Package com.reportmill.graphics

Class RMLine

java.lang.Object

com.reportmill.base.RMObject

com.reportmill.graphics.RMLine

All Implemented Interfaces:

RMArchiver.Archiving, Cloneable

Direct Known Subclasses:

RMQuadratic

public class RMLine
extends RMObject

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

Field Summary

Fields

Modifier and Type	Field	Description
RMPoint	_ep
RMPoint	_sp

Constructor Summary

Constructors

Constructor	Description
RMLine()	Creates a new line.
RMLine(float x1, float y1, float x2, float y2)	Creates a new line for the given x & y start/end points.
RMLine(RMPoint startPoint, RMPoint endPoint)	Creates a new line for the given start point and end point.

Method Summary

Modifier and Type	Method	Description
double	getDistanceLine(RMPoint aPoint)	Returns the minimum distance from the given point to this line.
static double	getDistanceToLineSquared(double p0x, double p0y, double p1x, double p1y, double p2x, double p2y)	Returns the distance from the given point components (p0) to the given line components (p1->p2).
RMLine	getHead(double t)	Returns a new line from this line's start point to given parametric location t (defined from 0-1) on this line.
RMHitInfo	getHitInfo(RMBezier aBezier)	Returns a hit info object for this line and the given bezier.
RMHitInfo	getHitInfo(RMLine aLine)	Returns a hit info object for this line and the given line.
RMHitInfo	getHitInfo(RMQuadratic aCurve)	Returns a hit info object for this line and the given bezier curve.
float	getMaxX()	Returns the max x point of this line.
float	getMaxY()	Returns the max y point of this line.
float	getMinX()	Returns the min x point of this line.
float	getMinY()	Returns the min y point of this line.
RMPoint	getPoint(double t)	Returns the point on this line at the parametric location t (defined from 0-1).
RMLine	getTail(double t)	Returns a new line from given parametric location t (defined from 0-1) on this line to this line's end point.
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).
String	toString()	Returns a string representation of this line.

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 Details

_sp

public RMPoint _sp

_ep

public RMPoint _ep

Constructor Details

RMLine

public RMLine()

Creates a new line.

RMLine

public RMLine(float x1,
 float y1,
 float x2,
 float y2)

Creates a new line for the given x & y start/end points.

RMLine

public RMLine(RMPoint startPoint,
 RMPoint endPoint)

Creates a new line for the given start point and end point.

Method Details

getPoint

public RMPoint getPoint(double t)

Returns the point on this line at the parametric location t (defined from 0-1).

getDistanceLine

public double getDistanceLine(RMPoint aPoint)

Returns the minimum distance from the given point to this line.

getDistanceToLineSquared

public static double getDistanceToLineSquared(double p0x,
 double p0y,
 double p1x,
 double p1y,
 double p2x,
 double p2y)

Returns the distance from the given point components (p0) to the given line components (p1->p2).

getMinX

public float getMinX()

Returns the min x point of this line.

getMinY

public float getMinY()

Returns the min y point of this line.

getMaxX

public float getMaxX()

Returns the max x point of this line.

getMaxY

public float getMaxY()

Returns the max y point of this line.

getHead

public RMLine getHead(double t)

Returns a new line from this line's start point to given parametric location t (defined from 0-1) on this line.

getTail

public RMLine getTail(double t)

Returns a new line from given parametric location t (defined from 0-1) on this line to this line's end point.

setEnd

public void setEnd(double t)

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

setStart

public void setStart(double t)

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

getHitInfo

public RMHitInfo getHitInfo(RMLine aLine)

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

getHitInfo

public RMHitInfo getHitInfo(RMQuadratic aCurve)

Returns a hit info object for this line and the given bezier curve. HitInfo._index is overloaded to contain number of hits.

getHitInfo

public RMHitInfo getHitInfo(RMBezier aBezier)

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

toString

public String toString()

Returns a string representation of this line.

Overrides:

toString in class Object