org.opentripplanner.analyst.request

Class SampleGridRenderer.WTWD.IsolineMetric

java.lang.Object

org.opentripplanner.analyst.request.SampleGridRenderer.WTWD.IsolineMetric

All Implemented Interfaces:

IsolineBuilder.ZMetric<SampleGridRenderer.WTWD>

Enclosing class:

SampleGridRenderer.WTWD

public static class SampleGridRenderer.WTWD.IsolineMetric
extends Object
implements IsolineBuilder.ZMetric<SampleGridRenderer.WTWD>

Constructor Summary

Constructors

Constructor and Description
IsolineMetric()

Method Summary

Modifier and Type	Method and Description
int	cut(SampleGridRenderer.WTWD zA, SampleGridRenderer.WTWD zB, SampleGridRenderer.WTWD z0) Check if the edge [AB] between two samples A and B "intersect" the zz0 plane.
double	interpolate(SampleGridRenderer.WTWD zA, SampleGridRenderer.WTWD zB, SampleGridRenderer.WTWD z0) Interpolate a crossing point on an edge [AB].

Methods inherited from class java.lang.Object

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

Constructor Detail

IsolineMetric

public IsolineMetric()

Method Detail

cut

public int cut(SampleGridRenderer.WTWD zA,
               SampleGridRenderer.WTWD zB,
               SampleGridRenderer.WTWD z0)

Description copied from interface: IsolineBuilder.ZMetric

Check if the edge [AB] between two samples A and B "intersect" the zz0 plane.

Specified by:

cut in interface IsolineBuilder.ZMetric<SampleGridRenderer.WTWD>

Parameters:

zA - z value for the A sample

zB - z value for the B sample

z0 - z value for the intersecting plane

Returns:

0 if no intersection, -1 or +1 if intersection (depending on which is lower, A or B).

interpolate

public double interpolate(SampleGridRenderer.WTWD zA,
                          SampleGridRenderer.WTWD zB,
                          SampleGridRenderer.WTWD z0)

Description copied from interface: IsolineBuilder.ZMetric

Interpolate a crossing point on an edge [AB].

Specified by:

interpolate in interface IsolineBuilder.ZMetric<SampleGridRenderer.WTWD>

Parameters:

zA - z value for the A sample

zB - z value for the B sample

z0 - z value for the intersecting plane

Returns:

k value between 0 and 1, where the crossing occurs. 0=A, 1=B.