| 32 |
|
|
| 33 |
|
|
| 34 |
|
FACE * |
| 35 |
< |
getface(o) /* get arguments for a face */ |
| 36 |
< |
OBJREC *o; |
| 35 |
> |
getface( /* get arguments for a face */ |
| 36 |
> |
OBJREC *o |
| 37 |
> |
) |
| 38 |
|
{ |
| 39 |
|
double d1; |
| 40 |
|
int smalloff, badvert; |
| 41 |
|
FVECT v1, v2, v3; |
| 42 |
< |
register FACE *f; |
| 43 |
< |
register int i; |
| 42 |
> |
FACE *f; |
| 43 |
> |
int i; |
| 44 |
|
|
| 45 |
|
if ((f = (FACE *)o->os) != NULL) |
| 46 |
|
return(f); /* already done */ |
| 57 |
|
f->va = o->oargs.farg; |
| 58 |
|
f->nv = o->oargs.nfargs / 3; |
| 59 |
|
/* check for last==first */ |
| 60 |
< |
if (dist2(VERTEX(f,0),VERTEX(f,f->nv-1)) <= FTINY*FTINY) |
| 60 |
> |
if (f->nv > 3 && dist2(VERTEX(f,0),VERTEX(f,f->nv-1)) <= FTINY*FTINY) |
| 61 |
|
f->nv--; |
| 62 |
|
/* compute area and normal */ |
| 63 |
|
f->norm[0] = f->norm[1] = f->norm[2] = 0.0; |
| 107 |
|
|
| 108 |
|
|
| 109 |
|
void |
| 110 |
< |
freeface(o) /* free memory associated with face */ |
| 111 |
< |
OBJREC *o; |
| 110 |
> |
freeface( /* free memory associated with face */ |
| 111 |
> |
OBJREC *o |
| 112 |
> |
) |
| 113 |
|
{ |
| 114 |
|
if (o->os == NULL) |
| 115 |
|
return; |
| 119 |
|
|
| 120 |
|
|
| 121 |
|
int |
| 122 |
< |
inface(p, f) /* determine if point is in face */ |
| 123 |
< |
FVECT p; |
| 124 |
< |
FACE *f; |
| 122 |
> |
inface( /* determine if point is in face */ |
| 123 |
> |
FVECT p, |
| 124 |
> |
FACE *f |
| 125 |
> |
) |
| 126 |
|
{ |
| 127 |
|
int ncross, n; |
| 128 |
|
double x, y; |
| 129 |
|
int tst; |
| 130 |
< |
register int xi, yi; |
| 131 |
< |
register RREAL *p0, *p1; |
| 130 |
> |
int xi, yi; |
| 131 |
> |
RREAL *p0, *p1; |
| 132 |
|
|
| 133 |
< |
xi = (f->ax+1)%3; |
| 134 |
< |
yi = (f->ax+2)%3; |
| 133 |
> |
if ((xi = f->ax + 1) >= 3) xi -= 3; |
| 134 |
> |
if ((yi = xi + 1) >= 3) yi -= 3; |
| 135 |
|
x = p[xi]; |
| 136 |
|
y = p[yi]; |
| 137 |
|
n = f->nv; |
