Package net.paulhertz.pixelaudio.curves

Class PAIndexParametric

java.lang.Object

net.paulhertz.pixelaudio.curves.PAIndexParametric

public final class PAIndexParametric
extends Object

PAIndexParametric Parametric view of a indexed offsets, typically into a float[] buffer (audio signal). u ∈ [0,1] → f(u) For now, u is interpreted over the *index* of the offset list: - u = 0 → first index - u = 1 → last index - intermediate u → linear interpolation between neighboring offsets

Field Summary

Fields

Modifier and Type	Field	Description
private final int	count
private final int[]	offsets

Constructor Summary

Constructors

Constructor	Description
PAIndexParametric(int[] offsets)

Method Summary

Modifier and Type	Method	Description
int	getPointCount()
private static float	lerp(int a, int b, float u)
int	sample(float u)	Sample the path at parameter u ∈ [0,1], returning an interpolated point.

Methods inherited from class java.lang.Object

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

Field Details

offsets

private final int[] offsets

count

private final int count

Constructor Details

PAIndexParametric

public PAIndexParametric(int[] offsets)

Parameters:

offsets - ordered offsets in a buffer must contain at least 2 offsets.

Method Details

getPointCount

public int getPointCount()

sample

public int sample(float u)

Sample the path at parameter u ∈ [0,1], returning an interpolated point. u is clamped to [0,1].

lerp

private static float lerp(int a,
 int b,
 float u)