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/*
VASP modular - vector assembling signal processor / objects for Max/MSP and PD
Copyright (c) 2002 Thomas Grill (xovo@gmx.net)
For information on usage and redistribution, and for a DISCLAIMER OF ALL
WARRANTIES, see the file, "license.txt," in this distribution.
*/
#include "main.h"
#include "classes.h"
#include "util.h"
#include <math.h>
/*! \class vasp_qpeaks
\remark \b vasp.peaks?
\brief Get most pronounced peaks of a single vasp vector.
\since 0.0.6
\param inlet vasp - is stored and output triggered
\param inlet bang - triggers output
\param inlet set - vasp to be stored
\retval outlet.0 list - peak positions
\retval outlet.1 list - peak values
\note Outputs nothing if vasp is undefined or invalid
\note Only works for a vasp with one vector. No output otherwise.
\todo Units for peak position list
*/
class vasp_qpeaks:
public vasp_op
{
FLEXT_HEADER_S(vasp_qpeaks,vasp_op,Setup)
public:
vasp_qpeaks(I argc,const t_atom *argv):
peaks(1)
{
if(argc >= 1 && CanbeInt(argv[0]))
m_peaks(GetAInt(argv[0]));
else if(argc)
post("%s - Number argument invalid -> ignored",thisName());
AddInAnything();
AddInInt();
AddOutAnything(2);
}
static V Setup(t_classid c)
{
FLEXT_CADDMETHOD(c,1,m_peaks);
FLEXT_CADDATTR_VAR(c,"peaks",peaks,m_peaks);
}
V m_peaks(I n) { peaks = n; }
virtual V m_bang()
{
if(!ref.Ok())
post("%s - Invalid vasp!",thisName());
else if(ref.Vectors() > 1)
post("%s - More than one vector in vasp!",thisName());
else {
VBuffer *buf = ref.Buffer(0);
I i,cnt = buf->Length(),pkfnd = 0;
S *p = buf->Pointer();
I mxpk = min(cnt,peaks);
t_atom *pos = new t_atom[mxpk],*lst = new t_atom[mxpk];
for(i = 0; i < mxpk; ++i) SetFloat(lst[i],0);
for(i = 0; i < cnt; ++i) {
const F v = fabs(p[i]);
if(v && v > GetFloat(lst[mxpk-1])) {
I ix;
for(ix = min(pkfnd-1,mxpk-1); ix >= 0; --ix) {
if(v > GetFloat(lst[ix])) {
if(ix < mxpk-1) {
pos[ix+1] = pos[ix];
lst[ix+1] = lst[ix];
}
}
else break;
}
++ix;
SetFloat(pos[ix],i);
SetFloat(lst[ix],v);
if(++pkfnd > mxpk) pkfnd = mxpk;
}
}
ToOutAnything(0,sym_list,pkfnd,pos);
ToOutAnything(1,sym_list,pkfnd,lst);
delete[] pos;
delete[] lst;
delete buf;
}
}
virtual V m_help() { post("%s - Get list of most pronounced peaks of a vasp vector",thisName()); }
protected:
I peaks;
private:
FLEXT_CALLBACK_I(m_peaks);
FLEXT_CALLSET_I(m_peaks);
FLEXT_ATTRGET_I(peaks);
};
FLEXT_LIB_V("vasp, vasp.peaks?",vasp_qpeaks)
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