1 files changed, 103 insertions, 0 deletions
diff --git a/src/mtx_resize.c b/src/mtx_resize.c
new file mode 100644
index 0000000..edc2e17
--- /dev/null
+++ b/src/mtx_resize.c
@@ -0,0 +1,103 @@
+/*
+ *  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_resize */
+
+static t_class *mtx_resize_class;
+static void mtx_resize_list2(t_matrix *x, t_symbol *s, int argc, t_atom *argv)
+{
+  int r, c;
+  if (argc<1)return;
+  if (argc>2)error("mtx_resize : only rows & cols are needed, skipping the rest");
+  if (argc==1)r=c=atom_getfloat(argv++);
+  else{
+    r=atom_getfloat(argv++);
+    c=atom_getfloat(argv++);
+  }
+
+  if (r<0)r=0;
+  if (c<0)c=0;
+
+  x->current_row = r;
+  x->current_col = c;
+}
+
+static void mtx_resize_matrix(t_matrix *x, t_symbol *s, int argc, t_atom *argv)
+{
+  int row=atom_getfloat(argv);
+  int col=atom_getfloat(argv+1);
+  int r = x->current_row, c = x->current_col;
+  int R=0, ROW, COL;
+
+  if (argc<2){    post("mtx_add: crippled matrix");    return;  }
+  if ((col<1)||(row<1)) {    post("mtx_add: invalid dimensions");    return;  }
+  if (col*row>argc-2){    post("sparse matrix not yet supported : use \"mtx_check\"");    return;  }
+
+  if (!r)r=row;
+  if (!c)c=col;
+
+  if (r==row && c==col) { // no need to change
+    outlet_anything(x->x_obj.ob_outlet, gensym("matrix"), argc, argv);
+    return;
+  }
+
+  x->atombuffer=(t_atom *)getbytes((c*r+2)*sizeof(t_atom));
+  setdimen(x, r, c);
+  matrix_set(x, 0);
+
+  ROW=(r<row)?r:row;
+  COL=(c<col)?c:col;
+  R=ROW;
+  while(R--)memcpy(x->atombuffer+2+(ROW-R-1)*c, argv+2+(ROW-R-1)*col, COL*sizeof(t_atom));
+      
+  matrix_bang(x);
+
+  freebytes(x->atombuffer, (c*r+2)*sizeof(t_atom));
+}
+
+static void *mtx_resize_new(t_symbol *s, int argc, t_atom *argv)
+{
+  t_matrix *x = (t_matrix *)pd_new(mtx_resize_class);
+  int c=0, r=0;
+
+  if(argc){
+    if(argc-1){
+      r=atom_getfloat(argv);
+      c=atom_getfloat(argv+1);
+    } else r=c=atom_getfloat(argv);
+    if(c<0)c=0;
+    if(r<0)r=0;
+  }
+  inlet_new(&x->x_obj, &x->x_obj.ob_pd, gensym("float"), gensym(""));
+  outlet_new(&x->x_obj, 0);
+  x->current_row = r;
+  x->current_col = c;
+  x->row = x->col= 0;
+  x->atombuffer  = 0;
+
+  return (x);
+}
+void mtx_resize_setup(void)
+{
+  mtx_resize_class = class_new(gensym("mtx_resize"), (t_newmethod)mtx_resize_new, 
+			       0, sizeof(t_matrix), 0, A_GIMME, 0);
+  class_addmethod  (mtx_resize_class, (t_method)mtx_resize_matrix, gensym("matrix"), A_GIMME, 0);
+  class_addmethod  (mtx_resize_class, (t_method)mtx_resize_list2,  gensym(""), A_GIMME, 0);
+  class_sethelpsymbol(mtx_resize_class, gensym("iemmatrix/mtx_size"));
+}
+void iemtx_resize_setup(void){
+  mtx_resize_setup();
+}
+