Package com.sk89q.worldedit.math.interpolation

Class ReparametrisingInterpolation

java.lang.Object

com.sk89q.worldedit.math.interpolation.ReparametrisingInterpolation

All Implemented Interfaces:

Interpolation

public class ReparametrisingInterpolation
extends Object
implements Interpolation

Reparametrises another interpolation function by arc length.

This is done so entities travel at roughly the same speed across the whole route.

Constructor Summary

Constructors

Constructor	Description
ReparametrisingInterpolation(Interpolation baseInterpolation)

Method Summary

Modifier and Type	Method	Description
double	arcLength(double positionA, double positionB)	Gets the result of ∫ab|f'(t)| dt. That means it calculates the arc length (in meters) between positionA and positionB.
Vector3	get1stDerivative(double position)	Gets the result of f'(position).
Interpolation	getBaseInterpolation()
Vector3	getPosition(double position)	Gets the result of f(position).
int	getSegment(double position)	Get the segment position.
void	setNodes(List<Node> nodes)	Sets nodes to be used by subsequent calls to Interpolation.getPosition(double) and the other methods.

Methods inherited from class java.lang.Object

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

Constructor Details

ReparametrisingInterpolation

public ReparametrisingInterpolation(Interpolation baseInterpolation)

Method Details

setNodes

public void setNodes(List<Node> nodes)

Description copied from interface: Interpolation

Sets nodes to be used by subsequent calls to Interpolation.getPosition(double) and the other methods.

Specified by:

setNodes in interface Interpolation

Parameters:

nodes - the nodes

getBaseInterpolation

public Interpolation getBaseInterpolation()

getPosition

public Vector3 getPosition(double position)

Description copied from interface: Interpolation

Gets the result of f(position).

Specified by:

getPosition in interface Interpolation

Parameters:

position - the position to interpolate

Returns:

the result

get1stDerivative

public Vector3 get1stDerivative(double position)

Description copied from interface: Interpolation

Gets the result of f'(position).

Specified by:

get1stDerivative in interface Interpolation

Parameters:

position - the position to interpolate

Returns:

the result

arcLength

public double arcLength(double positionA,
 double positionB)

Description copied from interface: Interpolation

Gets the result of ∫_a^b|f'(t)| dt.
That means it calculates the arc length (in meters) between positionA and positionB.

Specified by:

arcLength in interface Interpolation

Parameters:

positionA - lower limit

positionB - upper limit

Returns:

the arc length

getSegment

public int getSegment(double position)

Description copied from interface: Interpolation

Get the segment position.

Specified by:

getSegment in interface Interpolation

Parameters:

position - the position

Returns:

the segment position