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Interval.ck
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Interval.ck
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/*
LiCK Library for ChucK.
Copyright (c) 2007-2012 held jointly by the individual authors.
This file is part of LiCK.
LiCK is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
LiCK is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with LiCK. If not, see <http://www.gnu.org/licenses/>.
*/
public class Interval extends FloatFunction
{
1.0 => float antecedent;
1.0 => float consequent;
"1:1" => string ratio;
"Interval" => string name;
"Interval" => string description;
fun float evaluate(float value)
{
return (antecedent / consequent) * value;
}
fun Interval asc()
{
return ascending();
}
fun Interval ascending()
{
if (antecedent < consequent)
{
antecedent => float tmp;
consequent => antecedent;
tmp => consequent;
}
return this;
}
fun Interval desc()
{
return descending();
}
fun Interval descending()
{
if (antecedent > consequent)
{
antecedent => float tmp;
consequent => antecedent;
tmp => consequent;
}
return this;
}
fun Interval inversion()
{
/*
For intervals identified by their ratio, the inversion is determined by
reversing the ratio and multiplying by 2. For example, the inversion of a
5:4 ratio is an 8:5 ratio.
http://en.wikipedia.org/wiki/Interval_(music)#Inversion
*/
antecedent => float tmp;
consequent * 2.0 => antecedent;
tmp => consequent;
return this;
}
}