From d8736fef3f30c718aa04d3578a190c47602ef93a Mon Sep 17 00:00:00 2001
From: Cyrille Henry <nusmuk@users.sourceforge.net>
Date: Sat, 30 Aug 2014 14:01:56 +0000
Subject: new addL message to increase / decrease link length

svn path=/trunk/externals/pmpd/; revision=17344
---
 pmpd_set.c | 65 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)

(limited to 'pmpd_set.c')

diff --git a/pmpd_set.c b/pmpd_set.c
index 4234345..03d3225 100644
--- a/pmpd_set.c
+++ b/pmpd_set.c
@@ -338,6 +338,71 @@ void pmpd_setL(t_pmpd *x, t_symbol *s, int argc, t_atom *argv)
 	}
 }
 
+void pmpd_addL(t_pmpd *x, t_symbol *s, int argc, t_atom *argv)
+{
+    int tmp, i;
+    t_garray *a;
+    int npoints, n;
+    t_word *vec;
+    t_float K;
+    
+    if ( (argc == 2) && ( argv[0].a_type == A_FLOAT ) && ( argv[1].a_type == A_FLOAT ) )
+    {
+        tmp = atom_getfloatarg(0, argc, argv);
+        tmp = max(0, min( x->nb_link-1, tmp));
+        x->link[tmp].L += atom_getfloatarg(1, argc, argv);
+    }
+    else if ( (argc == 2) && ( argv[0].a_type == A_SYMBOL ) && ( argv[1].a_type == A_FLOAT ) )
+    {
+        for (i=0; i< x->nb_link; i++)
+        {
+            if ( atom_getsymbolarg(0,argc,argv) == x->link[i].Id)
+            {
+                x->link[i].L += atom_getfloatarg(1, argc, argv);
+            }
+        }
+    }
+    else if ( ( argv[0].a_type == A_FLOAT ) && ( argc == 1 ) )
+    {
+        tmp = atom_getfloatarg(0, argc, argv);
+        tmp = max(0, min( x->nb_link-1, tmp));
+        x->link[tmp].L += x->link[tmp].mass2->posX - x->link[tmp].mass1->posX;
+    }
+    else if ( ( argv[0].a_type == A_SYMBOL ) && ( argc == 1 ) )
+    {
+        for (i=0; i< x->nb_link; i++)
+        {
+            if ( atom_getsymbolarg(0,argc,argv) == x->link[i].Id)
+            {
+                x->link[i].L += x->link[i].mass2->posX - x->link[i].mass1->posX;
+            }
+        }
+    }
+    else if ( (argc >= 2) && ( argv[0].a_type == A_SYMBOL ) && ( argv[1].a_type == A_SYMBOL ) )
+    {
+		K=1;
+		if ((argc >= 3) && ( argv[2].a_type == A_FLOAT )) K=atom_getfloatarg(2, argc, argv);
+		if (!(a = (t_garray *)pd_findbyclass(atom_getsymbolarg(1,argc,argv), garray_class)))
+			pd_error(x, "%s: no such array", atom_getsymbolarg(1,argc,argv)->s_name);
+		else if (!garray_getfloatwords(a, &npoints, &vec))
+			pd_error(x, "%s: bad template for tabLink", atom_getsymbolarg(1,argc,argv)->s_name);
+		else
+		{
+			n=0;
+			for (i=0; i < x->nb_link; i++)
+			{
+				if ( atom_getsymbolarg(0,argc,argv) == x->link[i].Id)
+				{
+					x->link[i].L += K*vec[n].w_float;
+					// post("linkL %d = table %d : %f", i, n, vec[n].w_float);
+					n++;
+					if (n >= npoints) break;
+				}
+			}
+		}
+	}
+}
+
 void pmpd_setLCurrent(t_pmpd *x, t_symbol *s, int argc, t_atom *argv)
 {
     int tmp, i;
-- 
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