From 208200ef713d588a1cb5c4d125b2bfccc9a7e2ce Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?IOhannes=20m=20zm=C3=B6lnig?= Date: Mon, 19 Sep 2005 14:47:50 +0000 Subject: added a bunch of new objects (from f.zotter); some of them are unstable, some are likely to change in their behaviour (read: not yet for use) svn path=/trunk/externals/iem/iemmatrix/; revision=3598 --- src/mtx_diff.c | 232 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 232 insertions(+) create mode 100644 src/mtx_diff.c (limited to 'src/mtx_diff.c') diff --git a/src/mtx_diff.c b/src/mtx_diff.c new file mode 100644 index 0000000..3f491ad --- /dev/null +++ b/src/mtx_diff.c @@ -0,0 +1,232 @@ +/* + * 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_diff_class; + +typedef struct _MTXdiff_ MTXdiff; +struct _MTXdiff_ +{ + t_object x_obj; + int rows; + int columns; + int size; + int diff_dimension; + int diff_direction; + + t_outlet *list_outlet; + + t_atom *list_out; + t_atom *list_in; + t_float *x; + t_float *y; +}; + +static void deleteMTXdiff (MTXdiff *mtx_diff_obj) +{ + if (mtx_diff_obj->list_out) + freebytes (mtx_diff_obj->list_out, sizeof(t_atom)*(mtx_diff_obj->size+2)); + if (mtx_diff_obj->x) + freebytes (mtx_diff_obj->x, sizeof(t_float)*(mtx_diff_obj->size)); + if (mtx_diff_obj->y) + freebytes (mtx_diff_obj->y, sizeof(t_float)*(mtx_diff_obj->size)); +} + +static void mTXSetdiffDirection (MTXdiff *mtx_diff_obj, t_float c_dir) +{ + int direction = (int) c_dir; + mtx_diff_obj->diff_direction = (direction==-1)?direction:1; +} +static void mTXSetdiffDimension (MTXdiff *mtx_diff_obj, t_float c_dim) +{ + int dimension = (int) c_dim; + mtx_diff_obj->diff_dimension = (dimension==2)?dimension:1; +} + +static void *newMTXdiff (t_symbol *s, int argc, t_atom *argv) +{ + MTXdiff *mtx_diff_obj = (MTXdiff *) pd_new (mtx_diff_class); + int c_dir = 1; + int c_dim = 1; + + mtx_diff_obj->diff_dimension = c_dim; + switch ((argc>2)?2:argc) { + case 2: + c_dir = atom_getint(argv+1); + case 1: + c_dim = atom_getint(argv); + } + mTXSetdiffDirection (mtx_diff_obj, (t_float) c_dir); + mTXSetdiffDimension (mtx_diff_obj, (t_float) c_dim); + + mtx_diff_obj->list_outlet = outlet_new (&mtx_diff_obj->x_obj, gensym("matrix")); + return ((void *) mtx_diff_obj); +} + +static void mTXdiffBang (MTXdiff *mtx_diff_obj) +{ + if (mtx_diff_obj->list_out) + outlet_anything(mtx_diff_obj->list_outlet, gensym("matrix"), + mtx_diff_obj->size+2, mtx_diff_obj->list_out); +} + +static void writeFloatIntoList (int n, t_atom *l, t_float *f) +{ + for (;n--;f++, l++) + SETFLOAT (l, *f); +} +static void readFloatFromList (int n, t_atom *l, t_float *f) +{ + while (n--) + *f++ = atom_getfloat (l++); +} +static void readFloatFromListModulo (int n, int m, t_atom *l, t_float *f) +{ + t_atom *ptr = l; + int count1, count2; + n /= m; + count1 = m; + while (count1--) + for (count2 = n, ptr = l++; count2--; ptr += m, f++) + *f = atom_getfloat (ptr); +} +static void writeFloatIntoListModulo (int n, int m, t_atom *l, t_float *f) +{ + t_atom *ptr = l; + int count1, count2; + n /= m; + count1 = m; + while (count1--) + for (count2 = n, ptr = l++; count2--; ptr += m, f++) + SETFLOAT(ptr,*f); +} + +static void diff (int n, t_float *x, t_float *y) +{ + *y++ = *x++; + for (;--n; x++, y++) + *y = *x - *(x-1); +} +static void diffReverse (int n, t_float *x, t_float *y) +{ + *y-- = *x--; + for (;--n; x--, y--) + *y = *x - *(x+1); +} + +static void mTXdiffMatrix (MTXdiff *mtx_diff_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_ptr = argv; + t_atom *list_out = mtx_diff_obj->list_out; + t_float *x = mtx_diff_obj->x; + t_float *y = mtx_diff_obj->y; + int count; + + // size check + if (!size) { + post("mtx_diff: invalid dimensions"); + return; + } + else if (list_sizesize) { + x = (t_float *) resizebytes (x, + sizeof (t_float) * (mtx_diff_obj->size), + sizeof (t_float) * (size)); + y = (t_float *) resizebytes (y, + sizeof (t_float) * (mtx_diff_obj->size), + sizeof (t_float) * (size)); + list_out = (t_atom *) resizebytes (list_out, + sizeof (t_atom) * (mtx_diff_obj->size+2), + sizeof (t_atom) * (size + 2)); + } + mtx_diff_obj->size = size; + mtx_diff_obj->rows = rows; + mtx_diff_obj->columns = columns; + mtx_diff_obj->list_out = list_out; + mtx_diff_obj->x = x; + mtx_diff_obj->y = y; + + // main part + // reading matrix from inlet + if (mtx_diff_obj->diff_dimension == 2) { + readFloatFromListModulo (size, columns, list_ptr, x); + columns = mtx_diff_obj->rows; + rows = mtx_diff_obj->columns; + } + else + readFloatFromList (size, list_ptr, x); + + // calculating diff + if (mtx_diff_obj->diff_direction == -1) { + x += columns-1; + y += columns-1; + for (count = rows; count--; x += columns, y += columns) + diffReverse (columns,x,y); + } + else + for (count = rows; count--; x += columns, y += columns) + diff (columns,x,y); + x = mtx_diff_obj->x; + y = mtx_diff_obj->y; + + // writing matrix to outlet + if (mtx_diff_obj->diff_dimension == 2) { + columns = mtx_diff_obj->columns; + rows = mtx_diff_obj->rows; + writeFloatIntoListModulo (size, columns, list_out+2, y); + } + else + writeFloatIntoList (size, list_out+2, y); + + SETSYMBOL(list_out, gensym("matrix")); + SETFLOAT(list_out, rows); + SETFLOAT(&list_out[1], columns); + outlet_anything(mtx_diff_obj->list_outlet, gensym("matrix"), + mtx_diff_obj->size+2, list_out); +} + +void mtx_diff_setup (void) +{ + mtx_diff_class = class_new + (gensym("mtx_diff"), + (t_newmethod) newMTXdiff, + (t_method) deleteMTXdiff, + sizeof (MTXdiff), + CLASS_DEFAULT, A_GIMME, 0); + class_addbang (mtx_diff_class, (t_method) mTXdiffBang); + class_addmethod (mtx_diff_class, (t_method) mTXdiffMatrix, gensym("matrix"), A_GIMME,0); + class_addmethod (mtx_diff_class, (t_method) mTXSetdiffDimension, gensym("dimension"), A_DEFFLOAT,0); + class_addmethod (mtx_diff_class, (t_method) mTXSetdiffDirection, gensym("direction"), A_DEFFLOAT,0); + class_sethelpsymbol (mtx_diff_class, gensym("iemmatrix/mtx_diff")); +} + +void iemtx_diff_setup(void){ + mtx_diff_setup(); +} -- cgit v1.2.1