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/*
Roessler.cc
Copyright 2002-7 Tim Goetze <tim@quitte.de>
http://quitte.de/dsp/
the sound of a Roessler attractor.
*/
/*
This program 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 2
of the License, or (at your option) any later version.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA or point your web browser to http://www.gnu.org.
*/
#include <stdlib.h>
#include "basics.h"
#include "Roessler.h"
#include "Descriptor.h"
void
Roessler::init()
{
roessler.init (h = .001, frandom());
gain = 0;
}
template <sample_func_t F>
void
Roessler::one_cycle (int frames)
{
roessler.set_rate (getport(0));
double g = (gain == getport(4)) ?
1 : pow (getport(4) / gain, 1. / (double) frames);
d_sample * d = ports[5];
d_sample x,
sx = .043 * getport(1),
sy = .051 * getport(2),
sz = .018 * getport(3);
for (int i = 0; i < frames; ++i)
{
roessler.get();
x =
sx * (roessler.get_x() - .515) +
sy * (roessler.get_y() + 2.577) +
sz * (roessler.get_z() - 2.578);
F (d, i, gain * x, adding_gain);
gain *= g;
}
gain = getport(4);
}
/* //////////////////////////////////////////////////////////////////////// */
PortInfo
Roessler::port_info [] =
{
{
"h",
INPUT | CONTROL,
{BOUNDED, 0, 1}
}, {
"x",
INPUT | CONTROL,
{BOUNDED | DEFAULT_1, 0, 1}
}, {
"y",
INPUT | CONTROL,
{BOUNDED | DEFAULT_MID, 0, 1}
}, {
"z",
INPUT | CONTROL,
{BOUNDED | DEFAULT_0, 0, 1}
}, {
"volume",
INPUT | CONTROL,
{BOUNDED | DEFAULT_MID, MIN_GAIN, 1}
}, {
"out",
OUTPUT | AUDIO,
{0}
}
};
template <> void
Descriptor<Roessler>::setup()
{
UniqueID = 1780;
Label = "Roessler";
Properties = HARD_RT;
Name = CAPS "Roessler - The sound of a Roessler attractor";
Maker = "Tim Goetze <tim@quitte.de>";
Copyright = "GPL, 2004-7";
/* fill port info and vtable */
autogen();
}
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