OpenJDK 1.22 · java.awt.geom.QuadCurve2D

Modifier and Type	Class and Description
public static class	QuadCurve2D.Double A quadratic parametric curve segment specified with `double` coordinates.
public static class	QuadCurve2D.Float A quadratic parametric curve segment specified with `float` coordinates.

Modifier and Type	Field and Description
private static final int	ABOVE
private static final int	BELOW
private static final int	HIGHEDGE
private static final int	INSIDE
private static final int	LOWEDGE

Access	Constructor and Description
protected	QuadCurve2D() This is an abstract class that cannot be instantiated directly.

Method Summary

Modifier and Type	Method and Description
public Object	Returns: a clone of this instance. clone() Overrides java.lang.Object.clone. Creates a new object of the same class and with the same contents as this object.
public boolean	contains(double the specified X coordinate to be tested x, double the specified Y coordinate to be tested 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 the specified `Point2D` to be tested 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 the X coordinate of the upper-left corner of the specified rectangular area x, double the Y coordinate of the upper-left corner of the specified rectangular area y, double the width of the specified rectangular area w, double the height of the specified rectangular area h) Implements java.awt.Shape.contains. Tests if the interior of the `Shape` entirely contains the specified rectangular area.
public boolean	contains(Rectangle2D The specified `Rectangle2D` r) Implements java.awt.Shape.contains. Tests if the interior of the `Shape` entirely contains the specified `Rectangle2D`.
private static int	evalQuadratic(double[] vals, int num, boolean include0, boolean include1, double[] inflect, double c1, double ctrl, double c2) Evaluate the t values in the first num slots of the vals[] array and place the evaluated values back into the same array.
private static void	fillEqn(double[] eqn, double val, double c1, double cp, double c2) Fill an array with the coefficients of the parametric equation in t, ready for solving against val with solveQuadratic.
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 control point of this `Point2D`. getCtrlPt() Returns the control point.
public abstract double	Returns: X coordinate the control point getCtrlX() Returns the X coordinate of the control point in `double` precision.
public abstract double	Returns: the Y coordinate of the control point. getCtrlY() Returns the Y coordinate of the control point in `double` precision.
public static double	Returns: the flatness of the quadratic curve defined by the specified coordinates. getFlatness(double the X coordinate of the start point x1, double the Y coordinate of the start point y1, double the X coordinate of the control point ctrlx, double the Y coordinate of the control point ctrly, double the X coordinate of the end point x2, double the Y coordinate of the end point 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 static double	Returns: the flatness of a quadratic curve defined by the specified array at the specified offset. getFlatness(double[] an array containing coordinate values coords, int the index into `coords` from which to start getting the coordinate values 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.
public double	Returns: the flatness of this `QuadCurve2D`. getFlatness() Returns the flatness, or maximum distance of a control point from the line connecting the end points, of this `QuadCurve2D`.
public static double	Returns: the square of the flatness of the quadratic curve defined by the specified coordinates. getFlatnessSq(double the X coordinate of the start point x1, double the Y coordinate of the start point y1, double the X coordinate of the control point ctrlx, double the Y coordinate of the control point ctrly, double the X coordinate of the end point x2, double the Y coordinate of the end point 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.
public static double	Returns: the flatness of the quadratic curve that is defined by the values in the specified array at the specified index. getFlatnessSq(double[] an array containing coordinate values coords, int the index into `coords` from which to to start getting the values from the array 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.
public double	Returns: the square of the flatness of this `QuadCurve2D`. getFlatnessSq() Returns the square of the flatness, or maximum distance of a control point from the line connecting the end points, of this `QuadCurve2D`.
public abstract Point2D	Returns: a `Point2D` that is the start point of this `QuadCurve2D`. getP1() Returns the start point.
public abstract Point2D	Returns: a `Point` object that is the end point of this `Point2D`. getP2() Returns the end point.
public PathIterator	Returns: a `PathIterator` object that defines the boundary of the shape. getPathIterator(AffineTransform an optional `AffineTransform` to apply to the shape boundary at) Implements java.awt.Shape.getPathIterator. Returns an iteration object that defines the boundary of the shape of this `QuadCurve2D`.
public PathIterator	Returns: a `PathIterator` object that defines the flattened boundary of the shape. getPathIterator(AffineTransform an optional `AffineTransform` to apply to the boundary of the shape at, double 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. flatness) Implements java.awt.Shape.getPathIterator. Returns an iteration object that defines the boundary of the flattened shape of this `QuadCurve2D`.
private static int	getTag(double coord, double low, double high) Determine where coord lies with respect to the range from low to high.
public abstract double	Returns: the X coordinate of the start point. getX1() Returns the X coordinate of the start point in `double` in precision.
public abstract double	Returns: the x coordinate of the end point. getX2() Returns the X coordinate of the end point in `double` precision.
public abstract double	Returns: the Y coordinate of the start point. getY1() Returns the Y coordinate of the start point in `double` precision.
public abstract double	Returns: the Y coordinate of the end point. getY2() Returns the Y coordinate of the end point in `double` precision.
public boolean	intersects(double the X coordinate of the upper-left corner of the specified rectangular area x, double the Y coordinate of the upper-left corner of the specified rectangular area y, double the width of the specified rectangular area w, double the height of the specified rectangular area 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 the specified `Rectangle2D` r) Implements java.awt.Shape.intersects. Tests if the interior of the `Shape` intersects the interior of a specified `Rectangle2D`.
private static boolean	inwards(int pttag, int opt1tag, int opt2tag) Determine if the pttag represents a coordinate that is already in its test range, or is on the border with either of the two opttags representing another coordinate that is "towards the inside" of that test range.
public abstract void	setCurve(double the X coordinate of the start point x1, double the Y coordinate of the start point y1, double the X coordinate of the control point ctrlx, double the Y coordinate of the control point ctrly, double the X coordinate of the end point x2, double the Y coordinate of the end point y2) Sets the location of the end points and control point of this curve to the specified `double` coordinates.
public void	setCurve(double[] the array containing coordinate values coords, int the index into the array from which to start getting the coordinate values and assigning them to this `QuadCurve2D` 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.
public void	setCurve(Point2D the start point p1, Point2D the control point cp, Point2D the end point p2) Sets the location of the end points and control point of this `QuadCurve2D` to the specified `Point2D` coordinates.
public void	setCurve(Point2D[] an array containing `Point2D` that define coordinate values pts, int the index into `pts` from which to start getting the coordinate values and assigning them to this `QuadCurve2D` 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.
public void	setCurve(QuadCurve2D the specified `QuadCurve2D` c) Sets the location of the end points and control point of this `QuadCurve2D` to the same as those in the specified `QuadCurve2D`.
public static int	Returns: the number of roots, or `-1` if the equation is a constant solveQuadratic(double[] the array that contains the quadratic coefficients 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.
public static int	Returns: the number of roots, or `-1` if the equation is a constant. solveQuadratic(double[] the specified array of coefficients to use to solve the quadratic equation eqn, double[] the array that contains the non-complex roots resulting from the solution of the quadratic equation 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.
public void	subdivide(QuadCurve2D the `QuadCurve2D` object for storing the left or first half of the subdivided curve left, QuadCurve2D the `QuadCurve2D` object for storing the right or second half of the subdivided curve right) Subdivides this `QuadCurve2D` and stores the resulting two subdivided curves into the `left` and `right` curve parameters.
public static void	subdivide(QuadCurve2D the quadratic curve to be subdivided src, QuadCurve2D the `QuadCurve2D` object for storing the left or first half of the subdivided curve left, QuadCurve2D the `QuadCurve2D` object for storing the right or second half of the subdivided curve right) Subdivides the quadratic 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 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.

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

public abstract Class QuadCurve2D

Nested and Inner Type Summary

Field Summary

Constructor Summary

Method Summary