void draw_tiger_map (Widget w,
char *filenm,
int destination_pixmap,
int nocache) { // For future implementation of a "refresh cached map" option
char file[MAX_FILENAME]; // Complete path/name of image file
char short_filenm[MAX_FILENAME];
FILE *f; // Filehandle of image file
char fileimg[MAX_FILENAME]; // Ascii name of image file, read from GEO file
char tigertmp[MAX_FILENAME*2]; // Used for putting together the tigermap query
int width, height;
tiepoint tp[2]; // Calibration points for map, read in from .geo file
register long map_c_T, map_c_L; // map delta NW edge coordinates, DNN: these should be signed
register long tp_c_dx, tp_c_dy; // tiepoint coordinate differences
unsigned long c_x_min, c_y_min;// top left coordinates of map inside screen
unsigned long c_y_max; // bottom right coordinates of map inside screen
double c_x; // Xastir coordinates 1/100 sec, 0 = 180°W
double c_y; // Xastir coordinates 1/100 sec, 0 = 90°N
long map_y_0; // map pixel pointer prior to TM adjustment
register long map_x, map_y; // map pixel pointers, DNN: this was a float, chg to long
long map_x_min, map_x_max; // map boundaries for in screen part of map
long map_y_min, map_y_max; //
long map_x_ctr; // half map width in pixel
long map_y_ctr; // half map height in pixel
int map_seen = 0;
int map_act;
int map_done;
long map_c_yc; // map center, vert coordinate
long map_c_xc; // map center, hor coordinate
double map_c_dx, map_c_dy; // map coordinates increment (pixel width)
double c_dx; // adjusted map pixel width
long scr_x, scr_y; // screen pixel plot positions
long scr_xp, scr_yp; // previous screen plot positions
int scr_dx, scr_dy; // increments in screen plot positions
long scr_x_mc; // map center in screen units
long scr_c_xr;
long scale_xa; // adjusted for topo maps
double scale_x_nm; // nm per Xastir coordinate unit
long scale_x0; // at widest map area
char local_filename[MAX_FILENAME];
ExceptionInfo exception;
Image *image;
ImageInfo *image_info;
PixelPacket *pixel_pack;
PixelPacket temp_pack;
IndexPacket *index_pack;
int l;
XColor my_colors[256];
double left, right, top, bottom, map_width, map_height;
double lat_center = 0;
double long_center = 0;
char map_it[MAX_FILENAME];
char tmpstr[100];
int geo_image_width; // Image width from GEO file
int geo_image_height; // Image height from GEO file
// initialize this
local_filename[0]='\0';
// Create a shorter filename for display (one that fits the
// status line more closely). Subtract the length of the
// "Indexing " and/or "Loading " strings as well.
if (strlen(filenm) > (41 - 9)) {
int avail = 41 - 11;
int new_len = strlen(filenm) - avail;
xastir_snprintf(short_filenm,
sizeof(short_filenm),
"..%s",
&filenm[new_len]);
}
else {
xastir_snprintf(short_filenm,
sizeof(short_filenm),
"%s",
filenm);
}
xastir_snprintf(map_it,
sizeof(map_it),
langcode ("BBARSTA028"),
short_filenm);
statusline(map_it,0); // Loading ...
// Check whether we're indexing or drawing the map
if ( (destination_pixmap == INDEX_CHECK_TIMESTAMPS)
|| (destination_pixmap == INDEX_NO_TIMESTAMPS) ) {
// We're indexing only. Save the extents in the index.
// Force the extents to the edges of the earth for the
// index file.
index_update_xastir(filenm, // Filename only
64800000l, // Bottom
0l, // Top
0l, // Left
129600000l, // Right
0); // Default Map Level
// Update statusline
xastir_snprintf(map_it,
sizeof(map_it),
langcode ("BBARSTA039"),
short_filenm);
statusline(map_it,0); // Loading/Indexing ...
return; // Done indexing this file
}
// Tiepoint for upper left screen corner
//
tp[0].img_x = 0; // Pixel Coordinates
tp[0].img_y = 0; // Pixel Coordinates
tp[0].x_long = NW_corner_longitude; // Xastir Coordinates
tp[0].y_lat = NW_corner_latitude; // Xastir Coordinates
// Tiepoint for lower right screen corner
//
tp[1].img_x = screen_width - 1; // Pixel Coordinates
tp[1].img_y = screen_height - 1; // Pixel Coordinates
tp[1].x_long = SE_corner_longitude; // Xastir Coordinates
tp[1].y_lat = SE_corner_latitude; // Xastir Coordinates
left = (double)((NW_corner_longitude - 64800000l )/360000.0); // Lat/long Coordinates
top = (double)(-((NW_corner_latitude - 32400000l )/360000.0)); // Lat/long Coordinates
right = (double)((SE_corner_longitude - 64800000l)/360000.0);//Lat/long Coordinates
bottom = (double)(-((SE_corner_latitude - 32400000l)/360000.0));//Lat/long Coordinates
map_width = right - left; // Lat/long Coordinates
map_height = top - bottom; // Lat/long Coordinates
geo_image_width = screen_width;
geo_image_height = screen_height;
long_center = (left + right)/2.0l;
lat_center = (top + bottom)/2.0l;
// Example query to the census map server....
/* xastir_snprintf(fileimg, sizeof(fileimg),
"\'http://tiger.census.gov/cgi-bin/mapper/map.gif?on=CITIES&on=GRID&on=counties&on=majroads&on=places&&on=interstate&on=states&on=ushwy&on=statehwy&lat=%f\046lon=%f\046wid=%f\046ht=%f\046iwd=%i\046iht=%i\'",\
lat_center, long_center, map_width, map_height, tp[1].img_x + 1, tp[1].img_y + 1); */
xastir_snprintf(tigertmp, sizeof(tigertmp), "http://tiger.census.gov/cgi-bin/mapper/map.gif?");
if (tiger_show_grid)
strncat(tigertmp, "&on=GRID", sizeof(tigertmp) - 1 - strlen(tigertmp));
else
strncat(tigertmp, "&off=GRID", sizeof(tigertmp) - 1 - strlen(tigertmp));
if (tiger_show_counties)
strncat(tigertmp, "&on=counties", sizeof(tigertmp) - 1 - strlen(tigertmp));
else
strncat(tigertmp, "&off=counties", sizeof(tigertmp) - 1 - strlen(tigertmp));
if (tiger_show_cities)
strncat(tigertmp, "&on=CITIES", sizeof(tigertmp) - 1 - strlen(tigertmp));
else
strncat(tigertmp, "&off=CITIES", sizeof(tigertmp) - 1 - strlen(tigertmp));
if (tiger_show_places)
strncat(tigertmp, "&on=places", sizeof(tigertmp) - 1 - strlen(tigertmp));
else
strncat(tigertmp, "&off=places", sizeof(tigertmp) - 1 - strlen(tigertmp));
if (tiger_show_majroads)
strncat(tigertmp, "&on=majroads", sizeof(tigertmp) - 1 - strlen(tigertmp));
else
strncat(tigertmp, "&off=majroads", sizeof(tigertmp) - 1 - strlen(tigertmp));
if (tiger_show_streets)
strncat(tigertmp, "&on=streets", sizeof(tigertmp) - 1 - strlen(tigertmp));
// Don't turn streets off since this will automagically show up as you zoom in.
if (tiger_show_railroad)
strncat(tigertmp, "&on=railroad", sizeof(tigertmp) - 1 - strlen(tigertmp));
else
strncat(tigertmp, "&off=railroad", sizeof(tigertmp) - 1 - strlen(tigertmp));
if (tiger_show_states)
strncat(tigertmp, "&on=states", sizeof(tigertmp) - 1 - strlen(tigertmp));
else
strncat(tigertmp, "&off=states", sizeof(tigertmp) - 1 - strlen(tigertmp));
if (tiger_show_interstate)
strncat(tigertmp, "&on=interstate", sizeof(tigertmp) - 1 - strlen(tigertmp));
else
strncat(tigertmp, "&off=interstate", sizeof(tigertmp) - 1 - strlen(tigertmp));
if (tiger_show_ushwy)
strncat(tigertmp, "&on=ushwy", sizeof(tigertmp) - 1 - strlen(tigertmp));
else
strncat(tigertmp, "&off=ushwy", sizeof(tigertmp) - 1 - strlen(tigertmp));
if (tiger_show_statehwy)
strncat(tigertmp, "&on=statehwy", sizeof(tigertmp) - 1 - strlen(tigertmp));
else
strncat(tigertmp, "&off=statehwy", sizeof(tigertmp) - 1 - strlen(tigertmp));
if (tiger_show_water)
strncat(tigertmp, "&on=water", sizeof(tigertmp) - 1 - strlen(tigertmp));
else
strncat(tigertmp, "&off=water", sizeof(tigertmp) - 1 - strlen(tigertmp));
if (tiger_show_lakes)
strncat(tigertmp, "&on=shorelin", sizeof(tigertmp) - 1 - strlen(tigertmp));
else
strncat(tigertmp, "&off=shorelin", sizeof(tigertmp) - 1 - strlen(tigertmp));
if (tiger_show_misc)
strncat(tigertmp, "&on=miscell", sizeof(tigertmp) - 1 - strlen(tigertmp));
else
strncat(tigertmp, "&off=miscell", sizeof(tigertmp) - 1 - strlen(tigertmp));
xastir_snprintf(tmpstr, sizeof(tmpstr), "&lat=%f\046lon=%f\046", lat_center, long_center);
strncat (tigertmp, tmpstr, sizeof(tigertmp) - 1 - strlen(tigertmp));
xastir_snprintf(tmpstr, sizeof(tmpstr), "wid=%f\046ht=%f\046", map_width, map_height);
strncat (tigertmp, tmpstr, sizeof(tigertmp) - 1 - strlen(tigertmp));
xastir_snprintf(tmpstr, sizeof(tmpstr), "iwd=%i\046iht=%i", tp[1].img_x + 1, tp[1].img_y + 1);
strncat (tigertmp, tmpstr, sizeof(tigertmp) - 1 - strlen(tigertmp));
xastir_snprintf(fileimg, sizeof(fileimg), "%s", tigertmp);
if (debug_level & 512) {
fprintf(stderr,"left side is %f\n", left);
fprintf(stderr,"right side is %f\n", right);
fprintf(stderr,"top is %f\n", top);
fprintf(stderr,"bottom is %f\n", bottom);
fprintf(stderr,"lat center is %f\n", lat_center);
fprintf(stderr,"long center is %f\n", long_center);
fprintf(stderr,"screen width is %li\n", screen_width);
fprintf(stderr,"screen height is %li\n", screen_height);
fprintf(stderr,"map width is %f\n", map_width);
fprintf(stderr,"map height is %f\n", map_height);
fprintf(stderr,"fileimg is %s\n", fileimg);
fprintf(stderr,"ftp or http file: %s\n", fileimg);
}
// Hopefully this will eventually allow us to get maps in the background
// while (sometimeout !=0 && local_filename[0]==NULL){
if (local_filename[0]=='\0' ){
if (debug_level & 512 ) {
fprintf(stderr,"tiger_local_file=<%s>\n",local_filename);
}
HandlePendingEvents(app_context);
if (interrupt_drawing_now) {
// Update to screen
(void)XCopyArea(XtDisplay(da),
pixmap,
XtWindow(da),
gc,
0,
0,
(unsigned int)screen_width,
(unsigned int)screen_height,
0,
0);
return;
}
get_tiger_local_file(local_filename,fileimg);
}
// whackadoodle
// Tell ImageMagick where to find it
xastir_snprintf(file,
sizeof(file),
"%s",
local_filename);
GetExceptionInfo(&exception);
image_info=CloneImageInfo((ImageInfo *) NULL);
xastir_snprintf(image_info->filename,
sizeof(image_info->filename),
"%s",
file);
if (debug_level & 512) {
fprintf(stderr,"Copied %s into image info.\n", file);
fprintf(stderr,"image_info got: %s\n", image_info->filename);
fprintf(stderr,"Entered ImageMagick code.\n");
fprintf(stderr,"Attempting to open: %s\n", image_info->filename);
}
// We do a test read first to see if the file exists, so we
// don't kill Xastir in the ReadImage routine.
f = fopen (image_info->filename, "r");
if (f == NULL) {
if (debug_level & 512)
fprintf(stderr,"File could not be read\n");
#ifdef USE_MAP_CACHE
// clear from cache if bad
if (map_cache_del(fileimg)) {
if (debug_level & 512) {
fprintf(stderr,"Couldn't delete unreadable map from cache\n");
}
}
#endif
if (image_info)
DestroyImageInfo(image_info);
DestroyExceptionInfo(&exception);
return;
}
(void)fclose (f);
image = ReadImage(image_info, &exception);
if (image == (Image *) NULL) {
MagickWarning(exception.severity, exception.reason, exception.description);
//fprintf(stderr,"MagickWarning\n");
#ifdef USE_MAP_CACHE
// clear from cache if bad
if (map_cache_del(fileimg)) {
if (debug_level & 512) {
fprintf(stderr,"Couldn't delete map from cache\n");
}
}
#endif
if (image_info)
DestroyImageInfo(image_info);
DestroyExceptionInfo(&exception);
return;
}
if (debug_level & 512)
fprintf(stderr,"Color depth is %i \n", (int)image->depth);
if (image->colorspace != RGBColorspace) {
fprintf(stderr,"TBD: I don't think we can deal with colorspace != RGB");
if (image)
DestroyImage(image);
if (image_info)
DestroyImageInfo(image_info);
DestroyExceptionInfo(&exception);
return;
}
width = image->columns;
height = image->rows;
// Code to mute the image so it's not as bright.
/* if (raster_map_intensity < 1.0) {
char tempstr[30];
if (debug_level & 512)
fprintf(stderr,"level=%s\n", tempstr);
xastir_snprintf(tempstr,
sizeof(tempstr),
"%d, 100, 100",
(int)(raster_map_intensity * 100.0));
ModulateImage(image, tempstr);
}
*/
// If were are drawing to a low bpp display (typically < 8bpp)
// try to reduce the number of colors in an image.
// This may take some time, so it would be best to do ahead of
// time if it is a static image.
#if (MagickLibVersion < 0x0540)
if (visual_type == NOT_TRUE_NOR_DIRECT && GetNumberColors(image, NULL) > 128) {
#else // MagickLib >= 540
if (visual_type == NOT_TRUE_NOR_DIRECT && GetNumberColors(image, NULL, &exception) > 128) {
#endif // MagickLib Version
if (image->storage_class == PseudoClass) {
#if (MagickLibVersion < 0x0549)
CompressColormap(image); // Remove duplicate colors
#else // MagickLib >= 0x0549
CompressImageColormap(image); // Remove duplicate colors
#endif // MagickLibVersion < 0x0549
}
// Quantize down to 128 will go here...
}
pixel_pack = GetImagePixels(image, 0, 0, image->columns, image->rows);
if (!pixel_pack) {
fprintf(stderr,"pixel_pack == NULL!!!");
if (image)
DestroyImage(image);
if (image_info)
DestroyImageInfo(image_info);
DestroyExceptionInfo(&exception);
return;
}
index_pack = GetIndexes(image);
if (image->storage_class == PseudoClass && !index_pack) {
fprintf(stderr,"PseudoClass && index_pack == NULL!!!");
if (image)
DestroyImage(image);
if (image_info)
DestroyImageInfo(image_info);
DestroyExceptionInfo(&exception);
return;
}
if (image->storage_class == PseudoClass && image->colors <= 256) {
for (l = 0; l < (int)image->colors; l++) {
// Need to check how to do this for ANY image, as ImageMagick can read in all sorts
// of image files
temp_pack = image->colormap[l];
if (debug_level & 512)
fprintf(stderr,"Colormap color is %i %i %i \n",
temp_pack.red, temp_pack.green, temp_pack.blue);
// Here's a tricky bit: PixelPacket entries are defined as Quantum's. Quantum
// is defined in /usr/include/magick/image.h as either an unsigned short or an
// unsigned char, depending on what "configure" decided when ImageMagick was installed.
// We can determine which by looking at MaxRGB or QuantumDepth.
//
if (QuantumDepth == 16) { // Defined in /usr/include/magick/image.h
if (debug_level & 512)
fprintf(stderr,"Color quantum is [0..65535]\n");
my_colors[l].red = temp_pack.red * raster_map_intensity;
my_colors[l].green = temp_pack.green * raster_map_intensity;
my_colors[l].blue = temp_pack.blue * raster_map_intensity;
}
else { // QuantumDepth = 8
if (debug_level & 512)
fprintf(stderr,"Color quantum is [0..255]\n");
my_colors[l].red = (temp_pack.red << 8) * raster_map_intensity;
my_colors[l].green = (temp_pack.green << 8) * raster_map_intensity;
my_colors[l].blue = (temp_pack.blue << 8) * raster_map_intensity;
}
// Get the color allocated on < 8bpp displays. pixel color is written to my_colors.pixel
if (visual_type == NOT_TRUE_NOR_DIRECT) {
// XFreeColors(XtDisplay(w), cmap, &(my_colors[l].pixel),1,0);
XAllocColor(XtDisplay(w), cmap, &my_colors[l]);
}
else {
pack_pixel_bits(my_colors[l].red, my_colors[l].green, my_colors[l].blue,
&my_colors[l].pixel);
}
if (debug_level & 512)
fprintf(stderr,"Color allocated is %li %i %i %i \n", my_colors[l].pixel,
my_colors[l].red, my_colors[l].blue, my_colors[l].green);
}
}
/*
* Here are the corners of our viewport, using the Xastir
* coordinate system. Notice that Y is upside down:
*
* left edge of view = NW_corner_longitude
* right edge of view = SE_corner_longitude
* top edge of view = NW_corner_latitude
* bottom edge of view = SE_corner_latitude
*
* The corners of our map will soon be (after translating the
* tiepoints to the corners if they're not already there):
*
* left edge of map = tp[0].x_long in Xastir format
* right edge of map = tp[1].x_long
* top edge of map = tp[0].y_lat
* bottom edge of map = tp[1].y_lat
*
*/
map_c_L = tp[0].x_long - NW_corner_longitude; // map left coordinate
map_c_T = tp[0].y_lat - NW_corner_latitude; // map top coordinate
tp_c_dx = (long)(tp[1].x_long - tp[0].x_long);// Width between tiepoints
tp_c_dy = (long)(tp[1].y_lat - tp[0].y_lat); // Height between tiepoints
// Check for tiepoints being in wrong relation to one another
if (tp_c_dx < 0)
tp_c_dx = -tp_c_dx; // New width between tiepoints
if (tp_c_dy < 0)
tp_c_dy = -tp_c_dy; // New height between tiepoints
// Calculate step size per pixel
map_c_dx = ((double) tp_c_dx / abs(tp[1].img_x - tp[0].img_x));
map_c_dy = ((double) tp_c_dy / abs(tp[1].img_y - tp[0].img_y));
// Scaled screen step size for use with XFillRectangle below
scr_dx = (int) (map_c_dx / scale_x) + 1;
scr_dy = (int) (map_c_dy / scale_y) + 1;
// calculate top left map corner from tiepoints
if (tp[0].img_x != 0) {
tp[0].x_long -= (tp[0].img_x * map_c_dx); // map left edge longitude
map_c_L = tp[0].x_long - NW_corner_longitude; // delta ??
tp[0].img_x = 0;
if (debug_level & 512)
fprintf(stderr,"Translated tiepoint_0 x: %d\t%lu\n", tp[0].img_x, tp[0].x_long);
}
if (tp[0].img_y != 0) {
tp[0].y_lat -= (tp[0].img_y * map_c_dy); // map top edge latitude
map_c_T = tp[0].y_lat - NW_corner_latitude;
tp[0].img_y = 0;
if (debug_level & 512)
fprintf(stderr,"Translated tiepoint_0 y: %d\t%lu\n", tp[0].img_y, tp[0].y_lat);
}
// calculate bottom right map corner from tiepoints
// map size is geo_image_width / geo_image_height
if (tp[1].img_x != (geo_image_width - 1) ) {
tp[1].img_x = geo_image_width - 1;
tp[1].x_long = tp[0].x_long + (tp[1].img_x * map_c_dx); // right
if (debug_level & 512)
fprintf(stderr,"Translated tiepoint_1 x: %d\t%lu\n", tp[1].img_x, tp[1].x_long);
}
if (tp[1].img_y != (geo_image_height - 1) ) {
tp[1].img_y = geo_image_height - 1;
tp[1].y_lat = tp[0].y_lat + (tp[1].img_y * map_c_dy); // bottom
if (debug_level & 512)
fprintf(stderr,"Translated tiepoint_1 y: %d\t%lu\n", tp[1].img_y, tp[1].y_lat);
}
if (debug_level & 512) {
fprintf(stderr,"X tiepoint width: %ld\n", tp_c_dx);
fprintf(stderr,"Y tiepoint width: %ld\n", tp_c_dy);
fprintf(stderr,"Loading imagemap: %s\n", file);
fprintf(stderr,"\nImage: %s\n", file);
fprintf(stderr,"Image size %d %d\n", geo_image_width, geo_image_height);
fprintf(stderr,"XX: %ld YY:%ld Sx %f %d Sy %f %d\n",
map_c_L, map_c_T, map_c_dx,(int) (map_c_dx / scale_x), map_c_dy, (int) (map_c_dy / scale_y));
fprintf(stderr,"Image size %d %d\n", width, height);
#if (MagickLibVersion < 0x0540)
fprintf(stderr,"Unique colors = %d\n", GetNumberColors(image, NULL));
#else // MagickLib < 540
fprintf(stderr,"Unique colors = %ld\n", GetNumberColors(image, NULL, &exception));
#endif // MagickLib < 540
fprintf(stderr,"XX: %ld YY:%ld Sx %f %d Sy %f %d\n", map_c_L, map_c_T,
map_c_dx,(int) (map_c_dx / scale_x), map_c_dy, (int) (map_c_dy / scale_y));
fprintf(stderr,"image matte is %i\n", image->matte);
} // debug_level & 512
// draw the image from the file out to the map screen
// Get the border values for the X and Y for loops used
// for the XFillRectangle call later.
map_c_yc = (tp[0].y_lat + tp[1].y_lat) / 2; // vert center of map as reference
map_y_ctr = (long)(height / 2 +0.499);
scale_x0 = get_x_scale(0,map_c_yc,scale_y); // reference scaling at vert map center
map_c_xc = (tp[0].x_long + tp[1].x_long) / 2; // hor center of map as reference
map_x_ctr = (long)(width / 2 +0.499);
scr_x_mc = (map_c_xc - NW_corner_longitude) / scale_x; // screen coordinates of map center
// calculate map pixel range in y direction that falls into screen area
c_y_max = 0ul;
map_y_min = map_y_max = 0l;
for (map_y_0 = 0, c_y = tp[0].y_lat; map_y_0 < (long)height; map_y_0++, c_y += map_c_dy) {
scr_y = (c_y - NW_corner_latitude) / scale_y; // current screen position
if (scr_y > 0) {
if (scr_y < screen_height) {
map_y_max = map_y_0; // update last map pixel in y
c_y_max = (unsigned long)c_y;// bottom map inside screen coordinate
} else
break; // done, reached bottom screen border
} else { // pixel is above screen
map_y_min = map_y_0; // update first map pixel in y
}
}
c_y_min = (unsigned long)(tp[0].y_lat + map_y_min * map_c_dy); // top map inside screen coordinate
map_x_min = map_x_max = 0l;
for (map_x = 0, c_x = tp[0].x_long; map_x < (long)width; map_x++, c_x += map_c_dx) {
scr_x = (c_x - NW_corner_longitude)/ scale_x; // current screen position
if (scr_x > 0) {
if (scr_x < screen_width)
map_x_max = map_x; // update last map pixel in x
else
break; // done, reached right screen border
} else { // pixel is left from screen
map_x_min = map_x; // update first map pixel in x
}
}
c_x_min = (unsigned long)(tp[0].x_long + map_x_min * map_c_dx); // left map inside screen coordinate
scr_yp = -1;
scr_c_xr = SE_corner_longitude;
c_dx = map_c_dx; // map pixel width
scale_xa = scale_x0; // the compiler likes it ;-)
map_done = 0;
map_act = 0;
map_seen = 0;
scr_y = screen_height - 1;
// loop over map pixel rows
for (map_y_0 = map_y_min, c_y = (double)c_y_min; (map_y_0 <= map_y_max); map_y_0++, c_y += map_c_dy) {
HandlePendingEvents(app_context);
if (interrupt_drawing_now) {
if (image)
DestroyImage(image);
if (image_info)
DestroyImageInfo(image_info);
// Update to screen
(void)XCopyArea(XtDisplay(da),
pixmap,
XtWindow(da),
gc,
0,
0,
(unsigned int)screen_width,
(unsigned int)screen_height,
0,
0);
DestroyExceptionInfo(&exception);
return;
}
scr_y = (c_y - NW_corner_latitude) / scale_y;
if (scr_y != scr_yp) { // don't do a row twice
scr_yp = scr_y; // remember as previous y
scr_xp = -1;
// loop over map pixel columns
map_act = 0;
scale_x_nm = calc_dscale_x(0,(long)c_y) / 1852.0; // nm per Xastir coordinate
for (map_x = map_x_min, c_x = (double)c_x_min; map_x <= map_x_max; map_x++, c_x += c_dx) {
scr_x = (c_x - NW_corner_longitude) / scale_x;
if (scr_x != scr_xp) { // don't do a pixel twice
scr_xp = scr_x; // remember as previous x
map_y = map_y_0;
if (map_y >= 0 && map_y <= tp[1].img_y) { // check map boundaries in y direction
map_seen = 1;
map_act = 1; // detects blank screen rows (end of map)
// now copy a pixel from the map image to the screen
l = map_x + map_y * image->columns;
if (image->storage_class == PseudoClass) {
XSetForeground(XtDisplay(w), gc, my_colors[index_pack[l]].pixel);
}
else {
// It is not safe to assume that the red/green/blue
// elements of pixel_pack of type Quantum are the
// same as the red/green/blue of an XColor!
if (QuantumDepth==16) {
my_colors[0].red=pixel_pack[l].red;
my_colors[0].green=pixel_pack[l].green;
my_colors[0].blue=pixel_pack[l].blue;
}
else { // QuantumDepth=8
// shift the bits of the 8-bit quantity so that
// they become the high bigs of my_colors.*
my_colors[0].red=pixel_pack[l].red<<8;
my_colors[0].green=pixel_pack[l].green<<8;
my_colors[0].blue=pixel_pack[l].blue<<8;
}
// NOW my_colors has the right r,g,b range for
// pack_pixel_bits
pack_pixel_bits(my_colors[0].red * raster_map_intensity,
my_colors[0].green * raster_map_intensity,
my_colors[0].blue * raster_map_intensity,
&my_colors[0].pixel);
XSetForeground(XtDisplay(w), gc, my_colors[0].pixel);
}
(void)XFillRectangle (XtDisplay (w),pixmap,gc,scr_x,scr_y,scr_dx,scr_dy);
} // check map boundaries in y direction
}
} // loop over map pixel columns
if (map_seen && !map_act)
map_done = 1;
}
} // loop over map pixel rows
if (image)
DestroyImage(image);
if (image_info)
DestroyImageInfo(image_info);
DestroyExceptionInfo(&exception);
}
void draw_WMS_map (Widget w,
char *filenm,
int destination_pixmap,
char *URL,
transparent_color_record *c_trans_color_head,
int nocache) { // If non-zero, don't use cached version
char file[MAX_FILENAME]; // Complete path/name of image file
char short_filenm[MAX_FILENAME];
FILE *f; // Filehandle of image file
char fileimg[MAX_FILENAME]; // Ascii name of image file, read from GEO file
char WMStmp[MAX_FILENAME*2]; // Used for putting together the WMS map query
int width, height;
tiepoint tp[2]; // Calibration points for map, read in from .geo file
register long map_c_T, map_c_L; // map delta NW edge coordinates, DNN: these should be signed
register long tp_c_dx, tp_c_dy; // tiepoint coordinate differences
unsigned long c_x_min, c_y_min;// top left coordinates of map inside screen
unsigned long c_y_max; // bottom right coordinates of map inside screen
double c_x; // Xastir coordinates 1/100 sec, 0 = 180°W
double c_y; // Xastir coordinates 1/100 sec, 0 = 90°N
long map_y_0; // map pixel pointer prior to TM adjustment
register long map_x, map_y; // map pixel pointers, DNN: this was a float, chg to long
long map_x_min, map_x_max; // map boundaries for in screen part of map
long map_y_min, map_y_max; //
long map_x_ctr; // half map width in pixel
long map_y_ctr; // half map height in pixel
int map_seen = 0;
int map_act;
int map_done;
long map_c_yc; // map center, vert coordinate
long map_c_xc; // map center, hor coordinate
double map_c_dx, map_c_dy; // map coordinates increment (pixel width)
double c_dx; // adjusted map pixel width
long scr_x, scr_y; // screen pixel plot positions
long scr_xp, scr_yp; // previous screen plot positions
int scr_dx, scr_dy; // increments in screen plot positions
long scr_x_mc; // map center in screen units
long scr_c_xr;
long scale_xa; // adjusted for topo maps
double scale_x_nm; // nm per Xastir coordinate unit
long scale_x0; // at widest map area
char local_filename[MAX_FILENAME];
ExceptionInfo exception;
Image *image;
ImageInfo *image_info;
PixelPacket *pixel_pack;
PixelPacket temp_pack;
IndexPacket *index_pack;
int l;
XColor my_colors[256];
int trans_skip = 0; // skip transparent pixel
double left, right, top, bottom, map_width, map_height;
double lat_center = 0;
double long_center = 0;
char map_it[MAX_FILENAME];
char tmpstr[100];
int geo_image_width; // Image width from GEO file
int geo_image_height; // Image height from GEO file
time_t query_start_time, query_end_time;
#ifdef USE_MAP_CACHE
int map_cache_return;
char * cache_file_id;
#endif // USE_MAP_CACHE
char temp_file_path[MAX_VALUE];
if (debug_level & 512) {
if (nocache)
fprintf(stderr,"draw_WMS_map: NOCACHE selected\n");
else
fprintf(stderr,"draw_WMS_map: CACHING if enabled\n");
}
// Create a shorter filename for display (one that fits the
// status line more closely). Subtract the length of the
// "Indexing " and/or "Loading " strings as well.
if (strlen(filenm) > (41 - 9)) {
int avail = 41 - 11;
int new_len = strlen(filenm) - avail;
xastir_snprintf(short_filenm,
sizeof(short_filenm),
"..%s",
&filenm[new_len]);
}
else {
xastir_snprintf(short_filenm,
sizeof(short_filenm),
"%s",
filenm);
}
xastir_snprintf(map_it,
sizeof(map_it),
langcode ("BBARSTA028"),
short_filenm);
statusline(map_it,0); // Loading ...
// Check whether we're indexing or drawing the map
if ( (destination_pixmap == INDEX_CHECK_TIMESTAMPS)
|| (destination_pixmap == INDEX_NO_TIMESTAMPS) ) {
// We're indexing only. Save the extents in the index.
// Force the extents to the edges of the earth for the
// index file.
index_update_xastir(filenm, // Filename only
64800000l, // Bottom
0l, // Top
0l, // Left
129600000l, // Right
0); // Default Map Level
// Update statusline
xastir_snprintf(map_it,
sizeof(map_it),
langcode ("BBARSTA039"),
short_filenm);
statusline(map_it,0); // Loading/Indexing ...
return; // Done indexing this file
}
// Tiepoint for upper left screen corner
//
tp[0].img_x = 0; // Pixel Coordinates
tp[0].img_y = 0; // Pixel Coordinates
tp[0].x_long = NW_corner_longitude; // Xastir Coordinates
tp[0].y_lat = NW_corner_latitude; // Xastir Coordinates
// Tiepoint for lower right screen corner
//
// Here we must use scale_x for both directions because we have
// square pixels returned by the WMS server.
// Really what we want to do here is to change our bounding box for
// our request to fit square pixels, using scale_x for both
// dimensions, and to change our tiepoints to match. WMS servers
// currently feed us back square pixels but the spec says that the
// servers should be capable of sending back rectangular pixels, so
// the images we get back may change if we don't request square
// pixels each time.
//
// TODO: Change our imagesize, bounding rectangle requested, and
// tiepoints to fit square pixels and to use scale_x for both
// dimensions.
//
// Actually, looking at the changes that were made, it looks like we
// _are_ using square pixels and requesting a bounding box based on
// scale_x for both dimensions, so we might be good to go as-is.
//
tp[1].img_x = screen_width - 1; // Pixel Coordinates
tp[1].img_y = screen_height - 1; // Pixel Coordinates
tp[1].x_long = SE_corner_longitude; // Xastir Coordinates
// Modified to use same scale (scale_x) for both dimensions, square
// pixels. Don't use SE_corner_latitude here as it uses scale_y!
// tp[1].y_lat = NW_corner_latitude + ((screen_height) * scale_y); // Xastir Coordinates
tp[1].y_lat = NW_corner_latitude + ((screen_height) * scale_x); // Xastir Coordinates
// Again, use scale_x for both directions due to the square
// pixels returned from the WMS server.
//
left = (double)((NW_corner_longitude - 64800000l )/360000.0); // Lat/long Coordinates
top = (double)(-((NW_corner_latitude - 32400000l )/360000.0)); // Lat/long Coordinates
right = (double)((SE_corner_longitude - 64800000l)/360000.0);//Lat/long Coordinates
// Modified to use same scale (scale_x) for both dimensions, square
// pixels. Don't use SE_corner_latitude here as it uses scale_y!
// bottom = (double)(-(((NW_corner_latitude + ((screen_height) * scale_y) ) - 32400000l)/360000.0));//Lat/long Coordinates
bottom = (double)(-(((NW_corner_latitude + ((screen_height) * scale_x) ) - 32400000l)/360000.0));//Lat/long Coordinates
map_width = right - left; // Lat/long Coordinates
map_height = top - bottom; // Lat/long Coordinates
geo_image_width = screen_width;
geo_image_height = screen_height;
long_center = (left + right)/2.0l;
lat_center = (top + bottom)/2.0l;
// Example query for a WMS map server....
// xastir_snprintf(fileimg, sizeof(fileimg),
// "\'http://mesonet.tamu.edu/cgi-bin/p-warn?SERVICE=WMS&VERSION=1.1.1&REQUEST=getmap&layers=radar&BBOX=-129.000,52.500,-111.000,42.500&HEIGHT=1000&WIDTH=1800&FORMAT=image/png\'");
// xastir_snprintf(WMStmp, sizeof(WMStmp),
// "http://mesonet.tamu.edu/cgi-bin/p-warn?SERVICE=WMS&VERSION=1.1.1&REQUEST=getmap");
xastir_snprintf(WMStmp, sizeof(WMStmp), "%s", URL);
strncat(WMStmp, "&REQUEST=getmap", sizeof(WMStmp) - 1 - strlen(WMStmp));
strncat(WMStmp, "&EXCEPTIONS=INIMAGE", sizeof(WMStmp) - 1 - strlen(WMStmp));
// This specifies a bounding box based on square pixels.
xastir_snprintf(tmpstr, sizeof(tmpstr),
"&BBOX=%8.5f,%7.5f,%8.5f,%7.5f",
left, // Lower left
bottom, // Lower left
right, // Upper right
top); // Upper right
strncat (WMStmp, tmpstr, sizeof(WMStmp) - 1 - strlen(WMStmp));
xastir_snprintf(tmpstr, sizeof(tmpstr), "&HEIGHT=%d", geo_image_height);
strncat (WMStmp, tmpstr, sizeof(WMStmp) - 1 - strlen(WMStmp));
xastir_snprintf(tmpstr, sizeof(tmpstr), "&WIDTH=%d", geo_image_width);
strncat (WMStmp, tmpstr, sizeof(WMStmp) - 1 - strlen(WMStmp));
// These should be specified in the .geo file instead of hard-coded:
//
// strncat(WMStmp, "&VERSION=1.0.0", sizeof(WMStmp) - 1 - strlen(WMStmp));
// strncat(WMStmp, "&FORMAT=image/png", sizeof(WMStmp) - 1 - strlen(WMStmp));
// strncat(WMStmp, "&TRANSPARENT=TRUE", sizeof(WMStmp) - 1 - strlen(WMStmp));
// strncat(WMStmp, "&BGCOLOR=0xffffff", sizeof(WMStmp) - 1 - strlen(WMStmp));
// strncat(WMStmp, "&BGCOLOR=0x000000", sizeof(WMStmp) - 1 - strlen(WMStmp));
// strncat(WMStmp, "&CRS=CRS:84", sizeof(WMStmp) - 1 - strlen(WMStmp));
/*
xastir_snprintf(WMStmp, sizeof(WMStmp), "http://tiger.census.gov/cgi-bin/mapper/map.png?");
if (tiger_show_grid)
strncat(WMStmp, "&on=GRID", sizeof(WMStmp) - 1 - strlen(WMStmp));
else
strncat(WMStmp, "&off=GRID", sizeof(WMStmp) - 1 - strlen(WMStmp));
if (tiger_show_counties)
strncat(WMStmp, "&on=counties", sizeof(WMStmp) - 1 - strlen(WMStmp));
else
strncat(WMStmp, "&off=counties", sizeof(WMStmp) - 1 - strlen(WMStmp));
if (tiger_show_cities)
strncat(WMStmp, "&on=CITIES", sizeof(WMStmp) - 1 - strlen(WMStmp));
else
strncat(WMStmp, "&off=CITIES", sizeof(WMStmp) - 1 - strlen(WMStmp));
if (tiger_show_places)
strncat(WMStmp, "&on=places", sizeof(WMStmp) - 1 - strlen(WMStmp));
else
strncat(WMStmp, "&off=places", sizeof(WMStmp) - 1 - strlen(WMStmp));
if (tiger_show_majroads)
strncat(WMStmp, "&on=majroads", sizeof(WMStmp) - 1 - strlen(WMStmp));
else
strncat(WMStmp, "&off=majroads", sizeof(WMStmp) - 1 - strlen(WMStmp));
if (tiger_show_streets)
strncat(WMStmp, "&on=streets", sizeof(WMStmp) - 1 - strlen(WMStmp));
// Don't turn streets off since this will automagically show up as you zoom in.
if (tiger_show_railroad)
strncat(WMStmp, "&on=railroad", sizeof(WMStmp) - 1 - strlen(WMStmp));
else
strncat(WMStmp, "&off=railroad", sizeof(WMStmp) - 1 - strlen(WMStmp));
if (tiger_show_states)
strncat(WMStmp, "&on=states", sizeof(WMStmp) - 1 - strlen(WMStmp));
else
strncat(WMStmp, "&off=states", sizeof(WMStmp) - 1 - strlen(WMStmp));
if (tiger_show_interstate)
strncat(WMStmp, "&on=interstate", sizeof(WMStmp) - 1 - strlen(WMStmp));
else
strncat(WMStmp, "&off=interstate", sizeof(WMStmp) - 1 - strlen(WMStmp));
if (tiger_show_ushwy)
strncat(WMStmp, "&on=ushwy", sizeof(WMStmp) - 1 - strlen(WMStmp));
else
strncat(WMStmp, "&off=ushwy", sizeof(WMStmp) - 1 - strlen(WMStmp));
if (tiger_show_statehwy)
strncat(WMStmp, "&on=statehwy", sizeof(WMStmp) - 1 - strlen(WMStmp));
else
strncat(WMStmp, "&off=statehwy", sizeof(WMStmp) - 1 - strlen(WMStmp));
if (tiger_show_water)
strncat(WMStmp, "&on=water", sizeof(WMStmp) - 1 - strlen(WMStmp));
else
strncat(WMStmp, "&off=water", sizeof(WMStmp) - 1 - strlen(WMStmp));
if (tiger_show_lakes)
strncat(WMStmp, "&on=shorelin", sizeof(WMStmp) - 1 - strlen(WMStmp));
else
strncat(WMStmp, "&off=shorelin", sizeof(WMStmp) - 1 - strlen(WMStmp));
if (tiger_show_misc)
strncat(WMStmp, "&on=miscell", sizeof(WMStmp) - 1 - strlen(WMStmp));
else
strncat(WMStmp, "&off=miscell", sizeof(WMStmp) - 1 - strlen(WMStmp));
xastir_snprintf(tmpstr, sizeof(tmpstr), "&lat=%f\046lon=%f\046", lat_center, long_center);
strncat (WMStmp, tmpstr, sizeof(WMStmp) - 1 - strlen(WMStmp));
xastir_snprintf(tmpstr, sizeof(tmpstr), "wid=%f\046ht=%f\046", map_width, map_height);
strncat (WMStmp, tmpstr, sizeof(WMStmp) - 1 - strlen(WMStmp));
xastir_snprintf(tmpstr, sizeof(tmpstr), "iwd=%i\046iht=%i", tp[1].img_x + 1, tp[1].img_y + 1);
strncat (WMStmp, tmpstr, sizeof(WMStmp) - 1 - strlen(WMStmp)); */
xastir_snprintf(fileimg, sizeof(fileimg), "%s", WMStmp);
if (debug_level & 512) {
fprintf(stderr,"left side is %f\n", left);
fprintf(stderr,"right side is %f\n", right);
fprintf(stderr,"top is %f\n", top);
fprintf(stderr,"bottom is %f\n", bottom);
fprintf(stderr,"lat center is %f\n", lat_center);
fprintf(stderr,"long center is %f\n", long_center);
fprintf(stderr,"screen width is %li\n", screen_width);
fprintf(stderr,"screen height is %li\n", screen_height);
fprintf(stderr,"map width is %f\n", map_width);
fprintf(stderr,"map height is %f\n", map_height);
fprintf(stderr,"fileimg is %s\n", fileimg);
fprintf(stderr,"ftp or http file: %s\n", fileimg);
}
if (debug_level & 512) {
query_start_time=time(&query_start_time);
}
#ifdef USE_MAP_CACHE
if (nocache || map_cache_fetch_disable) {
// Delete old copy from the cache
if (map_cache_fetch_disable && fileimg[0] != '\0') {
if (map_cache_del(fileimg)) {
if (debug_level & 512) {
fprintf(stderr,"Couldn't delete old map from cache\n");
}
}
}
// Simulate a cache miss
map_cache_return = 1;
}
else {
// Else look for the file in the cache
map_cache_return = map_cache_get(fileimg,local_filename);
}
if (debug_level & 512) {
fprintf(stderr,"map_cache_return: %d\n", map_cache_return);
}
// Don't use cached version if "nocache" is non-zero
//
if (nocache || map_cache_return != 0 ) {
// Caching has not been requested or cached file not found.
// We must snag the remote file via libcurl or wget.
if (nocache) {
xastir_snprintf(local_filename,
sizeof(local_filename),
"%s/map.%s",
get_user_base_dir("tmp", temp_file_path, sizeof(temp_file_path)),
"png");
}
else {
cache_file_id = map_cache_fileid();
xastir_snprintf(local_filename,
sizeof(local_filename),
"%s/map_%s.%s",
get_user_base_dir("map_cache", temp_file_path, sizeof(temp_file_path)),
cache_file_id,
"png");
free(cache_file_id);
}
#else // USE_MAP_CACHE
xastir_snprintf(local_filename,
sizeof(local_filename),
"%s/map.%s",
get_user_base_dir("tmp", temp_file_path, sizeof(temp_file_path)),
"png");
#endif // USE_MAP_CACHE
// Erase any previously existing local file by the same name.
// This avoids the problem of having an old map image here and
// the code trying to display it when the download fails.
unlink( local_filename );
HandlePendingEvents(app_context);
if (interrupt_drawing_now) {
// Update to screen
(void)XCopyArea(XtDisplay(da),
pixmap,
XtWindow(da),
gc,
0,
0,
(unsigned int)screen_width,
(unsigned int)screen_height,
0,
0);
return;
}
if (fetch_remote_file(fileimg, local_filename)) {
// Had trouble getting the file. Abort.
return;
}
// For debugging the MagickError/MagickWarning segfaults.
//system("cat /dev/null >/var/tmp/xastir_hacker_map.png");
#ifdef USE_MAP_CACHE
// Cache this map only if nocache is zero
if (!nocache) {
map_cache_put(fileimg,local_filename);
}
} // end if is cached DHBROWN
#endif // USE_MAP_CACHE
if (debug_level & 512) {
fprintf (stderr, "Fetch or query took %d seconds\n",
(int) (time(&query_end_time) - query_start_time));
}
// Set permissions on the file so that any user can overwrite it.
chmod(local_filename, 0666);
// Tell ImageMagick where to find it
xastir_snprintf(file,
sizeof(file),
"%s",
local_filename);
GetExceptionInfo(&exception);
image_info=CloneImageInfo((ImageInfo *) NULL);
xastir_snprintf(image_info->filename,
sizeof(image_info->filename),
"%s",
file);
if (debug_level & 512) {
fprintf(stderr,"Copied %s into image info.\n", file);
fprintf(stderr,"image_info got: %s\n", image_info->filename);
fprintf(stderr,"Entered ImageMagick code.\n");
fprintf(stderr,"Attempting to open: %s\n", image_info->filename);
}
// We do a test read first to see if the file exists, so we
// don't kill Xastir in the ReadImage routine.
f = fopen (image_info->filename, "r");
if (f == NULL) {
if (debug_level & 512)
fprintf(stderr,"File could not be read\n");
#ifdef USE_MAP_CACHE
// clear from cache if bad
if (map_cache_del(fileimg)) {
if (debug_level & 512) {
fprintf(stderr,"Couldn't delete map from cache\n");
}
}
#endif
if (image_info)
DestroyImageInfo(image_info);
DestroyExceptionInfo(&exception);
return;
}
(void)fclose (f);
image = ReadImage(image_info, &exception);
if (image == (Image *) NULL) {
MagickWarning(exception.severity, exception.reason, exception.description);
//fprintf(stderr,"MagickWarning\n");
#ifdef USE_MAP_CACHE
// clear from cache if bad
if (map_cache_del(fileimg)) {
if (debug_level & 512) {
fprintf(stderr,"Couldn't delete map from cache\n");
}
}
#endif
if (image_info)
DestroyImageInfo(image_info);
DestroyExceptionInfo(&exception);
return;
}
if (debug_level & 512)
fprintf(stderr,"Color depth is %i \n", (int)image->depth);
/*
if (image->colorspace != RGBColorspace) {
fprintf(stderr,"TBD: I don't think we can deal with colorspace != RGB");
if (image)
DestroyImage(image);
if (image_info)
DestroyImageInfo(image_info);
DestroyExceptionInfo(&exception);
return;
}
*/
width = image->columns;
height = image->rows;
// Code to mute the image so it's not as bright.
/* if (raster_map_intensity < 1.0) {
char tempstr[30];
if (debug_level & 512)
fprintf(stderr,"level=%s\n", tempstr);
xastir_snprintf(tempstr,
sizeof(tempstr),
"%d, 100, 100",
(int)(raster_map_intensity * 100.0));
ModulateImage(image, tempstr);
}
*/
// If were are drawing to a low bpp display (typically < 8bpp)
// try to reduce the number of colors in an image.
// This may take some time, so it would be best to do ahead of
// time if it is a static image.
#if (MagickLibVersion < 0x0540)
if (visual_type == NOT_TRUE_NOR_DIRECT && GetNumberColors(image, NULL) > 128) {
#else // MagickLib >= 540
if (visual_type == NOT_TRUE_NOR_DIRECT && GetNumberColors(image, NULL, &exception) > 128) {
#endif // MagickLib Version
if (image->storage_class == PseudoClass) {
#if (MagickLibVersion < 0x0549)
CompressColormap(image); // Remove duplicate colors
#else // MagickLib >= 0x0549
CompressImageColormap(image); // Remove duplicate colors
#endif // MagickLibVersion < 0x0549
}
// Quantize down to 128 will go here...
}
pixel_pack = GetImagePixels(image, 0, 0, image->columns, image->rows);
if (!pixel_pack) {
fprintf(stderr,"pixel_pack == NULL!!!");
if (image)
DestroyImage(image);
if (image_info)
DestroyImageInfo(image_info);
DestroyExceptionInfo(&exception);
return;
}
index_pack = GetIndexes(image);
if (image->storage_class == PseudoClass && !index_pack) {
fprintf(stderr,"PseudoClass && index_pack == NULL!!!");
if (image)
DestroyImage(image);
if (image_info)
DestroyImageInfo(image_info);
DestroyExceptionInfo(&exception);
return;
}
if (image->storage_class == PseudoClass && image->colors <= 256) {
for (l = 0; l < (int)image->colors; l++) {
// Need to check how to do this for ANY image, as ImageMagick can read in all sorts
// of image files
temp_pack = image->colormap[l];
if (debug_level & 512)
fprintf(stderr,"Colormap color is %i %i %i \n",
temp_pack.red, temp_pack.green, temp_pack.blue);
// Here's a tricky bit: PixelPacket entries are defined as Quantum's. Quantum
// is defined in /usr/include/magick/image.h as either an unsigned short or an
// unsigned char, depending on what "configure" decided when ImageMagick was installed.
// We can determine which by looking at MaxRGB or QuantumDepth.
//
if (QuantumDepth == 16) { // Defined in /usr/include/magick/image.h
if (debug_level & 512)
fprintf(stderr,"Color quantum is [0..65535]\n");
my_colors[l].red = temp_pack.red * raster_map_intensity;
my_colors[l].green = temp_pack.green * raster_map_intensity;
my_colors[l].blue = temp_pack.blue * raster_map_intensity;
}
else { // QuantumDepth = 8
if (debug_level & 512)
fprintf(stderr,"Color quantum is [0..255]\n");
my_colors[l].red = (temp_pack.red << 8) * raster_map_intensity;
my_colors[l].green = (temp_pack.green << 8) * raster_map_intensity;
my_colors[l].blue = (temp_pack.blue << 8) * raster_map_intensity;
}
// Get the color allocated on < 8bpp displays. pixel color is written to my_colors.pixel
if (visual_type == NOT_TRUE_NOR_DIRECT) {
// XFreeColors(XtDisplay(w), cmap, &(my_colors[l].pixel),1,0);
XAllocColor(XtDisplay(w), cmap, &my_colors[l]);
}
else {
pack_pixel_bits(my_colors[l].red, my_colors[l].green, my_colors[l].blue,
&my_colors[l].pixel);
}
if (debug_level & 512)
fprintf(stderr,"Color allocated is %li %i %i %i \n", my_colors[l].pixel,
my_colors[l].red, my_colors[l].blue, my_colors[l].green);
}
}
/*
* Here are the corners of our viewport, using the Xastir
* coordinate system. Notice that Y is upside down:
*
* left edge of view = NW_corner_longitude
* right edge of view = SE_corner_longitude
* top edge of view = NW_corner_latitude
* bottom edge of view = SE_corner_latitude
*
* The corners of our map will soon be (after translating the
* tiepoints to the corners if they're not already there):
*
* left edge of map = tp[0].x_long in Xastir format
* right edge of map = tp[1].x_long
* top edge of map = tp[0].y_lat
* bottom edge of map = tp[1].y_lat
*
*/
map_c_L = tp[0].x_long - NW_corner_longitude; // map left coordinate
map_c_T = tp[0].y_lat - NW_corner_latitude; // map top coordinate
tp_c_dx = (long)(tp[1].x_long - tp[0].x_long);// Width between tiepoints
tp_c_dy = (long)(tp[1].y_lat - tp[0].y_lat); // Height between tiepoints
// Check for tiepoints being in wrong relation to one another
if (tp_c_dx < 0)
tp_c_dx = -tp_c_dx; // New width between tiepoints
if (tp_c_dy < 0)
tp_c_dy = -tp_c_dy; // New height between tiepoints
// Calculate step size per pixel
map_c_dx = ((double) tp_c_dx / abs(tp[1].img_x - tp[0].img_x));
map_c_dy = ((double) tp_c_dy / abs(tp[1].img_y - tp[0].img_y));
// Scaled screen step size for use with XFillRectangle below
scr_dx = (int) (map_c_dx / scale_x) + 1;
scr_dy = (int) (map_c_dy / scale_y) + 1;
// calculate top left map corner from tiepoints
if (tp[0].img_x != 0) {
tp[0].x_long -= (tp[0].img_x * map_c_dx); // map left edge longitude
map_c_L = tp[0].x_long - NW_corner_longitude; // delta ??
tp[0].img_x = 0;
if (debug_level & 512)
fprintf(stderr,"Translated tiepoint_0 x: %d\t%lu\n", tp[0].img_x, tp[0].x_long);
}
if (tp[0].img_y != 0) {
tp[0].y_lat -= (tp[0].img_y * map_c_dy); // map top edge latitude
map_c_T = tp[0].y_lat - NW_corner_latitude;
tp[0].img_y = 0;
if (debug_level & 512)
fprintf(stderr,"Translated tiepoint_0 y: %d\t%lu\n", tp[0].img_y, tp[0].y_lat);
}
// calculate bottom right map corner from tiepoints
// map size is geo_image_width / geo_image_height
if (tp[1].img_x != (geo_image_width - 1) ) {
tp[1].img_x = geo_image_width - 1;
tp[1].x_long = tp[0].x_long + (tp[1].img_x * map_c_dx); // right
if (debug_level & 512)
fprintf(stderr,"Translated tiepoint_1 x: %d\t%lu\n", tp[1].img_x, tp[1].x_long);
}
if (tp[1].img_y != (geo_image_height - 1) ) {
tp[1].img_y = geo_image_height - 1;
tp[1].y_lat = tp[0].y_lat + (tp[1].img_y * map_c_dy); // bottom
if (debug_level & 512)
fprintf(stderr,"Translated tiepoint_1 y: %d\t%lu\n", tp[1].img_y, tp[1].y_lat);
}
if (debug_level & 512) {
fprintf(stderr,"X tiepoint width: %ld\n", tp_c_dx);
fprintf(stderr,"Y tiepoint width: %ld\n", tp_c_dy);
fprintf(stderr,"Loading imagemap: %s\n", file);
fprintf(stderr,"\nImage: %s\n", file);
fprintf(stderr,"Image size %d %d\n", geo_image_width, geo_image_height);
fprintf(stderr,"XX: %ld YY:%ld Sx %f %d Sy %f %d\n",
map_c_L, map_c_T, map_c_dx,(int) (map_c_dx / scale_x), map_c_dy, (int) (map_c_dy / scale_y));
fprintf(stderr,"Image size %d %d\n", width, height);
#if (MagickLibVersion < 0x0540)
fprintf(stderr,"Unique colors = %d\n", GetNumberColors(image, NULL));
#else // MagickLib < 540
fprintf(stderr,"Unique colors = %ld\n", GetNumberColors(image, NULL, &exception));
#endif // MagickLib < 540
fprintf(stderr,"XX: %ld YY:%ld Sx %f %d Sy %f %d\n", map_c_L, map_c_T,
map_c_dx,(int) (map_c_dx / scale_x), map_c_dy, (int) (map_c_dy / scale_y));
fprintf(stderr,"image matte is %i\n", image->matte);
} // debug_level & 512
// draw the image from the file out to the map screen
// Get the border values for the X and Y for loops used
// for the XFillRectangle call later.
map_c_yc = (tp[0].y_lat + tp[1].y_lat) / 2; // vert center of map as reference
map_y_ctr = (long)(height / 2 +0.499);
scale_x0 = get_x_scale(0,map_c_yc,scale_y); // reference scaling at vert map center
map_c_xc = (tp[0].x_long + tp[1].x_long) / 2; // hor center of map as reference
map_x_ctr = (long)(width / 2 +0.499);
scr_x_mc = (map_c_xc - NW_corner_longitude) / scale_x; // screen coordinates of map center
// calculate map pixel range in y direction that falls into screen area
c_y_max = 0ul;
map_y_min = map_y_max = 0l;
for (map_y_0 = 0, c_y = tp[0].y_lat; map_y_0 < (long)height; map_y_0++, c_y += map_c_dy) {
scr_y = (c_y - NW_corner_latitude) / scale_y; // current screen position
if (scr_y > 0) {
if (scr_y < screen_height) {
map_y_max = map_y_0; // update last map pixel in y
c_y_max = (unsigned long)c_y;// bottom map inside screen coordinate
} else
break; // done, reached bottom screen border
} else { // pixel is above screen
map_y_min = map_y_0; // update first map pixel in y
}
}
c_y_min = (unsigned long)(tp[0].y_lat + map_y_min * map_c_dy); // top map inside screen coordinate
map_x_min = map_x_max = 0l;
for (map_x = 0, c_x = tp[0].x_long; map_x < (long)width; map_x++, c_x += map_c_dx) {
scr_x = (c_x - NW_corner_longitude)/ scale_x; // current screen position
if (scr_x > 0) {
if (scr_x < screen_width)
map_x_max = map_x; // update last map pixel in x
else
break; // done, reached right screen border
} else { // pixel is left from screen
map_x_min = map_x; // update first map pixel in x
}
}
c_x_min = (unsigned long)(tp[0].x_long + map_x_min * map_c_dx); // left map inside screen coordinate
scr_yp = -1;
scr_c_xr = SE_corner_longitude;
c_dx = map_c_dx; // map pixel width
scale_xa = scale_x0; // the compiler likes it ;-)
map_done = 0;
map_act = 0;
map_seen = 0;
scr_y = screen_height - 1;
// loop over map pixel rows
for (map_y_0 = map_y_min, c_y = (double)c_y_min; (map_y_0 <= map_y_max); map_y_0++, c_y += map_c_dy) {
HandlePendingEvents(app_context);
if (interrupt_drawing_now) {
if (image)
DestroyImage(image);
if (image_info)
DestroyImageInfo(image_info);
// Update to screen
(void)XCopyArea(XtDisplay(da),
pixmap,
XtWindow(da),
gc,
0,
0,
(unsigned int)screen_width,
(unsigned int)screen_height,
0,
0);
return;
}
scr_y = (c_y - NW_corner_latitude) / scale_y;
if (scr_y != scr_yp) { // don't do a row twice
scr_yp = scr_y; // remember as previous y
scr_xp = -1;
// loop over map pixel columns
map_act = 0;
scale_x_nm = calc_dscale_x(0,(long)c_y) / 1852.0; // nm per Xastir coordinate
for (map_x = map_x_min, c_x = (double)c_x_min; map_x <= map_x_max; map_x++, c_x += c_dx) {
scr_x = (c_x - NW_corner_longitude) / scale_x;
if (scr_x != scr_xp) { // don't do a pixel twice
scr_xp = scr_x; // remember as previous x
map_y = map_y_0;
if (map_y >= 0 && map_y <= tp[1].img_y) { // check map boundaries in y direction
map_seen = 1;
map_act = 1; // detects blank screen rows (end of map)
// now copy a pixel from the map image to the screen
l = map_x + map_y * image->columns;
trans_skip = 1; // possibly transparent
if (image->storage_class == PseudoClass) {
if ( c_trans_color_head &&
check_trans(my_colors[index_pack[l]],c_trans_color_head)) {
trans_skip = 1; // skip it
}
else {
XSetForeground(XtDisplay(w), gc, my_colors[index_pack[l]].pixel);
trans_skip = 0; // draw it
}
}
else {
// It is not safe to assume that the red/green/blue
// elements of pixel_pack of type Quantum are the
// same as the red/green/blue of an XColor!
if (QuantumDepth==16) {
my_colors[0].red=pixel_pack[l].red;
my_colors[0].green=pixel_pack[l].green;
my_colors[0].blue=pixel_pack[l].blue;
}
else { // QuantumDepth=8
// shift the bits of the 8-bit quantity so that
// they become the high bigs of my_colors.*
my_colors[0].red=pixel_pack[l].red<<8;
my_colors[0].green=pixel_pack[l].green<<8;
my_colors[0].blue=pixel_pack[l].blue<<8;
}
// NOW my_colors has the right r,g,b range for
// pack_pixel_bits
pack_pixel_bits(my_colors[0].red * raster_map_intensity,
my_colors[0].green * raster_map_intensity,
my_colors[0].blue * raster_map_intensity,
&my_colors[0].pixel);
if ( c_trans_color_head &&
check_trans(my_colors[0],c_trans_color_head)) {
trans_skip = 1; // skip it
}
else {
XSetForeground(XtDisplay(w), gc, my_colors[0].pixel);
trans_skip = 0; // draw it
}
}
// Skip drawing if a transparent pixel
if (!trans_skip) {
(void)XFillRectangle (XtDisplay (w),pixmap,gc,scr_x,scr_y,scr_dx,scr_dy);
}
} // check map boundaries in y direction
}
} // loop over map pixel columns
if (map_seen && !map_act)
map_done = 1;
}
} // loop over map pixel rows
if (image)
DestroyImage(image);
if (image_info)
DestroyImageInfo(image_info);
DestroyExceptionInfo(&exception);
}