- java.lang.Object
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- java.awt.geom.Path2D
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- java.awt.geom.Path2D.Double
 
 
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- All Implemented Interfaces:
- Shape,- Serializable,- Cloneable
 - Enclosing class:
- Path2D
 
 public static class Path2D.Double extends Path2D implements Serializable TheDoubleclass defines a geometric path with coordinates stored in double precision floating point.- Since:
- 1.6
- See Also:
- Serialized Form
 
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Nested Class Summary- 
Nested classes/interfaces declared in class java.awt.geom.Path2DPath2D.Double, Path2D.Float
 
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Field Summary- 
Fields declared in class java.awt.geom.Path2DWIND_EVEN_ODD, WIND_NON_ZERO
 
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Constructor SummaryConstructors Constructor Description Double()Constructs a new empty double precisionPath2Dobject with a default winding rule ofPath2D.WIND_NON_ZERO.Double(int rule)Constructs a new empty double precisionPath2Dobject with the specified winding rule to control operations that require the interior of the path to be defined.Double(int rule, int initialCapacity)Constructs a new empty double precisionPath2Dobject with the specified winding rule and the specified initial capacity to store path segments.Double(Shape s)Constructs a new double precisionPath2Dobject from an arbitraryShapeobject.Double(Shape s, AffineTransform at)Constructs a new double precisionPath2Dobject from an arbitraryShapeobject, transformed by anAffineTransformobject.
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Method SummaryAll Methods Instance Methods Concrete Methods Modifier and Type Method Description voidappend(PathIterator pi, boolean connect)Appends the geometry of the specifiedPathIteratorobject to the path, possibly connecting the new geometry to the existing path segments with a line segment.Objectclone()Creates a new object of the same class as this object.voidcurveTo(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.Rectangle2DgetBounds2D()Returns a high precision and more accurate bounding box of theShapethan thegetBoundsmethod.PathIteratorgetPathIterator(AffineTransform at)Returns an iterator object that iterates along theShapeboundary and provides access to the geometry of theShapeoutline.voidlineTo(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.voidmoveTo(double x, double y)Adds a point to the path by moving to the specified coordinates specified in double precision.voidquadTo(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.voidtransform(AffineTransform at)Transforms the geometry of this path using the specifiedAffineTransform.- 
Methods declared in class java.awt.geom.Path2Dappend, closePath, contains, contains, contains, contains, contains, contains, contains, contains, createTransformedShape, getBounds, getCurrentPoint, getPathIterator, getWindingRule, intersects, intersects, intersects, intersects, reset, setWindingRule, trimToSize
 
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Constructor Detail- 
Doublepublic Double() Constructs a new empty double precisionPath2Dobject with a default winding rule ofPath2D.WIND_NON_ZERO.- Since:
- 1.6
 
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Doublepublic Double(int rule) Constructs a new empty double precisionPath2Dobject with the specified winding rule to control operations that require the interior of the path to be defined.- Parameters:
- rule- the winding rule
- Since:
- 1.6
- See Also:
- Path2D.WIND_EVEN_ODD,- Path2D.WIND_NON_ZERO
 
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Doublepublic Double(int rule, int initialCapacity)Constructs a new empty double precisionPath2Dobject with the specified winding rule and the specified initial capacity to store path segments. This number is an initial guess as to how many path segments are in the path, but the storage is expanded as needed to store whatever path segments are added to this path.- Parameters:
- rule- the winding rule
- initialCapacity- the estimate for the number of path segments in the path
- Since:
- 1.6
- See Also:
- Path2D.WIND_EVEN_ODD,- Path2D.WIND_NON_ZERO
 
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Doublepublic Double(Shape s) Constructs a new double precisionPath2Dobject from an arbitraryShapeobject. All of the initial geometry and the winding rule for this path are taken from the specifiedShapeobject.- Parameters:
- s- the specified- Shapeobject
- Since:
- 1.6
 
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Doublepublic Double(Shape s, AffineTransform at) Constructs a new double precisionPath2Dobject from an arbitraryShapeobject, transformed by anAffineTransformobject. All of the initial geometry and the winding rule for this path are taken from the specifiedShapeobject and transformed by the specifiedAffineTransformobject.- Parameters:
- s- the specified- Shapeobject
- at- the specified- AffineTransformobject
- Since:
- 1.6
 
 
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Method Detail- 
moveTopublic final void moveTo(double x, double y)Adds a point to the path by moving to the specified coordinates specified in double precision.
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lineTopublic final 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.
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quadTopublic final 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. All coordinates are specified in double precision.
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curveTopublic final 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. All coordinates are specified in double precision.- Specified by:
- curveToin class- Path2D
- Parameters:
- x1- the X coordinate of the first Bézier control point
- y1- the Y coordinate of the first Bézier control point
- x2- the X coordinate of the second Bézier control point
- y2- the Y coordinate of the second Bézier control point
- x3- the X coordinate of the final end point
- y3- the Y coordinate of the final end point
- Since:
- 1.6
 
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appendpublic final void append(PathIterator pi, boolean connect) Appends the geometry of the specifiedPathIteratorobject to the path, possibly connecting the new geometry to the existing path segments with a line segment. If theconnectparameter istrueand the path is not empty then any initialmoveToin the geometry of the appendedShapeis turned into alineTosegment. If the destination coordinates of such a connectinglineTosegment match the ending coordinates of a currently open subpath then the segment is omitted as superfluous. The winding rule of the specifiedShapeis ignored and the appended geometry is governed by the winding rule specified for this path.
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transformpublic final void transform(AffineTransform at) Transforms the geometry of this path using the specifiedAffineTransform. The geometry is transformed in place, which permanently changes the boundary defined by this object.
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getBounds2Dpublic final Rectangle2D getBounds2D() Returns a high precision and more accurate bounding box of theShapethan thegetBoundsmethod. Note that there is no guarantee that the returnedRectangle2Dis the smallest bounding box that encloses theShape, only that theShapelies entirely within the indicatedRectangle2D. The bounding box returned by this method is usually tighter than that returned by thegetBoundsmethod and never fails due to overflow problems since the return value can be an instance of theRectangle2Dthat uses double precision values to store the dimensions.Note that the definition of insideness can lead to situations where points on the defining outline of the shapemay not be considered contained in the returnedboundsobject, but only in cases where those points are also not considered contained in the originalshape.If a pointis inside theshapeaccording to thecontains(point)method, then it must be inside the returnedRectangle2Dbounds object according to thecontains(point)method of thebounds. Specifically:shape.contains(p)requiresbounds.contains(p)If a pointis not inside theshape, then it might still be contained in theboundsobject:bounds.contains(p)does not implyshape.contains(p)- Specified by:
- getBounds2Din interface- Shape
- Returns:
- an instance of Rectangle2Dthat is a high-precision bounding box of theShape.
- Since:
- 1.6
- See Also:
- Shape.getBounds()
 
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getPathIteratorpublic final PathIterator getPathIterator(AffineTransform at) Returns an iterator object that iterates along theShapeboundary and provides access to the geometry of theShapeoutline. If an optionalAffineTransformis specified, the coordinates returned in the iteration are transformed accordingly.Each call to this method returns a fresh PathIteratorobject that traverses the geometry of theShapeobject independently from any otherPathIteratorobjects in use at the same time.It is recommended, but not guaranteed, that objects implementing the Shapeinterface 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 the Path2Dclass does not guarantee that modifications to the geometry of thisPath2Dobject do not affect any iterations of that geometry that are already in process.- Specified by:
- getPathIteratorin interface- Shape
- Parameters:
- at- an- AffineTransform
- Returns:
- a new PathIteratorthat iterates along the boundary of thisShapeand provides access to the geometry of thisShape's outline
- Since:
- 1.6
 
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clonepublic final Object clone() Creates a new object of the same class as this object.- Specified by:
- clonein class- Path2D
- Returns:
- a clone of this instance.
- Throws:
- OutOfMemoryError- if there is not enough memory.
- Since:
- 1.6
- See Also:
- Cloneable
 
 
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