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+/* sc4pd
+ sc/~
+
+ Copyright (c) 2004 Tim Blechmann.
+
+ This code is derived from:
+ SuperCollider real time audio synthesis system
+ Copyright (c) 2002 James McCartney. All rights reserved.
+ http://www.audiosynth.com
+
+ 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.
+
+ Based on:
+ PureData by Miller Puckette and others.
+ http://www.crca.ucsd.edu/~msp/software.html
+ FLEXT by Thomas Grill
+ http://www.parasitaere-kapazitaeten.net/ext
+ SuperCollider by James McCartney
+ http://www.audiosynth.com
+
+ Coded while listening to: Phil Minton & Veryan Weston: Ways
+
+*/
+
+#include "sc4pd.hpp"
+
+
+/* ------------------------ sc/~ -------------------------------*/
+
+class scdiv_ar:
+ public sc4pd_dsp
+{
+ FLEXT_HEADER(scdiv_ar,sc4pd_dsp);
+
+public:
+ scdiv_ar(int argc, t_atom *argv);
+
+protected:
+ virtual void m_signal(int n, t_sample *const *in, t_sample *const *out);
+
+ void m_set(float f)
+ {
+ m_nextdivisor = f;
+ changed = true;
+ }
+
+ float m_nextdivisor, m_divisor;
+ bool changed;
+ bool invert;
+
+private:
+ FLEXT_CALLBACK_1(m_set,float);
+};
+
+FLEXT_LIB_DSP_V("sc/~",scdiv_ar);
+
+scdiv_ar::scdiv_ar(int argc, t_atom *argv)
+{
+ FLEXT_ADDMETHOD(1,m_set);
+
+ //parse arguments
+ AtomList Args(argc,argv);
+
+ m_divisor = sc_getfloatarg(Args,0);
+
+ invert = sc_inv(Args);
+
+ AddInSignal("signal");
+ AddInFloat("scalar");
+ AddOutSignal();
+
+ changed = false;
+}
+
+void scdiv_ar::m_signal(int n, t_sample *const *in,
+ t_sample *const *out)
+{
+ t_sample *nin = *in;
+ t_sample *nout = *out;
+
+ if (invert)
+ {
+ if (changed)
+ {
+ float xb = m_nextdivisor;
+ float slope = CALCSLOPE(xb, m_divisor);
+ for (int i = 0; i!=n; ++i)
+ {
+ ZXP(nout) = xb / ZXP(nin);
+ xb += slope;
+ }
+ m_divisor = xb;
+ changed = false;
+ }
+ else
+ {
+ float xb = m_divisor;
+
+ for (int i = 0; i!=n; ++i)
+ {
+ ZXP(nout) = xb / ZXP(nin);
+ }
+ }
+ }
+ else
+ {
+ if (changed)
+ {
+ float xb = m_nextdivisor;
+ float slope = CALCSLOPE(xb, m_divisor);
+ for (int i = 0; i!=n; ++i)
+ {
+ ZXP(nout) = ZXP(nin) / xb;
+ xb += slope;
+ }
+ m_divisor = xb;
+ changed = false;
+ }
+ else
+ {
+ float xb = m_divisor;
+
+ for (int i = 0; i!=n; ++i)
+ {
+ ZXP(nout) = ZXP(nin) / xb;
+ }
+ }
+ }
+}
+