bool IGN_ReadTiles(long minx, long maxx, long miny, long maxy, CProgressWindow& wndProgress,
unsigned char * bitmap_palette, long & bitmap_palette_length,
unsigned char * & bitmap_memory , long & bitmap_memory_size,
long & bitmap_width, long & dest_bitmap_width,
long & bitmap_height, long & dest_bitmap_height)
{
// PNG writing variables
CIGNTileDatabase db;
long width=400, height=400;
long x,y;
for (y=maxy-1; y>=miny; y--) {
for (x=minx; x<maxx; x++) {
if (!wndProgress.ProgressBar()) return false;
// COMMON start
if (bitmap_memory == NULL) {
// First square found so allocate memory for bitmap
bitmap_width = width*(maxx-minx);
bitmap_height = height*(maxy-miny);
dest_bitmap_width = width*(maxx-minx-2);
dest_bitmap_height = height*(maxy-miny-2);
bitmap_memory_size = bitmap_width * bitmap_height;
bitmap_memory = (BYTE *)malloc(bitmap_memory_size);
if (bitmap_memory == NULL) {
printf("Couldn't allocate %d bytes for bitmap\n", bitmap_memory_size);
//exit(0);
return false;
}
memset(bitmap_memory, 0x00, bitmap_memory_size); // assume 0x00 is white
/*
if (bitmap_width > 32000)
printf("Warning: width is %d pixels\n", bitmap_width);
if (bitmap_height > 32000)
printf("Warning: height is %d pixels\n", bitmap_height);
*/
// get palette from database
bitmap_palette_length = 4*256;
memcpy(bitmap_palette, get_ign_palette(), bitmap_palette_length);
}
// COMMON end
// copy tile into bitmap area
IGN_read_bmp(y*1000, x*1000, &db, bitmap_memory + (maxy-1-y)*height*bitmap_width+(x-minx)*width, bitmap_width);
}
}
return true;
}
int wmsLoadTiles(CTileDatabase* g_db, long minx, long miny, long maxx, long maxy, BOOL bForce, int nMapScale)
{
HINTERNET hOpen, hConnect;
char strTile[256];
hOpen = NULL;
FILE * fp_log = fopen("log.txt", "a+");
CProgressWindow wndProgress;
wndProgress.Initialize();
int nMeters = MyMap.GetMetresPerTile();
wndProgress.ResetProgressBar("Downloading:", (maxy-miny)/nMeters*(maxx-minx)/nMeters);
// Grab in (8 x 8????) tiles.
for (long y=miny; y<maxy; y+=nMeters) {
for (long x=minx; x<maxx; x+=nMeters) {
if (!wndProgress.ProgressBar()) return false;
if (!bForce && g_db->TileLoaded(y, x)) {
fprintf(fp_log, "Tile: [%05d,%05d] skipped - tile exists\n", x,y);
continue;
} else {
// Only connect to WMS if required.
// SNL 11/06/2013 - hmmmm!
CString str1 = MyMap.wmsGetAttribution();
int port = MyMap.wmsGetPort();
g_db->InitDatabase(y,x,MyMap.GetDatum());
if (hOpen == NULL) {
if ( !(hOpen = InternetOpen ( "Sample", LOCAL_INTERNET_ACCESS , NULL, 0, 0) ) ) {
ErrorOut ( GetLastError(), "InternetOpen");
return 0;
}
if ( !(hConnect = InternetConnect ( hOpen, MyMap.wmsGetAttribution(), MyMap.wmsGetPort(), "", "", INTERNET_SERVICE_HTTP, 0 , 0) ) ) {
ErrorOut (GetLastError(), "InternetConnect");
return 0;
}
}
fprintf(fp_log, "Tile: [%05d,%05d] loading...\n", x,y);
wmsGetTile(hConnect, strTile, y, x, g_db, fp_log, bForce, nMapScale);
}
if (abortProgram) {
y=miny;
x=maxx;
}
}
}
fclose(fp_log);
if (hOpen != NULL) {
if (!InternetCloseHandle (hConnect) ) {
ErrorOut (GetLastError (), "CloseHandle on hConnect");
return FALSE;
}
if (!InternetCloseHandle (hOpen) ) {
ErrorOut (GetLastError (), "CloseHandle on hOpen");
return FALSE;
}
}
return 0;
}
bool IGN_Create_PNG_JPR(LPCSTR mapname, long minx, long miny, long maxx, long maxy)
{
char tstring[256];
long bitmap_width = TILE_WIDTH*(maxx-minx)/1000;
long bitmap_size = bitmap_width*TILE_WIDTH;
unsigned char * bitmap_memory = (unsigned char *)malloc(bitmap_size);
CIGNTileDatabase db;
if (bitmap_memory == NULL) {
printf("Couldn't allocate %d bytes of memory\n");
return false;
}
// Create PNG header and write out palette
sprintf(tstring, "%s.png", mapname);
FILE * fp_png = fopen(tstring, "wb");
if (fp_png == NULL) {
printf("Couldn't open %s\n", tstring);
return false;
}
// Create and initialize the png_struct with the desired error handler functions.
png_structp png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
if (png_ptr == NULL) {
fclose(fp_png);
return false;
}
/* Allocate/initialize the image information data. REQUIRED */
png_infop info_ptr = png_create_info_struct(png_ptr);
if (info_ptr == NULL) {
png_destroy_write_struct(&png_ptr, (png_infopp)NULL);
fclose(fp_png);
return false;
}
/* Set error handling. REQUIRED */
if (setjmp(png_jmpbuf(png_ptr))) {
/* If we get here, we had a problem reading the file */
png_destroy_write_struct(&png_ptr, &info_ptr);
fclose(fp_png);
return false;
}
/* set up the output control if you are using standard C streams */
png_init_io(png_ptr, fp_png);
/* Set the image information here. Width and height are up to 2^31,
* bit_depth is one of 1, 2, 4, 8, or 16, but valid values also depend on
* the color_type selected. color_type is one of PNG_COLOR_TYPE_GRAY,
* PNG_COLOR_TYPE_GRAY_ALPHA, PNG_COLOR_TYPE_PALETTE, PNG_COLOR_TYPE_RGB,
* or PNG_COLOR_TYPE_RGB_ALPHA. interlace is either PNG_INTERLACE_NONE or
* PNG_INTERLACE_ADAM7, and the compression_type and filter_type MUST
* currently be PNG_COMPRESSION_TYPE_BASE and PNG_FILTER_TYPE_BASE. REQUIRED
*/
png_set_IHDR(png_ptr, info_ptr, TILE_WIDTH*(maxx-minx)/1000, TILE_WIDTH*((maxy-miny)/1000), 8, PNG_COLOR_TYPE_PALETTE,
PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);
/* set the palette if there is one. REQUIRED for indexed-color images */
png_colorp png_palette = (png_colorp)png_malloc(png_ptr, PNG_MAX_PALETTE_LENGTH * sizeof (png_color));
int i;
BYTE * pal_ptr = (BYTE *)png_palette;
BYTE * palette = ign_palette;
for (i=0; i<256; i++) {
*pal_ptr++ = palette[i*4 + 2];
*pal_ptr++ = palette[i*4 + 1];
*pal_ptr++ = palette[i*4 + 0];
}
/* ... set palette colors ... */
png_set_PLTE(png_ptr, info_ptr, png_palette, PNG_MAX_PALETTE_LENGTH);
/* You must not free palette here, because png_set_PLTE only makes a link to
* the palette that you malloced. Wait until you are about to destroy
*the png structure. */
/* Write the file header information. REQUIRED */
png_write_info(png_ptr, info_ptr);
CProgressWindow wndProgress;
wndProgress.Initialize();
wndProgress.ResetProgressBar("Tile:", (maxy-miny)/500*(maxx-minx)/500);
for (int y=maxy-1000; y>=miny; y-=1000) {
memset(bitmap_memory, 0x00, bitmap_size);
for (int x=minx; x<maxx; x+=1000) {
IGN_read_bmp(y, x, &db, bitmap_memory+(x-minx)/1000*TILE_WIDTH, bitmap_width);
}
// write row of PNG to file
for (int x=0; x<TILE_WIDTH; x++) {
png_write_row(png_ptr, bitmap_memory + x*bitmap_width);
if (!wndProgress.ProgressBar()) return false;
}
}
/* It is REQUIRED to call this to finish writing the rest of the file */
png_write_end(png_ptr, info_ptr);
png_free(png_ptr, png_palette);
/* clean up after the write, and free any memory allocated */
png_destroy_write_struct(&png_ptr, &info_ptr);
/* close the file */
fclose(fp_png);
// IGN_dumpjprfile(mapname, minx, miny, maxx, maxy, (maxx-minx)/1000 * TILE_WIDTH, (maxy-miny)/1000*TILE_WIDTH, NULL);
free(bitmap_memory);
return true;
}
bool CreateJNXJpeg(JPEG_tile_list& tiles, long minx, long maxx, long miny, long maxy, CString mapname, long tileWidth, long tileHeight, int nDatabase, int nDrawOrder)
{
CProgressWindow wndProgress;
wndProgress.Initialize();
// ToFix as this ain't right!
double dMetersPerPixel = (double) MyMap.GetMetresPerTile()/MyMap.GetPixelsPerTile();
int nTileWidth = MyMap.GetMetresPerTile();
// JKL's code to create the JPEGs
// long width, height;
// long x,y;
unsigned char * bitmap_memory = NULL;
long bitmap_width, dest_bitmap_width;
long bitmap_height, dest_bitmap_height;
long bitmap_memory_size;
// long square_width;
// long square_height;
unsigned char bitmap_palette[1024];
long bitmap_palette_length;
if (minx > maxx) {
long t = minx;
minx = maxx;
maxx = t;
}
if (miny > maxy) {
long t = miny;
miny = maxy;
maxy = t;
}
// long collar = CalculateCollar(minx*1000, maxx*1000, miny*1000, maxy*1000);
long collar = CalculateCollar(minx, maxx, miny, maxy);
minx -= (collar/1000)*1000;
maxx += (collar/1000)*1000;
miny -= (collar/1000)*1000;
maxy += (collar/1000)*1000;
wndProgress.ResetProgressBar("Tile:", ((maxy-miny)*(maxx-minx))/1000*1000);
bool successful = false;
if (nDatabase == DBASE_LOCAL) {
if (MyMap.GetCountry() == COUNTRY_FR && MyMap.GetProduct() == PRODUCT_02) {
successful = IGN_ReadTiles(minx, maxx, miny, maxy, wndProgress,
bitmap_palette, bitmap_palette_length,
bitmap_memory , bitmap_memory_size,
bitmap_width, dest_bitmap_width,
bitmap_height, dest_bitmap_height);
} else {
successful = OSPro_ReadTiles(minx, maxx, miny, maxy, wndProgress,
bitmap_palette, bitmap_palette_length,
bitmap_memory , bitmap_memory_size,
bitmap_width, dest_bitmap_width,
bitmap_height, dest_bitmap_height);
}
} else {
bool b_use_TL3 = nDatabase == DBASE_TRACKLOGS_3;
successful = ReadTracklogsTile(minx, maxx, miny, maxy, wndProgress,
bitmap_palette, bitmap_palette_length,
bitmap_memory , bitmap_memory_size,
bitmap_width, dest_bitmap_width,
bitmap_height, dest_bitmap_height,
b_use_TL3);
}
// dest_bitmap_width = 400*(maxx-minx-2*collar/1000);
// dest_bitmap_height = 400*(maxy-miny-2*collar/1000);
dest_bitmap_width = nTileWidth*((maxx-minx-(2*collar))/1000);
dest_bitmap_height = nTileWidth*((maxy-miny-(2*collar))/1000);
if (!successful) {
if (bitmap_memory)
free(bitmap_memory);
return false;
}
if (bitmap_memory == NULL) {
printf("No images to process\n");
return false;
}
Gdiplus::GdiplusStartupInput gdiplusStartupInput;
ULONG_PTR gdiplusToken;
Gdiplus::GdiplusStartup(&gdiplusToken, &gdiplusStartupInput, NULL);
CLSID encoderClsid;
// Get the CLSID of the JPEG encoder.
GetEncoderClsid(L"image/jpeg", &encoderClsid);
Gdiplus::EncoderParameters encoderParameters;
encoderParameters.Count = 1;
ULONG quality = 80;
encoderParameters.Parameter[0].Guid = Gdiplus::EncoderQuality;
encoderParameters.Parameter[0].Type = Gdiplus::EncoderParameterValueTypeLong;
encoderParameters.Parameter[0].NumberOfValues = 1;
encoderParameters.Parameter[0].Value = &quality;
// xy
// 00 10 20 30 40
// 01 11 21 31 41
// 02 12 22 32 42
// 03 13 23 33 43
/*
minx *= 1000;
maxx *= 1000;
miny *= 1000;
maxy *= 1000;
*/
double lat,lon;
OZIGEN_NorthingEasting_to_LatLon(maxy-collar, minx+collar, &lat, &lon);
double minlat = lat;
double maxlat = lat;
double minlon = lon;
double maxlon = lon;
OZIGEN_NorthingEasting_to_LatLon(maxy-collar, maxx-collar, &lat, &lon);
if (lat < minlat) minlat = lat;
if (lat > maxlat) maxlat = lat;
if (lon < minlon) minlon = lon;
if (lon > maxlon) maxlon = lon;
OZIGEN_NorthingEasting_to_LatLon(miny+collar, minx+collar, &lat, &lon);
if (lat < minlat) minlat = lat;
if (lat > maxlat) maxlat = lat;
if (lon < minlon) minlon = lon;
if (lon > maxlon) maxlon = lon;
OZIGEN_NorthingEasting_to_LatLon(miny+collar, maxx-collar, &lat, &lon);
if (lat < minlat) minlat = lat;
if (lat > maxlat) maxlat = lat;
if (lon < minlon) minlon = lon;
if (lon > maxlon) maxlon = lon;
OZIGEN_LatLon_to_NorthingEasting(minlat, minlon, &lat, &lon);
OZIGEN_LatLon_to_NorthingEasting(minlat, maxlon, &lat, &lon);
OZIGEN_LatLon_to_NorthingEasting(maxlat, maxlon, &lat, &lon);
OZIGEN_LatLon_to_NorthingEasting(maxlat, minlon, &lat, &lon);
char jnxName[512];
GetCurrentDirectory(sizeof(jnxName), jnxName);
CString Currdir = jnxName; // Save current directory
// change directory to %TEMP% and make folder 'files'
GetTempPath(sizeof(jnxName), jnxName);
SetCurrentDirectory(jnxName);
CreateDirectory("files", NULL);
// sprintf(jnxName, "%s\\%s.kmz", Currdir, mapname);
long nTilesAcross=(dest_bitmap_width+(tileWidth-1))/tileWidth;
long nTilesDown=(dest_bitmap_height+(tileHeight-1))/tileHeight;
// KMZ_tiles tiles; - gone global
long across, down;
for (across=0; across<nTilesAcross; across++) {
for (down=0; down<nTilesDown; down++) {
JPEG_tile * pTile = new JPEG_tile;
pTile->fname.Format("files/c%02d%02d.jpg", down, across);
pTile->lat_north = minlat+(maxlat-minlat)*(nTilesDown-down)/nTilesDown;
pTile->lon_east = minlon+(maxlon-minlon)*(across+1)/nTilesAcross;
pTile->lat_south = minlat+(maxlat-minlat)*(nTilesDown-down-1)/nTilesDown;
pTile->lon_west = minlon+(maxlon-minlon)*across/nTilesAcross;
pTile->offset_x0 = dest_bitmap_width*across/nTilesAcross;
pTile->offset_x1 = dest_bitmap_width*(across+1)/nTilesAcross;
pTile->offset_y0 = dest_bitmap_height*down/nTilesDown;
pTile->offset_y1 = dest_bitmap_height*(down+1)/nTilesDown;
tiles.AddTail(pTile);
}
}
Global_AddToResultsWindow("Number of tiles = %d",tiles.GetCount());
// SNL
wndProgress.ResetProgressBar("JPEG:",tiles.GetCount());
long tileCount=0;
long index = 1;
POSITION pos;
for (pos=tiles.GetHeadPosition(); pos != NULL; tiles.GetNext(pos)) {
wndProgress.ProgressBar();
if (wndProgress.m_Cancelled) return false;
JPEG_tile * pTile = (JPEG_tile *)tiles.GetAt(pos);
Gdiplus::Rect r(0, 0, pTile->offset_x1-pTile->offset_x0, pTile->offset_y1-pTile->offset_y0);
Gdiplus::Bitmap bmp(r.GetRight(), r.GetBottom(), PixelFormat24bppRGB );
Gdiplus::BitmapData bmpData;
bmp.LockBits(&r, Gdiplus::ImageLockModeRead | Gdiplus::ImageLockModeWrite, PixelFormat24bppRGB, &bmpData);
long x,y;
for (y=pTile->offset_y0; y<pTile->offset_y1; y++) {
lat = maxlat-(maxlat-minlat)/dest_bitmap_height*y;
unsigned char * dest_bitmap_offset = ((unsigned char *)bmpData.Scan0) + bmpData.Stride*(y-pTile->offset_y0);
for (x=pTile->offset_x0; x<pTile->offset_x1; x++) {
lon = minlon+(maxlon-minlon)/dest_bitmap_width*x;
double northing, easting;
OZIGEN_LatLon_to_NorthingEasting(lat, lon, &northing, &easting);
northing += 0.5;
easting += 0.5;
if (northing < miny || easting < minx || northing > maxy || easting > maxx) {
// No bitmap data present -- white
*dest_bitmap_offset++ = 255;
*dest_bitmap_offset++ = 255;
*dest_bitmap_offset++ = 255;
} else {
// Look up colour of bitmap pixel
unsigned char * pal = bitmap_palette +
4*bitmap_memory[(long)((maxy-northing)/dMetersPerPixel)*bitmap_width +
(long)((easting-minx)/dMetersPerPixel)];
*dest_bitmap_offset++ = pal[0];
*dest_bitmap_offset++ = pal[1];
*dest_bitmap_offset++ = pal[2];
}
}
}
bmp.UnlockBits(&bmpData);
wchar_t wbuffer[64];
int i;
for (i=0; i<pTile->fname.GetLength(); i++)
wbuffer[i] = pTile->fname.GetAt(i);
wbuffer[i] = 0;
bmp.Save(wbuffer, &encoderClsid, &encoderParameters);
tileCount++;
}
SetCurrentDirectory(Currdir);
// tiles.RemoveAll();
/*
if (nPoints) {
free(points);
nPoints = 0;
points = NULL;
}
*/
Gdiplus::GdiplusShutdown(gdiplusToken);
free(bitmap_memory);
// Next bit from Map2JNX
// up to five levels. nLevels gives the actual count
static level_t levels[5];
// information about all files
static std::list<file_t> files;
// the JNX file header to be copied to the outfile
static jnx_hdr_t jnx_hdr;
// the tile information table for all 5 levels
static jnx_tile_t tileTable[JNX_MAX_TILES * 5];
const uint8_t dummy = 0;
uint32_t tileTableStart = 0;
uint32_t tileCnt = 0;
const char *jnx_copyright = "Unknown";
const char *jnx_subscname = "BirdsEye";
const char *jnx_mapname = "Unknown";
char *copyright_buf = NULL;
char *subscname_buf = NULL;
char *mapname_buf = NULL;
double right = -180.0;
double top = -90.0;
double left = 180.0;
double bottom = 90.0;
double scale = 0.0;
// Number of used levels
static int32_t nLevels = 1;
FILE * fid = fopen(mapname+".jnx","wb");
if(fid == 0)
{
// Failed to create file.
return false;
}
// New code writer start
// POSITION pos;
for (pos=tiles.GetHeadPosition(); pos != NULL; tiles.GetNext(pos)) {
JPEG_tile * pTile = (JPEG_tile *)tiles.GetAt(pos);
if (left > pTile->lon_west)
left = pTile->lon_west;
if (right < pTile->lon_east)
right = pTile->lon_east;
if (top < pTile->lat_north)
top = pTile->lat_north;
if (bottom > pTile->lat_south)
bottom = pTile->lat_south;
}
nLevels = 1;
// New code writer end
jnx_hdr.zorder = nDrawOrder;
jnx_hdr.left = (int32_t)((left * 0x7FFFFFFF) / 180);
jnx_hdr.top = (int32_t)((top * 0x7FFFFFFF) / 180);
jnx_hdr.right = (int32_t)((right * 0x7FFFFFFF) / 180);
jnx_hdr.bottom = (int32_t)((bottom * 0x7FFFFFFF) / 180);
jnx_hdr.details = nLevels;
for(int i=0; i<HEADER_BLOCK_SIZE; i++)
{
fwrite(&dummy, sizeof(dummy), 1, fid);
}
_fseeki64(fid,0,SEEK_SET);
fwrite(&jnx_hdr, sizeof(jnx_hdr), 1, fid);
// get all information to write the table of detail levels and the dummy tile table
int i=0;
level_t& level = levels[i];
level.nTiles = tiles.GetCount();
level.offset = HEADER_BLOCK_SIZE; // still has to be offset by complete header
level.scale = 1509;
fwrite(&level.nTiles, sizeof(level.nTiles), 1, fid);
fwrite(&level.offset, sizeof(level.offset), 1, fid);
fwrite(&level.scale, sizeof(level.scale), 1, fid);
fwrite(&level.dummy, sizeof(level.dummy), 1, fid);
fwrite(jnx_copyright, strlen(jnx_copyright) + 1, 1, fid);
// printf("\n Level %i: % 5i tiles, offset %08X, scale: %i, %ix%i", i, level.nTiles, level.offset, level.scale, level.tileSize, level.tileSize);
// write map loader info block
uint32_t blockVersion = 0x00000009;
char GUID[40];
createGUID(GUID);
fwrite(&blockVersion, sizeof(blockVersion), 1, fid);
fwrite(GUID, 37, 1, fid);
fwrite(jnx_subscname, strlen(jnx_subscname) + 1, 1, fid);
fwrite(&dummy, sizeof(dummy), 1, fid);
fwrite(&dummy, sizeof(dummy), 1, fid);
fwrite(&dummy, sizeof(dummy), 1, fid);
fwrite(jnx_mapname, strlen(jnx_mapname) + 1, 1, fid);
fwrite(&nLevels , sizeof(nLevels), 1, fid);
for(int i = 1; i <= nLevels; i++)
{
char str[40];
sprintf(str,"Level %i", i);
fwrite(str, strlen(str) + 1, 1, fid);
fwrite(str, strlen(str) + 1, 1, fid);
fwrite(jnx_copyright, strlen(jnx_copyright) + 1, 1, fid);
fwrite(&i,sizeof(i), 1, fid);
}
// write dummy tile table
tileTableStart = HEADER_BLOCK_SIZE;
_fseeki64(fid, tileTableStart, SEEK_SET);
fwrite(tileTable, sizeof(jnx_tile_t), tileCount, fid);
// New code writer start
char TempPath[512];
GetTempPath(sizeof(TempPath), TempPath);
CString tPath = TempPath;
tPath = tPath + "\\";
wndProgress.ResetProgressBar("JNX:",tiles.GetCount());
for (pos=tiles.GetHeadPosition(); pos != NULL; tiles.GetNext(pos)) {
JPEG_tile * pTile = (JPEG_tile *)tiles.GetAt(pos);
// printf("JPEG %d of %d\r", tileCnt, tiles.GetCount());
jnx_tile_t& tile = tileTable[tileCnt++];
tile.left = (int32_t)(pTile->lon_west * 0x7FFFFFFF / 180);
tile.top = (int32_t)(pTile->lat_north * 0x7FFFFFFF / 180);
tile.right = (int32_t)(pTile->lon_east * 0x7FFFFFFF / 180);
tile.bottom = (int32_t)(pTile->lat_south * 0x7FFFFFFF / 180);
tile.width = (uint16_t)(pTile->offset_x1-pTile->offset_x0);
tile.height = (uint16_t)(pTile->offset_y1-pTile->offset_y0);
tile.offset = (uint32_t)(_ftelli64(fid) & 0x0FFFFFFFF);
tile.size = appendJPG(tPath + pTile->fname, fid);
}
// New code writer end
// terminate output file
fwrite("BirdsEye", 8, 1, fid);
// write final tile table
_fseeki64(fid, tileTableStart, SEEK_SET);
fwrite(tileTable, sizeof(jnx_tile_t), tileCount, fid);
// done
fclose(fid);
exit_CreateJNXJpeg:
// Clean up
if (copyright_buf) free(copyright_buf);
if (subscname_buf) free(subscname_buf);
if (mapname_buf) free(mapname_buf);
//POSITION pos;
for (pos=tiles.GetHeadPosition(); pos != NULL; tiles.GetNext(pos)) {
JPEG_tile * pTile = (JPEG_tile *)tiles.GetAt(pos);
DeleteFile(pTile->fname);
}
tiles.RemoveAll();
return true;
}