java.lang.Object
java.awt.geom.Line2D
java.awt.geom.Line2D.Double
- All Implemented Interfaces:
Shape
,Serializable
,Cloneable
- Enclosing class:
- Line2D
public static class Line2D.Double extends Line2D implements Serializable
A line segment specified with double coordinates.
- Since:
- 1.2
- See Also:
- Serialized Form
-
Nested Class Summary
Nested classes/interfaces declared in class java.awt.geom.Line2D
Line2D.Double, Line2D.Float
-
Field Summary
Fields Modifier and Type Field Description double
x1
The X coordinate of the start point of the line segment.double
x2
The X coordinate of the end point of the line segment.double
y1
The Y coordinate of the start point of the line segment.double
y2
The Y coordinate of the end point of the line segment. -
Constructor Summary
Constructors Constructor Description Double()
Constructs and initializes a Line with coordinates (0, 0) → (0, 0).Double(double x1, double y1, double x2, double y2)
Constructs and initializes aLine2D
from the specified coordinates.Double(Point2D p1, Point2D p2)
Constructs and initializes aLine2D
from the specifiedPoint2D
objects. -
Method Summary
Modifier and Type Method Description Rectangle2D
getBounds2D()
Returns a high precision and more accurate bounding box of theShape
than thegetBounds
method.Point2D
getP1()
Returns the startPoint2D
of thisLine2D
.Point2D
getP2()
Returns the endPoint2D
of thisLine2D
.double
getX1()
Returns the X coordinate of the start point in double precision.double
getX2()
Returns the X coordinate of the end point in double precision.double
getY1()
Returns the Y coordinate of the start point in double precision.double
getY2()
Returns the Y coordinate of the end point in double precision.void
setLine(double x1, double y1, double x2, double y2)
Sets the location of the end points of thisLine2D
to the specified double coordinates.Methods declared in class java.awt.geom.Line2D
clone, contains, contains, contains, contains, getBounds, getPathIterator, getPathIterator, intersects, intersects, intersectsLine, intersectsLine, linesIntersect, ptLineDist, ptLineDist, ptLineDist, ptLineDistSq, ptLineDistSq, ptLineDistSq, ptSegDist, ptSegDist, ptSegDist, ptSegDistSq, ptSegDistSq, ptSegDistSq, relativeCCW, relativeCCW, relativeCCW, setLine, setLine
-
Field Details
-
x1
public double x1The X coordinate of the start point of the line segment.- Since:
- 1.2
-
y1
public double y1The Y coordinate of the start point of the line segment.- Since:
- 1.2
-
x2
public double x2The X coordinate of the end point of the line segment.- Since:
- 1.2
-
y2
public double y2The Y coordinate of the end point of the line segment.- Since:
- 1.2
-
-
Constructor Details
-
Double
public Double()Constructs and initializes a Line with coordinates (0, 0) → (0, 0).- Since:
- 1.2
-
Double
public Double(double x1, double y1, double x2, double y2)Constructs and initializes aLine2D
from the specified coordinates.- Parameters:
x1
- the X coordinate of the start pointy1
- the Y coordinate of the start pointx2
- the X coordinate of the end pointy2
- the Y coordinate of the end point- Since:
- 1.2
-
Double
Constructs and initializes aLine2D
from the specifiedPoint2D
objects.- Parameters:
p1
- the startPoint2D
of this line segmentp2
- the endPoint2D
of this line segment- Since:
- 1.2
-
-
Method Details
-
getX1
public double getX1()Returns the X coordinate of the start point in double precision. -
getY1
public double getY1()Returns the Y coordinate of the start point in double precision. -
getP1
Returns the startPoint2D
of thisLine2D
. -
getX2
public double getX2()Returns the X coordinate of the end point in double precision. -
getY2
public double getY2()Returns the Y coordinate of the end point in double precision. -
getP2
Returns the endPoint2D
of thisLine2D
. -
setLine
public void setLine(double x1, double y1, double x2, double y2)Sets the location of the end points of thisLine2D
to the specified double coordinates. -
getBounds2D
Returns a high precision and more accurate bounding box of theShape
than thegetBounds
method. Note that there is no guarantee that the returnedRectangle2D
is the smallest bounding box that encloses theShape
, only that theShape
lies entirely within the indicatedRectangle2D
. The bounding box returned by this method is usually tighter than that returned by thegetBounds
method and never fails due to overflow problems since the return value can be an instance of theRectangle2D
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 returnedbounds
object, but only in cases where those points are also not considered contained in the originalshape
.If a
point
is inside theshape
according to thecontains(point)
method, then it must be inside the returnedRectangle2D
bounds object according to thecontains(point)
method of thebounds
. Specifically:shape.contains(p)
requiresbounds.contains(p)
If a
point
is not inside theshape
, then it might still be contained in thebounds
object:bounds.contains(p)
does not implyshape.contains(p)
- Specified by:
getBounds2D
in interfaceShape
- Returns:
- an instance of
Rectangle2D
that is a high-precision bounding box of theShape
. - Since:
- 1.2
- See Also:
Shape.getBounds()
-