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