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 |