[77] | 1 | /** |
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| 2 | * o------------------------------------------------------------------------------o |
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| 3 | * | This file is part of the RGraph package - you can learn more at: | |
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| 4 | * | | |
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| 5 | * | http://www.rgraph.net | |
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| 6 | * | | |
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| 7 | * | This package is licensed under the RGraph license. For all kinds of business | |
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| 8 | * | purposes there is a small one-time licensing fee to pay and for non | |
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| 9 | * | commercial purposes it is free to use. You can read the full license here: | |
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| 10 | * | | |
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| 11 | * | http://www.rgraph.net/LICENSE.txt | |
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| 12 | * o------------------------------------------------------------------------------o |
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| 13 | */ |
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| 14 | |
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| 15 | if (typeof(RGraph) == 'undefined') RGraph = {}; |
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| 16 | |
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| 17 | /** |
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| 18 | * The bar chart constructor |
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| 19 | * |
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| 20 | * @param object canvas The canvas object |
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| 21 | * @param array data The chart data |
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| 22 | */ |
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| 23 | RGraph.Funnel = function (id, data) |
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| 24 | { |
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| 25 | // Get the canvas and context objects |
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| 26 | this.id = id; |
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| 27 | this.canvas = document.getElementById(id); |
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| 28 | this.context = this.canvas.getContext ? this.canvas.getContext("2d") : null; |
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| 29 | this.canvas.__object__ = this; |
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| 30 | this.type = 'funnel'; |
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| 31 | this.coords = []; |
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| 32 | this.isRGraph = true; |
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| 33 | |
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| 34 | |
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| 35 | /** |
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| 36 | * Compatibility with older browsers |
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| 37 | */ |
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| 38 | RGraph.OldBrowserCompat(this.context); |
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| 39 | |
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| 40 | |
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| 41 | // Check for support |
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| 42 | if (!this.canvas) { |
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| 43 | alert('[FUNNEL] No canvas support'); |
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| 44 | return; |
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| 45 | } |
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| 46 | |
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| 47 | /** |
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| 48 | * The funnel charts properties |
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| 49 | */ |
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| 50 | this.properties = { |
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| 51 | 'chart.strokestyle': 'black', |
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| 52 | 'chart.gutter.left': 25, |
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| 53 | 'chart.gutter.right': 25, |
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| 54 | 'chart.gutter.top': 25, |
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| 55 | 'chart.gutter.bottom': 25, |
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| 56 | 'chart.labels': null, |
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| 57 | 'chart.title': '', |
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| 58 | 'chart.title.background': null, |
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| 59 | 'chart.title.hpos': null, |
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| 60 | 'chart.title.vpos': null, |
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| 61 | 'chart.colors': ['red', 'green', 'gray', 'blue', 'black', 'gray'], |
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| 62 | 'chart.text.size': 10, |
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| 63 | 'chart.text.boxed': true, |
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| 64 | 'chart.text.halign': 'left', |
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| 65 | 'chart.text.color': 'black', |
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| 66 | 'chart.text.font': 'Verdana', |
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| 67 | 'chart.contextmenu': null, |
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| 68 | 'chart.shadow': false, |
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| 69 | 'chart.shadow.color': '#666', |
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| 70 | 'chart.shadow.blur': 3, |
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| 71 | 'chart.shadow.offsetx': 3, |
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| 72 | 'chart.shadow.offsety': 3, |
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| 73 | 'chart.key': [], |
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| 74 | 'chart.key.background': 'white', |
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| 75 | 'chart.key.position': 'graph', |
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| 76 | 'chart.key.halign': 'right', |
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| 77 | 'chart.key.shadow': false, |
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| 78 | 'chart.key.shadow.color': '#666', |
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| 79 | 'chart.key.shadow.blur': 3, |
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| 80 | 'chart.key.shadow.offsetx': 2, |
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| 81 | 'chart.key.shadow.offsety': 2, |
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| 82 | 'chart.key.position.gutter.boxed': true, |
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| 83 | 'chart.key.position.x': null, |
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| 84 | 'chart.key.position.y': null, |
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| 85 | 'chart.key.color.shape': 'square', |
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| 86 | 'chart.key.rounded': true, |
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| 87 | 'chart.key.linewidth': 1, |
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| 88 | 'chart.tooltips': null, |
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| 89 | 'chart.tooltips.effect': 'fade', |
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| 90 | 'chart.tooltips.css.class': 'RGraph_tooltip', |
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| 91 | 'chart.highlight.stroke': 'black', |
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| 92 | 'chart.highlight.fill': 'rgba(255,255,255,0.5)', |
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| 93 | 'chart.tooltips.highlight': true, |
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| 94 | 'chart.annotatable': false, |
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| 95 | 'chart.annotate.color': 'black', |
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| 96 | 'chart.zoom.factor': 1.5, |
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| 97 | 'chart.zoom.fade.in': true, |
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| 98 | 'chart.zoom.fade.out': true, |
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| 99 | 'chart.zoom.factor': 1.5, |
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| 100 | 'chart.zoom.fade.in': true, |
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| 101 | 'chart.zoom.fade.out': true, |
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| 102 | 'chart.zoom.hdir': 'right', |
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| 103 | 'chart.zoom.vdir': 'down', |
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| 104 | 'chart.zoom.frames': 10, |
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| 105 | 'chart.zoom.delay': 50, |
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| 106 | 'chart.zoom.shadow': true, |
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| 107 | 'chart.zoom.mode': 'canvas', |
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| 108 | 'chart.zoom.thumbnail.width': 75, |
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| 109 | 'chart.zoom.thumbnail.height': 75, |
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| 110 | 'chart.zoom.background': true, |
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| 111 | 'chart.zoom.action': 'zoom', |
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| 112 | 'chart.resizable': false, |
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| 113 | 'chart.resize.handle.adjust': [0,0], |
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| 114 | 'chart.resize.handle.background': null |
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| 115 | } |
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| 116 | |
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| 117 | // Store the data |
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| 118 | this.data = data; |
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| 119 | |
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| 120 | /** |
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| 121 | * Set the .getShape commonly named method |
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| 122 | */ |
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| 123 | this.getShape = this.getSegment; |
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| 124 | } |
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| 125 | |
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| 126 | |
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| 127 | /** |
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| 128 | * A setter |
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| 129 | * |
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| 130 | * @param name string The name of the property to set |
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| 131 | * @param value mixed The value of the property |
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| 132 | */ |
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| 133 | RGraph.Funnel.prototype.Set = function (name, value) |
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| 134 | { |
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| 135 | this.properties[name.toLowerCase()] = value; |
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| 136 | } |
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| 137 | |
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| 138 | |
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| 139 | /** |
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| 140 | * A getter |
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| 141 | * |
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| 142 | * @param name string The name of the property to get |
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| 143 | */ |
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| 144 | RGraph.Funnel.prototype.Get = function (name) |
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| 145 | { |
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| 146 | return this.properties[name.toLowerCase()]; |
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| 147 | } |
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| 148 | |
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| 149 | |
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| 150 | /** |
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| 151 | * The function you call to draw the bar chart |
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| 152 | */ |
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| 153 | RGraph.Funnel.prototype.Draw = function () |
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| 154 | { |
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| 155 | /** |
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| 156 | * Fire the onbeforedraw event |
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| 157 | */ |
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| 158 | RGraph.FireCustomEvent(this, 'onbeforedraw'); |
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| 159 | |
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| 160 | /** |
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| 161 | * Clear all of this canvases event handlers (the ones installed by RGraph) |
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| 162 | */ |
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| 163 | RGraph.ClearEventListeners(this.id); |
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| 164 | |
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| 165 | /** |
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| 166 | * This is new in May 2011 and facilitates indiviual gutter settings, |
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| 167 | * eg chart.gutter.left |
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| 168 | */ |
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| 169 | this.gutterLeft = this.Get('chart.gutter.left'); |
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| 170 | this.gutterRight = this.Get('chart.gutter.right'); |
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| 171 | this.gutterTop = this.Get('chart.gutter.top'); |
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| 172 | this.gutterBottom = this.Get('chart.gutter.bottom'); |
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| 173 | |
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| 174 | // This stops the coords array from growing |
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| 175 | this.coords = []; |
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| 176 | |
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| 177 | RGraph.DrawTitle(this.canvas, this.Get('chart.title'), this.gutterTop, null, this.Get('chart.text.size') + 2); |
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| 178 | this.DrawFunnel(); |
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| 179 | |
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| 180 | |
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| 181 | /** |
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| 182 | * Setup the context menu if required |
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| 183 | */ |
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| 184 | if (this.Get('chart.contextmenu')) { |
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| 185 | RGraph.ShowContext(this); |
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| 186 | } |
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| 187 | |
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| 188 | /** |
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| 189 | * The tooltip handler |
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| 190 | */ |
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| 191 | if (this.Get('chart.tooltips')) { |
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| 192 | |
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| 193 | RGraph.Register(this); |
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| 194 | |
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| 195 | var canvas_onclick_func = function (e) |
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| 196 | { |
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| 197 | RGraph.Redraw(); |
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| 198 | |
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| 199 | var e = RGraph.FixEventObject(e); |
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| 200 | var canvas = e.target; |
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| 201 | var context = canvas.getContext('2d'); |
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| 202 | var obj = canvas.__object__; |
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| 203 | |
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| 204 | var mouseCoords = RGraph.getMouseXY(e); |
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| 205 | var coords = obj.coords; |
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| 206 | var x = mouseCoords[0]; |
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| 207 | var y = mouseCoords[1]; |
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| 208 | var segment = obj.getSegment(e); |
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| 209 | |
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| 210 | if (segment) { |
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| 211 | |
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| 212 | var idx = segment[2]; |
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| 213 | |
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| 214 | // Is there a tooltip defined? |
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| 215 | if (!obj.Get('chart.tooltips')[idx] && typeof(obj.Get('chart.tooltips')) != 'function') { |
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| 216 | return; |
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| 217 | } |
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| 218 | |
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| 219 | context.beginPath(); |
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| 220 | |
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| 221 | RGraph.NoShadow(obj); |
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| 222 | |
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| 223 | context.strokeStyle = obj.Get('chart.highlight.stroke'); |
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| 224 | context.fillStyle = obj.Get('chart.highlight.fill'); |
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| 225 | |
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| 226 | context.moveTo(coords[idx][0], coords[idx][1]); |
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| 227 | context.lineTo(coords[idx][2], coords[idx][3]); |
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| 228 | context.lineTo(coords[idx][4], coords[idx][5]); |
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| 229 | context.lineTo(coords[idx][6], coords[idx][7]); |
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| 230 | context.closePath(); |
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| 231 | |
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| 232 | context.stroke(); |
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| 233 | context.fill(); |
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| 234 | |
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| 235 | /** |
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| 236 | * Draw the key again for in-graph keys so they don't appear "under" the highlight |
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| 237 | */ |
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| 238 | if (obj.Get('chart.key').length && obj.Get('chart.key.position') == 'graph') { |
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| 239 | RGraph.DrawKey(obj, obj.Get('chart.key'), obj.Get('chart.colors')); |
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| 240 | } |
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| 241 | |
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| 242 | /** |
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| 243 | * Redraw the labels if necessary |
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| 244 | */ |
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| 245 | if (obj.Get('chart.labels')) { |
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| 246 | obj.DrawLabels(); |
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| 247 | } |
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| 248 | |
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| 249 | /** |
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| 250 | * Get the tooltip text |
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| 251 | */ |
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| 252 | if (typeof(obj.Get('chart.tooltips')) == 'function') { |
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| 253 | var text = obj.Get('chart.tooltips')(idx); |
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| 254 | |
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| 255 | } else if (typeof(obj.Get('chart.tooltips')) == 'object' && typeof(obj.Get('chart.tooltips')[idx]) == 'function') { |
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| 256 | var text = obj.Get('chart.tooltips')[idx](idx); |
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| 257 | |
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| 258 | } else if (typeof(obj.Get('chart.tooltips')) == 'object') { |
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| 259 | var text = obj.Get('chart.tooltips')[idx]; |
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| 260 | |
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| 261 | } else { |
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| 262 | var text = ''; |
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| 263 | } |
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| 264 | |
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| 265 | // Show the tooltip |
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| 266 | RGraph.Tooltip(canvas, text, e.pageX, e.pageY, idx); |
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| 267 | |
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| 268 | // Stop the event propagating |
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| 269 | e.stopPropagation(); |
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| 270 | } |
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| 271 | } |
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| 272 | this.canvas.addEventListener('click', canvas_onclick_func, false); |
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| 273 | RGraph.AddEventListener(this.id, 'click', canvas_onclick_func); |
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| 274 | |
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| 275 | /** |
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| 276 | * Onmousemove event handler |
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| 277 | */ |
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| 278 | var canvas_onmousemove_func = function (e) |
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| 279 | { |
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| 280 | var e = RGraph.FixEventObject(e); |
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| 281 | |
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| 282 | var canvas = e.target; |
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| 283 | var context = canvas.getContext('2d'); |
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| 284 | var obj = canvas.__object__; |
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| 285 | var overFunnel = false; |
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| 286 | var coords = obj.coords; |
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| 287 | |
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| 288 | var mouseCoords = RGraph.getMouseXY(e); |
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| 289 | var x = mouseCoords[0]; |
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| 290 | var y = mouseCoords[1]; |
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| 291 | var segment = obj.getSegment(e); |
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| 292 | |
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| 293 | if (segment) { |
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| 294 | |
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| 295 | var idx = segment[2]; |
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| 296 | |
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| 297 | // Is there a tooltip defined? |
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| 298 | if (obj.Get('chart.tooltips')[idx] || typeof(obj.Get('chart.tooltips')) == 'function') { |
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| 299 | |
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| 300 | overFunnel = true; |
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| 301 | canvas.style.cursor = 'pointer'; |
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| 302 | |
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| 303 | // Stop the event propagating |
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| 304 | e.stopPropagation(); |
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| 305 | |
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| 306 | } |
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| 307 | } |
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| 308 | |
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| 309 | if (!overFunnel) { |
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| 310 | canvas.style.cursor = 'default'; |
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| 311 | canvas.style.cursor = 'default'; |
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| 312 | } |
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| 313 | } |
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| 314 | this.canvas.addEventListener('mousemove', canvas_onmousemove_func, false); |
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| 315 | RGraph.AddEventListener(this.id, 'mousemove', canvas_onmousemove_func); |
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| 316 | } |
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| 317 | |
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| 318 | |
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| 319 | /** |
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| 320 | * Draw the labels on the chart |
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| 321 | */ |
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| 322 | this.DrawLabels(); |
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| 323 | |
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| 324 | /** |
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| 325 | * If the canvas is annotatable, do install the event handlers |
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| 326 | */ |
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| 327 | if (this.Get('chart.annotatable')) { |
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| 328 | RGraph.Annotate(this); |
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| 329 | } |
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| 330 | |
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| 331 | /** |
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| 332 | * This bit shows the mini zoom window if requested |
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| 333 | */ |
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| 334 | if (this.Get('chart.zoom.mode') == 'thumbnail'|| this.Get('chart.zoom.mode') == 'area') { |
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| 335 | RGraph.ShowZoomWindow(this); |
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| 336 | } |
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| 337 | |
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| 338 | |
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| 339 | /** |
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| 340 | * This function enables resizing |
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| 341 | */ |
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| 342 | if (this.Get('chart.resizable')) { |
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| 343 | RGraph.AllowResizing(this); |
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| 344 | } |
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| 345 | |
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| 346 | /** |
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| 347 | * Fire the RGraph ondraw event |
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| 348 | */ |
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| 349 | RGraph.FireCustomEvent(this, 'ondraw'); |
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| 350 | } |
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| 351 | |
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| 352 | |
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| 353 | /** |
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| 354 | * This function actually draws the chart |
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| 355 | */ |
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| 356 | RGraph.Funnel.prototype.DrawFunnel = function () |
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| 357 | { |
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| 358 | var context = this.context; |
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| 359 | var canvas = this.canvas; |
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| 360 | var width = RGraph.GetWidth(this) - this.gutterLeft - this.gutterRight; |
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| 361 | var height = RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom; |
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| 362 | var total = RGraph.array_max(this.data); |
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| 363 | var accheight = this.gutterTop; |
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| 364 | |
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| 365 | |
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| 366 | /** |
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| 367 | * Loop through each segment to draw |
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| 368 | */ |
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| 369 | |
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| 370 | // Set a shadow if it's been requested |
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| 371 | if (this.Get('chart.shadow')) { |
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| 372 | context.shadowColor = this.Get('chart.shadow.color'); |
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| 373 | context.shadowBlur = this.Get('chart.shadow.blur'); |
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| 374 | context.shadowOffsetX = this.Get('chart.shadow.offsetx'); |
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| 375 | context.shadowOffsetY = this.Get('chart.shadow.offsety'); |
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| 376 | } |
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| 377 | |
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| 378 | for (i=0; i<this.data.length; ++i) { |
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| 379 | |
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| 380 | i = Number(i); |
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| 381 | |
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| 382 | var firstvalue = this.data[0]; |
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| 383 | var firstwidth = (firstvalue / total) * width; |
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| 384 | var curvalue = this.data[i]; |
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| 385 | var curwidth = (curvalue / total) * width; |
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| 386 | var curheight = height / this.data.length; |
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| 387 | var halfCurWidth = (curwidth / 2); |
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| 388 | var nextvalue = this.data[i + 1] ? this.data[i + 1] : 0; |
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| 389 | var nextwidth = this.data[i + 1] ? (nextvalue / total) * width : 0; |
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| 390 | var halfNextWidth = (nextwidth / 2); |
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| 391 | var center = this.gutterLeft + (firstwidth / 2); |
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| 392 | |
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| 393 | /** |
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| 394 | * First segment |
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| 395 | */ |
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| 396 | if (i == 0) { |
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| 397 | var x1 = center - halfCurWidth; |
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| 398 | var y1 = this.gutterTop; |
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| 399 | var x2 = center + halfCurWidth; |
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| 400 | var y2 = this.gutterTop; |
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| 401 | var x3 = center + halfNextWidth; |
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| 402 | var y3 = accheight + curheight; |
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| 403 | var x4 = center - halfNextWidth; |
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| 404 | var y4 = accheight + curheight; |
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| 405 | |
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| 406 | /** |
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| 407 | * Subsequent segments |
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| 408 | */ |
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| 409 | } else { |
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| 410 | var x1 = center - halfCurWidth; |
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| 411 | var y1 = accheight; |
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| 412 | var x2 = center + halfCurWidth; |
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| 413 | var y2 = accheight; |
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| 414 | var x3 = center + halfNextWidth; |
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| 415 | var y3 = accheight + curheight; |
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| 416 | var x4 = center - halfNextWidth; |
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| 417 | var y4 = accheight + curheight; |
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| 418 | } |
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| 419 | |
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| 420 | /** |
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| 421 | * Set the fill colour. If i is over 0 then don't use an offset |
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| 422 | */ |
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| 423 | if (document.all && this.Get('chart.shadow')) { |
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| 424 | this.DrawIEShadow([x1, y1, x2, y2, x3, y3, x4, y4], i > 0 && this.Get('chart.shadow.offsety') < 0); |
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| 425 | } |
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| 426 | |
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| 427 | context.strokeStyle = this.Get('chart.strokestyle'); |
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| 428 | context.fillStyle = this.Get('chart.colors')[i]; |
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| 429 | |
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| 430 | context.beginPath(); |
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| 431 | context.moveTo(x1, y1); |
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| 432 | context.lineTo(x2, y2); |
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| 433 | context.lineTo(x3, y3); |
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| 434 | context.lineTo(x4, y4); |
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| 435 | context.closePath(); |
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| 436 | |
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| 437 | /** |
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| 438 | * Store the coordinates |
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| 439 | */ |
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| 440 | this.coords.push([x1, y1, x2, y2, x3, y3, x4, y4]); |
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| 441 | |
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| 442 | // The redrawing if the shadow is on will do the stroke |
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| 443 | if (!this.Get('chart.shadow')) { |
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| 444 | context.stroke(); |
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| 445 | } |
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| 446 | |
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| 447 | context.fill(); |
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| 448 | |
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| 449 | accheight += curheight; |
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| 450 | } |
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| 451 | |
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| 452 | /** |
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| 453 | * If the shadow is enabled, redraw every segment, in order to allow for shadows going upwards |
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| 454 | */ |
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| 455 | if (this.Get('chart.shadow')) { |
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| 456 | |
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| 457 | RGraph.NoShadow(this); |
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| 458 | |
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| 459 | for (i=0; i<this.coords.length; ++i) { |
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| 460 | |
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| 461 | context.strokeStyle = this.Get('chart.strokestyle'); |
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| 462 | context.fillStyle = this.Get('chart.colors')[i]; |
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| 463 | |
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| 464 | context.beginPath(); |
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| 465 | context.moveTo(this.coords[i][0], this.coords[i][1]); |
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| 466 | context.lineTo(this.coords[i][2], this.coords[i][3]); |
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| 467 | context.lineTo(this.coords[i][4], this.coords[i][5]); |
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| 468 | context.lineTo(this.coords[i][6], this.coords[i][7]); |
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| 469 | context.closePath(); |
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| 470 | |
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| 471 | context.stroke(); |
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| 472 | context.fill(); |
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| 473 | } |
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| 474 | } |
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| 475 | |
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| 476 | /** |
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| 477 | * Lastly, draw the key if necessary |
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| 478 | */ |
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| 479 | if (this.Get('chart.key') && this.Get('chart.key').length) { |
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| 480 | RGraph.DrawKey(this, this.Get('chart.key'), this.Get('chart.colors')); |
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| 481 | } |
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| 482 | } |
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| 483 | |
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| 484 | /** |
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| 485 | * Draws the labels |
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| 486 | */ |
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| 487 | RGraph.Funnel.prototype.DrawLabels = function () |
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| 488 | { |
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| 489 | /** |
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| 490 | * Draws the labels |
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| 491 | */ |
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| 492 | if (this.Get('chart.labels') && this.Get('chart.labels').length > 0) { |
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| 493 | |
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| 494 | var context = this.context; |
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| 495 | |
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| 496 | for (var j=0; j<this.coords.length; ++j) { // MUST be "j" |
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| 497 | context.beginPath(); |
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| 498 | |
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| 499 | // Set the color back to black |
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| 500 | context.strokeStyle = 'black'; |
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| 501 | context.fillStyle = this.Get('chart.text.color'); |
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| 502 | |
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| 503 | // Turn off any shadow |
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| 504 | RGraph.NoShadow(this); |
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| 505 | |
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| 506 | var label = this.Get('chart.labels')[j]; |
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| 507 | |
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| 508 | RGraph.Text(context, |
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| 509 | this.Get('chart.text.font'), |
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| 510 | this.Get('chart.text.size'), |
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| 511 | this.Get('chart.text.halign') == 'left' ? (this.gutterLeft - 15) : ((this.canvas.width - this.gutterLeft - this.gutterRight) / 2) + this.gutterLeft, |
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| 512 | this.coords[j][1], |
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| 513 | label, |
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| 514 | 'center', |
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| 515 | this.Get('chart.text.halign') == 'left' ? 'left' : 'center', |
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| 516 | true, |
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| 517 | null, |
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| 518 | this.Get('chart.text.boxed') ? 'white' : null); |
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| 519 | } |
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| 520 | } |
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| 521 | } |
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| 522 | |
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| 523 | |
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| 524 | /** |
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| 525 | * This function is used by MSIE only to manually draw the shadow |
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| 526 | * |
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| 527 | * @param array coords The coords for the bar |
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| 528 | */ |
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| 529 | RGraph.Funnel.prototype.DrawIEShadow = function (coords, noOffset) |
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| 530 | { |
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| 531 | var prevFillStyle = this.context.fillStyle; |
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| 532 | var offsetx = this.Get('chart.shadow.offsetx'); |
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| 533 | var offsety = this.Get('chart.shadow.offsety'); |
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| 534 | var context = this.context; |
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| 535 | |
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| 536 | context.lineWidth = 1; |
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| 537 | context.fillStyle = this.Get('chart.shadow.color'); |
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| 538 | |
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| 539 | // Draw the shadow |
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| 540 | context.beginPath(); |
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| 541 | context.moveTo(coords[0] + (noOffset ? 0 : offsetx), coords[1] + (noOffset ? 0 : offsety)); |
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| 542 | context.lineTo(coords[2] + (noOffset ? 0 : offsetx), coords[3] + (noOffset ? 0 : offsety)); |
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| 543 | context.lineTo(coords[4] + (noOffset ? 0 : offsetx), coords[5] + (noOffset ? 0 : offsety)); |
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| 544 | context.lineTo(coords[6] + (noOffset ? 0 : offsetx), coords[7] + (noOffset ? 0 : offsety)); |
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| 545 | context.closePath(); |
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| 546 | |
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| 547 | context.fill(); |
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| 548 | |
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| 549 | |
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| 550 | |
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| 551 | // Change the fillstyle back to what it was |
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| 552 | this.context.fillStyle = prevFillStyle; |
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| 553 | } |
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| 554 | |
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| 555 | |
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| 556 | /** |
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| 557 | * Gets the appropriate segment that has been highlighted |
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| 558 | */ |
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| 559 | RGraph.Funnel.prototype.getSegment = function (e) |
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| 560 | { |
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| 561 | var canvas = e.target; |
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| 562 | var obj = canvas.__object__; |
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| 563 | var mouseCoords = RGraph.getMouseXY(e); |
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| 564 | var coords = obj.coords; |
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| 565 | var x = mouseCoords[0]; |
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| 566 | var y = mouseCoords[1]; |
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| 567 | |
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| 568 | |
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| 569 | |
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| 570 | for (i=0; i<coords.length; ++i) { |
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| 571 | if ( |
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| 572 | x > coords[i][0] |
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| 573 | && x < coords[i][2] |
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| 574 | && y > coords[i][1] |
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| 575 | && y < coords[i][5] |
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| 576 | ) { |
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| 577 | |
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| 578 | /** |
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| 579 | * Handle the right corner |
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| 580 | */ |
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| 581 | if (x > coords[i][4]) { |
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| 582 | var w1 = coords[i][2] - coords[i][4]; |
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| 583 | var h1 = coords[i][5] - coords[i][3];; |
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| 584 | var a1 = Math.atan(h1 / w1) * 57.3; // DEGREES |
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| 585 | |
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| 586 | var w2 = coords[i][2] - mouseCoords[0]; |
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| 587 | var h2 = mouseCoords[1] - coords[i][1]; |
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| 588 | var a2 = Math.atan(h2 / w2) * 57.3; // DEGREES |
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| 589 | |
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| 590 | if (a2 > a1) { |
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| 591 | continue; |
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| 592 | } |
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| 593 | |
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| 594 | /** |
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| 595 | * Handle the left corner |
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| 596 | */ |
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| 597 | } else if (x < coords[i][6]) { |
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| 598 | var w1 = coords[i][6] - coords[i][0]; |
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| 599 | var h1 = coords[i][7] - coords[i][1];; |
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| 600 | var a1 = Math.atan(h1 / w1) * 57.3; // DEGREES |
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| 601 | |
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| 602 | var w2 = mouseCoords[0] - coords[i][0]; |
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| 603 | var h2 = mouseCoords[1] - coords[i][1]; |
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| 604 | var a2 = Math.atan(h2 / w2) * 57.3; // DEGREES |
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| 605 | |
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| 606 | if (a2 > a1) { |
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| 607 | continue; |
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| 608 | } |
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| 609 | } |
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| 610 | |
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| 611 | return [obj, coords[i], i]; |
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| 612 | } |
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| 613 | } |
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| 614 | |
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| 615 | return null; |
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| 616 | } |
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