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/*****************************************************************
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r3d_rech_facette.cpp Type:Func
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Recherche d une facette correspondante a la face
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Date de creation : 14-8-1997 11 :55 :38
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Derniere version : 14-8-1997 11 :55 :38
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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 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_acis *acis;
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/**************************/
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/* programme principal */
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void r3d_rech_facette(struct s_face *face,int *nb_facette,int *tab_facette)
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{
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struct s_mfacette *mfacette;
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struct s_mnoeud *mno1,*mno2,*mno3;
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struct s_mtriangle *mtri;
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float u1,u2,u3,u,uu,du;
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float v1,v2,v3,v,vv,dv;
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int i;
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for (i=0;i<maillage->nb_mfacette;i++)
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{
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mfacette=ADRESSE(i,mfacette,maillage->);
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if (mfacette->etat==LIBRE)
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{
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mtri=mfacette->mtriangle[0];
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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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if (geo_app_point_face(face,mno1)==1)
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if (geo_app_point_face(face,mno2)==1)
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if (geo_app_point_face(face,mno3)==1)
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{
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if (mesh->rev_u!=0.) du=0.5*mesh->rev_u-mno1->u; else du=0.;
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if (mesh->rev_v!=0.) dv=0.5*mesh->rev_v-mno1->v; else dv=0.;
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eval_decale(&u2,du,mno2->u,U);
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eval_decale(&v2,dv,mno2->v,V);
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eval_decale(&u3,du,mno3->u,U);
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eval_decale(&v3,dv,mno3->v,V);
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u2=u2-du;
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v2=v2-dv;
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u3=u3-du;
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v3=v3-dv;
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eval_decale(&u1,du,mno1->u,LIBRE);
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eval_decale(&v1,dv,mno1->v,LIBRE);
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eval_decale(&u2,du,u2,LIBRE);
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eval_decale(&v2,dv,v2,LIBRE);
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eval_decale(&u3,du,u3,LIBRE);
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eval_decale(&v3,dv,v3,LIBRE);
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u=(u1+u2+u3)/3.;
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v=(v1+v2+v3)/3.;
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eval_decale(&uu,-du,u,U);
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eval_decale(&vv,-dv,v,V);
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if (geo_point_interieur(uu,vv)==1)
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{
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mfacette->etat=ATTACHE;
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tab_facette[(*nb_facette)]=i;
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(*nb_facette)++;
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mesh->nb_facette_attache++;
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}
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}
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}
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}
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}
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