Dbufwr | SuperCollider 3.12.2 Help

Class Methods

Dbufwr.new(input: 0.0, bufnum: 0, phase: 0.0, loop: 1.0)

Arguments:

input	single channel input
bufnum	buffer number to write to (single channel buffer)
phase	index into the buffer
loop	when phase exceeds number of frames in buffer, loops when set to 1 (default :1)

Discussion:

all inputs can be either demand ugen or any other ugen.

Examples

// alloc a single channel buffer
b = Buffer.alloc(s, 24, 1);
b.setn(0, { 210 } ! b.numFrames);

// post some info:
fork { loop { 0.5.wait; b.getn(0, b.numFrames, {|x| x.postln }) } };

// write demand sequence into a buffer
(
{
var read, write, readpos, writepos, writetrig;

writetrig = Dust.kr(1);
    readpos = Dseries(0, 1, inf);
    writepos = Dseq([Dseries(0, 3, 30), Dseries(0, 1, 30)], inf);

read = Dbufrd(b, readpos);
    write = Dbufwr(Dseq([Dseries(1, 1, 16), Dwhite(1, 16, 8)], inf) * 60, b, writepos);

Demand.kr(writetrig, 0, write); // write on trigger

SinOsc.ar(
        Demand.kr(Impulse.kr(16), 0, read).lag(0.01) * [1, 1.01]
    ) * 0.1

}.play;
)

// write into buffer with mouse clicks
(
{
    var val = MouseY.kr(1000, 200, 1); // cursor y pos controls frequency
    var pos = MouseX.kr(0, BufFrames.kr(b) - 1); // cursor x position controls buffer pos
    var write = MouseButton.kr; // button controls write action
    Demand.kr(write, 0, Dbufwr(val, b, pos, 1));
    SinOsc.ar(
        Duty.kr(Dseq([0.5, 0.75, 0.5, 1.0], inf) * 0.2, 0, Dbufrd(b, Dseries(0, 1, inf)))
    ) * 0.1
}.play;
)

// write demand sequence into a buffer
b.free; b = Buffer.alloc(s, 2, 1);
fork { loop { 0.5.wait; b.getn(0, b.numFrames, {|x| x.postln }) } };
b.setn(0, [1, 0]);

(
{
var read, write, readpos, writepos, writetrig;

writetrig = Impulse.kr(2);
    readpos = Dbufrd(b, 1); // first buffer val is position
    writepos = Dbufrd(b, 0); // second buffer val is position
    read = Dbufrd(b, readpos);

write = Dbufwr(read, b, writepos);

Demand.kr(writetrig, 0, write); // write on trigger
}.play;
)

// free buffer:
b.free;

helpfile source: /usr/local/share/SuperCollider/HelpSource/Classes/Dbufwr.schelp
link::Classes/Dbufwr::

Dbufwr : DUGen : UGen : AbstractFunction : Object

Class Methods

Dbufwr.new(input: 0.0, bufnum: 0, phase: 0.0, loop: 1.0)

Arguments:

Discussion:

Inherited class methods

Instance Methods

Inherited instance methods

Examples