Line2D

java.lang.Object
- sk.fiit.robocup.library.geometry.Line2D

```
public class Line2D
extends Object
```

Field Summary

Fields
Modifier and Type	Field and Description
`private double`	`a`
`private double`	`b`
`private double`	`c`
`private double`	`kx`
`private double`	`ky`
`private double`	`nx`
`private double`	`ny`
`private double`	`x1`
`private double`	`x2`
`private double`	`y1`
`private double`	`y2`

Constructor Summary

Constructors
Constructor and Description
`Line2D(double x1, double y1, double x2, double y2)` Line computed from two points Normal and directional vector are computed for first point (x1,y1)
`Line2D(double x, double y, Vector2 directionVector)` Line computed by point and directional vector.

Method Summary

Methods
Modifier and Type	Method and Description
`double`	`getA()`
`double`	`getB()`
`double`	`getC()`
`List<Vector2>`	`getCircleIntersection(Circle c)` Returns intersection points for a given circle (maximum list of 2 points, minimum empty list).
`double`	`getKx()`
`double`	`getKy()`
`Vector2`	`getNormalVector()`
`double`	`getNx()`
`double`	`getNy()`
`double`	`getX1()`
`double`	`getX2()`
`double`	`getY1()`
`double`	`getY2()`
`double`	`solveGeneralEqation(double x, double y)` Solve general equation of line for given point
`String`	`toString()`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Field Detail
  - x1
```
private double x1
```
  - y1
```
private double y1
```
  - x2
```
private double x2
```
  - y2
```
private double y2
```
  - a
```
private double a
```
  - b
```
private double b
```
  - c
```
private double c
```
  - nx
```
private double nx
```
  - ny
```
private double ny
```
  - kx
```
private double kx
```
  - ky
```
private double ky
```
- Constructor Detail
  - Line2D
```
public Line2D(double x1,
      double y1,
      double x2,
      double y2)
```
    Line computed from two points Normal and directional vector are computed for first point (x1,y1)
    
    Parameters:
    x1 - x axis of first point
    y1 - y axis of first point
    x2 - x axis of second point
    y2 - y axis of second point
  - Line2D
```
public Line2D(double x,
      double y,
      Vector2 directionVector)
```
    Line computed by point and directional vector.
    
    Parameters:
    x - x axis of first point
    y - y axis of first point
    directionVector - x axis of first point
- Method Detail
  - getNormalVector
```
public Vector2 getNormalVector()
```
    Returns:
    normal vector of line (normal vector is orthogonal to line)
  - solveGeneralEqation
```
public double solveGeneralEqation(double x,
                         double y)
```
    Solve general equation of line for given point
    
    Parameters:
    x - x axis of point
    y - y axis of point
    
    Returns:
    value of a*x+b*y+c
  - getCircleIntersection
```
public List<Vector2> getCircleIntersection(Circle c)
```
    Returns intersection points for a given circle (maximum list of 2 points, minimum empty list). Works, but needs refactor. source:http://stackoverflow.com/questions/1073336/circle-line-collision-detection
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object
  - getX1
```
public double getX1()
```
  - getY1
```
public double getY1()
```
  - getX2
```
public double getX2()
```
  - getY2
```
public double getY2()
```
  - getA
```
public double getA()
```
  - getB
```
public double getB()
```
  - getC
```
public double getC()
```
  - getNx
```
public double getNx()
```
  - getNy
```
public double getNy()
```
  - getKx
```
public double getKx()
```
  - getKy
```
public double getKy()
```

Class Line2D

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

x1

y1

x2

y2

a

b

c

nx

ny

kx

ky

Constructor Detail

Line2D

Line2D

Method Detail

getNormalVector

solveGeneralEqation

getCircleIntersection

toString

getX1

getY1

getX2

getY2

getA

getB

getC

getNx

getNy

getKx

getKy