| 1 |
|
1 |
/*****************************************************************
|
| 2 |
|
|
|
| 3 |
|
|
m3d_angle_front.cpp Type:func
|
| 4 |
|
|
|
| 5 |
|
|
Calcul l'angle entre deux triangles de front voisins
|
| 6 |
|
|
|
| 7 |
|
|
Date de creation : 8-3-1999 15 :56 :44
|
| 8 |
|
|
Derniere version : 8-3-1999 15 :56 :44
|
| 9 |
|
|
|
| 10 |
|
|
Vincent FRANCOIS
|
| 11 |
|
|
|
| 12 |
|
|
*****************************************************************/
|
| 13 |
|
|
|
| 14 |
|
|
|
| 15 |
|
|
|
| 16 |
|
|
|
| 17 |
|
|
|
| 18 |
|
|
/**************************/
|
| 19 |
|
|
/* include */
|
| 20 |
|
|
#include <stdio.h>
|
| 21 |
|
|
#include <string.h>
|
| 22 |
|
|
#include <stdlib.h>
|
| 23 |
|
|
#include <math.h>
|
| 24 |
|
|
#include "const.h"
|
| 25 |
|
|
#include "memoire.h"
|
| 26 |
|
|
#include "struct.h"
|
| 27 |
|
|
#include "prototype.h"
|
| 28 |
|
|
|
| 29 |
|
|
/**************************/
|
| 30 |
|
|
/* variables globales */
|
| 31 |
|
|
extern struct environnement env;
|
| 32 |
|
|
extern struct s_mesh *mesh;
|
| 33 |
|
|
|
| 34 |
|
|
|
| 35 |
|
|
|
| 36 |
|
|
/**************************/
|
| 37 |
|
|
/* programme principal */
|
| 38 |
|
|
|
| 39 |
|
|
float m3d_angle_front(struct s_front3d *ft1, struct s_front3d *ft2)
|
| 40 |
|
|
{
|
| 41 |
|
|
struct s_noeud *no1,*no2,*no3,*no4,*no5,*no6,*noa,*nob,*noc,*nod;
|
| 42 |
|
|
float n1n2[4],n1n3[4],n1[4],n[4],bc[4];
|
| 43 |
|
|
float n2[4];
|
| 44 |
|
|
float nbnd[4],milieu[4];
|
| 45 |
|
|
float angle;
|
| 46 |
|
|
float ps;
|
| 47 |
|
|
|
| 48 |
|
|
no1=ADRESSE(ft1->n1,noeud,mesh->);
|
| 49 |
|
|
no2=ADRESSE(ft1->n2,noeud,mesh->);
|
| 50 |
|
|
no3=ADRESSE(ft1->n3,noeud,mesh->);
|
| 51 |
|
|
no4=ADRESSE(ft2->n1,noeud,mesh->);
|
| 52 |
|
|
no5=ADRESSE(ft2->n2,noeud,mesh->);
|
| 53 |
|
|
no6=ADRESSE(ft2->n3,noeud,mesh->);
|
| 54 |
|
|
|
| 55 |
|
|
|
| 56 |
|
|
if (!(no1==no4))
|
| 57 |
|
|
if (!(no1==no5))
|
| 58 |
|
|
if (!(no1==no6))
|
| 59 |
|
|
{
|
| 60 |
|
|
noa=no1;
|
| 61 |
|
|
nob=no2;
|
| 62 |
|
|
noc=no3;
|
| 63 |
|
|
}
|
| 64 |
|
|
if (!(no2==no4))
|
| 65 |
|
|
if (!(no2==no5))
|
| 66 |
|
|
if (!(no2==no6))
|
| 67 |
|
|
{
|
| 68 |
|
|
noa=no2;
|
| 69 |
|
|
nob=no1;
|
| 70 |
|
|
noc=no3;
|
| 71 |
|
|
}
|
| 72 |
|
|
if (!(no3==no4))
|
| 73 |
|
|
if (!(no3==no5))
|
| 74 |
|
|
if (!(no3==no6))
|
| 75 |
|
|
{
|
| 76 |
|
|
noa=no3;
|
| 77 |
|
|
nob=no1;
|
| 78 |
|
|
noc=no2;
|
| 79 |
|
|
}
|
| 80 |
|
|
if (!(no4==nob))
|
| 81 |
|
|
if (!(no4==noc))
|
| 82 |
|
|
nod=no4;
|
| 83 |
|
|
if (!(no5==nob))
|
| 84 |
|
|
if (!(no5==noc))
|
| 85 |
|
|
nod=no5;
|
| 86 |
|
|
if (!(no6==nob))
|
| 87 |
|
|
if (!(no6==noc))
|
| 88 |
|
|
nod=no6;
|
| 89 |
|
|
|
| 90 |
|
|
milieu[0]=0.5*(nob->x+noc->x);
|
| 91 |
|
|
milieu[1]=0.5*(nob->y+noc->y);
|
| 92 |
|
|
milieu[2]=0.5*(nob->z+noc->z);
|
| 93 |
|
|
|
| 94 |
|
|
VEC(bc,nob,noc);
|
| 95 |
|
|
NORME(bc);
|
| 96 |
|
|
|
| 97 |
|
|
n1[0]=noa->x-milieu[0];
|
| 98 |
|
|
n1[1]=noa->y-milieu[1];
|
| 99 |
|
|
n1[2]=noa->z-milieu[2];
|
| 100 |
|
|
NORME(n1);
|
| 101 |
|
|
PVEC(n,bc,n1);
|
| 102 |
|
|
PVEC(n1,n,bc);
|
| 103 |
|
|
NORME(n1);
|
| 104 |
|
|
|
| 105 |
|
|
n2[0]=nod->x-milieu[0];
|
| 106 |
|
|
n2[1]=nod->y-milieu[1];
|
| 107 |
|
|
n2[2]=nod->z-milieu[2];
|
| 108 |
|
|
NORME(n2);
|
| 109 |
|
|
PVEC(n,bc,n2);
|
| 110 |
|
|
PVEC(n2,n,bc);
|
| 111 |
|
|
NORME(n2);
|
| 112 |
|
|
|
| 113 |
|
|
|
| 114 |
|
|
ps=PSCA(n1,n2);
|
| 115 |
|
|
if (ps>1.) ps=1.;
|
| 116 |
|
|
if (ps<-1.) ps=-1.;
|
| 117 |
|
|
angle=(float)acos((double)ps);
|
| 118 |
|
|
VEC(n1n2,no1,no2);
|
| 119 |
|
|
VEC(n1n3,no1,no3);
|
| 120 |
|
|
PVEC(n,n1n2,n1n3);
|
| 121 |
|
|
VEC(nbnd,nob,nod);
|
| 122 |
|
|
NORME(n);
|
| 123 |
|
|
NORME(nbnd);
|
| 124 |
|
|
if (PSCA(n,nbnd)<0.0001) angle=2*PI-angle ;
|
| 125 |
|
|
return(angle);
|
| 126 |
|
|
}
|
