Package com.reportmill.graphics

Class RMBezier

java.lang.Object

com.reportmill.base.RMObject

com.reportmill.graphics.RMLine

com.reportmill.graphics.RMQuadratic

com.reportmill.graphics.RMBezier

All Implemented Interfaces:

RMArchiver.Archiving, java.lang.Cloneable

public class RMBezier
extends RMQuadratic

This class models a simple bezier curve, providing methods for extracting points, distance calculation, bisection, hit detection and such.

Field Summary

Fields

Modifier and Type	Field	Description
RMPoint	_cp2

Fields inherited from class com.reportmill.graphics.RMQuadratic

_cp1

Fields inherited from class com.reportmill.graphics.RMLine

_ep, _sp

Constructor Summary

Constructors

Constructor	Description
RMBezier()	Creates a new bezier.
RMBezier(RMPoint startPoint, RMPoint controlPoint1, RMPoint controlPoint2, RMPoint endPoint)	Creates a new bezier from the given start point, control points and end point.

Method Summary

Modifier and Type	Method	Description
java.awt.geom.Rectangle2D	getBounds2D()	Returns the bounding box of the shape.
double	getDistanceBezier(RMPoint aPoint)	Returns the minimum distance from the given point to the curve.
RMHitInfo	getHitInfo(RMBezier aBezier)	Returns a hit info for this bezier and given bezier.
RMHitInfo	getHitInfo(RMLine aLine)	Returns the hit info for this bezier and a given line.
float	getMaxX()	Returns the max x point of this bezier.
float	getMaxY()	Returns the max y point of this bezier.
float	getMinX()	Returns the min x point of this bezier.
float	getMinY()	Returns the min y point of this bezier.
RMPoint	getPoint(double t)	Returns a specific point on the curve at the given parametric value (from 0-1).
void	setCurve(RMPoint p1, RMPoint p2, RMPoint p3, RMPoint p4)	Sets the values of the curve.
void	setEnd(double t)	Reset this curve's end point to the given parametric location (0-1).
void	setStart(double t)	Reset this curve's start point to the given parametric location (0-1).
void	subdivide(RMBezier left, RMBezier right, double t)	Returns a bezier curve from this curve's start point to the given parametric location (0-1).
java.lang.String	toString()	Returns a string representation of this bezier.

Methods inherited from class com.reportmill.graphics.RMQuadratic

getDistanceQuadratic, setCurve, setCurve, subdivide

Methods inherited from class com.reportmill.graphics.RMLine

getDistanceLine, getDistanceToLineSquared, getHead, getHitInfo, getTail

Methods inherited from class com.reportmill.base.RMObject

clone, copy, didChange, didUndo, getAnimAttribute, getClassNameShort, initWithArchiver, undoClone, undoCopy, undoEquals

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

_cp2

public RMPoint _cp2

Constructor Detail

RMBezier

public RMBezier()

Creates a new bezier.

RMBezier

public RMBezier(RMPoint startPoint,
                RMPoint controlPoint1,
                RMPoint controlPoint2,
                RMPoint endPoint)

Creates a new bezier from the given start point, control points and end point.

Method Detail

setCurve

public void setCurve(RMPoint p1,
                     RMPoint p2,
                     RMPoint p3,
                     RMPoint p4)

Sets the values of the curve.

getPoint

public RMPoint getPoint(double t)

Returns a specific point on the curve at the given parametric value (from 0-1).

Overrides:

getPoint in class RMQuadratic

getDistanceBezier

public double getDistanceBezier(RMPoint aPoint)

Returns the minimum distance from the given point to the curve.

getMinX

public float getMinX()

Returns the min x point of this bezier.

Overrides:

getMinX in class RMQuadratic

getMinY

public float getMinY()

Returns the min y point of this bezier.

Overrides:

getMinY in class RMQuadratic

getMaxX

public float getMaxX()

Returns the max x point of this bezier.

Overrides:

getMaxX in class RMQuadratic

getMaxY

public float getMaxY()

Returns the max y point of this bezier.

Overrides:

getMaxY in class RMQuadratic

getBounds2D

public java.awt.geom.Rectangle2D getBounds2D()

Returns the bounding box of the shape.

getHitInfo

public RMHitInfo getHitInfo(RMLine aLine)

Returns the hit info for this bezier and a given line.

Overrides:

getHitInfo in class RMLine

getHitInfo

public RMHitInfo getHitInfo(RMBezier aBezier)

Returns a hit info for this bezier and given bezier.

Overrides:

getHitInfo in class RMLine

subdivide

public void subdivide(RMBezier left,
                      RMBezier right,
                      double t)

Returns a bezier curve from this curve's start point to the given parametric location (0-1).

setEnd

public void setEnd(double t)

Reset this curve's end point to the given parametric location (0-1).

Overrides:

setEnd in class RMLine

setStart

public void setStart(double t)

Reset this curve's start point to the given parametric location (0-1).

Overrides:

setStart in class RMLine

toString

public java.lang.String toString()

Returns a string representation of this bezier.

Overrides:

toString in class RMLine