FieldLine (Hipparchus 1.3 API)

java.lang.Object
- org.hipparchus.geometry.euclidean.threed.FieldLine<T>

Type Parameters:

T - the type of the field elements
```
public class FieldLine<T extends RealFieldElement<T>>
extends Object
```
The class represent lines in a three dimensional space.
Each oriented line is intrinsically associated with an abscissa which is a coordinate on the line. The point at abscissa 0 is the orthogonal projection of the origin on the line, another equivalent way to express this is to say that it is the point of the line which is closest to the origin. Abscissa increases in the line direction.

Constructor Summary

Constructors
Constructor	Description
`FieldLine(FieldLine<T> line)`	Copy constructor.
`FieldLine(FieldVector3D<T> p1, FieldVector3D<T> p2, double tolerance)`	Build a line from two points.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`FieldVector3D<T>`	`closestPoint(FieldLine<T> line)`	Compute the point of the instance closest to another line.
`boolean`	`contains(FieldVector3D<T> p)`	Check if the instance contains a point.
`boolean`	`contains(Vector3D p)`	Check if the instance contains a point.
`T`	`distance(FieldLine<T> line)`	Compute the shortest distance between the instance and another line.
`T`	`distance(FieldVector3D<T> p)`	Compute the distance between the instance and a point.
`T`	`distance(Vector3D p)`	Compute the distance between the instance and a point.
`T`	`getAbscissa(FieldVector3D<T> point)`	Get the abscissa of a point with respect to the line.
`T`	`getAbscissa(Vector3D point)`	Get the abscissa of a point with respect to the line.
`FieldVector3D<T>`	`getDirection()`	Get the normalized direction vector.
`FieldVector3D<T>`	`getOrigin()`	Get the line point closest to the origin.
`double`	`getTolerance()`	Get the tolerance below which points are considered identical.
`FieldVector3D<T>`	`intersection(FieldLine<T> line)`	Get the intersection point of the instance and another line.
`boolean`	`isSimilarTo(FieldLine<T> line)`	Check if the instance is similar to another line.
`FieldVector3D<T>`	`pointAt(double abscissa)`	Get one point from the line.
`FieldVector3D<T>`	`pointAt(T abscissa)`	Get one point from the line.
`void`	`reset(FieldVector3D<T> p1, FieldVector3D<T> p2)`	Reset the instance as if built from two points.
`FieldLine<T>`	`revert()`	Get a line with reversed direction.

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

- Constructor Detail
  - FieldLine
```
public FieldLine(FieldVector3D<T> p1,
                 FieldVector3D<T> p2,
                 double tolerance)
          throws MathIllegalArgumentException
```
    Build a line from two points.
    
    Parameters:
    
    p1 - first point belonging to the line (this can be any point)
    
    p2 - second point belonging to the line (this can be any point, different from p1)
    
    tolerance - tolerance below which points are considered identical
    
    Throws:
    
    MathIllegalArgumentException - if the points are equal
  - FieldLine
```
public FieldLine(FieldLine<T> line)
```
    Copy constructor.
    The created instance is completely independent from the original instance, it is a deep copy.
    
    Parameters:
    
    line - line to copy
- Method Detail
  - reset
```
public void reset(FieldVector3D<T> p1,
                  FieldVector3D<T> p2)
           throws MathIllegalArgumentException
```
    Reset the instance as if built from two points.
    
    Parameters:
    
    p1 - first point belonging to the line (this can be any point)
    
    p2 - second point belonging to the line (this can be any point, different from p1)
    
    Throws:
    
    MathIllegalArgumentException - if the points are equal
  - getTolerance
```
public double getTolerance()
```
    Get the tolerance below which points are considered identical.
    
    Returns:
    
    tolerance below which points are considered identical
  - revert
```
public FieldLine<T> revert()
```
    Get a line with reversed direction.
    
    Returns:
    
    a new instance, with reversed direction
  - getDirection
```
public FieldVector3D<T> getDirection()
```
    Get the normalized direction vector.
    
    Returns:
    
    normalized direction vector
  - getOrigin
```
public FieldVector3D<T> getOrigin()
```
    Get the line point closest to the origin.
    
    Returns:
    
    line point closest to the origin
  - getAbscissa
```
public T getAbscissa(FieldVector3D<T> point)
```
    Get the abscissa of a point with respect to the line.
    The abscissa is 0 if the projection of the point and the projection of the frame origin on the line are the same point.
    
    Parameters:
    
    point - point to check
    
    Returns:
    
    abscissa of the point
  - getAbscissa
```
public T getAbscissa(Vector3D point)
```
    Get the abscissa of a point with respect to the line.
    The abscissa is 0 if the projection of the point and the projection of the frame origin on the line are the same point.
    
    Parameters:
    
    point - point to check
    
    Returns:
    
    abscissa of the point
  - pointAt
```
public FieldVector3D<T> pointAt(T abscissa)
```
    Get one point from the line.
    
    Parameters:
    
    abscissa - desired abscissa for the point
    
    Returns:
    
    one point belonging to the line, at specified abscissa
  - pointAt
```
public FieldVector3D<T> pointAt(double abscissa)
```
    Get one point from the line.
    
    Parameters:
    
    abscissa - desired abscissa for the point
    
    Returns:
    
    one point belonging to the line, at specified abscissa
  - isSimilarTo
```
public boolean isSimilarTo(FieldLine<T> line)
```
    Check if the instance is similar to another line.
    Lines are considered similar if they contain the same points. This does not mean they are equal since they can have opposite directions.
    
    Parameters:
    
    line - line to which instance should be compared
    
    Returns:
    
    true if the lines are similar
  - contains
```
public boolean contains(FieldVector3D<T> p)
```
    Check if the instance contains a point.
    
    Parameters:
    
    p - point to check
    
    Returns:
    
    true if p belongs to the line
  - contains
```
public boolean contains(Vector3D p)
```
    Check if the instance contains a point.
    
    Parameters:
    
    p - point to check
    
    Returns:
    
    true if p belongs to the line
  - distance
```
public T distance(FieldVector3D<T> p)
```
    Compute the distance between the instance and a point.
    
    Parameters:
    
    p - to check
    
    Returns:
    
    distance between the instance and the point
  - distance
```
public T distance(Vector3D p)
```
    Compute the distance between the instance and a point.
    
    Parameters:
    
    p - to check
    
    Returns:
    
    distance between the instance and the point
  - distance
```
public T distance(FieldLine<T> line)
```
    Compute the shortest distance between the instance and another line.
    
    Parameters:
    
    line - line to check against the instance
    
    Returns:
    
    shortest distance between the instance and the line
  - closestPoint
```
public FieldVector3D<T> closestPoint(FieldLine<T> line)
```
    Compute the point of the instance closest to another line.
    
    Parameters:
    
    line - line to check against the instance
    
    Returns:
    
    point of the instance closest to another line
  - intersection
```
public FieldVector3D<T> intersection(FieldLine<T> line)
```
    Get the intersection point of the instance and another line.
    
    Parameters:
    
    line - other line
    
    Returns:
    
    intersection point of the instance and the other line or null if there are no intersection points

Class FieldLine<T extends RealFieldElement<T>>

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

FieldLine

FieldLine

Method Detail

reset

getTolerance

revert

getDirection

getOrigin

getAbscissa

getAbscissa

pointAt

pointAt

isSimilarTo

contains

contains

distance

distance

distance

closestPoint

intersection