summaryrefslogtreecommitdiff
path: root/src/gipfel.cxx
blob: bed5035fc8a97063d99cc2f2dddd97dd4ee29a30 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
//
// Copyright 2007-2023 Johannes Hofmann <Johannes.Hofmann@gmx.de>
//
// This software may be used and distributed according to the terms
// of the GNU General Public License, incorporated herein by reference.

#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <stdlib.h>
#include <libgen.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <math.h>
#include <assert.h>
#include <algorithm>

#include <FL/Fl.H>
#include <FL/Fl_Window.H>
#include <FL/Fl_Scroll.H>
#include <FL/Fl_File_Chooser.H>
#include <FL/Fl_Input.H>
#include <FL/Fl_Int_Input.H>
#include <FL/Fl_Menu_Bar.H>
#include <FL/Fl_Menu_Item.H>
#include <FL/Fl_Valuator.H>
#include <FL/Fl_Value_Slider.H>
#include <FL/Fl_Value_Input.H>
#include <FL/Fl_Text_Display.H>
#include <FL/Fl_Text_Buffer.H>

#include "Fl_Value_Dial.H"
#include "Fl_Search_Chooser.H"
#include "GipfelWidget.H"
#include "JPEGOutputImage.H"
#include "TIFFOutputImage.H"
#include "PreviewOutputImage.H"
#include "Stitch.H"
#include "ScreenDump.H"
#include "choose_hill.H"
#include "../config.h"

#ifndef STD_DATADIR
#define STD_DATADIR "/usr/local/share"
#endif

#define GIPFEL_DATADIR STD_DATADIR "/" PACKAGE_NAME
#define DATAFILE "gipfel.dat"

static char *run_dir = NULL;
static char *img_file = NULL;
static char *data_file = NULL;

static GipfelWidget *gipf = NULL;
static Fl_Scroll *scroll;
static Fl_Window *control_win, *view_win;
static Fl_Dial *s_center = NULL;
static Fl_Slider *s_nick, *s_focal_length, *s_tilt, *s_height_dist, *s_track_width;
static Fl_Value_Input *i_view_lat, *i_view_long, *i_view_height;
static Fl_Value_Input *i_distortion_k0, *i_distortion_k1, *i_distortion_x0;
static Fl_Box *b_viewpoint;
static Fl_Menu_Bar *mb;

#define STITCH_PREVIEW           1
#define STITCH_JPEG              2
#define STITCH_TIFF              4

static int stitch(ScanImage::mode_t m , int b_16,
	int stitch_w, int stitch_h,
	double from, double to, int type, const char *path, int argc, char **argv);

static int export_hills(const char *export_file, double visibility);
static int export_position();

static int
confirm_overwrite(const char *f) {
    struct stat sb;

    if (stat(f, &sb) == 0)
        return fl_choice("%s exists.\n", "Cancel", "Overwrite", NULL, f);
    else
        return 1;
}

static char *
file_installed_or_local(const char *inst_dir, const char *name) {
	assert(run_dir);

	struct stat sb;
	int buflen = strlen(inst_dir) + strlen(run_dir) + strlen(name) + 1;
	char *buf = (char *) malloc (buflen);

	snprintf(buf, buflen, "%s/%s", inst_dir, name);
	if (stat(buf, &sb) == 0)
		return buf;

	snprintf(buf, buflen, "%s/../%s", run_dir, name);
	if (stat(buf, &sb) == 0)
		return buf;

	free(buf);
	return NULL;
}

void set_values() {
	double k0 = 0.0, k1 = 0.0, x0 = 0.0;

	s_center->value(gipf->get_center_angle());
	s_nick->value(gipf->get_nick_angle());
	s_focal_length->value(gipf->get_focal_length_35mm());
	s_tilt->value(gipf->get_tilt_angle());
	s_height_dist->value(gipf->get_height_dist_ratio());
	i_view_lat->value(gipf->get_view_lat());
	i_view_long->value(gipf->get_view_long());
	i_view_height->value(gipf->get_view_height());
	b_viewpoint->label(gipf->get_viewpoint());
	if (gipf->projection() == ProjectionLSQ::RECTILINEAR) {
		mb->mode(9, FL_MENU_RADIO|FL_MENU_VALUE);
		mb->mode(10, FL_MENU_RADIO);
	} else {
		mb->mode(10, FL_MENU_RADIO|FL_MENU_VALUE);
		mb->mode(9, FL_MENU_RADIO);
	}

	gipf->get_distortion_params(&k0, &k1, &x0);
	i_distortion_k0->value(k0);
	i_distortion_k1->value(k1);
	i_distortion_x0->value(x0);
}

void quit_cb() {
	if (Fl::event() == FL_SHORTCUT && Fl::event_key() == FL_Escape) 
		return; // ignore Escape
	exit(0);
}

void open_cb() {
	char *file = fl_file_chooser("Open File?", "*.jpg", img_file);
	if (file) {
		gipf->load_image(file);
		scroll->position(0, 0);
		view_win->label(file);
		view_win->redraw();
		control_win->label(file);
		set_values();
		if (img_file)
			free(img_file);
		img_file = strdup(file);
	}  
}

void track_cb() {
	char *file = fl_file_chooser("Track File?", NULL, NULL);
	if (file && gipf->load_track(file) == 0)
		s_track_width->activate();
}

void save_cb() {
	char *file = fl_file_chooser("Save Image As?", NULL, img_file);
	if (file && confirm_overwrite(file))
		if (gipf->save_image(file))
			fl_message("ERROR: Saving image %s failed.", file);	
}

void dump_cb(Fl_Widget * o, void*) {
	fl_cursor(FL_CURSOR_WAIT);
	ScreenDump dmp(gipf); // needs to be done before fl_file_chooser()
	fl_cursor(FL_CURSOR_DEFAULT);
	char *file = fl_file_chooser("Save Screen Dump As?", "*.jpg", NULL);
	if (file && confirm_overwrite(file)) {
		JPEGOutputImage out(file, 95);
		if (dmp.save(&out))
			fl_message("ERROR: Saving image %s failed.", file);	
	}
}

void focal_length_cb(Fl_Slider* o, void*) {
	gipf->set_focal_length_35mm(o->value());
}

void angle_cb(Fl_Slider* o, void*) {
	gipf->set_center_angle(o->value());
}

void nick_cb(Fl_Slider* o, void*) {
	gipf->set_nick_angle(o->value());
}

void tilt_cb(Fl_Slider* o, void*) {
	gipf->set_tilt_angle(o->value());
}

void h_d_cb(Fl_Slider* o, void*) {
	gipf->set_height_dist_ratio(o->value());
}

void view_lat_cb(Fl_Value_Input* o, void*) {
	gipf->set_view_lat(o->value());
}

void view_long_cb(Fl_Value_Input* o, void*) {
	gipf->set_view_long(o->value());
}

void view_height_cb(Fl_Value_Input* o, void*) {
	gipf->set_view_height(o->value());
}

void track_width_cb(Fl_Value_Input* o, void*) {
	gipf->set_track_width(o->value());
}

void viewpoint_cb(Fl_Value_Input* o, void*) {
	Hill *m = choose_hill(gipf->get_mountains(), "Choose Viewpoint");
	if (m) {
		gipf->set_viewpoint(m);
		set_values();
	}
}

void proj_cb(Fl_Value_Input* o, void*d) {
	if (d)
		gipf->projection(ProjectionLSQ::CYLINDRICAL);
	 else 
		 gipf->projection(ProjectionLSQ::RECTILINEAR);
}

void hidden_cb(Fl_Menu_* o, void*d) {
	gipf->set_show_hidden(o->mvalue()->value() != 0); 
}

void save_distortion_cb(Fl_Widget *, void *) {
	char buf[1024];
	const char * prof_name;
	double k0, k1, x0;

	buf[0] = '\0';
	gipf->get_distortion_params(&k0, &k1, &x0);

	gipf->get_distortion_profile_name(buf, sizeof(buf));
	prof_name = fl_input("Save Distortion Profile (k0=%f, k1=%f, x0=%f)",
		buf, k0, k1, x0);

	if (prof_name == NULL)
		return;

	if (gipf->save_distortion_params(prof_name, 0) != 0) {
		if (fl_choice("A profile with this name exists.\n",
				"Cancel", "Overwrite", NULL) == 1)
			gipf->save_distortion_params(prof_name, 1);
	}
	set_values();
}

void load_distortion_cb(Fl_Widget *, void *) {
	char buf[1024];
	const char * prof_name;

	buf[0] = '\0';
	gipf->get_distortion_profile_name(buf, sizeof(buf));
	prof_name = fl_input("Load Distortion Profile", buf);

	if (prof_name == NULL)
		return;

	if (gipf->load_distortion_params(prof_name) != 0)
		fl_alert("Could not load profile %s.", prof_name);
	else
		set_values();
}

void distortion_cb(Fl_Value_Input*, void*) {
	gipf->set_distortion_params(
		i_distortion_k0->value(),
		i_distortion_k1->value(),
		i_distortion_x0->value());
}

void about_cb() {
	fl_message("gipfel -- Photogrammetry for Mountain Images.\n"
		"Version %s\n\n"
		"(c) Johannes Hofmann 2006-2023\n\n"
		"Homepage: http://flpsed.org/gipfel.html\n\n"
		"Default datafile from http://www.viewfinderpanoramas.org/ and\n"
        "http://www.alpin-koordinaten.de\n",
		VERSION);

}

void readme_cb() {
	char *readme = file_installed_or_local(DOCDIR, "README");
	if (!readme) {
		fprintf(stderr, "README file not found\n");
		return;
	}
	Fl_Window *win = new Fl_Window(800, 600, "README");
	Fl_Text_Buffer *textBuf = new Fl_Text_Buffer();
	Fl_Text_Display *textDisp = new Fl_Text_Display(0, 0, win->w(), win->h());

	textDisp->textfont(FL_COURIER);
	textDisp->buffer(textBuf);	
	win->resizable(textDisp);
	textBuf->appendfile(readme);
	free(readme);
	win->end();
	win->show();
}

void fill_menubar(Fl_Menu_Bar* mb) {
	mb->add("&File/L&oad Image", FL_CTRL+'o', (Fl_Callback*)open_cb);
	mb->add("&File/&Save Image", FL_CTRL+'s', (Fl_Callback*)save_cb);
	mb->add("&File/Choose &Viewpoint", FL_CTRL+'v', (Fl_Callback*)viewpoint_cb);
	mb->add("&File/Load &Track", FL_CTRL+'t', (Fl_Callback*)track_cb);
	mb->add("&File/Screen &Dump", FL_CTRL+'d', (Fl_Callback*)dump_cb);
	mb->add("&File/&Quit", FL_CTRL+'q', (Fl_Callback*)quit_cb);

	mb->add("&Projection/Normal Projection", 0, (Fl_Callback *)proj_cb, 
		(void *)0, FL_MENU_RADIO|FL_MENU_VALUE);
	mb->add("&Projection/Panoramic Projection", 0, (Fl_Callback *)proj_cb, 
		(void *)1, FL_MENU_RADIO);

	mb->add("&Distortion/Load Profile", 0, (Fl_Callback *)load_distortion_cb);
	mb->add("&Distortion/Save Profile", 0, (Fl_Callback *)save_distortion_cb);

	mb->add("&Option/Show Hidden", 0, (Fl_Callback *) hidden_cb, 
		(void *)0, FL_MENU_TOGGLE);

	mb->add("&Help/Readme", 0, (Fl_Callback*)readme_cb);
	mb->add("&Help/About", 0, (Fl_Callback*)about_cb);
}

void usage() {
	fprintf(stderr,
		"usage: gipfel [-v <viewpoint>] [-d <file>]\n"
		"          [-s] [-j <file>] [-t <dir] [-w <width>] [-h <height>]\n"
		"          [-e <file>] [-E] [-p]\n"
		"          [<image(s)>]\n"
		"   -v <viewpoint>  Set point from which the picture was taken.\n"
		"                   This must be a string that unambiguously \n"
		"                   matches the name of an entry in the data file.\n"
		"   -d <file>       Use <file> for GPS data.\n"
		"   -V <visibility> Set initial visibility.\n"
		"   -u <k0>,<k1>    Use distortion correction values k0,k1.\n"
		"   -s              Stitch mode.\n"
		"   -4              Create 16bit output (only with TIFF stitching).\n"
		"   -r <from>,<to>  Stitch range in degrees (e.g. 100.0,200.0).\n"
		"   -b              Use bicubic interpolation for stitching.\n"
		"   -w <width>      Width of result image.\n"
		"   -h <height>     Height of result image.\n"
		"   -j <file>       JPEG output file in Stitch mode.\n"
		"   -t <file>       TIFF output file in Stitch mode.\n"
		"   -p              Export position of image to stdout.\n"
		"   -e <file>       Export positions of hills from <file> on image.\n"
		"   -E              Export hills from default data file.\n"
		"      <image(s)>   JPEG file(s) to use.\n");
}

Fl_Window * 
create_control_window() {
	Fl_Window *win = new Fl_Window(400,400);
	mb = new Fl_Menu_Bar(0, 0, 400, 30);
	fill_menubar(mb);

	s_center = new Fl_Value_Dial(40, 60, 150, 150, NULL);
	s_center->type(FL_LINE_DIAL);
	s_center->labelsize(10);
	s_center->step(0.01);
	s_center->bounds(0.0, 360.0);
	s_center->angles(180, 540);
	s_center->callback((Fl_Callback*)angle_cb);

	win->add(new Fl_Box(95, 40, 40, 20, "North"));
	win->add(new Fl_Box(95, 210, 40, 20, "South"));
	win->add(new Fl_Box(190, 125, 40, 20, "East"));
	win->add(new Fl_Box(0, 125, 40, 20, "West"));

	s_focal_length = new Fl_Value_Slider(235, 60, 160, 15, "Focal Length in 35mm");
	s_focal_length->type(1);
	s_focal_length->box(FL_THIN_DOWN_BOX);
	s_focal_length->labelsize(10);
	s_focal_length->step(0.01);
	s_focal_length->bounds(1.0, 300.0);
	s_focal_length->slider(FL_UP_BOX);
	s_focal_length->callback((Fl_Callback*)focal_length_cb);
	s_focal_length->align(FL_ALIGN_TOP);

	s_nick = new Fl_Value_Slider(235, 90, 160, 15, "Nick (deg.)");
	s_nick->type(1);
	s_nick->box(FL_THIN_DOWN_BOX);
	s_nick->labelsize(10);
	s_nick->step(0.01);
	s_nick->bounds(-40.0, 20.0);
	s_nick->slider(FL_UP_BOX);
	s_nick->callback((Fl_Callback*)nick_cb);
	s_nick->align(FL_ALIGN_TOP);

	s_tilt = new Fl_Value_Slider(235, 120, 160, 15, "Tilt (deg.)");
	s_tilt->type(1);
	s_tilt->box(FL_THIN_DOWN_BOX);
	s_tilt->labelsize(10);
	s_tilt->step(0.01);
	s_tilt->bounds(-10.0, 10.0);
	s_tilt->slider(FL_UP_BOX);
	s_tilt->callback((Fl_Callback*)tilt_cb);
	s_tilt->align(FL_ALIGN_TOP);

	s_height_dist = new Fl_Value_Slider(235, 150, 160, 15, "Visibility");
	s_height_dist->type(1);
	s_height_dist->box(FL_THIN_DOWN_BOX);
	s_height_dist->labelsize(10);
	s_height_dist->step(-0.001);
	s_height_dist->bounds(0.1, 0.01);
	s_height_dist->slider(FL_UP_BOX);
	s_height_dist->callback((Fl_Callback*)h_d_cb);
	s_height_dist->align(FL_ALIGN_TOP);

	s_track_width = new Fl_Value_Slider(235, 180, 160, 15, "Track Width");
	s_track_width->type(1);
	s_track_width->box(FL_THIN_DOWN_BOX);
	s_track_width->labelsize(10);
	s_track_width->step(1.0);
	s_track_width->bounds(1.0, 500.0);
	s_track_width->value(200.0);
	s_track_width->slider(FL_UP_BOX);
	s_track_width->callback((Fl_Callback*)track_width_cb);
	s_track_width->align(FL_ALIGN_TOP);
	s_track_width->deactivate();

	// Viewpoint Stuff
	b_viewpoint = new Fl_Box(FL_DOWN_BOX, 30, 305, 300, 80, "");
	b_viewpoint->align(FL_ALIGN_TOP);

	i_view_lat = new Fl_Value_Input(40, 320, 100, 20, "Latitude");
	i_view_lat->labelsize(10);
	i_view_lat->align(FL_ALIGN_TOP);
	i_view_lat->when(FL_WHEN_ENTER_KEY);
	i_view_lat->callback((Fl_Callback*)view_lat_cb);

	i_view_long = new Fl_Value_Input(200, 320, 100, 20, "Longitude");
	i_view_long->labelsize(10);
	i_view_long->align(FL_ALIGN_TOP);
	i_view_long->when(FL_WHEN_ENTER_KEY);
	i_view_long->callback((Fl_Callback*)view_long_cb);

	i_view_height = new Fl_Value_Input(40, 360, 80, 20, "Height");
	i_view_height->labelsize(10);
	i_view_height->align(FL_ALIGN_TOP);
	i_view_height->when(FL_WHEN_ENTER_KEY);
	i_view_height->callback((Fl_Callback*)view_height_cb);

	i_distortion_k0 = new Fl_Value_Input(250, 200, 80, 20, "k0");
	i_distortion_k0->labelsize(10);
	i_distortion_k0->textsize(10);
	i_distortion_k0->align(FL_ALIGN_LEFT);
	i_distortion_k0->when(FL_WHEN_ENTER_KEY);
	i_distortion_k0->callback((Fl_Callback*)distortion_cb);

	i_distortion_k1 = new Fl_Value_Input(250, 225, 80,  20, "k1");
	i_distortion_k1->labelsize(10);
	i_distortion_k1->textsize(10);
	i_distortion_k1->align(FL_ALIGN_LEFT);
	i_distortion_k1->when(FL_WHEN_ENTER_KEY);
	i_distortion_k1->callback((Fl_Callback*)distortion_cb);

	i_distortion_x0 = new Fl_Value_Input(250, 250, 80,  20, "x0");
	i_distortion_x0->labelsize(10);
	i_distortion_x0->textsize(10);
	i_distortion_x0->align(FL_ALIGN_LEFT);
	i_distortion_x0->when(FL_WHEN_ENTER_KEY);
	i_distortion_x0->callback((Fl_Callback*)distortion_cb);

	win->end();
	return win;
}

int main(int argc, char** argv) {
	char c, **my_argv;
	char *view_point = NULL;
	int err, my_argc, sx, sy, sw, sh;
	int stitch_flag = 0, stitch_w = 2000, stitch_h = 500;
	int jpeg_flag = 0, tiff_flag = 0, distortion_flag = 0, position_flag = 0;
	int export_flag = 0;
	int bicubic_flag = 0, b_16_flag = 0;
	double stitch_from = 0.0, stitch_to = 380.0;
	double dist_k0 = 0.0, dist_k1 = 0.0, dist_x0 = 0.0;
	double visibility = 0.07;
	const char *outpath = "/tmp";
	const char *export_file = NULL;

	err = 0;
	while ((c = getopt(argc, argv, ":?d:v:sw:h:j:t:u:br:4e:V:pE")) != EOF) {
		switch (c) {  
			case '?':
				usage();
				exit(0);
				break;
			case 'd':
				data_file = optarg;
				break;
			case 'e':
				export_flag++;
				export_file = optarg;
				break;
			case 'E':
				export_flag++;
				break;
			case 'v':
				view_point = optarg;
				break;
			case 'V':
				visibility = atof(optarg);
				break;
			case 's':
				stitch_flag++;
				break;
			case 'p':
				position_flag++;
				break;
			case '4':
				b_16_flag++;
				break;
			case 'r':
				stitch_flag++;
				if (optarg && strcmp(optarg, ":")) {
					stitch_from = atof(optarg);
					if (strchr(optarg, ','))
						stitch_to = atof(strchr(optarg, ',') + 1);
				}
				break;
			case 'u':
				char *c;
				distortion_flag++;
				if (optarg && strcmp(optarg, ":")) {
					dist_k0 = atof(optarg);
					c = strchr(optarg, ',');
					if (c) {
						dist_k1 = atof(strchr(optarg, ',') + 1);
						c = strchr(c + 1, ',');
						if (c)
							dist_x0 = atof(strchr(optarg, ',') + 1);
					}
				}
				break;
			case 'j':
				jpeg_flag++;
				outpath = optarg;
				break;
			case 't':
				tiff_flag++;
				outpath = optarg;
				break;
			case 'w':
				stitch_w = atoi(optarg);
				break;
			case 'h':
				stitch_h = atoi(optarg);
				break;
			case 'b':
				bicubic_flag++;
				break;
			default:
				err++;
		}
	}

	my_argc = argc - optind;
	my_argv = argv + optind;

	char *exec_file = strdup(argv[0]);
	run_dir = strdup(dirname(exec_file));
	free(exec_file);

	if (my_argc >= 1)
		img_file = strdup(my_argv[0]);

	if (data_file == NULL)
		data_file = file_installed_or_local(GIPFEL_DATADIR, "gipfel.dat");

	if (data_file == NULL || err) {
		usage();
		exit(1);
	}

	if (stitch_flag) {
		int type = 0;
		if (jpeg_flag) {
			type = STITCH_JPEG;
		} else if (tiff_flag) {
			type = STITCH_TIFF;
		} else {
			type = STITCH_PREVIEW;
		}

		return stitch(bicubic_flag ? ScanImage::BICUBIC : ScanImage::NEAREST,
			b_16_flag,
			stitch_w, stitch_h, stitch_from, stitch_to,
			type, outpath, my_argc, my_argv);

	} else if (export_flag) {
		return export_hills(export_file, visibility);
	} else if (position_flag) {
		return export_position();
	}

	Fl::get_system_colors();
	if (getenv("FLTK_SCHEME"))
		Fl::scheme(NULL);
	else
		Fl::scheme("plastic");

	control_win = create_control_window();
	control_win->callback((Fl_Callback*) quit_cb);

	view_win = new Fl_Window(800, 600);
	view_win->callback((Fl_Callback*) quit_cb);

	// The Fl_Group is used to avoid FL_DAMAGE_ALL in Fl_Scroll::position 
	Fl_Group *g = new Fl_Group(0, 0, view_win->w(), view_win->h()); 
	view_win->resizable(g);
	scroll = new Fl_Scroll(0, 0, view_win->w(), view_win->h());

	gipf = new GipfelWidget(0, 0, 800, 600, set_values);
	if (img_file) {
		gipf->load_image(img_file);
		view_win->label(img_file);
		control_win->label(img_file);
	}

	if (distortion_flag)
		gipf->set_distortion_params(dist_k0, dist_k1, dist_x0);

	Fl::screen_xywh(sx, sy, sw, sh);
	view_win->size(std::min(gipf->w(), sw), std::min(gipf->h(), sh));
	scroll->size(view_win->w(), view_win->h());

	gipf->load_data(data_file);
	gipf->set_height_dist_ratio(visibility);

	scroll->end();  

	set_values();

	view_win->resizable(scroll);

	view_win->end();
	view_win->show(1, argv); 
	control_win->show(1, argv); 

	if (view_point)
		gipf->set_viewpoint(view_point);
	else if (img_file && 
		(isnan(gipf->get_view_lat()) || isnan(gipf->get_view_long())))
		viewpoint_cb(NULL, NULL);

	return Fl::run();
}

static int
stitch(ScanImage::mode_t m, int b_16,
	int stitch_w, int stitch_h, double from, double to,
	int type, const char *path, int argc, char **argv) {

	Fl_Window *win;
	Fl_Scroll *scroll;
	Stitch *st = new Stitch();

	for (int i = 0; i < argc; i++)
		st->load_image(argv[i]);

	if (type & STITCH_JPEG) {

		st->set_output(new JPEGOutputImage(path, 90));
		st->resample(m, stitch_w, stitch_h, from, to);

	} else if (type & STITCH_TIFF) {

		st->set_output(new TIFFOutputImage(path, b_16 ? 16 : 8));
		st->resample(m, stitch_w, stitch_h, from, to);

	} else {
		win = new Fl_Window(0,0, stitch_w, stitch_h);
		scroll = new Fl_Scroll(0, 0, win->w(), win->h());
		PreviewOutputImage *img =
			new PreviewOutputImage(0, 0, stitch_w, stitch_h);

		win->resizable(scroll);
		win->show(0, argv); 
		st->set_output(img);

		st->resample(m, stitch_w, stitch_h, from, to);

		img->redraw();
		Fl::run();
	}

	return 0;
}

static int
export_hills(const char *export_file, double visibility) {
	int ret;
		
	if (!img_file) {
		fprintf(stderr, "export: No image file given.\n");
		return 1;
	}

	gipf = new GipfelWidget(0,0,800,600, NULL);
	gipf->load_image(img_file);
	gipf->load_data(data_file);
	gipf->set_height_dist_ratio(visibility);
	ret = gipf->export_hills(export_file, stdout);
	delete gipf;
	gipf = NULL;

	return ret;
}

static int
export_position() {
	ImageMetaData md;

	if (!img_file) {
		fprintf(stderr, "export: No image file given.\n");
		return 1;
	}

	if (md.load_image(img_file) == 0) {
		printf(",%s,,%f,%f,%d\n", img_file,
			md.latitude(),
			md.longitude(),
			(int) rint(md.height()));

		return 0;
	} else {
		return 1;
	}
}