--- /dev/null
+/*****************************************************************************
+** This is part of the CTSim program
+** Copyright (C) 1983-2000 Kevin Rosenberg
+**
+** $Id: if2img.cpp,v 1.1 2000/06/07 07:55:30 kevin Exp $
+** $Log: if2img.cpp,v $
+** Revision 1.1 2000/06/07 07:55:30 kevin
+** Initial import
+**
+** Revision 1.1 2000/06/07 02:29:05 kevin
+** Initial C++ versions
+**
+** Revision 1.6 2000/06/03 07:57:51 kevin
+** Fixed PNG 16-bit format
+**
+** Revision 1.5 2000/06/03 06:29:57 kevin
+** *** empty log message ***
+**
+** Revision 1.4 2000/05/24 22:50:04 kevin
+** Added support for new SGP library
+**
+** Revision 1.3 2000/05/16 04:33:59 kevin
+** Improved option processing
+**
+** Revision 1.2 2000/05/08 20:02:32 kevin
+** ANSI C changes
+**
+** Revision 1.1.1.1 2000/04/28 13:02:44 kevin
+** Initial CVS import for first public release
+**
+**
+**
+** This program is free software; you can redistribute it and/or modify
+** it under the terms of the GNU General Public License (version 2) as
+** published by the Free Software Foundation.
+**
+** This program is distributed in the hope that it will be useful,
+** but WITHOUT ANY WARRANTY; without even the implied warranty of
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+** GNU General Public License for more details.
+**
+** You should have received a copy of the GNU General Public License
+** along with this program; if not, write to the Free Software
+** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+******************************************************************************/
+
+/* FILE
+ * if2img.c Convert an SDF file to a viewable format image
+ */
+
+#include "ct.h"
+
+#if HAVE_PNG
+void sdf2d_to_png (ImageFile& im, char *outfile, int bitdepth, int nxcell, int nycell, double densmin, double densmax);
+#endif
+#if HAVE_GIF
+void sdf2d_to_gif (ImageFile& im, char *outfile, int nxcell, int nycell, double densmin, double densmax);
+#endif
+void sdf2d_to_pgm (ImageFile& im, char *outfile, int nxcell, int nycell, double densmin, double densmax);
+void sdf2d_to_pgmasc (ImageFile& im, char *outfile, int nxcell, int nycell, double densmin, double densmax);
+
+enum { O_SCALE, O_MIN, O_MAX, O_AUTO, O_CENTER, O_STATS, O_FORMAT, O_LABELS,
+ O_HELP, O_VERBOSE, O_VERSION, O_DEBUG };
+
+static struct option my_options[] =
+{
+ {"scale", 1, 0, O_SCALE},
+ {"min", 1, 0, O_MIN},
+ {"max", 1, 0, O_MAX},
+ {"auto", 1, 0, O_AUTO},
+ {"center", 1, 0, O_CENTER},
+ {"format", 1, 0, O_FORMAT},
+ {"labels", 0, 0, O_LABELS},
+ {"stats", 0, 0, O_STATS},
+ {"verbose", 0, 0, O_VERBOSE},
+ {"debug", 0, 0, O_DEBUG},
+ {"help", 0, 0, O_HELP},
+ {"version", 0, 0, O_VERSION},
+ {0, 0, 0, 0}
+};
+
+enum { O_AUTO_FULL, O_AUTO_STD0_1, O_AUTO_STD0_5, O_AUTO_STD1, O_AUTO_STD2, O_AUTO_STD3 };
+#define O_AUTO_FULL_STR "full"
+#define O_AUTO_STD0_1_STR "std0.1"
+#define O_AUTO_STD0_5_STR "std0.5"
+#define O_AUTO_STD1_STR "std1"
+#define O_AUTO_STD2_STR "std2"
+#define O_AUTO_STD3_STR "std3"
+
+enum { O_CENTER_MEAN, O_CENTER_MODE };
+#define O_CENTER_MEAN_STR "mean"
+#define O_CENTER_MODE_STR "mode"
+
+enum { O_FORMAT_GIF, O_FORMAT_PNG, O_FORMAT_PNG16, O_FORMAT_PGM, O_FORMAT_PGMASC, O_FORMAT_DISP };
+#define O_FORMAT_GIF_STR "gif"
+#define O_FORMAT_PNG_STR "png"
+#define O_FORMAT_PNG16_STR "png16"
+#define O_FORMAT_PGM_STR "pgm"
+#define O_FORMAT_PGMASC_STR "pgmasc"
+#define O_FORMAT_DISP_STR "disp"
+
+void
+if2img_usage (const char *program)
+{
+ fprintf(stdout, "usage: %s sdfname outfile [OPTIONS]\n", kbasename(program));
+ fprintf(stdout, "Convert IF file to an image file\n");
+ fprintf(stdout, "\n");
+ fprintf(stdout, " sdfname Name of input SDF file\n");
+ fprintf(stdout, " outfile Name of output file\n");
+ fprintf(stdout, " --format Output format\n");
+ fprintf(stdout, " pgm PGM (portable graymap) format (default)\n");
+ fprintf(stdout, " pgmasc PGM (portable graymap) ASCII format\n");
+#ifdef HAVE_PNG
+ fprintf(stdout, " png PNG (8-bit) format\n");
+ fprintf(stdout, " png16 PNG (16-bit) format\n");
+#endif
+#ifdef HAVE_GIF
+ fprintf(stdout, " gif GIF format\n");
+#endif
+ fprintf(stdout, " disp Display on screen\n");
+ fprintf(stdout, " --center Center of window\n");
+ fprintf(stdout, " mode Mode is center of window (default)\n");
+ fprintf(stdout, " mean Mean is center of window\n");
+ fprintf(stdout, " --auto Set auto window\n");
+ fprintf(stdout, " full Use full window (default)\n");
+ fprintf(stdout, " std0.1 Use 0.1 standard deviation about center\n");
+ fprintf(stdout, " std0.5 Use 0.5 standard deviation about center\n");
+ fprintf(stdout, " std1 Use one standard deviation about center\n");
+ fprintf(stdout, " std2 Use two standard deviations about center\n");
+ fprintf(stdout, " std3 Use three standard deviations about center\n");
+ fprintf(stdout, " --scale Scaling factor for output size\n");
+ fprintf(stdout, " --min Set minimum intensity\n");
+ fprintf(stdout, " --max Set maximum intensity\n");
+ fprintf(stdout, " --stats Print image statistics\n");
+ fprintf(stdout, " --labels Print image labels\n");
+ fprintf(stdout, " --debug Set debug mode\n");
+ fprintf(stdout, " --verbose Set verbose mode\n");
+ fprintf(stdout, " --version Print version\n");
+ fprintf(stdout, " --help Print this help message\n");
+}
+
+
+int
+if2img_main (int argc, char *const argv[])
+{
+ ImageFile* pim = NULL;
+
+ double densmin = HUGE_VAL, densmax = -HUGE_VAL;
+ char *in_file, *out_file;
+ int opt_verbose = 0;
+ int opt_scale = 1;
+ int opt_auto = O_AUTO_FULL;
+ int opt_set_max = 0;
+ int opt_set_min = 0;
+ int opt_stats = 0;
+ int opt_debug = 0;
+ int opt_center = O_CENTER_MODE;
+ int opt_format = O_FORMAT_PGM;
+ int opt_labels = 0;
+
+ while (1)
+ {
+ int c = getopt_long (argc, argv, "", my_options, NULL);
+ char *endptr = NULL;
+ char *endstr;
+
+ if (c == -1)
+ break;
+
+ switch (c)
+ {
+ case O_MIN:
+ opt_set_min = 1;
+ densmin = strtod(optarg, &endptr);
+ endstr = optarg + strlen(optarg);
+ if (endptr != endstr)
+ {
+ fprintf(stderr, "Error setting --min to %s\n", optarg);
+ if2img_usage(argv[0]);
+ return (1);
+ }
+ break;
+ case O_MAX:
+ opt_set_max = 1;
+ densmax = strtod(optarg, &endptr);
+ endstr = optarg + strlen(optarg);
+ if (endptr != endstr)
+ {
+ fprintf(stderr, "Error setting --max to %s\n", optarg);
+ if2img_usage(argv[0]);
+ return (1);
+ }
+ break;
+ case O_SCALE:
+ opt_scale = strtol(optarg, &endptr, 10);
+ endstr = optarg + strlen(optarg);
+ if (endptr != endstr)
+ {
+ fprintf(stderr,"Error setting --scale to %s\n", optarg);
+ if2img_usage(argv[0]);
+ return (1);
+ }
+ break;
+ case O_AUTO:
+ if (strcmp(optarg, O_AUTO_FULL_STR) == 0)
+ opt_auto = O_AUTO_FULL;
+ else if (strcmp(optarg, O_AUTO_STD1_STR) == 0)
+ opt_auto = O_AUTO_STD1;
+ else if (strcmp(optarg, O_AUTO_STD0_5_STR) == 0)
+ opt_auto = O_AUTO_STD0_5;
+ else if (strcmp(optarg, O_AUTO_STD0_1_STR) == 0)
+ opt_auto = O_AUTO_STD0_1;
+ else if (strcmp(optarg, O_AUTO_STD2_STR) == 0)
+ opt_auto = O_AUTO_STD2;
+ else if (strcmp(optarg, O_AUTO_STD3_STR) == 0)
+ opt_auto = O_AUTO_STD3;
+ else
+ {
+ fprintf(stderr, "Invalid auto mode %s\n", optarg);
+ if2img_usage(argv[0]);
+ return (1);
+ }
+ break;
+ case O_CENTER:
+ if (strcmp(optarg, O_CENTER_MEAN_STR) == 0)
+ opt_center = O_CENTER_MEAN;
+ else if (strcmp(optarg, O_CENTER_MODE_STR) == 0)
+ opt_center = O_CENTER_MODE;
+ else
+ {
+ fprintf(stderr, "Invalid center mode %s\n", optarg);
+ if2img_usage(argv[0]);
+ return (1);
+ }
+ break;
+ case O_FORMAT:
+ if (strcmp(optarg, O_FORMAT_PGM_STR) == 0)
+ opt_format = O_FORMAT_PGM;
+ else if (strcmp(optarg, O_FORMAT_PGMASC_STR) == 0)
+ opt_format = O_FORMAT_PGMASC;
+#if HAVE_PNG
+ else if (strcmp(optarg, O_FORMAT_PNG_STR) == 0)
+ opt_format = O_FORMAT_PNG;
+ else if (strcmp(optarg, O_FORMAT_PNG16_STR) == 0)
+ opt_format = O_FORMAT_PNG16;
+#endif
+#if HAVE_GIF
+ else if (strcmp(optarg, O_FORMAT_GIF_STR) == 0)
+ opt_format = O_FORMAT_GIF;
+#endif
+ else if (strcmp(optarg, O_FORMAT_DISP_STR) == 0)
+ opt_format = O_FORMAT_DISP;
+ else {
+ fprintf(stderr, "Invalid format mode %s\n", optarg);
+ if2img_usage(argv[0]);
+ return (1);
+ }
+ break;
+ case O_LABELS:
+ opt_labels = 1;
+ break;
+ case O_VERBOSE:
+ opt_verbose = 1;
+ break;
+ case O_DEBUG:
+ opt_debug = 1;
+ break;
+ case O_STATS:
+ opt_stats = 1;
+ break;
+ case O_VERSION:
+#ifdef VERSION
+ fprintf(stdout, "Version %s\n", VERSION);
+#else
+ fprintf(stderr, "Unknown version number");
+#endif
+ exit(0);
+ case O_HELP:
+ case '?':
+ if2img_usage(argv[0]);
+ return (0);
+ default:
+ if2img_usage(argv[0]);
+ return (1);
+ }
+ }
+
+ if ((opt_format == O_FORMAT_DISP && optind + 1 != argc)
+ || (opt_format != O_FORMAT_DISP && optind + 2 != argc))
+ {
+ if2img_usage(argv[0]);
+ return (1);
+ }
+
+ in_file = argv[optind];
+
+ if (opt_format != O_FORMAT_DISP)
+ out_file = argv[optind+1];
+ else out_file = NULL;
+
+ pim = new ImageFile (in_file);
+ ImageFile& im = *pim;
+ if (! im.adf.fileRead()) {
+ fprintf(stderr, "File %s does not exist\n", in_file);
+ return (1);
+ }
+
+ if (opt_labels) {
+ int nlabels = im.adf.getNumLabels();
+
+ for (int i = 0; i < nlabels; i++) {
+ Array2dFileLabel label;
+ im.adf.labelRead (label, i);
+ string str;
+ label.getDateString (str);
+
+ if (label.getLabelType() == Array2dFileLabel::L_HISTORY) {
+ cout << "History: " << label.getLabelString() << endl;
+ cout << " calc time = " << label.getCalcTime() << " secs" << endl;
+ cout << " Timestamp = " << str << endl;
+ } else if (label.getLabelType() == Array2dFileLabel::L_USER) {
+ cout << "Note: " << label.getLabelString() << endl;
+ cout << " Timestamp = %s" << str << endl;
+ }
+ }
+ }
+
+ if (opt_stats || (! (opt_set_max && opt_set_min))) {
+ double minfound = HUGE_VAL, maxfound = -HUGE_VAL;
+ double mode = 0, mean = 0, stddev = 0, window = 0;
+ double spread;
+ int hist[256];
+ int ibin, nbin = 256;
+ int max_bin, max_binindex;
+ double maxbin;
+ int nx = im.nx();
+ int ny = im.ny();
+ ImageFileArray v = im.getArray();
+
+ maxbin = nbin - 1;
+ for (int ix = 0; ix < nx; ix++) {
+ for (int iy = 0; iy < ny; iy++) {
+ if (v[ix][iy] > maxfound)
+ maxfound = v[ix][iy];
+ if (v[ix][iy] < minfound)
+ minfound = v[ix][iy];
+ mean += v[ix][iy];
+ }
+ }
+ spread = maxfound - minfound;
+ if (spread == 0)
+ mode = minfound;
+ else {
+ for (ibin = 0; ibin < nbin; ibin++)
+ hist[ibin] = 0;
+ for (int ix = 0; ix < nx; ix++) {
+ for (int iy = 0; iy < ny; iy++) {
+ int b = (int) ((((v[ix][iy] - minfound) / spread) * (double) maxbin) + 0.5);
+ hist[b]++;
+ }
+ }
+ max_binindex = 0;
+ max_bin = -1;
+ for (ibin = 0; ibin < nbin; ibin++) {
+ if (hist[ibin] > max_bin) {
+ max_bin = hist[ibin];
+ max_binindex = ibin;
+ }
+ }
+ mode = (((double) max_binindex) * spread / ((double) maxbin)) + minfound;
+ }
+
+ if (opt_auto == O_AUTO_FULL) {
+ if (! opt_set_max)
+ densmax = maxfound;
+ if (! opt_set_min)
+ densmin = minfound;
+ }
+ if (opt_stats || opt_auto != O_AUTO_FULL) {
+ mean /= nx * ny;
+ for (int ix = 0; ix < nx; ix++) {
+ for (int iy = 0; iy < ny; iy++) {
+ double diff = (v[ix][iy] - mean);
+ stddev += diff * diff;
+ }
+ }
+ stddev = sqrt(stddev / (nx * ny));
+ if (opt_auto == O_AUTO_FULL)
+ ;
+ else if (opt_auto == O_AUTO_STD1)
+ window = stddev;
+ else if (opt_auto == O_AUTO_STD0_1)
+ window = stddev * 0.1;
+ else if (opt_auto == O_AUTO_STD0_5)
+ window = stddev * 0.5;
+ else if (opt_auto == O_AUTO_STD2)
+ window = stddev * 2;
+ else if (opt_auto == O_AUTO_STD3)
+ window = stddev * 3;
+ else {
+ fprintf(stderr, "Internal Error: Invalid auto mode %d\n", opt_auto);
+ return (1);
+ }
+ }
+ if (opt_stats) {
+ fprintf(stdout,"nx=%d\n", nx);
+ fprintf(stdout,"ny=%d\n", ny);
+ fprintf(stdout,"min=%f\n", minfound);
+ fprintf(stdout,"max=%f\n", maxfound);
+ fprintf(stdout,"mean=%f\n", mean);
+ fprintf(stdout,"mode=%f\n", mode);
+ fprintf(stdout,"stddev=%f\n", stddev);
+ }
+ if (opt_auto != O_AUTO_FULL) {
+ double center;
+
+ if (opt_center == O_CENTER_MODE)
+ center = mode;
+ else if (opt_center == O_CENTER_MEAN)
+ center = mean;
+ else {
+ fprintf(stderr, "Internal Error: Invalid center mode %d\n", opt_center);
+ return (1);
+ }
+ if (! opt_set_max)
+ densmax = center + window;
+ if (! opt_set_min)
+ densmin = center - window;
+ }
+ }
+
+ if (opt_stats) {
+ fprintf(stdout,"min_disp=%f\n", densmin);
+ fprintf(stdout,"max_disp=%f\n", densmax);
+ }
+
+ if (opt_format == O_FORMAT_PGM)
+ sdf2d_to_pgm (im, out_file, opt_scale, opt_scale, densmin, densmax);
+ else if (opt_format == O_FORMAT_PGMASC)
+ sdf2d_to_pgmasc (im, out_file, opt_scale, opt_scale, densmin, densmax);
+#if HAVE_PNG
+ else if (opt_format == O_FORMAT_PNG)
+ sdf2d_to_png (im, out_file, 8, opt_scale, opt_scale, densmin, densmax);
+ else if (opt_format == O_FORMAT_PNG16)
+ sdf2d_to_png (im, out_file, 16, opt_scale, opt_scale, densmin, densmax);
+#endif
+#if HAVE_GIF
+ else if (opt_format == O_FORMAT_GIF)
+ sdf2d_to_gif (im, out_file, opt_scale, opt_scale, densmin, densmax);
+#endif
+ else if (opt_format == O_FORMAT_DISP) {
+#if HAVE_SGP
+ // image_display_scale (im, opt_scale, densmin, densmax);
+ // cio_kb_getc();
+ sgp2_close(sgp2_get_active_win());
+#endif
+ }
+ else
+ {
+ fprintf(stderr, "Internal Error: Invalid format mode %d\n", opt_format);
+ return (1);
+ }
+ return (0);
+}
+
+
+void
+sdf2d_to_pgm (ImageFile& im, char *outfile, int nxcell, int nycell, double densmin, double densmax)
+{
+ FILE *fp;
+ int irow;
+ unsigned char *rowp;
+ int nx = im.nx();
+ int ny = im.ny();
+ ImageFileArray v = im.getArray();
+
+ rowp = (unsigned char *) sys_alloc(nx * nxcell,"sdf2d_to_img");
+ if (rowp == NULL)
+ return;
+
+ if ((fp = fopen (outfile, "wb")) == NULL)
+ return;
+
+ fprintf(fp, "P5\n");
+ fprintf(fp, "%d %d\n", nx, ny);
+ fprintf(fp, "255\n");
+
+ for (irow = ny - 1; irow >= 0; irow--)
+ {
+ int icol, ir;
+
+ for (icol = 0; icol < nx; icol++)
+ {
+ double dens;
+ int p;
+ int pos = icol * nxcell;
+ dens = (v[icol][irow] - densmin) / (densmax - densmin);
+ if (dens < 0)
+ dens = 0;
+ else if (dens > 1)
+ dens = 1;
+ for (p = pos; p < pos + nxcell; p++)
+ {
+ rowp[p] = (unsigned int) (dens * 255.);
+ }
+ }
+ for (ir = 0; ir < nycell; ir++)
+ {
+ int ic;
+ for (ic = 0; ic < nx * nxcell; ic++)
+ fprintf(fp, "%c ", rowp[ic]);
+ }
+ }
+ sys_free(rowp, "if2img");
+
+ fclose(fp);
+}
+
+void
+sdf2d_to_pgmasc (ImageFile& im, char *outfile, int nxcell, int nycell, double densmin, double densmax)
+{
+ FILE *fp;
+ int irow;
+ unsigned char *rowp;
+ int nx = im.nx();
+ int ny = im.ny();
+ ImageFileArray v = im.getArray();
+
+ rowp = (unsigned char *) sys_alloc(nx * nxcell,"sdf2d_to_img");
+ if (rowp == NULL)
+ return;
+
+ if ((fp = fopen (outfile, "wb")) == NULL)
+ return;
+
+ fprintf(fp, "P2\n");
+ fprintf(fp, "%d %d\n", nx, ny);
+ fprintf(fp, "255\n");
+
+ for (irow = ny - 1; irow >= 0; irow--)
+ {
+ int icol, ir;
+
+ for (icol = 0; icol < nx; icol++)
+ {
+ double dens;
+ int p;
+ int pos = icol * nxcell;
+ dens = (v[icol][irow] - densmin) / (densmax - densmin);
+ if (dens < 0)
+ dens = 0;
+ else if (dens > 1)
+ dens = 1;
+ for (p = pos; p < pos + nxcell; p++)
+ {
+ rowp[p] = (unsigned int) (dens * 255.);
+ }
+ }
+ for (ir = 0; ir < nycell; ir++)
+ {
+ int ic;
+ for (ic = 0; ic < nx * nxcell; ic++)
+ fprintf(fp, "%d ", rowp[ic]);
+ fprintf(fp, "\n");
+ }
+ }
+ sys_free(rowp, "if2img");
+
+ fclose(fp);
+}
+
+
+#ifdef HAVE_PNG
+void
+sdf2d_to_png (ImageFile& im, char *outfile, int bitdepth, int nxcell, int nycell, double densmin, double densmax)
+{
+ FILE *fp;
+ png_structp png_ptr;
+ png_infop info_ptr;
+ int irow;
+ unsigned char *rowp;
+ double max_out_level = (1 << bitdepth) - 1;
+ int nx = im.nx();
+ int ny = im.ny();
+ ImageFileArray v = im.getArray();
+
+ rowp = (unsigned char *) sys_alloc(nx * nxcell * (bitdepth / 8),"sdf2d_to_img");
+ if (rowp == NULL)
+ return;
+
+ if ((fp = fopen (outfile, "wb")) == NULL)
+ return;
+
+ png_ptr = png_create_write_struct (PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
+ if (! png_ptr)
+ return;
+
+ info_ptr = png_create_info_struct(png_ptr);
+ if (! info_ptr)
+ {
+ png_destroy_write_struct(&png_ptr, (png_infopp) NULL);
+ fclose(fp);
+ return;
+ }
+
+ if (setjmp(png_ptr->jmpbuf))
+ {
+ png_destroy_write_struct(&png_ptr, &info_ptr);
+ fclose(fp);
+ return;
+ }
+
+ png_init_io(png_ptr, fp);
+
+ png_set_IHDR(png_ptr, info_ptr, nx * nxcell, ny * nycell, bitdepth, PNG_COLOR_TYPE_GRAY, PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_DEFAULT);
+
+ png_write_info(png_ptr, info_ptr);
+ for (irow = ny - 1; irow >= 0; irow--)
+ {
+ png_bytep row_pointer = rowp;
+ int icol, ir;
+
+ for (icol = 0; icol < nx; icol++)
+ {
+ double dens;
+ int p;
+ unsigned int outval;
+ int pos = icol * nxcell;
+ dens = (v[icol][irow] - densmin) / (densmax - densmin);
+ if (dens < 0)
+ dens = 0;
+ else if (dens > 1)
+ dens = 1;
+ outval = (unsigned int) (dens * max_out_level);
+ for (p = pos; p < pos + nxcell; p++)
+ {
+ if (bitdepth == 8)
+ rowp[p] = outval;
+ else {
+ int rowpos = p * 2;
+ rowp[rowpos] = (outval >> 8) & 0xFF;
+ rowp[rowpos+1] = (outval & 0xFF);
+ }
+ }
+ }
+ for (ir = 0; ir < nycell; ir++)
+ {
+ png_write_rows (png_ptr, &row_pointer, 1);
+ }
+ }
+ sys_free(rowp, "if2img");
+
+ png_write_end(png_ptr, info_ptr);
+ png_destroy_write_struct(&png_ptr, &info_ptr);
+
+ fclose(fp);
+}
+#endif
+
+#ifdef HAVE_GD
+#include "gd.h"
+#define N_GRAYSCALE 256
+#endif
+
+void
+sdf2d_to_gif (ImageFile& im, char *outfile, int nxcell, int nycell, double densmin, double densmax)
+{
+#ifdef HAVE_GD
+ gdImagePtr gif;
+ FILE *out;
+ int gs_indices[N_GRAYSCALE];
+ int i;
+ int irow;
+ int lastrow;
+ unsigned char *rowp;
+ int nx = im.nx();
+ int ny = im.ny();
+ ImageFileArray v = im.getArray();
+
+ rowp = (unsigned char *) sys_alloc(nx * nxcell,"sdf2d_to_img");
+ if (rowp == NULL)
+ return;
+
+ gif = gdImageCreate(nx * nxcell, ny * nycell);
+ for (i = 0; i < N_GRAYSCALE; i++)
+ gs_indices[i] = gdImageColorAllocate(gif, i, i, i);
+
+ lastrow = ny * nycell - 1;
+ for (irow = 0; irow < ny; irow++)
+ {
+ int icol, ir;
+ int rpos = irow * nycell;
+ for (ir = rpos; ir < rpos + nycell; ir++)
+ {
+ for (icol = 0; icol < nx; icol++)
+ {
+ double dens;
+ int ic;
+ int cpos = icol * nxcell;
+ dens = (v[icol][irow] - densmin) / (densmax - densmin);
+ if (dens < 0)
+ dens = 0;
+ else if (dens > 1)
+ dens = 1;
+ for (ic = cpos; ic < cpos + nxcell; ic++)
+ {
+ rowp[ic] = (unsigned int) (dens * (double) (N_GRAYSCALE - 1));
+ gdImageSetPixel(gif, ic, lastrow - ir, gs_indices[rowp[ic]]);
+ }
+ }
+ }
+ }
+ sys_free(rowp, "if2img");
+
+ if ((out = fopen(outfile,"w")) == NULL)
+ {
+ fprintf(stderr,"Error opening output file %s for writing\n", outfile);
+ exit(1);
+ }
+ gdImageGif(gif,out);
+ fclose(out);
+ gdImageDestroy(gif);
+#else
+ fprintf(stderr, "This version does not support GIF");
+#endif
+}
+
+#ifndef NO_MAIN
+int
+main (int argc, char *const argv[])
+{
+ return (if2img_main(argc, argv));
+}
+#endif
projects / ctsim.git / commitdiff