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/*
* iemmatrix
*
* objects for manipulating simple matrices
* mostly refering to matlab/octave matrix functions
*
* Copyright (c) 2005, Franz Zotter
* IEM, Graz, Austria
*
* For information on usage and redistribution, and for a DISCLAIMER OF ALL
* WARRANTIES, see the file, "LICENSE.txt," in this distribution.
*
*/
#include "iemmatrix.h"
static t_class *mtx_index_class;
typedef struct _MTXindex_ MTXindex;
struct _MTXindex_
{
t_object x_obj;
int index_size;
int index_rows;
int index_columns;
t_float fill_value;
int max_index;
int *index_in;
t_outlet *list_outlet;
t_atom *list_out;
t_atom *list_in;
};
static void deleteMTXIndex (MTXindex *mtx_index_obj)
{
if (mtx_index_obj->index_in)
freebytes (mtx_index_obj->index_in, sizeof(int)*(mtx_index_obj->index_size+2));
if (mtx_index_obj->list_out)
freebytes (mtx_index_obj->list_out, sizeof(t_atom)*(mtx_index_obj->index_size+2));
}
static void *newMTXIndex (t_symbol *s, int argc, t_atom *argv)
{
MTXindex *mtx_index_obj = (MTXindex *) pd_new (mtx_index_class);
t_atom fill_atom;
SETFLOAT(&fill_atom,0);
switch ((argc>1)?1:argc) {
case 1:
fill_atom = *argv;
}
if (atom_getsymbol(&fill_atom) == gensym("nan"))
#ifdef __WIN32__
mtx_index_obj->fill_value = 0.0f;
#else
mtx_index_obj->fill_value = 0.0f/0.0f;
#endif
else
mtx_index_obj->fill_value = atom_getfloat(&fill_atom);
mtx_index_obj->list_outlet = outlet_new (&mtx_index_obj->x_obj, gensym("matrix"));
inlet_new(&mtx_index_obj->x_obj, &mtx_index_obj->x_obj.ob_pd, gensym("matrix"),gensym(""));
error("[mtx_index]: this object is likely to change! not really for use yet");
return ((void *) mtx_index_obj);
}
static void mTXIndexBang (MTXindex *mtx_index_obj)
{
if (mtx_index_obj->list_out)
outlet_anything(mtx_index_obj->list_outlet, gensym("matrix"),
mtx_index_obj->index_size+2, mtx_index_obj->list_out);
}
/*
static void copyList (int size, t_atom *x, t_atom *y)
{
while(size--)
*y++=*x++;
}
*/
static int copyAtomToIntegerArrayMax (int n, t_atom *x, int *y)
{
int max = atom_getint(x);
for (;n--;x++,y++) {
*y = atom_getint (x);
max = (*y > max)?*y:max;
}
return max;
}
static void setAtomListConstFloat (int n, t_atom *x, t_float f)
{
for (;n--;x++)
SETFLOAT(x,f);
}
static void writeIndexedValuesIntoList (int n, int *index, t_atom *x, t_atom *y)
{
for (;n--;index++,y++)
if (*index)
*y = x[*index-1];
}
static void mTXIndexRightMatrix (MTXindex *mtx_index_obj, t_symbol *s,
int argc, t_atom *argv)
{
int rows = atom_getint (argv++);
int columns = atom_getint (argv++);
int size = rows * columns;
int list_size = argc - 2;
t_atom *list_in = argv;
t_atom *list_out = mtx_index_obj->list_out;
int *index_in = mtx_index_obj->index_in;
int max;
// size check
if (!size) {
post("mtx_index: invalid dimensions");
return;
}
else if (list_size<size) {
post("mtx_index: sparse matrix not yet supported: use \"mtx_check\"");
return;
}
if (size != mtx_index_obj->index_size) {
if (!index_in)
index_in = (int *) getbytes (sizeof (int) * (size + 2));
else
index_in = (int *) resizebytes (index_in,
sizeof (int) * (mtx_index_obj->index_size+2),
sizeof (int) * (size + 2));
if (!list_out)
list_out = (t_atom *) getbytes (sizeof (t_atom) * (size + 2));
else
list_out = (t_atom *) resizebytes (list_out,
sizeof (t_atom) * (mtx_index_obj->index_size+2),
sizeof (t_atom) * (size + 2));
}
mtx_index_obj->index_size = size;
mtx_index_obj->index_columns = columns;
mtx_index_obj->index_rows = rows;
mtx_index_obj->list_out = list_out;
mtx_index_obj->index_in = index_in;
max = copyAtomToIntegerArrayMax (size, list_in, index_in);
mtx_index_obj->max_index = max;
}
static void mTXIndexMatrix (MTXindex *mtx_index_obj, t_symbol *s,
int argc, t_atom *argv)
{
int rows = atom_getint (argv++);
int columns = atom_getint (argv++);
int size = rows * columns;
int list_size = argc - 2;
t_atom *list_in = argv;
t_atom *list_out = mtx_index_obj->list_out;
int index_rows = mtx_index_obj->index_rows;
int index_columns = mtx_index_obj->index_columns;
int *index = mtx_index_obj->index_in;
// size check
if (!size) {
post("mtx_index: invalid dimensions");
return;
}
else if (list_size<size) {
post("mtx_index: sparse matrix not yet supported: use \"mtx_check\"");
return;
}
if (size < mtx_index_obj->max_index) {
post("mtx_index: index exceeds matrix dimensions");
return;
}
if ((!index)||(mtx_index_obj->index_size == 0)) {
post("mtx_index: index with what? no right matrix defined");
return;
}
// main part
list_out += 2;
setAtomListConstFloat (mtx_index_obj->index_size, list_out, mtx_index_obj->fill_value);
writeIndexedValuesIntoList (mtx_index_obj->index_size, index,list_in,list_out);
list_out = mtx_index_obj->list_out;
SETSYMBOL(list_out, gensym("matrix"));
SETFLOAT(list_out, index_rows);
SETFLOAT(&list_out[1], index_columns);
outlet_anything(mtx_index_obj->list_outlet, gensym("matrix"),
mtx_index_obj->index_size+2, list_out);
}
void mtx_index_setup (void)
{
mtx_index_class = class_new
(gensym("mtx_index"),
(t_newmethod) newMTXIndex,
(t_method) deleteMTXIndex,
sizeof (MTXindex),
CLASS_DEFAULT, A_GIMME, 0);
class_addbang (mtx_index_class, (t_method) mTXIndexBang);
class_addmethod (mtx_index_class, (t_method) mTXIndexMatrix, gensym("matrix"), A_GIMME,0);
class_addmethod (mtx_index_class, (t_method) mTXIndexRightMatrix, gensym(""), A_GIMME,0);
}
void iemtx_index_setup(void){
mtx_index_setup();
}
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