Function addTileCache

maprendering.c:138–181

add a cached tile to the current image's cache */

/* add a cached tile to the current image's cache */
tileCacheObj *addTileCache(imageObj *img,
                           imageObj *tile, symbolObj *symbol, symbolStyleObj *style, int width, int height) {
   tileCacheObj *cachep;

   if(img->ntiles >= MS_IMAGECACHESIZE) { /* remove last element, size stays the same */
      cachep = img->tilecache;

      /*go to the before last cache object*/
      while(cachep->next && cachep->next->next) cachep = cachep->next;

      /*free the last tile's data*/
      msFreeImage(cachep->next->image);

      /*reuse the last tile object*/
      /* make the cache point to the start of the list*/
      cachep->next->next = img->tilecache;
      /* point the global cache to the new first */
      img->tilecache = cachep->next;
      /* the before last cache is now last, so it has no successor*/
      cachep->next = NULL;

   } else {
      img->ntiles += 1;
      cachep = (tileCacheObj*)malloc(sizeof(tileCacheObj));
      MS_CHECK_ALLOC(cachep, sizeof(tileCacheObj), NULL);
      cachep->next = img->tilecache;
      img->tilecache = cachep;
   }

   cachep = img->tilecache;

   cachep->image = tile;
   cachep->outlinewidth = style->outlinewidth;
   cachep->scale = style->scale;
   cachep->rotation = style->rotation;
   cachep->outlinewidth = style->outlinewidth;
   if(style->color) MS_COPYCOLOR(&cachep->color,style->color);
   if(style->outlinecolor) MS_COPYCOLOR(&cachep->outlinecolor,style->outlinecolor);
   if(style->backgroundcolor) MS_COPYCOLOR(&cachep->backgroundcolor,style->backgroundcolor);
   cachep->width = width;
   cachep->height = height;
   cachep->symbol = symbol;
   return(cachep);
}

imageObj *getTile(imageObj *img, symbolObj *symbol,  symbolStyleObj *s, int width, int height,
      int seamlessmode) {