| 148 |
|
MESH *mp |
| 149 |
|
) |
| 150 |
|
{ |
| 151 |
+ |
int advance = 1; |
| 152 |
|
int pn; |
| 153 |
|
MESHPATCH *pp; |
| 154 |
|
|
| 155 |
|
if (*tip == OVOID) { /* check for first index */ |
| 156 |
|
*tip = 0; |
| 157 |
< |
return(mp->npatches > 0); /* assumes 1 local triangle */ |
| 157 |
> |
advance = 0; |
| 158 |
|
} |
| 159 |
|
pn = *tip >> 10; |
| 160 |
< |
if (pn >= mp->npatches) /* past end? */ |
| 161 |
< |
return(0); |
| 162 |
< |
pp = &mp->patch[pn]; |
| 163 |
< |
if (!(*tip & 0x200)) { /* local triangle? */ |
| 164 |
< |
if ((*tip & 0x1ff) < pp->ntris-1) { |
| 165 |
< |
++*tip; |
| 166 |
< |
return(1); |
| 160 |
> |
while (pn < mp->npatches) { |
| 161 |
> |
pp = &mp->patch[pn]; |
| 162 |
> |
if (!(*tip & 0x200)) { /* local triangle? */ |
| 163 |
> |
if ((*tip & 0x1ff) < pp->ntris - advance) { |
| 164 |
> |
*tip += advance; |
| 165 |
> |
return(1); |
| 166 |
> |
} |
| 167 |
> |
*tip &= ~0x1ff; /* move on to single-joiners */ |
| 168 |
> |
*tip |= 0x200; |
| 169 |
> |
advance = 0; |
| 170 |
|
} |
| 171 |
< |
*tip &= ~0x1ff; /* move on to single-joiners */ |
| 172 |
< |
*tip |= 0x200; |
| 173 |
< |
if (pp->nj1tris) /* is there at least one? */ |
| 174 |
< |
return(1); |
| 175 |
< |
} |
| 176 |
< |
if (!(*tip & 0x100)) { /* single joiner? */ |
| 177 |
< |
if ((*tip & 0xff) < pp->nj1tris-1) { |
| 178 |
< |
++*tip; |
| 175 |
< |
return(1); |
| 171 |
> |
if (!(*tip & 0x100)) { /* single joiner? */ |
| 172 |
> |
if ((*tip & 0xff) < pp->nj1tris - advance) { |
| 173 |
> |
*tip += advance; |
| 174 |
> |
return(1); |
| 175 |
> |
} |
| 176 |
> |
*tip &= ~0xff; /* move on to double-joiners */ |
| 177 |
> |
*tip |= 0x100; |
| 178 |
> |
advance = 0; |
| 179 |
|
} |
| 180 |
< |
*tip &= ~0xff; /* move on to double-joiners */ |
| 181 |
< |
*tip |= 0x100; |
| 179 |
< |
if (pp->nj2tris) /* is there one? */ |
| 180 |
> |
if ((*tip & 0xff) < pp->nj2tris - advance) { |
| 181 |
> |
*tip += advance; |
| 182 |
|
return(1); |
| 183 |
+ |
} |
| 184 |
+ |
*tip = ++pn << 10; /* first in next patch */ |
| 185 |
+ |
advance = 0; |
| 186 |
|
} |
| 187 |
< |
if ((*tip & 0xff) < pp->nj2tris-1) { /* double-joiner? */ |
| 183 |
< |
++*tip; |
| 184 |
< |
return(1); |
| 185 |
< |
} |
| 186 |
< |
*tip = ++pn << 10; /* first in next patch */ |
| 187 |
< |
return(pn < mp->npatches); |
| 187 |
> |
return(0); /* out of patches */ |
| 188 |
|
} |
| 189 |
|
|
| 190 |
|
int |
