/usr/share/SuperCollider/HelpSource/Classes/IEnvGen.schelp is in supercollider-common 1:3.8.0~repack-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 | class:: IEnvGen
summary:: Envelope generator for polling values from an Env
categories:: UGens>Envelopes
related:: Classes/Env
description::
Envelope generator for polling values from an envelope. IEnvGen plays back break point envelopes from the code::index:: point. The envelopes are instances of the link::Classes/Env:: class.
classmethods::
private:: categories, new1
method:: ar, kr
argument:: envelope
an instance of Env (this is static for the life of the UGen)
argument:: index
a point to access within the Env
argument:: mul
argument:: add
instancemethods::
private:: init, argNamesInputsOffset, convertEnv
examples::
code::
(
{
var env = Env([0, 0.6, 0.3, 1.0, 0], [0.1, 0.02, 0.4, 1.1], [\lin, \exp, -6, \sin]);
var envgen = IEnvGen.kr(env, MouseX.kr(0, env.times.sum));
env.plot;
SinOsc.ar(envgen * 500 + 440)
}.play;
)
// index with an SinOsc ... mouse controls amplitude of SinOsc
// use offset so negative values of SinOsc will map into the Env
(
{
var sin = SinOsc.ar(440, 0, MouseX.kr(0, 1));
// use offset so negative values of SinOsc will map into the Env
var env = Env([-1, -0.7, 0.7, 1], [ 0.8666, 0.2666, 0.8668 ], \lin, offset: -1.0);
IEnvGen.ar(env, sin) * 0.1
}.play;
)
// index with Amplitude of input, control freq of SinOsc (uses SoundIn)
(
{
var point = Amplitude.ar(SoundIn.ar(0), 0.01, 0.2);
// use offset so negative values of SinOsc will map into the Env
var env = Env.xyc([[0, 330, \exp], [0.5, 440, \exp], [1.0, 1760]]);
SinOsc.ar(IEnvGen.kr(env, point)) * 0.2
}.play;
)
::
|