Shape, Serializable, Cloneable
Path2D
The Double class defines a geometric path with coordinates stored in double precision floating point.
Constructors
Constructs a new empty double precision
Path2D
object with a default winding rule of
Path2D.WIND_NON_ZERO
.
Constructs a new empty double precision Path2D object 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 precision Path2D object with the specified winding rule and the specified initial capacity to store path segments.
Constructs a new double precision
Path2D
object from an arbitrary
Shape
object.
Constructs a new double precision
Path2D
object from an arbitrary
Shape
object, transformed by an
AffineTransform
object.
final void
Appends the geometry of the specified
PathIterator
object to the path, possibly connecting the new geometry to the existing path segments with a line segment.
Creates a new object of the same class as this object.
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.
Returns a high precision and more accurate bounding box of the Shape than the getBounds method.
Returns an iterator object that iterates along the Shape boundary and provides access to the geometry of the Shape outline.
final void
Adds a point to the path by drawing a straight line from the current coordinates to the new specified coordinates specified in double precision.
final void
Adds a point to the path by moving to the specified coordinates specified in double precision.
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.
final void
final void
Trims the capacity of this Path2D instance to its current size.
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, setWindingRulepublic Double()
Constructs a new empty double precision
Path2D
object with a default winding rule of
Path2D.WIND_NON_ZERO
.
public Double(int rule)
Constructs a new empty double precision Path2D object with the specified winding rule to control operations that require the interior of the path to be defined.
rule - the winding rule
IllegalArgumentException - if rule is not either Path2D.WIND_EVEN_ODD or Path2D.WIND_NON_ZERO
public Double(int rule, int initialCapacity)
Constructs a new empty double precision Path2D object 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.
rule - the winding rule
initialCapacity - the estimate for the number of path segments in the path
IllegalArgumentException - if rule is not either Path2D.WIND_EVEN_ODD or Path2D.WIND_NON_ZERO
NegativeArraySizeException - if initialCapacity is negative
Constructs a new double precision
Path2D
object from an arbitrary
Shape
object. All of the initial geometry and the winding rule for this path are taken from the specified
Shape
object.
s - the specified Shape object
NullPointerException - if s is null
Constructs a new double precision
Path2D
object from an arbitrary
Shape
object, transformed by an
AffineTransform
object. All of the initial geometry and the winding rule for this path are taken from the specified
Shape
object and transformed by the specified
AffineTransform
object.
s - the specified Shape object
at - the specified AffineTransform object
NullPointerException - if s is null
public final void trimToSize()
Description copied from class:Path2D
Trims the capacity of this Path2D instance to its current size. An application can use this operation to minimize the storage of a path.
trimToSize in class Path2D
public final void moveTo(double x, double y)
Adds a point to the path by moving to the specified coordinates specified in double precision.
public 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.
public 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.
public 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.
curveTo in class Path2D
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
Appends the geometry of the specified
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.
Transforms the geometry of this path using the specified
AffineTransform
. The geometry is transformed in place, which permanently changes the boundary defined by this object.
Returns a high precision and more accurate bounding box of the
Shape
than the
getBounds
method. Note that there is no guarantee that the returned
Rectangle2D
is the smallest bounding box that encloses the
Shape
, only that the
Shape
lies entirely within the indicated
Rectangle2D
. The bounding box returned by this method is usually tighter than that returned by the
getBounds
method and never fails due to overflow problems since the return value can be an instance of the
Rectangle2D
that 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 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 Rectangle2D bounds object according to the contains(point) method of the bounds. Specifically:
shape.contains(p) requires bounds.contains(p)
If a point is not inside the shape, then it might still be contained in the bounds object:
bounds.contains(p) does not imply shape.contains(p)
getBounds2D in interface Shape
Rectangle2D that is a high-precision bounding box of the Shape.
Returns an iterator object that iterates along the
Shape
boundary and provides access to the geometry of the
Shape
outline. If an optional
AffineTransform
is specified, the coordinates returned in the iteration are transformed accordingly.
Each call to this method returns a fresh PathIterator object that traverses the geometry of the Shape object 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 the 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 Shape
at - an AffineTransform
PathIterator that iterates along the boundary of this Shape and provides access to the geometry of this Shape's outline
Creates a new object of the same class as this object.
clone in class Path2D
OutOfMemoryError - if there is not enough memory.
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