From c050bb9a7595860bf72e7c407ff3e8cbd7e77480 Mon Sep 17 00:00:00 2001
From: Cyrille Henry <nusmuk@users.sourceforge.net>
Date: Fri, 9 Apr 2004 16:55:47 +0000
Subject: This commit was generated by cvs2svn to compensate for changes in
 r1590, which included commits to RCS files with non-trunk default branches.

svn path=/trunk/externals/pmpd/; revision=1591
---
 src/tLine2D.c | 137 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 137 insertions(+)
 create mode 100755 src/tLine2D.c

(limited to 'src/tLine2D.c')

diff --git a/src/tLine2D.c b/src/tLine2D.c
new file mode 100755
index 0000000..f440bfd
--- /dev/null
+++ b/src/tLine2D.c
@@ -0,0 +1,137 @@
+#include "m_pd.h"
+#include "math.h"
+
+static t_class *tLine2D_class;
+
+typedef struct _tLine2D {
+  t_object  x_obj;
+  t_float  X1, X2, Y1, Y2, P, P_old;
+  //extrem =  Xmin, Ymin, Xmax, Ymax;
+  t_outlet *force_new;// outlet
+  t_outlet *profondeur;// outlet
+  t_outlet *vitesse;// outlet
+} t_tLine2D;
+
+void tLine2D_position2D(t_tLine2D *x, t_float X, t_float Y)
+{
+	t_float a1, b1, c1, profondeur, tmp;
+
+	b1 = x->X2 - x->X1;
+	a1 = -x->Y2 + x->Y1;
+
+	if (!((a1==0) & (b1==0)))
+	{
+		tmp = sqrt((a1*a1)+(b1*b1));			// = longueur du vecteur pour renormalisation
+		a1 = a1/tmp;
+		b1 = b1/tmp;
+		c1 = a1*x->X1+b1*x->Y1;
+
+		profondeur = ( (a1 * X)  + (b1 *   Y) )  - c1;
+
+		tmp = profondeur - x->P_old;
+
+		x->P_old = profondeur;
+
+		outlet_float(x->vitesse, tmp);
+
+		outlet_float(x->profondeur, profondeur);
+
+		if ( ( profondeur  < 0) & (profondeur >  - x->P) )
+		{
+		outlet_float(x->force_new, 1);
+		}
+		else
+		{
+		outlet_float(x->force_new, 0);
+		}
+	}
+	else
+	{
+	outlet_float(x->force_new, 0);
+	}
+
+}
+
+void tLine2D_Xmin(t_tLine2D *x, t_float X)
+{
+   x->X1= X;
+}
+
+void tLine2D_Xmax(t_tLine2D *x, t_float X)
+{
+   x->X2= X;
+}
+
+void tLine2D_Ymin(t_tLine2D *x, t_float X)
+{
+   x->Y1= X;
+}
+
+void tLine2D_Ymax(t_tLine2D *x, t_float X)
+{
+   x->Y2= X;
+}
+
+void tLine2D_P(t_tLine2D *x, t_float X)
+{
+   x->P= X;
+}
+
+void *tLine2D_new(t_symbol *s, int argc, t_atom *argv)
+{
+  t_tLine2D *x = (t_tLine2D *)pd_new(tLine2D_class);
+
+  x->force_new=outlet_new(&x->x_obj, 0);
+  x->profondeur=outlet_new(&x->x_obj, 0);
+  x->vitesse=outlet_new(&x->x_obj, 0);
+
+  x->P_old=0;
+
+  if (argc>=5)
+    x->P = atom_getfloatarg(4, argc, argv);
+  else
+    x->P = 1;
+
+    if (argc>=4)
+    x->Y2 = atom_getfloatarg(3, argc, argv);
+  else
+    x->Y2 = 0;
+  
+  if (argc>=3)
+    x->X2 = atom_getfloatarg(2, argc, argv);
+  else
+    x->X2 = 1;
+
+  if (argc>=2)
+    x->Y1 = atom_getfloatarg(1, argc, argv);
+  else
+    x->Y1 = 0;
+
+
+  if (argc>=1)
+    x->X1 = atom_getfloatarg(0, argc, argv);
+  else
+    x->X1 = -1;
+
+  return (x);
+}
+
+void tLine2D_setup(void) 
+{
+
+  tLine2D_class = class_new(gensym("tLine2D"),
+        (t_newmethod)tLine2D_new,
+        0, sizeof(t_tLine2D),
+        CLASS_DEFAULT, A_GIMME, 0);
+
+  class_addcreator((t_newmethod)tLine2D_new, gensym("pmpd.tLine2D"), A_GIMME, 0);
+
+  class_addmethod(tLine2D_class, (t_method)tLine2D_position2D, gensym("position2D"), A_DEFFLOAT, A_DEFFLOAT, 0);
+
+  class_addmethod(tLine2D_class, (t_method)tLine2D_Xmin, gensym("setX1"), A_DEFFLOAT, 0);
+  class_addmethod(tLine2D_class, (t_method)tLine2D_Ymin, gensym("setY1"), A_DEFFLOAT, 0);
+  class_addmethod(tLine2D_class, (t_method)tLine2D_Xmax, gensym("setX2"), A_DEFFLOAT, 0);
+  class_addmethod(tLine2D_class, (t_method)tLine2D_Ymax, gensym("setY2"), A_DEFFLOAT, 0);
+ class_addmethod(tLine2D_class, (t_method)tLine2D_P, gensym("setPmax"), A_DEFFLOAT, 0);
+
+}
-- 
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