1 | var prevOverlays = [];
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2 | var presentOverlays = [];
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3 | var undoneOverlays = [];
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4 | var cycleComplete = true;
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5 |
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6 | function undo() {
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7 |
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8 | for (var i = 0; i < overlays.length; i++) {
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9 | overlays[i].setMap(null);
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10 | }
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11 | if (prevOverlays.length != 0) {
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12 | selectedShapes = [];
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13 | overlays = [];
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14 | undoneOverlaysPush();
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15 | var prev_overlay = prevOverlays.pop();
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16 |
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17 | if (prev_overlay.length > 0) {
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18 | for (var i = 0; i < prev_overlay.length; i++) {
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19 | overlays[i] = prev_overlay[i];
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20 | overlays[i].setMap(map);
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21 | overlays[i].draggable = draggableState;
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22 | }
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23 | }
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24 | }
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25 | }
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26 |
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27 | function redo() {
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28 |
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29 | if (undoneOverlays.length != 0) {
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30 | selectedShapes = [];
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31 | for (var i = 0; i < overlays.length; i++) {
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32 | overlays[i].setMap(null);
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33 | }
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34 |
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35 | overlays = [];
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36 | var lastEntry = undoneOverlays[undoneOverlays.length - 1];
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37 | for (var i = 0; i < lastEntry.length; i++) {
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38 | overlays[i] = lastEntry[i];
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39 | overlays[i].setMap(map);
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40 | overlays[i].draggable = draggableState;
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41 | }
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42 |
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43 | var conditionPrevious = presentOverlays[0];
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44 | if (conditionPrevious !== undefined) {
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45 | if (conditionPrevious.length == 0) {
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46 | prevOverlays.push(presentOverlays[0]);
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47 | } else {
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48 | var overlays_copy = [];
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49 | for (var i = 0; i < presentOverlays[0].length; i++) {
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50 | var clone_shape = cloneShape(presentOverlays[0][i]);
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51 | if (overlayItemIsShape(clone_shape)) {
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52 | addShapeListeners(clone_shape, null);
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53 | } else {
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54 | addMarkerListeners(clone_shape, null);
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55 | }
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56 | overlays_copy[i] = clone_shape;
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57 | }
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58 | prevOverlays.push(overlays_copy);
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59 | }
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60 | }
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61 | presentOverlays = [];
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62 | presentOverlays.push(undoneOverlays[undoneOverlays.length - 1]);
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63 | undoneOverlays.pop();
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64 | }
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65 | }
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66 |
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67 | function clonePath(path) {
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68 | var clone_path = [];
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69 |
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70 | for (var i = 0; i < path.length; i++) {
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71 | var lati = path.getAt(i).lat();
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72 | var lngi = path.getAt(i).lng();
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73 | clone_lat_lng = {
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74 | lat: lati,
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75 | lng: lngi
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76 | };
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77 | clone_path.push(clone_lat_lng);
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78 | }
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79 |
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80 | return clone_path;
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81 | }
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82 |
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83 | function clonePolyline(polyline) {
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84 | var path = polyline.getPath();
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85 | var geodesic = polyline.geodesic;
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86 | var strokeColor = polyline.strokeColor;
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87 | var strokeOpacity = polyline.strokeOpacity;
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88 | var strokeWeight = polyline.strokeWeight;
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89 | var clone_path = clonePath(path);
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90 | //var editable = rect.editable;
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91 |
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92 | var clone_polyline = new google.maps.Polyline({
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93 | geodesic: geodesic,
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94 | strokeColor: strokeColor,
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95 | strokeOpacity: strokeOpacity,
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96 | strokeWeight: strokeWeight,
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97 | path: clone_path,
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98 | draggable: draggableState,
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99 | editable: false
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100 | });
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101 |
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102 | clone_polyline.type = google.maps.drawing.OverlayType.POLYLINE;
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103 |
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104 | return clone_polyline;
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105 | }
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106 |
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107 | function clonePolygon(polygon) {
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108 | var path = polygon.getPath();
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109 | var geodesic = polygon.geodesic;
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110 | var strokeColor = polygon.strokeColor;
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111 | var strokeOpacity = polygon.strokeOpacity;
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112 | var strokeWeight = polygon.strokeWeight;
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113 | var fillColor = polygon.fillColor;
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114 | var fillOpacity = polygon.fillOpacity;
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115 | var clone_path = clonePath(path);
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116 | //var editable = rect.editable;
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117 |
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118 | var clone_polygon = new google.maps.Polygon({
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119 | geodesic: geodesic,
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120 | strokeColor: strokeColor,
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121 | strokeOpacity: strokeOpacity,
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122 | strokeWeight: strokeWeight,
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123 | fillColor: fillColor,
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124 | fillOpacity: fillOpacity,
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125 | path: clone_path,
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126 | draggable: draggableState,
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127 | editable: false
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128 | });
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129 |
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130 | clone_polygon.type = google.maps.drawing.OverlayType.POLYGON;
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131 |
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132 | return clone_polygon;
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133 | }
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134 |
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135 | function cloneRectangle(rect) {
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136 | var strokeColor = rect.strokeColor;
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137 | var strokeOpacity = rect.strokeOpacity;
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138 | var strokeWeight = rect.strokeWeight;
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139 | var fillColor = rect.fillColor;
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140 | var fillOpacity = rect.fillOpacity;
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141 | var bounds = rect.getBounds();
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142 | var type = rect.type;
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143 | //var editable = rect.editable;
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144 |
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145 | var clone_rect = new google.maps.Rectangle({
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146 | strokeColor: strokeColor,
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147 | strokeOpacity: strokeOpacity,
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148 | strokeWeight: strokeWeight,
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149 | fillColor: fillColor,
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150 | fillOpacity: fillOpacity,
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151 | bounds: bounds,
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152 | draggable: draggableState,
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153 | editable: false,
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154 | type: type
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155 | });
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156 |
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157 | clone_rect.type = google.maps.drawing.OverlayType.RECTANGLE;
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158 |
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159 | return clone_rect;
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160 | }
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161 |
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162 | function cloneCircle(circ) {
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163 | var strokeColor = circ.strokeColor;
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164 | var strokeOpacity = circ.strokeOpacity;
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165 | var strokeWeight = circ.strokeWeight;
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166 | var fillColor = circ.fillColor;
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167 | var fillOpacity = circ.fillOpacity;
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168 | var center = circ.center;
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169 | var radius = circ.radius;
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170 | //var editable = rect.editable;
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171 |
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172 | var clone_circ = new google.maps.Circle({
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173 | strokeColor: strokeColor,
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174 | strokeOpacity: strokeOpacity,
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175 | strokeWeight: strokeWeight,
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176 | fillColor: fillColor,
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177 | fillOpacity: fillOpacity,
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178 | center: center,
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179 | radius: radius,
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180 | draggable: draggableState,
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181 | editable: false
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182 | });
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183 |
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184 | clone_circ.type = google.maps.drawing.OverlayType.CIRCLE;
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185 |
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186 | return clone_circ;
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187 | }
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188 |
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189 | function cloneMarker(marker) {
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190 | var position = marker.getPosition();
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191 | var anchorPoint = marker.anchorPoint;
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192 | var clone_marker = new google.maps.Marker({
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193 | anchorPoint: anchorPoint,
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194 | position: position,
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195 | clickable: true,
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196 | draggable: draggableState,
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197 | editable: false
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198 | })
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199 | clone_marker.type = google.maps.drawing.OverlayType.MARKER;
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200 |
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201 | return clone_marker;
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202 | }
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203 |
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204 | function cloneShape(shape) {
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205 | if (shape.type === google.maps.drawing.OverlayType.POLYLINE) {
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206 | var clone_polyline = clonePolyline(shape);
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207 | return clone_polyline;
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208 | } else if (shape.type === google.maps.drawing.OverlayType.POLYGON) {
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209 | var clone_polygon = clonePolygon(shape);
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210 | return clone_polygon;
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211 | } else if (shape.type === google.maps.drawing.OverlayType.RECTANGLE) {
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212 | var clone_rect = cloneRectangle(shape);
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213 | return clone_rect;
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214 |
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215 | } else if (shape.type === google.maps.drawing.OverlayType.CIRCLE) {
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216 | var clone_circ = cloneCircle(shape);
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217 | return clone_circ;
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218 |
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219 | } else {
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220 | var clone_marker = cloneMarker(shape);
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221 | return clone_marker;
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222 | }
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223 | }
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224 |
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225 | function overlayItemIsShape(overlay_item) {
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226 | var type = overlay_item.type;
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227 |
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228 | is_shape = (type === google.maps.drawing.OverlayType.POLYLINE)
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229 | || (type === google.maps.drawing.OverlayType.POLYGON)
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230 | || (type === google.maps.drawing.OverlayType.RECTANGLE)
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231 | || (type === google.maps.drawing.OverlayType.CIRCLE);
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232 |
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233 | return is_shape;
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234 | }
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235 |
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236 | function historyOverlayPush() {
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237 | if (cycleComplete) {
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238 | var overlays_copy = [];
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239 | for (var i = 0; i < overlays.length; i++) {
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240 | var clone_shape = cloneShape(overlays[i]);
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241 |
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242 | if (overlayItemIsShape(clone_shape)) {
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243 | addShapeListeners(clone_shape, null); // don't have an overlay event!
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244 | } else {
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245 | addMarkerListeners(clone_shape, null); // don't have an overlay event!
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246 | }
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247 | overlays_copy[i] = clone_shape;
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248 | }
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249 | undoneOverlays = [];
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250 | prevOverlays.push(overlays_copy);
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251 | }
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252 |
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253 | cycleComplete = false;
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254 | }
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255 | function presentOverlayPush() {
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256 |
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257 | OVbeforeClearing = overlays;
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258 | PObeforeClearing = presentOverlays;
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259 | presentOverlays = [];
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260 | var overlays_copy = [];
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261 | for (var i = 0; i < overlays.length; i++) {
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262 | var clone_shape = cloneShape(overlays[i]);
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263 | if (overlayItemIsShape(clone_shape)) {
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264 | addShapeListeners(clone_shape, null); // don't have an overlay event!
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265 | } else {
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266 | addMarkerListeners(clone_shape, null); // don't have an overlay event!
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267 | }
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268 | overlays_copy[i] = clone_shape;
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269 | }
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270 | presentOverlays.push(overlays_copy);
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271 | cycleComplete = true;
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272 |
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273 | }
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274 |
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275 | function undoneOverlaysPush() {
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276 |
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277 | var conditionUndone = presentOverlays[presentOverlays.length - 1] !== undefined;
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278 |
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279 | if (conditionUndone) {
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280 | var overlays_copy = [];
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281 | for (var i = 0; i < presentOverlays[0].length; i++) {
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282 | var clone_shape = cloneShape(presentOverlays[0][i]);
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283 | if (overlayItemIsShape(clone_shape)) {
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284 | addShapeListeners(clone_shape, null); // don't have an overlay event!
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285 | } else {
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286 | addMarkerListeners(clone_shape, null); // don't have an overlay event!
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287 | }
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288 | overlays_copy[i] = clone_shape;
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289 | }
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290 | undoneOverlays.push(overlays_copy);
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291 | }
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292 |
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293 | var conditionPresent = prevOverlays[prevOverlays.length - 1] !== undefined;
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294 |
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295 | if (conditionPresent) {
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296 | presentOverlays = [];
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297 | var overlays_copy = [];
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298 | for (var i = 0; i < prevOverlays[prevOverlays.length - 1].length; i++) {
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299 | var clone_shape = cloneShape(prevOverlays[prevOverlays.length - 1][i]);
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300 | if (overlayItemIsShape(clone_shape)) {
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301 | addShapeListeners(clone_shape, null); // don't have an overlay event!
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302 | } else {
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303 | addMarkerListeners(clone_shape, null); // don't have an overlay event!
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304 | }
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305 | overlays_copy[i] = clone_shape;
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306 | }
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307 | presentOverlays.push(overlays_copy);
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308 | }
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309 | } |
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