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/*****************************************************************
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m3d_ini_front.cpp Type:Func
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Initialisation d'un front 3D
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Date de creation : 10-3-1998 15 :34 :13
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Derniere version : 10-3-1998 15 :34 :13
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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 "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 s_acis *acis;
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extern struct environnement env;
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extern struct s_mesh *mesh;
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extern struct s_param *para;
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/**************************/
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/* programme principal */
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void m3d_ini_front(void)
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{
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struct s_frontiere3d *fr;
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struct s_front3d *ft;
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struct s_noeud *no1,*no2,*no3;
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int i,j,k;
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float angle;
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for (i=0;i<mesh->nb_frontiere3d;i++)
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{
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fr=ADRESSE(i,frontiere3d,mesh->);
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m3d_ac_front(&ft,NEW);
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ft->n1=fr->no1->num;
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ft->n2=fr->no2->num;
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ft->n3=fr->no3->num;
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ft->tri=fr->tri;
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ft->tri->front=ft->tri->front+1;
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ft->tri->ft=ft;
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m3d_ord_front(ft,NONFORCE);
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oc_ins_obj(FRONT3D,ft->num,mesh->first);
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}
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for (i=0;i<mesh->nb_front3d;i++ )
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{
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ft=ADRESSE(i,front3d,mesh->);
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no1=ADRESSE(ft->n1,noeud,mesh->);
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no2=ADRESSE(ft->n2,noeud,mesh->);
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no3=ADRESSE(ft->n3,noeud,mesh->);
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for (j=0;j<no1->nb_triangle;j++)
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for (k=0;k<no2->nb_triangle;k++)
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if ((no1->triangle[j]==no2->triangle[k])&&(no1->triangle[j]!=ft->tri))
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if (ft->voisin[0].ft==NULL)
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{
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ft->voisin[0].ft=no1->triangle[j]->ft;
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ft->voisin[0].angle=m3d_angle_front(ft,ft->voisin[0].ft);
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}
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else
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{
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angle=m3d_angle_front(ft,no1->triangle[j]->ft);
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if (angle<ft->voisin[0].angle)
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{
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ft->voisin[0].ft=no1->triangle[j]->ft;
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ft->voisin[0].angle=angle;
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}
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}
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for (j=0;j<no1->nb_triangle;j++)
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for (k=0;k<no3->nb_triangle;k++)
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if ((no1->triangle[j]==no3->triangle[k])&&(no1->triangle[j]!=ft->tri))
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if (ft->voisin[1].ft==NULL)
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{
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ft->voisin[1].ft=no1->triangle[j]->ft;
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ft->voisin[1].angle=m3d_angle_front(ft,ft->voisin[1].ft);
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}
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else
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{
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angle=m3d_angle_front(ft,no1->triangle[j]->ft);
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if (angle<ft->voisin[1].angle)
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{
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ft->voisin[1].ft=no1->triangle[j]->ft;
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ft->voisin[1].angle=angle;
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}
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}
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for (j=0;j<no2->nb_triangle;j++)
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for (k=0;k<no3->nb_triangle;k++)
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if ((no2->triangle[j]==no3->triangle[k])&&(no2->triangle[j]!=ft->tri))
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if (ft->voisin[2].ft==NULL)
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{
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ft->voisin[2].ft=no2->triangle[j]->ft;
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ft->voisin[2].angle=m3d_angle_front(ft,ft->voisin[2].ft);
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}
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else
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{
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angle=m3d_angle_front(ft,no2->triangle[j]->ft);
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if (angle<ft->voisin[2].angle)
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{
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ft->voisin[2].ft=no2->triangle[j]->ft;
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ft->voisin[2].angle=angle;
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}
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}
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}
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}
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