadradic

public Quadradic(java.awt.geom.Point2D.Double p1,
                 java.awt.geom.Point2D.Double p2,
                 java.awt.geom.Point2D.Double p3)

Method Detail

clone

public java.lang.Object clone()

Overrides:

clone in class java.lang.Object

reverse

public Segment reverse()

minX

public double minX()

maxX

public double maxX()

minY

public double minY()

maxY

public double maxY()

getBounds2D

public java.awt.geom.Rectangle2D getBounds2D()

findRoots

protected int findRoots(double y,
                        double[] roots)

Specified by:

findRoots in class AbstractSegment

evalDt

public java.awt.geom.Point2D.Double evalDt(double t)

eval

public java.awt.geom.Point2D.Double eval(double t)

getSegment

public Segment getSegment(double t0,
                          double t1)

subdivide

public void subdivide(Quadradic q0,
                      Quadradic q1)

Subdivides this Quadradic curve into two curves at t = 0.5. can be done with getSegment but this is more efficent.

Parameters:

q0 - if non-null contains portion of curve from 0->.5

q1 - if non-null contains portion of curve from .5->1

subdivide

public void subdivide(double t,
                      Quadradic q0,
                      Quadradic q1)

Subdivides this Quadradic curve into two curves at given t.

Parameters:

q0 - if non-null contains portion of curve from 0->t.

q1 - if non-null contains portion of curve from t->1.

subdivide

public void subdivide(Segment s0,
                      Segment s1)

Subdivides this Quadradic curve into two curves at t = 0.5. can be done with getSegment but this is more efficent.

Parameters:

s0 - if non-null contains portion of curve from 0->.5

s1 - if non-null contains portion of curve from .5->1

subdivide

public void subdivide(double t,
                      Segment s0,
                      Segment s1)

Subdivides this Quadradic curve into two curves at t. can be done with getSegment but this is more efficent.

Parameters:

s0 - if non-null contains portion of curve from 0->.5

s1 - if non-null contains portion of curve from .5->1

subLength

protected double subLength(double leftLegLen,
                           double rightLegLen,
                           double maxErr)

getLength

public double getLength()

getLength

public double getLength(double maxErr)

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object