java.awt.geom

Class CubicCurve2D.Double

public static class CubicCurve2D.Double extends CubicCurve2D

A two-dimensional curve that is parameterized with a cubic function and stores coordinate values in double-precision floating-point format.

See Also:

Field Summary
double	ctrlx1 The x coordinate of the curve’s first control point.
double	ctrlx2 The x coordinate of the curve’s second control point.
double	ctrly1 The y coordinate of the curve’s first control point.
double	ctrly2 The y coordinate of the curve’s second control point.
double	x1 The x coordinate of the curve’s start point.
double	x2 The x coordinate of the curve’s end point.
double	y1 The y coordinate of the curve’s start point.
double	y2 The y coordinate of the curve’s end point.

Constructor Summary
	Double() Constructs a new CubicCurve2D that stores its coordinate values in double-precision floating-point format.
	Double(double x1, double y1, double cx1, double cy1, double cx2, double cy2, double x2, double y2) Constructs a new CubicCurve2D that stores its coordinate values in double-precision floating-point format, specifying the initial position of each point.

Method Summary
Rectangle2D	getBounds2D() Determines the smallest rectangle that encloses the curve’s start, end and control points.
Point2D	getCtrlP1() Returns the curve’s first control point.
Point2D	getCtrlP2() Returns the curve’s second control point.
double	getCtrlX1() Returns the x coordinate of the curve’s first control point.
double	getCtrlX2() Returns the x coordinate of the curve’s second control point.
double	getCtrlY1() Returns the y coordinate of the curve’s first control point.
double	getCtrlY2() Returns the y coordinate of the curve’s second control point.
Point2D	getP1() Returns the curve’s start point.
Point2D	getP2() Returns the curve’s end point.
double	getX1() Returns the x coordinate of the curve’s start point.
double	getX2() Returns the x coordinate of the curve’s end point.
double	getY1() Returns the y coordinate of the curve’s start point.
double	getY2() Returns the y coordinate of the curve’s end point.
void	setCurve(double x1, double y1, double cx1, double cy1, double cx2, double cy2, double x2, double y2) Changes the curve geometry, separately specifying each coordinate value.

Field Detail

ctrlx1

public double ctrlx1

The x coordinate of the curve’s first control point.

ctrlx2

public double ctrlx2

The x coordinate of the curve’s second control point.

ctrly1

public double ctrly1

The y coordinate of the curve’s first control point.

ctrly2

public double ctrly2

The y coordinate of the curve’s second control point.

x1

public double x1

The x coordinate of the curve’s start point.

x2

public double x2

The x coordinate of the curve’s end point.

y1

public double y1

The y coordinate of the curve’s start point.

y2

public double y2

The y coordinate of the curve’s end point.

Constructor Detail

Double

public Double()

Constructs a new CubicCurve2D that stores its coordinate values in double-precision floating-point format. All points are initially at position (0, 0).

Double

public Double(double x1, double y1, double cx1, double cy1, double cx2, double cy2, double x2, double y2)

Constructs a new CubicCurve2D that stores its coordinate values in double-precision floating-point format, specifying the initial position of each point.

A drawing of a CubicCurve2D

Parameters: x1 the x coordinate of the curve’s start point. y1 the y coordinate of the curve’s start point. cx1 the x coordinate of the curve’s first control point. cy1 the y coordinate of the curve’s first control point. cx2 the x coordinate of the curve’s second control point. cy2 the y coordinate of the curve’s second control point. x2 the x coordinate of the curve’s end point. y2 the y coordinate of the curve’s end point.

Method Detail

getBounds2D

public Rectangle2D getBounds2D()

Determines the smallest rectangle that encloses the curve’s start, end and control points. As the illustration below shows, the invisible control points may cause the bounds to be much larger than the area that is actually covered by the curve.

An illustration of the bounds of a CubicCurve2D

getCtrlP1

public Point2D getCtrlP1()

Returns the curve’s first control point.

getCtrlP2

public Point2D getCtrlP2()

Returns the curve’s second control point.

getCtrlX1

public double getCtrlX1()

Returns the x coordinate of the curve’s first control point.

getCtrlX2

public double getCtrlX2()

Returns the x coordinate of the curve’s second control point.

getCtrlY1

public double getCtrlY1()

Returns the y coordinate of the curve’s first control point.

getCtrlY2

public double getCtrlY2()

Returns the y coordinate of the curve’s second control point.

getP1

public Point2D getP1()

Returns the curve’s start point.

getP2

public Point2D getP2()

Returns the curve’s end point.

getX1

public double getX1()

Returns the x coordinate of the curve’s start point.

getX2

public double getX2()

Returns the x coordinate of the curve’s end point.

getY1

public double getY1()

Returns the y coordinate of the curve’s start point.

getY2

public double getY2()

Returns the y coordinate of the curve’s end point.

setCurve

public void setCurve(double x1, double y1, double cx1, double cy1, double cx2, double cy2, double x2, double y2)

Changes the curve geometry, separately specifying each coordinate value.

A drawing of a CubicCurve2D

Parameters: x1 the x coordinate of the curve’s new start point. y1 the y coordinate of the curve’s new start point. cx1 the x coordinate of the curve’s new first control point. cy1 the y coordinate of the curve’s new first control point. cx2 the x coordinate of the curve’s new second control point. cy2 the y coordinate of the curve’s new second control point. x2 the x coordinate of the curve’s new end point. y2 the y coordinate of the curve’s new end point.