public abstract class Path2D extends Object implements Shape, Cloneable
Path2D class provides a simple, yet flexible
 shape which represents an arbitrary geometric path.
 It can fully represent any path which can be iterated by the
 PathIterator interface including all of its segment
 types and winding rules and it implements all of the
 basic hit testing methods of the Shape interface.
 
 Use Path2D.Float when dealing with data that can be represented
 and used with floating point precision.  Use Path2D.Double
 for data that requires the accuracy or range of double precision.
 
 Path2D provides exactly those facilities required for
 basic construction and management of a geometric path and
 implementation of the above interfaces with little added
 interpretation.
 If it is useful to manipulate the interiors of closed
 geometric shapes beyond simple hit testing then the
 Area class provides additional capabilities
 specifically targeted at closed figures.
 While both classes nominally implement the Shape
 interface, they differ in purpose and together they provide
 two useful views of a geometric shape where Path2D
 deals primarily with a trajectory formed by path segments
 and Area deals more with interpretation and manipulation
 of enclosed regions of 2D geometric space.
 
 The PathIterator interface has more detailed descriptions
 of the types of segments that make up a path and the winding rules
 that control how to determine which regions are inside or outside
 the path.
| Modifier and Type | Class and Description | 
|---|---|
| static class  | Path2D.DoubleThe  Doubleclass defines a geometric path with
 coordinates stored in double precision floating point. | 
| static class  | Path2D.FloatThe  Floatclass defines a geometric path with
 coordinates stored in single precision floating point. | 
| Modifier and Type | Field and Description | 
|---|---|
| static int | WIND_EVEN_ODDAn even-odd winding rule for determining the interior of
 a path. | 
| static int | WIND_NON_ZEROA non-zero winding rule for determining the interior of a
 path. | 
| Modifier and Type | Method and Description | 
|---|---|
| abstract void | append(PathIterator pi,
      boolean connect)Appends the geometry of the specified
  PathIteratorobject
 to the path, possibly connecting the new geometry to the existing
 path segments with a line segment. | 
| void | append(Shape s,
      boolean connect)Appends the geometry of the specified  Shapeobject to the
 path, possibly connecting the new geometry to the existing path
 segments with a line segment. | 
| abstract Object | clone()Creates a new object of the same class as this object. | 
| void | closePath()Closes the current subpath by drawing a straight line back to
 the coordinates of the last  moveTo. | 
| boolean | contains(double x,
        double y)Tests if the specified coordinates are inside the boundary of the
  Shape, as described by the
 
 definition of insideness. | 
| boolean | contains(double x,
        double y,
        double w,
        double h)Tests if the interior of the  Shapeentirely contains
 the specified rectangular area. | 
| static boolean | contains(PathIterator pi,
        double x,
        double y)Tests if the specified coordinates are inside the closed
 boundary of the specified  PathIterator. | 
| static boolean | contains(PathIterator pi,
        double x,
        double y,
        double w,
        double h)Tests if the specified rectangular area is entirely inside the
 closed boundary of the specified  PathIterator. | 
| static boolean | contains(PathIterator pi,
        Point2D p)Tests if the specified  Point2Dis inside the closed
 boundary of the specifiedPathIterator. | 
| static boolean | contains(PathIterator pi,
        Rectangle2D r)Tests if the specified  Rectangle2Dis entirely inside the
 closed boundary of the specifiedPathIterator. | 
| boolean | contains(Point2D p)Tests if a specified  Point2Dis inside the boundary
 of theShape, as described by the
 
 definition of insideness. | 
| boolean | contains(Rectangle2D r)Tests if the interior of the  Shapeentirely contains the
 specifiedRectangle2D. | 
| Shape | createTransformedShape(AffineTransform at)Returns a new  Shaperepresenting a transformed version
 of thisPath2D. | 
| abstract void | curveTo(double x1,
       double y1,
       double x2,
       double y2,
       double x3,
       double y3)Adds a curved segment, defined by three new points, to the path by
 drawing a Bézier curve that intersects both the current
 coordinates and the specified coordinates  (x3,y3),
 using the specified points(x1,y1)and(x2,y2)as
 Bézier control points. | 
| Rectangle | getBounds()Returns an integer  Rectanglethat completely encloses theShape. | 
| Point2D | getCurrentPoint()Returns the coordinates most recently added to the end of the path
 as a  Point2Dobject. | 
| PathIterator | getPathIterator(AffineTransform at,
               double flatness)Returns an iterator object that iterates along the  Shapeboundary and provides access to a flattened view of theShapeoutline geometry. | 
| int | getWindingRule()Returns the fill style winding rule. | 
| boolean | intersects(double x,
          double y,
          double w,
          double h)Tests if the interior of the  Shapeintersects the
 interior of a specified rectangular area. | 
| static boolean | intersects(PathIterator pi,
          double x,
          double y,
          double w,
          double h)Tests if the interior of the specified  PathIteratorintersects the interior of a specified set of rectangular
 coordinates. | 
| static boolean | intersects(PathIterator pi,
          Rectangle2D r)Tests if the interior of the specified  PathIteratorintersects the interior of a specifiedRectangle2D. | 
| boolean | intersects(Rectangle2D r)Tests if the interior of the  Shapeintersects the
 interior of a specifiedRectangle2D. | 
| abstract void | lineTo(double x,
      double y)Adds a point to the path by drawing a straight line from the
 current coordinates to the new specified coordinates
 specified in double precision. | 
| abstract void | moveTo(double x,
      double y)Adds a point to the path by moving to the specified
 coordinates specified in double precision. | 
| abstract void | quadTo(double x1,
      double y1,
      double x2,
      double y2)Adds a curved segment, defined by two new points, to the path by
 drawing a Quadratic curve that intersects both the current
 coordinates and the specified coordinates  (x2,y2),
 using the specified point(x1,y1)as a quadratic
 parametric control point. | 
| void | reset()Resets the path to empty. | 
| void | setWindingRule(int rule)Sets the winding rule for this path to the specified value. | 
| abstract void | transform(AffineTransform at)Transforms the geometry of this path using the specified
  AffineTransform. | 
equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, waitgetBounds2D, getPathIteratorpublic static final int WIND_EVEN_ODD
PathIterator.WIND_EVEN_ODD, 
Constant Field Valuespublic static final int WIND_NON_ZERO
PathIterator.WIND_NON_ZERO, 
Constant Field Valuespublic abstract void moveTo(double x,
                            double y)
x - the specified X coordinatey - the specified Y coordinatepublic abstract void lineTo(double x,
                            double y)
x - the specified X coordinatey - the specified Y coordinatepublic abstract void quadTo(double x1,
                            double y1,
                            double x2,
                            double y2)
(x2,y2),
 using the specified point (x1,y1) as a quadratic
 parametric control point.
 All coordinates are specified in double precision.x1 - the X coordinate of the quadratic control pointy1 - the Y coordinate of the quadratic control pointx2 - the X coordinate of the final end pointy2 - the Y coordinate of the final end pointpublic abstract void curveTo(double x1,
                             double y1,
                             double x2,
                             double y2,
                             double x3,
                             double y3)
(x3,y3),
 using the specified points (x1,y1) and (x2,y2) as
 Bézier control points.
 All coordinates are specified in double precision.x1 - the X coordinate of the first Bézier control pointy1 - the Y coordinate of the first Bézier control pointx2 - the X coordinate of the second Bézier control pointy2 - the Y coordinate of the second Bézier control pointx3 - the X coordinate of the final end pointy3 - the Y coordinate of the final end pointpublic final void closePath()
moveTo.  If the path is already
 closed then this method has no effect.public final void append(Shape s, boolean connect)
Shape object to the
 path, possibly connecting the new geometry to the existing path
 segments with a line segment.
 If the connect parameter is true and the
 path is not empty then any initial moveTo in the
 geometry of the appended Shape
 is turned into a lineTo segment.
 If the destination coordinates of such a connecting lineTo
 segment match the ending coordinates of a currently open
 subpath then the segment is omitted as superfluous.
 The winding rule of the specified Shape is ignored
 and the appended geometry is governed by the winding
 rule specified for this path.s - the Shape whose geometry is appended
          to this pathconnect - a boolean to control whether or not to turn an initial
                moveTo segment into a lineTo segment
                to connect the new geometry to the existing pathpublic abstract void append(PathIterator pi, boolean connect)
PathIterator object
 to the path, possibly connecting the new geometry to the existing
 path segments with a line segment.
 If the connect parameter is true and the
 path is not empty then any initial moveTo in the
 geometry of the appended Shape is turned into a
 lineTo segment.
 If the destination coordinates of such a connecting lineTo
 segment match the ending coordinates of a currently open
 subpath then the segment is omitted as superfluous.
 The winding rule of the specified Shape is ignored
 and the appended geometry is governed by the winding
 rule specified for this path.pi - the PathIterator whose geometry is appended to
           this pathconnect - a boolean to control whether or not to turn an initial
                moveTo segment into a lineTo segment
                to connect the new geometry to the existing pathpublic final int getWindingRule()
WIND_EVEN_ODD, 
WIND_NON_ZERO, 
setWindingRule(int)public final void setWindingRule(int rule)
rule - an integer representing the specified
             winding ruleIllegalArgumentException - if
          rule is not either
          WIND_EVEN_ODD or
          WIND_NON_ZEROgetWindingRule()public final Point2D getCurrentPoint()
Point2D object.Point2D object containing the ending coordinates of
         the path or null if there are no points in the path.public final void reset()
public abstract void transform(AffineTransform at)
AffineTransform.
 The geometry is transformed in place, which permanently changes the
 boundary defined by this object.at - the AffineTransform used to transform the areapublic final Shape createTransformedShape(AffineTransform at)
Shape representing a transformed version
 of this Path2D.
 Note that the exact type and coordinate precision of the return
 value is not specified for this method.
 The method will return a Shape that contains no less precision
 for the transformed geometry than this Path2D currently
 maintains, but it may contain no more precision either.
 If the tradeoff of precision vs. storage size in the result is
 important then the convenience constructors in the
 Path2D.Float
 and
 Path2D.Double
 subclasses should be used to make the choice explicit.at - the AffineTransform used to transform a
           new Shape.Shape, transformed with the specified
         AffineTransform.public final Rectangle getBounds()
Rectangle that completely encloses the
 Shape.  Note that there is no guarantee that the
 returned Rectangle is the smallest bounding box that
 encloses the Shape, only that the Shape
 lies entirely within the indicated  Rectangle.  The
 returned Rectangle might also fail to completely
 enclose the Shape if the Shape overflows
 the limited range of the integer data type.  The
 getBounds2D method generally returns a
 tighter bounding box due to its greater flexibility in
 representation.
 
 Note that the 
 definition of insideness can lead to situations where points
 on the defining outline of the shape may not be considered
 contained in the returned bounds object, but only in cases
 where those points are also not considered contained in the original
 shape.
 
 If a point is inside the shape according to the
 contains(point) method, then
 it must be inside the returned Rectangle bounds object
 according to the contains(point)
 method of the bounds. Specifically:
 
  shape.contains(x,y) requires bounds.contains(x,y)
 
 If a point is not inside the shape, then it might
 still be contained in the bounds object:
 
  bounds.contains(x,y) does not imply shape.contains(x,y)
 
getBounds in interface ShapeRectangle that completely encloses
                 the Shape.Shape.getBounds2D()public static boolean contains(PathIterator pi, double x, double y)
PathIterator.
 
 This method provides a basic facility for implementors of
 the Shape interface to implement support for the
 Shape.contains(double, double) method.
pi - the specified PathIteratorx - the specified X coordinatey - the specified Y coordinatetrue if the specified coordinates are inside the
         specified PathIterator; false otherwisepublic static boolean contains(PathIterator pi, Point2D p)
Point2D is inside the closed
 boundary of the specified PathIterator.
 
 This method provides a basic facility for implementors of
 the Shape interface to implement support for the
 Shape.contains(Point2D) method.
pi - the specified PathIteratorp - the specified Point2Dtrue if the specified coordinates are inside the
         specified PathIterator; false otherwisepublic final boolean contains(double x,
                              double y)
Shape, as described by the
 
 definition of insideness.public final boolean contains(Point2D p)
Point2D is inside the boundary
 of the Shape, as described by the
 
 definition of insideness.public static boolean contains(PathIterator pi, double x, double y, double w, double h)
PathIterator.
 
 This method provides a basic facility for implementors of
 the Shape interface to implement support for the
 Shape.contains(double, double, double, double) method.
 
 This method object may conservatively return false in
 cases where the specified rectangular area intersects a
 segment of the path, but that segment does not represent a
 boundary between the interior and exterior of the path.
 Such segments could lie entirely within the interior of the
 path if they are part of a path with a WIND_NON_ZERO
 winding rule or if the segments are retraced in the reverse
 direction such that the two sets of segments cancel each
 other out without any exterior area falling between them.
 To determine whether segments represent true boundaries of
 the interior of the path would require extensive calculations
 involving all of the segments of the path and the winding
 rule and are thus beyond the scope of this implementation.
pi - the specified PathIteratorx - the specified X coordinatey - the specified Y coordinatew - the width of the specified rectangular areah - the height of the specified rectangular areatrue if the specified PathIterator contains
         the specified rectangular area; false otherwise.public static boolean contains(PathIterator pi, Rectangle2D r)
Rectangle2D is entirely inside the
 closed boundary of the specified PathIterator.
 
 This method provides a basic facility for implementors of
 the Shape interface to implement support for the
 Shape.contains(Rectangle2D) method.
 
 This method object may conservatively return false in
 cases where the specified rectangular area intersects a
 segment of the path, but that segment does not represent a
 boundary between the interior and exterior of the path.
 Such segments could lie entirely within the interior of the
 path if they are part of a path with a WIND_NON_ZERO
 winding rule or if the segments are retraced in the reverse
 direction such that the two sets of segments cancel each
 other out without any exterior area falling between them.
 To determine whether segments represent true boundaries of
 the interior of the path would require extensive calculations
 involving all of the segments of the path and the winding
 rule and are thus beyond the scope of this implementation.
pi - the specified PathIteratorr - a specified Rectangle2Dtrue if the specified PathIterator contains
         the specified Rectangle2D; false otherwise.public final boolean contains(double x,
                              double y,
                              double w,
                              double h)
Shape entirely contains
 the specified rectangular area.  All coordinates that lie inside
 the rectangular area must lie within the Shape for the
 entire rectangular area to be considered contained within the
 Shape.
 
 The Shape.contains() method allows a Shape
 implementation to conservatively return false when:
 
intersect method returns true and
 Shape entirely contains the rectangular area are
 prohibitively expensive.
 Shapes this method might
 return false even though the Shape contains
 the rectangular area.
 The Area class performs
 more accurate geometric computations than most
 Shape objects and therefore can be used if a more precise
 answer is required.
 
 This method object may conservatively return false in
 cases where the specified rectangular area intersects a
 segment of the path, but that segment does not represent a
 boundary between the interior and exterior of the path.
 Such segments could lie entirely within the interior of the
 path if they are part of a path with a WIND_NON_ZERO
 winding rule or if the segments are retraced in the reverse
 direction such that the two sets of segments cancel each
 other out without any exterior area falling between them.
 To determine whether segments represent true boundaries of
 the interior of the path would require extensive calculations
 involving all of the segments of the path and the winding
 rule and are thus beyond the scope of this implementation.
contains in interface Shapex - the X coordinate of the upper-left corner
          of the specified rectangular areay - the Y coordinate of the upper-left corner
          of the specified rectangular areaw - the width of the specified rectangular areah - the height of the specified rectangular areatrue if the interior of the Shape
          entirely contains the specified rectangular area;
          false otherwise or, if the Shape
          contains the rectangular area and the
          intersects method returns true
          and the containment calculations would be too expensive to
          perform.Area, 
Shape.intersects(double, double, double, double)public final boolean contains(Rectangle2D r)
Shape entirely contains the
 specified Rectangle2D.
 The Shape.contains() method allows a Shape
 implementation to conservatively return false when:
 intersect method returns true and
 Shape entirely contains the Rectangle2D
 are prohibitively expensive.
 Shapes this method might
 return false even though the Shape contains
 the Rectangle2D.
 The Area class performs
 more accurate geometric computations than most
 Shape objects and therefore can be used if a more precise
 answer is required.
 
 This method object may conservatively return false in
 cases where the specified rectangular area intersects a
 segment of the path, but that segment does not represent a
 boundary between the interior and exterior of the path.
 Such segments could lie entirely within the interior of the
 path if they are part of a path with a WIND_NON_ZERO
 winding rule or if the segments are retraced in the reverse
 direction such that the two sets of segments cancel each
 other out without any exterior area falling between them.
 To determine whether segments represent true boundaries of
 the interior of the path would require extensive calculations
 involving all of the segments of the path and the winding
 rule and are thus beyond the scope of this implementation.
contains in interface Shaper - The specified Rectangle2Dtrue if the interior of the Shape
          entirely contains the Rectangle2D;
          false otherwise or, if the Shape
          contains the Rectangle2D and the
          intersects method returns true
          and the containment calculations would be too expensive to
          perform.Shape.contains(double, double, double, double)public static boolean intersects(PathIterator pi, double x, double y, double w, double h)
PathIterator
 intersects the interior of a specified set of rectangular
 coordinates.
 
 This method provides a basic facility for implementors of
 the Shape interface to implement support for the
 Shape.intersects(double, double, double, double) method.
 
This method object may conservatively return true in cases where the specified rectangular area intersects a segment of the path, but that segment does not represent a boundary between the interior and exterior of the path. Such a case may occur if some set of segments of the path are retraced in the reverse direction such that the two sets of segments cancel each other out without any interior area between them. To determine whether segments represent true boundaries of the interior of the path would require extensive calculations involving all of the segments of the path and the winding rule and are thus beyond the scope of this implementation.
pi - the specified PathIteratorx - the specified X coordinatey - the specified Y coordinatew - the width of the specified rectangular coordinatesh - the height of the specified rectangular coordinatestrue if the specified PathIterator and
         the interior of the specified set of rectangular
         coordinates intersect each other; false otherwise.public static boolean intersects(PathIterator pi, Rectangle2D r)
PathIterator
 intersects the interior of a specified Rectangle2D.
 
 This method provides a basic facility for implementors of
 the Shape interface to implement support for the
 Shape.intersects(Rectangle2D) method.
 
This method object may conservatively return true in cases where the specified rectangular area intersects a segment of the path, but that segment does not represent a boundary between the interior and exterior of the path. Such a case may occur if some set of segments of the path are retraced in the reverse direction such that the two sets of segments cancel each other out without any interior area between them. To determine whether segments represent true boundaries of the interior of the path would require extensive calculations involving all of the segments of the path and the winding rule and are thus beyond the scope of this implementation.
pi - the specified PathIteratorr - the specified Rectangle2Dtrue if the specified PathIterator and
         the interior of the specified Rectangle2D
         intersect each other; false otherwise.public final boolean intersects(double x,
                                double y,
                                double w,
                                double h)
Shape intersects the
 interior of a specified rectangular area.
 The rectangular area is considered to intersect the Shape
 if any point is contained in both the interior of the
 Shape and the specified rectangular area.
 
 The Shape.intersects() method allows a Shape
 implementation to conservatively return true when:
 
Shape intersect, but
 Shapes this method might
 return true even though the rectangular area does not
 intersect the Shape.
 The Area class performs
 more accurate computations of geometric intersection than most
 Shape objects and therefore can be used if a more precise
 answer is required.
 This method object may conservatively return true in cases where the specified rectangular area intersects a segment of the path, but that segment does not represent a boundary between the interior and exterior of the path. Such a case may occur if some set of segments of the path are retraced in the reverse direction such that the two sets of segments cancel each other out without any interior area between them. To determine whether segments represent true boundaries of the interior of the path would require extensive calculations involving all of the segments of the path and the winding rule and are thus beyond the scope of this implementation.
intersects in interface Shapex - the X coordinate of the upper-left corner
          of the specified rectangular areay - the Y coordinate of the upper-left corner
          of the specified rectangular areaw - the width of the specified rectangular areah - the height of the specified rectangular areatrue if the interior of the Shape and
          the interior of the rectangular area intersect, or are
          both highly likely to intersect and intersection calculations
          would be too expensive to perform; false otherwise.Areapublic final boolean intersects(Rectangle2D r)
Shape intersects the
 interior of a specified Rectangle2D.
 The Shape.intersects() method allows a Shape
 implementation to conservatively return true when:
 Rectangle2D and the
 Shape intersect, but
 Shapes this method might
 return true even though the Rectangle2D does not
 intersect the Shape.
 The Area class performs
 more accurate computations of geometric intersection than most
 Shape objects and therefore can be used if a more precise
 answer is required.
 This method object may conservatively return true in cases where the specified rectangular area intersects a segment of the path, but that segment does not represent a boundary between the interior and exterior of the path. Such a case may occur if some set of segments of the path are retraced in the reverse direction such that the two sets of segments cancel each other out without any interior area between them. To determine whether segments represent true boundaries of the interior of the path would require extensive calculations involving all of the segments of the path and the winding rule and are thus beyond the scope of this implementation.
intersects in interface Shaper - the specified Rectangle2Dtrue if the interior of the Shape and
          the interior of the specified Rectangle2D
          intersect, or are both highly likely to intersect and intersection
          calculations would be too expensive to perform; false
          otherwise.Shape.intersects(double, double, double, double)public final PathIterator getPathIterator(AffineTransform at, double flatness)
Shape
 boundary and provides access to a flattened view of the
 Shape outline geometry.
 Only SEG_MOVETO, SEG_LINETO, and SEG_CLOSE point types are returned by the iterator.
 If an optional AffineTransform is specified,
 the coordinates returned in the iteration are transformed
 accordingly.
 
 The amount of subdivision of the curved segments is controlled
 by the flatness parameter, which specifies the
 maximum distance that any point on the unflattened transformed
 curve can deviate from the returned flattened path segments.
 Note that a limit on the accuracy of the flattened path might be
 silently imposed, causing very small flattening parameters to be
 treated as larger values.  This limit, if there is one, is
 defined by the particular implementation that is used.
 
 Each call to this method returns a fresh PathIterator
 object that traverses the Shape object geometry
 independently from any other PathIterator objects in use at
 the same time.
 
 It is recommended, but not guaranteed, that objects
 implementing the Shape interface isolate iterations
 that are in process from any changes that might occur to the original
 object's geometry during such iterations.
 
 The iterator for this class is not multi-threaded safe,
 which means that this Path2D class does not
 guarantee that modifications to the geometry of this
 Path2D object do not affect any iterations of
 that geometry that are already in process.
getPathIterator in interface Shapeat - an optional AffineTransform to be applied to the
          coordinates as they are returned in the iteration, or
          null if untransformed coordinates are desiredflatness - the maximum distance that the line segments used to
          approximate the curved segments are allowed to deviate
          from any point on the original curvePathIterator that independently traverses
         a flattened view of the geometry of the  Shape.public abstract Object clone()
clone in class ObjectOutOfMemoryError - if there is not enough memory.Cloneable Submit a bug or feature 
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