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com.imagero.geom
Class Line  

java.lang.Object
  com.imagero.geom.Line

Direct Known Subclasses:

LineSegment

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public class Line

extends java.lang.Object

Every line (in 2D) can be represented with formula y = a*x + b; Class Line is based on this insight, this makes him very simple and clear.

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Field Summary
(package private)  float	a
(package private)  float	b

 

Constructor Summary

Line(float a, float b)

Line(java.awt.geom.Point2D p1, java.awt.geom.Point2D p2)

Line(java.awt.Point p1, java.awt.Point p2)

 

Method Summary
boolean	contains(java.awt.Point p)           determine if given point lies on this line
float	getX(float y)           get x coordinate of point on line by given y coordinate
float	getY(float x)           get y coordinate of point on line by given x coordinate
java.awt.Point	intersection(Line ln)           get intersection point of this line with another one
boolean	intersects(LineSegment ls)
boolean	isOver(java.awt.Point p)
boolean	isUnder(java.awt.Point p)
java.awt.Point	nearestPoint(java.awt.Point p)           find nearest point on this Line to supplied Point

 

Methods inherited from class java.lang.Object

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

 

Field Detail

a

float a

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b

float b

Constructor Detail

Line

public Line(float a,
            float b)

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Line

public Line(java.awt.Point p1,
            java.awt.Point p2)

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Line

public Line(java.awt.geom.Point2D p1,
            java.awt.geom.Point2D p2)

Method Detail

contains

public boolean contains(java.awt.Point p)

determine if given point lies on this line

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intersection

public final java.awt.Point intersection(Line ln)

get intersection point of this line with another one

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getX

public float getX(float y)

get x coordinate of point on line by given y coordinate

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getY

public float getY(float x)

get y coordinate of point on line by given x coordinate

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nearestPoint

public java.awt.Point nearestPoint(java.awt.Point p)

find nearest point on this Line to supplied Point

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intersects

public boolean intersects(LineSegment ls)

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isOver

public boolean isOver(java.awt.Point p)

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isUnder

public boolean isUnder(java.awt.Point p)

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