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/*****************************************************************
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m2d_gest_front.c Type:Func
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Gestion du front
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Date de creation : Wed Feb 5 17:24:21 1997
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Derniere version : Wed May 7 15:32:19 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 <stdlib.h>
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#include <math.h>
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#include "const.h"
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#include "memoire.h"
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#include "struct.h"
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#include "prototype.h"
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/**************************/
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/* variables globales */
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extern struct environnment env;
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extern struct s_mesh *mesh;
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/**************************/
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/* programme principal */
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void m2d_gest_front(struct s_face *face)
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{
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struct s_front *ft,*ftp,*fts,*ft2,*ftn;
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struct s_noeud *nop,*no1,*no2,*nos;
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struct s_segment *seg,*seg2,*segref;
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int pass;
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int traite,mode;
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int np,n1,n2,ns,sol,solu;
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int anglep,angles;
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int ierr,ierr2,compteur;
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float eps,crit11,crit12,crit21,crit22,crit1,crit2;
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float pcp,pss,pcs,psp;
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float nplan[4],n1n2[4],n[4],n2s[4],pn1[4];
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compteur=0;
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while (mesh->tete_front!=NULL)
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{
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voir();
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compteur++;
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ft=mesh->tete_front;
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ftp=ft->prec;
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fts=ft->suiv;
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eps=0.0001*ft->seg->longueur;
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np=ftp->n1;
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n1=ft->n1;
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n2=ft->n2;
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ns=fts->n2;
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nop=ADRESSE(np,noeud,mesh->);
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no1=ADRESSE(n1,noeud,mesh->);
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no2=ADRESSE(n2,noeud,mesh->);
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nos=ADRESSE(ns,noeud,mesh->);
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/* angle precedent et angle suivant */
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VEC(n1n2,no1,no2);
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VEC(n2s,no2,nos);
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VEC(pn1,nop,no1);
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NORME(n1n2);
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NORME(n2s);
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NORME(pn1);
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eval_normal(face,nplan,no1->u,no1->v);
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NORME(nplan);
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PVEC(n,nplan,n1n2);
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pcp=(-1)*PSCA(n1n2,pn1);
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psp=(-1)*PSCA(n,pn1);
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if ((pcp>=0.1786481777)&&(psp>eps)) anglep=1; else anglep=0;
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eval_normal(face,nplan,no2->u,no2->v);
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NORME(nplan);
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PVEC(n,nplan,n1n2);
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pcs=(-1.)*PSCA(n1n2,n2s);
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pss=PSCA(n,n2s);
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if ((pcs>=0.1786481777)&&(pss>eps)) angles=1; else angles=0;
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traite=0;
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pass=0;
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while (traite<1)
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{
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if ( (ftp==fts->suiv) && (n1!=ns) && (n2!=np) ) /* front de 3 */
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{
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m2d_ac_front(&ftp,1);
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m2d_ac_front(&ft,1);
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m2d_ac_front(&fts,1);
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m2d_i_triangle(face,n1,ns,n2,0);
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traite=1;
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}
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if ( (ftp->prec==fts->suiv) && (traite==0) ) /* front de 4 */
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{
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if (m2d_int_triangle(np,n1,n2,ns)==1)
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{
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m2d_i_segment(face,&seg,n1,ns,FRONT);
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m2d_i_triangle(face,n1,ns,n2,0);
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m2d_i_triangle(face,np,ns,n1,0);
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}
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else if (m2d_int_triangle(np,n1,ns,n2)==1)
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{
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m2d_i_segment(face,&seg,n2,np,FRONT);
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m2d_i_triangle(face,n1,np,n2,0);
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m2d_i_triangle(face,np,ns,n2,0);
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}
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else if (m2d_int_triangle(np,n2,ns,n1)==1)
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{
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m2d_i_segment(face,&seg,n1,ns,FRONT);
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m2d_i_triangle(face,n1,ns,n2,0);
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m2d_i_triangle(face,np,ns,n1,0);
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}
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else if (m2d_int_triangle(n1,n2,ns,np)==1)
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{
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m2d_i_segment(face,&seg,n2,np,FRONT);
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m2d_i_triangle(face,n1,np,n2,0);
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m2d_i_triangle(face,np,ns,n2,0);
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}
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else
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{
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crit11=m2d_cal_qual(n1,n2,np);
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crit12=m2d_cal_qual(np,n2,ns);
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crit21=m2d_cal_qual(n1,n2,ns);
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crit22=m2d_cal_qual(np,n1,ns);
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MINI(crit1,crit11,crit12);
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MINI(crit2,crit21,crit22);
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if (crit1>crit2)
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{
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m2d_i_segment(face,&seg,np,n2,FRONT);
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m2d_i_triangle(face,n1,np,n2,0);
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m2d_i_triangle(face,np,ns,n2,0);
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}
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else
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{
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m2d_i_segment(face,&seg,n1,ns,FRONT);
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m2d_i_triangle(face,n1,ns,n2,0);
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m2d_i_triangle(face,np,ns,n1,0);
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}
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}
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m2d_ac_front(&ft,1);
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m2d_ac_front(&fts->suiv,1);
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m2d_ac_front(&fts,1);
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m2d_ac_front(&ftp,1);
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traite=1;
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}
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if ( (anglep==1) && (angles==1) && (traite==0) ) /* referme une cavite */
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{
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crit11=m2d_cal_qual(n1,n2,np);
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crit12=m2d_cal_qual(np,n2,ns);
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crit21=m2d_cal_qual(n1,n2,ns);
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crit22=m2d_cal_qual(np,n1,ns);
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MINI(crit1,crit11,crit12);
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MINI(crit2,crit21,crit22);
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ierr=m2d_i_segment(face,&seg,np,ns,TOUS);
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if (ierr==1)
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{
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if (crit1>crit2)
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{
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ierr=m2d_i_segment(face,&segref,np,n2,FRONT);
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solu=1;
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}
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else
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{
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ierr=m2d_i_segment(face,&segref,n1,ns,FRONT);
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solu=2;
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}
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if (ierr==0)
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if (crit1>crit2)
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{
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ierr=m2d_i_segment(face,&segref,n1,ns,FRONT);
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solu=2;
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}
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else
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{
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ierr=m2d_i_segment(face,&segref,np,n2,FRONT);
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solu=1;
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}
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if (ierr==0)
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{
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m2d_d_segment(&seg);
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traite=(-1);
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}
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else
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{
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m2d_ac_front(&ft,1);
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m2d_ac_front(&ft,2);
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ft->n1=np;
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ft->n2=ns;
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ft->seg=seg;
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ft->seg->front=ft->seg->front+1;
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ft->prec=ftp->prec;
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ft->suiv=fts->suiv;
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ftp->prec->suiv=ft;
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fts->suiv->prec=ft;
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m2d_ac_front(&ftp,1);
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m2d_ac_front(&fts,1);
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m2d_ord_front(ft);
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if (solu==1)
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{
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m2d_i_triangle(face,n1,np,n2,0);
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m2d_i_triangle(face,np,ns,n2,0);
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}
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else
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{
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m2d_i_triangle(face,n1,ns,n2,0);
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m2d_i_triangle(face,np,ns,n1,0);
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}
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traite=1;
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}
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}
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else traite=(-1);
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}
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if ( (anglep==1) && (traite==0) ) /* referme precedent */
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{
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ierr=m2d_i_segment(face,&seg,np,n2,TOUS);
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if (ierr==1)
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{
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m2d_ac_front(&ft,1);
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m2d_ac_front(&ft,2);
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ft->n1=np;
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ft->n2=n2;
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ft->seg=seg;
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ft->seg->front=ft->seg->front+1;
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ft->prec=ftp->prec;
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ft->suiv=fts;
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ftp->prec->suiv=ft;
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fts->prec=ft;
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m2d_ac_front(&ftp,1);
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m2d_ord_front(ft);
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m2d_i_triangle(face,n1,np,n2,0);
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traite=1;
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}
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else traite=(-1);
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}
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if ( (angles==1) && (traite==0) ) /* referme suivant */
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{
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ierr=m2d_i_segment(face,&seg,n1,ns,TOUS);
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if (ierr==1)
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{
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m2d_ac_front(&ft,1);
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m2d_ac_front(&ft,2);
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ft->n1=n1;
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ft->n2=ns;
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ft->seg=seg;
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ft->seg->front++;
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ft->suiv=fts->suiv;
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ft->prec=ftp;
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ftp->suiv=ft;
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fts->suiv->prec=ft;
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m2d_ac_front(&fts,1);
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m2d_ord_front(ft);
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m2d_i_triangle(face,n1,ns,n2,0);
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traite=1;
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}
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else traite=(-1);
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}
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if ( (traite<1) && (pass==0) ) /* cas general */
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{
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mode=m2d_gen_noe(face,ft,&ft2,&sol);
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if (mode==2)
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{
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if (sol==ns)
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{
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mode=0;
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anglep=0;
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angles=1;
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pass=1;
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traite=0;
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}
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if (sol==np)
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{
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mode=0;
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anglep=1;
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angles=0;
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traite=0;
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pass=1;
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}
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}
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if (mode==1)
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{
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ierr=m2d_i_segment(face,&seg,n1,sol,FRONT);
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ierr2=m2d_i_segment(face,&seg2,sol,n2,FRONT);
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if ( (ierr==0) && (ierr2==0) )
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{
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mesh->nb_noeud--;
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traite=(-1);
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}
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else if ( (ierr==0) && (ierr2!=0) )
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{
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traite=(-1);
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m2d_d_segment(&seg2);
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mesh->nb_noeud--;
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}
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else if ( (ierr!=0) && (ierr2==0) )
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{
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traite=(-1);
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m2d_d_segment(&seg);
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mesh->nb_noeud--;
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}
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else
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{
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m2d_ac_front(&ft,1);
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m2d_ac_front(&ft,2);
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m2d_ac_front(&ftn,2);
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ft->n1=n1;
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ft->n2=sol;
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ft->seg=seg;
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ft->seg->front++;
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ftn->n1=sol;
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ftn->n2=n2;
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ftn->seg=seg2;
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ftn->seg->front++;
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ftp->suiv=ft;
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ft->prec=ftp;
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ft->suiv=ftn;
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ftn->prec=ft;
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ftn->suiv=fts;
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fts->prec=ftn;
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m2d_ord_front(ft);
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m2d_ord_front(ftn);
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m2d_i_triangle(face,n1,sol,n2,1);
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qu_ins_obj(NOEUD,sol,mesh->root);
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traite=1;
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}
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}
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if (mode==2)
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{
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ierr=m2d_i_segment(face,&seg,n1,sol,FRONT);
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ierr2=m2d_i_segment(face,&seg2,sol,n2,FRONT);
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if ( (ierr==0) && (ierr2==0) ) traite=(-1);
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else if ( (ierr==0) && (ierr2!=0) )
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{
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traite=(-1);
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m2d_d_segment(&seg2);
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}
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else if ( (ierr!=0) && (ierr2==0) )
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{
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traite=(-1);
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m2d_d_segment(&seg);
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}
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else
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{
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m2d_ac_front(&ft,1);
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m2d_ac_front(&ft,2);
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m2d_ac_front(&ftn,2);
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ft->n1=n1;
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ft->n2=sol;
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ft->seg=seg;
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ft->seg->front++;
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ftn->n1=sol;
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ftn->n2=n2;
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ftn->seg=seg2;
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ftn->seg->front++;
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ftp->suiv=ft;
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ft->prec=ftp;
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ft->suiv=ft2;
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| 371 |
ftn->prec=ft2->prec;
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| 372 |
ftn->suiv=fts;
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fts->prec=ftn;
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| 374 |
ft2->prec->suiv=ftn;
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| 375 |
ft2->prec=ft;
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m2d_ord_front(ft);
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m2d_ord_front(ftn);
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m2d_i_triangle(face,n1,sol,n2,2);
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| 379 |
traite=1;
|
| 380 |
}
|
| 381 |
}
|
| 382 |
}
|
| 383 |
if ( traite==(-1))
|
| 384 |
{
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| 385 |
(ft->etat)++;
|
| 386 |
anglep=0;
|
| 387 |
angles=0;
|
| 388 |
mesh->tete_front=mesh->tete_front->suivant;
|
| 389 |
mesh->tete_front->precedent=NULL;
|
| 390 |
for (ft2=mesh->tete_front;ft2->suivant!=NULL;ft2=ft2->suivant);
|
| 391 |
ft2->suivant=ft;
|
| 392 |
ft->precedent=ft2;
|
| 393 |
ft->suivant=NULL;
|
| 394 |
traite=1;
|
| 395 |
}
|
| 396 |
}
|
| 397 |
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| 398 |
}
|
| 399 |
|
| 400 |
}
|
