Add support for GeoTIFF images

.appveyor.yml

@@ -1,4 +1,4 @@
-version: 4.17.{build}
+version: 5.0.{build}
 configuration: Release
 platform: Any CPU
 environment:
@@ -34,9 +34,11 @@ build_script:
 
     copy pkg\%NSI% installer
 
+    copy pkg\ellipsoids.csv installer
+
     copy pkg\datums.csv installer
 
-    copy pkg\ellipsoids.csv installer
+    copy pkg\pcs.csv installer
     
     copy pkg\maps.txt installer
 

gpxsee.pro

@@ -1,5 +1,5 @@
 TARGET = GPXSee
-VERSION = 4.17
+VERSION = 5.0
 QT += core \
     gui \
     network
@@ -87,6 +87,11 @@ HEADERS += src/config.h \
     src/map/atlas.h \
     src/map/matrix.h \
     src/map/misc.h \
+    src/map/geotiff.h \
+    src/map/pcs.h \
+    src/map/transform.h \
+    src/map/mapfile.h \
+    src/map/tifffile.h \
     src/data/graph.h \
     src/data/poi.h \
     src/data/waypoint.h \
@@ -163,13 +168,17 @@ SOURCES += src/main.cpp \
     src/map/matrix.cpp \
     src/map/ellipsoid.cpp \
     src/map/datum.cpp \
-    src/map/projection.cpp \
     src/map/mercator.cpp \
     src/map/transversemercator.cpp \
     src/map/utm.cpp \
     src/map/lambertconic.cpp \
     src/map/albersequal.cpp \
     src/map/lambertazimuthal.cpp \
+    src/map/geotiff.cpp \
+    src/map/pcs.cpp \
+    src/map/transform.cpp \
+    src/map/mapfile.cpp \
+    src/map/tifffile.cpp \
     src/data/data.cpp \
     src/data/poi.cpp \
     src/data/track.cpp \
@@ -182,7 +191,8 @@ SOURCES += src/main.cpp \
     src/data/fitparser.cpp \
     src/data/igcparser.cpp \
     src/data/nmeaparser.cpp \
-    src/data/str2int.cpp
+    src/data/str2int.cpp \
+    src/map/projection.cpp
 RESOURCES += gpxsee.qrc
 TRANSLATIONS = lang/gpxsee_cs.ts \
     lang/gpxsee_sv.ts \
@@ -198,7 +208,8 @@ macx {
         icons/nmea.icns \
         pkg/maps.txt \
         pkg/ellipsoids.csv \
-        pkg/datums.csv
+        pkg/datums.csv \
+        pkg/pcs.csv
     APP_RESOURCES.path = Contents/Resources
     QMAKE_BUNDLE_DATA += APP_RESOURCES
 }

pkg/datums.csv

@@ -1,123 +1,283 @@
-Adindan,4201,5,-162,-12,206
+TWD97,3824,7019,0,0,0
-Afgooye,4205,15,-43,-163,45
+IGRS,3889,7019,0,0,0
-Ain el Abd 1970,4204,14,-150,-251,-2
+Hermannskogel,3906,7004,653,-212,449
-Anna 1 Astro 1965,4708,2,-491,-22,435
+MOLDREF99,4023,7019,0,0,0
-Arc 1950,4209,5,-143,-90,-294
+RGRDC 2005,4046,7019,0,0,0
-Arc 1960,4210,5,-160,-8,-300
+REGCAN95,4081,7019,0,0,0
-Ascension Island 1958,4712,14,-207,107,52
+GGRS 87,4121,7019,-199.87,74.79,246.62
-Astro B4 Sorol Atoll,4707,14,114,-116,-333
+Finland Hayford,4123,7022,-78,-231,-97
-Astro Beacon 1945,4709,14,145,75,-272
+RT 90,4124,7004,498,-36,568
-Astro DOS 71/4,4710,14,-320,550,-494
+Samboja,4125,7004,-404.78,685.68,45.47
-Astronomic Stn 1952,4711,14,124,-234,-25
+Tete,4127,7008,-80,-100,-228
-Australian Geodetic 1966,4202,2,-133,-48,148
+Indian 1960,4131,7015,198,881,317
-Australian Geodetic 1984,4203,2,-134,-48,149
+FD58,4132,7012,-241.54,-163.64,396.06
-Australian Geocentric 1994 (GDA94),4283,11,0,0,0 
+Old Hawaiian,4135,7008,61,-285,-181
-Austrian,4312,3,594,84,471
+Puerto Rico,4139,7008,11,72,-101
-Bellevue (IGN),4714,14,-127,-769,472
+NAD83(CSRS98),4140,7019,0,0,0
-Bermuda 1957,4216,4,-73,213,296
+Israel 1993,4141,7019,-48,55,52
-Bogota Observatory,4218,14,307,304,-318
+Locodjo 1965,4142,7012,-125,53,467
-Campo Inchauspe,4221,14,-148,136,90
+Abidjan 1987,4143,7012,-124.76,53,466.79
-Canton Astro 1966,4716,14,298,-304,-375
+Kalianpur 1937,4144,7015,214,804,268
-Cape,4222,5,-136,-108,-292
+Kalianpur 1962,4145,7044,283,682,231
-Cape Canaveral,4717,4,-2,150,181
+Kalianpur 1975,4146,7045,295,736,257
-Carthage,4223,5,-263,6,431
+Hanoi 1972,4147,7024,-17.51,-108.32,-62.39
-CH-1903,4149,3,674,15,405
+Hartebeeshoek94,4148,7030,0,0,0
-Chatham 1971,4672,14,175,-38,113
+CH-1903,4149,7004,674,15,405
-Chua Astro,4224,14,-134,229,-29
+NAD83(HARN),4152,7019,0,0,0
-Corrego Alegre,4225,14,-206,172,-6
+ED50(ED77),4154,7022,-117,-132,-164
-Djakarta (Batavia),4211,3,-377,681,-50
+Dabola 1981,4155,7011,-83,37,124
-DOS 1968,,14,230,-199,-752
+Naparima 1955,4158,7022,-0.465,372.095,171.736
-Easter Island 1967,4719,14,211,147,111
+ELD79,4159,7022,-115.8543,-99.0583,-152.4616
-Egypt,,14,-130,-117,-151
+Pampa del Castillo,4161,7022,27.5,14,186.4
-European 1950,4230,14,-87,-98,-121
+Yemen NGN96,4163,7030,0,0,0
-European 1950 (Mean France),,14,-87,-96,-120
+South Yemen,4164,7024,-76,-138,67
-European 1950 (Spain and Portugal),,14,-84,-107,-120 
+Bissau,4165,7022,-173,253,27
-European 1979,4668,14,-86,-98,-119
+NZGD2000,4167,7030,0,0,0
-Finland Hayford,4123,14,-78,-231,-97
+Accra,4168,7029,-199,32,322
-Gandajika Base,4233,14,-133,-321,50
+American Samoa 1962,4169,7008,-115,118,426
-Geodetic Datum 1949,4272,14,84,-22,209
+SIRGAS 1995,4170,7019,0,0,0
-GGRS 87,4121,11,-199.87,74.79,246.62
+RGF93,4171,7019,0,0,0
-Guam 1963,4675,4,-100,-248,259
+IRENET95,4173,7019,0,0,0
-GUX 1 Astro,4718,14,252,-209,-751
+Sierra Leone 1968,4175,7012,-88,4,101
-Hartebeeshoek94,4148,20,0,0,0
+Pulkovo 1942(83),4178,7024,26,-121,-78
-Hermannskogel,3906,3,653,-212,449
+S42,4179,7024,28,-121,-77
-Hjorsey 1955,4658,14,-73,46,-86
+EST97,4180,7019,0,0,0
-Hong Kong 1963,4739,14,-156,-271,-189
+Observatorio 1966,4182,7022,-425,-169,81
-Hu-Tzu-Shan,4236,14,-634,-549,-201
+Southwest Base,4183,7022,-104,167,-38
-Indian Bangladesh,4682,6,289,734,257
+Sao Braz,4184,7022,-203,141,53
-Indian Thailand,4240,6,214,836,303
+REGVEN,4189,7019,0,0,0
-Israeli,4281,23,-235,-85,264
+POSGAR 98,4190,7019,0,0,0
-Ireland 1965,4299,1,506,-122,611
+Douala 1948,4192,7022,-206.1,-174.7,-87.7
-ISTS 073 Astro 1969,4724,14,208,-435,-229
+Manoca 1962,4193,7011,-70.9,-151.8,-41.4
-Johnston Island,4725,14,191,-77,-204
+Qornoq 1927,4194,7022,164,138,-189
-Kandawala,4244,6,-97,787,86
+Adindan,4201,7012,-162,-12,206
-Kerguelen Island,4698,14,145,-187,103
+Australian Geodetic 1966,4202,7003,-133,-48,148
-Kertau 1948,4245,7,-11,851,5
+Australian Geodetic 1984,4203,7003,-134,-48,149
-L.C. 5 Astro,4726,4,42,124,147
+Ain el Abd 1970,4204,7022,-150,-251,-2
-Liberia 1964,4251,5,-90,40,88
+Afgooye,4205,7024,-43,-163,45
-Luzon Mindanao,,4,-133,-79,-72
+Lisbon,4207,7022,-304.046,-60.576,103.64
-Luzon Philippines,4253,4,-133,-77,-51
+Aratu,4208,7022,-151.99,287.04,-147.45
-Mahe 1971,4256,5,41,-220,-134
+Arc 1950,4209,7012,-143,-90,-294
-Marco Astro,4616,14,-289,-124,60
+Arc 1960,4210,7012,-160,-8,-300
-Massawa,4262,3,639,405,60
+Djakarta (Batavia),4211,7004,-377,681,-50
-Merchich,4261,5,31,146,47
+Barbados 1938,4212,7012,31.95,300.99,419.19
-Midway Astro 1961,4727,14,912,-58,1227
+Beduaram,4213,7011,-106,-87,188
-Minna,4263,5,-92,-93,122
+Beijing 1954,4214,7024,15.8,-154.4,-82.3
-NAD27 Alaska,,4,-5,135,172
+Bermuda 1957,4216,7008,-73,213,296
-NAD27 Bahamas,,4,-4,154,178
+Bogota Observatory,4218,7022,307,304,-318
-NAD27 Canada,,4,-10,158,187
+Camacupa,4220,7012,-50.9,-347.6,-231
-NAD27 Canal Zone,,4,0,125,201
+Campo Inchauspe,4221,7022,-148,136,90
-NAD27 Caribbean,,4,-7,152,178
+Cape,4222,7012,-136,-108,-292
-NAD27 Central,,4,0,125,194
+Carthage,4223,7012,-263,6,431
-NAD27 CONUS,,4,-8,160,176
+Chua Astro,4224,7022,-134,229,-29
-NAD27 Cuba,,4,-9,152,178
+Corrego Alegre,4225,7022,-206,172,-6
-NAD27 Greenland,,4,11,114,195
+Deir ez Zor,4227,7011,-190.421,8.532,238.69
-NAD27 Mexico,,4,-12,130,190
+Old Egyptian,4229,7020,-130,110,-13
-NAD27 San Salvador,,4,1,140,165
+European 1950,4230,7022,-87,-98,-121
-NAD83,4269,11,0,0,0
+Oman,4232,7012,-346,-1,224
-Nahrwn Masirah Ilnd,,5,-247,-148,369
+Gandajika Base,4233,7022,-133,-321,50
-Nahrwn Saudi Arbia,,5,-231,-196,482
+Hu-Tzu-Shan,4236,7022,-634,-549,-201
-Nahrwn United Arab,,5,-249,-156,381
+ID74,4238,7021,-24,-15,5
-Naparima BWI,4271,14,-2,374,172
+Indian 1954,4239,7015,217,823,299
-NGO1948,4273,27,315,-217,528
+Indian Thailand,4240,7015,214,836,303
-NTF France,4275,24,-168,-60,320
+JAD69,4242,7008,70,207,389.5
-Norsk,4817,27,278,93,474
+Kandawala,4244,7015,-97,787,86
-NZGD1949,4272,14,84,-22,209
+Kertau 1948,4245,7018,-11,851,5
-NZGD2000,4167,20,0,0,0
+KOC,4246,7012,-294.7,-200.1,525.5
-Observatorio 1966,4182,14,-425,-169,81
+La Canoa,4247,7022,-273.5,110.6,-357.9
-Old Egyptian,4229,12,-130,110,-13
+Prov So Amrican 1956,4248,7022,-288,175,-376
-Old Hawaiian,4135,4,61,-285,-181
+Leigon,4250,7012,-130,29,364
-Oman,4232,5,-346,-1,224
+Liberia 1964,4251,7012,-90,40,88
-Ord Srvy Grt Britn,4277,0,375,-111,431
+Luzon Philippines,4253,7008,-133,-77,-51
-Pico De Las Nieves,4728,14,-307,-92,127
+Prov So Chilean 1963,4254,7022,16,196,93
-Pitcairn Astro 1967,4729,14,185,165,42
+Mahe 1971,4256,7012,41,-220,-134
-Potsdam Rauenberg DHDN,4314,3,606,23,413
+ETRS89,4258,7019,0,0,0
-Prov So Amrican 1956,4248,14,-288,175,-376
+Malongo 1987,4259,7022,-254.1,-5.36,-100.29
-Prov So Chilean 1963,4254,14,16,196,93
+Merchich,4261,7012,31,146,47
-Puerto Rico,4139,4,11,72,-101
+Massawa,4262,7004,639,405,60
-Pulkovo 1942 (1),4284,15,28,-130,-95
+Minna,4263,7012,-92,-93,122
-Pulkovo 1942 (2),4284,15,28,-130,-95
+Mhast,4264,7022,-252.95,-4.11,-96.38
-Qatar National,4285,14,-128,-283,22
+M'poraloko,4266,7011,-74,-130,42
-Qornoq,4287,14,164,138,-189
+NAD27 CONUS,4267,7008,-8,160,176
-Reunion,4626,14,94,-948,-1262
+NAD83,4269,7019,0,0,0
-Rijksdriehoeksmeting,4289,3,593,26,478
+Nahrwan 1967,4270,7012,-249,-156,381
-Rome 1940,4806,14,-225,-65,9
+Naparima BWI,4271,7022,-2,374,172
-RT 90,4124,3,498,-36,568
+Geodetic Datum 1949,4272,7022,84,-22,209
-S42,4179,15,28,-121,-77
+NZGD1949,4272,7022,84,-22,209
-Santo (DOS),4730,14,170,42,84
+NGO1948,4273,7005,315,-217,528
-Sao Braz,4184,14,-203,141,53
+Datum 73,4274,7022,-223.237,110.193,36.649
-Sapper Hill 1943,4292,14,-355,16,74
+NTF France,4275,7011,-168,-60,320
-Schwarzeck,4293,21,616,97,-251
+Ord Srvy Grt Britn,4277,7001,375,-111,431
-South American 1969,4291,16,-57,1,-41
+Israeli,4281,7010,-235,-85,264
-South Asia,,8,7,-10,-26
+Pointe Noire,4282,7011,-148,51,-291
-Southeast Base,4615,14,-499,-249,314
+Australian Geocentric 1994 (GDA94),4283,7019,0,0,0
-Southwest Base,4183,14,-104,167,-38
+Pulkovo 1942 (1),4284,7024,28,-130,-95
-Timbalai 1948,4298,6,-689,691,-46
+Qatar National,4285,7022,-128,-283,22
-Tokyo,4301,3,-128,481,664
+Qornoq,4287,7022,164,138,-189
-Tristan Astro 1968,4734,14,-632,438,-609
+Rijksdriehoeksmeting,4289,7004,593,26,478
-Viti Levu 1916,4731,5,51,391,-36
+South American 1969,4291,7036,-57,1,-41
-Wake-Eniwetok 1960,4732,13,101,52,-39
+Sapper Hill 1943,4292,7022,-355,16,74
-WGS 72,4322,19,0,0,5
+Schwarzeck,4293,7046,616,97,-251
-WGS 84,4326,20,0,0,0
+Tananarive,4297,7022,-189,-242,-91
-Yacare,4309,14,-155,171,37
+Timbalai 1948,4298,7015,-689,691,-46
-Zanderij,4311,14,-265,120,-358
+Ireland 1965,4299,7002,506,-122,611
+Tokyo,4301,7004,-128,481,664
+Voirol 1875,4304,7011,-73,-247,227
+Yacare,4309,7022,-155,171,37
+Yoff,4310,7011,-30,190,89
+Zanderij,4311,7022,-265,120,-358
+Austrian,4312,7004,594,84,471
+Potsdam Rauenberg DHDN,4314,7004,606,23,413
+Conakry 1905,4315,7011,-23,259,-9
+NGN,4318,7030,-3.2,-5.7,2.8
+KUDAMS,4319,7019,-20.8,11.3,2.4
+WGS 72,4322,7043,0,0,5
+WGS 84,4326,7030,0,0,0
+RGSPM06,4463,7019,0,0,0
+RGM04,4470,7019,0,0,0
+Cadastre 1997,4475,7022,-381.788,-57.501,-256.673
+Mexico ITRF92,4483,7019,0,0,0
+RRAF 1991,4558,7019,0,0,0
+Antigua 1943,4601,7012,-255,-15,71
+Dominica 1945,4602,7012,725,685,536
+Grenada 1953,4603,7012,72,213.7,93
+Montserrat 1958,4604,7012,174,359,365
+St. Kitts 1955,4605,7012,9,183,236
+St. Lucia 1955,4606,7012,-149,128,296
+St. Vincent 1945,4607,7012,195.671,332.517,274.607
+JGD2000,4612,7019,0,0,0
+Segara,4613,7004,-403,684,41
+Southeast Base,4615,7022,-499,-249,314
+Marco Astro,4616,7022,-289,-124,60
+NAD83(CSRS),4617,7019,0,0,0
+SAD69,4618,7050,-66.87,4.37,-38.52
+SWEREF99,4619,7019,0,0,0
+Fort Marigot,4621,7022,137,248,-430
+Guadeloupe 1948,4622,7022,-467,-16,-300
+CSG67,4623,7022,-186,230,110
+RGFG95,4624,7019,0,0,0
+Martinique 1938,4625,7022,186,482,151
+Reunion,4626,7022,94,-948,-1262
+RGR92,4627,7019,0,0,0
+Tahiti 52,4628,7022,162,117,154
+IGN72 Nuku Hiva,4630,7022,84,274,65
+K0 1949,4631,7022,145,-187,103
+Combani 1950,4632,7022,-382,-59,-262
+IGN56 Lifou,4633,7022,335.47,222.58,-230.94
+IGN72 Grand Terre,4634,7022,-13,-348,292
+Saint Pierre et Miquelon 1950,4638,7008,30,430,368
+MOP78,4639,7022,253,-132,-127
+RRAF 1991,4640,7030,0,0,0
+IGN53 Mare,4641,7022,287.58,177.78,-135.41
+ST84 Ile des Pins,4642,7022,-13,-348,292
+NEA74 Noumea,4644,7022,-10.18,-350.43,291.37
+RGNC 1991,4645,7022,0,0,0
+Grand Comoros,4646,7022,-963,510,-359
+Hjorsey 1955,4658,7022,-73,46,-86
+ISN93,4659,7019,0,0,0
+LKS92,4661,7019,0,0,0
+IGN72 Grande Terre,4662,7022,-11.64,-348.6,291.98
+Porto Santo 1995,4663,7022,-502.862,-247.438,312.724
+Azores Oriental 1995,4664,7022,-204.619,140.176,55.226
+Azores Central 1995,4665,7022,-106.226,166.366,-37.893
+European 1979,4668,7022,-86,-98,-119
+LKS94,4669,7019,0,0,0
+IGM95,4670,7030,0,0,0
+Chatham 1971,4672,7022,175,-38,113
+SIRGAS 2000,4674,7019,0,0,0
+Guam 1963,4675,7008,-100,-248,259
+Indian Bangladesh,4682,7015,289,734,257
+MAGNA-SIRGAS,4686,7019,0,0,0
+Maupiti 83,4692,7022,217.037,86.959,23.956
+Nakhl-e Ghanem,4693,7030,0,-0.15,0.68
+POSGAR 94,4694,7030,0,0,0
+Katanga 1955,4695,7008,-103.746,-9.614,-255.95
+Kerguelen Island,4698,7022,145,-187,103
+Le Pouce 1934,4699,7012,-770.1,158.4,-498.2
+IGCB 1955,4701,7012,-79.9,-158,-168.9
+Mauritania 1999,4702,7019,0,0,0
+Egypt Gulf of Suez S-650 TL,4706,7020,-146.21,112.63,4.05
+Astro B4 Sorol Atoll,4707,7022,114,-116,-333
+Anna 1 Astro 1965,4708,7003,-491,-22,435
+Astro Beacon 1945,4709,7022,145,75,-272
+Astro DOS 71/4,4710,7022,-320,550,-494
+Astronomic Stn 1952,4711,7022,124,-234,-25
+Ascension Island 1958,4712,7022,-207,107,52
+Bellevue (IGN),4714,7022,-127,-769,472
+Canton Astro 1966,4716,7022,298,-304,-375
+Cape Canaveral,4717,7008,-2,150,181
+GUX 1 Astro,4718,7022,252,-209,-751
+Easter Island 1967,4719,7022,211,147,111
+Fiji 1956,4721,7022,265.025,384.929,-194.046
+ISTS 073 Astro 1969,4724,7022,208,-435,-229
+Johnston Island,4725,7022,191,-77,-204
+L.C. 5 Astro,4726,7008,42,124,147
+Midway Astro 1961,4727,7022,912,-58,1227
+Pico De Las Nieves,4728,7022,-307,-92,127
+Pitcairn Astro 1967,4729,7022,185,165,42
+Santo (DOS),4730,7022,170,42,84
+Viti Levu 1916,4731,7012,51,391,-36
+Wake-Eniwetok 1960,4732,7053,101,52,-39
+Tristan Astro 1968,4734,7022,-632,438,-609
+Korea 2000,4737,7019,0,0,0
+Hong Kong 1963,4739,7022,-156,-271,-189
+Karbala 1979,4743,7012,70.995,-335.916,262.898
+Nahrwan 1934,4744,7012,-242.2,-144.9,370.3
+GR96,4747,7019,0,0,0
+RGNC91-93,4749,7019,0,0,0
+ST87 Ouvea,4750,7030,-56.263,16.136,-22.856
+LGD2006,4754,7022,-208.4058,-109.8777,-2.5764
+DGN95,4755,7030,0,0,0
+JAD2001,4758,7030,0,0,0
+NAD83(NSRS2007),4759,7019,0,0,0
+HTRS96,4761,7019,0,0,0
+BDA2000,4762,7030,0,0,0
+Pitcairn 2006,4763,7030,0,0,0
+RSRGD2000,4764,7019,0,0,0
+Slovenia 1996,4765,7019,0,0,0
+Lisbon (Lisbon),4803,7022,-304.046,-60.576,103.64
+MGI (Ferro),4805,7004,682,-203,480
+Rome 1940,4806,7022,-225,-65,9
+NTF (Paris),4807,7011,-168,-60,320
+Norsk,4817,7005,278,93,474
+PTRA08,5013,7019,0,0,0
+TUREF,5252,7019,0,0,0
+DRUKREF 03,5264,7019,0,0,0
+ISN2004,5324,7019,0,0,0
+POSGAR 2007,5340,7019,0,0,0
+MARGEN,5354,7019,0,0,0
+SIRGAS-Chile,5360,7019,0,0,0
+CR05,5365,7030,0,0,0
+Peru96,5373,7019,0,0,0
+SIRGAS-ROU98,5381,7030,0,0,0
+Ocotepeque 1935,5451,7008,205,96,-98
+RGAF09,5489,7019,0,0,0
+SAD69(96),5527,7050,-67.35,3.88,-38.22
+PNG94,5546,7019,0,0,0
+FEH2010,5593,7019,0,0,0
+CIGD11,6135,7019,0,0,0
+Mexico ITRF2008,6365,7019,0,0,0
+RDN2008,6706,7019,0,0,0
+South East Island 1943,6892,7012,-43.685,-179.785,-267.721
+ONGD14,7373,7019,0,0,0
+St. Helena Tritan,7881,7030,-0.077,0.079,0.086
+SHGD2015,7886,7019,0,0,0
+DOS 1968,,7022,230,-199,-752
+Egypt,,7022,-130,-117,-151
+European 1950 (Mean France),,7022,-87,-96,-120
+European 1950 (Spain and Portugal),,7022,-84,-107,-120
+Luzon Mindanao,,7008,-133,-79,-72
+NAD27 Alaska,,7008,-5,135,172
+NAD27 Bahamas,,7008,-4,154,178
+NAD27 Canada,,7008,-10,158,187
+NAD27 Canal Zone,,7008,0,125,201
+NAD27 Caribbean,,7008,-3,142,183
+NAD27 Central,,7008,0,125,194
+NAD27 Cuba,,7008,-9,152,178
+NAD27 Greenland,,7008,11,114,195
+NAD27 Mexico,,7008,-12,130,190
+NAD27 San Salvador,,7008,1,140,165
+Nahrwn Masirah Ilnd,,7012,-247,-148,369
+Nahrwn Saudi Arbia,,7012,-231,-196,482
+Nahrwn United Arab,,7012,-249,-156,381
+Pulkovo 1942 (2),,7024,28,-130,-95

pkg/ellipsoids.csv

@@ -1,30 +1,25 @@
-0,Airy 1830,6377563.396,299.3249646
+Airy 1830,7001,6377563.396,299.3249646
-1,Modified Airy,6377340.189,299.3249646
+Modified Airy,7002,6377340.189,299.3249646
-2,Australian National,6378160.0,298.25 
+Australian National,7003,6378160.0,298.25 
-3,Bessel 1841,6377397.155,299.1528128
+Bessel 1841,7004,6377397.155,299.1528128
-4,Clarke 1866,6378206.4,294.9786982
+Bessel 1841 (Norway),7005,6377492.0176,299.1528
-5,Clarke 1880,6378249.145,293.465
+Clarke 1866,7008,6378206.4,294.9786982
-6,Everest (India 1830),6377276.345,300.8017
+Clarke 1880 (Palestine),7010,6378300.789,293.466
-7,Everest (1948),6377304.063,300.8017
+Clarke 1880 (IGN),7011,6378249.2,293.466021
-8,Modified Fischer 1960,6378155.0,298.3
+Clarke 1880,7012,6378249.145,293.465
-9,Everest (Pakistan),6377309.613,300.8017
+Everest 1830 (1937 Adjustment),7015,6377276.345,300.8017
-10,Indonesian 1974,6378160.0,298.247
+Everest 1830 Modified,7018,6377304.063,300.8017
-11,GRS 80,6378137.0,298.257222101
+GRS 80,7019,6378137.0,298.257222101
-12,Helmert 1906,6378200.0,298.3
+Helmert 1906,7020,6378200.0,298.3
-13,Hough 1960,6378270.0,297.0
+Indonesian,7021,6378160.0,298.247
-14,International 1924,6378388.0,297.0
+International 1924,7022,6378388.0,297.0
-15,Krassovsky 1940,6378245.0,298.3
+Krassovsky 1940,7024,6378245.0,298.3
-16,South American 1969,6378160.0,298.25
+War Office,7029,6378300.0,296.0
-17,Everest (Malaysia 1969),6377295.664,300.8017
+WGS 84,7030,6378137.0,298.257223563
-18,Everest (Sabah Sarawak),6377298.556,300.8017
+South American 1969,7036,6378160.0,298.25
-19,WGS 72,6378135.0,298.26
+WGS 72,7043,6378135.0,298.26
-20,WGS 84,6378137.0,298.257223563
+Everest 1830 (1962 Definition),7044,6377301.243,300.8017255
-21,Bessel 1841 (Namibia),6377483.865,299.1528128
+Everest 1830 (1975 Definition),7045,6377299.151,300.8017255
-22,Everest (India 1956),6377301.243,300.8017
+Bessel 1841 (Namibia),7046,6377483.865,299.1528128
-23,Clarke 1880 Palestine,6378300.789,293.466 
+GRS 67 Modified,7050,6378160.0,298.25
-24,Clarke 1880 IGN,6378249.2,293.466021
+Hough 1960,7053,6378270.0,297.0
-25,Hayford 1909,6378388.0,296.959263
-26,Clarke 1858,6378350.87,294.26
-27,Bessel 1841 (Norway),6377492.0176,299.1528
-28,Plessis 1817 (France),6376523.0,308.6409971
-29,Hayford 1924,6378388.0,297.0

pkg/gpxsee.nsi

@@ -5,7 +5,7 @@
 ; The name of the installer
 Name "GPXSee"
 ; Program version
-!define VERSION "4.17"
+!define VERSION "5.0"
 
 ; The file to write
 OutFile "GPXSee-${VERSION}.exe"
@@ -86,6 +86,7 @@ Section "GPXSee" SEC_APP
   File "maps.txt"
   File "ellipsoids.csv"
   File "datums.csv"
+  File "pcs.csv"
 
   ; Create start menu entry and add links
   SetShellVarContext all

pkg/gpxsee64.nsi

@@ -5,7 +5,7 @@
 ; The name of the installer
 Name "GPXSee"
 ; Program version
-!define VERSION "4.17"
+!define VERSION "5.0"
 
 ; The file to write
 OutFile "GPXSee-${VERSION}_x64.exe"
@@ -93,6 +93,7 @@ Section "GPXSee" SEC_APP
   File "maps.txt"
   File "ellipsoids.csv"
   File "datums.csv"
+  File "pcs.csv"
   
   ; Create start menu entry and add links
   SetShellVarContext all

src/GUI/app.cpp

@@ -8,6 +8,7 @@
 #include "map/downloader.h"
 #include "map/ellipsoid.h"
 #include "map/datum.h"
+#include "map/pcs.h"
 #include "opengl.h"
 #include "gui.h"
 #include "config.h"
@@ -35,6 +36,7 @@ App::App(int &argc, char **argv) : QApplication(argc, argv),
 	OnlineMap::setDownloader(new Downloader(this));
 	OPENGL_SET_SAMPLES(4);
 	loadDatums();
+	loadPCSs();
 
 	_gui = new GUI();
 }
@@ -107,3 +109,26 @@ void App::loadDatums()
 	if (!ok)
 		qWarning("Maps based on a datum different from WGS84 won't work.");
 }
+
+void App::loadPCSs()
+{
+	QString file;
+
+	if (QFile::exists(USER_PCS_FILE))
+		file = USER_PCS_FILE;
+	else if (QFile::exists(GLOBAL_PCS_FILE))
+		file = GLOBAL_PCS_FILE;
+	else {
+		qWarning("No PCS file found.");
+		return;
+	}
+
+	if (!PCS::loadList(file)) {
+		if (PCS::errorLine())
+			qWarning("%s: parse error on line %d: %s", qPrintable(file),
+			  PCS::errorLine(), qPrintable(PCS::errorString()));
+		else
+			qWarning("%s: %s", qPrintable(file), qPrintable(
+			  Datum::errorString()));
+	}
+}

src/GUI/app.h

@@ -19,6 +19,7 @@ protected:
 
 private:
 	void loadDatums();
+	void loadPCSs();
 
 	int &_argc;
 	char **_argv;

src/GUI/mapview.cpp

@@ -566,6 +566,9 @@ void MapView::clear()
 	_wr = RectC();
 
 	digitalZoom(0);
+
+	// If not reset, causes huge redraw areas (and system memory exhaustion)
+	resetCachedContent();
 }
 
 void MapView::showTracks(bool show)

src/config.h

@@ -14,6 +14,7 @@
 
 #define ELLIPSOID_FILE  QString("ellipsoids.csv")
 #define DATUM_FILE      QString("datums.csv")
+#define PCS_FILE        QString("pcs.csv")
 #define MAP_FILE        QString("maps.txt")
 #define MAP_DIR         QString("maps")
 #define POI_DIR         QString("POI")
@@ -32,11 +33,13 @@
 
 #define USER_ELLIPSOID_FILE    USER_DIR + QString("/") + ELLIPSOID_FILE
 #define USER_DATUM_FILE        USER_DIR + QString("/") + DATUM_FILE
+#define USER_PCS_FILE          USER_DIR + QString("/") + PCS_FILE
 #define USER_MAP_DIR           USER_DIR + QString("/") + MAP_DIR
 #define USER_MAP_FILE          USER_DIR + QString("/") + MAP_FILE
 #define USER_POI_DIR           USER_DIR + QString("/") + POI_DIR
 #define GLOBAL_ELLIPSOID_FILE  GLOBAL_DIR + QString("/") + ELLIPSOID_FILE
 #define GLOBAL_DATUM_FILE      GLOBAL_DIR + QString("/") + DATUM_FILE
+#define GLOBAL_PCS_FILE        GLOBAL_DIR + QString("/") + PCS_FILE
 #define GLOBAL_MAP_DIR         GLOBAL_DIR + QString("/") + MAP_DIR
 #define GLOBAL_MAP_FILE        GLOBAL_DIR + QString("/") + MAP_FILE
 #define GLOBAL_POI_DIR         GLOBAL_DIR + QString("/") + POI_DIR

src/data/csvparser.h

@@ -7,7 +7,6 @@ class CSVParser : public Parser
 {
 public:
 	CSVParser() : _errorLine(0) {}
-	~CSVParser() {}
 
 	bool parse(QFile *file, QList<TrackData> &track, QList<RouteData> &routes,
 	  QList<Waypoint> &waypoints);

src/data/fitparser.h

@@ -7,7 +7,6 @@ class FITParser : public Parser
 {
 public:
 	FITParser();
-	~FITParser() {}
 
 	bool parse(QFile *file, QList<TrackData> &tracks, QList<RouteData> &routes,
 	  QList<Waypoint> &waypoints);

src/data/gpxparser.h

@@ -8,8 +8,6 @@
 class GPXParser : public Parser
 {
 public:
-	~GPXParser() {}
-
 	bool parse(QFile *file, QList<TrackData> &tracks,
 	  QList<RouteData> &routes, QList<Waypoint> &waypoints);
 	QString errorString() const {return _reader.errorString();}

src/data/igcparser.h

@@ -10,7 +10,6 @@ class IGCParser : public Parser
 {
 public:
 	IGCParser() : _errorLine(0) {}
-	~IGCParser() {}
 
 	bool parse(QFile *file, QList<TrackData> &tracks,
 	  QList<RouteData> &routes, QList<Waypoint> &waypoints);

src/data/kmlparser.h

@@ -8,8 +8,6 @@
 class KMLParser : public Parser
 {
 public:
-	~KMLParser() {}
-
 	bool parse(QFile *file, QList<TrackData> &tracks,
 	  QList<RouteData> &routes, QList<Waypoint> &waypoints);
 	QString errorString() const {return _reader.errorString();}

src/data/nmeaparser.h

@@ -9,7 +9,6 @@ class NMEAParser : public Parser
 {
 public:
 	NMEAParser() : _errorLine(0), _GGA(false) {}
-	~NMEAParser() {}
 
 	bool parse(QFile *file, QList<TrackData> &tracks,
 	  QList<RouteData> &routes, QList<Waypoint> &waypoints);

src/data/tcxparser.h

@@ -8,8 +8,6 @@
 class TCXParser : public Parser
 {
 public:
-	~TCXParser() {}
-
 	bool parse(QFile *file, QList<TrackData> &tracks,
 	  QList<RouteData> &routes, QList<Waypoint> &waypoints);
 	QString errorString() const {return _reader.errorString();}

src/map/datum.cpp

@@ -4,26 +4,103 @@
 #include "datum.h"
 
 
-static QMap<QString, Datum> WGS84()
+class Datum::Entry {
+public:
+	Entry(const QString &name, int epsg, const Datum &datum)
+	  : _name(name), _epsg(epsg), _datum(datum) {}
+
+	const QString &name() const {return _name;}
+	int epsg() const {return _epsg;}
+	const Datum &datum() const {return _datum;}
+
+private:
+	QString _name;
+	int _epsg;
+	Datum _datum;
+};
+
+
+// Abridged Molodensky transformation
+static Coordinates molodensky(const Coordinates &c, const Datum &from,
+  const Datum &to)
 {
-	QMap<QString, Datum> map;
+	double rlat = deg2rad(c.lat());
-	map.insert("WGS 84", Datum(Ellipsoid(WGS84_RADIUS, WGS84_FLATTENING),
+	double rlon = deg2rad(c.lon());
-	  0.0, 0.0, 0.0));
+
-	return map;
+	double slat = sin(rlat);
+	double clat = cos(rlat);
+	double slon = sin(rlon);
+	double clon = cos(rlon);
+	double ssqlat = slat * slat;
+
+	double dx = from.dx() - to.dx();
+	double dy = from.dy() - to.dy();
+	double dz = from.dz() - to.dz();
+
+	double from_f = from.ellipsoid().flattening();
+	double to_f = to.ellipsoid().flattening();
+	double df = to_f - from_f;
+	double from_a = from.ellipsoid().radius();
+	double to_a = to.ellipsoid().radius();
+	double da = to_a - from_a;
+	double from_esq = from_f * (2.0 - from_f);
+	double adb = 1.0 / (1.0 - from_f);
+	double rn = from_a / sqrt(1 - from_esq * ssqlat);
+	double rm = from_a * (1 - from_esq) / pow((1 - from_esq * ssqlat), 1.5);
+	double from_h = 0.0;
+
+	double dlat = (-dx * slat * clon - dy * slat * slon + dz * clat + da
+	  * rn * from_esq * slat * clat / from_a + df * (rm * adb + rn / adb) * slat
+	  * clat) / (rm + from_h);
+
+	double dlon = (-dx * slon + dy * clon) / ((rn + from_h) * clat);
+
+	return Coordinates(c.lon() + rad2deg(dlon), c.lat() + rad2deg(dlat));
 }
 
-QMap<QString, Datum> Datum::_datums = WGS84();
+QList<Datum::Entry> Datum::_datums = WGS84();
 QString Datum::_errorString;
 int Datum::_errorLine = 0;
 
-Datum Datum::datum(const QString &name)
+QList<Datum::Entry> Datum::WGS84()
 {
-	QMap<QString, Datum>::const_iterator it = _datums.find(name);
+	QList<Datum::Entry> list;
+	list.append(Datum::Entry("WGS 84", 4326,
+	  Datum(Ellipsoid(WGS84_RADIUS, WGS84_FLATTENING), 0.0, 0.0, 0.0)));
+	return list;
+}
 
-	if (it == _datums.end())
+Datum::Datum(const Ellipsoid &ellipsoid, double dx, double dy, double dz)
-		return Datum();
+  : _ellipsoid(ellipsoid), _dx(dx), _dy(dy), _dz(dz)
+{
+	_WGS84 = (_ellipsoid.radius() == WGS84_RADIUS
+	  && _ellipsoid.flattening() == WGS84_FLATTENING
+	  && _dx == 0.0 && _dy == 0.0 && _dz == 0.0)
+		? true : false;
+}
 
-	return it.value();
+Datum::Datum(int id)
+{
+	for (int i = 0; i < _datums.size(); i++) {
+		if (_datums.at(i).epsg() == id) {
+			*this = _datums.at(i).datum();
+			return;
+		}
+	}
+
+	*this = Datum();
+}
+
+Datum::Datum(const QString &name)
+{
+	for (int i = 0; i < _datums.size(); i++) {
+		if (_datums.at(i).name() == name) {
+			*this = _datums.at(i).datum();
+			return;
+		}
+	}
+
+	*this = Datum();
 }
 
 bool Datum::loadList(const QString &path)
@@ -47,6 +124,15 @@ bool Datum::loadList(const QString &path)
 			return false;
 		}
 
+		QString f1 = list[1].trimmed();
+		int id = 0;
+		if (!f1.isEmpty()) {
+			id = f1.toInt(&res);
+			if (!res) {
+				_errorString = "Invalid datum id";
+				return false;
+			}
+		}
 		int eid = list[2].trimmed().toInt(&res);
 		if (!res) {
 			_errorString = "Invalid ellipsoid id";
@@ -68,14 +154,14 @@ bool Datum::loadList(const QString &path)
 			return false;
 		}
 
-		Ellipsoid e = Ellipsoid::ellipsoid(eid);
+		Ellipsoid e(eid);
 		if (e.isNull()) {
 			_errorString = "Unknown ellipsoid ID";
 			return false;
 		}
 
 		Datum d(e, dx, dy, dz);
-		_datums.insert(list[0].trimmed(), d);
+		_datums.append(Entry(list[0].trimmed(), id, d));
 
 		_errorLine++;
 	}
@@ -83,38 +169,21 @@ bool Datum::loadList(const QString &path)
 	return true;
 }
 
-// Abridged Molodensky transformation
 Coordinates Datum::toWGS84(const Coordinates &c) const
 {
-	if (_ellipsoid.radius() == WGS84_RADIUS
+	return _WGS84 ? c : molodensky(c, *this, Datum(Ellipsoid(WGS84_RADIUS,
-	  && _ellipsoid.flattening() == WGS84_FLATTENING
+	  WGS84_FLATTENING), 0.0, 0.0, 0.0));
-	  && _dx == 0.0 && _dy == 0.0 && _dz == 0.0)
+}
-		return c;
+
-
+Coordinates Datum::fromWGS84(const Coordinates &c) const
-	double rlat = deg2rad(c.lat());
+{
-	double rlon = deg2rad(c.lon());
+	return _WGS84 ? c : molodensky(c, Datum(Ellipsoid(WGS84_RADIUS,
-
+	  WGS84_FLATTENING), 0.0, 0.0, 0.0), *this);
-	double slat = sin(rlat);
+}
-	double clat = cos(rlat);
+
-	double slon = sin(rlon);
+QDebug operator<<(QDebug dbg, const Datum &datum)
-	double clon = cos(rlon);
+{
-	double ssqlat = slat * slat;
+	dbg.nospace() << "Datum(" << datum.ellipsoid() << ", " << datum.dx() << ", "
-
+	  << datum.dy() << ", " << datum.dz() << ")";
-	double from_f = ellipsoid().flattening();
+	return dbg.space();
-	double df = WGS84_FLATTENING - from_f;
-	double from_a = ellipsoid().radius();
-	double da = WGS84_RADIUS - from_a;
-	double from_esq = ellipsoid().flattening()
-	  * (2.0 - ellipsoid().flattening());
-	double adb = 1.0 / (1.0 - from_f);
-	double rn = from_a / sqrt(1 - from_esq * ssqlat);
-	double rm = from_a * (1 - from_esq) / pow((1 - from_esq * ssqlat), 1.5);
-	double from_h = 0.0;
-
-	double dlat = (-dx() * slat * clon - dy() * slat * slon + dz() * clat + da
-	  * rn * from_esq * slat * clat / from_a + df * (rm * adb + rn / adb) * slat
-	  * clat) / (rm + from_h);
-	double dlon = (-dx() * slon + dy() * clon) / ((rn + from_h) * clat);
-
-	return Coordinates(c.lon() + rad2deg(dlon), c.lat() + rad2deg(dlat));
 }

src/map/datum.h

@@ -1,16 +1,20 @@
 #ifndef DATUM_H
 #define DATUM_H
 
-#include <QMap>
+#include <cmath>
+#include <QList>
+#include <QDebug>
 #include "ellipsoid.h"
 #include "common/coordinates.h"
 
 class Datum
 {
 public:
-	Datum() : _ellipsoid(Ellipsoid()), _dx(0.0), _dy(0.0), _dz(0.0) {}
+	Datum() : _ellipsoid(Ellipsoid()), _dx(NAN), _dy(NAN), _dz(NAN),
-	Datum(const Ellipsoid &ellipsoid, double dx, double dy, double dz)
+	  _WGS84(false) {}
-	  : _ellipsoid(ellipsoid), _dx(dx), _dy(dy), _dz(dz) {}
+	Datum(const Ellipsoid &ellipsoid, double dx, double dy, double dz);
+	Datum(const QString &name);
+	Datum(int id);
 
 	const Ellipsoid &ellipsoid() const {return _ellipsoid;}
 	double dx() const {return _dx;}
@@ -18,23 +22,30 @@ public:
 	double dz() const {return _dz;}
 
 	bool isNull() const
-	  {return (_ellipsoid.isNull() && _dx == 0.0 && _dy == 0.0 && _dz == 0.0);}
+	  {return (_ellipsoid.isNull() && std::isnan(_dx) && std::isnan(_dy)
+	    && std::isnan(_dz));}
 
 	Coordinates toWGS84(const Coordinates &c) const;
+	Coordinates fromWGS84(const Coordinates &c) const;
 
 	static bool loadList(const QString &path);
 	static const QString &errorString() {return _errorString;}
 	static int errorLine() {return _errorLine;}
 
-	static Datum datum(const QString &name);
-
 private:
+	class Entry;
+
+	static QList<Entry> WGS84();
+
 	Ellipsoid _ellipsoid;
 	double _dx, _dy, _dz;
+	bool _WGS84;
 
-	static QMap<QString, Datum> _datums;
+	static QList<Entry> _datums;
 	static QString _errorString;
 	static int _errorLine;
 };
 
+QDebug operator<<(QDebug dbg, const Datum &datum);
+
 #endif // DATUM_H

src/map/ellipsoid.cpp

@@ -1,18 +1,19 @@
 #include <QFile>
+#include <QDebug>
 #include "ellipsoid.h"
 
 QMap<int, Ellipsoid> Ellipsoid::_ellipsoids;
 QString Ellipsoid::_errorString;
 int Ellipsoid::_errorLine = 0;
 
-Ellipsoid Ellipsoid::ellipsoid(int id)
+Ellipsoid::Ellipsoid(int id)
 {
 	QMap<int, Ellipsoid>::const_iterator it = _ellipsoids.find(id);
 
 	if (it == _ellipsoids.end())
-		return Ellipsoid();
+		*this = Ellipsoid();
-
+	else
-	return it.value();
+		*this = it.value();
 }
 
 bool Ellipsoid::loadList(const QString &path)
@@ -20,6 +21,7 @@ bool Ellipsoid::loadList(const QString &path)
 	QFile file(path);
 	bool res;
 
+
 	if (!file.open(QFile::ReadOnly)) {
 		_errorString = qPrintable(file.errorString());
 		return false;
@@ -36,7 +38,7 @@ bool Ellipsoid::loadList(const QString &path)
 			return false;
 		}
 
-		int id = list[0].trimmed().toInt(&res);
+		int id = list[1].trimmed().toInt(&res);
 		if (!res) {
 			_errorString = "Invalid ellipsoid id";
 			return false;
@@ -60,3 +62,10 @@ bool Ellipsoid::loadList(const QString &path)
 
 	return true;
 }
+
+QDebug operator<<(QDebug dbg, const Ellipsoid &ellipsoid)
+{
+	dbg.nospace() << "Ellipsoid(" << ellipsoid.radius() << ", "
+	  << 1.0 / ellipsoid.flattening() << ")";
+	return dbg.space();
+}

src/map/ellipsoid.h

@@ -1,27 +1,29 @@
 #ifndef ELLIPSOID_H
 #define ELLIPSOID_H
 
+#include <cmath>
 #include <QString>
 #include <QMap>
+#include <QDebug>
 
 class Ellipsoid
 {
 public:
-	Ellipsoid() : _radius(0.0), _flattening(0.0) {}
+	Ellipsoid() : _radius(NAN), _flattening(NAN) {}
 	Ellipsoid(double radius, double flattening)
 	  : _radius(radius), _flattening(flattening) {}
+	Ellipsoid(int id);
 
 	double radius() const {return _radius;}
 	double flattening() const {return _flattening;}
 
-	bool isNull() const {return (_radius == 0.0 && _flattening == 0.0);}
+	bool isNull() const
+	  {return (std::isnan(_radius) && std::isnan(_flattening));}
 
 	static bool loadList(const QString &path);
 	static const QString &errorString() {return _errorString;}
 	static int errorLine() {return _errorLine;}
 
-	static Ellipsoid ellipsoid(int id);
-
 private:
 	double _radius;
 	double _flattening;
@@ -31,4 +33,6 @@ private:
 	static int _errorLine;
 };
 
+QDebug operator<<(QDebug dbg, const Ellipsoid &ellipsoid);
+
 #endif // ELLIPSOID_H

src/map/geotiff.cpp

@@ -0,0 +1,457 @@
+#include <QFileInfo>
+#include <QtEndian>
+#include "pcs.h"
+#include "latlon.h"
+#include "geotiff.h"
+
+
+#define TIFF_DOUBLE 12
+#define TIFF_SHORT  3
+#define TIFF_LONG   4
+
+#define ModelPixelScaleTag         33550
+#define ModelTiepointTag           33922
+#define ModelTransformationTag     34264
+#define GeoKeyDirectoryTag         34735
+#define GeoDoubleParamsTag         34736
+#define ImageWidth                 256
+#define ImageHeight                257
+
+#define GTModelTypeGeoKey          1024
+#define GTRasterTypeGeoKey         1025
+#define GeographicTypeGeoKey       2048
+#define GeogGeodeticDatumGeoKey    2050
+#define GeogEllipsoidGeoKey        2056
+#define ProjectedCSTypeGeoKey      3072
+#define ProjectionGeoKey           3074
+#define ProjCoordTransGeoKey       3075
+#define ProjStdParallel1GeoKey     3078
+#define ProjStdParallel2GeoKey     3079
+#define ProjNatOriginLongGeoKey    3080
+#define ProjNatOriginLatGeoKey     3081
+#define ProjFalseEastingGeoKey     3082
+#define ProjFalseNorthingGeoKey    3083
+#define ProjScaleAtNatOriginGeoKey 3092
+
+#define ModelTypeProjected         1
+#define ModelTypeGeographic        2
+#define ModelTypeGeocentric        3
+
+#define IS_SET(map, key) \
+	((map).contains(key) && (map).value(key).SHORT != 32767)
+
+#define ARRAY_SIZE(a) \
+	(sizeof(a) / sizeof(*a))
+
+typedef struct {
+	quint16 KeyDirectoryVersion;
+	quint16 KeyRevision;
+	quint16 MinorRevision;
+	quint16 NumberOfKeys;
+} Header;
+
+typedef struct {
+	quint16 KeyID;
+	quint16 TIFFTagLocation;
+	quint16 Count;
+	quint16 ValueOffset;
+} KeyEntry;
+
+
+bool GeoTIFF::readEntry(TIFFFile &file, Ctx &ctx)
+{
+	quint16 tag;
+	quint16 type;
+	quint32 count, offset;
+
+	if (!file.readValue(tag))
+		return false;
+	if (!file.readValue(type))
+		return false;
+	if (!file.readValue(count))
+		return false;
+	if (!file.readValue(offset))
+		return false;
+
+	switch (tag) {
+		case ImageWidth:
+			if (!(type == TIFF_SHORT || type == TIFF_LONG))
+				return false;
+			_size.setWidth(offset);
+			break;
+		case ImageHeight:
+			if (!(type == TIFF_SHORT || type == TIFF_LONG))
+				return false;
+			_size.setHeight(offset);
+			break;
+
+		case ModelPixelScaleTag:
+			if (type != TIFF_DOUBLE || count != 3)
+				return false;
+			ctx.scale = offset;
+			break;
+		case ModelTiepointTag:
+			if (type != TIFF_DOUBLE || count < 6 || count % 6)
+				return false;
+			ctx.tiepoints = offset;
+			ctx.tiepointCount = count / 6;
+			break;
+		case GeoKeyDirectoryTag:
+			if (type != TIFF_SHORT)
+				return false;
+			ctx.keys = offset;
+			break;
+		case GeoDoubleParamsTag:
+			if (type != TIFF_DOUBLE)
+				return false;
+			ctx.values = offset;
+			break;
+		case ModelTransformationTag:
+			if (type != TIFF_DOUBLE || count != 16)
+				return false;
+			ctx.matrix = offset;
+			break;
+	}
+
+	return true;
+}
+
+bool GeoTIFF::readIFD(TIFFFile &file, quint32 &offset, Ctx &ctx)
+{
+	quint16 count;
+
+	if (!file.seek(offset))
+		return false;
+	if (!file.readValue(count))
+		return false;
+
+	for (quint16 i = 0; i < count; i++)
+		if (!readEntry(file, ctx))
+			return false;
+
+	if (!file.readValue(offset))
+		return false;
+
+	return true;
+}
+
+bool GeoTIFF::readScale(TIFFFile &file, quint32 offset, QPointF &scale)
+{
+	if (!file.seek(offset))
+		return false;
+
+	if (!file.readValue(scale.rx()))
+		return false;
+	if (!file.readValue(scale.ry()))
+		return false;
+
+	return true;
+}
+
+bool GeoTIFF::readTiepoints(TIFFFile &file, quint32 offset, quint32 count,
+  QList<ReferencePoint> &points)
+{
+	double z, pz;
+	QPointF xy, pp;
+
+	if (!file.seek(offset))
+		return false;
+
+	for (quint32 i = 0; i < count; i++) {
+		if (!file.readValue(xy.rx()))
+			return false;
+		if (!file.readValue(xy.ry()))
+			return false;
+		if (!file.readValue(z))
+			return false;
+
+		if (!file.readValue(pp.rx()))
+			return false;
+		if (!file.readValue(pp.ry()))
+			return false;
+		if (!file.readValue(pz))
+			return false;
+
+		ReferencePoint p;
+		p.xy = xy.toPoint();
+		p.pp = pp;
+		points.append(p);
+	}
+
+	return true;
+}
+
+bool GeoTIFF::readKeys(TIFFFile &file, Ctx &ctx, QMap<quint16, Value> &kv)
+{
+	Header header;
+	KeyEntry entry;
+	Value value;
+
+	if (!file.seek(ctx.keys))
+		return false;
+
+	if (!file.readValue(header.KeyDirectoryVersion))
+		return false;
+	if (!file.readValue(header.KeyRevision))
+		return false;
+	if (!file.readValue(header.MinorRevision))
+		return false;
+	if (!file.readValue(header.NumberOfKeys))
+		return false;
+
+	for (int i = 0; i < header.NumberOfKeys; i++) {
+		if (!file.readValue(entry.KeyID))
+			return false;
+		if (!file.readValue(entry.TIFFTagLocation))
+			return false;
+		if (!file.readValue(entry.Count))
+			return false;
+		if (!file.readValue(entry.ValueOffset))
+			return false;
+
+		switch (entry.KeyID) {
+			case GeographicTypeGeoKey:
+			case ProjectedCSTypeGeoKey:
+			case ProjCoordTransGeoKey:
+			case GTModelTypeGeoKey:
+			case GTRasterTypeGeoKey:
+			case GeogGeodeticDatumGeoKey:
+			case ProjectionGeoKey:
+			case GeogEllipsoidGeoKey:
+				if (entry.TIFFTagLocation != 0 || entry.Count != 1)
+					return false;
+				value.SHORT = entry.ValueOffset;
+				kv.insert(entry.KeyID, value);
+				break;
+			case ProjScaleAtNatOriginGeoKey:
+			case ProjNatOriginLongGeoKey:
+			case ProjNatOriginLatGeoKey:
+			case ProjFalseEastingGeoKey:
+			case ProjFalseNorthingGeoKey:
+			case ProjStdParallel1GeoKey:
+			case ProjStdParallel2GeoKey:
+				if (!readGeoValue(file, ctx.values, entry.ValueOffset,
+				  value.DOUBLE))
+					return false;
+				kv.insert(entry.KeyID, value);
+				break;
+			default:
+				break;
+		}
+	}
+
+	return true;
+}
+
+bool GeoTIFF::readGeoValue(TIFFFile &file, quint32 offset, quint16 index,
+  double &val)
+{
+	qint64 pos = file.pos();
+
+	if (!file.seek(offset + index * sizeof(double)))
+		return false;
+	if (!file.readValue(val))
+		return false;
+
+	if (!file.seek(pos))
+		return false;
+
+	return true;
+}
+
+Datum GeoTIFF::datum(QMap<quint16, Value> &kv)
+{
+	Datum datum;
+
+	if (IS_SET(kv, GeographicTypeGeoKey)) {
+		datum = Datum(kv.value(GeographicTypeGeoKey).SHORT);
+		if (datum.isNull())
+			_errorString = QString("%1: unknown GCS")
+			  .arg(kv.value(GeographicTypeGeoKey).SHORT);
+	} else if (IS_SET(kv, GeogGeodeticDatumGeoKey)) {
+		datum = Datum(kv.value(GeogGeodeticDatumGeoKey).SHORT - 2000);
+		if (datum.isNull())
+			_errorString = QString("%1: unknown geodetic datum")
+			  .arg(kv.value(GeogGeodeticDatumGeoKey).SHORT);
+	} else if (IS_SET(kv, GeogEllipsoidGeoKey)
+	  && kv.value(GeogEllipsoidGeoKey).SHORT == 7019) {
+		datum = Datum(4326);
+	} else
+		_errorString = "Missing datum";
+
+	return datum;
+}
+
+Projection::Method GeoTIFF::method(QMap<quint16, Value> &kv)
+{
+	int epsg;
+	int table[] = {0, 9807, 0, 0, 0, 0, 0, 1024, 9801, 9802, 9820,
+	  9822};
+
+	if (!IS_SET(kv, ProjCoordTransGeoKey)) {
+		_errorString = "Missing coordinate transformation method";
+		return false;
+	}
+
+	quint16 index = kv.value(ProjCoordTransGeoKey).SHORT;
+	epsg = (index >= ARRAY_SIZE(table)) ? 0 : table[index];
+
+	if (!epsg) {
+		_errorString = QString("Unknown coordinate transformation method");
+		return false;
+	}
+
+	return Projection::Method(epsg);
+}
+
+bool GeoTIFF::projectedModel(QMap<quint16, Value> &kv)
+{
+	PCS pcs;
+
+	if (IS_SET(kv, ProjectedCSTypeGeoKey)) {
+		pcs = PCS(kv.value(ProjectedCSTypeGeoKey).SHORT);
+		if (pcs.isNull())
+			_errorString = QString("%1: unknown PCS")
+			  .arg(kv.value(ProjectedCSTypeGeoKey).SHORT);
+	} else if (IS_SET(kv, GeographicTypeGeoKey)
+	  && IS_SET(kv, ProjectionGeoKey)) {
+		pcs = PCS(kv.value(GeographicTypeGeoKey).SHORT,
+		  kv.value(ProjectionGeoKey).SHORT);
+		if (pcs.isNull())
+			_errorString = QString("%1+%2: unknown GCS+projection combination")
+			  .arg(kv.value(GeographicTypeGeoKey).SHORT)
+			  .arg(kv.value(ProjectionGeoKey).SHORT);
+	} else {
+		Datum d = datum(kv);
+		if (d.isNull())
+			return false;
+		Projection::Method m = method(kv);
+		if (m.isNull())
+			return false;
+
+		Projection::Setup setup(
+		  kv.value(ProjNatOriginLatGeoKey).DOUBLE,
+		  kv.value(ProjNatOriginLongGeoKey).DOUBLE,
+		  kv.value(ProjScaleAtNatOriginGeoKey).DOUBLE,
+		  kv.value(ProjFalseEastingGeoKey).DOUBLE,
+		  kv.value(ProjFalseNorthingGeoKey).DOUBLE,
+		  kv.value(ProjStdParallel1GeoKey).DOUBLE,
+		  kv.value(ProjStdParallel2GeoKey).DOUBLE
+		);
+
+		pcs = PCS(d, m, setup);
+	}
+
+	_datum = pcs.datum();
+	_projection = Projection::projection(pcs.datum(), pcs.method(),
+	  pcs.setup());
+
+	return true;
+}
+
+bool GeoTIFF::geographicModel(QMap<quint16, Value> &kv)
+{
+	_datum = datum(kv);
+	if (_datum.isNull())
+		return false;
+
+	_projection = new LatLon();
+
+	return true;
+}
+
+bool GeoTIFF::load(const QString &path)
+{
+	quint32 ifd;
+	QList<ReferencePoint> points;
+	QPointF scale;
+	QMap<quint16, Value> kv;
+	Ctx ctx;
+	TIFFFile file;
+
+
+	file.setFileName(path);
+	if (!file.open(QIODevice::ReadOnly)) {
+		_errorString = QString("Error opening TIFF file: %1")
+		  .arg(file.errorString());
+		return false;
+	}
+	if (!file.readHeader(ifd)) {
+		_errorString = "Invalid TIFF header";
+		return false;
+	}
+
+	while (ifd) {
+		if (!readIFD(file, ifd, ctx)) {
+			_errorString = "Invalid IFD";
+			return false;
+		}
+	}
+
+	if (!_size.isValid()) {
+		_errorString = "Invalid/missing image size";
+		return false;
+	}
+	if (!ctx.keys) {
+		_errorString = "Not a GeoTIFF file";
+		return false;
+	}
+
+	if (ctx.scale) {
+		if (!readScale(file, ctx.scale, scale)) {
+			_errorString = "Error reading model pixel scale";
+			return false;
+		}
+	}
+	if (ctx.tiepoints) {
+		if (!readTiepoints(file, ctx.tiepoints, ctx.tiepointCount, points)) {
+			_errorString = "Error reading raster->model tiepoint pairs";
+			return false;
+		}
+	}
+
+	if (!readKeys(file, ctx, kv)) {
+		_errorString = "Error reading Geo key/value";
+		return false;
+	}
+
+	switch (kv.value(GTModelTypeGeoKey).SHORT) {
+		case ModelTypeProjected:
+			if (!projectedModel(kv))
+				return false;
+			break;
+		case ModelTypeGeographic:
+			if (!geographicModel(kv))
+				return false;
+			break;
+		case ModelTypeGeocentric:
+			_errorString = "TODO ModelTypeGeocentric";
+			return false;
+		default:
+			_errorString = "Unknown/missing model type";
+			return false;
+	}
+
+	if (ctx.scale && ctx.tiepoints)
+		_transform = QTransform(scale.x(), 0, 0, -scale.y(),
+		  points.first().pp.x(), points.first().pp.y()).inverted();
+	else if (ctx.tiepointCount > 1) {
+		Transform t(points);
+		if (t.isNull()) {
+			_errorString = t.errorString();
+			return false;
+		}
+		_transform = t.transform();
+	} else if (ctx.matrix) {
+		_errorString = "TODO ModelTransformationTag";
+		return false;
+	} else {
+		_errorString = "Incomplete/missing model transformation info";
+		return false;
+	}
+
+	QFileInfo fi(path);
+	_name = fi.fileName();
+
+	return true;
+}

src/map/geotiff.h

@@ -0,0 +1,69 @@
+#ifndef GEOTIFF_H
+#define GEOTIFF_H
+
+#include <QTransform>
+#include <QFile>
+#include <QMap>
+#include "datum.h"
+#include "projection.h"
+#include "tifffile.h"
+#include "transform.h"
+
+class GeoTIFF
+{
+public:
+	GeoTIFF() : _projection(0) {}
+
+	bool load(const QString &path);
+
+	const Datum &datum() const {return _datum;}
+	Projection *projection() const {return _projection;}
+	const QTransform &transform() const {return _transform;}
+
+	const QString name() const {return _name;}
+	const QSize &size() const {return _size;}
+
+	const QString &errorString() const {return _errorString;}
+
+private:
+	union Value {
+		quint16 SHORT;
+		double DOUBLE;
+	};
+
+	struct Ctx {
+		quint32 scale;
+		quint32 tiepoints;
+		quint32 tiepointCount;
+		quint32 matrix;
+		quint32 keys;
+		quint32 values;
+
+		Ctx() : scale(0), tiepoints(0), tiepointCount(0), matrix(0), keys(0),
+		  values(0) {}
+	};
+
+	bool readEntry(TIFFFile &file, Ctx &ctx);
+	bool readIFD(TIFFFile &file, quint32 &offset, Ctx &ctx);
+	bool readScale(TIFFFile &file, quint32 offset, QPointF &scale);
+	bool readTiepoints(TIFFFile &file, quint32 offset, quint32 count,
+	  QList<ReferencePoint> &points);
+	bool readKeys(TIFFFile &file, Ctx &ctx, QMap<quint16, Value> &kv);
+	bool readGeoValue(TIFFFile &file, quint32 offset, quint16 index,
+	  double &val);
+
+	Datum datum(QMap<quint16, Value> &kv);
+	Projection::Method method(QMap<quint16, Value> &kv);
+	bool geographicModel(QMap<quint16, Value> &kv);
+	bool projectedModel(QMap<quint16, Value> &kv);
+
+	QTransform _transform;
+	Datum _datum;
+	Projection *_projection;
+	QSize _size;
+	QString _name;
+
+	QString _errorString;
+};
+
+#endif // GEOTIFF_H

src/map/lambertazimuthal.cpp

@@ -54,13 +54,13 @@ LambertAzimuthal::LambertAzimuthal(const Ellipsoid &ellipsoid,
 {
 	double es2, es4, es6;
 
-	_e = ellipsoid;
+	es2 = 2 * ellipsoid.flattening() - ellipsoid.flattening()
-	es2 = 2 * _e.flattening() - _e.flattening() * _e.flattening();
+	  * ellipsoid.flattening();
 
 	es4 = es2 * es2;
 	es6 = es4 * es2;
-	_ra = _e.radius() * (1.0 - es2 / 6.0 - 17.0 * es4 / 360.0 - 67.0 * es6
+	_ra = ellipsoid.radius() * (1.0 - es2 / 6.0 - 17.0 * es4 / 360.0 - 67.0
-	  / 3024.0);
+	  * es6 / 3024.0);
 	_latOrigin = deg2rad(latitudeOrigin);
 	_sinLatOrigin = sin(_latOrigin);
 	_cosLatOrigin = cos(_latOrigin);

src/map/lambertazimuthal.h

@@ -14,8 +14,6 @@ public:
 	virtual Coordinates xy2ll(const QPointF &p) const;
 
 private:
-	Ellipsoid _e;
-
 	double _ra;
 	double _sinLatOrigin;
 	double _cosLatOrigin;

src/map/lambertconic.cpp

@@ -1,3 +1,46 @@
+/*
+ * Based on libgeotrans with the following Source Code Disclaimer:
+
+1. The GEOTRANS source code ("the software") is provided free of charge by
+the National Imagery and Mapping Agency (NIMA) of the United States
+Department of Defense. Although NIMA makes no copyright claim under Title 17
+U.S.C., NIMA claims copyrights in the source code under other legal regimes.
+NIMA hereby grants to each user of the software a license to use and
+distribute the software, and develop derivative works.
+
+2. Warranty Disclaimer: The software was developed to meet only the internal
+requirements of the U.S. National Imagery and Mapping Agency. The software
+is provided "as is," and no warranty, express or implied, including but not
+limited to the implied warranties of merchantability and fitness for
+particular purpose or arising by statute or otherwise in law or from a
+course of dealing or usage in trade, is made by NIMA as to the accuracy and
+functioning of the software.
+
+3. NIMA and its personnel are not required to provide technical support or
+general assistance with respect to the software.
+
+4. Neither NIMA nor its personnel will be liable for any claims, losses, or
+damages arising from or connected with the use of the software. The user
+agrees to hold harmless the United States National Imagery and Mapping
+Agency. The user's sole and exclusive remedy is to stop using the software.
+
+5. NIMA requests that products developed using the software credit the
+source of the software with the following statement, "The product was
+developed using GEOTRANS, a product of the National Imagery and Mapping
+Agency and U.S. Army Engineering Research and Development Center."
+
+6. For any products developed using the software, NIMA requires a disclaimer
+that use of the software does not indicate endorsement or approval of the
+product by the Secretary of Defense or the National Imagery and Mapping
+Agency. Pursuant to the United States Code, 10 U.S.C. Sec. 2797, the name of
+the National Imagery and Mapping Agency, the initials "NIMA", the seal of
+the National Imagery and Mapping Agency, or any colorable imitation thereof
+shall not be used to imply approval, endorsement, or authorization of a
+product without prior written permission from United States Secretary of
+Defense.
+
+*/
+
 #include <cmath>
 #include "lambertconic.h"
 
@@ -5,76 +48,229 @@
 	#define M_PI_2 1.57079632679489661923
 #endif // M_PI_2
 #ifndef M_PI_4
-	#define M_PI_4 0.78539816339744830962
+	#define M_PI_4 0.785398163397448309616
-#endif // M_PI_4
+#endif /* M_PI_4 */
 
-static double q(const Ellipsoid &el, double b)
+#define LAMBERT_m(clat, essin) (clat / sqrt(1.0 - essin * essin))
+#define LAMBERT2_t(lat, essin, es_over_2) \
+	(tan(M_PI_4 - lat / 2) * pow((1.0 + essin) / (1.0 - essin), es_over_2))
+#define LAMBERT1_t(lat, essin, es_over_2) \
+	(tan(M_PI_4 - lat / 2) / pow((1.0 - essin) / (1.0 + essin), es_over_2))
+
+
+LambertConic1::LambertConic1(const Ellipsoid &ellipsoid, double latitudeOrigin,
+  double longitudeOrigin, double scale, double falseEasting,
+  double falseNorthing)
 {
-	double e = sqrt(el.flattening() * (2. - el.flattening()));
+	double es2;
-	double esb = e * sin(b);
+	double es_sin;
-	return log(tan(M_PI_4 + b / 2.) * pow((1. - esb) / (1. + esb), e / 2.));
+	double m0;
+	double lat_orig;
+
+
+	lat_orig = deg2rad(latitudeOrigin);
+	_longitudeOrigin = deg2rad(longitudeOrigin);
+	if (_longitudeOrigin > M_PI)
+		_longitudeOrigin -= 2 * M_PI;
+
+	_falseEasting = falseEasting;
+	_falseNorthing = falseNorthing;
+
+	es2 = 2.0 * ellipsoid.flattening() - ellipsoid.flattening()
+	  * ellipsoid.flattening();
+	_es = sqrt(es2);
+	_es_over_2 = _es / 2.0;
+
+	_n = sin(lat_orig);
+
+	es_sin = _es * sin(lat_orig);
+	m0 = LAMBERT_m(cos(lat_orig), es_sin);
+	_t0 = LAMBERT1_t(lat_orig, es_sin, _es_over_2);
+
+	_rho0 = ellipsoid.radius() * scale * m0 / _n;
+
+	_rho_olat = _rho0;
 }
 
-static double iq(const Ellipsoid &el, double q)
+QPointF LambertConic1::ll2xy(const Coordinates &c) const
 {
-	double e = sqrt(el.flattening() * (2. - el.flattening()));
+	double t;
-	double b0 = 0.;
+	double rho;
-	double b = 2. * atan(exp(q)) - M_PI_2;
+	double dlam;
+	double theta;
+	double lat = deg2rad(c.lat());
 
-	do {
-		b0 = b;
-		double esb = e * sin(b);
-		b = 2. * atan(exp(q) * pow((1. - esb) / (1. + esb), -e / 2.)) - M_PI_2;
-	} while (fabs(b - b0) > 1e-10);
 
-	return b;
+	if (fabs(fabs(lat) - M_PI_2) > 1.0e-10) {
+		t = LAMBERT1_t(lat, _es * sin(lat), _es_over_2);
+		rho = _rho0 * pow(t / _t0, _n);
+	} else
+		rho = 0.0;
+
+	dlam = deg2rad(c.lon()) - _longitudeOrigin;
+
+	if (dlam > M_PI)
+		dlam -= 2 * M_PI;
+	if (dlam < -M_PI)
+		dlam += 2 * M_PI;
+
+	theta = _n * dlam;
+
+	return QPointF(rho * sin(theta) + _falseEasting, _rho_olat - rho
+	  * cos(theta) + _falseNorthing);
 }
 
-static double nradius(const Ellipsoid &el, double phi)
+Coordinates LambertConic1::xy2ll(const QPointF &p) const
 {
-	double sin_phi = sin(phi);
+	double dx;
-	return (el.radius() / sqrt(1. - (el.flattening() * (2. - el.flattening()))
+	double dy;
-	  * sin_phi * sin_phi));
+	double rho;
+	double rho_olat_minus_dy;
+	double t;
+	double PHI;
+	double es_sin;
+	double tempPHI = 0.0;
+	double theta = 0.0;
+	double tolerance = 4.85e-10;
+	int count = 30;
+	double lat, lon;
+
+
+	dy = p.y() - _falseNorthing;
+	dx = p.x() - _falseEasting;
+	rho_olat_minus_dy = _rho_olat - dy;
+	rho = sqrt(dx * dx + (rho_olat_minus_dy) * (rho_olat_minus_dy));
+
+	if (_n < 0.0) {
+		rho *= -1.0;
+		dx *= -1.0;
+		rho_olat_minus_dy *= -1.0;
 	}
 
-LambertConic::LambertConic(const Ellipsoid &ellipsoid, double standardParallel1,
+	if (rho != 0.0) {
-  double standardParallel2, double latitudeOrigin, double longitudeOrigin,
+		theta = atan2(dx, rho_olat_minus_dy) / _n;
-  double scale, double falseEasting, double falseNorthing) : _e(ellipsoid)
+		t = _t0 * pow(rho / _rho0, 1 / _n);
-{
+		PHI = M_PI_2 - 2.0 * atan(t);
-	_cm = deg2rad(longitudeOrigin);
+		while (fabs(PHI - tempPHI) > tolerance && count) {
-	_fe = falseEasting;
+			tempPHI = PHI;
-	_fn = falseNorthing;
+			es_sin = _es * sin(PHI);
-
+			PHI = M_PI_2 - 2.0 * atan(t * pow((1.0 - es_sin) / (1.0 + es_sin),
-	double sp1 = deg2rad(standardParallel1);
+			  _es_over_2));
-	double sp2 = deg2rad(standardParallel2);
+			count--;
-
-	double N1 = nradius(_e, sp1);
-	double N2 = nradius(_e, sp2);
-
-	_q0 = q(_e, deg2rad(latitudeOrigin));
-	double q1 = q(_e, sp1);
-	double q2 = q(_e, sp2);
-
-	_n = log((N1 * cos(sp1)) / (N2 * cos(sp2))) / (q2 - q1);
-	double R1 = N1 * cos(sp1) / _n;
-	_R0 = scale * R1 * exp(_n * (q1 - _q0));
 		}
 
-QPointF LambertConic::ll2xy(const Coordinates &c) const
+		if (!count)
-{
+			return Coordinates();
-	double dl = _n * (deg2rad(c.lon()) - _cm);
-	double R = _R0 * exp(_n * (_q0 - q(_e, deg2rad(c.lat()))));
 
-	return QPointF(_fe + R * sin(dl), _fn + _R0 - R * cos(dl));
+		lat = PHI;
+		lon = theta + _longitudeOrigin;
+
+		if (fabs(lat) < 2.0e-7)
+			lat = 0.0;
+		if (lat > M_PI_2)
+			lat = M_PI_2;
+		else if (lat < -M_PI_2)
+			lat = -M_PI_2;
+
+		if (lon > M_PI) {
+			if (lon - M_PI < 3.5e-6)
+				lon = M_PI;
+			else
+				lon -= 2 * M_PI;
+		}
+		if (lon < -M_PI) {
+			if (fabs(lon + M_PI) < 3.5e-6)
+				lon = -M_PI;
+			else
+				lon += 2 * M_PI;
 		}
 
-Coordinates LambertConic::xy2ll(const QPointF &p) const
+		if (fabs(lon) < 2.0e-7)
-{
+			lon = 0.0;
-	double dl = atan((p.x() - _fe) / (_fn + _R0 - p.y()));
+		if (lon > M_PI)
-	double dx = p.x() - _fe;
+			lon = M_PI;
-	double dy = p.y() - _fn - _R0;
+		else if (lon < -M_PI)
-	double R = sqrt(dx * dx + dy * dy);
+			lon = -M_PI;
-	double q = _q0 - log(fabs(R / _R0)) / _n;
+	} else {
-
+		if (_n > 0.0)
-	return Coordinates(rad2deg(_cm + dl / _n), rad2deg(iq(_e, q)));
+			lat = M_PI_2;
+		else
+			lat = -M_PI_2;
+		lon = _longitudeOrigin;
+	}
+
+	return Coordinates(rad2deg(lon), rad2deg(lat));
+}
+
+LambertConic2::LambertConic2(const Ellipsoid &ellipsoid,
+  double standardParallel1, double standardParallel2, double latitudeOrigin,
+  double longitudeOrigin, double falseEasting, double falseNorthing)
+{
+	double es, es_over_2, es2, es_sin;
+	double lat0;
+	double k0;
+	double t0;
+	double t1, t2;
+	double t_olat;
+	double m0;
+	double m1;
+	double m2;
+	double n;
+	double const_value;
+	double sp1, sp2;
+	double lat_orig;
+
+
+	lat_orig = deg2rad(latitudeOrigin);
+	sp1 = deg2rad(standardParallel1);
+	sp2 = deg2rad(standardParallel2);
+
+	if (fabs(sp1 - sp2) > 1.0e-10) {
+		es2 = 2 * ellipsoid.flattening() - ellipsoid.flattening()
+		  * ellipsoid.flattening();
+		es = sqrt(es2);
+		es_over_2 = es / 2.0;
+
+		es_sin = es * sin(lat_orig);
+		t_olat = LAMBERT2_t(lat_orig, es_sin, es_over_2);
+
+		es_sin = es * sin(sp1);
+		m1 = LAMBERT_m(cos(sp1), es_sin);
+		t1 = LAMBERT2_t(sp1, es_sin, es_over_2);
+
+		es_sin = es * sin(sp2);
+		m2 = LAMBERT_m(cos(sp2), es_sin);
+		t2 = LAMBERT2_t(sp2, es_sin, es_over_2);
+
+		n = log(m1 / m2) / log(t1 / t2);
+
+		lat0 = asin(n);
+
+		es_sin = es * sin(lat0);
+		m0 = LAMBERT_m(cos(lat0), es_sin);
+		t0 = LAMBERT2_t(lat0, es_sin, es_over_2);
+
+		k0 = (m1 / m0) * (pow(t0 / t1, n));
+
+		const_value = ((ellipsoid.radius() * m2) / (n * pow(t2, n)));
+
+		falseNorthing += (const_value * pow(t_olat, n)) - (const_value
+		  * pow(t0, n));
+	} else {
+		lat0 = sp1;
+		k0 = 1.0;
+	}
+
+	_lc1 = LambertConic1(ellipsoid, rad2deg(lat0), longitudeOrigin, k0,
+	  falseEasting, falseNorthing);
+}
+
+QPointF LambertConic2::ll2xy(const Coordinates &c) const
+{
+	return _lc1.ll2xy(c);
+}
+
+Coordinates LambertConic2::xy2ll(const QPointF &p) const
+{
+	return _lc1.xy2ll(p);
 }

src/map/lambertconic.h

@@ -4,26 +4,42 @@
 #include "ellipsoid.h"
 #include "projection.h"
 
-class LambertConic : public Projection
+class LambertConic1 : public Projection
 {
 public:
-	LambertConic(const Ellipsoid &ellipsoid, double standardParallel1,
+	LambertConic1() {}
-	  double standardParallel2, double latitudeOrigin, double longitudeOrigin,
+	LambertConic1(const Ellipsoid &ellipsoid, double latitudeOrigin,
-	  double scale, double falseEasting, double falseNorthing);
+	  double longitudeOrigin, double scale, double falseEasting,
+	  double falseNorthing);
 
 	virtual QPointF ll2xy(const Coordinates &c) const;
 	virtual Coordinates xy2ll(const QPointF &p) const;
 
 private:
-	Ellipsoid _e;
+	double _longitudeOrigin;
+	double _falseEasting;
+	double _falseNorthing;
 
-	double _cm;
+	double _es;
-	double _fe;
+	double _es_over_2;
-	double _fn;
-
-	double _q0;
-	double _R0;
 	double _n;
+	double _t0;
+	double _rho0;
+	double _rho_olat;
+};
+
+class LambertConic2 : public Projection
+{
+public:
+	LambertConic2(const Ellipsoid &ellipsoid, double standardParallel1,
+	  double standardParallel2, double latitudeOrigin, double longitudeOrigin,
+	   double falseEasting, double falseNorthing);
+
+	virtual QPointF ll2xy(const Coordinates &c) const;
+	virtual Coordinates xy2ll(const QPointF &p) const;
+
+private:
+	LambertConic1 _lc1;
 };
 
 #endif // LAMBERTCONIC_H

src/map/mapfile.cpp

@@ -0,0 +1,265 @@
+#include "latlon.h"
+#include "utm.h"
+#include "mapfile.h"
+
+
+static double parameter(const QString &str, bool *res)
+{
+	QString field = str.trimmed();
+	if (field.isEmpty()) {
+		*res = true;
+		return NAN;
+	}
+
+	return field.toDouble(res);
+}
+
+int MapFile::parse(QIODevice &device, QList<CalibrationPoint> &points,
+  QString &projection, Projection::Setup &setup, QString &datum)
+{
+	bool res, r[8];
+	int ln = 1;
+
+	while (!device.atEnd()) {
+		QByteArray line = device.readLine();
+
+		if (ln == 1) {
+			if (!line.trimmed().startsWith("OziExplorer Map Data File"))
+				return ln;
+		} else if (ln == 2)
+			_name = line.trimmed();
+		else if (ln == 3)
+			_image = line.trimmed();
+		else if (ln == 5)
+			datum = line.split(',').at(0).trimmed();
+		else {
+			QList<QByteArray> list = line.split(',');
+			QString key(list.at(0).trimmed());
+			bool ll = true; bool pp = true;
+
+
+			if (key.startsWith("Point") && list.count() == 17
+			  && !list.at(2).trimmed().isEmpty()) {
+				CalibrationPoint p;
+
+				int x = list.at(2).trimmed().toInt(&res);
+				if (!res)
+					return ln;
+				int y = list.at(3).trimmed().toInt(&res);
+				if (!res)
+					return ln;
+
+				int latd = list.at(6).trimmed().toInt(&res);
+				if (!res)
+					ll = false;
+				qreal latm = list.at(7).trimmed().toFloat(&res);
+				if (!res)
+					ll = false;
+				int lond = list.at(9).trimmed().toInt(&res);
+				if (!res)
+					ll = false;
+				qreal lonm = list.at(10).trimmed().toFloat(&res);
+				if (!res)
+					ll = false;
+				if (ll && list.at(8).trimmed() == "S") {
+					latd = -latd;
+					latm = -latm;
+				}
+				if (ll && list.at(11).trimmed() == "W") {
+					lond = -lond;
+					lonm = -lonm;
+				}
+
+				p.zone = list.at(13).trimmed().toInt(&res);
+				if (!res)
+					p.zone = 0;
+				qreal ppx = list.at(14).trimmed().toFloat(&res);
+				if (!res)
+					pp = false;
+				qreal ppy = list.at(15).trimmed().toFloat(&res);
+				if (!res)
+					pp = false;
+				if (list.at(16).trimmed() == "S")
+					p.zone = -p.zone;
+
+				p.rp.xy = QPoint(x, y);
+				if (ll) {
+					p.ll = Coordinates(lond + lonm/60.0, latd + latm/60.0);
+					if (p.ll.isValid())
+						points.append(p);
+					else
+						return ln;
+				} else if (pp) {
+					p.rp.pp = QPointF(ppx, ppy);
+					points.append(p);
+				} else
+					return ln;
+			} else if (key == "IWH") {
+				if (list.count() < 4)
+					return ln;
+				int w = list.at(2).trimmed().toInt(&res);
+				if (!res)
+					return ln;
+				int h = list.at(3).trimmed().toInt(&res);
+				if (!res)
+					return ln;
+				_size = QSize(w, h);
+			} else if (key == "Map Projection") {
+				if (list.count() < 2)
+					return ln;
+				projection = list.at(1);
+			} else if (key == "Projection Setup") {
+				if (list.count() < 8)
+					return ln;
+
+				setup = Projection::Setup(
+				  parameter(list[1], &r[1]), parameter(list[2], &r[2]),
+				  parameter(list[3], &r[3]), parameter(list[4], &r[4]),
+				  parameter(list[5], &r[5]), parameter(list[6], &r[6]),
+				  parameter(list[7], &r[7]));
+
+				for (int i = 1; i < 8; i++)
+					if (!r[i])
+						return ln;
+			}
+		}
+
+		ln++;
+	}
+
+	return 0;
+}
+
+bool MapFile::parseMapFile(QIODevice &device, QList<CalibrationPoint> &points,
+  QString &projection, Projection::Setup &setup, QString &datum)
+{
+	int el;
+
+	if (!device.open(QIODevice::ReadOnly)) {
+		_errorString = QString("Error opening map file: %1")
+		  .arg(device.errorString());
+		return false;
+	}
+
+	if ((el = parse(device, points, projection, setup, datum))) {
+		_errorString = QString("Map file parse error on line %1").arg(el);
+		return false;
+	}
+
+	return true;
+}
+
+bool MapFile::createDatum(const QString &datum)
+{
+	_datum = Datum(datum);
+	if (_datum.isNull()) {
+		_errorString = QString("%1: Unknown datum").arg(datum);
+		return false;
+	}
+
+	return true;
+}
+
+bool MapFile::createProjection(const QString &name,
+  const Projection::Setup &setup, QList<CalibrationPoint> &points)
+{
+	if (name == "Mercator")
+		_projection = Projection::projection(_datum, 1024, setup);
+	else if (name == "Transverse Mercator")
+		_projection = Projection::projection(_datum, 9807, setup);
+	else if (name == "Latitude/Longitude")
+		_projection = new LatLon();
+	else if (name == "Lambert Conformal Conic")
+		_projection = Projection::projection(_datum, 9802, setup);
+	else if (name == "Albers Equal Area")
+		_projection = Projection::projection(_datum, 9822, setup);
+	else if (name == "(A)Lambert Azimuthual Equal Area")
+		_projection = Projection::projection(_datum, 9820, setup);
+	else if (name == "(UTM) Universal Transverse Mercator") {
+		Projection::Setup s;
+		if (points.first().zone)
+			s = UTM::setup(points.first().zone);
+		else if (!points.first().ll.isNull())
+			s = UTM::setup(UTM::zone(points.first().ll));
+		else {
+			_errorString = "Can not determine UTM zone";
+			return 0;
+		}
+		_projection = Projection::projection(_datum, 9807, s);
+	} else if (name == "(NZTM2) New Zealand TM 2000")
+		_projection = Projection::projection(_datum, 9807, Projection::Setup(
+		  0, 173.0, 0.9996, 1600000, 10000000, NAN, NAN));
+	else if (name == "(BNG) British National Grid")
+		_projection = Projection::projection(_datum, 9807, Projection::Setup(
+		  49, -2, 0.999601, 400000, -100000, NAN, NAN));
+	else if (name == "(IG) Irish Grid")
+		_projection = Projection::projection(_datum, 9807, Projection::Setup(
+		  53.5, -8, 1.000035, 200000, 250000, NAN, NAN));
+	else if (name == "(SG) Swedish Grid")
+		_projection = Projection::projection(_datum, 9807, Projection::Setup(
+		  0, 15.808278, 1, 1500000, 0, NAN, NAN));
+	else if (name == "(I) France Zone I")
+		_projection = Projection::projection(_datum, 9802, Projection::Setup(
+		  49.5, 2.337229, NAN, 600000, 1200000, 48.598523, 50.395912));
+	else if (name == "(II) France Zone II")
+		_projection = Projection::projection(_datum, 9802, Projection::Setup(
+		  46.8, 2.337229, NAN, 600000, 2200000, 45.898919, 47.696014));
+	else if (name == "(III) France Zone III")
+		_projection = Projection::projection(_datum, 9802, Projection::Setup(
+		  44.1, 2.337229, NAN, 600000, 3200000, 43.199291, 44.996094));
+	else if (name == "(IV) France Zone IV")
+		_projection = Projection::projection(_datum, 9802, Projection::Setup(
+		  42.165, 2.337229, NAN, 234.358, 4185861.369, 41.560388, 42.767663));
+	else if (name == "(VICGRID) Victoria Australia")
+		_projection = Projection::projection(_datum, 9802, Projection::Setup(
+		  -37, 145, NAN, 2500000, 4500000, -36, -38));
+	else if (name == "(VG94) VICGRID94 Victoria Australia")
+		_projection = Projection::projection(_datum, 9802, Projection::Setup(
+		  -37, 145, NAN, 2500000, 2500000, -36, -38));
+	else {
+		_errorString = QString("%1: Unknown map projection").arg(name);
+		return false;
+	}
+
+	return true;
+}
+
+bool MapFile::computeTransformation(QList<CalibrationPoint> &points)
+{
+	QList<ReferencePoint> rp;
+
+	for (int i = 0; i < points.size(); i++) {
+		if (points.at(i).rp.pp.isNull())
+			points[i].rp.pp = _projection->ll2xy(points.at(i).ll);
+
+		rp.append(points.at(i).rp);
+	}
+
+	Transform t(rp);
+	if (t.isNull()) {
+		_errorString = t.errorString();
+		return false;
+	}
+
+	_transform = t.transform();
+
+	return true;
+}
+
+bool MapFile::load(QIODevice &file)
+{
+	QList<CalibrationPoint> points;
+	QString projection, datum;
+	Projection::Setup setup;
+
+	if (!parseMapFile(file, points, projection, setup, datum))
+		return false;
+	if (!createDatum(datum))
+		return false;
+	if (!createProjection(projection, setup, points))
+		return false;
+	if (!computeTransformation(points))
+		return false;
+
+	return true;
+}

src/map/mapfile.h

@@ -0,0 +1,52 @@
+#ifndef MAPFILE_H
+#define MAPFILE_H
+
+#include <QIODevice>
+#include <QTransform>
+#include "datum.h"
+#include "transform.h"
+#include "projection.h"
+
+class MapFile
+{
+public:
+	bool load(QIODevice &file);
+
+	const Datum &datum() const {return _datum;}
+	Projection *projection() const {return _projection;}
+	const QTransform &transform() const {return _transform;}
+
+	const QString &name() const {return _name;}
+	const QString &image() const {return _image;}
+	const QSize &size() const {return _size;}
+
+	const QString &errorString() const {return _errorString;}
+
+private:
+	struct CalibrationPoint {
+		ReferencePoint rp;
+		Coordinates ll;
+		int zone;
+	};
+
+	int parse(QIODevice &device, QList<CalibrationPoint> &points,
+	  QString &projection, Projection::Setup &setup, QString &datum);
+	bool parseMapFile(QIODevice &device, QList<CalibrationPoint> &points,
+	  QString &projection, Projection::Setup &setup, QString &datum);
+	bool createDatum(const QString &datum);
+	bool createProjection(const QString &projection,
+	  const Projection::Setup &setup, QList<CalibrationPoint> &points);
+	bool computeTransformation(QList<CalibrationPoint> &points);
+
+	QString _name;
+	QString _image;
+	QSize _size;
+
+	Datum _datum;
+	QTransform _transform;
+	Projection *_projection;
+
+	QString _errorString;
+};
+
+#endif // MAPFILE_H

src/map/maplist.cpp

@@ -80,7 +80,7 @@ bool MapList::loadMap(const QString &path)
 	}
 }
 
-bool MapList::loadTba(const QString &path)
+bool MapList::loadAtlas(const QString &path)
 {
 	Atlas *atlas = new Atlas(path, this);
 	if (atlas->isValid()) {
@@ -124,10 +124,10 @@ bool MapList::loadFile(const QString &path)
 
 	if (suffix == "txt")
 		return loadList(path);
-	else if (suffix == "map")
+	else if (suffix == "map" || suffix == "tif" || suffix == "tiff")
 		return loadMap(path);
 	else if (suffix == "tba")
-		return loadTba(path);
+		return loadAtlas(path);
 	else if (suffix == "tar")
 		return loadTar(path);
 	else {
@@ -138,13 +138,13 @@ bool MapList::loadFile(const QString &path)
 
 QString MapList::formats()
 {
-	return tr("Map files (*.map *.tba *.tar)") + ";;"
+	return tr("Map files (*.map *.tba *.tar *.tif *.tiff)") + ";;"
 	  + tr("URL list files (*.txt)");
 }
 
 QStringList MapList::filter()
 {
 	QStringList filter;
-	filter << "*.map" << "*.tba" << "*.tar" << "*.txt";
+	filter << "*.map" << "*.tba" << "*.tar" << "*.txt" << "*.tif" << "*.tiff";
 	return filter;
 }

src/map/maplist.h

@@ -25,7 +25,7 @@ private:
 
 	bool loadList(const QString &path);
 	bool loadMap(const QString &path);
-	bool loadTba(const QString &path);
+	bool loadAtlas(const QString &path);
 	bool loadTar(const QString &path);
 
 	QList<Map*> _maps;

src/map/offlinemap.cpp

@@ -9,297 +9,20 @@
 #include <QPixmapCache>
 #include "common/coordinates.h"
 #include "common/rectc.h"
-#include "datum.h"
+#include "mapfile.h"
-#include "utm.h"
+#include "geotiff.h"
-#include "matrix.h"
-#include "ozf.h"
 #include "offlinemap.h"
 
 
-int OfflineMap::parse(QIODevice &device, QList<ReferencePoint> &points,
+void OfflineMap::computeResolution()
-  QString &projection, Projection::Setup &setup, QString &datum)
 {
-	bool res;
+	Coordinates tl = xy2ll((bounds().topLeft()));
-	int ln = 1;
+	Coordinates br = xy2ll(bounds().bottomRight());
 
-	while (!device.atEnd()) {
+	qreal ds = tl.distanceTo(br);
-		QByteArray line = device.readLine();
+	qreal ps = QLineF(bounds().topLeft(), bounds().bottomRight()).length();
 
-		if (ln == 1) {
+	_resolution = ds/ps;
-			if (!line.trimmed().startsWith("OziExplorer Map Data File"))
-				return ln;
-		} else if (ln == 2)
-			_name = line.trimmed();
-		else if (ln == 3)
-			_imgPath = line.trimmed();
-		else if (ln == 5)
-			datum = line.split(',').at(0).trimmed();
-		else {
-			QList<QByteArray> list = line.split(',');
-			QString key(list.at(0).trimmed());
-			bool ll = true; bool pp = true;
-
-			if (key.startsWith("Point") && list.count() == 17
-			  && !list.at(2).trimmed().isEmpty()) {
-				int x = list.at(2).trimmed().toInt(&res);
-				if (!res)
-					return ln;
-				int y = list.at(3).trimmed().toInt(&res);
-				if (!res)
-					return ln;
-
-				int latd = list.at(6).trimmed().toInt(&res);
-				if (!res)
-					ll = false;
-				qreal latm = list.at(7).trimmed().toFloat(&res);
-				if (!res)
-					ll = false;
-				int lond = list.at(9).trimmed().toInt(&res);
-				if (!res)
-					ll = false;
-				qreal lonm = list.at(10).trimmed().toFloat(&res);
-				if (!res)
-					ll = false;
-				if (ll && list.at(8).trimmed() == "S") {
-					latd = -latd;
-					latm = -latm;
-				}
-				if (ll && list.at(11).trimmed() == "W") {
-					lond = -lond;
-					lonm = -lonm;
-				}
-
-				setup.zone = list.at(13).trimmed().toInt(&res);
-				if (!res)
-					setup.zone = 0;
-				qreal ppx = list.at(14).trimmed().toFloat(&res);
-				if (!res)
-					pp = false;
-				qreal ppy = list.at(15).trimmed().toFloat(&res);
-				if (!res)
-					pp = false;
-				if (list.at(16).trimmed() == "S")
-					setup.zone = -setup.zone;
-
-				ReferencePoint p;
-				p.xy = QPoint(x, y);
-				if (ll) {
-					p.ll = Coordinates(lond + lonm/60.0, latd + latm/60.0);
-					if (p.ll.isValid())
-						points.append(p);
-					else
-						return ln;
-				} else if (pp) {
-					p.pp = QPointF(ppx, ppy);
-					points.append(p);
-				} else
-					return ln;
-			} else if (key == "IWH") {
-				if (list.count() < 4)
-					return ln;
-				int w = list.at(2).trimmed().toInt(&res);
-				if (!res)
-					return ln;
-				int h = list.at(3).trimmed().toInt(&res);
-				if (!res)
-					return ln;
-				_size = QSize(w, h);
-			} else if (key == "Map Projection") {
-				if (list.count() < 2)
-					return ln;
-				projection = list.at(1);
-			} else if (key == "Projection Setup") {
-				if (list.count() < 8)
-					return ln;
-				setup.latitudeOrigin = list.at(1).trimmed().toFloat(&res);
-				if (!res)
-					setup.latitudeOrigin = 0;
-				setup.longitudeOrigin = list.at(2).trimmed().toFloat(&res);
-				if (!res)
-					setup.longitudeOrigin = 0;
-				setup.scale = list.at(3).trimmed().toFloat(&res);
-				if (!res)
-					setup.scale = 1.0;
-				setup.falseEasting = list.at(4).trimmed().toFloat(&res);
-				if (!res)
-					setup.falseEasting = 0;
-				setup.falseNorthing = list.at(5).trimmed().toFloat(&res);
-				if (!res)
-					setup.falseNorthing = 0;
-				setup.standardParallel1 = list.at(6).trimmed().toFloat(&res);
-				if (!res)
-					setup.standardParallel1 = 0;
-				setup.standardParallel2 = list.at(7).trimmed().toFloat(&res);
-				if (!res)
-					setup.standardParallel2 = 0;
-			}
-		}
-
-		ln++;
-	}
-
-	if (!setup.zone && !points.first().ll.isNull())
-		setup.zone = UTM::zone(points.first().ll);
-
-	return 0;
-}
-
-bool OfflineMap::parseMapFile(QIODevice &device, QList<ReferencePoint> &points,
-  QString &projection, Projection::Setup &setup, QString &datum)
-{
-	int el;
-
-	if (!device.open(QIODevice::ReadOnly)) {
-		_errorString = QString("Error opening map file: %1")
-		  .arg(device.errorString());
-		return false;
-	}
-
-	if ((el = parse(device, points, projection, setup, datum))) {
-		_errorString = QString("Map file parse error on line %1").arg(el);
-		return false;
-	}
-
-	return true;
-}
-
-bool OfflineMap::createProjection(const QString &datum,
-  const QString &projection, const Projection::Setup &setup,
-  QList<ReferencePoint> &points)
-{
-	if (points.count() < 2) {
-		_errorString = "Insufficient number of reference points";
-		return false;
-	}
-
-	Datum d = Datum::datum(datum);
-	if (d.isNull()) {
-		_errorString = QString("%1: Unknown datum").arg(datum);
-		return false;
-	}
-
-	_projection = Projection::projection(projection, d.ellipsoid(), setup);
-	if (!_projection) {
-		_errorString = Projection::errorString();
-		return false;
-	}
-
-	for (int i = 0; i < points.size(); i++) {
-		if (points.at(i).ll.isNull())
-			points[i].ll = d.toWGS84(_projection->xy2ll(points.at(i).pp));
-		else
-			points[i].ll = d.toWGS84(points[i].ll);
-	}
-
-	return true;
-}
-
-bool OfflineMap::simpleTransformation(const QList<ReferencePoint> &points)
-{
-	if (points.at(0).xy.x() == points.at(1).xy.x()
-	  || points.at(0).xy.y() == points.at(1).xy.y()) {
-		_errorString = "Invalid reference points tuple";
-		return false;
-	}
-
-	QPointF p0(_projection->ll2xy(points.at(0).ll));
-	QPointF p1(_projection->ll2xy(points.at(1).ll));
-
-	qreal dX, dY, lat0, lon0;
-	dX = (p0.x() - p1.x()) / (points.at(0).xy.x() - points.at(1).xy.x());
-	dY = (p1.y() - p0.y()) / (points.at(1).xy.y() - points.at(0).xy.y());
-	lat0 = p0.y() - points.at(0).xy.y() * dY;
-	lon0 = p1.x() - points.at(1).xy.x() * dX;
-
-	_transform = QTransform(1.0/dX, 0, 0, 1.0/dY, -lon0/dX, -lat0/dY);
-	_inverted = _transform.inverted();
-
-	return true;
-}
-
-bool OfflineMap::affineTransformation(const QList<ReferencePoint> &points)
-{
-	Matrix c(3, 2);
-	c.zeroize();
-	for (size_t i = 0; i < c.h(); i++) {
-		for (size_t j = 0; j < c.w(); j++) {
-			for (int k = 0; k < points.size(); k++) {
-				double f[3], t[2];
-				QPointF p = _projection->ll2xy(points.at(k).ll);
-
-				f[0] = p.x();
-				f[1] = p.y();
-				f[2] = 1.0;
-				t[0] = points.at(k).xy.x();
-				t[1] = points.at(k).xy.y();
-				c.m(i,j) += f[i] * t[j];
-			}
-		}
-	}
-
-	Matrix Q(3, 3);
-	Q.zeroize();
-	for (int qi = 0; qi < points.size(); qi++) {
-		double v[3];
-		QPointF p = _projection->ll2xy(points.at(qi).ll);
-
-		v[0] = p.x();
-		v[1] = p.y();
-		v[2] = 1.0;
-		for (size_t i = 0; i < Q.h(); i++)
-			for (size_t j = 0; j < Q.w(); j++)
-				Q.m(i,j) += v[i] * v[j];
-	}
-
-	Matrix M = Q.augemented(c);
-	if (!M.eliminate()) {
-		_errorString = "Singular transformation matrix";
-		return false;
-	}
-
-	_transform = QTransform(M.m(0,3), M.m(0,4), M.m(1,3), M.m(1,4), M.m(2,3),
-	  M.m(2,4));
-	_inverted = _transform.inverted();
-
-	return true;
-}
-
-bool OfflineMap::computeTransformation(const QList<ReferencePoint> &points)
-{
-	Q_ASSERT(points.size() >= 2);
-
-	if (points.size() == 2)
-		return simpleTransformation(points);
-	else
-		return affineTransformation(points);
-}
-
-bool OfflineMap::computeResolution(QList<ReferencePoint> &points)
-{
-	Q_ASSERT(points.count() >= 2);
-
-	int maxLon = 0, minLon = 0, maxLat = 0, minLat = 0;
-	qreal dLon, pLon, dLat, pLat;
-
-	for (int i = 1; i < points.size(); i++) {
-		if (points.at(i).ll.lon() < points.at(minLon).ll.lon())
-			minLon = i;
-		if (points.at(i).ll.lon() > points.at(maxLon).ll.lon())
-			maxLon = i;
-		if (points.at(i).ll.lat() < points.at(minLat).ll.lat())
-			minLat = i;
-		if (points.at(i).ll.lat() > points.at(maxLat).ll.lat())
-			maxLat = i;
-	}
-
-	dLon = points.at(minLon).ll.distanceTo(points.at(maxLon).ll);
-	pLon = QLineF(points.at(minLon).xy, points.at(maxLon).xy).length();
-	dLat = points.at(minLat).ll.distanceTo(points.at(maxLat).ll);
-	pLat = QLineF(points.at(minLat).xy, points.at(maxLat).xy).length();
-
-	_resolution = (dLon/pLon + dLat/pLat) / 2.0;
-
-	return true;
 }
 
 bool OfflineMap::getImageInfo(const QString &path)
@@ -384,13 +107,9 @@ bool OfflineMap::totalSizeSet()
 OfflineMap::OfflineMap(const QString &fileName, QObject *parent)
   : Map(parent)
 {
-	QList<ReferencePoint> points;
-	QString proj, datum;
-	Projection::Setup setup;
 	QFileInfo fi(fileName);
 	QString suffix = fi.suffix().toLower();
 
-
 	_valid = false;
 	_img = 0;
 	_projection = 0;
@@ -411,22 +130,52 @@ OfflineMap::OfflineMap(const QString &fileName, QObject *parent)
 			return;
 		}
 		QBuffer mapFile(&ba);
-		if (!parseMapFile(mapFile, points, proj, setup, datum))
+		MapFile mf;
+		if (!mf.load(mapFile)) {
+			_errorString = mf.errorString();
 			return;
+		} else {
+			_name = mf.name();
+			_size = mf.size();
+			_imgPath = mf.image();
+			_datum = mf.datum();
+			_projection = mf.projection();
+			_transform = mf.transform();
+		}
 	} else if (suffix == "map") {
+		MapFile mf;
 		QFile mapFile(fileName);
-		if (!parseMapFile(mapFile, points, proj, setup, datum))
+		if (!mf.load(mapFile)) {
+			_errorString = mf.errorString();
 			return;
+		} else {
+			_name = mf.name();
+			_size = mf.size();
+			_imgPath = mf.image();
+			_datum = mf.datum();
+			_projection = mf.projection();
+			_transform = mf.transform();
+		}
+	} else if (suffix == "tif" || suffix == "tiff") {
+		GeoTIFF gt;
+		if (!gt.load(fileName)) {
+			_errorString = gt.errorString();
+			return;
+		} else {
+			_name = gt.name();
+			_size = gt.size();
+			_imgPath = fileName;
+			_datum = gt.datum();
+			_projection = gt.projection();
+			_transform = gt.transform();
+		}
 	} else {
 		_errorString = "Not a map file";
 		return;
 	}
 
-	if (!createProjection(datum, proj, setup, points))
+	_inverted = _transform.inverted();
-		return;
+	computeResolution();
-	if (!computeTransformation(points))
-		return;
-	computeResolution(points);
 
 	if (_tar.isOpen()) {
 		if (!totalSizeSet())
@@ -454,10 +203,8 @@ OfflineMap::OfflineMap(const QString &fileName, QObject *parent)
 OfflineMap::OfflineMap(const QString &fileName, Tar &tar, QObject *parent)
   : Map(parent)
 {
-	QList<ReferencePoint> points;
-	QString proj, datum;
-	Projection::Setup setup;
 	QFileInfo fi(fileName);
+	MapFile mf;
 
 	_valid = false;
 	_img = 0;
@@ -477,27 +224,27 @@ OfflineMap::OfflineMap(const QString &fileName, Tar &tar, QObject *parent)
 	}
 	QBuffer buffer(&ba);
 
-	if (!parseMapFile(buffer, points, proj, setup, datum))
+	if (!mf.load(buffer)) {
+		_errorString = mf.errorString();
 		return;
-	if (!createProjection(datum, proj, setup, points))
+	}
-		return;
-	if (!totalSizeSet())
-		return;
-	if (!computeTransformation(points))
-		return;
-	computeResolution(points);
 
+	_name = mf.name();
+	_size = mf.size();
+	_datum = mf.datum();
+	_projection = mf.projection();
+	_transform = mf.transform();
+
+	_inverted = _transform.inverted();
+	computeResolution();
 
 	_tarPath = fi.absolutePath() + "/" + fi.completeBaseName() + ".tar";
-	_imgPath = QString();
 	_valid = true;
 }
 
 OfflineMap::~OfflineMap()
 {
-	if (_img)
 	delete _img;
-	if (_projection)
 	delete _projection;
 }
 
@@ -522,11 +269,9 @@ void OfflineMap::load()
 
 void OfflineMap::unload()
 {
-	if (_img) {
 	delete _img;
 	_img = 0;
 }
-}
 
 void OfflineMap::drawTiled(QPainter *painter, const QRectF &rect)
 {
@@ -599,14 +344,10 @@ void OfflineMap::drawOZF(QPainter *painter, const QRectF &rect)
 
 void OfflineMap::drawImage(QPainter *painter, const QRectF &rect)
 {
-	if (!_img || _img->isNull())
-		painter->fillRect(rect, _backgroundColor);
-	else {
 	QRect r(rect.toRect());
 	painter->drawImage(r.left(), r.top(), *_img, r.left(), r.top(),
 	  r.width(), r.height());
 }
-}
 
 void OfflineMap::draw(QPainter *painter, const QRectF &rect)
 {
@@ -614,26 +355,28 @@ void OfflineMap::draw(QPainter *painter, const QRectF &rect)
 		drawOZF(painter, rect);
 	else if (_tileSize.isValid())
 		drawTiled(painter, rect);
-	else
+	else if (_img && !_img->isNull())
 		drawImage(painter, rect);
+	else
+		painter->fillRect(rect, _backgroundColor);
 }
 
 QPointF OfflineMap::ll2xy(const Coordinates &c)
 {
 	if (_ozf.isOpen()) {
-		QPointF p(_transform.map(_projection->ll2xy(c)));
+		QPointF p(_transform.map(_projection->ll2xy(_datum.fromWGS84(c))));
 		return QPointF(p.x() * _scale.x(), p.y() * _scale.y());
 	} else
-		return _transform.map(_projection->ll2xy(c));
+		return _transform.map(_projection->ll2xy(_datum.fromWGS84(c)));
 }
 
 Coordinates OfflineMap::xy2ll(const QPointF &p)
 {
 	if (_ozf.isOpen()) {
-		return _projection->xy2ll(_inverted.map(QPointF(p.x() / _scale.x(),
+		return _datum.toWGS84(_projection->xy2ll(_inverted.map(QPointF(p.x()
-		  p.y() / _scale.y())));
+		  / _scale.x(), p.y() / _scale.y()))));
 	} else
-		return _projection->xy2ll(_inverted.map(p));
+		return _datum.toWGS84(_projection->xy2ll(_inverted.map(p)));
 }
 
 QRectF OfflineMap::bounds() const

src/map/offlinemap.h

@@ -3,7 +3,9 @@
 
 #include <QTransform>
 #include "common/coordinates.h"
+#include "datum.h"
 #include "projection.h"
+#include "transform.h"
 #include "map.h"
 #include "tar.h"
 #include "ozf.h"
@@ -50,40 +52,23 @@ public:
 	  {return _transform.map(p);}
 
 private:
-	struct ReferencePoint {
-		QPoint xy;
-		Coordinates ll;
-		QPointF pp;
-	};
-
-	int parse(QIODevice &device, QList<ReferencePoint> &points,
-	  QString &projection, Projection::Setup &setup, QString &datum);
-	bool parseMapFile(QIODevice &device, QList<ReferencePoint> &points,
-	  QString &projection, Projection::Setup &setup, QString &datum);
-	bool totalSizeSet();
-	bool createProjection(const QString &datum, const QString &projection,
-	  const Projection::Setup &setup, QList<ReferencePoint> &points);
-	bool simpleTransformation(const QList<ReferencePoint> &points);
-	bool affineTransformation(const QList<ReferencePoint> &points);
-	bool computeTransformation(const QList<ReferencePoint> &points);
-	bool computeResolution(QList<ReferencePoint> &points);
 	bool getTileInfo(const QStringList &tiles, const QString &path = QString());
 	bool getImageInfo(const QString &path);
+	bool totalSizeSet();
 
 	void drawTiled(QPainter *painter, const QRectF &rect);
 	void drawOZF(QPainter *painter, const QRectF &rect);
 	void drawImage(QPainter *painter, const QRectF &rect);
 
+	void computeResolution();
 	void rescale(int zoom);
 
 	QString _name;
-	bool _valid;
-	QString _errorString;
 
 	QSize _size;
+	Datum _datum;
 	Projection *_projection;
 	QTransform _transform, _inverted;
-	qreal _resolution;
 
 	OZF _ozf;
 	Tar _tar;
@@ -94,7 +79,11 @@ private:
 	QString _tileName;
 
 	int _zoom;
+	qreal _resolution;
 	QPointF _scale;
+
+	bool _valid;
+	QString _errorString;
 };
 
 #endif // OFFLINEMAP_H

src/map/pcs.cpp

@@ -0,0 +1,125 @@
+#include "pcs.h"
+
+
+class PCS::Entry {
+public:
+	Entry(int id, int gcs, int proj, const PCS &pcs)
+	  : _id(id), _gcs(gcs), _proj(proj), _pcs(pcs) {}
+
+	int id() const {return _id;}
+	int gcs() const {return _gcs;}
+	int proj() const {return _proj;}
+	const PCS &pcs() const {return _pcs;}
+
+private:
+	int _id;
+	int _gcs;
+	int _proj;
+	PCS _pcs;
+};
+
+QList<PCS::Entry> PCS::_pcss;
+QString PCS::_errorString;
+int PCS::_errorLine;
+
+static double parameter(const QString &str, bool *res)
+{
+	QString field = str.trimmed();
+	if (field.isEmpty()) {
+		*res = true;
+		return NAN;
+	}
+
+	return field.toDouble(res);
+}
+
+PCS::PCS(int id)
+{
+	for (int i = 0; i < _pcss.size(); i++) {
+		if (_pcss.at(i).id() == id) {
+			*this = _pcss.at(i).pcs();
+			return;
+		}
+	}
+
+	*this = PCS();
+}
+
+PCS::PCS(int gcs, int proj)
+{
+	for (int i = 0; i < _pcss.size(); i++) {
+		if (_pcss.at(i).gcs() == gcs && _pcss.at(i).proj() == proj) {
+			*this = _pcss.at(i).pcs();
+			return;
+		}
+	}
+
+	*this = PCS();
+}
+
+bool PCS::loadList(const QString &path)
+{
+	QFile file(path);
+	bool res[12];
+	int id, gcs, proj, transform;
+
+
+	if (!file.open(QFile::ReadOnly)) {
+		_errorString = qPrintable(file.errorString());
+		return false;
+	}
+
+	_errorLine = 1;
+	_errorString.clear();
+
+	while (!file.atEnd()) {
+		QByteArray line = file.readLine();
+		QList<QByteArray> list = line.split(',');
+		if (list.size() != 12) {
+			_errorString = "Format error";
+			return false;
+		}
+
+		id = list[1].trimmed().toInt(&res[1]);;
+		gcs = list[2].trimmed().toInt(&res[2]);
+		proj = list[3].trimmed().toInt(&res[3]);
+		transform = list[4].trimmed().toInt(&res[4]);
+
+		Projection::Setup setup(
+		  parameter(list[5], &res[5]), parameter(list[6], &res[6]),
+		  parameter(list[7], &res[7]), parameter(list[8], &res[8]),
+		  parameter(list[9], &res[9]), parameter(list[10], &res[10]),
+		  parameter(list[11], &res[11]));
+
+		for (int i = 1; i < 12; i++) {
+			if (!res[i]) {
+				_errorString = "Parse error";
+				return false;
+			}
+		}
+
+		Datum datum(gcs);
+		if (datum.isNull()) {
+			_errorString = "Unknown datum";
+			return false;
+		}
+		Projection::Method method(transform);
+		if (method.isNull()) {
+			_errorString = "Unknown coordinates transformation method";
+			return false;
+		}
+
+		_pcss.append(Entry(id, gcs, proj, PCS(datum, method, setup)));
+
+		_errorLine++;
+	}
+
+	return true;
+}
+
+QDebug operator<<(QDebug dbg, const PCS &pcs)
+{
+	dbg.nospace() << "PCS(" << pcs.datum() << ", " << pcs.method()
+	  << ", " << pcs.setup() << ")";
+	return dbg.space();
+}

src/map/pcs.h

@@ -0,0 +1,46 @@
+#ifndef PCS_H
+#define PCS_H
+
+#include <QDebug>
+#include <QList>
+#include "datum.h"
+#include "projection.h"
+
+class PCS
+{
+public:
+	PCS() {}
+	PCS(const Datum &datum, const Projection::Method &method,
+	  const Projection::Setup &setup)
+		: _datum(datum), _method(method), _setup(setup) {}
+	PCS(int id);
+	PCS(int gcs, int proj);
+
+	const Datum &datum() const {return _datum;}
+	const Projection::Method &method() const {return _method;}
+	const Projection::Setup &setup() const {return _setup;}
+
+	bool isNull() const
+	  {return (_datum.isNull() && _method.isNull());}
+	bool isValid() const
+	  {return !(_datum.isNull() || _method.isNull());}
+
+	static bool loadList(const QString &path);
+	static const QString &errorString() {return _errorString;}
+	static int errorLine() {return _errorLine;}
+
+private:
+	class Entry;
+
+	Datum _datum;
+	Projection::Method _method;
+	Projection::Setup _setup;
+
+	static QList<Entry> _pcss;
+	static QString _errorString;
+	static int _errorLine;
+};
+
+QDebug operator<<(QDebug dbg, const PCS &pcs);
+
+#endif // PCS_H

src/map/projection.cpp

@@ -1,89 +1,76 @@
-#include "latlon.h"
+#include "datum.h"
 #include "mercator.h"
 #include "transversemercator.h"
-#include "utm.h"
 #include "lambertconic.h"
 #include "albersequal.h"
 #include "lambertazimuthal.h"
+#include "projection.h"
 
 
-QString Projection::_errorString;
+Projection::Method::Method(int id)
-
-Projection *Projection::projection(const QString &name,
-  const Ellipsoid &ellipsoid, const Setup &setup)
 {
-	if (setup.latitudeOrigin < -90.0 || setup.latitudeOrigin > 90.0
+	switch (id) {
-	  || setup.longitudeOrigin < -180.0 || setup.longitudeOrigin > 180.0
+		case 1024:
-	  || setup.standardParallel1 < -90.0 || setup.standardParallel1 > 90.0
+		case 9801:
-	  || setup.standardParallel2 < -90.0 || setup.standardParallel2 > 90.0) {
+		case 9802:
-		_errorString = "Invalid projection setup";
+		case 9807:
-		return 0;
+		case 9820:
+		case 9822:
+		case 9841:
+			_id = id;
+			break;
+		default:
+			_id = 0;
+	}
 }
 
-	if (name == "Mercator")
+Projection *Projection::projection(const Datum &datum, const Method &method,
+  const Setup &setup)
+{
+	const Ellipsoid &ellipsoid = datum.ellipsoid();
+
+	switch (method.id()) {
+		case 9807:
+			return new TransverseMercator(ellipsoid, setup.latitudeOrigin(),
+			  setup.longitudeOrigin(), setup.scale(), setup.falseEasting(),
+			  setup.falseNorthing());
+		case 1024:
+		case 9841:
 			return new Mercator();
-	else if (name == "Transverse Mercator")
+		case 9802:
-		return new TransverseMercator(ellipsoid,
+			return new LambertConic2(ellipsoid, setup.standardParallel1(),
-		  setup.latitudeOrigin, setup.longitudeOrigin, setup.scale,
+			  setup.standardParallel2(), setup.latitudeOrigin(),
-		  setup.falseEasting, setup.falseNorthing);
+			  setup.longitudeOrigin(), setup.falseEasting(),
-	else if (name == "Latitude/Longitude")
+			  setup.falseNorthing());
-		return new LatLon();
+		case 9801:
-	else if (name == "Lambert Conformal Conic")
+			return new LambertConic1(ellipsoid, setup.latitudeOrigin(),
-		return new LambertConic(ellipsoid,
+			  setup.longitudeOrigin(), setup.scale(), setup.falseEasting(),
-		  setup.standardParallel1, setup.standardParallel2,
+			  setup.falseNorthing());
-		  setup.latitudeOrigin, setup.longitudeOrigin, setup.scale,
+		case 9820:
-		  setup.falseEasting, setup.falseNorthing);
+			return new LambertAzimuthal(ellipsoid, setup.latitudeOrigin(),
-	else if (name == "Albers Equal Area")
+			  setup.longitudeOrigin(), setup.falseEasting(),
-		return new AlbersEqual(ellipsoid, setup.standardParallel1,
+			  setup.falseNorthing());
-		  setup.standardParallel2, setup.latitudeOrigin, setup.longitudeOrigin,
+		case 9822:
-		  setup.falseEasting, setup.falseNorthing);
+			return new AlbersEqual(ellipsoid, setup.standardParallel1(),
-	else if (name == "(A)Lambert Azimuthual Equal Area")
+			  setup.standardParallel2(), setup.latitudeOrigin(),
-		return new LambertAzimuthal(ellipsoid, setup.latitudeOrigin,
+			  setup.longitudeOrigin(), setup.falseEasting(),
-		  setup.longitudeOrigin, setup.falseEasting, setup.falseNorthing);
+			  setup.falseNorthing());
-	else if (name == "(UTM) Universal Transverse Mercator") {
+		default:
-		if (setup.zone)
-			return new UTM(ellipsoid, setup.zone);
-		else {
-			_errorString = "Can not determine UTM zone";
-			return 0;
-		}
-	} else if (name == "(NZTM2) New Zealand TM 2000")
-		return new TransverseMercator(ellipsoid, 0, 173.0, 0.9996,
-		  1600000, 10000000);
-	else if (name == "(BNG) British National Grid")
-		return new TransverseMercator(ellipsoid, 49, -2, 0.999601,
-		  400000, -100000);
-	else if (name == "(IG) Irish Grid")
-		return new TransverseMercator(ellipsoid, 53.5, -8, 1.000035,
-		  200000, 250000);
-	else if (name == "(SG) Swedish Grid")
-		return new TransverseMercator(ellipsoid, 0, 15.808278, 1,
-		  1500000, 0);
-	else if (name == "(I) France Zone I")
-		return new LambertConic(ellipsoid, 48.598523, 50.395912,
-		  49.5, 2.337229, 1 /*0.99987734*/, 600000, 1200000);
-	else if (name == "(II) France Zone II")
-		return new LambertConic(ellipsoid, 45.898919, 47.696014,
-		  46.8, 2.337229, 1 /*0.99987742*/, 600000, 2200000);
-	else if (name == "(III) France Zone III")
-		return new LambertConic(ellipsoid, 43.199291, 44.996094,
-		  44.1, 2.337229, 1 /*0.99987750*/, 600000, 3200000);
-	else if (name == "(IV) France Zone IV")
-		return new LambertConic(ellipsoid, 41.560388, 42.767663,
-		  42.165, 2.337229, 1 /*0.99994471*/, 234.358, 4185861.369);
-	else if (name == "(VICGRID) Victoria Australia")
-		return new LambertConic(ellipsoid, -36, -38, -37, 145, 1,
-		  2500000, 4500000);
-	else if (name == "(VG94) VICGRID94 Victoria Australia")
-		return new LambertConic(ellipsoid, -36, -38, -37, 145, 1,
-		  2500000, 2500000);
-	else {
-		_errorString = QString("%1: Unknown map projection").arg(name);
 			return 0;
 	}
 }
 
-const QString &Projection::errorString()
+QDebug operator<<(QDebug dbg, const Projection::Setup &setup)
 {
-	return _errorString;
+	dbg.nospace() << "Setup(" << setup.latitudeOrigin() << ", "
+	  << setup.longitudeOrigin() << ", " << setup.scale() << ", "
+	  << setup.falseEasting() << ", " << setup.falseNorthing() << ", "
+	  << setup.standardParallel1() << ", " << setup.standardParallel2() << ")";
+	return dbg.space();
+}
+
+QDebug operator<<(QDebug dbg, const Projection::Method &method)
+{
+	dbg.nospace() << "Method(" << method.id() << ")";
+	return dbg.space();
 }

src/map/projection.h

@@ -2,22 +2,53 @@
 #define PROJECTION_H
 
 #include <QPointF>
-#include <QString>
+#include <QDebug>
 #include "common/coordinates.h"
 
-class Ellipsoid;
+class Datum;
 
 class Projection {
 public:
-	struct Setup {
+	class Setup {
-		double latitudeOrigin;
+	public:
-		double longitudeOrigin;
+		Setup() : _latitudeOrigin(NAN), _longitudeOrigin(NAN), _scale(NAN),
-		double scale;
+		  _falseEasting(NAN), _falseNorthing(NAN), _standardParallel1(NAN),
-		double falseEasting;
+		  _standardParallel2(NAN) {}
-		double falseNorthing;
+		Setup(double latitudeOrigin, double longitudeOrigin, double scale,
-		double standardParallel1;
+		  double falseEasting, double falseNorthing, double standardParallel1,
-		double standardParallel2;
+		  double standardParallel2) : _latitudeOrigin(latitudeOrigin),
-		int zone;
+		  _longitudeOrigin(longitudeOrigin), _scale(scale),
+		  _falseEasting(falseEasting), _falseNorthing(falseNorthing),
+		  _standardParallel1(standardParallel1),
+		  _standardParallel2(standardParallel2) {}
+
+		double latitudeOrigin() const {return _latitudeOrigin;}
+		double longitudeOrigin() const {return _longitudeOrigin;}
+		double scale() const {return _scale;}
+		double falseEasting() const {return _falseEasting;}
+		double falseNorthing() const {return _falseNorthing;}
+		double standardParallel1() const {return _standardParallel1;}
+		double standardParallel2() const {return _standardParallel2;}
+
+	private:
+		double _latitudeOrigin;
+		double _longitudeOrigin;
+		double _scale;
+		double _falseEasting;
+		double _falseNorthing;
+		double _standardParallel1;
+		double _standardParallel2;
+	};
+
+	class Method {
+	public:
+		Method() : _id(0) {}
+		Method(int id);
+
+		int id() const {return _id;}
+		bool isNull() const {return (_id == 0);}
+	private:
+		int _id;
 	};
 
 	virtual ~Projection() {}
@@ -25,12 +56,11 @@ public:
 	virtual QPointF ll2xy(const Coordinates &c) const = 0;
 	virtual Coordinates xy2ll(const QPointF &p) const = 0;
 
-	static Projection *projection(const QString &name,
+	static Projection *projection(const Datum &datum, const Method &method,
-	  const Ellipsoid &ellipsoid, const Setup &setup);
+	  const Setup &setup);
-	static const QString &errorString();
-
-private:
-	static QString _errorString;
 };
 
+QDebug operator<<(QDebug dbg, const Projection::Setup &setup);
+QDebug operator<<(QDebug dbg, const Projection::Method &method);
+
 #endif // PROJECTION_H

src/map/tifffile.cpp

@@ -0,0 +1,28 @@
+#include "tifffile.h"
+
+#define TIFF_II     0x4949
+#define TIFF_MM     0x4D4D
+#define TIFF_MAGIC  42
+
+bool TIFFFile::readHeader(quint32 &ifd)
+{
+	quint16 endian, magic;
+
+	if (QFile::read((char*)&endian, sizeof(endian)) < (qint64)sizeof(endian))
+		return false;
+	if (endian == TIFF_II)
+		_be = false;
+	else if (endian == TIFF_MM)
+		_be = true;
+	else
+		return false;
+
+	if (!readValue(magic))
+		return false;
+	if (magic != TIFF_MAGIC)
+		return false;
+	if (!readValue(ifd))
+		return false;
+
+	return true;
+}

src/map/tifffile.h

@@ -0,0 +1,51 @@
+#ifndef TIFFFILE_H
+#define TIFFFILE_H
+
+#include <QFile>
+#include <QtEndian>
+
+class TIFFFile : public QFile
+{
+public:
+	TIFFFile() : QFile(), _be(false) {}
+	TIFFFile(const QString &path) : QFile(path), _be(false) {}
+
+	bool readHeader(quint32 &ifd);
+	template<class T> bool readValue(T &val)
+	{
+		T data;
+
+		if (QFile::read((char*)&data, sizeof(T)) < (qint64)sizeof(T))
+			return false;
+
+		if (sizeof(T) > 4) {
+#if Q_BYTE_ORDER == Q_BIG_ENDIAN
+			if (_be)
+				val = data;
+			else {
+				for (size_t i = 0; i < sizeof(T); i++)
+					*((char *)&val + i) = *((char*)&data + sizeof(T) - 1 - i);
+			}
+#else
+			if (_be) {
+				for (size_t i = 0; i < sizeof(T); i++)
+					*((char *)&val + i) = *((char*)&data + sizeof(T) - 1 - i);
+			} else
+				val = data;
+#endif
+		} else if (sizeof(T) > 1) {
+			if (_be)
+				val = qFromBigEndian(data);
+			else
+				val = qFromLittleEndian(data);
+		} else
+			val = data;
+
+	return true;
+}
+
+private:
+	bool _be;
+};
+
+#endif // TIFFFILE_H

src/map/transform.cpp

@@ -0,0 +1,74 @@
+#include "projection.h"
+#include "matrix.h"
+#include "transform.h"
+
+void Transform::simple(const QList<ReferencePoint> &points)
+{
+	if (points.at(0).xy.x() == points.at(1).xy.x()
+	  || points.at(0).xy.y() == points.at(1).xy.y()) {
+		_errorString = "Invalid reference points tuple";
+		return;
+	}
+
+	qreal sX, sY, dX, dY;
+	sX = (points.at(0).xy.x() - points.at(1).xy.x())
+	  / (points.at(0).pp.x() - points.at(1).pp.x());
+	sY = (points.at(1).xy.y() - points.at(0).xy.y())
+	  / (points.at(1).pp.y() - points.at(0).pp.y());
+	dX = points.at(1).xy.x() - points.at(1).pp.x() * sX;
+	dY = points.at(0).xy.y() - points.at(0).pp.y() * sY;
+
+	_transform = QTransform(sX, 0, 0, sY, dX, dY);
+}
+
+void Transform::affine(const QList<ReferencePoint> &points)
+{
+	Matrix c(3, 2);
+	c.zeroize();
+	for (size_t i = 0; i < c.h(); i++) {
+		for (size_t j = 0; j < c.w(); j++) {
+			for (int k = 0; k < points.size(); k++) {
+				double f[3], t[2];
+
+				f[0] = points.at(k).pp.x();
+				f[1] = points.at(k).pp.y();
+				f[2] = 1.0;
+				t[0] = points.at(k).xy.x();
+				t[1] = points.at(k).xy.y();
+				c.m(i,j) += f[i] * t[j];
+			}
+		}
+	}
+
+	Matrix Q(3, 3);
+	Q.zeroize();
+	for (int qi = 0; qi < points.size(); qi++) {
+		double v[3];
+
+		v[0] = points.at(qi).pp.x();
+		v[1] = points.at(qi).pp.y();
+		v[2] = 1.0;
+		for (size_t i = 0; i < Q.h(); i++)
+			for (size_t j = 0; j < Q.w(); j++)
+				Q.m(i,j) += v[i] * v[j];
+	}
+
+	Matrix M = Q.augemented(c);
+	if (!M.eliminate()) {
+		_errorString = "Singular transformation matrix";
+		return;
+	}
+
+	_transform = QTransform(M.m(0,3), M.m(0,4), M.m(1,3), M.m(1,4), M.m(2,3),
+	  M.m(2,4));
+}
+
+Transform::Transform(const QList<ReferencePoint> &points)
+{
+	if (points.count() < 2)
+		_errorString = "Insufficient number of reference points";
+	else if (points.size() == 2)
+		simple(points);
+	else
+		affine(points);
+}

src/map/transform.h

@@ -0,0 +1,30 @@
+#ifndef TRANSFORM_H
+#define TRANSFORM_H
+
+#include <QTransform>
+#include <QList>
+#include "common/coordinates.h"
+
+struct ReferencePoint {
+	QPoint xy;
+	QPointF pp;
+};
+
+class Transform
+{
+public:
+	Transform(const QList<ReferencePoint> &points);
+
+	bool isNull() {return _transform.type() == QTransform::TxNone;}
+	const QString &errorString() const {return _errorString;}
+	const QTransform &transform() const {return _transform;}
+
+private:
+	void simple(const QList<ReferencePoint> &points);
+	void affine(const QList<ReferencePoint> &points);
+
+	QTransform _transform;
+	QString _errorString;
+};
+
+#endif // TRANSFORM_H

src/map/utm.cpp

@@ -1,10 +1,10 @@
 #include "ellipsoid.h"
 #include "utm.h"
 
-UTM::UTM(const Ellipsoid &ellipsoid, int zone)
+Projection::Setup UTM::setup(int zone)
-  : _tm(ellipsoid, 0, (qAbs(zone) - 1)*6 - 180 + 3, 0.9996, 500000,
-  zone < 0 ? 10000000 : 0)
 {
+	return Projection::Setup(0, (qAbs(zone) - 1)*6 - 180 + 3, 0.9996, 500000,
+	  zone < 0 ? 10000000 : 0, 0, 0);
 }
 
 int UTM::zone(const Coordinates &c)

src/map/utm.h

@@ -2,22 +2,12 @@
 #define UTM_H
 
 #include "projection.h"
-#include "transversemercator.h"
 
-class UTM : public Projection
+class UTM
 {
 public:
-	UTM(const Ellipsoid &ellipsoid, int zone);
-
-	virtual QPointF ll2xy(const Coordinates &c) const
-	  {return _tm.ll2xy(c);}
-	virtual Coordinates xy2ll(const QPointF &p) const
-	  {return _tm.xy2ll(p);}
-
 	static int zone(const Coordinates &c);
-
+	static Projection::Setup setup(int zone);
-private:
-	TransverseMercator _tm;
 };
 
 #endif // UTM_H