void lwFreeLayer( lwLayer *layer )
{
if ( layer ) {
if ( layer->name ) free( layer->name );
lwFreePoints( &layer->point );
lwFreePolygons( &layer->polygon );
lwListFree( layer->vmap, lwFreeVMap );
free( layer );
}
}
void lwFreeLayer( lwLayer *layer )
{
if ( layer ) {
if ( layer->name ) _pico_free( layer->name );
lwFreePoints( &layer->point );
lwFreePolygons( &layer->polygon );
lwListFree( layer->vmap, (void *) lwFreeVMap );
_pico_free( layer );
}
}
int lwGetPolygons5( picoMemStream_t *fp, int cksize, lwPolygonList *plist, int ptoffset )
{
lwPolygon *pp;
lwPolVert *pv;
unsigned char *buf, *bp;
int i, j, nv, nverts, npols;
if ( cksize == 0 ) return 1;
/* read the whole chunk */
set_flen( 0 );
buf = getbytes( fp, cksize );
if ( !buf ) goto Fail;
/* count the polygons and vertices */
nverts = 0;
npols = 0;
bp = buf;
while ( bp < buf + cksize ) {
nv = sgetU2( &bp );
nverts += nv;
npols++;
bp += 2 * nv;
i = sgetI2( &bp );
if ( i < 0 ) bp += 2; /* detail polygons */
}
if ( !lwAllocPolygons( plist, npols, nverts ))
goto Fail;
/* fill in the new polygons */
bp = buf;
pp = plist->pol + plist->offset;
pv = plist->pol[ 0 ].v + plist->voffset;
for ( i = 0; i < npols; i++ ) {
nv = sgetU2( &bp );
pp->nverts = nv;
pp->type = ID_FACE;
if ( !pp->v ) pp->v = pv;
for ( j = 0; j < nv; j++ )
pv[ j ].index = sgetU2( &bp ) + ptoffset;
j = sgetI2( &bp );
if ( j < 0 ) {
j = -j;
bp += 2;
}
j -= 1;
pp->surf = ( lwSurface * ) j;
pp++;
pv += nv;
}
_pico_free( buf );
return 1;
Fail:
if ( buf ) _pico_free( buf );
lwFreePolygons( plist );
return 0;
}
int lwGetPolygons( picoMemStream_t *fp, int cksize, lwPolygonList *plist, int ptoffset ){
lwPolygon *pp;
lwPolVert *pv;
unsigned char *buf, *bp;
int i, j, flags, nv, nverts, npols;
unsigned int type;
if ( cksize == 0 ) {
return 1;
}
/* read the whole chunk */
set_flen( 0 );
type = getU4( fp );
buf = getbytes( fp, cksize - 4 );
if ( cksize != get_flen() ) {
goto Fail;
}
/* count the polygons and vertices */
nverts = 0;
npols = 0;
bp = buf;
while ( bp < buf + cksize - 4 ) {
nv = sgetU2( &bp );
nv &= 0x03FF;
nverts += nv;
npols++;
for ( i = 0; i < nv; i++ )
j = sgetVX( &bp );
}
if ( !lwAllocPolygons( plist, npols, nverts ) ) {
goto Fail;
}
/* fill in the new polygons */
bp = buf;
pp = plist->pol + plist->offset;
pv = plist->pol[ 0 ].v + plist->voffset;
for ( i = 0; i < npols; i++ ) {
nv = sgetU2( &bp );
flags = nv & 0xFC00;
nv &= 0x03FF;
pp->nverts = nv;
pp->flags = flags;
pp->type = type;
if ( !pp->v ) {
pp->v = pv;
}
for ( j = 0; j < nv; j++ )
pp->v[ j ].index = sgetVX( &bp ) + ptoffset;
pp++;
pv += nv;
}
_pico_free( buf );
return 1;
Fail:
if ( buf ) {
_pico_free( buf );
}
lwFreePolygons( plist );
return 0;
}
