QuadCurve2D JDK 1.6)

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public Object clone ()

Creates a new object of the same class and with the same contents as this object.

public boolean contains (double x, double y) [Specified in Shape]

Tests if the specified coordinates are inside the boundary of the Shape.

Tests if the specified coordinates are inside the boundary of the
Shape.
Since: 1.2

public boolean contains (double x, double y, double w, double h) [Specified in Shape]

Tests if the interior of the Shape entirely contains the specified rectangular area.

Tests if the interior of the Shape entirely contains the specified rectangular area. All coordinates that lie inside the rectangular area must lie within the Shape for the entire rectanglar area to be considered contained within the Shape.

The Shape.contains() method allows a Shape implementation to conservatively return false when:

the intersect method returns true and
the calculations to determine whether or not the Shape entirely contains the rectangular area are prohibitively expensive.

This means that for some 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.
Since: 1.2

public boolean contains (Point2D p) [Specified in Shape]

Tests if a specified Point2D is inside the boundary of the Shape.

Tests if a specified Point2D is inside the boundary
of the Shape.
Since: 1.2

public boolean contains (Rectangle2D r) [Specified in Shape]

Tests if the interior of the Shape entirely contains the specified Rectangle2D.

Tests if the interior of the Shape entirely contains the
specified Rectangle2D.
The Shape.contains() method allows a Shape
implementation to conservatively return false when:

the intersect method returns true and
the calculations to determine whether or not the
Shape entirely contains the Rectangle2D
are prohibitively expensive.

This means that for some 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.
Since: 1.2

public Rectangle getBounds () [Specified in Shape]

Returns an integer Rectangle that completely encloses the Shape.

Returns an integer 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.
Since: 1.2

publicabstract Point2D getCtrlPt ()

Returns the control point.

Returns the control point.
Returns: a Point2D that is the control point of this Point2D.
Since: 1.2

publicabstract double getCtrlX ()

Returns the X coordinate of the control point in double precision.

Returns the X coordinate of the control point in
double precision.
Returns: X coordinate the control point
Since: 1.2

publicabstract double getCtrlY ()

Returns the Y coordinate of the control point in double precision.

Returns the Y coordinate of the control point in
double precision.
Returns: the Y coordinate of the control point.
Since: 1.2

public double getFlatness ()

Returns the flatness, or maximum distance of a control point from the line connecting the end points, of this QuadCurve2D.

Returns the flatness, or maximum distance of a
control point from the line connecting the end points, of this
QuadCurve2D.
Returns: the flatness of this QuadCurve2D.
Since: 1.2

publicstatic double getFlatness (double[] coords, int offset)

Returns the flatness, or maximum distance of a control point from the line connecting the end points, of the quadratic curve specified by the control points stored in the indicated array at the indicated index.

Returns the flatness, or maximum distance of a
control point from the line connecting the end points, of the
quadratic curve specified by the control points stored in the
indicated array at the indicated index.
Returns: the flatness of a quadratic curve defined by the specified array at the specified offset.
Parameters:
- coords - an array containing coordinate values
- offset - the index into coords from which to start getting the coordinate values
Since: 1.2

publicstatic double getFlatness (double x1, double y1, double ctrlx, double ctrly, double x2, double y2)

Returns the flatness, or maximum distance of a control point from the line connecting the end points, of the quadratic curve specified by the indicated control points.

public double getFlatnessSq ()

Returns the square of the flatness, or maximum distance of a control point from the line connecting the end points, of this QuadCurve2D.

Returns the square of the flatness, or maximum distance of a
control point from the line connecting the end points, of this
QuadCurve2D.
Returns: the square of the flatness of this QuadCurve2D.
Since: 1.2

publicstatic double getFlatnessSq (double[] coords, int offset)

Returns the square of the flatness, or maximum distance of a control point from the line connecting the end points, of the quadratic curve specified by the control points stored in the indicated array at the indicated index.

Returns the square of the flatness, or maximum distance of a
control point from the line connecting the end points, of the
quadratic curve specified by the control points stored in the
indicated array at the indicated index.
Returns: the flatness of the quadratic curve that is defined by the values in the specified array at the specified index.
Parameters:
- coords - an array containing coordinate values
- offset - the index into coords from which to to start getting the values from the array
Since: 1.2

publicstatic double getFlatnessSq (double x1, double y1, double ctrlx, double ctrly, double x2, double y2)

Returns the square of the flatness, or maximum distance of a control point from the line connecting the end points, of the quadratic curve specified by the indicated control points.

publicabstract Point2D getP1 ()

Returns the start point.

Returns the start point.
Returns: a Point2D that is the start point of this QuadCurve2D.
Since: 1.2

publicabstract Point2D getP2 ()

Returns the end point.

Returns the end point.
Returns: a Point object that is the end point of this Point2D.
Since: 1.2

public PathIterator getPathIterator (AffineTransform at) [Specified in Shape]

Returns an iteration object that defines the boundary of the shape of this QuadCurve2D.

Returns an iteration object that defines the boundary of the
shape of this QuadCurve2D.
The iterator for this class is not multi-threaded safe,
which means that this QuadCurve2D class does not
guarantee that modifications to the geometry of this
QuadCurve2D object do not affect any iterations of
that geometry that are already in process.
Returns: a {@link PathIterator} object that defines the boundary of the shape.
Parameters:
- at - an optional {@link AffineTransform} to apply to the shape boundary
Since: 1.2

public PathIterator getPathIterator (AffineTransform at, double flatness) [Specified in Shape]

Returns an iteration object that defines the boundary of the flattened shape of this QuadCurve2D.

Returns an iteration object that defines the boundary of the
flattened shape of this QuadCurve2D.
The iterator for this class is not multi-threaded safe,
which means that this QuadCurve2D class does not
guarantee that modifications to the geometry of this
QuadCurve2D object do not affect any iterations of
that geometry that are already in process.
Returns: a PathIterator object that defines the flattened boundary of the shape.
Parameters:
- at - an optional AffineTransform to apply to the boundary of the shape
- flatness - the maximum distance that the control points for a subdivided curve can be with respect to a line connecting the end points of this curve before this curve is replaced by a straight line connecting the end points.
Since: 1.2

publicabstract double getX1 ()

Returns the X coordinate of the start point in double in precision.

Returns the X coordinate of the start point in
double in precision.
Returns: the X coordinate of the start point.
Since: 1.2

publicabstract double getX2 ()

Returns the X coordinate of the end point in double precision.

Returns the X coordinate of the end point in
double precision.
Returns: the x coordiante of the end point.
Since: 1.2

publicabstract double getY1 ()

Returns the Y coordinate of the start point in double precision.

Returns the Y coordinate of the start point in
double precision.
Returns: the Y coordinate of the start point.
Since: 1.2

publicabstract double getY2 ()

Returns the Y coordinate of the end point in double precision.

Returns the Y coordinate of the end point in
double precision.
Returns: the Y coordinate of the end point.
Since: 1.2

public boolean intersects (double x, double y, double w, double h) [Specified in Shape]

Tests if the interior of the Shape intersects the interior of a specified rectangular area.

Tests if the interior of the 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:

there is a high probability that the rectangular area and the Shape intersect, but
the calculations to accurately determine this intersection are prohibitively expensive.

This means that for some 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.
Since: 1.2

public boolean intersects (Rectangle2D r) [Specified in Shape]

Tests if the interior of the Shape intersects the interior of a specified Rectangle2D.

Tests if the interior of the Shape intersects the
interior of a specified Rectangle2D.
The Shape.intersects() method allows a Shape
implementation to conservatively return true when:

there is a high probability that the Rectangle2D and the
Shape intersect, but
the calculations to accurately determine this intersection
are prohibitively expensive.

This means that for some 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.
Since: 1.2

public void setCurve (double[] coords, int offset)

Sets the location of the end points and control points of this QuadCurve2D to the double coordinates at the specified offset in the specified array.

Sets the location of the end points and control points of this
QuadCurve2D to the double coordinates at
the specified offset in the specified array.
Parameters:
- coords - the array containing coordinate values
- offset - the index into the array from which to start getting the coordinate values and assigning them to this QuadCurve2D
Since: 1.2

publicabstract void setCurve (double x1, double y1, double ctrlx, double ctrly, double x2, double y2)

Sets the location of the end points and control point of this curve to the specified double coordinates.

Sets the location of the end points and control point of this curve
to the specified double coordinates.
Parameters:
- x1 - the X coordinate of the start point
- y1 - the Y coordinate of the start point
- ctrlx - the X coordinate of the control point
- ctrly - the Y coordinate of the control point
- x2 - the X coordinate of the end point
- y2 - the Y coordinate of the end point
Since: 1.2

public void setCurve (Point2D pts, int offset)

Sets the location of the end points and control points of this QuadCurve2D to the coordinates of the Point2D objects at the specified offset in the specified array.

Sets the location of the end points and control points of this
QuadCurve2D to the coordinates of the
Point2D objects at the specified offset in
the specified array.
Parameters:
- pts - an array containing Point2D that define coordinate values
- offset - the index into pts from which to start getting the coordinate values and assigning them to this QuadCurve2D
Since: 1.2

public void setCurve (Point2D p1, Point2D cp, Point2D p2)

Sets the location of the end points and control point of this QuadCurve2D to the specified Point2D coordinates.

Sets the location of the end points and control point of this
QuadCurve2D to the specified Point2D
coordinates.
Parameters:
- p1 - the start point
- cp - the control point
- p2 - the end point
Since: 1.2

public void setCurve (QuadCurve2D c)

Sets the location of the end points and control point of this QuadCurve2D to the same as those in the specified QuadCurve2D.

Sets the location of the end points and control point of this
QuadCurve2D to the same as those in the specified
QuadCurve2D.
Parameters:
- c - the specified QuadCurve2D
Since: 1.2

publicstatic int solveQuadratic (double[] eqn)

Solves the quadratic whose coefficients are in the eqn array and places the non-complex roots back into the same array, returning the number of roots.

Solves the quadratic whose coefficients are in the eqn
array and places the non-complex roots back into the same array,
returning the number of roots. The quadratic solved is represented
by the equation:


     eqn = {C, B, A};
     ax^2 + bx + c = 0

A return value of -1 is used to distinguish a constant
equation, which might be always 0 or never 0, from an equation that
has no zeroes.
Returns: the number of roots, or -1 if the equation is a constant
Parameters:
- eqn - the array that contains the quadratic coefficients
Since: 1.2

publicstatic int solveQuadratic (double[] eqn, double[] res)

Solves the quadratic whose coefficients are in the eqn array and places the non-complex roots into the res array, returning the number of roots.

Solves the quadratic whose coefficients are in the eqn
array and places the non-complex roots into the res
array, returning the number of roots.
The quadratic solved is represented by the equation:


     eqn = {C, B, A};
     ax^2 + bx + c = 0

A return value of -1 is used to distinguish a constant
equation, which might be always 0 or never 0, from an equation that
has no zeroes.
Returns: the number of roots, or -1 if the equation is a constant.
Parameters:
- eqn - the specified array of coefficients to use to solve the quadratic equation
- res - the array that contains the non-complex roots resulting from the solution of the quadratic equation
Since: 1.3

publicstatic void subdivide (double[] src, int srcoff, double[] left, int leftoff, double[] right, int rightoff)

Subdivides the quadratic curve specified by the coordinates stored in the src array at indices srcoff through srcoff + 5 and stores the resulting two subdivided curves into the two result arrays at the corresponding indices.

Subdivides the quadratic curve specified by the coordinates
stored in the src array at indices
srcoff through srcoff + 5
and stores the resulting two subdivided curves into the two
result arrays at the corresponding indices.
Either or both of the left and right
arrays can be null or a reference to the same array
and offset as the src array.
Note that the last point in the first subdivided curve is the
same as the first point in the second subdivided curve. Thus,
it is possible to pass the same array for left and
right and to use offsets such that
rightoff equals leftoff + 4 in order
to avoid allocating extra storage for this common point.
Parameters:
- src - the array holding the coordinates for the source curve
- srcoff - the offset into the array of the beginning of the the 6 source coordinates
- left - the array for storing the coordinates for the first half of the subdivided curve
- leftoff - the offset into the array of the beginning of the the 6 left coordinates
- right - the array for storing the coordinates for the second half of the subdivided curve
- rightoff - the offset into the array of the beginning of the the 6 right coordinates
Since: 1.2

public void subdivide (QuadCurve2D left, QuadCurve2D right)

Subdivides this QuadCurve2D and stores the resulting two subdivided curves into the left and right curve parameters.

Subdivides this QuadCurve2D and stores the resulting
two subdivided curves into the left and
right curve parameters.
Either or both of the left and right
objects can be the same as this QuadCurve2D or
null.
Parameters:
- left - the QuadCurve2D object for storing the left or first half of the subdivided curve
- right - the QuadCurve2D object for storing the right or second half of the subdivided curve
Since: 1.2

publicstatic void subdivide (QuadCurve2D src, QuadCurve2D left, QuadCurve2D right)

Subdivides the quadratic curve specified by the src parameter and stores the resulting two subdivided curves into the left and right curve parameters.

Subdivides the quadratic curve specified by the src
parameter and stores the resulting two subdivided curves into the
left and right curve parameters.
Either or both of the left and right
objects can be the same as the src object or
null.
Parameters:
- src - the quadratic curve to be subdivided
- left - the QuadCurve2D object for storing the left or first half of the subdivided curve
- right - the QuadCurve2D object for storing the right or second half of the subdivided curve
Since: 1.2