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/*****************************************************************
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m1d_lissage.c Type:Func
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Lissage du maillage lineique
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Date de creation : Thu Dec 5 10:23:03 1996
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Derniere version : Fri May 9 16:05:11 1997
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Vincent FRANCOIS
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*****************************************************************/
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/**************************/
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/* include */
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#include <stdio.h>
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#include <string.h>
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#include <math.h>
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#include <stdlib.h>
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#include "const.h"
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#include "struct.h"
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#include "memoire.h"
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#include "prototype.h"
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/**************************/
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/* variables globales */
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extern struct s_param *para;
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extern struct environnement env;
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extern struct s_acis *acis;
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extern struct s_mesh *mesh;
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#define FDN2(s) (dnm*(s-s1)*(s-s2)/((sm-s1)*(sm-s2))+dn1*(s-sm)*(s-s2)/((s1-sm)*(s1-s2))+dn2*(s-s1)*(s-sm)/((s2-s1)*(s2-sm)))
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/**************************/
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/* programme principal */
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void m1d_lissage(int segment1,int segment2)
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{
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struct s_edge *edge;
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struct s_segment *seg,*sega;
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struct s_face *face;
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struct s_noeud *no,*no1,*no2,*no1a,*no2a;
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int i,j,num,degre,nfin;
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float t,a,dens,l,vec[4],coord[4],vec1[4],vec2[4];
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float ti,tii,aprec,tprec,limit,dn1,dn2,dnm,sm,s1,s2,s,dis,t1,t2;
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int n1,n2,n,noe,numo,raffine;
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float *densite;
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int *iordre;
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/* moyenne des longueurs */
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/*moy=0.;
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nb=0;
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for (i=0;i<mesh->nb_noeud;i++)
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{
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no=ADRESSE(i,noeud,mesh->);
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for (j=0;j<no->nb_segment;j++)
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{
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valeur=no->segment[j]->longueur;
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if (valeur>env.dens) valeur=env.dens;
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moy=moy+valeur;
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nb++;
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}
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}
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moy=moy/nb; */
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/* ecart type */
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/*ec=0.;
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nb=0;
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for (i=0;i<mesh->nb_noeud;i++)
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{
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no=ADRESSE(i,noeud,mesh->);
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for (j=0;j<no->nb_segment;j++)
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{
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valeur=no->segment[j]->longueur;
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if (valeur>env.dens) valeur=env.dens;
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ec=ec+(valeur-moy)*(valeur-moy);
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nb++;
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}
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}
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ec=(float)sqrt((double)(ec/(nb-1)));*/
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/* calcul de densite */
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densite=(float *)calloc(mesh->nb_noeud+1,sizeof(float));
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ERREUR_ALLOC(densite);
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iordre=(int *)calloc(mesh->nb_noeud+1,sizeof(int));
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ERREUR_ALLOC(iordre);
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for (i=0;i<mesh->nb_noeud;i++)
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{
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no=ADRESSE(i,noeud,mesh->);
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dens=env.dens;
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no->dens=dens;
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for (j=0;j<no->nb_segment;j++)
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// if (no->segment[j]->longueur>moy-ec)
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MINI(no->dens,no->dens,no->segment[j]->longueur)
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}
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for (i=segment1;i<segment2;i++)
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{
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voir();
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seg=ADRESSE(i,segment,mesh->);
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edge=(struct s_edge *)acis->entity[seg->num_ent];
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no1=ADRESSE(seg->n1,noeud,mesh->);
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no2=ADRESSE(seg->n2,noeud,mesh->);
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dn1=no1->dens;
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dn2=no2->dens;
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dis=seg->longueur;
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s1=0.;
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s2=dis;
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if (no1->type==EDGE) t1=no1->pos; else t1=edge->t1;
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if (no2->type==EDGE) t2=no2->pos-t1; else t2=edge->t1+edge->t2-t1;
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if (edge->nb_segment!=0)
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{
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sega=edge->segment[0];
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no1a=ADRESSE(sega->n1,noeud,mesh->);
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no2a=ADRESSE(sega->n2,noeud,mesh->);
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VEC(vec1,no1a,no2a);
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t=geo_ind_point_edge(edge,no1a);
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eval_edge(edge,t,DERIVE,vec2);
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if (PSCA(vec1,vec2)<0.)
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{
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if (no2->type==EDGE) t1=no2->pos; else t1=edge->t1;
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if (no1->type==EDGE) t2=no1->pos-t1; else t2=edge->t1+edge->t2-t1;
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}
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}
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raffine=0;
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face=edge->owning_coedge->owning_loop->owning_face;
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if (strcmp(acis->type_entite[face->surface],"plane-surface")!=0) raffine=1;
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if (edge->owning_coedge->partner_coedge!=NULL)
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{
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face=edge->owning_coedge->partner_coedge->owning_loop->owning_face;
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if (strcmp(acis->type_entite[face->surface],"plane-surface")!=0) raffine=1;
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}
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if (raffine==1)
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{
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dn1=edge->start_vertex->noeud->dens;
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dn2=edge->end_vertex->noeud->dens;
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}
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if ( (dis<1.5*env.dens) || (raffine==1) )
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if (dn1==dn2) degre=0;
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else degre=1;
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else
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if ((dn1==dn2) && (dn1==env.dens)) degre=0;
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else if ( (dn1!=env.dens) && (dn2==env.dens)) degre=1;
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else if ( (dn1==env.dens) && (dn2!=env.dens)) degre=1;
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else degre=2;
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if (degre==2)
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{
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dnm=env.dens;
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sm=(dn1*s1+dn2*s2)/(dn1+dn2);
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}
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else
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{
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dnm=0.5*(dn1+dn2);
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sm=dis/2;
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}
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MINI(l,dn1,dn2);
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num=(int)floor((double)10*dis/l)+1;
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a=0.;
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for (j=0;j<num;j++)
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{
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ti=(t1+t2*j/num);
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tii=(t1+t2*(j+1)/num);
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t=(0.7886751345*ti+0.2113248654*tii);
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eval_edge(edge,t,DERIVE,coord);
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s=(t-t1)/t2*dis;
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a=a+(float)sqrt(coord[0]*coord[0]+coord[1]*coord[1]+coord[2]*coord[2])/FDN2(s);
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t=(0.7886751345*tii+0.2113248654*ti);
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eval_edge(edge,t,DERIVE,coord);
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s=(t-t1)/t2*dis;
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a=a+(float)sqrt(coord[0]*coord[0]+coord[1]*coord[1]+coord[2]*coord[2])/FDN2(s);
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}
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a=(float)fabs((double)(a*t2/num/2));
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n=(int)floor((double)a);
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if (a-floor((double)a)>0.5) n++;
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if (n<1) n=1;
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limit=a/(float)n;
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n1=seg->n1;
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nfin=seg->n2;
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j=0;
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a=0.;
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if (n!=1)
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{
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for (noe=0;noe<n;noe++)
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{
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if (noe!=n-1)
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{
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while (a<limit)
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{
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aprec=a;
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tprec=tii;
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ti=(t1+t2*j/num);
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tii=(t1+t2*(j+1)/num);
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t=(0.7886751345*ti+0.2113248654*tii);
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eval_edge(edge,t,DERIVE,coord);
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s=(t-t1)/t2*dis;
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a=a+(float)fabs((double)t2)/num/2*(float)sqrt(coord[0]*coord[0]+coord[1]*coord[1]+coord[2]*coord[2])/FDN2(s);
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t=(0.7886751345*tii+0.2113248654*ti);
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eval_edge(edge,t,DERIVE,coord);
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s=(t-t1)/t2*dis;
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a=a+(float)fabs((double)t2)/num/2*(float)sqrt(coord[0]*coord[0]+coord[1]*coord[1]+coord[2]*coord[2])/FDN2(s);
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j++;
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}
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t=tprec+(tii-tprec)*(limit-aprec)/(a-aprec);
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NEW_ENTITE(no,noeud,mesh->);
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no->num=mesh->nb_noeud-1;
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eval_edge(edge,t,FONCTION,coord);
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no->x=coord[0];
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no->y=coord[1];
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no->z=coord[2];
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no->dens=env.dens;
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no->type=EDGE;
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no->num_ent=edge->num;
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no->pos=t;
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n2=no->num;
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}
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else n2=nfin;
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if (noe==0) seg=ADRESSE(i,segment,mesh->);
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else
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{
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NEW_ENTITE(seg,segment,mesh->);
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seg->num=mesh->nb_segment-1;
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NEW_POINTEUR(numo,segment,edge->);
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edge->segment[numo]=seg;
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}
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seg->n1=n1;
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seg->n2=n2;
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seg->type=EDGE;
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seg->num_ent=edge->num;
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n1=n2;
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a=a-limit;
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}
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}
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}
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/* mise a jour des liens noeud segment et de la densite aux noeuds */
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for (i=0;i<mesh->nb_noeud;i++)
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{
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no=ADRESSE(i,noeud,mesh->);
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if (no->nb_segment!=0)
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{
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free(no->segment);
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no->segment=NULL;
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no->nb_segment=0;
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}
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}
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for (i=0;i<mesh->nb_segment;i++)
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{
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seg=ADRESSE(i,segment,mesh->);
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no1=ADRESSE(seg->n1,noeud,mesh->);
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no2=ADRESSE(seg->n2,noeud,mesh->);
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VEC(vec,no1,no2);
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seg->longueur=(float)sqrt((double)PSCA(vec,vec));
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NEW_POINTEUR(num,segment,no1->);
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no1->segment[num]=seg;
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NEW_POINTEUR(num,segment,no2->);
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no2->segment[num]=seg;
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}
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for (i=0;i<mesh->nb_noeud;i++)
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{
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no=ADRESSE(i,noeud,mesh->);
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dens=env.dens;
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no->dens=dens;
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for (j=0;j<no->nb_segment;j++)
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MINI(no->dens,no->dens,no->segment[j]->longueur)
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}
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}
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