PolyCurve2D (java-geom 3.3.1 API)

java.lang.Object
- math.geom2d.curve.CurveSet2D<T>
- - math.geom2d.curve.CurveArray2D<T>
  - - math.geom2d.curve.PolyCurve2D<T>

All Implemented Interfaces:

Serializable, Cloneable, Iterable<T>, ContinuousCurve2D, Curve2D, Shape2D

Direct Known Subclasses:

PolyBezierCurve2D, PolyCubicBezierCurve2D, PolyOrientedCurve2D
```
public class PolyCurve2D<T extends ContinuousCurve2D>
extends CurveArray2D<T>
implements ContinuousCurve2D
```
A PolyCurve2D is a set of piecewise smooth curve arcs, such that the end of a curve is the beginning of the next curve, and such that they do not intersect nor self-intersect.

Author:

dlegland

See Also:
Serialized Form

Field Summary

Fields
Modifier and Type Field and Description

protected boolean closed
flag for indicating if the curve is closed or not (default is open)
- Fields inherited from class math.geom2d.curve.CurveSet2D
  curves
- Fields inherited from interface math.geom2d.Shape2D
  ACCURACY

Fields
Modifier and Type	Field and Description
`protected boolean`	`closed` flag for indicating if the curve is closed or not (default is open)

Constructor Summary

Constructors
Constructor and Description
`PolyCurve2D()`
`PolyCurve2D(Collection<? extends T> curves)`
`PolyCurve2D(Collection<? extends T> curves, boolean closed)`
`PolyCurve2D(int n)`
`PolyCurve2D(T[] curves)`
`PolyCurve2D(T[] curves, boolean closed)`

Method Summary

Methods
Modifier and Type	Method and Description
`GeneralPath`	`appendPath(GeneralPath path)` Append the path of the curve to the given path.
`CurveSet2D<? extends ContinuousCurve2D>`	`clip(Box2D box)` Clip the PolyCurve2D by a box.
`void`	`draw(Graphics2D g2)` Draws the curve on the given Graphics2D object.
`boolean`	`equals(Object obj)` Returns true if obj is a CurveArray2D with the same number of curves, and such that each curve belongs to both objects.
`Polyline2D`	`getAsPolyline(int n)` Returns an approximation of the curve as a polyline with `n` line segments.
`Collection<? extends PolyCurve2D<?>>`	`getContinuousCurves()` Returns the collection of continuous curves which constitute this curve.
`GeneralPath`	`getGeneralPath()`
`Vector2D`	`getLeftTangent(double t)`
`PolyCurve2D<? extends ContinuousCurve2D>`	`getReverseCurve()` Returns the curve with same trace on the plane with parametrization in reverse order.
`Vector2D`	`getRightTangent(double t)`
`Collection<? extends SmoothCurve2D>`	`getSmoothPieces()` Returns a collection containing only instances of SmoothCurve2D.
`PolyCurve2D<? extends ContinuousCurve2D>`	`getSubCurve(double t0, double t1)` Returns an instance of PolyCurve2D.
`boolean`	`isClosed()` Returns true if the PolyCurve2D is closed.
`void`	`setClosed(boolean b)` Toggle the 'closed' flag of the polycurve.
`PolyCurve2D<? extends ContinuousCurve2D>`	`transform(AffineTransform2D trans)` Transforms each curve, and build a new CurveArray2D with the set of transformed curves.
`protected static <T extends ContinuousCurve2D> Collection<T>`	`wrapCurve(T curve)`

Methods inherited from class math.geom2d.curve.CurveArray2D
addCurve, clearCurves, clone, contains, contains, containsCurve, getAsAWTShape, getBoundingBox, getChildCurve, getCurve, getCurveIndex, getCurveNumber, getCurves, getDistance, getDistance, getFirstCurve, getFirstPoint, getGlobalPosition, getIntersections, getLastCurve, getLastPoint, getLocalPosition, getPoint, getPosition, getSingularPoints, getT0, getT1, isBounded, isEmpty, isSingular, iterator, project, removeCurve

Methods inherited from class math.geom2d.curve.CurveSet2D
fromUnitSegment, toUnitSegment

Methods inherited from class java.lang.Object
finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface math.geom2d.curve.Curve2D
clone, getAsAWTShape, getFirstPoint, getIntersections, getLastPoint, getPoint, getPosition, getSingularPoints, getT0, getT1, isSingular, project

Methods inherited from interface math.geom2d.Shape2D
contains, contains, getBoundingBox, getDistance, getDistance, isBounded, isEmpty

- Field Detail
  - closed
```
protected boolean closed
```
    flag for indicating if the curve is closed or not (default is open)
- Constructor Detail
  - PolyCurve2D
```
public PolyCurve2D()
```
  - PolyCurve2D
```
public PolyCurve2D(int n)
```
  - PolyCurve2D
```
public PolyCurve2D(T[] curves)
```
  - PolyCurve2D
```
public PolyCurve2D(T[] curves,
           boolean closed)
```
  - PolyCurve2D
```
public PolyCurve2D(Collection<? extends T> curves)
```
  - PolyCurve2D
```
public PolyCurve2D(Collection<? extends T> curves,
           boolean closed)
```
- Method Detail
  - wrapCurve
```
protected static <T extends ContinuousCurve2D> Collection<T> wrapCurve(T curve)
```
  - setClosed
```
public void setClosed(boolean b)
```
    Toggle the 'closed' flag of the polycurve.
  - getLeftTangent
```
public Vector2D getLeftTangent(double t)
```
    Specified by:
    
    getLeftTangent in interface ContinuousCurve2D
  - getRightTangent
```
public Vector2D getRightTangent(double t)
```
    Specified by:
    
    getRightTangent in interface ContinuousCurve2D
  - isClosed
```
public boolean isClosed()
```
    Returns true if the PolyCurve2D is closed.
    
    Specified by:
    
    isClosed in interface ContinuousCurve2D
  - getAsPolyline
```
public Polyline2D getAsPolyline(int n)
```
    Description copied from interface: ContinuousCurve2D
    
    Returns an approximation of the curve as a polyline with n line segments. If the curve is closed, the method should return an instance of Ring2D.
    
    Specified by:
    
    getAsPolyline in interface ContinuousCurve2D
    
    Parameters:
    n - the number of line segments
    
    Returns:
    a polyline with n line segments.
  - getSmoothPieces
```
public Collection<? extends SmoothCurve2D> getSmoothPieces()
```
    Returns a collection containing only instances of SmoothCurve2D.
    
    Specified by:
    
    getSmoothPieces in interface ContinuousCurve2D
    
    Returns:
    a collection of SmoothCurve2D
  - getContinuousCurves
```
public Collection<? extends PolyCurve2D<?>> getContinuousCurves()
```
    Description copied from interface: Curve2D
    
    Returns the collection of continuous curves which constitute this curve.
    
    Specified by:
    
    getContinuousCurves in interface Curve2D
    
    Overrides:
    
    getContinuousCurves in class CurveArray2D<T extends ContinuousCurve2D>
    
    Returns:
    a collection of continuous curves.
  - getReverseCurve
```
public PolyCurve2D<? extends ContinuousCurve2D> getReverseCurve()
```
    Description copied from interface: Curve2D
    
    Returns the curve with same trace on the plane with parametrization in reverse order.
    
    Specified by:
    
    getReverseCurve in interface ContinuousCurve2D
    
    Specified by:
    
    getReverseCurve in interface Curve2D
    
    Overrides:
    
    getReverseCurve in class CurveArray2D<T extends ContinuousCurve2D>
  - getSubCurve
```
public PolyCurve2D<? extends ContinuousCurve2D> getSubCurve(double t0,
                                                   double t1)
```
    Returns an instance of PolyCurve2D. If t0>t1 and curve is not closed, return a PolyCurve2D without curves inside.
    
    Specified by:
    
    getSubCurve in interface ContinuousCurve2D
    
    Specified by:
    
    getSubCurve in interface Curve2D
    
    Overrides:
    
    getSubCurve in class CurveArray2D<T extends ContinuousCurve2D>
    
    Parameters:
    t0 - position of the start of the sub-curve
    t1 - position of the end of the sub-curve
    
    Returns:
    the portion of original curve comprised between t0 and t1.
  - clip
```
public CurveSet2D<? extends ContinuousCurve2D> clip(Box2D box)
```
    Clip the PolyCurve2D by a box. The result is an instance of CurveSet2D, which contains only instances of ContinuousCurve2D. If the PolyCurve2D is not clipped, the result is an instance of CurveSet2D which contains 0 curves.
    
    Specified by:
    
    clip in interface ContinuousCurve2D
    
    Specified by:
    
    clip in interface Curve2D
    
    Specified by:
    
    clip in interface Shape2D
    
    Overrides:
    
    clip in class CurveArray2D<T extends ContinuousCurve2D>
    
    Parameters:
    box - the clipping box
    
    Returns:
    the clipped shape
  - transform
```
public PolyCurve2D<? extends ContinuousCurve2D> transform(AffineTransform2D trans)
```
    Description copied from class: CurveArray2D
    
    Transforms each curve, and build a new CurveArray2D with the set of transformed curves.
    
    Specified by:
    
    transform in interface ContinuousCurve2D
    
    Specified by:
    
    transform in interface Curve2D
    
    Specified by:
    
    transform in interface Shape2D
    
    Overrides:
    
    transform in class CurveArray2D<T extends ContinuousCurve2D>
    
    Parameters:
    trans - an affine transform
    
    Returns:
    the transformed shape
  - appendPath
```
public GeneralPath appendPath(GeneralPath path)
```
    Description copied from interface: ContinuousCurve2D
    
    Append the path of the curve to the given path.
    
    Specified by:
    
    appendPath in interface ContinuousCurve2D
    
    Parameters:
    path - a path to modify
    
    Returns:
    the modified path
  - getGeneralPath
```
public GeneralPath getGeneralPath()
```
    Overrides:
    
    getGeneralPath in class CurveArray2D<T extends ContinuousCurve2D>
  - draw
```
public void draw(Graphics2D g2)
```
    Description copied from interface: Curve2D
    
    Draws the curve on the given Graphics2D object.
    
    Specified by:
    
    draw in interface Curve2D
    
    Specified by:
    
    draw in interface Shape2D
    
    Overrides:
    
    draw in class CurveArray2D<T extends ContinuousCurve2D>
    
    Parameters:
    g2 - the graphics to draw the curve
  - equals
```
public boolean equals(Object obj)
```
    Description copied from class: CurveArray2D
    
    Returns true if obj is a CurveArray2D with the same number of curves, and such that each curve belongs to both objects.
    
    Overrides:
    
    equals in class CurveArray2D<T extends ContinuousCurve2D>

Class PolyCurve2D<T extends ContinuousCurve2D>

Field Summary

Fields inherited from class math.geom2d.curve.CurveSet2D

Fields inherited from interface math.geom2d.Shape2D

Constructor Summary

Method Summary

Methods inherited from class math.geom2d.curve.CurveArray2D

Methods inherited from class math.geom2d.curve.CurveSet2D

Methods inherited from class java.lang.Object

Methods inherited from interface math.geom2d.curve.Curve2D

Methods inherited from interface math.geom2d.Shape2D

Field Detail

closed

Constructor Detail

PolyCurve2D

PolyCurve2D

PolyCurve2D

PolyCurve2D

PolyCurve2D

PolyCurve2D

Method Detail

wrapCurve

setClosed

getLeftTangent

getRightTangent

isClosed

getAsPolyline

getSmoothPieces

getContinuousCurves

getReverseCurve

getSubCurve

clip

transform

appendPath

getGeneralPath

draw

equals