uk.org.toot.music.tonality
Class Scale

java.lang.Object
  uk.org.toot.music.tonality.Scale

public class Scale
extends java.lang.Object

A Scale is a list of intervals. Melodies are derived from a scale. Chords are derived from the modes of a scale, aka chord modes.

Author:

st

Constructor Summary

Scale(java.lang.String name, int[] intervals)
Constructor

Method Summary

int[]	getChordMode(int index) Derive the Chord Mode for the specified index into this Scale.
int[]	getIntervals()
int	getIntervalsAsInt()
java.lang.String	getName()
boolean	hasInterval(int index, int val)
int	interval(int index) Return the interval of the specified index into this Scale.
int	interval(int index1, int index2) Return the interval between the specified indices into this Scale.
int	length()

Methods inherited from class java.lang.Object

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

Constructor Detail

Scale

public Scale(java.lang.String name,
             int[] intervals)

Constructor

Method Detail

length

public int length()

Returns:

the length of this Scale.

getName

public java.lang.String getName()

Returns:

the name of this Scale.

getIntervals

public int[] getIntervals()

Returns:

the intervals of this Scale.

getIntervalsAsInt

public int getIntervalsAsInt()

Returns:

the intervals of this Scale as a bitmask.

interval

public int interval(int index)

Return the interval of the specified index into this Scale.

Parameters:

index - the index into this Scale.

Returns:

the indexed interval

interval

public int interval(int index1,
                    int index2)

Return the interval between the specified indices into this Scale. If index2 is less than index1, the interval for index2 is raised by an octave so that modes of the scale (rotations) can be derived easily by getChordMode().

Parameters:

index1 - the index of the lower interval

index2 - the index of the higher interval

Returns:

the interval between the specified indices

getChordMode

public int[] getChordMode(int index)

Derive the Chord Mode for the specified index into this Scale.

Parameters:

index - the index into this Scale

Returns:

the array of intervals representing the chord mode

hasInterval

public boolean hasInterval(int index,
                           int val)

Returns:

true if interval is diatonic from this index, false otherwise