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/*
* iemmatrix
*
* objects for manipulating simple matrices
* mostly refering to matlab/octave matrix functions
*
* (c) IOhannes m zmölnig, forum::für::umläute
*
* IEM, Graz
*
* this code is published under the LGPL
*
*/
#include "iemmatrix.h"
/* mtx_element */
static t_class *mtx_element_class;
static void mtx_element_list2(t_matrix *x, t_floatarg f1, t_floatarg f2)
{
int r = f1, c= f2;
if(r<0)r=0;
if(c<0)c=0;
x->current_row = r;
x->current_col = c;
}
static void mtx_element_matrix(t_matrix *x, t_symbol *s, int argc, t_atom *argv)
{
int row, col;
if (argc<2){ post("matrix : corrupt matrix passed"); return; }
row = atom_getfloat(argv);
col = atom_getfloat(argv+1);
if ((row<1)||(col<1)){ post("matrix : corrupt matrix passed"); return; }
if (row*col > argc-2){ post("matrix: sparse matrices not yet supported : use \"mtx_check\""); return; }
matrix_matrix2(x, s, argc, argv);
matrix_bang(x);
}
static void mtx_element_float(t_matrix *x, t_floatarg f)
{
if(x->current_col>x->col || x->current_row>x->row){
error("mtx_element: element position exceeds matrix dimensions");
return;
}
if(x->current_row == 0 && x->current_col == 0){
matrix_set(x, f);
matrix_bang(x);
return;
}
if(x->current_row*x->current_col)SETFLOAT(x->atombuffer+1+(x->current_row-1)*x->col+x->current_col, f);
else {
t_atom *ap=x->atombuffer+2;
int count;
if (!x->current_col){
ap+=x->col*(x->current_row-1);
count=x->col;
while(count--)SETFLOAT(&ap[count], f);
} else { // x->current_row==0
ap+=x->current_col-1;
count=x->row;
while(count--)SETFLOAT(&ap[count*x->col], f);
}
}
matrix_bang(x);
}
static void *mtx_element_new(t_symbol *s, int argc, t_atom *argv)
{
t_matrix *x = (t_matrix *)pd_new(mtx_element_class);
int i, j, q;
outlet_new(&x->x_obj, 0);
inlet_new(&x->x_obj, &x->x_obj.ob_pd, gensym("float"), gensym(""));
x->current_row=x->current_col=0;
x->col=x->row=0;
x->atombuffer=0;
switch (argc) {
case 1:
i = atom_getfloat(argv);
if (i<0)i=0;
if(i)adjustsize(x, i, i);
matrix_set(x, 0);
break;
case 2:
i = atom_getfloat(argv++);if(i<0)i=0;
j = atom_getfloat(argv++);if(j<0)j=0;
if(i*j)adjustsize(x, i, j);
matrix_set(x, 0);
break;
case 4:
i = atom_getfloat(argv++);if(i<0)i=0;
j = atom_getfloat(argv++);if(j<0)j=0;
if(i*j)adjustsize(x, i, j);
matrix_set(x, 0);
q = atom_getfloat(argv++);if(q<0)q=0;
x->current_row=q;
q = atom_getfloat(argv++);if(q<0)q=0;
x->current_col=q;
break;
default:;
}
return (x);
}
void mtx_element_setup(void)
{
mtx_element_class = class_new(gensym("mtx_element"), (t_newmethod)mtx_element_new,
(t_method)matrix_free, sizeof(t_matrix), 0, A_GIMME, 0);
class_addbang (mtx_element_class, matrix_bang);
class_addfloat (mtx_element_class, mtx_element_float);
class_addmethod(mtx_element_class, (t_method)mtx_element_matrix, gensym("matrix"), A_GIMME, 0);
class_addmethod(mtx_element_class, (t_method)mtx_element_list2, gensym(""), A_FLOAT, A_FLOAT, 0);
class_sethelpsymbol(mtx_element_class, gensym("iemmatrix/mtx_element"));
}
void iemmtx_element_setup(void)
{
mtx_element_setup();
}
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