[15] | 1 | var webmap = webmap || {}; |
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| 2 | webmap.modules.map = {}; /// Namespace for map modules. |
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| 3 | |
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| 4 | /// Create a new webmap. |
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| 5 | /** |
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| 6 | * \param container A reference to the container element. |
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| 7 | * \param canvas_width The width of the canvas. |
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| 8 | * \param canvas_height The width of the canvas. |
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| 9 | */ |
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| 10 | webmap.Map = function(container, canvas_width, canvas_height) { |
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| 11 | |
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| 12 | // Call parent constructor. |
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| 13 | webmap.Extendable.call(this, webmap.modules.map); |
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| 14 | |
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| 15 | // Copy parameters. |
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| 16 | this.container = container; |
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| 17 | this.canvas_width = canvas_width; |
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| 18 | this.canvas_height = canvas_height; |
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| 19 | |
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| 20 | this.selected = null; |
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| 21 | |
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| 22 | // Create the SVG root element. |
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| 23 | this.root = document.createElementNS(webmap.svgns, "svg"); |
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| 24 | this.root.setAttribute("version", 1.1); |
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| 25 | this.root.setAttribute("baseProfile", "tiny"); |
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| 26 | this.root.setAttribute("class", "webmap"); |
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| 27 | this.root.setAttribute("width", this.canvas_width); |
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| 28 | this.root.setAttribute("height", this.canvas_height); |
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| 29 | this.root = this.container.appendChild(this.root); |
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| 30 | this.root.webmap = this; |
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| 31 | |
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| 32 | // Create a reference point outside of the transformed group. |
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| 33 | this.ref_rect = document.createElementNS(webmap.svgns, "rect"); |
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| 34 | this.ref_rect.setAttribute("id", "ref_rect"); |
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| 35 | this.ref_rect.setAttribute("x", 0); |
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| 36 | this.ref_rect.setAttribute("y", 0); |
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| 37 | this.ref_rect.width = this.root.width; |
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| 38 | this.ref_rect.height = this.root.height; |
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| 39 | this.ref_rect.setAttribute("fill", "none"); |
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| 40 | this.ref_rect.setAttribute("stroke", "none"); |
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| 41 | this.ref_rect = this.root.appendChild(this.ref_rect); |
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| 42 | |
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| 43 | // Create the world group |
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| 44 | this.world = document.createElementNS(webmap.svgns, "g"); |
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| 45 | this.world.setAttribute("id", "world"); |
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| 46 | this.world = this.root.appendChild(this.world); |
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| 47 | |
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| 48 | // Create initial view and virtual map transform. |
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| 49 | this.world_tf = this.root.createSVGMatrix().translate(this.canvas_width * 0.5, this.canvas_height * 0.5).scaleNonUniform(1, -1); |
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| 50 | this.applyView(); |
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| 51 | |
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| 52 | this.mouseClickListener = this.mouseClick.bind(this); |
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| 53 | this.root.addEventListener("click", this.mouseClickListener, false); |
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| 54 | } |
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| 55 | |
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| 56 | webmap.extend(webmap.Extendable, webmap.Map); |
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| 57 | |
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| 58 | /// Get the bounding rectangle of the SVG viewport. |
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| 59 | /** |
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| 60 | * Returned coordinates are relative to the parent viewport. |
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| 61 | */ |
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| 62 | webmap.Map.prototype.getBoundingRect = function() { |
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| 63 | return this.ref_rect.getBoundingClientRect(); |
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| 64 | } |
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| 65 | |
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| 66 | /// Add an image to the map. |
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| 67 | /** |
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| 68 | * \param iri The IRI identifying the image. |
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| 69 | * \param angle The rotation of the image in degrees. |
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| 70 | * \param x The X coordinate of the bottom left corner of the image. |
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| 71 | * \param y The Y coordinate of the bottom left corner of the image. |
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| 72 | * \param width The virtual width of the image. |
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| 73 | * \param height The virtual width of the image. |
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| 74 | * \return The created image. |
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| 75 | */ |
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| 76 | webmap.Map.prototype.addImage = function(iri, x, y, width, height) { |
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| 77 | var img = document.createElementNS(webmap.svgns, "image"); |
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| 78 | img.setAttributeNS(webmap.xlinkns, "href", iri); |
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| 79 | img.setAttribute("width", width); |
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| 80 | img.setAttribute("height", height); |
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| 81 | img.setAttribute("preserveAspectRatio", "none"); |
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| 82 | img.setAttribute("viewbox", "defer"); |
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| 83 | img.setAttribute("x", 0); |
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| 84 | img.setAttribute("y", 0); |
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| 85 | |
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| 86 | var tf = this.root.createSVGMatrix() |
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| 87 | .translate(x, y) |
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| 88 | .translate(width * 0.5, height * 0.5) |
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| 89 | .scaleNonUniform(1, -1) // Flip the Y axis to correct for the right handed coordinate system. |
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| 90 | .translate(width * -0.5, height * -0.5) |
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| 91 | |
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| 92 | img.transform.baseVal.initialize(img.transform.baseVal.createSVGTransformFromMatrix(tf)); |
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| 93 | this.world.appendChild(img); |
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| 94 | return img; |
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| 95 | } |
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| 96 | |
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| 97 | /// Remove an image from the map. |
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| 98 | /** |
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| 99 | * \param img The image to remove, as returned from addImage(). |
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| 100 | */ |
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| 101 | webmap.Map.prototype.removeImage = function(img) { |
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| 102 | if (img.parentNode === this.world) this.world.removeChild(img); |
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| 103 | } |
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| 104 | |
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| 105 | /// Add a robot to the map. |
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| 106 | /** |
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| 107 | * \param robot The robot to add. |
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| 108 | */ |
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| 109 | webmap.Map.prototype.addRobot = function(robot) { |
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| 110 | if (robot.map && robot.map !== this) { |
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| 111 | robot.map.removeRobot(robot); |
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| 112 | } else if (robot.map === this) { |
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| 113 | return; |
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| 114 | } |
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| 115 | |
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| 116 | robot.map = this; |
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| 117 | this.world.appendChild(robot.svg); |
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| 118 | this.notifyModules("onAddRobot", robot); |
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| 119 | } |
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| 120 | |
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| 121 | /// Remove a robot from the map. |
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| 122 | /** |
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| 123 | * \param robot The robot to remove. |
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| 124 | * \return True if the robot was on the map and has been removed, false otherwise. |
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| 125 | */ |
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| 126 | webmap.Map.prototype.removeRobot = function(robot) { |
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| 127 | if (!robot.map || robot.map !== this) return false; |
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| 128 | |
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| 129 | if (robot.svg.parentNode) robot.svg.parentNode.removeChild(robot.svg); |
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| 130 | this.notifyModules("onRemoveRobot", robot); |
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| 131 | return true; |
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| 132 | } |
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| 133 | |
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| 134 | /// Change the selected robot. |
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| 135 | /** |
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| 136 | * \param robot The robot to select. |
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| 137 | */ |
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| 138 | webmap.Map.prototype.setSelected = function(robot) { |
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| 139 | if (this.selected) this.selected.setSelected(false); |
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| 140 | this.selected = robot; |
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| 141 | if (this.selected) this.selected.setSelected(true); |
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| 142 | |
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| 143 | /// Notify all interested modules. |
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| 144 | this.notifyModules("onSelect"); |
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| 145 | } |
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| 146 | |
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| 147 | /// Apply world transforms. |
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| 148 | /** |
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| 149 | * Changing the view allows you to zoom in/out on parts of the map, |
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| 150 | * and to rotate the map. |
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| 151 | */ |
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| 152 | webmap.Map.prototype.applyView = function() { |
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| 153 | this.world.transform.baseVal.initialize(this.world.transform.baseVal.createSVGTransformFromMatrix(this.world_tf)); |
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| 154 | } |
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| 155 | |
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| 156 | /// Translate the world. |
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| 157 | /** |
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| 158 | * \param x The X offset to translate by. |
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| 159 | * \param y The Y offset to translate by. |
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| 160 | */ |
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| 161 | webmap.Map.prototype.translate = function(x, y) { |
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| 162 | this.world_tf = this.root.createSVGMatrix().translate(x, y).multiply(this.world_tf); |
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| 163 | this.applyView(); |
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| 164 | } |
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| 165 | |
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| 166 | /// Scale the world around a viewport point. |
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| 167 | /** |
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| 168 | * \param factor The factor to scale by. |
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| 169 | * \param x The X coordinate of the viewport point to use as center. |
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| 170 | * \param y The Y coordinate of the viewport point to use as center. |
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| 171 | */ |
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| 172 | webmap.Map.prototype.scale = function(factor, x, y) { |
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| 173 | if (x == undefined) x = this.map.canvas_width * 0.5; |
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| 174 | if (y == undefined) y = this.map.canvas_height * 0.5; |
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| 175 | this.world_tf = this.root.createSVGMatrix().translate(x - x * factor, y - y * factor).scale(factor).multiply(this.world_tf); |
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| 176 | this.applyView(); |
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| 177 | } |
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| 178 | |
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| 179 | /// Rotate the world around a given point. |
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| 180 | /** |
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| 181 | * \param angle The angle to rotate by. |
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| 182 | * \param x The X coordinate of the viewport point to use as center. |
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| 183 | * \param y The Y coordinate of the viewport point to use as center. |
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| 184 | */ |
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| 185 | webmap.Map.prototype.rotate = function(angle, x, y) { |
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| 186 | this.world_tf = this.root.createSVGMatrix().translate(x, y).rotate(angle).translate(-x, -y).multiply(this.world_tf); |
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| 187 | this.applyView(); |
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| 188 | } |
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| 189 | |
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| 190 | |
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| 191 | /// Handle mouse clicks. |
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| 192 | webmap.Map.prototype.mouseClick = function(event) { |
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| 193 | // Clear the selection. |
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| 194 | this.setSelected(null); |
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| 195 | } |
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