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#include <stdio.h>
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#include "r3d_struct.h"
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#include "m3d_const.h"
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#include "m3d_hotes.h"
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#include "m3d_macro.h"
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#include "prototype2.h"
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extern GEST_MEM *gest_r ;
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extern int debug;
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extern float eps, eps2, eps3, eps4 ;
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extern int tab_plan[4] ;
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extern float tab_vn[5][3] ;/* normales entieres du tetra */
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int r3d_cpfront2(float *coord,FACE *face,NOEUD *noe_p,FACE **finter,int *nb_face,int *ierr)
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{
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FACE *courant ;
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NOEUD *nj1, *nj2, *nj3 ;
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int i, j, is_inter, nb ;
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FACE *tab[NB_MAX_INTER] ;
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float v01[3] , v12[3], v02[3], v03[3], v13[3], v23[3] ;
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float v45[3], v56[3], v46[3] ;
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float vmin[3], vmax[3] ;
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int in0 , in1 , in2 , in3 ;
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int j1, j2, j3, num_c ;
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int tab_mark[NB_MAX_INTER] ;
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*ierr = FAUX ;
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nj1 = face->n1 ;
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nj2 = face->n2 ;
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nj3 = face->n3 ;
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num_c = noe_p->num ;
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tab_plan[0] = FAUX ;
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tab_plan[1] = FAUX ;
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tab_plan[2] = FAUX ;
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tab_plan[3] = FAUX ;
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j1 = nj1->num ;
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j2 = nj2->num ;
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j3 = nj3->num ;
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in0 = 3 * j1 ;
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in1 = 3 * j2 ;
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in2 = 3 * j3 ;
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in3 = 3 * num_c ;
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/* donnees communes */
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VECTEUR(v01,(coord+in0),(coord+in1))
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VECTEUR(v12,(coord+in1),(coord+in2))
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VECTEUR(v02,(coord+in0),(coord+in2))
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VECTEUR(v03,(coord+in0),(coord+in3))
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VECTEUR(v13,(coord+in1),(coord+in3))
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VECTEUR(v23,(coord+in2),(coord+in3))
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/* calcul des normales exterieures */
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/* face 0 2 1 */
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tab_vn[0][0] = PVECX(v02,v01) ;
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tab_vn[0][1] = PVECY(v02,v01) ;
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tab_vn[0][2] = PVECZ(v02,v01) ;
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/* face 0 1 3 */
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tab_vn[1][0] = PVECX(v01,v03) ;
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tab_vn[1][1] = PVECY(v01,v03) ;
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tab_vn[1][2] = PVECZ(v01,v03) ;
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/* face 1 2 3 */
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tab_vn[2][0] = PVECX(v12,v13) ;
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tab_vn[2][1] = PVECY(v12,v13) ;
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tab_vn[2][2] = PVECZ(v12,v13) ;
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/* face 0 3 2 */
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tab_vn[3][0] = PVECX(v03,v02) ;
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tab_vn[3][1] = PVECY(v03,v02) ;
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tab_vn[3][2] = PVECZ(v03,v02) ;
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BOITE(nj1,nj2,nj3,noe_p,vmin,vmax)
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eps = max(vmax[0]-vmin[0],vmax[1]-vmin[1]) ;
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eps = max(eps,vmax[2]-vmin[2]) ;
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eps = eps * 0.001 ;
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eps2 = eps * eps ;
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eps3 = eps2 * eps ;
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eps4 = eps3 * eps ;
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/* on prend toutes les faces de la coquille : traitement local */
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nb = 0 ;
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for (i=0;i<gest_r->nb_face;i++)
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{
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ADRESSE(face,i,courant)
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if (courant!=NULL)
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{
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if ((courant->mark!=(int)face)&&(courant!=face))
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{
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if (nb>=NB_MAX_INTER)
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{
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*ierr = VRAI ;
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if (debug) printf(" Erreur nombre d'intersections R3D_CPFRONT2 \n") ;
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return(VRAI) ;
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}
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tab[nb] = courant ;
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tab_mark[nb] = courant->mark ;
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nb ++ ;
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courant->mark=(int)face ;/* on flagge la face deja traitee */
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is_inter = m3d_intersection(coord,in0,in1,in2,in3,3*(courant->n1->num),3*(courant->n2->num),3*(courant->n3->num)) ;
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/* intersection avec une face non flottante */
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if (is_inter == VRAI)
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{
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/* on ne peut detruire la face */
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for (j=0;j<nb;j++)
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{
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courant = (FACE*)(tab[j]) ;
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courant->mark = tab_mark[j] ;
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}
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*nb_face = 0 ;
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return(VRAI) ;
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}
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}
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}
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}
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for (i=0;i<nb;i++)
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{
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courant = (FACE*)(tab[i]) ;
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courant->mark = tab_mark[i] ;
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}
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if (*nb_face == 0)
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{
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return(FAUX) ; /* pas d'intersection apres destruction */
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}
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return(FAUX) ; /* pas d'intersection apres destruction */
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}
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