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/*****************************************************************
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r3d_ins_triangle.cpp Type:Func
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Insertion des triangles recuperes et initialisation du front
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Date de creation : 14-8-1997 11 :55 :6
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Derniere version : 14-8-1997 11 :55 :6
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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 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_maillage *maillage;
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extern struct s_param *para;
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/**************************/
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/* programme principal */
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void r3d_ins_triangle(struct s_face *face,int nb_facette,int *tab_facette,struct s_octree **liste_oct)
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{
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int i,j,*test,nb_liste=0,nb_chaine;
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int nb_segment,num;
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char mess[255];
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float du,dv,w[4],n2n1[4],n2n3[4],nor[4],cosa,sina,alpha,alpharef;
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float u1,v1,u2,v2,u3,v3;
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struct s_mfacette *mfacette;
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struct s_front *ft,*ftd,*ftp,*ft_courant,*ftref;
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struct s_segment *seg;
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struct s_triangle *tri;
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struct s_mtriangle *mtri;
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struct s_quadtree *liste[2];
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struct s_noeud *no,*no1f,*no2f,*no3f;
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struct s_mnoeud *mno1,*mno2,*mno3;
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if (nb_facette==0)
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{
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aff_text(R3D_INS_TRI_NEW);
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return; /* nouvelle face */
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}
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else
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{
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sprintf(mess,R3D_INS_TRI_OLD,nb_facette);
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aff_text(mess);
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}
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nb_segment=mesh->nb_segment;
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for (j=0;j<nb_facette;j++)
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{
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mfacette=ADRESSE(tab_facette[j],mfacette,maillage->);
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if (mfacette->nb_mtriangle>1)
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for (i=0;i<mfacette->nb_mtriangle;i++)
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{
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mtri=mfacette->mtriangle[i];
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mno1=ADRESSE(mtri->n1,mnoeud,maillage->);
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mno2=ADRESSE(mtri->n2,mnoeud,maillage->);
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mno3=ADRESSE(mtri->n3,mnoeud,maillage->);
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NEW_ENTITE(tri,triangle,mesh->);
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tri->num=mesh->nb_triangle-1;
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tri->n1=r3d_gene_noeud(mno1,liste_oct,nb_liste);
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tri->n2=r3d_gene_noeud(mno2,liste_oct,nb_liste);
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tri->n3=r3d_gene_noeud(mno3,liste_oct,nb_liste);
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no=ADRESSE(tri->n1,noeud,mesh->);
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if (no->indice!=face->num)
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{
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eval_face(face,&no->u,&no->v,INVERSE,&no->x,&no->y,&no->z,0.,0.);
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no->dens=eval_fdn2b(face,no->u,no->v,TOTAL);
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no->indice=face->num;
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}
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no=ADRESSE(tri->n2,noeud,mesh->);
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if (no->indice!=face->num)
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{
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eval_face(face,&no->u,&no->v,INVERSE,&no->x,&no->y,&no->z,0.,0.);
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no->dens=eval_fdn2b(face,no->u,no->v,TOTAL);
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no->indice=face->num;
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}
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no=ADRESSE(tri->n3,noeud,mesh->);
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if (no->indice!=face->num)
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{
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eval_face(face,&no->u,&no->v,INVERSE,&no->x,&no->y,&no->z,0.,0.);
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no->dens=eval_fdn2b(face,no->u,no->v,TOTAL);
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no->indice=face->num;
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}
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tri->creation=RECUPERER;
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no=ADRESSE(tri->n1,noeud,mesh->);
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NEW_POINTEUR(num,triangle,no->);
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no->triangle[num]=tri;
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no=ADRESSE(tri->n2,noeud,mesh->);
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NEW_POINTEUR(num,triangle,no->);
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no->triangle[num]=tri;
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no=ADRESSE(tri->n3,noeud,mesh->);
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NEW_POINTEUR(num,triangle,no->);
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no->triangle[num]=tri;
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tri->type=FACE;
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tri->num_ent=face->num;
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tri->crit=m2d_cal_qual(tri->n1,tri->n2,tri->n3);
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if (mesh->nb_triangle==1)
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{
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mesh->critmin=tri->crit;
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mesh->critmax=tri->crit;
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mesh->critmoy=0.;
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mesh->tabcrit[0]=0;
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mesh->tabcrit[1]=0;
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mesh->tabcrit[2]=0;
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mesh->tabcrit[3]=0;
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}
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mesh->critmoy=mesh->critmoy+tri->crit;
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if (mesh->critmin>tri->crit) mesh->critmin=tri->crit;
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if (mesh->critmax<tri->crit) mesh->critmax=tri->crit;
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if (tri->crit>0.75) mesh->tabcrit[3]++;
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else if (tri->crit>0.5) mesh->tabcrit[2]++;
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else if (tri->crit>0.25) mesh->tabcrit[1]++;
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else mesh->tabcrit[0]++;
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r3d_ins_segment(face,tri->n1,tri->n2,&(tri->segment[0]));
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r3d_ins_segment(face,tri->n2,tri->n3,&(tri->segment[1]));
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r3d_ins_segment(face,tri->n3,tri->n1,&(tri->segment[2]));
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}
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}
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for (i=0;i<mesh->nb_front_tot;i++)
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{
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ft=ADRESSE(i,front,mesh->);
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if (ft->seg->front>1) m2d_ac_front(&ft,1);
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}
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for (i=nb_segment;i<mesh->nb_segment;i++)
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{
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seg=ADRESSE(i,segment,mesh->);
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if (seg->front==1)
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{
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m2d_ac_front(&ft,2);
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ft->n1=seg->n1;
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ft->n2=seg->n2;
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ft->seg=seg;
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ft->seg->front=1;
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no=ADRESSE(ft->n1,noeud,mesh->);
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if (no->indice!=face->num)
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{
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eval_face(face,&no->u,&no->v,INVERSE,&no->x,&no->y,&no->z,0.,0.);
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no->dens=eval_fdn2b(face,no->u,no->v,TOTAL);
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no->indice=face->num;
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}
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no=ADRESSE(ft->n2,noeud,mesh->);
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if (no->indice!=face->num)
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{
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eval_face(face,&no->u,&no->v,INVERSE,&no->x,&no->y,&no->z,0.,0.);
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no->dens=eval_fdn2b(face,no->u,no->v,TOTAL);
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no->indice=face->num;
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}
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m2d_ord_front(ft);
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}
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else seg->front=0;
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}
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/* chainage du front */
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if (mesh->nb_front==0)
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{
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aff_text(R3D_INS_TRI_REC);
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}
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w[0]=0.;w[1]=0.;w[2]=1;
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nb_chaine=0;
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test=(int *)calloc(mesh->nb_front_tot,sizeof(int));
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ERREUR_ALLOC(test);
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for (ft=mesh->vide_front;ft!=NULL;ft=ft->suivant)
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test[ft->num]=1;
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while (nb_chaine!=mesh->nb_front)
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{
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ft=mesh->tete_front;
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while (test[ft->num]==1)
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ft=ft->suivant;
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ftd=ft;
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test[ftd->num]=1;
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do
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{
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ftp=ft;
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no=ADRESSE(ft->n2,noeud,mesh->);
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nb_liste=0;
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qu_rechercher(no->u,no->v,0.,mesh->root,liste,&nb_liste);
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no1f=ADRESSE(ft->n1,noeud,mesh->);
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no2f=ADRESSE(ft->n2,noeud,mesh->);
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if (mesh->rev_u!=0.) du=0.5*mesh->rev_u-no1f->u; else du=0.;
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if (mesh->rev_v!=0.) dv=0.5*mesh->rev_v-no1f->v; else dv=0.;
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eval_decale(&u1,du,no1f->u,U);
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eval_decale(&v1,dv,no1f->v,V);
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eval_decale(&u2,du,no2f->u,U);
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eval_decale(&v2,dv,no2f->v,V);
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n2n1[0]=u1-u2;
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n2n1[1]=v1-v2;
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n2n1[2]=0.;
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PVEC(nor,w,n2n1);
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NORME(n2n1);
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NORME(nor);
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ftref=NULL;
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for (i=0;i<liste[0]->nb_front;i++)
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{
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ft_courant=liste[0]->front[i];
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if (ft_courant->n1==ft->n2)
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{
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no3f=ADRESSE(ft_courant->n2,noeud,mesh->);
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eval_decale(&u3,du,no3f->u,U);
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eval_decale(&v3,dv,no3f->v,V);
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n2n3[0]=u3-u2;
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n2n3[1]=v3-v2;
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n2n3[2]=0.;
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NORME(n2n3);
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cosa=PSCA(n2n1,n2n3);
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sina=PSCA(nor,n2n3);
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if (cosa>1.) cosa=1.;
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if (cosa<-1.) cosa=(-1.);
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alpha=(float)acos((double)cosa);
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if (sina<(-0.0001)) alpha=(-alpha);
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if (alpha<0.) alpha=alpha+2*PI;
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if (ftref==NULL)
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{
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alpharef=alpha;
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ftref=ft_courant;
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}
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else if (alpha>alpharef)
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{
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alpharef=alpha;
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ftref=ft_courant;
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}
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}
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}
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ft=ftref;
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test[ft->num]=1;
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ftp->suiv=ft;
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ft->prec=ftp;
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nb_chaine++;
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}
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while(ft!=ftd);
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ftp->suiv=ftd;
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ftd->prec=ftp;
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}
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free(test);
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}
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