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/*****************************************************************
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m2d_ini_front.c Type:Func
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Initialisation du front
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Date de creation : Wed Feb 5 17:23:50 1997
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Derniere version : Fri May 9 11:46:46 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 "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_ini_front(struct s_face *face)
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{
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struct s_segment *seg,*ac_seg,*segref;
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struct s_noeud *no1,*no2,*no_dep,*no,*no_fin;
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struct s_front *ft,*ftp,*ft_premier;
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struct s_frontiere *fr;
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struct s_loop *loop;
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struct s_coedge *coedge;
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int i,premier;
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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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if ((no1->indice==face->num)&&(no2->indice==face->num)) qu_ins_obj(SEGMENT,seg->num,mesh->root);
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}
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for (i=0;i<mesh->nb_frontiere;i++)
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{
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fr=ADRESSE(i,frontiere,mesh->);
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qu_ins_obj(FRONTIERE,fr->num,mesh->root);
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}
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/* constitution du front */
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for (loop=face->first_loop;loop!=NULL;loop=loop->next_loop)
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{
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coedge=loop->first_coedge;
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if (coedge->sense==FORWARD) no_dep=coedge->edge->start_vertex->noeud;
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else no_dep=coedge->edge->end_vertex->noeud;
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no=no_dep;
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ftp=NULL;
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premier=0;
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do
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{
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if (no==coedge->edge->start_vertex->noeud) no_fin=coedge->edge->end_vertex->noeud;
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else no_fin=coedge->edge->start_vertex->noeud;
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ac_seg=NULL;
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do
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{
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if (((coedge->sense==REVERSED)^((no_dep->num==no_fin->num) && (coedge->edge->sense==REVERSED)))==1)
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for (i=0;i<no->nb_segment;i++)
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{
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seg=no->segment[i];
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if (((seg->n1==no->num)||(seg->n2==no->num))&&(seg!=ac_seg)&&(seg->num_ent==coedge->edge->num)) segref=seg;
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}
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else
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for (i=no->nb_segment-1;i>(-1);i--)
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{
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seg=no->segment[i];
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if (((seg->n1==no->num)||(seg->n2==no->num))&&(seg!=ac_seg)&&(seg->num_ent==coedge->edge->num)) segref=seg;
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}
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ac_seg=segref;
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m2d_ac_front(&ft,2);
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if (premier==0)
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{
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ft_premier=ft;
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premier=1;
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}
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ft->n1=no->num;
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if (ac_seg->n1==no->num) ft->n2=ac_seg->n2; else ft->n2=ac_seg->n1;
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ft->seg=ac_seg;
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ft->seg->front=1;
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ft->prec=ftp;
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if (ftp!=NULL) ftp->suiv=ft;
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m2d_ord_front(ft);
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ftp=ft;
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no=ADRESSE(ft->n2,noeud,mesh->);
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}
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while (no!=no_fin);
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coedge=coedge->next_coedge;
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}
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while (coedge!=loop->first_coedge);
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ft_premier->prec=ft;
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ft->suiv=ft_premier;
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}
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}
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