OpenJDK 27 · java.awt.geom.CubicCurve2D · APIdia, the JavaDoc alternative

Modifier and Type	Class and Description
public static class	CubicCurve2D.Double A cubic parametric curve segment specified with `double` coordinates.
public static class	CubicCurve2D.Float A cubic parametric curve segment specified with `float` coordinates.

Access	Constructor and Description
protected	CubicCurve2D() This is an abstract class that cannot be instantiated directly.

Method Summary

Modifier and Type	Method and Description
private static double	bisectRoot(double[] eqn, double x0, double xe)
private static double	bisectRootWithHint(double[] eqn, double x0, double xe, double hint)
public Object	Returns: a clone of this instance. clone() Overrides java.lang.Object.clone. Creates a new object of the same class as this object.
public boolean	contains(double x, double y) Implements java.awt.Shape.contains. Tests if the specified coordinates are inside the boundary of the `Shape`, as described by the definition of insideness.
public boolean	contains(Point2D p) Implements java.awt.Shape.contains. Tests if a specified `Point2D` is inside the boundary of the `Shape`, as described by the definition of insideness.
public boolean	contains(double x, double y, double w, double h) Implements java.awt.Shape.contains. Tests if the interior of the `Shape` entirely contains the specified rectangular area.
public boolean	contains(Rectangle2D r) Implements java.awt.Shape.contains. Tests if the interior of the `Shape` entirely contains the specified `Rectangle2D`.
private static int	fixRoots(double[] eqn, double[] res, int num)
public Rectangle	getBounds() Implements java.awt.Shape.getBounds. Returns an integer `Rectangle` that completely encloses the `Shape`.
public Rectangle2D	getBounds2D() Implements java.awt.Shape.getBounds2D. Returns a high precision and more accurate bounding box of the `Shape` than the `getBounds` method.
public abstract Point2D	Returns: a `Point2D` that is the first control point of the `CubicCurve2D`. getCtrlP1() Returns the first control point.
public abstract Point2D	Returns: a `Point2D` that is the second control point of the `CubicCurve2D`. getCtrlP2() Returns the second control point.
public abstract double	Returns: the X coordinate of the first control point of the `CubicCurve2D`. getCtrlX1() Returns the X coordinate of the first control point in double precision.
public abstract double	Returns: the X coordinate of the second control point of the `CubicCurve2D`. getCtrlX2() Returns the X coordinate of the second control point in double precision.
public abstract double	Returns: the Y coordinate of the first control point of the `CubicCurve2D`. getCtrlY1() Returns the Y coordinate of the first control point in double precision.
public abstract double	Returns: the Y coordinate of the second control point of the `CubicCurve2D`. getCtrlY2() Returns the Y coordinate of the second control point in double precision.
public static double	Returns: the flatness of the `CubicCurve2D` represented by the specified coordinates. getFlatness(double the X coordinate that specifies the start point of a `CubicCurve2D` x1, double the Y coordinate that specifies the start point of a `CubicCurve2D` y1, double the X coordinate that specifies the first control point of a `CubicCurve2D` ctrlx1, double the Y coordinate that specifies the first control point of a `CubicCurve2D` ctrly1, double the X coordinate that specifies the second control point of a `CubicCurve2D` ctrlx2, double the Y coordinate that specifies the second control point of a `CubicCurve2D` ctrly2, double the X coordinate that specifies the end point of a `CubicCurve2D` x2, double the Y coordinate that specifies the end point of a `CubicCurve2D` y2) Returns the flatness of the cubic curve specified by the indicated control points.
public static double	Returns: the flatness of the `CubicCurve2D` specified by the coordinates in `coords` at the specified offset. getFlatness(double[] an array containing coordinates coords, int the index of `coords` from which to begin getting the end points and control points of the curve offset) Returns the flatness of the cubic curve specified by the control points stored in the indicated array at the indicated index.
public double	Returns: the flatness of this curve. getFlatness() Returns the flatness of this curve.
public static double	Returns: the square of the flatness of the `CubicCurve2D` represented by the specified coordinates. getFlatnessSq(double the X coordinate that specifies the start point of a `CubicCurve2D` x1, double the Y coordinate that specifies the start point of a `CubicCurve2D` y1, double the X coordinate that specifies the first control point of a `CubicCurve2D` ctrlx1, double the Y coordinate that specifies the first control point of a `CubicCurve2D` ctrly1, double the X coordinate that specifies the second control point of a `CubicCurve2D` ctrlx2, double the Y coordinate that specifies the second control point of a `CubicCurve2D` ctrly2, double the X coordinate that specifies the end point of a `CubicCurve2D` x2, double the Y coordinate that specifies the end point of a `CubicCurve2D` y2) Returns the square of the flatness of the cubic curve specified by the indicated control points.
public static double	Returns: the square of the flatness of the `CubicCurve2D` specified by the coordinates in `coords` at the specified offset. getFlatnessSq(double[] an array containing coordinates coords, int the index of `coords` from which to begin getting the end points and control points of the curve 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.
public double	Returns: the square of the flatness of this curve. getFlatnessSq() Returns the square of the flatness of this curve.
public abstract Point2D	Returns: a `Point2D` that is the start point of the `CubicCurve2D`. getP1() Returns the start point.
public abstract Point2D	Returns: a `Point2D` that is the end point of the `CubicCurve2D`. getP2() Returns the end point.
public PathIterator	Returns: the `PathIterator` object that returns the geometry of the outline of this `CubicCurve2D`, one segment at a time. getPathIterator(AffineTransform an optional `AffineTransform` to be applied to the coordinates as they are returned in the iteration, or `null` if untransformed coordinates are desired at) Implements java.awt.Shape.getPathIterator. Returns an iteration object that defines the boundary of the shape.
public PathIterator	Returns: the `PathIterator` object that returns the geometry of the outline of this `CubicCurve2D`, one segment at a time. getPathIterator(AffineTransform an optional `AffineTransform` to be applied to the coordinates as they are returned in the iteration, or `null` if untransformed coordinates are desired at, double 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 flatness) Implements java.awt.Shape.getPathIterator. Return an iteration object that defines the boundary of the flattened shape.
private static double	getRootUpperBound(double[] eqn)
public abstract double	Returns: the X coordinate of the start point of the `CubicCurve2D`. getX1() Returns the X coordinate of the start point in double precision.
public abstract double	Returns: the X coordinate of the end point of the `CubicCurve2D`. getX2() Returns the X coordinate of the end point in double precision.
public abstract double	Returns: the Y coordinate of the start point of the `CubicCurve2D`. getY1() Returns the Y coordinate of the start point in double precision.
public abstract double	Returns: the Y coordinate of the end point of the `CubicCurve2D`. getY2() Returns the Y coordinate of the end point in double precision.
private static boolean	inInterval(double t, double min, double max)
public boolean	intersects(double x, double y, double w, double h) Implements java.awt.Shape.intersects. Tests if the interior of the `Shape` intersects the interior of a specified rectangular area.
public boolean	intersects(Rectangle2D r) Implements java.awt.Shape.intersects. Tests if the interior of the `Shape` intersects the interior of a specified `Rectangle2D`.
private static boolean	iszero(double x, double err)
private static boolean	oppositeSigns(double x1, double x2)
private int	rectCrossings(double x, double y, double w, double h)
private static double	refineRootWithHint(double[] eqn, double min, double max, double t)
public abstract void	setCurve(double the X coordinate used to set the start point of this `CubicCurve2D` x1, double the Y coordinate used to set the start point of this `CubicCurve2D` y1, double the X coordinate used to set the first control point of this `CubicCurve2D` ctrlx1, double the Y coordinate used to set the first control point of this `CubicCurve2D` ctrly1, double the X coordinate used to set the second control point of this `CubicCurve2D` ctrlx2, double the Y coordinate used to set the second control point of this `CubicCurve2D` ctrly2, double the X coordinate used to set the end point of this `CubicCurve2D` x2, double the Y coordinate used to set the end point of this `CubicCurve2D` y2) Sets the location of the end points and control points of this curve to the specified double coordinates.
public void	setCurve(double[] a double array containing coordinates coords, int the index of `coords` from which to begin setting the end points and control points of this curve to the coordinates contained in `coords` 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.
public void	setCurve(Point2D the first specified `Point2D` used to set the start point of this curve p1, Point2D the second specified `Point2D` used to set the first control point of this curve cp1, Point2D the third specified `Point2D` used to set the second control point of this curve cp2, Point2D the fourth specified `Point2D` used to set the end point of this curve p2) Sets the location of the end points and control points of this curve to the specified `Point2D` coordinates.
public void	setCurve(Point2D[] an array of `Point2D` objects pts, int the index of `pts` from which to begin setting the end points and control points of this curve to the points contained in `pts` 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.
public void	setCurve(CubicCurve2D the specified `CubicCurve2D` c) Sets the location of the end points and control points of this curve to the same as those in the specified `CubicCurve2D`.
public static int	Returns: the number of roots, or -1 if the equation is a constant. solveCubic(double[] an array containing coefficients for a cubic 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.
public static int	Returns: the number of roots, or -1 if the equation is a constant solveCubic(double[] the specified array of coefficients to use to solve the cubic equation eqn, double[] the array that contains the non-complex roots resulting from the solution of the cubic equation 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.
private static double	solveEqn(double[] eqn, int order, double t)
public void	subdivide(CubicCurve2D the cubic curve object for storing for the left or first half of the subdivided curve left, CubicCurve2D the cubic curve object for storing for the right or second half of the subdivided curve right) Subdivides this cubic curve and stores the resulting two subdivided curves into the left and right curve parameters.
public static void	subdivide(CubicCurve2D the cubic curve to be subdivided src, CubicCurve2D the cubic curve object for storing the left or first half of the subdivided curve left, CubicCurve2D the cubic curve object for storing the right or second half of the subdivided curve right) Subdivides the cubic curve specified by the `src` parameter and stores the resulting two subdivided curves into the `left` and `right` curve parameters.
public static void	subdivide(double[] the array holding the coordinates for the source curve src, int the offset into the array of the beginning of the the 6 source coordinates srcoff, double[] the array for storing the coordinates for the first half of the subdivided curve left, int the offset into the array of the beginning of the the 6 left coordinates leftoff, double[] the array for storing the coordinates for the second half of the subdivided curve right, int the offset into the array of the beginning of the the 6 right coordinates 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.
private static boolean	within(double x, double y, double err)

Inherited from java.lang.Object:: equals finalize getClass hashCode notify notifyAll toString wait wait wait

public abstract Class CubicCurve2D

Nested and Inner Type Summary

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