1 files changed, 2 insertions, 1064 deletions

diff --git a/msd2D/main.cpp b/msd2D/main.cpp
index 0c5f3fb..4539810 100755
--- a/msd2D/main.cpp
+++ b/msd2D/main.cpp
@@ -1,1065 +1,3 @@
+#include "../msd.h"
 
-
-/* 
- msd2D - mass spring damper model for Pure Data or Max/MSP
-
- Copyright (C) 2005  Nicolas Montgermont
- 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 library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- This library 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
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with this library; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
-
- Version 0.05 -- 28.04.2005
-*/
-
-// include flext header
-#include <flext.h>
-#include <math.h>
-
-// define constants
-#define MSD2D_VERSION 0.05
-#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) )
-
-#ifdef _MSC_VER
-#define NEWARR(type,var,size) type *var = new type[size]
-#define DELARR(var) delete[] var
-#else
-#define NEWARR(type,var,size) type var[size]
-#define DELARR(var) ((void)0)
-#endif
-
-
-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;
-} 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, long_min, long_max;
-	t_float distance_old;
-} t_link;
-
-
-inline t_float sqr(t_float x) { return x*x; }
-
-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;
-		mouse_grab=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_mass **mi;
-		t_link **li;
-
-		for (i=0, mi=mass; i<nb_mass; mi++, i++)	{
-			delete (*mi);
-			}
-		for (i=0, li=link; i<nb_link; li++, i++)	{
-			delete (*li);
-			}
-		ToOutAnything(1,S_Reset,0,NULL);
-		nb_link = 0;
-		nb_mass = 0;
-		id_mass = 0;
-		id_link = 0;
-	}
-
-// --------------------------------------------------------------  COMPUTE 
-// -----------------------------------------------------------------------
-
-	void m_bang()
-	{
-		t_int i;	
-		for (i=0; i<nb_link; i++)	{
-			t_link *li = link[i];
-			t_mass *m1 = li->mass1,*m2 = li->mass2;
-		// compute link forces
-			t_float distance = sqrt(sqr(m1->posX-m2->posX) + sqr(m1->posY-m2->posY));		// L[n] = sqrt( (x1-x2)² +(y1-y2)²)
-			
-			t_float Fx,Fy;
-			if (distance < li->long_min || distance > li->long_max || distance == 0)	
-				Fx = Fy = 0;
-			else	{
-				t_float F  = (li->K1 * (distance - li->longueur) + li->D1 * (distance - li->distance_old))/distance;		// F[n] = k1 (L[n] - L[0])/L[n]+ D1 (L[n] - L[n-1])/L[n]
-				Fx = F * (m1->posX - m2->posX); // Fx = F * Lx[n]/L[n]
-				Fy = F * (m1->posY - m2->posY); // Fy = F * Ly[n]/L[n]
-			}
-			
-			m1->forceX -= Fx+li->D2*m1->speedX;	//  Fx1[n] = -Fx,Fx1[n] = Fx1[n] - D2 * vx1[n-1]
-			m1->forceY -= Fy+li->D2*m1->speedY;	// Fy1[n] = -Fy,Fy1[n] = Fy1[n] - D2 * vy1[n-1]
-			m2->forceX += Fx-li->D2*m2->speedX;	// Fx2[n] = Fx,Fx2[n] = Fx2[n] - D2 * vx2[n-1]
-			m2->forceY += Fy-li->D2*m2->speedY;	// Fy2[n] = Fy,Fy1[n] = Fy1[n] - D2 * vy1[n-1]
-			li->distance_old = distance;				// L[n-1] = L[n]
-		}
-
-		for (i=0; i<nb_mass; i++) {
-			t_mass *mi = mass[i];
-		// compute new masses position only if mobile = 1
-			if (mi->mobile == 1)  		{
-				t_float X_new = mi->forceX * mi->invM + 2*mi->posX - mi->posX2; // x[n] =Fx[n]/M+2x[n]-x[n-1] 
-				mi->posX2 = mi->posX;				// x[n-2] = x[n-1]
-				mi->posX = max(min(X_new,Xmax),Xmin);		// x[n-1] = x[n]
-				mi->speedX = mi->posX - mi->posX2;	// vx[n] = x[n] - x[n-1]
-				t_float Y_new = mi->forceY * mi->invM + 2*mi->posY - mi->posY2; // x[n] =Fx[n]/M+2x[n]-x[n-1]
-				mi->posY2 = mi->posY;				// x[n-2] = x[n-1]
-				mi->posY = max(min(Y_new,Ymax),Ymin);		// x[n-1] = x[n]
-				mi->speedY = mi->posY - mi->posY2;	// vx[n] = x[n] - x[n-1]
-				}
-		}
-
-		for (i=0; i<nb_mass; i++)	{
-			t_mass *mi = mass[i];
-		// clear forces
-			mi->out_forceX = mi->forceX;
-			mi->out_forceY = mi->forceY;
-			mi->forceX = mi->forceY = 0;						// Fx[n] = 0,Fy[n] = 0
-		}
-	}
-
-// --------------------------------------------------------------  MASSES
-// ----------------------------------------------------------------------
-
-	void m_mass(int argc,t_atom *argv) 
-	// add a mass
-	// Id, nbr, mobile, invM, speedX Y, posX Y, forceX Y
-	{
-		t_atom sortie[6], aux[2];
-		t_float M;
-
-		if (argc != 5)
-			error("mass : Id mobile mass X Y");
-
-		mass[nb_mass] = new t_mass;			// new mass
-		mass[nb_mass]->Id = GetSymbol(argv[0]);		// ID
-		mass[nb_mass]->mobile = GetInt(argv[1]);	// mobile
-		if (GetFloat(argv[2])==0)
-			M=1;
-		else M = GetFloat(argv[2]);			
-		mass[nb_mass]->invM = 1/(M);			// invM
-		mass[nb_mass]->speedX = 0;			// vx[n]
-		mass[nb_mass]->posX = GetFloat(argv[3]);	// x[n]
-		mass[nb_mass]->posX2 = GetFloat(argv[3]);	// x[n-1]
-		mass[nb_mass]->forceX = 0;			// Fx[n]
-		mass[nb_mass]->speedY = 0;			// vy[n]
-		mass[nb_mass]->posY = GetFloat(argv[4]);	// y[n]
-		mass[nb_mass]->posY2 = GetFloat(argv[4]);	// y[n-1]
-		mass[nb_mass]->forceY = 0;			// Fy[n]
-		mass[nb_mass]->nbr = id_mass;			// id number
-		nb_mass++ ;
-		id_mass++;
-		nb_mass = min ( nb_max_mass -1, nb_mass );
-		SetFloat((sortie[0]),id_mass-1);
-		SetSymbol((sortie[1]),GetSymbol(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,S_Mass,6,sortie);
-	}
-
-	void m_forceX(int argc,t_atom *argv) 
-	{
-	// add a force to mass(es) named Id or No
-		t_int i;
-		const t_symbol *sym = GetASymbol(argv[0]);
-		t_mass **mi;
-
-		if (argc != 2)
-			error("forceX : Idmass value");
-
-		if (sym ==0)	
-			for (i=0, mi=mass; i<nb_mass; mi++, i++)
-			{
-				if (GetInt(argv[0]) == (*mi)->nbr)	{
-					(*mi)->forceX = GetFloat(argv[1]);
-					break;
-				}
-			}
-		else
-			for (i=0, mi=mass; i<nb_mass; mi++, i++)
-			{
-				if (sym == (*mi)->Id)
-					(*mi)->forceX = GetFloat(argv[1]);
-			}
-	}
-
-	void m_forceY(int argc,t_atom *argv) 
-	{
-	// add a force to mass(es) named Id or No
-		t_int i;
-		const t_symbol *sym = GetASymbol(argv[0]);
-		t_mass **mi;
-
-		if (argc != 2)
-			error("forceX : Idmass value");
-
-		if (sym ==0)	
-			for (i=0, mi=mass; i<nb_mass; mi++, i++)
-			{
-				if (GetInt(argv[0]) == (*mi)->nbr)	{
-					(*mi)->forceY = GetFloat(argv[1]);
-					break;
-				}
-			}
-		else
-			for (i=0, mi=mass; i<nb_mass; mi++, i++)
-			{
-				if (sym == (*mi)->Id)
-					(*mi)->forceY = GetFloat(argv[1]);
-			}
-	}
-
-	void m_posX(int argc,t_atom *argv) 
-	{
-	// displace mass(es) named Id to a certain position
-		t_int i;
-		const t_symbol *sym = GetASymbol(argv[0]);
-		t_mass **mi;
-
-		if (argc != 2)
-			error("posX : Id/Nomass value");
-
-		if (GetFloat(argv[1]) < Xmax && GetFloat(argv[1]) > Xmin)
-			if (sym ==0)	
-				for (i=0, mi=mass; i<nb_mass; mi++, i++)
-				{
-					if (GetInt(argv[0]) == (*mi)->nbr)	{
-						(*mi)->posX = GetFloat(argv[1]);
-						(*mi)->posX2 = GetFloat(argv[1]);
-						break;
-					}
-				}
-			else
-				for (i=0, mi=mass; i<nb_mass; mi++, i++)
-					if (sym == (*mi)->Id)	{
-						(*mi)->posX = GetFloat(argv[1]);
-						(*mi)->posX2 = GetFloat(argv[1]);
-					}
-	}
-
-	void m_posY(int argc,t_atom *argv) 
-	{
-	// displace mass(es) named Id to a certain position
-		t_int i;
-		const t_symbol *sym = GetASymbol(argv[0]);
-		t_mass **mi;
-
-		if (argc != 2)
-			error("posY : Id/Nomass value");
-
-		if (GetFloat(argv[1]) < Ymax && GetFloat(argv[1]) > Ymin)
-			if (sym ==0)	
-				for (i=0, mi=mass; i<nb_mass; mi++, i++)
-				{
-					if (GetInt(argv[0]) == (*mi)->nbr)	{
-						(*mi)->posY = GetFloat(argv[1]);
-						(*mi)->posY2 = GetFloat(argv[1]);
-						break;
-					}
-				}
-			else
-				for (i=0, mi=mass; i<nb_mass; mi++, i++)
-					if (sym == (*mi)->Id)	{
-						(*mi)->posY = GetFloat(argv[1]);
-						(*mi)->posY2 = GetFloat(argv[1]);
-					}
-	}
-
-	void m_set_mobile(int argc,t_atom *argv) 
-	{
-	// set mass No to mobile
-		t_int i,aux;
-		t_mass **mi;
-	
-		if (argc != 1)
-			error("setMobile : Idmass");
-		
-		aux = GetInt(argv[0]);	
-		for (i=0, mi=mass; i<nb_mass; mi++, i++)
-			{
-				if ((*mi)->nbr == aux)
-					(*mi)->mobile = 1;
-			}
-	
-	}
-
-	void m_set_fixe(int argc,t_atom *argv) 
-	{
-	// set mass No to fixed
-		t_int i,aux;
-		t_mass **mi;
-		
-		if (argc != 1)
-			error("setFixed : Idmass");
-		
-		aux = GetAInt(argv[0]);	
-		for (i=0, mi=mass; i<nb_mass; mi++, i++)
-			{
-				if ((*mi)->nbr == aux)
-					(*mi)->mobile = 0;
-			}
-	
-	}
-
-	void m_delete_mass(int argc,t_atom *argv) 
-	{
-	// Delete mass
-		t_int i,nb_link_delete=0;
-		t_atom sortie[6];
-		NEWARR(t_atom,aux,nb_link);
-		t_mass **mi;
-		t_link **li;
-
-		if (argc != 1)
-			error("deleteMass : Nomass");
-	
-		// Delete associated links
-		for (i=0, li=link; i<nb_link; li++, i++)	{
-			if ((*li)->mass1->nbr == GetInt(argv[0]) || (*li)->mass2->nbr == GetInt(argv[0]))	{
-				SetFloat((aux[nb_link_delete]),(*li)->nbr);
-				nb_link_delete++;
-			}
-		}
-
-		for (i=0; i<nb_link_delete;i++)
-			m_delete_link(1,&aux[i]);
-
-		// delete mass
-		for (i=0, mi=mass; i<nb_mass; mi++, i++)
-			if ((*mi)->nbr == GetAInt(argv[0]))	{
-				SetFloat((sortie[0]),(*mi)->nbr);
-				SetSymbol((sortie[1]),(*mi)->Id);
-				SetFloat((sortie[2]),(*mi)->mobile);
-				SetFloat((sortie[3]),1/(*mi)->invM);
-				SetFloat((sortie[4]),(*mi)->posX);
-				SetFloat((sortie[5]),(*mi)->posY);
-				delete (*mi);
-				(*mi) = mass[nb_mass-1];
-				nb_mass--;
-				ToOutAnything(1,S_Mass_deleted,6,sortie);
-				break;
-			}
-		DELARR(aux);
-	}
-
-
-	void m_Xmax(int argc,t_atom *argv) 
-	{
-	// set X max
-		if (argc != 1)
-			error("Xmax : Value");
-		Xmax = GetFloat(argv[0]);
-	}
-
-	void m_Xmin(int argc,t_atom *argv) 
-	{
-	// set X min
-		if (argc != 1)
-			error("Xmin : Value");
-		Xmin = GetFloat(argv[0]);
-	}
-	void m_Ymax(int argc,t_atom *argv) 
-	{
-	// set Y max
-		if (argc != 1)
-			error("Ymax : Value");
-		Ymax = GetFloat(argv[0]);
-	}
-
-	void m_Ymin(int argc,t_atom *argv) 
-	{
-	// set Y min
-		if (argc != 1)
-			error("Ymin : Value");
-		Ymin = GetFloat(argv[0]);
-	}
-
-	void m_grab_mass(int argc,t_atom *argv) 
-	{
-	// grab nearest mass X Y
-		t_mass **mi;
-		t_float aux, distance;
- 		t_int i;
-
-		// if click
-		if (GetInt(argv[2])==1 && nb_mass>0)	{
-
-			if (argc != 3)
-				error("grabMass : X Y click");
-			// first time we grab this mass?Find nearest mass
-			if (mouse_grab == 0)	{
-				aux = pow(mass[0]->posX-GetFloat(argv[0]),2) + pow(mass[0]->posY-GetFloat(argv[1]),2);
-				nearest_mass = 0;	
-				for (i=1, mi=(mass+1); i<nb_mass; mi++, i++)	{
-					distance = pow((*mi)->posX-GetFloat(argv[0]),2) + pow((*mi)->posY-GetFloat(argv[1]),2);
-					if (distance<aux)	{
-						aux = distance;
-						nearest_mass = i;
-					}
-				}
-			}
-			
-			// Set fixed if mobile
-			i = mass[nearest_mass]->mobile;
-			mass[nearest_mass]->mobile = 0;
-
-			// Set XY
-			mass[nearest_mass]->posX = GetFloat(argv[0]);
-			mass[nearest_mass]->posX2 = GetFloat(argv[0]);
-			mass[nearest_mass]->posY = GetFloat(argv[1]);
-			mass[nearest_mass]->posY2 = GetFloat(argv[1]);
-
-			// Set mobile
-			mass[nearest_mass]->mobile = i;
-			
-			// Current grabbing on
-			mouse_grab = 1;
-		}
-		else
-			// Grabing off
-			mouse_grab =0;
-	}
-// --------------------------------------------------------------  LINKS 
-// ---------------------------------------------------------------------
-
-	void m_link(int argc,t_atom *argv) 
-	// add a link
-	// Id, *mass1, *mass2, K1, D1, D2, (Lmin,Lmax)
-	{
-		t_atom sortie[7], aux[2];
-		t_int i;
-        	t_mass *mass1 = NULL;
-        	t_mass *mass2 = NULL;
- 		t_mass **mi;
-       	
-        	if (argc < 6 || argc > 8)
-        	    error("link : Id Nomass1 Nomass2 K D1 D2 (Lmin Lmax)");
-			
-        	// check for existence of link masses:
-        	for (i=0, mi=mass; i<nb_mass; mi++, i++)
-				if ((*mi)->nbr==GetInt(argv[1]))	// pointer to mass1
-					// we found mass1
-        	        mass1 = (*mi);
-				else if ((*mi)->nbr==GetInt(argv[2]))	// pointer to mass2
-					// ... and mass2
-        	        mass2 = (*mi);
-
-        	if (mass1 and mass2)
-        	{
-			link[nb_link] = new t_link;			// New pointer
-			link[nb_link]->Id = GetSymbol(argv[0]);		// ID
-			link[nb_link]->mass1 = mass1; // pointer to mass1
-			link[nb_link]->mass2 = mass2; // pointer to mass2
-			link[nb_link]->K1 = GetFloat(argv[3]);		// K1
-			link[nb_link]->D1 = GetFloat(argv[4]);		// D1
-			link[nb_link]->D2 = GetFloat(argv[5]);		// D2
-			link[nb_link]->longx = link[nb_link]->mass1->posX - link[nb_link]->mass2->posX;	// Lx[0]
-			link[nb_link]->longy = link[nb_link]->mass1->posY - link[nb_link]->mass2->posY;	// Ly[0]
-			link[nb_link]->longueur = sqrt(pow(link[nb_link]->longx,2)+pow(link[nb_link]->longy,2)); // L[0]
-			link[nb_link]->nbr = id_link;			// id number
-			link[nb_link]->distance_old = link[nb_link]->longueur;	// L[n-1]
-			switch (argc)	{
-				case 6 :	
-					link[nb_link]->long_max = 32768;
-					link[nb_link]->long_min = 0;
-					break;
-				case 7 :	
-					link[nb_link]->long_min = GetFloat(argv[6]);
-					link[nb_link]->long_max = 32768;
-					break;
-				case 8 :	
-					link[nb_link]->long_min = GetFloat(argv[6]);
-					link[nb_link]->long_max = GetFloat(argv[7]);
-					break;	
-			}
-			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]),GetInt(argv[1]));
-			SetFloat((sortie[3]),GetInt(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,S_Link,7,sortie);
-        	}
-        	else
-            		error("link : Cannot create link: Not all masses for this link have been created yet.");
-	}
-
-	void m_ilink(int argc,t_atom *argv) 
-	// add interactor link
-	// Id, Id masses1, Id masses2, K1, D1, D2, (Lmin, Lmax)
-	{
-		t_atom aux[2], arglist[8];
-		t_int i,j, nbmass1=0, nbmass2=0;
-		NEWARR(t_int,imass1,nb_mass);
-		NEWARR(t_int,imass2,nb_mass);
-		t_symbol *Id1, *Id2;
-		t_mass **mi;
-
-		if (argc < 6 || argc > 8)
-			error("ilink : Id Idmass1 Idmass2 K D1 D2 (Lmin Lmax)");
-
-		Id1 = GetSymbol(argv[1]);
-		Id2 = GetSymbol(argv[2]);
-		ToOutAnything(1,S_iLink,0,aux);
-
-		for (i=0, mi=mass; i<nb_mass; mi++, i++)	{
-			if (Id1 == (*mi)->Id)	{
-				imass1[nbmass1]=i;
-				nbmass1++;
-			}
-			if (Id2 == (*mi)->Id)	{
-				imass2[nbmass2]=i;
-				nbmass2++;
-			}
-		}
-		
-		for(i=0;i<nbmass1;i++)
-			for(j=0;j<nbmass2;j++)	
-				if (imass1[i] != imass2[j])	{
-					SetSymbol((arglist[0]),GetSymbol(argv[0]));
-					SetFloat((arglist[1]),mass[imass1[i]]->nbr);
-					SetFloat((arglist[2]),mass[imass2[j]]->nbr);
-					SetFloat((arglist[3]),GetFloat(argv[3]));
-					SetFloat((arglist[4]),GetFloat(argv[4]));
-					SetFloat((arglist[5]),GetFloat(argv[5]));
-					switch (argc)	{
-						case 7 :	
-							SetFloat(arglist[6],GetFloat(argv[6]));
-							break;
-						case 8 :	
-							SetFloat(arglist[6],GetFloat(argv[6]));
-							SetFloat(arglist[7],GetFloat(argv[7]));
-							break;	
-					}
-					m_link(argc,arglist);
-				}
-		DELARR(imass1);
-		DELARR(imass2);
-	}
-
-	void m_setK(int argc,t_atom *argv) 
-	{
-	// set rigidity of link(s) named Id
-		t_int i;
-		const t_symbol *sym = GetSymbol(argv[0]);
-		t_link **li;
-
-		if (argc != 2)
-			error("setK : IdLink Value");
-
-		for (i=0, li=link; i<nb_link; li++, i++)
-		{
-			if (sym == (*li)->Id)
-				(*li)->K1 = GetFloat(argv[1]);
-		}
-	}
-
-	void m_setD(int argc,t_atom *argv) 
-	{
-	// set damping of link(s) named Id
-		t_int i;
-		const t_symbol *sym = GetSymbol(argv[0]);
-		t_link **li;
-
-		if (argc != 2)
-			error("setD : IdLink Value");
-
-		for (i=0, li=link; i<nb_link; li++, i++)
-		{
-			if (sym == (*li)->Id)
-				(*li)->D1 = GetFloat(argv[1]);
-		}
-	}
-
-	void m_setD2(int argc,t_atom *argv) 
-	{
-	// set damping of link(s) named Id
-		t_int i;
-		const t_symbol *sym = GetSymbol(argv[0]);
-		t_link **li;
-
-		if (argc != 2)
-			error("setD2 : IdLink Value");
-
-		for (i=0, li=link; i<nb_link; li++, i++)
-		{
-			if (sym == (*li)->Id)
-				(*li)->D2 = GetFloat(argv[1]);
-		}
-	}
-
-	void m_delete_link(int argc,t_atom *argv) 
-	{
-	// Delete link
-		t_int i;
-		t_atom sortie[7];
-		t_link **li;
-
-		if (argc != 1)
-			error("deleteLink : NoLink");
-
-		for (i=0, li=link; i<nb_link; li++, i++)
-			if ((*li)->nbr == GetInt(argv[0]))	{
-				SetFloat((sortie[0]),(*li)->nbr);
-				SetSymbol((sortie[1]),(*li)->Id);
-				SetFloat((sortie[2]),(*li)->mass1->nbr);
-				SetFloat((sortie[3]),(*li)->mass2->nbr);
-				SetFloat((sortie[4]),(*li)->K1);
-				SetFloat((sortie[5]),(*li)->D1);
-				SetFloat((sortie[6]),(*li)->D2);
-				delete (*li);
-				(*li)=link[nb_link-1];	// copy last link instead
-				nb_link--;
-				ToOutAnything(1,S_Link_deleted,7,sortie);
-				break;
-		}
-	}
-
-
-// --------------------------------------------------------------  GET 
-// -------------------------------------------------------------------
-	void m_get(int argc,t_atom *argv)
-	// get attributes
-	{
-		t_int i,j;
-		t_symbol *auxarg,*auxarg2, *auxtype;
-		t_atom sortie[5];
-		auxtype = GetSymbol(argv[0]);
-		auxarg = GetASymbol(argv[1]);		//auxarg : & symbol, 0 else
-		t_mass **mi;
-		t_link **li;
-
-		if (argc == 1)
-		{
-			if (auxtype == S_massesPos)		// get all masses positions
-				for (i=0, mi=mass; i<nb_mass; mi++, i++)
-				{
-					SetFloat(sortie[0],(*mi)->nbr);
-					SetFloat(sortie[1],(*mi)->posX);
-					SetFloat(sortie[2],(*mi)->posY);
-					ToOutAnything(0,S_massesPos,3,sortie);
-				}
-			else if (auxtype == S_massesForces)	// get all masses forces
-				for (i=0, mi=mass; i<nb_mass; mi++, i++)
-				{
-					SetFloat(sortie[0],(*mi)->nbr);
-					SetFloat(sortie[1],(*mi)->out_forceX);
-					SetFloat(sortie[2],(*mi)->out_forceY);
-					ToOutAnything(0,S_massesForces,3,sortie);
-				}
-			else if (auxtype == S_linksPos)		// get all links positions
-				for (i=0, li=link; i<nb_link; li++, i++)
-				{
-					SetFloat(sortie[0],(*li)->nbr);
-					SetFloat(sortie[1],(*li)->mass1->posX);
-					SetFloat(sortie[2],(*li)->mass1->posY);
-					SetFloat(sortie[3],(*li)->mass2->posX);
-					SetFloat(sortie[4],(*li)->mass2->posY);
-					ToOutAnything(0,S_linksPos,5,sortie);
-				}
-			else 					// get all masses speeds
-				for (i=0, mi=mass; i<nb_mass; mi++, i++)
-				{
-					SetFloat(sortie[0],(*mi)->nbr);
-					SetFloat(sortie[1],(*mi)->speedX);
-					SetFloat(sortie[2],(*mi)->speedY);
-					ToOutAnything(0,S_massesSpeeds,3,sortie);
-				}
-		}
-		else if (auxtype == S_massesPos) 		// get mass positions
-		{
-			if (auxarg == 0) // No
-			{
-				for (j = 1; j<argc; j++)
-					for (i=0, mi=mass; i<nb_mass; mi++, i++)
-						if ((*mi)->nbr==GetInt(argv[j]))
-						{
-							SetFloat(sortie[0],(*mi)->nbr);
-							SetFloat(sortie[1],(*mi)->posX);
-							SetFloat(sortie[2],(*mi)->posY);
-							ToOutAnything(0,S_massesPosNo,3,sortie);
-						}
-			}
-			else 		//symbol
-			{
-				for (j = 1; j<argc; j++)
-				{
-					auxarg2 = GetSymbol(argv[j]);
-					for (i=0, mi=mass; i<nb_mass; mi++, i++)	
-					{
-						if (auxarg2==(*mi)->Id)
-						{
-							SetSymbol(sortie[0],(*mi)->Id);
-							SetFloat(sortie[1],(*mi)->posX);
-							SetFloat(sortie[2],(*mi)->posY);
-							ToOutAnything(0,S_massesPosId,3,sortie);
-						}
-					}
-				}
-			}
-		}
-		else if (auxtype == S_massesForces)		// get mass forces
-		{
-			if (auxarg == 0) // No
-			{
-				for (j = 1; j<argc; j++)
-					for (i=0, mi=mass; i<nb_mass; mi++, i++)
-						if ((*mi)->nbr==GetInt(argv[j]))
-						{
-							SetFloat(sortie[0],(*mi)->nbr);
-							SetFloat(sortie[1],(*mi)->out_forceX);
-							SetFloat(sortie[2],(*mi)->out_forceY);
-							ToOutAnything(0,S_massesForcesNo,3,sortie);
-						}
-			}
-			else 		//symbol
-			{
-				for (j = 1; j<argc; j++)
-				{
-					auxarg2 = GetSymbol(argv[j]);
-					for (i=0, mi=mass; i<nb_mass; mi++, i++)	
-					{
-						if (auxarg2==(*mi)->Id)
-						{
-							SetSymbol(sortie[0],(*mi)->Id);
-							SetFloat(sortie[1],(*mi)->out_forceX);
-							SetFloat(sortie[2],(*mi)->out_forceY);
-							ToOutAnything(0,S_massesForcesId,3,sortie);
-						}
-					}
-				}
-			}
-		}
-		else if (auxtype == S_linksPos)			// get links positions
-		{
-			if (auxarg == 0) // No
-			{
-				for (j = 1; j<argc; j++)
-					for (i=0, li=link; i<nb_link; li++, i++)
-						if ((*li)->nbr==GetInt(argv[j]))
-						{
-							SetFloat(sortie[0],(*li)->nbr);
-							SetFloat(sortie[1],(*li)->mass1->posX);
-							SetFloat(sortie[2],(*li)->mass1->posY);
-							SetFloat(sortie[3],(*li)->mass2->posX);
-							SetFloat(sortie[4],(*li)->mass2->posY);
-							ToOutAnything(0,S_linksPosNo,5,sortie);
-						}
-			}
-			else 		//symbol
-			{
-				for (j = 1; j<argc; j++)
-				{
-					auxarg2 = GetSymbol(argv[j]);
-					for (i=0, li=link; i<nb_link; li++, i++)	
-					{
-						if (auxarg2==(*li)->Id)
-						{
-							SetSymbol(sortie[0],(*li)->Id);
-							SetFloat(sortie[1],(*li)->mass1->posX);
-							SetFloat(sortie[2],(*li)->mass1->posY);
-							SetFloat(sortie[3],(*li)->mass2->posX);
-							SetFloat(sortie[4],(*li)->mass2->posY);
-							ToOutAnything(0,S_linksPosId,5,sortie);
-						}
-					}
-				}
-			}
-		}
-		else 			 			// get mass speeds
-		{
-			if (auxarg == 0) // No
-			{
-				for (j = 1; j<argc; j++)
-					for (i=0, mi=mass; i<nb_mass; mi++, i++)
-						if ((*mi)->nbr==GetInt(argv[j]))
-						{
-							SetFloat(sortie[0],(*mi)->nbr);
-							SetFloat(sortie[1],(*mi)->speedX);
-							SetFloat(sortie[2],(*mi)->speedY);
-							ToOutAnything(0,S_massesSpeedsNo,3,sortie);
-						}
-			}
-			else 		//symbol
-			{
-				for (j = 1; j<argc; j++)
-				{
-					auxarg2 = GetSymbol(argv[j]);
-					for (i=0, mi=mass; i<nb_mass; mi++, i++)	
-					{
-						if (auxarg2==(*mi)->Id)
-						{
-							SetSymbol(sortie[0],(*mi)->Id);
-							SetFloat(sortie[1],(*mi)->speedX);
-							SetFloat(sortie[2],(*mi)->speedY);
-							ToOutAnything(0,S_massesSpeedsId,3,sortie);
-						}
-					}
-				}
-			}
-		}
-		
-
-	}
-
-	void m_mass_dumpl()
-	// List of masses positions on first outlet
-	{	
-		NEWARR(t_atom,sortie,2*nb_mass);
-		t_int i;
-		t_mass **mi;
-	
-		for (i=0, mi=mass; i<nb_mass; mi++, i++)	{
-			SetFloat((sortie[2*i]),(*mi)->posX);
-			SetFloat((sortie[2*i+1]),(*mi)->posY);
-		}
-		ToOutAnything(0, S_massesPosL, 2*nb_mass, sortie);
-		DELARR(sortie);
-	}
-
-	void m_force_dumpl()
-	// List of masses forces on first outlet
-	{	
-		NEWARR(t_atom,sortie,2*nb_mass);
-		t_int i;
-		t_mass **mi;
-	
-		for (i=0, mi=mass; i<nb_mass; mi++, i++)	{
-			SetFloat((sortie[2*i]),(*mi)->out_forceX);
-			SetFloat((sortie[2*i+1]),(*mi)->out_forceY);
-		}
-		ToOutAnything(0, S_massesForcesL, 2*nb_mass, sortie);
-		DELARR(sortie);
-	}
-
-	void m_info_dumpl()
-	// List of infos on masses and links on  first outlet
-	{	
-		t_atom sortie[7];
-		t_int i;
-		t_mass **mi;
-		t_link **li;
-
-		for (i=0, mi=mass; i<nb_mass; mi++, i++)	{
-			SetFloat((sortie[0]),(*mi)->nbr);
-			SetSymbol((sortie[1]),(*mi)->Id);
-			SetFloat((sortie[2]),(*mi)->mobile);
-			SetFloat((sortie[3]),1/(*mi)->invM);
-			SetFloat((sortie[4]),(*mi)->posX);
-			SetFloat((sortie[5]),(*mi)->posY);
-		ToOutAnything(1, S_Mass, 6, sortie);
-		}
-
-		for (i=0, li=link; i<nb_link; li++, i++)	{
-			SetFloat((sortie[0]),(*li)->nbr);
-			SetSymbol((sortie[1]),(*li)->Id);
-			SetFloat((sortie[2]),(*li)->mass1->nbr);
-			SetFloat((sortie[3]),(*li)->mass2->nbr);
-			SetFloat((sortie[4]),(*li)->K1);
-			SetFloat((sortie[5]),(*li)->D1);
-			SetFloat((sortie[6]),(*li)->D2);
-		ToOutAnything(1, S_Link, 7, sortie);
-		}
-
-	}
-
-// --------------------------------------------------------------  GLOBAL VARIABLES 
-// --------------------------------------------------------------------------------
-
-	t_link * link[nb_max_link];
-	t_mass * mass[nb_max_mass];
-	t_float Xmin, Xmax, Ymin, Ymax;
-	t_int nb_link, nb_mass, id_mass, id_link, mouse_grab, nearest_mass;
-
-// --------------------------------------------------------------  SETUP
-// ---------------------------------------------------------------------
-
-private:
-
-	// static symbols
-	const static t_symbol *S_Reset;
-	const static t_symbol *S_Mass;
-	const static t_symbol *S_Link;
-	const static t_symbol *S_iLink;
-	const static t_symbol *S_Mass_deleted;
-	const static t_symbol *S_Link_deleted;
-	const static t_symbol *S_massesPos;
-	const static t_symbol *S_massesPosNo;
-	const static t_symbol *S_massesPosId;
-	const static t_symbol *S_linksPos;
-	const static t_symbol *S_linksPosNo;
-	const static t_symbol *S_linksPosId;
-	const static t_symbol *S_massesForces;
-	const static t_symbol *S_massesForcesNo;
-	const static t_symbol *S_massesForcesId;
-	const static t_symbol *S_massesSpeeds;
-	const static t_symbol *S_massesSpeedsNo;
-	const static t_symbol *S_massesSpeedsId;
-	const static t_symbol *S_massesPosL;
-	const static t_symbol *S_massesForcesL;
-
-	static void setup(t_classid c)
-	{
-
-		// --- set up methods (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,"massesForcesL",m_force_dumpl);
-		FLEXT_CADDMETHOD_(c,0,"setMobile",m_set_mobile);
-		FLEXT_CADDMETHOD_(c,0,"setFixed",m_set_fixe);
-		FLEXT_CADDMETHOD_(c,0,"grabMass",m_grab_mass);
-	}
-
-	// 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_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)
-	FLEXT_CALLBACK_V(m_grab_mass)
-};
-
-	const t_symbol *msd2D::S_Reset = MakeSymbol("Reset");
-	const t_symbol *msd2D::S_Mass = MakeSymbol("Mass");
-	const t_symbol *msd2D::S_Link = MakeSymbol("Link");
-	const t_symbol *msd2D::S_iLink = MakeSymbol("iLink");
-	const t_symbol *msd2D::S_Mass_deleted = MakeSymbol("Mass deleted");
-	const t_symbol *msd2D::S_Link_deleted = MakeSymbol("Link deleted");
-	const t_symbol *msd2D::S_massesPos = MakeSymbol("massesPos");
-	const t_symbol *msd2D::S_massesPosNo = MakeSymbol("massesPosNo");
-	const t_symbol *msd2D::S_massesPosId = MakeSymbol("massesPosId");
-	const t_symbol *msd2D::S_linksPos = MakeSymbol("linksPos");
-	const t_symbol *msd2D::S_linksPosNo = MakeSymbol("linksPosNo");
-	const t_symbol *msd2D::S_linksPosId = MakeSymbol("linksPosId");
-	const t_symbol *msd2D::S_massesForces = MakeSymbol("massesForces");
-	const t_symbol *msd2D::S_massesForcesNo = MakeSymbol("massesForcesNo");
-	const t_symbol *msd2D::S_massesForcesId = MakeSymbol("massesForcesId");
-	const t_symbol *msd2D::S_massesSpeeds = MakeSymbol("massesSpeeds");
-	const t_symbol *msd2D::S_massesSpeedsNo = MakeSymbol("massesSpeedsNo");
-	const t_symbol *msd2D::S_massesSpeedsId = MakeSymbol("massesSpeedsId");
-	const t_symbol *msd2D::S_massesPosL = MakeSymbol("massesPosL");
-	const t_symbol *msd2D::S_massesForcesL = MakeSymbol("massesForcesL");
-
-// instantiate the class (constructor has a variable argument list)
-FLEXT_NEW_V("msd2D",msd2D)
-
-
+MSD("msd2D",msd2D,2)