1 | /* kml.cc |
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2 | * Export from Aven as KML. |
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3 | */ |
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4 | /* Copyright (C) 2012 Olaf Kähler |
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5 | * Copyright (C) 2012,2013,2014,2015,2016,2017,2018,2019 Olly Betts |
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6 | * |
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7 | * This program is free software; you can redistribute it and/or modify |
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8 | * it under the terms of the GNU General Public License as published by |
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9 | * the Free Software Foundation; either version 2 of the License, or |
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10 | * (at your option) any later version. |
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11 | * |
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12 | * This program is distributed in the hope that it will be useful, |
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13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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15 | * GNU General Public License for more details. |
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16 | * |
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17 | * You should have received a copy of the GNU General Public License |
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18 | * along with this program; if not, write to the Free Software |
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19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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20 | */ |
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21 | |
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22 | #ifdef HAVE_CONFIG_H |
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23 | # include <config.h> |
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24 | #endif |
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25 | |
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26 | #include "kml.h" |
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27 | |
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28 | #include "export.h" // For LABELS, etc |
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29 | |
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30 | #include <stdio.h> |
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31 | #include <string> |
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32 | #include <math.h> |
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33 | |
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34 | #include "useful.h" |
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35 | #define ACCEPT_USE_OF_DEPRECATED_PROJ_API_H 1 |
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36 | #include <proj_api.h> |
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37 | |
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38 | #include "aven.h" |
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39 | #include "message.h" |
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40 | |
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41 | using namespace std; |
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42 | |
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43 | #define WGS84_DATUM_STRING "+proj=longlat +ellps=WGS84 +datum=WGS84" |
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44 | |
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45 | static void |
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46 | html_escape(FILE *fh, const char *s) |
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47 | { |
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48 | while (*s) { |
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49 | switch (*s) { |
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50 | case '<': |
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51 | fputs("<", fh); |
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52 | break; |
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53 | case '>': |
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54 | fputs(">", fh); |
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55 | break; |
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56 | case '&': |
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57 | fputs("&", fh); |
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58 | break; |
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59 | default: |
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60 | PUTC(*s, fh); |
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61 | } |
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62 | ++s; |
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63 | } |
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64 | } |
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65 | |
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66 | KML::KML(const char * input_datum, bool clamp_to_ground_) |
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67 | : clamp_to_ground(clamp_to_ground_) |
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68 | { |
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69 | if (!(pj_input = pj_init_plus(input_datum))) { |
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70 | wxString m = wmsg(/*Failed to initialise input coordinate system “%s”*/287); |
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71 | m = wxString::Format(m.c_str(), input_datum); |
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72 | throw m; |
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73 | } |
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74 | if (!(pj_output = pj_init_plus(WGS84_DATUM_STRING))) { |
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75 | wxString m = wmsg(/*Failed to initialise output coordinate system “%s”*/288); |
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76 | m = wxString::Format(m.c_str(), WGS84_DATUM_STRING); |
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77 | throw m; |
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78 | } |
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79 | } |
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80 | |
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81 | KML::~KML() |
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82 | { |
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83 | if (pj_input) |
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84 | pj_free(pj_input); |
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85 | if (pj_output) |
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86 | pj_free(pj_output); |
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87 | } |
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88 | |
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89 | const int * |
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90 | KML::passes() const |
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91 | { |
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92 | static const int default_passes[] = { |
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93 | PASG, XSECT, WALL1, WALL2, LEGS|SURF, LABELS|ENTS|FIXES|EXPORTS, 0 |
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94 | }; |
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95 | return default_passes; |
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96 | } |
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97 | |
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98 | /* Initialise KML routines. */ |
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99 | void KML::header(const char * title, const char *, time_t, |
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100 | double, double, double, double, double, double) |
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101 | { |
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102 | fputs( |
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103 | "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" |
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104 | "<kml xmlns=\"http://www.opengis.net/kml/2.2\">\n", fh); |
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105 | fputs("<Document><name>", fh); |
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106 | html_escape(fh, title); |
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107 | fputs("</name>\n", fh); |
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108 | // Set up styles for the icons to reduce the file size. |
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109 | fputs("<Style id=\"fix\"><IconStyle>" |
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110 | "<Icon><href>http://maps.google.com/mapfiles/kml/paddle/red-blank.png</href></Icon>" |
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111 | "</IconStyle></Style>\n", fh); |
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112 | fputs("<Style id=\"exp\"><IconStyle>" |
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113 | "<Icon><href>http://maps.google.com/mapfiles/kml/paddle/blu-blank.png</href></Icon>" |
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114 | "</IconStyle></Style>\n", fh); |
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115 | fputs("<Style id=\"ent\"><IconStyle>" |
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116 | "<Icon><href>http://maps.google.com/mapfiles/kml/paddle/grn-blank.png</href></Icon>" |
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117 | "</IconStyle></Style>\n", fh); |
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118 | // FIXME: does KML allow bounds? |
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119 | // NB Lat+long bounds are not necessarily the same as the bounds in survex |
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120 | // coords translated to WGS84 lat+long... |
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121 | } |
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122 | |
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123 | void |
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124 | KML::start_pass(int) |
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125 | { |
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126 | if (in_linestring) { |
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127 | fputs("</coordinates></LineString></MultiGeometry></Placemark>\n", fh); |
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128 | in_linestring = false; |
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129 | } |
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130 | } |
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131 | |
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132 | void |
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133 | KML::line(const img_point *p1, const img_point *p, unsigned /*flags*/, bool fPendingMove) |
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134 | { |
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135 | if (fPendingMove) { |
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136 | if (!in_linestring) { |
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137 | in_linestring = true; |
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138 | fputs("<Placemark><MultiGeometry>\n", fh); |
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139 | } else { |
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140 | fputs("</coordinates></LineString>\n", fh); |
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141 | } |
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142 | if (clamp_to_ground) { |
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143 | fputs("<LineString><coordinates>\n", fh); |
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144 | } else { |
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145 | fputs("<LineString><altitudeMode>absolute</altitudeMode><coordinates>\n", fh); |
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146 | } |
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147 | double X = p1->x, Y = p1->y, Z = p1->z; |
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148 | pj_transform(pj_input, pj_output, 1, 1, &X, &Y, &Z); |
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149 | X = deg(X); |
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150 | Y = deg(Y); |
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151 | // %.8f is at worst just over 1mm. |
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152 | fprintf(fh, "%.8f,%.8f,%.2f\n", X, Y, Z); |
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153 | } |
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154 | double X = p->x, Y = p->y, Z = p->z; |
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155 | pj_transform(pj_input, pj_output, 1, 1, &X, &Y, &Z); |
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156 | X = deg(X); |
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157 | Y = deg(Y); |
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158 | // %.8f is at worst just over 1mm. |
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159 | fprintf(fh, "%.8f,%.8f,%.2f\n", X, Y, Z); |
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160 | } |
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161 | |
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162 | void |
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163 | KML::xsect(const img_point *p, double angle, double d1, double d2) |
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164 | { |
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165 | double s = sin(rad(angle)); |
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166 | double c = cos(rad(angle)); |
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167 | |
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168 | double x1 = p->x + s * d1; |
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169 | double y1 = p->y + c * d1; |
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170 | double z1 = p->z; |
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171 | pj_transform(pj_input, pj_output, 1, 1, &x1, &y1, &z1); |
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172 | x1 = deg(x1); |
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173 | y1 = deg(y1); |
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174 | |
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175 | double x2 = p->x - s * d2; |
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176 | double y2 = p->y - c * d2; |
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177 | double z2 = p->z; |
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178 | pj_transform(pj_input, pj_output, 1, 1, &x2, &y2, &z2); |
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179 | x2 = deg(x2); |
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180 | y2 = deg(y2); |
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181 | |
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182 | if (clamp_to_ground) { |
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183 | fputs("<Placemark><name></name><LineString><coordinates>", fh); |
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184 | } else { |
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185 | fputs("<Placemark><name></name><LineString><altitudeMode>absolute</altitudeMode><coordinates>", fh); |
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186 | } |
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187 | fprintf(fh, "%.8f,%.8f,%.2f %.8f,%.8f,%.2f", x1, y1, z1, x2, y2, z2); |
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188 | fputs("</coordinates></LineString></Placemark>\n", fh); |
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189 | } |
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190 | |
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191 | void |
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192 | KML::wall(const img_point *p, double angle, double d) |
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193 | { |
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194 | double s = sin(rad(angle)); |
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195 | double c = cos(rad(angle)); |
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196 | |
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197 | double x = p->x + s * d; |
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198 | double y = p->y + c * d; |
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199 | double z = p->z; |
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200 | pj_transform(pj_input, pj_output, 1, 1, &x, &y, &z); |
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201 | x = deg(x); |
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202 | y = deg(y); |
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203 | |
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204 | if (!in_wall) { |
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205 | if (clamp_to_ground) { |
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206 | fputs("<Placemark><name></name><LineString><coordinates>", fh); |
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207 | } else { |
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208 | fputs("<Placemark><name></name><LineString><altitudeMode>absolute</altitudeMode><coordinates>", fh); |
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209 | } |
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210 | in_wall = true; |
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211 | } |
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212 | fprintf(fh, "%.8f,%.8f,%.2f\n", x, y, z); |
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213 | } |
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214 | |
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215 | void |
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216 | KML::passage(const img_point *p, double angle, double d1, double d2) |
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217 | { |
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218 | double s = sin(rad(angle)); |
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219 | double c = cos(rad(angle)); |
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220 | |
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221 | double x1 = p->x + s * d1; |
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222 | double y1 = p->y + c * d1; |
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223 | double z1 = p->z; |
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224 | pj_transform(pj_input, pj_output, 1, 1, &x1, &y1, &z1); |
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225 | x1 = deg(x1); |
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226 | y1 = deg(y1); |
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227 | |
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228 | double x2 = p->x - s * d2; |
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229 | double y2 = p->y - c * d2; |
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230 | double z2 = p->z; |
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231 | pj_transform(pj_input, pj_output, 1, 1, &x2, &y2, &z2); |
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232 | x2 = deg(x2); |
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233 | y2 = deg(y2); |
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234 | |
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235 | // Define each passage as a multigeometry comprising of one quadrilateral |
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236 | // per section. This prevents invalid geometry (such as self-intersecting |
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237 | // polygons) being created. |
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238 | |
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239 | if (!in_passage){ |
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240 | in_passage = true; |
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241 | fputs("<Placemark><name></name><MultiGeometry>\n", fh); |
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242 | } else { |
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243 | if (clamp_to_ground) { |
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244 | fputs("<Polygon>" |
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245 | "<outerBoundaryIs><LinearRing><coordinates>\n", fh); |
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246 | } else { |
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247 | fputs("<Polygon><altitudeMode>absolute</altitudeMode>" |
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248 | "<outerBoundaryIs><LinearRing><coordinates>\n", fh); |
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249 | } |
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250 | |
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251 | // Draw anti-clockwise around the ring. |
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252 | fprintf(fh, "%.8f,%.8f,%.2f\n", v2.GetX(), v2.GetY(), v2.GetZ()); |
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253 | fprintf(fh, "%.8f,%.8f,%.2f\n", v1.GetX(), v1.GetY(), v1.GetZ()); |
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254 | |
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255 | fprintf(fh, "%.8f,%.8f,%.2f\n", x1, y1, z1); |
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256 | fprintf(fh, "%.8f,%.8f,%.2f\n", x2, y2, z2); |
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257 | |
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258 | // Close the ring. |
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259 | fprintf(fh, "%.8f,%.8f,%.2f\n", v2.GetX(), v2.GetY(), v2.GetZ()); |
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260 | |
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261 | fputs("</coordinates></LinearRing></outerBoundaryIs>" |
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262 | "</Polygon>\n", fh); |
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263 | } |
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264 | |
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265 | v2 = Vector3(x2, y2, z2); |
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266 | v1 = Vector3(x1, y1, z1); |
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267 | } |
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268 | |
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269 | void |
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270 | KML::tube_end() |
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271 | { |
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272 | if (in_passage){ |
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273 | fputs("</MultiGeometry></Placemark>\n", fh); |
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274 | in_passage = false; |
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275 | } |
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276 | if (in_wall) { |
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277 | fputs("</coordinates></LineString></Placemark>\n", fh); |
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278 | in_wall = false; |
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279 | } |
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280 | } |
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281 | |
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282 | void |
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283 | KML::label(const img_point *p, const char *s, bool /*fSurface*/, int type) |
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284 | { |
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285 | double X = p->x, Y = p->y, Z = p->z; |
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286 | pj_transform(pj_input, pj_output, 1, 1, &X, &Y, &Z); |
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287 | X = deg(X); |
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288 | Y = deg(Y); |
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289 | // %.8f is at worst just over 1mm. |
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290 | fprintf(fh, "<Placemark><Point><coordinates>%.8f,%.8f,%.2f</coordinates></Point><name>", X, Y, Z); |
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291 | html_escape(fh, s); |
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292 | fputs("</name>", fh); |
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293 | // Add a "pin" symbol with colour matching what aven shows. |
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294 | switch (type) { |
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295 | case FIXES: |
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296 | fputs("<styleUrl>#fix</styleUrl>", fh); |
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297 | break; |
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298 | case EXPORTS: |
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299 | fputs("<styleUrl>#exp</styleUrl>", fh); |
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300 | break; |
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301 | case ENTS: |
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302 | fputs("<styleUrl>#ent</styleUrl>", fh); |
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303 | break; |
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304 | } |
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305 | fputs("</Placemark>\n", fh); |
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306 | } |
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307 | |
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308 | void |
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309 | KML::footer() |
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310 | { |
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311 | if (in_linestring) |
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312 | fputs("</coordinates></LineString></MultiGeometry></Placemark>\n", fh); |
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313 | fputs("</Document></kml>\n", fh); |
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314 | } |
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