*** empty log message ***

svn path=/trunk/externals/nusmuk/; revision=2745

8 files changed, 2018 insertions, 0 deletions

diff --git a/msd2D/01_msd2Dtest.pd b/msd2D/01_msd2Dtest.pd
new file mode 100644
index 0000000..8471b97
--- /dev/null
+++ b/msd2D/01_msd2Dtest.pd
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new file mode 100644
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new file mode 100644
index 0000000..d2c6b09
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+#X text 351 396 SET RIGIDITY AND VISCOSITY OF LINKS;
+#X text 367 442 ADD FORCE ON ALL MOBILE MASSES;
+#X obj 47 547 cnv 15 400 200 empty empty empty 20 12 0 14 -261689 -66577
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+#X obj 261 122 / 12.5;
+#X obj 261 145 - 4;
+#X obj 123 194 pack f f;
+#X msg 123 217 \$1 \$2 0;
+#X obj 207 193 pack f f;
+#X msg 207 216 \$1 \$2 0;
+#X connect 0 0 9 0;
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+#X connect 17 0 18 0;
+#X connect 18 0 10 2;
+#X restore 53 614 pd linkrender;
+#X text 465 563 1 CREATE WINDOW -->;
+#X text 464 626 3 AND DESTROY IT! -->;
+#X text 464 594 2 DRAG THE STRUCTURE WITH THE MOUSE;
+#N canvas 731 296 450 300 gemmouse 0;
+#X obj 189 77 gemmouse;
+#X obj 189 184 pack f f;
+#X obj 189 218 spigot;
+#X obj 103 244 outlet;
+#X obj 189 131 - 0;
+#X obj 216 131 + 100;
+#X obj 189 108 / 5;
+#X obj 216 108 / -5;
+#X obj 79 51 inlet;
+#X obj 140 75 inlet;
+#X obj 141 120 l;
+#X obj 109 98 t b;
+#X connect 0 0 6 0;
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+#X connect 9 0 10 1;
+#X connect 10 0 3 0;
+#X connect 11 0 10 0;
+#X restore 53 674 pd gemmouse;
+#X obj 53 653 gemhead;
+#X msg 53 695 posX fix \$1;
+#X msg 53 716 posY fix \$2;
+#X text 204 677 SET FIXED MASS TO MOUSE POSITION;
+#X msg 186 150 mass mob 1 100 \$1 \$2;
+#X obj 135 42 t b b b b b b;
+#X msg 135 234 iLink inter mob mob 1 2.5 0.5;
+#X msg 186 116 20 50 \, 23 61 \, 29 71 \, 39 77 \, 50 80 \, 61 77 \,
+71 71 \, 77 61 \, 80 50 \, 77 39 \, 71 29 \, 61 23 \, 50 20 \, 39 23
+\, 29 29 \, 23 39;
+#X text 413 87 CREATION : 17 MASSES \, 2 iLINKS;
+#X msg 152 215 iLink intf fix mob 10 2.5 0.5;
+#X msg 625 711 0.9 0.9 0.9;
+#X obj 53 562 route linksPos;
+#X msg 53 345 bang \, get linksPos;
+#X text 292 313 COMPUTE AND GET ALL LINKS POSITIONS;
+#X text 260 572 DISPLAY LINKS WITH GEM;
+#X connect 0 0 40 0;
+#X connect 3 0 2 0;
+#X connect 4 0 5 0;
+#X connect 6 0 2 0;
+#X connect 7 0 46 0;
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+#X connect 21 0 7 0;
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+#X connect 24 0 7 0;
+#X connect 25 0 7 0;
+#X connect 34 0 36 0;
+#X connect 34 0 37 0;
+#X connect 35 0 34 0;
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+#X connect 39 0 9 0;
+#X connect 40 0 41 0;
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+#X connect 46 0 30 0;
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diff --git a/msd2D/04_msd2Dperf.pd b/msd2D/04_msd2Dperf.pd
new file mode 100644
index 0000000..8f90db2
--- /dev/null
+++ b/msd2D/04_msd2Dperf.pd
@@ -0,0 +1,207 @@
+#N canvas 291 84 827 783 10;
+#X obj 167 310 t a;
+#X obj 167 33 bng 15 250 50 0 empty empty empty 0 -6 0 8 -262144 -1
+-1;
+#X msg 239 84 reset;
+#X obj 52 15 loadbang;
+#X text 205 34 reset;
+#X msg 281 402 forceX mob 100;
+#X obj 167 55 t b b b b b;
+#X obj 313 658 print msd;
+#X obj 52 583 msd2D --------------------------------;
+#X msg 461 409 0 \, destroy;
+#X obj 481 320 gemhead;
+#X obj 481 343 world_light;
+#X msg 221 104 mass fix 0 100 50 50;
+#N canvas 311 224 450 300 gemmouse 0;
+#X obj 31 26 gemmouse;
+#X obj 31 133 pack f f;
+#X obj 31 167 spigot;
+#X obj 31 193 outlet;
+#X obj 31 80 - 0;
+#X obj 82 94 + 100;
+#X obj 31 57 / 5;
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+#X connect 5 0 1 1;
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+#X connect 7 0 5 0;
+#X restore 393 540 pd gemmouse;
+#X obj 360 524 gemhead;
+#X obj 360 575 l;
+#X obj 360 552 t b;
+#X msg 360 602 posX fix \$1;
+#X msg 360 623 posY fix \$2;
+#X msg 185 192 50 50;
+#X msg 167 261 Xmax 100 \, Xmin 0 \, Ymax 100 \, Ymin 0;
+#X msg 460 386 reset \, create \, lighting 1 \, 1;
+#X obj 52 301 t b;
+#N canvas 643 123 605 590 massrender 0;
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+#X obj 127 86 / 12.5;
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+#X obj 48 177 separator;
+#X obj 48 153 any;
+#X obj 127 57 unpack f f;
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+#X connect 1 0 2 0;
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+#X connect 5 0 6 0;
+#X connect 6 0 1 2;
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+#X connect 10 0 3 0;
+#X connect 10 1 5 0;
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+#X msg 207 216 \$1 \$2 0;
+#X connect 0 0 9 0;
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+#X restore 52 656 pd linkrender;
+#X msg 211 170 mass mob 1 \$1 \$2 \$3;
+#X obj 379 180 random 100;
+#X msg 380 158 seed 1;
+#X obj 379 221 random 100;
+#X obj 470 179 random 100;
+#X msg 379 200 seed 2;
+#X msg 470 157 seed 3;
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+#X obj 568 204 t f b;
+#X msg 622 148 -1;
+#X obj 591 148 f -1;
+#X obj 582 248 pack f f;
+#X obj 380 134 t b b b;
+#X msg 167 284 link souple \$1 \$2 100 0.5 0.5;
+#X obj 52 278 gemhead;
+#X obj 413 432 gemwin;
+#X msg 52 335 bang \, get massesPos \, get linksPos;
+#X obj 52 606 route linksPos massesPos;
+#X msg 465 433 view 0 0 4 0 0 0 0 1 0;
+#X msg 281 425 forceX mob -100;
+#X obj 380 109 repeat 500;
+#X obj 592 105 repeat 500;
+#X msg 445 53 500;
+#X text 478 52 change number of mass to test performance;
+#X connect 0 0 8 0;
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+#X connect 38 1 36 0;
+#X connect 39 0 40 1;
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+#X connect 41 0 43 0;
+#X connect 42 0 29 0;
+#X connect 42 1 28 0;
+#X connect 42 2 26 0;
+#X connect 43 0 0 0;
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+#X connect 51 0 34 0;
+#X connect 52 0 50 1;
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diff --git a/msd2D/Makefile.am b/msd2D/Makefile.am
new file mode 100644
index 0000000..59a3dff
--- /dev/null
+++ b/msd2D/Makefile.am
@@ -0,0 +1,51 @@
+#
+# automake template
+# added by tim blechmann
+#
+
+NAME = msd2
+
+BUILT_SOURCES = main.cpp
+
+EXTRA_DIST = main.cpp \
+	$(NAME).mcp \
+	$(NAME).vcproj
+
+CXXFLAGS  = @CXXFLAGS@ \
+	@OPT_FLAGS@ \
+	@INCLUDEDIR@ \
+	-I../../source \
+	$(DEFS) \
+	-DFLEXT_SHARED
+
+LDFLAGS = @DYNAMIC_LDFLAGS@ @LDFLAGS@ \
+	$(patsubst %,-framework %,$(FRAMEWORKS))
+
+LIBS = @LIBS@ -lflext-pd
+
+FRAMEWORKS = @FRAMEWORKS@
+
+TARGETDIR = @TARGETDIR@
+
+TARGET =$(NAME).@EXTENSION@
+
+OBJECTS = $(patsubst %.cpp,./%.@OBJEXT@,$(BUILT_SOURCES))
+
+SYSDIR = @SYSDIR@
+
+
+# ----------------------------- targets --------------------------------
+
+all-local: $(OBJECTS)
+	$(CXX) $(LDFLAGS) ./*.@OBJEXT@ $(LIBS) -o ../$(TARGETDIR)/$(TARGET)
+	strip --strip-unneeded ../$(TARGETDIR)/$(TARGET)
+
+./%.@OBJEXT@ : %.cpp 
+	$(CXX) -c $(CXXFLAGS) $< -o $@
+
+clean-local:
+	rm -f ../$(TARGETDIR)/$(TARGET)
+	rm -f ./$(OBJECTS)
+
+install-exec-local:
+	install ../$(TARGET) $(SYSDIR)extra
diff --git a/msd2D/help-msd2D.pd b/msd2D/help-msd2D.pd
new file mode 100644
index 0000000..9662c14
--- /dev/null
+++ b/msd2D/help-msd2D.pd
@@ -0,0 +1,78 @@
+#N canvas 0 0 823 885 10;
+#X obj 51 13 cnv 15 610 305 empty empty CREATION 20 12 0 14 -262131
+-66577 0;
+#X msg 68 42 reset;
+#X text 238 73 Add a mass;
+#X text 324 74 \$1 : Id (symbol);
+#X text 323 94 \$2 : fixed or mobile (0/1);
+#X text 323 112 \$3 : mass;
+#X text 323 150 \$1 : Id (symbol);
+#X text 235 150 Add a link;
+#X text 322 170 \$2 : creation No of mass1;
+#X text 322 188 \$3 : creation No of mass2;
+#X text 321 206 \$4 : rigidity;
+#X text 240 43 Delete all masses and links;
+#X text 321 224 \$5 : viscosity;
+#X text 321 241 \$6 : damping;
+#X obj 51 323 cnv 15 610 60 empty empty COMPUTATION 20 12 0 14 -261689
+-66577 0;
+#X msg 71 352 bang;
+#X text 224 352 Compute new masses positions;
+#X obj 50 387 cnv 15 610 220 empty empty DYNAMIC_SETTING 20 12 0 14
+-262131 -66577 0;
+#X msg 158 409 setD \$1 \$2;
+#X text 343 427 \$1 : Id (symbol);
+#X text 343 445 \$2 : New value;
+#X msg 76 409 setK \$1 \$2;
+#X text 339 481 \$1 : Id (symbol);
+#X text 339 499 \$2 : New value;
+#X text 337 538 \$1 : Id (symbol);
+#X text 337 556 \$2 : New value;
+#X msg 76 461 posX \$1 \$2;
+#X text 339 463 Set position of mass(es);
+#X text 336 521 Add force on mass(es);
+#X msg 74 520 forceX \$1 \$2;
+#X msg 244 409 setD2 \$1 \$2;
+#X text 343 409 Set rigidity \, viscosity or damping of link(s);
+#X obj 49 616 cnv 15 610 198 empty empty GET_ATTRIBUTES 20 12 0 14
+-261689 -66577 0;
+#X msg 135 643 massePosL;
+#X msg 135 671 masseForcesL;
+#X text 236 643 output all masses positions in a list on outlet No
+1;
+#X text 235 672 output all masses forces in a list on outlet No 1;
+#X msg 134 709 get \$1 \$2;
+#X text 237 710 Get specific attribute;
+#X text 237 735 \$1 : Attribute type ( massesPos / massesSpeeds / massesForces
+/ linksPos );
+#X text 237 772 \$2 : Id (symbol or creations numbers);
+#X msg 65 150 link \$1 \$2 \$3 \$4 \$5 \$6;
+#X msg 64 257 deleteMass \$1;
+#X text 229 259 Delete a mass and associated links;
+#X text 319 276 \$1 : Creation No of mass;
+#X msg 63 293 deleteLink \$1;
+#X text 228 295 Delete a link;
+#X text 329 295 \$1 : Creation No of link;
+#X msg 132 792 infosL;
+#X text 235 792 Get infos on all masses and links on outlet No 2;
+#X text 336 592 \$1 : Value;
+#X obj 22 820 msd2D;
+#X msg 169 519 forceY \$1 \$2;
+#X msg 158 461 posY \$1 \$2;
+#X msg 68 73 mass \$1 \$2 \$3 \$4 \$5;
+#X text 323 130 \$4 \, \$5 : position;
+#X msg 73 572 Xmin \$1 \, Xmax \$1 \, Ymin \$1 \, Ymax \$1;
+#X text 336 575 Set minimimum and maximum of masses positions;
+#X connect 1 0 51 0;
+#X connect 15 0 51 0;
+#X connect 21 0 51 0;
+#X connect 26 0 51 0;
+#X connect 29 0 51 0;
+#X connect 33 0 51 0;
+#X connect 34 0 51 0;
+#X connect 37 0 51 0;
+#X connect 41 0 51 0;
+#X connect 42 0 51 0;
+#X connect 45 0 51 0;
+#X connect 48 0 51 0;
+#X connect 54 0 51 0;
diff --git a/msd2D/main.cpp b/msd2D/main.cpp
new file mode 100755
index 0000000..9c8460a
--- /dev/null
+++ b/msd2D/main.cpp
@@ -0,0 +1,865 @@
+
+
+/* 
+ msd2D - mass spring damper model for Pure Data or Max/MSP
+
+ Written by Nicolas Montgermont for a Master's train in Acoustic,
+ Signal processing and Computing Applied to Music (ATIAM, Paris 6) 
+ at La Kitchen supervised by Cyrille Henry.
+
+ Based on Pure Data by Miller Puckette and others
+ Use FLEXT C++ Layer by Thomas Grill (xovo@gmx.net)
+ Based on pmpd by Cyrille Henry 
+
+
+ Contact : Nicolas Montgermont, montgermont@la-kitchen.fr
+	   Cyrille Henry, Cyrille.Henry@la-kitchen.fr
+
+ This program is free software; you can redistribute it and/or                

+ modify it under the terms of the GNU General Public License                  

+ as published by the Free Software Foundation; either version 2               

+ of the License, or (at your option) any later version.                       

+                                                                             

+ This program is distributed in the hope that it will be useful,              

+ but WITHOUT ANY WARRANTY; without even the implied warranty of               

+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the                

+ GNU General Public License for more details.                           

+                                                                              

+ You should have received a copy of the GNU General Public License           

+ along with this program; if not, write to the Free Software                  

+ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
+ Version 0.01, 12.04.2005
+
+*/
+
+// include flext header
+#include <flext.h>
+
+#include <math.h>
+
+// define constants
+#define MSD2D_VERSION 0.01
+#define nb_max_link   4000

+#define nb_max_mass   4000

+#define Id_length   20
+
+// check for appropriate flext version
+#if !defined(FLEXT_VERSION) || (FLEXT_VERSION < 401)
+#error You need at least flext version 0.4.1
+#endif
+
+#define max(a,b) ( ((a) > (b)) ? (a) : (b) ) 

+#define min(a,b) ( ((a) < (b)) ? (a) : (b) )
+
+typedef struct _mass {

+	t_symbol *Id;
+	t_int nbr;
+	t_int mobile;

+	t_float invM;

+	t_float speedX;

+	t_float posX;
+	t_float posX2;

+	t_float forceX;
+	t_float out_forceX;
+	t_float speedY;

+	t_float posY;
+	t_float posY2;

+	t_float forceY;
+	t_float out_forceY;
+	char Id_string[Id_length];

+} t_mass;

+

+typedef struct _link {

+	t_symbol *Id;
+	t_int nbr;

+	t_mass *mass1;

+	t_mass *mass2;

+	t_float K1, D1, D2;
+	t_float longx, longy, longueur;
+	t_float distance_old;
+	char Id_string[Id_length];

+} t_link;
+
+class msd2D:
+	public flext_base
+{
+	FLEXT_HEADER_S(msd2D,flext_base,setup)	//class with setup
+ 
+public:
+	// constructor with no arguments
+	msd2D(int argc,t_atom *argv)
+	{
+		nb_link = 0;
+		nb_mass = 0;
+		id_mass = 0;
+		id_link = 0;
+
+		// --- define inlets and outlets ---
+		AddInAnything("bang, reset, etc."); 	// default inlet
+		AddOutAnything("infos on masses");	// outlet for integer count
+		AddOutAnything("control");		// outlet for bang
+	}
+
+protected:
+
+// ---------------------------------------------------------------  RESET 
+
+	void m_reset() 
+	{ 
+		t_int i;
+		t_atom sortie[0];
+
+		for (i=0; i<nb_mass; i++)	{
+			delete mass[i];
+			}
+		for (i=0; i<nb_link; i++)	{
+			delete link[i];
+			}
+		ToOutAnything(1,gensym("Reset"),0,sortie);
+		nb_link = 0;

+		nb_mass = 0;
+		id_mass = 0;
+		id_link = 0;
+	}
+
+// --------------------------------------------------------------  COMPUTE 
+
+	void m_bang()
+	{
+		t_float F=0,Fx=0,Fy=0,distance,vitesse, X_new, Y_new;

+		t_int i;
+		struct _mass mass_1, mass_2;

+	
+		for (i=0; i<nb_link; i++)	{

+		// compute link forces
+			distance = sqrt(pow(link[i]->mass1->posX-link[i]->mass2->posX,2) + 
+				pow(link[i]->mass1->posY-link[i]->mass2->posY,2));
+			F  = link[i]->K1 * (distance - link[i]->longueur) ;	// F = k1(x1-x2)
+			F += link[i]->D1 * (distance - link[i]->distance_old) ;	// F = F + D1(v1-v2)
+			if (distance != 0) 	{
+				Fx = F * (link[i]->mass1->posX - link[i]->mass2->posX)/distance;
+				Fy = F * (link[i]->mass1->posY - link[i]->mass2->posY)/distance;
+			}

+			link[i]->mass1->forceX -= Fx;
+			link[i]->mass1->forceX -= link[i]->D2*link[i]->mass1->speedX;

+			link[i]->mass2->forceX += Fx;
+			link[i]->mass2->forceX -= link[i]->D2*link[i]->mass2->speedX;
+			link[i]->mass1->forceY -= Fy;
+			link[i]->mass1->forceY -= link[i]->D2*link[i]->mass1->speedY;

+			link[i]->mass2->forceY += Fy;
+			link[i]->mass2->forceY -= link[i]->D2*link[i]->mass2->speedY;
+			link[i]->distance_old = distance;
+		}
+

+		for (i=0; i<nb_mass; i++)

+		// compute new masses position only if mobile = 1

+			if (mass[i]->mobile == 1)  		{

+				X_new = mass[i]->forceX * mass[i]->invM + 2*mass[i]->posX - mass[i]->posX2;
+				mass[i]->posX2 = mass[i]->posX;
+				mass[i]->posX = max(min(X_new,Xmax),Xmin);			// x = x + v
+				mass[i]->speedX = mass[i]->posX - mass[i]->posX2;	// v = v + F/M
+				Y_new = mass[i]->forceY * mass[i]->invM + 2*mass[i]->posY - mass[i]->posY2;
+				mass[i]->posY2 = mass[i]->posY;
+				mass[i]->posY = max(min(Y_new,Ymax),Ymin);			// x = x + v
+				mass[i]->speedY = mass[i]->posY - mass[i]->posY2;	// v = v + F/M
+				}
+
+		for (i=0; i<nb_mass; i++)	{

+		// clear forces
+			mass[i]->out_forceX = mass[i]->forceX;

+			mass[i]->forceX = 0;
+			mass[i]->out_forceY = mass[i]->forceY;

+			mass[i]->forceY = 0;
+		}

+	}
+
+// --------------------------------------------------------------  MASSES
+
+	void m_mass(int argc,t_atom *argv) 

+	// add a mass

+	// Id, nbr, mobile, invM, speedX, posX, forceX

+	{
+		t_atom sortie[6], aux[2];
+		int M;
+
+		mass[nb_mass] = new t_mass;			// new pointer

+		mass[nb_mass]->Id = GetASymbol(argv[0]);	// ID
+		mass[nb_mass]->mobile = GetAInt(argv[1]);	// mobile
+		if (GetAInt(argv[2])==0)
+			M=1;
+		else M = GetAInt(argv[2]);			
+		mass[nb_mass]->invM = 1/((float)M);		// invM
+		mass[nb_mass]->speedX = 0;			// vx[n]

+		mass[nb_mass]->posX = GetAInt(argv[3]);		// x[n]
+		mass[nb_mass]->posX2 = GetAInt(argv[3]);	// x[n-1]

+		mass[nb_mass]->forceX = 0;			// Fx[n]
+		mass[nb_mass]->speedY = 0;			// vy[n]

+		mass[nb_mass]->posY = GetAInt(argv[4]);		// y[n]
+		mass[nb_mass]->posY2 = GetAInt(argv[4]);	// y[n-1]

+		mass[nb_mass]->forceY = 0;			// Fy[n]
+		mass[nb_mass]->nbr = id_mass;			// id_nbr
+		SETSYMBOL(aux,GetASymbol(argv[0]));
+		atom_string(aux,mass[nb_mass]->Id_string,Id_length);
+		nb_mass++ ;
+		id_mass++;

+		nb_mass = min ( nb_max_mass -1, nb_mass );
+		SETFLOAT(&(sortie[0]),id_mass-1);
+		SETSYMBOL(&(sortie[1]),GetASymbol(argv[0]));
+		SETFLOAT(&(sortie[2]),mass[nb_mass-1]->mobile);
+		SETFLOAT(&(sortie[3]),M);
+		SETFLOAT(&(sortie[4]),mass[nb_mass-1]->posX);
+		SETFLOAT(&(sortie[5]),mass[nb_mass-1]->posY);
+		ToOutAnything(1,gensym("Mass"),6,sortie);
+	}
+
+	void m_forceX(int argc,t_atom *argv) 

+	{

+	// add a force to mass(es) named Id
+		t_int i,aux;
+		t_atom atom[2];
+		char buffer[Id_length];
+
+		SETSYMBOL(atom,GetASymbol(argv[0]));
+		atom_string(atom, buffer, Id_length);
+		for (i=0; i<nb_mass;i++)
+		{
+			aux = strcmp(buffer,mass[i]->Id_string);
+			if (aux == 0)
+				mass[i]->forceX += GetAFloat(argv[1]);
+		}
+	}
+
+	void m_forceY(int argc,t_atom *argv) 

+	{

+	// add a force to mass(es) named Id
+		t_int i,aux;
+		t_atom atom[2];
+		char buffer[Id_length];
+
+		SETSYMBOL(atom,GetASymbol(argv[0]));
+		atom_string(atom, buffer, Id_length);
+		for (i=0; i<nb_mass;i++)
+		{
+			aux = strcmp(buffer,mass[i]->Id_string);
+			if (aux == 0)
+				mass[i]->forceY += GetAFloat(argv[1]);
+		}
+	}
+
+	void m_posX(int argc,t_atom *argv) 
+	{

+	// displace mass(es) named Id to a certain position

+		t_int i,aux;
+		t_atom atom[2];
+		char buffer[Id_length];
+
+		if (GetAFloat(argv[1]) < Xmax && GetAFloat(argv[1]) > Xmin)
+		{
+			SETSYMBOL(atom,GetASymbol(argv[0]));
+			atom_string(atom, buffer, Id_length);
+			for (i=0; i<nb_mass;i++)
+			{
+				aux = strcmp(buffer,mass[i]->Id_string);
+				if (aux == 0)
+					mass[i]->posX = GetAFloat(argv[1]);
+			}
+		}
+	}
+
+	void m_posY(int argc,t_atom *argv) 
+	{

+	// displace mass(es) named Id to a certain position

+		t_int i,aux;
+		t_atom atom[2];
+		char buffer[Id_length];
+
+		if (GetAFloat(argv[1]) < Ymax && GetAFloat(argv[1]) > Ymin)
+		{
+			SETSYMBOL(atom,GetASymbol(argv[0]));
+			atom_string(atom, buffer, Id_length);
+			for (i=0; i<nb_mass;i++)
+			{
+				aux = strcmp(buffer,mass[i]->Id_string);
+				if (aux == 0)
+					mass[i]->posY = GetAFloat(argv[1]);
+			}
+		}
+	}
+
+	void m_set_mobile(int argc,t_atom *argv) 
+	{

+	// set mass No to mobile

+		t_int i,aux;
+		
+		aux = GetAInt(argv[0]);	
+		for (i=0; i<nb_mass;i++)
+			{
+				if (mass[i]->nbr == aux)
+					mass[i]->mobile = 1;
+			}
+	
+	}
+
+	void m_set_fixe(int argc,t_atom *argv) 
+	{

+	// set mass No to fixed

+		t_int i,aux;
+		
+		aux = GetAInt(argv[0]);	
+		for (i=0; i<nb_mass;i++)
+			{
+				if (mass[i]->nbr == aux)
+					mass[i]->mobile = 0;
+			}
+	
+	}
+
+	void m_delete_mass(int argc,t_atom *argv) 
+	{
+	// Delete mass
+	t_int i,nb_link_delete=0;
+	t_atom sortie[6], aux[nb_link];
+	
+	for (i=0; i<nb_link;i++)	{
+		if (link[i]->mass1->nbr == GetAInt(argv[0]) || link[i]->mass2->nbr == GetAInt(argv[0]))	{
+			SETFLOAT(&(aux[nb_link_delete]),link[i]->nbr);
+			nb_link_delete++;
+		}
+	}
+
+	for (i=0; i<nb_link_delete;i++)
+		m_delete_link(1,&aux[i]);
+
+
+	for (i=0; i<nb_mass;i++)
+		if (mass[i]->nbr == GetAInt(argv[0]))	{
+			SETFLOAT(&(sortie[0]),mass[i]->nbr);
+			SETSYMBOL(&(sortie[1]),mass[i]->Id);
+			SETFLOAT(&(sortie[2]),mass[i]->mobile);
+			SETFLOAT(&(sortie[3]),1/mass[i]->invM);
+			SETFLOAT(&(sortie[4]),mass[i]->posX);
+			SETFLOAT(&(sortie[5]),mass[i]->posY);
+			delete mass[i];
+			mass[i] = mass[nb_mass-1];
+			nb_mass--;
+			ToOutAnything(1,gensym("Mass deleted"),6,sortie);
+			break;
+		}
+	}
+
+
+	void m_Xmax(int argc,t_atom *argv) 
+	{

+	// set damping of link(s) named Id
+	Xmax = GetAFloat(argv[0]);
+	}
+
+	void m_Ymax(int argc,t_atom *argv) 
+	{

+	// set damping of link(s) named Id
+	Ymax = GetAFloat(argv[0]);
+	}
+
+	void m_Xmin(int argc,t_atom *argv) 
+	{

+	// set damping of link(s) named Id
+	Xmin = GetAFloat(argv[0]);
+	}
+
+	void m_Ymin(int argc,t_atom *argv) 
+	{

+	// set damping of link(s) named Id
+	Ymin = GetAFloat(argv[0]);
+	}
+
+// --------------------------------------------------------------  LINKS 
+
+	void m_link(int argc,t_atom *argv) 
+	// add a link

+	// Id, nbr, *mass1, *mass2, K1, D1

+	{

+		t_atom sortie[7], aux[2];
+		t_int i;
+
+		link[nb_link] = new t_link;
+		link[nb_link]->Id = GetASymbol(argv[0]);
+		for (i=0; i<nb_mass;i++)
+			if (mass[i]->nbr==GetAInt(argv[1]))
+				link[nb_link]->mass1 = mass[i];
+			else if(mass[i]->nbr==GetAInt(argv[2]))
+				link[nb_link]->mass2 = mass[i];
+		link[nb_link]->K1 = GetAFloat(argv[3]);

+		link[nb_link]->D1 = GetAFloat(argv[4]);	
+		link[nb_link]->D2 = GetAFloat(argv[5]);
+		link[nb_link]->longx = link[nb_link]->mass1->posX - link[nb_link]->mass2->posX;
+		link[nb_link]->longy = link[nb_link]->mass1->posY - link[nb_link]->mass2->posY;
+		link[nb_link]->longueur = sqrt( pow(link[nb_link]->longx,2) + pow(link[nb_link]->longy,2));
+		link[nb_link]->nbr = id_link;
+		link[nb_link]->distance_old = link[nb_link]->longueur;
+		SETSYMBOL(aux,GetASymbol(argv[0]));
+		atom_string(aux,(link[nb_link]->Id_string),Id_length);
+		nb_link++;
+		id_link++;

+		nb_link = min ( nb_max_link -1, nb_link );
+		SETFLOAT(&(sortie[0]),id_link-1);
+		SETSYMBOL(&(sortie[1]),link[nb_link-1]->Id);
+		SETFLOAT(&(sortie[2]),GetAInt(argv[1]));
+		SETFLOAT(&(sortie[3]),GetAInt(argv[2]));
+		SETFLOAT(&(sortie[4]),link[nb_link-1]->K1);
+		SETFLOAT(&(sortie[5]),link[nb_link-1]->D1);
+		SETFLOAT(&(sortie[6]),link[nb_link-1]->D2);
+		ToOutAnything(1,gensym("Link"),7,sortie);

+	}
+
+	void m_ilink(int argc,t_atom *argv) 
+	// add interactor link

+	// Id, nbr, Id masses1, Id masses2, K1, D1

+	{

+		t_atom aux[2], arglist[6];
+		t_int i,j, strvalue, strvalue2, imass1[nb_mass], nbmass1=0, imass2[nb_mass], nbmass2=0;
+		char buffer[Id_length], buffer2[Id_length];
+
+		ToOutAnything(1,gensym("iLink"),0,aux);
+		SETSYMBOL(aux,GetASymbol(argv[1]));
+		atom_string(aux, buffer, Id_length);
+		SETSYMBOL(aux,GetASymbol(argv[2]));
+		atom_string(aux, buffer2, Id_length);
+
+		for (i=0;i<nb_mass;i++)	{
+			strvalue=strcmp(buffer,mass[i]->Id_string);
+			strvalue2=strcmp(buffer2,mass[i]->Id_string);
+			if (strvalue ==0)	{
+				imass1[nbmass1]=i;
+				nbmass1++;
+			}
+			if (strvalue2 ==0)	{
+				imass2[nbmass2]=i;
+				nbmass2++;
+			}
+		}
+		
+		for(i=0;i<nbmass1;i++)
+			for(j=0;j<nbmass2;j++)	
+				if (imass1[i] != imass2[j])	{
+					SETSYMBOL(&(arglist[0]),GetASymbol(argv[0]));
+					SETFLOAT(&(arglist[1]),mass[imass1[i]]->nbr);
+					SETFLOAT(&(arglist[2]),mass[imass2[j]]->nbr);
+					SETFLOAT(&(arglist[3]),GetAInt(argv[3]));
+					SETFLOAT(&(arglist[4]),GetAFloat(argv[4]));
+					SETFLOAT(&(arglist[5]),GetAFloat(argv[5]));
+					m_link(6,arglist);
+				}
+	}
+
+	void m_setK(int argc,t_atom *argv) 
+	{

+	// set rigidity of link(s) named Id
+		t_int i,aux;
+		t_atom atom[2];
+		char buffer[Id_length];
+
+		SETSYMBOL(atom,GetASymbol(argv[0]));
+		atom_string(atom, buffer, Id_length);
+		for (i=0; i<nb_link;i++)
+		{
+			aux = strcmp(buffer,link[i]->Id_string);
+			if (aux == 0)
+				link[i]->K1 = GetAFloat(argv[1]);
+		}
+	}
+
+	void m_setD(int argc,t_atom *argv) 
+	{

+	// set damping of link(s) named Id
+		t_int i,aux;
+		t_atom atom[2];
+		char buffer[Id_length];
+
+		SETSYMBOL(atom,GetASymbol(argv[0]));
+		atom_string(atom, buffer, Id_length);
+		for (i=0; i<nb_link;i++)
+		{
+			aux = strcmp(buffer,link[i]->Id_string);
+			if (aux == 0)
+				link[i]->D1 = GetAFloat(argv[1]);
+		}
+	}
+
+	void m_setD2(int argc,t_atom *argv) 
+	{

+	// set damping of link(s) named Id
+		t_int i,aux;
+		t_atom atom[2];
+		char buffer[Id_length];
+
+		SETSYMBOL(atom,GetASymbol(argv[0]));
+		atom_string(atom, buffer, Id_length);
+		for (i=0; i<nb_link;i++)
+		{
+			aux = strcmp(buffer,link[i]->Id_string);
+			if (aux == 0)
+				link[i]->D2 = GetAFloat(argv[1]);
+		}
+	}
+
+	void m_delete_link(int argc,t_atom *argv) 
+	{
+	// Delete link
+	t_int i;
+	t_atom sortie[7];
+
+	for (i=0; i<nb_link;i++)
+		if (link[i]->nbr == GetAInt(argv[0]))	{
+			SETFLOAT(&(sortie[0]),link[i]->nbr);
+			SETSYMBOL(&(sortie[1]),link[i]->Id);
+			SETFLOAT(&(sortie[2]),link[i]->mass1->nbr);
+			SETFLOAT(&(sortie[3]),link[i]->mass2->nbr);
+			SETFLOAT(&(sortie[4]),link[i]->K1);
+			SETFLOAT(&(sortie[5]),link[i]->D1);
+			SETFLOAT(&(sortie[6]),link[i]->D2);
+			delete link[i];
+			link[i]=link[nb_link-1];
+			nb_link--;
+			ToOutAnything(1,gensym("Link deleted"),7,sortie);
+			break;
+		}
+	}
+
+
+// --------------------------------------------------------------  GET 
+
+	void m_get(int argc,t_atom *argv)
+	// get attributes
+	{
+		t_int i,j, auxstring1, auxstring2, auxstring3, aux;
+		t_symbol *auxarg;
+		t_atom sortie[4],atom[2];
+		char buffer[Id_length],masses[]="massesPos",buffer2[Id_length], forces[] = "massesForces", links[] = "linksPos";
+
+		SETSYMBOL(atom,GetASymbol(argv[0]));
+		atom_string(atom, buffer, 20);
+		auxstring1 = strcmp(buffer,masses);	//auxstring1 : 0 masses, 1 else
+		auxstring2 = strcmp(buffer,forces);	//auxstring2 : 0 forces, 1 else
+		auxstring3 = strcmp(buffer,links);	//auxstring2 : 0 links, 1 else
+		auxarg = GetASymbol(argv[1]);		//auxarg : & symbol, 0 else
+		if (argc == 1)
+		{
+			if (auxstring1 == 0)// get all masses positions
+				for (i=0; i<nb_mass; i++)
+				{
+					SETFLOAT(&sortie[0],mass[i]->posX);
+					SETFLOAT(&sortie[1],mass[i]->posY);
+					ToOutAnything(0,gensym("massesPos"),2,sortie);
+				}
+			else if (auxstring2 == 0)// get all masses forces
+				for (i=0; i<nb_mass; i++)
+				{
+					SETFLOAT(&sortie[0],mass[i]->out_forceX);
+					SETFLOAT(&sortie[1],mass[i]->out_forceY);
+					ToOutAnything(0,gensym("massesForces"),2,sortie);
+				}
+			else if (auxstring3 == 0)// get all links positions
+				for (i=0; i<nb_link; i++)
+				{
+					SETFLOAT(&sortie[0],link[i]->mass1->posX);
+					SETFLOAT(&sortie[1],link[i]->mass1->posY);
+					SETFLOAT(&sortie[2],link[i]->mass2->posX);
+					SETFLOAT(&sortie[3],link[i]->mass2->posY);
+					ToOutAnything(0,gensym("linksPos"),4,sortie);
+				}
+			else 		// get all masses speeds
+				for (i=0; i<nb_mass; i++)
+				{
+					SETFLOAT(&sortie[0],mass[i]->speedX);
+					SETFLOAT(&sortie[1],mass[i]->speedY);
+					ToOutAnything(0,gensym("massesSpeeds"),2,sortie);
+				}
+		}
+		else if (auxstring1 == 0) // get mass positions
+		{
+			if (auxarg == 0) // No
+			{
+				for (j = 1; j<argc; j++)
+					for (i=0;i<nb_mass;i++)
+						if (mass[i]->nbr==GetAInt(argv[j]))
+						{
+							SETFLOAT(&sortie[0],mass[i]->posX);
+							SETFLOAT(&sortie[1],mass[i]->posY);
+							ToOutAnything(0,gensym("massesPosNo"),2,sortie);
+						}
+			}
+			else 		//string
+			{
+				for (j = 1; j<argc; j++)
+				{
+					SETSYMBOL(&atom[1],GetASymbol(argv[j]));
+					atom_string(&atom[1], buffer2, Id_length);
+					for (i=0;i<nb_mass;i++)	
+					{
+						
+						aux = strcmp(buffer2,mass[i]->Id_string);
+						if (aux==0)
+						{
+							SETFLOAT(&sortie[0],mass[i]->posX);
+							SETFLOAT(&sortie[1],mass[i]->posY);
+							ToOutAnything(0,gensym("massesPosId"),2,sortie);
+						}
+					}
+				}
+			}
+		}
+		else if (auxstring2 == 0)			 // get mass forces
+		{
+			if (auxarg == 0) // No
+			{
+				for (j = 1; j<argc; j++)
+					for (i=0;i<nb_mass;i++)
+						if (mass[i]->nbr==GetAInt(argv[j]))
+						{
+							SETFLOAT(&sortie[0],mass[i]->out_forceX);
+							SETFLOAT(&sortie[1],mass[i]->out_forceY);
+							ToOutAnything(0,gensym("massesForcesNo"),2,sortie);
+						}
+			}
+			else 		//string
+			{
+				for (j = 1; j<argc; j++)
+				{
+					SETSYMBOL(&atom[1],GetASymbol(argv[j]));
+					atom_string(&atom[1], buffer2, Id_length);
+					for (i=0;i<nb_mass;i++)	
+					{
+		
+						aux = strcmp(buffer2,mass[i]->Id_string);
+						if (aux==0)
+						{
+							SETFLOAT(&sortie[0],mass[i]->out_forceX);
+							SETFLOAT(&sortie[1],mass[i]->out_forceY);
+							ToOutAnything(0,gensym("massesForcesId"),2,sortie);
+						}
+					}
+				}
+			}
+		}
+		else if (auxstring3 == 0)			 // get links positions
+		{
+			if (auxarg == 0) // No
+			{
+				for (j = 1; j<argc; j++)
+					for (i=0;i<nb_link;i++)
+						if (link[i]->nbr==GetAInt(argv[j]))
+						{
+							SETFLOAT(&sortie[0],link[i]->mass1->posX);
+							SETFLOAT(&sortie[1],link[i]->mass1->posY);
+							SETFLOAT(&sortie[2],link[i]->mass2->posX);
+							SETFLOAT(&sortie[3],link[i]->mass2->posY);
+							ToOutAnything(0,gensym("linksPosNo"),4,sortie);
+						}
+			}
+			else 		//string
+			{
+				for (j = 1; j<argc; j++)
+				{
+					SETSYMBOL(&atom[1],GetASymbol(argv[j]));
+					atom_string(&atom[1], buffer2, Id_length);
+					for (i=0;i<nb_link;i++)	
+					{
+		
+						aux = strcmp(buffer2,link[i]->Id_string);
+						if (aux==0)
+						{
+							SETFLOAT(&sortie[0],link[i]->mass1->posX);
+							SETFLOAT(&sortie[1],link[i]->mass1->posY);
+							SETFLOAT(&sortie[2],link[i]->mass2->posX);
+							SETFLOAT(&sortie[3],link[i]->mass2->posY);
+							ToOutAnything(0,gensym("linksPosId"),4,sortie);
+						}
+					}
+				}
+			}
+		}
+		else 			 // get mass speeds
+		{
+			if (auxarg == 0) // No
+			{
+				for (j = 1; j<argc; j++)
+					for (i=0;i<nb_mass;i++)
+						if (mass[i]->nbr==GetAInt(argv[j]))
+						{
+							SETFLOAT(&sortie[0],mass[i]->speedX);
+							SETFLOAT(&sortie[1],mass[i]->speedY);
+							ToOutAnything(0,gensym("massesSpeedsNo"),2,sortie);
+						}
+			}
+			else 		//string
+			{
+				for (j = 1; j<argc; j++)
+				{
+					SETSYMBOL(&atom[1],GetASymbol(argv[j]));
+					atom_string(&atom[1], buffer2, Id_length);
+					for (i=0;i<nb_mass;i++)	
+					{
+		
+						aux = strcmp(buffer2,mass[i]->Id_string);
+						if (aux==0)
+						{
+							SETFLOAT(&sortie[0],mass[i]->speedX);
+							SETFLOAT(&sortie[1],mass[i]->speedY);
+							ToOutAnything(0,gensym("massesSpeedsId"),2,sortie);
+						}
+					}
+				}
+			}
+		}
+		
+
+	}
+
+	void m_mass_dumpl()
+	// List of masses positions on first outlet
+	{	
+		t_atom sortie[2*nb_mass];
+		t_int i;
+	
+		for (i=0; i<nb_mass; i++)	{
+			SETFLOAT(&(sortie[2*i]),mass[i]->posX);
+			SETFLOAT(&(sortie[2*i+1]),mass[i]->posY);
+		}
+		ToOutAnything(0, gensym("massesPosL"), 2*nb_mass, sortie);
+	}
+
+	void m_force_dumpl()
+	// List of masses positions on first outlet
+	{	
+		t_atom sortie[2*nb_mass];
+		t_int i;
+	
+		for (i=0; i<nb_mass; i++)	{
+			SETFLOAT(&(sortie[2*i]),mass[i]->out_forceX);
+			SETFLOAT(&(sortie[2*i+1]),mass[i]->out_forceY);
+		}
+		ToOutAnything(0, gensym("massesForcesL"), 2*nb_mass, sortie);
+	}
+
+	void m_link_dumpl()
+	// List of masses positions on first outlet
+	{	
+		t_atom sortie[2*nb_link];
+		t_int i;
+	
+		for (i=0; i<nb_link; i++)	{
+			SETFLOAT(&(sortie[2*i]),link[i]->mass1->nbr);
+			SETFLOAT(&(sortie[2*i+1]),link[i]->mass2->nbr);
+		}
+		ToOutAnything(0, gensym("linksMassesL"), 2*nb_link, sortie);
+	}
+
+	void m_info_dumpl()
+	// List of masses positions on first outlet
+	{	
+		t_atom sortie[7];
+		t_int i;
+	
+		for (i=0; i<nb_mass; i++)	{
+			SETFLOAT(&(sortie[0]),mass[i]->nbr);
+			SETSYMBOL(&(sortie[1]),mass[i]->Id);
+			SETFLOAT(&(sortie[2]),mass[i]->mobile);
+			SETFLOAT(&(sortie[3]),1/mass[i]->invM);
+			SETFLOAT(&(sortie[4]),mass[i]->posX);
+			SETFLOAT(&(sortie[5]),mass[i]->posY);
+		ToOutAnything(1, gensym("Mass"), 6, sortie);
+		}
+
+		for (i=0; i<nb_link; i++)	{
+			SETFLOAT(&(sortie[0]),link[i]->nbr);
+			SETSYMBOL(&(sortie[1]),link[i]->Id);
+			SETFLOAT(&(sortie[2]),link[i]->mass1->nbr);
+			SETFLOAT(&(sortie[3]),link[i]->mass2->nbr);
+			SETFLOAT(&(sortie[4]),link[i]->K1);
+			SETFLOAT(&(sortie[5]),link[i]->D1);
+			SETFLOAT(&(sortie[6]),link[i]->D2);
+		ToOutAnything(1, gensym("Link"), 7, sortie);
+		}
+
+	}
+
+// --------------------------------------------------------------  GLOBAL VARIABLES 
+
+	t_link * link[nb_max_link];

+	t_mass * mass[nb_max_mass];
+	t_float Xmin, Xmax, Ymin, Ymax;
+	int nb_link, nb_mass, id_mass, id_link;
+
+// --------------------------------------------------------------  SETUP
+
+private:
+
+	static void setup(t_classid c)
+	{
+		// --- set up meth(i=0; i<nb_link;i++)ods (class scope) ---
+
+		// register a bang method to the default inlet (0)
+		FLEXT_CADDBANG(c,0,m_bang);
+
+		// set up tagged methods for the default inlet (0)
+		// the underscore _ after CADDMETHOD indicates that a message tag is used
+		// no, variable list or anything and all single arguments are recognized automatically, ...
+		FLEXT_CADDMETHOD_(c,0,"reset",m_reset);
+		FLEXT_CADDMETHOD_(c,0,"forceX",m_forceX);
+		FLEXT_CADDMETHOD_(c,0,"forceY",m_forceY);
+		FLEXT_CADDMETHOD_(c,0,"posX",m_posX);
+		FLEXT_CADDMETHOD_(c,0,"Xmax",m_Xmax);
+		FLEXT_CADDMETHOD_(c,0,"Xmin",m_Xmin);
+		FLEXT_CADDMETHOD_(c,0,"Ymax",m_Ymax);
+		FLEXT_CADDMETHOD_(c,0,"Ymin",m_Ymin);
+		FLEXT_CADDMETHOD_(c,0,"posY",m_posY);
+		FLEXT_CADDMETHOD_(c,0,"setK",m_setK);
+		FLEXT_CADDMETHOD_(c,0,"setD",m_setD);
+		FLEXT_CADDMETHOD_(c,0,"setD2",m_setD2);
+		FLEXT_CADDMETHOD_(c,0,"mass",m_mass);
+		FLEXT_CADDMETHOD_(c,0,"link",m_link);
+		FLEXT_CADDMETHOD_(c,0,"iLink",m_ilink);
+		FLEXT_CADDMETHOD_(c,0,"get",m_get);
+		FLEXT_CADDMETHOD_(c,0,"deleteLink",m_delete_link);
+		FLEXT_CADDMETHOD_(c,0,"deleteMass",m_delete_mass);
+		FLEXT_CADDMETHOD_(c,0,"massesPosL",m_mass_dumpl);
+		FLEXT_CADDMETHOD_(c,0,"infosL",m_info_dumpl);
+		FLEXT_CADDMETHOD_(c,0,"linksMassesL",m_link_dumpl);
+		FLEXT_CADDMETHOD_(c,0,"massesForcesL",m_force_dumpl);
+		FLEXT_CADDMETHOD_(c,0,"setMobile",m_set_mobile);
+		FLEXT_CADDMETHOD_(c,0,"setFixed",m_set_fixe);
+	}
+
+	// for every registered method a callback has to be declared
+	FLEXT_CALLBACK(m_bang)
+	FLEXT_CALLBACK(m_mass_dumpl)
+	FLEXT_CALLBACK(m_force_dumpl)
+	FLEXT_CALLBACK(m_link_dumpl)
+	FLEXT_CALLBACK(m_info_dumpl)
+	FLEXT_CALLBACK(m_reset)
+	FLEXT_CALLBACK_V(m_mass)
+	FLEXT_CALLBACK_V(m_link)
+	FLEXT_CALLBACK_V(m_ilink)
+	FLEXT_CALLBACK_V(m_set_mobile)
+	FLEXT_CALLBACK_V(m_set_fixe)
+	FLEXT_CALLBACK_V(m_Xmax)
+	FLEXT_CALLBACK_V(m_Xmin)
+	FLEXT_CALLBACK_V(m_Ymax)
+	FLEXT_CALLBACK_V(m_Ymin)
+	FLEXT_CALLBACK_V(m_setK)
+	FLEXT_CALLBACK_V(m_setD)
+	FLEXT_CALLBACK_V(m_setD2)
+	FLEXT_CALLBACK_V(m_forceX)
+	FLEXT_CALLBACK_V(m_forceY)
+	FLEXT_CALLBACK_V(m_posX)
+	FLEXT_CALLBACK_V(m_posY)
+	FLEXT_CALLBACK_V(m_get)
+	FLEXT_CALLBACK_V(m_delete_link)
+	FLEXT_CALLBACK_V(m_delete_mass)
+};
+
+// instantiate the class (constructor has a variable argument list)
+FLEXT_NEW_V("msd2D",msd2D)
+
+
diff --git a/msd2D/package.txt b/msd2D/package.txt
new file mode 100644
index 0000000..2a14acc
--- /dev/null
+++ b/msd2D/package.txt
@@ -0,0 +1,2 @@
+NAME=msd2D

+SRCS=main.cpp