org.opentripplanner.common.geometry

Class AccumulativeGridSampler<TZ>

java.lang.Object

org.opentripplanner.common.geometry.AccumulativeGridSampler<TZ>

public class AccumulativeGridSampler<TZ>
extends Object

Helper class to fill-in a ZSampleGrid from a given loosely-defined set of sampling points. The process is customized by an "accumulative" metric which gives the behavior of cumulating several values onto one sampling point. To use this class, create an instance giving an AccumulativeMetric implementation as parameter. Then for each source sample, call "addSample" with the its TZ value. At the end, call close() to close the sample grid (ie add grid node at the edge to make sure borders are correctly defined, the definition of correct is left to the client).

Author:

laurent

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	AccumulativeGridSampler.AccumulativeMetric<TZ> An accumulative metric give the behavior of combining several samples to a regular sample grid, ie how we should weight and add several TZ values from inside a cell to compute the cell corner TZ values.

Constructor Summary

Constructors

Constructor and Description
AccumulativeGridSampler(ZSampleGrid<TZ> sampleGrid, AccumulativeGridSampler.AccumulativeMetric<TZ> metric)

Method Summary

Modifier and Type	Method and Description
void	addSamplingPoint(org.locationtech.jts.geom.Coordinate C0, TZ z, double offRoadSpeed)
void	close() Surround all existing samples on the edge by a layer of closing samples.

Methods inherited from class java.lang.Object

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

Constructor Detail

AccumulativeGridSampler

public AccumulativeGridSampler(ZSampleGrid<TZ> sampleGrid,
                               AccumulativeGridSampler.AccumulativeMetric<TZ> metric)

Parameters:

metric - TZ data "behavior" and "metric".

Method Detail

addSamplingPoint

public final void addSamplingPoint(org.locationtech.jts.geom.Coordinate C0,
                                   TZ z,
                                   double offRoadSpeed)

close

public final void close()

Surround all existing samples on the edge by a layer of closing samples.