-/*\r
-======================================================================\r
-vmap.c\r
-\r
-Vertex map functions for an LWO2 reader.\r
-\r
-Ernie Wright 17 Sep 00\r
-====================================================================== */\r
-\r
-#include "../picointernal.h"\r
-#include "lwo2.h"\r
-\r
-\r
-/*\r
-======================================================================\r
-lwFreeVMap()\r
-\r
-Free memory used by an lwVMap.\r
-====================================================================== */\r
-\r
-void lwFreeVMap( lwVMap *vmap )\r
-{\r
- if ( vmap ) {\r
- if ( vmap->name ) _pico_free( vmap->name );\r
- if ( vmap->vindex ) _pico_free( vmap->vindex );\r
- if ( vmap->pindex ) _pico_free( vmap->pindex );\r
- if ( vmap->val ) {\r
- if ( vmap->val[ 0 ] ) _pico_free( vmap->val[ 0 ] );\r
- _pico_free( vmap->val );\r
- }\r
- _pico_free( vmap );\r
- }\r
-}\r
-\r
-\r
-/*\r
-======================================================================\r
-lwGetVMap()\r
-\r
-Read an lwVMap from a VMAP or VMAD chunk in an LWO2.\r
-====================================================================== */\r
-\r
-lwVMap *lwGetVMap( picoMemStream_t *fp, int cksize, int ptoffset, int poloffset,\r
- int perpoly )\r
-{\r
- unsigned char *buf, *bp;\r
- lwVMap *vmap;\r
- float *f;\r
- int i, j, npts, rlen;\r
-\r
-\r
- /* read the whole chunk */\r
-\r
- set_flen( 0 );\r
- buf = getbytes( fp, cksize );\r
- if ( !buf ) return NULL;\r
-\r
- vmap = _pico_calloc( 1, sizeof( lwVMap ));\r
- if ( !vmap ) {\r
- _pico_free( buf );\r
- return NULL;\r
- }\r
-\r
- /* initialize the vmap */\r
-\r
- vmap->perpoly = perpoly;\r
-\r
- bp = buf;\r
- set_flen( 0 );\r
- vmap->type = sgetU4( &bp );\r
- vmap->dim = sgetU2( &bp );\r
- vmap->name = sgetS0( &bp );\r
- rlen = get_flen();\r
-\r
- /* count the vmap records */\r
-\r
- npts = 0;\r
- while ( bp < buf + cksize ) {\r
- i = sgetVX( &bp );\r
- if ( perpoly )\r
- i = sgetVX( &bp );\r
- bp += vmap->dim * sizeof( float );\r
- ++npts;\r
- }\r
-\r
- /* allocate the vmap */\r
-\r
- vmap->nverts = npts;\r
- vmap->vindex = _pico_calloc( npts, sizeof( int ));\r
- if ( !vmap->vindex ) goto Fail;\r
- if ( perpoly ) {\r
- vmap->pindex = _pico_calloc( npts, sizeof( int ));\r
- if ( !vmap->pindex ) goto Fail;\r
- }\r
-\r
- if ( vmap->dim > 0 ) {\r
- vmap->val = _pico_calloc( npts, sizeof( float * ));\r
- if ( !vmap->val ) goto Fail;\r
- f = _pico_alloc( npts * vmap->dim * sizeof( float ));\r
- if ( !f ) goto Fail;\r
- for ( i = 0; i < npts; i++ )\r
- vmap->val[ i ] = f + i * vmap->dim;\r
- }\r
-\r
- /* fill in the vmap values */\r
-\r
- bp = buf + rlen;\r
- for ( i = 0; i < npts; i++ ) {\r
- vmap->vindex[ i ] = sgetVX( &bp );\r
- if ( perpoly )\r
- vmap->pindex[ i ] = sgetVX( &bp );\r
- for ( j = 0; j < vmap->dim; j++ )\r
- vmap->val[ i ][ j ] = sgetF4( &bp );\r
- }\r
-\r
- _pico_free( buf );\r
- return vmap;\r
-\r
-Fail:\r
- if ( buf ) _pico_free( buf );\r
- lwFreeVMap( vmap );\r
- return NULL;\r
-}\r
-\r
-\r
-/*\r
-======================================================================\r
-lwGetPointVMaps()\r
-\r
-Fill in the lwVMapPt structure for each point.\r
-====================================================================== */\r
-\r
-int lwGetPointVMaps( lwPointList *point, lwVMap *vmap )\r
-{\r
- lwVMap *vm;\r
- int i, j, n;\r
-\r
- /* count the number of vmap values for each point */\r
-\r
- vm = vmap;\r
- while ( vm ) {\r
- if ( !vm->perpoly )\r
- for ( i = 0; i < vm->nverts; i++ )\r
- ++point->pt[ vm->vindex[ i ]].nvmaps;\r
- vm = vm->next;\r
- }\r
-\r
- /* allocate vmap references for each mapped point */\r
-\r
- for ( i = 0; i < point->count; i++ ) {\r
- if ( point->pt[ i ].nvmaps ) {\r
- point->pt[ i ].vm = _pico_calloc( point->pt[ i ].nvmaps, sizeof( lwVMapPt ));\r
- if ( !point->pt[ i ].vm ) return 0;\r
- point->pt[ i ].nvmaps = 0;\r
- }\r
- }\r
-\r
- /* fill in vmap references for each mapped point */\r
-\r
- vm = vmap;\r
- while ( vm ) {\r
- if ( !vm->perpoly ) {\r
- for ( i = 0; i < vm->nverts; i++ ) {\r
- j = vm->vindex[ i ];\r
- n = point->pt[ j ].nvmaps;\r
- point->pt[ j ].vm[ n ].vmap = vm;\r
- point->pt[ j ].vm[ n ].index = i;\r
- ++point->pt[ j ].nvmaps;\r
- }\r
- }\r
- vm = vm->next;\r
- }\r
-\r
- return 1;\r
-}\r
-\r
-\r
-/*\r
-======================================================================\r
-lwGetPolyVMaps()\r
-\r
-Fill in the lwVMapPt structure for each polygon vertex.\r
-====================================================================== */\r
-\r
-int lwGetPolyVMaps( lwPolygonList *polygon, lwVMap *vmap )\r
-{\r
- lwVMap *vm;\r
- lwPolVert *pv;\r
- int i, j;\r
-\r
- /* count the number of vmap values for each polygon vertex */\r
-\r
- vm = vmap;\r
- while ( vm ) {\r
- if ( vm->perpoly ) {\r
- for ( i = 0; i < vm->nverts; i++ ) {\r
- for ( j = 0; j < polygon->pol[ vm->pindex[ i ]].nverts; j++ ) {\r
- pv = &polygon->pol[ vm->pindex[ i ]].v[ j ];\r
- if ( vm->vindex[ i ] == pv->index ) {\r
- ++pv->nvmaps;\r
- break;\r
- }\r
- }\r
- }\r
- }\r
- vm = vm->next;\r
- }\r
-\r
- /* allocate vmap references for each mapped vertex */\r
-\r
- for ( i = 0; i < polygon->count; i++ ) {\r
- for ( j = 0; j < polygon->pol[ i ].nverts; j++ ) {\r
- pv = &polygon->pol[ i ].v[ j ];\r
- if ( pv->nvmaps ) {\r
- pv->vm = _pico_calloc( pv->nvmaps, sizeof( lwVMapPt ));\r
- if ( !pv->vm ) return 0;\r
- pv->nvmaps = 0;\r
- }\r
- }\r
- }\r
-\r
- /* fill in vmap references for each mapped point */\r
-\r
- vm = vmap;\r
- while ( vm ) {\r
- if ( vm->perpoly ) {\r
- for ( i = 0; i < vm->nverts; i++ ) {\r
- for ( j = 0; j < polygon->pol[ vm->pindex[ i ]].nverts; j++ ) {\r
- pv = &polygon->pol[ vm->pindex[ i ]].v[ j ];\r
- if ( vm->vindex[ i ] == pv->index ) {\r
- pv->vm[ pv->nvmaps ].vmap = vm;\r
- pv->vm[ pv->nvmaps ].index = i;\r
- ++pv->nvmaps;\r
- break;\r
- }\r
- }\r
- }\r
- }\r
- vm = vm->next;\r
- }\r
-\r
- return 1;\r
-}\r
+/*
+======================================================================
+vmap.c
+
+Vertex map functions for an LWO2 reader.
+
+Ernie Wright 17 Sep 00
+====================================================================== */
+
+#include "../picointernal.h"
+#include "lwo2.h"
+
+
+/*
+======================================================================
+lwFreeVMap()
+
+Free memory used by an lwVMap.
+====================================================================== */
+
+void lwFreeVMap( lwVMap *vmap )
+{
+ if ( vmap ) {
+ if ( vmap->name ) _pico_free( vmap->name );
+ if ( vmap->vindex ) _pico_free( vmap->vindex );
+ if ( vmap->pindex ) _pico_free( vmap->pindex );
+ if ( vmap->val ) {
+ if ( vmap->val[ 0 ] ) _pico_free( vmap->val[ 0 ] );
+ _pico_free( vmap->val );
+ }
+ _pico_free( vmap );
+ }
+}
+
+
+/*
+======================================================================
+lwGetVMap()
+
+Read an lwVMap from a VMAP or VMAD chunk in an LWO2.
+====================================================================== */
+
+lwVMap *lwGetVMap( picoMemStream_t *fp, int cksize, int ptoffset, int poloffset,
+ int perpoly )
+{
+ unsigned char *buf, *bp;
+ lwVMap *vmap;
+ float *f;
+ int i, j, npts, rlen;
+
+
+ /* read the whole chunk */
+
+ set_flen( 0 );
+ buf = getbytes( fp, cksize );
+ if ( !buf ) return NULL;
+
+ vmap = _pico_calloc( 1, sizeof( lwVMap ));
+ if ( !vmap ) {
+ _pico_free( buf );
+ return NULL;
+ }
+
+ /* initialize the vmap */
+
+ vmap->perpoly = perpoly;
+
+ bp = buf;
+ set_flen( 0 );
+ vmap->type = sgetU4( &bp );
+ vmap->dim = sgetU2( &bp );
+ vmap->name = sgetS0( &bp );
+ rlen = get_flen();
+
+ /* count the vmap records */
+
+ npts = 0;
+ while ( bp < buf + cksize ) {
+ i = sgetVX( &bp );
+ if ( perpoly )
+ i = sgetVX( &bp );
+ bp += vmap->dim * sizeof( float );
+ ++npts;
+ }
+
+ /* allocate the vmap */
+
+ vmap->nverts = npts;
+ vmap->vindex = _pico_calloc( npts, sizeof( int ));
+ if ( !vmap->vindex ) goto Fail;
+ if ( perpoly ) {
+ vmap->pindex = _pico_calloc( npts, sizeof( int ));
+ if ( !vmap->pindex ) goto Fail;
+ }
+
+ if ( vmap->dim > 0 ) {
+ vmap->val = _pico_calloc( npts, sizeof( float * ));
+ if ( !vmap->val ) goto Fail;
+ f = _pico_alloc( npts * vmap->dim * sizeof( float ));
+ if ( !f ) goto Fail;
+ for ( i = 0; i < npts; i++ )
+ vmap->val[ i ] = f + i * vmap->dim;
+ }
+
+ /* fill in the vmap values */
+
+ bp = buf + rlen;
+ for ( i = 0; i < npts; i++ ) {
+ vmap->vindex[ i ] = sgetVX( &bp );
+ if ( perpoly )
+ vmap->pindex[ i ] = sgetVX( &bp );
+ for ( j = 0; j < vmap->dim; j++ )
+ vmap->val[ i ][ j ] = sgetF4( &bp );
+ }
+
+ _pico_free( buf );
+ return vmap;
+
+Fail:
+ if ( buf ) _pico_free( buf );
+ lwFreeVMap( vmap );
+ return NULL;
+}
+
+
+/*
+======================================================================
+lwGetPointVMaps()
+
+Fill in the lwVMapPt structure for each point.
+====================================================================== */
+
+int lwGetPointVMaps( lwPointList *point, lwVMap *vmap )
+{
+ lwVMap *vm;
+ int i, j, n;
+
+ /* count the number of vmap values for each point */
+
+ vm = vmap;
+ while ( vm ) {
+ if ( !vm->perpoly )
+ for ( i = 0; i < vm->nverts; i++ )
+ ++point->pt[ vm->vindex[ i ]].nvmaps;
+ vm = vm->next;
+ }
+
+ /* allocate vmap references for each mapped point */
+
+ for ( i = 0; i < point->count; i++ ) {
+ if ( point->pt[ i ].nvmaps ) {
+ point->pt[ i ].vm = _pico_calloc( point->pt[ i ].nvmaps, sizeof( lwVMapPt ));
+ if ( !point->pt[ i ].vm ) return 0;
+ point->pt[ i ].nvmaps = 0;
+ }
+ }
+
+ /* fill in vmap references for each mapped point */
+
+ vm = vmap;
+ while ( vm ) {
+ if ( !vm->perpoly ) {
+ for ( i = 0; i < vm->nverts; i++ ) {
+ j = vm->vindex[ i ];
+ n = point->pt[ j ].nvmaps;
+ point->pt[ j ].vm[ n ].vmap = vm;
+ point->pt[ j ].vm[ n ].index = i;
+ ++point->pt[ j ].nvmaps;
+ }
+ }
+ vm = vm->next;
+ }
+
+ return 1;
+}
+
+
+/*
+======================================================================
+lwGetPolyVMaps()
+
+Fill in the lwVMapPt structure for each polygon vertex.
+====================================================================== */
+
+int lwGetPolyVMaps( lwPolygonList *polygon, lwVMap *vmap )
+{
+ lwVMap *vm;
+ lwPolVert *pv;
+ int i, j;
+
+ /* count the number of vmap values for each polygon vertex */
+
+ vm = vmap;
+ while ( vm ) {
+ if ( vm->perpoly ) {
+ for ( i = 0; i < vm->nverts; i++ ) {
+ for ( j = 0; j < polygon->pol[ vm->pindex[ i ]].nverts; j++ ) {
+ pv = &polygon->pol[ vm->pindex[ i ]].v[ j ];
+ if ( vm->vindex[ i ] == pv->index ) {
+ ++pv->nvmaps;
+ break;
+ }
+ }
+ }
+ }
+ vm = vm->next;
+ }
+
+ /* allocate vmap references for each mapped vertex */
+
+ for ( i = 0; i < polygon->count; i++ ) {
+ for ( j = 0; j < polygon->pol[ i ].nverts; j++ ) {
+ pv = &polygon->pol[ i ].v[ j ];
+ if ( pv->nvmaps ) {
+ pv->vm = _pico_calloc( pv->nvmaps, sizeof( lwVMapPt ));
+ if ( !pv->vm ) return 0;
+ pv->nvmaps = 0;
+ }
+ }
+ }
+
+ /* fill in vmap references for each mapped point */
+
+ vm = vmap;
+ while ( vm ) {
+ if ( vm->perpoly ) {
+ for ( i = 0; i < vm->nverts; i++ ) {
+ for ( j = 0; j < polygon->pol[ vm->pindex[ i ]].nverts; j++ ) {
+ pv = &polygon->pol[ vm->pindex[ i ]].v[ j ];
+ if ( vm->vindex[ i ] == pv->index ) {
+ pv->vm[ pv->nvmaps ].vmap = vm;
+ pv->vm[ pv->nvmaps ].index = i;
+ ++pv->nvmaps;
+ break;
+ }
+ }
+ }
+ }
+ vm = vm->next;
+ }
+
+ return 1;
+}
projects / xonotic / netradiant.git / blobdiff