CubicCurve2D JDK 1.6)

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public Object clone ()

Creates a new object of the same class 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 getCtrlP1 ()

Returns the first control point.

publicabstract Point2D getCtrlP2 ()

Returns the second control point.

publicabstract double getCtrlX1 ()

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

publicabstract double getCtrlX2 ()

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

publicabstract double getCtrlY1 ()

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

publicabstract double getCtrlY2 ()

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

public double getFlatness ()

Returns the flatness of this curve.

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

Returns the flatness of the cubic curve specified by the control points stored in the indicated array at the indicated index.

Returns the flatness of the cubic curve specified
by the control points stored in the indicated array at the
indicated index. The flatness is the maximum distance
of a control point from the line connecting the end points.
Returns: the flatness of the CubicCurve2D specified by the coordinates in coords at the specified offset.
Parameters:
- coords - an array containing coordinates
- offset - the index of coords from which to begin getting the end points and control points of the curve
Since: 1.2

publicstatic double getFlatness (double x1, double y1, double ctrlx1, double ctrly1, double ctrlx2, double ctrly2, double x2, double y2)

Returns the flatness of the cubic curve specified by the indicated control points.

public double getFlatnessSq ()

Returns the square of the flatness of this curve.

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

Returns the square of the flatness of the cubic curve specified by the control points stored in the indicated array at the indicated index.

Returns the square of the flatness of the cubic curve specified
by the control points stored in the indicated array at the
indicated index. The flatness is the maximum distance
of a control point from the line connecting the end points.
Returns: the square of the flatness of the CubicCurve2D specified by the coordinates in coords at the specified offset.
Parameters:
- coords - an array containing coordinates
- offset - the index of coords from which to begin getting the end points and control points of the curve
Since: 1.2

publicstatic double getFlatnessSq (double x1, double y1, double ctrlx1, double ctrly1, double ctrlx2, double ctrly2, double x2, double y2)

Returns the square of the flatness of the cubic curve specified by the indicated control points.

publicabstract Point2D getP1 ()

Returns the start point.

publicabstract Point2D getP2 ()

Returns the end point.

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

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

Returns an iteration object that defines the boundary of the
shape.
The iterator for this class is not multi-threaded safe,
which means that this CubicCurve2D class does not
guarantee that modifications to the geometry of this
CubicCurve2D object do not affect any iterations of
that geometry that are already in process.
Returns: the PathIterator object that returns the geometry of the outline of this CubicCurve2D, one segment at a time.
Parameters:
- at - an optional AffineTransform to be applied to the coordinates as they are returned in the iteration, or null if untransformed coordinates are desired
Since: 1.2

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

Return an iteration object that defines the boundary of the flattened shape.

Return an iteration object that defines the boundary of the
flattened shape.
The iterator for this class is not multi-threaded safe,
which means that this CubicCurve2D class does not
guarantee that modifications to the geometry of this
CubicCurve2D object do not affect any iterations of
that geometry that are already in process.
Returns: the PathIterator object that returns the geometry of the outline of this CubicCurve2D, one segment at a time.
Parameters:
- at - an optional AffineTransform to be applied to the coordinates as they are returned in the iteration, or null if untransformed coordinates are desired
- flatness - the maximum amount that the control points for a given curve can vary from colinear before a subdivided 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 precision.

publicabstract double getX2 ()

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

publicabstract double getY1 ()

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

publicabstract double getY2 ()

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

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 (CubicCurve2D c)

Sets the location of the end points and control points of this curve to the same as those in the specified CubicCurve2D.

Sets the location of the end points and control points of this curve
to the same as those in the specified CubicCurve2D.
Parameters:
- c - the specified CubicCurve2D
Since: 1.2

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

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

Sets the location of the end points and control points of this curve
to the double coordinates at the specified offset in the specified
array.
Parameters:
- coords - a double array containing coordinates
- offset - the index of coords from which to begin setting the end points and control points of this curve to the coordinates contained in coords
Since: 1.2

publicabstract void setCurve (double x1, double y1, double ctrlx1, double ctrly1, double ctrlx2, double ctrly2, double x2, double y2)

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

public void setCurve (Point2D pts, int offset)

Sets the location of the end points and control points of this curve 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 curve
to the coordinates of the Point2D objects at the specified
offset in the specified array.
Parameters:
- pts - an array of Point2D objects
- offset - the index of pts from which to begin setting the end points and control points of this curve to the points contained in pts
Since: 1.2

public void setCurve (Point2D p1, Point2D cp1, Point2D cp2, Point2D p2)

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

Sets the location of the end points and control points of this curve
to the specified Point2D coordinates.
Parameters:
- p1 - the first specified Point2D used to set the start point of this curve
- cp1 - the second specified Point2D used to set the first control point of this curve
- cp2 - the third specified Point2D used to set the second control point of this curve
- p2 - the fourth specified Point2D used to set the end point of this curve
Since: 1.2

publicstatic int solveCubic (double[] eqn)

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


     eqn = {c, b, a, d}
     dx^3 + ax^2 + bx + c = 0

A return value of -1 is used to distinguish a constant equation
that 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 - an array containing coefficients for a cubic
Since: 1.2

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

Solve the cubic whose coefficients are in the eqn array and place the non-complex roots into the res array, returning the number of roots.

Solve the cubic whose coefficients are in the eqn
array and place the non-complex roots into the res
array, returning the number of roots.
The cubic solved is represented by the equation:
eqn = {c, b, a, d}
dx^3 + ax^2 + bx + c = 0
A return value of -1 is used to distinguish a constant equation,
which may be always 0 or never 0, from an equation which 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 cubic equation
- res - the array that contains the non-complex roots resulting from the solution of the cubic equation
Since: 1.3

public void subdivide (CubicCurve2D left, CubicCurve2D right)

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

publicstatic void subdivide (CubicCurve2D src, CubicCurve2D left, CubicCurve2D right)

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

Subdivides the cubic 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
may be the same as the src object or null.
Parameters:
- src - the cubic curve to be subdivided
- left - the cubic curve object for storing the left or first half of the subdivided curve
- right - the cubic curve object for storing the right or second half of the subdivided curve
Since: 1.2

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

Subdivides the cubic curve specified by the coordinates stored in the src array at indices srcoff through (srcoff + 7) and stores the resulting two subdivided curves into the two result arrays at the corresponding indices.

Subdivides the cubic curve specified by the coordinates
stored in the src array at indices srcoff
through (srcoff + 7) 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 may be null or a reference to the same array
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 as rightoff
equals (leftoff + 6), 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