Package lejos.robotics.filter

Class MinimumFilter

java.lang.Object

lejos.robotics.filter.AbstractFilter

lejos.robotics.filter.SampleBuffer

lejos.robotics.filter.MinimumFilter

All Implemented Interfaces:

SampleProvider

public class MinimumFilter
extends SampleBuffer

This filter returns the minimum values found in the N most recent samples.
The number of samples used is specified in the constructor of the filter.

Field Summary

Fields

Modifier and Type	Field and Description
(package private) float[]	buf
(package private) float[]	min
(package private) float[]	oldest

Fields inherited from class lejos.robotics.filter.SampleBuffer

actualSize, bufferSize, currentPos, sampleBuffer

Fields inherited from class lejos.robotics.filter.AbstractFilter

sampleSize, source

Constructor Summary

Constructors

Constructor and Description
MinimumFilter(SampleProvider source, int bufferSize)

Method Summary

Modifier and Type	Method and Description
void	fetchSample(float[] sample, int off) Fetches a sample from a sensors or filter.

Methods inherited from class lejos.robotics.filter.SampleBuffer

getActualSize, getBufferSize, getOldest, toPos

Methods inherited from class lejos.robotics.filter.AbstractFilter

sampleSize

Methods inherited from class java.lang.Object

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

Field Detail

min

float[] min

buf

float[] buf

oldest

float[] oldest

Constructor Detail

MinimumFilter

public MinimumFilter(SampleProvider source,
                     int bufferSize)

Method Detail

fetchSample

public void fetchSample(float[] sample,
                        int off)

Description copied from interface: SampleProvider

Fetches a sample from a sensors or filter.

Specified by:

fetchSample in interface SampleProvider

Overrides:

fetchSample in class SampleBuffer

Parameters:

sample - The array to store the sample in.

off - The elements of the sample are stored in the array starting at the offset position.