Simon Hunt | fb8ea1f | 2015-02-24 21:38:09 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2015 Open Networking Laboratory |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | /* |
| 18 | ONOS GUI -- Topology Link Module. |
| 19 | Functions for highlighting/selecting links |
| 20 | */ |
| 21 | |
| 22 | (function () { |
| 23 | 'use strict'; |
| 24 | |
| 25 | // injected refs |
| 26 | var $log, fs, sus, ts; |
| 27 | |
| 28 | var api, |
| 29 | network, |
| 30 | enhancedLink = null; // the link which the mouse is hovering over |
| 31 | |
| 32 | // SVG elements; |
| 33 | var svg, mouseG; |
| 34 | |
| 35 | |
| 36 | // ======== ALGORITHM TO FIND LINK CLOSEST TO MOUSE ======== |
| 37 | |
| 38 | function setupMouse(forceG, zoomer) { |
| 39 | $log.debug('set up mouse handlers for mouse move'); |
| 40 | mouseG = forceG.append('g').attr('id', 'topo-mouse'); |
| 41 | //mouseG.append('circle') |
| 42 | // .attr({ |
| 43 | // r: 5, |
| 44 | // opacity: 0 |
| 45 | // }) |
| 46 | // .style('fill', 'red'); |
| 47 | |
| 48 | svg.on('mouseenter', function () { |
| 49 | //$log.log('M--ENTER'); |
| 50 | //mouseG.selectAll('circle').attr('opacity', 1); |
| 51 | }) |
| 52 | .on('mouseleave', function () { |
| 53 | //$log.log('M--LEAVE'); |
| 54 | //mouseG.selectAll('circle').attr('opacity', 0); |
| 55 | }) |
| 56 | .on('mousemove', function () { |
| 57 | var m = d3.mouse(this), |
| 58 | sc = zoomer.scale(), |
| 59 | tr = zoomer.translate(), |
| 60 | mx = (m[0] - tr[0]) / sc, |
| 61 | my = (m[1] - tr[1]) / sc; |
| 62 | |
| 63 | //$log.log('M--MOVE', m); |
| 64 | |
| 65 | //mouseG.selectAll('circle') |
| 66 | // .attr({ |
| 67 | // cx: mx, |
| 68 | // cy: my |
| 69 | // }); |
| 70 | updatePerps({x: mx, y: my}, zoomer); |
| 71 | }); |
| 72 | } |
| 73 | |
| 74 | function updatePerps(mouse, zoomer) { |
| 75 | var proximity = 30 / zoomer.scale(), |
| 76 | perpData, perps, nearest, minDist; |
| 77 | |
| 78 | function sq(x) { return x * x; } |
| 79 | |
| 80 | function pdrop(line, mouse) { |
| 81 | var x1 = line.x1, |
| 82 | y1 = line.y1, |
| 83 | x2 = line.x2, |
| 84 | y2 = line.y2, |
| 85 | x3 = mouse.x, |
| 86 | y3 = mouse.y, |
| 87 | k = ((y2-y1) * (x3-x1) - (x2-x1) * (y3-y1)) / |
| 88 | (sq(y2-y1) + sq(x2-x1)), |
| 89 | x4 = x3 - k * (y2-y1), |
| 90 | y4 = y3 + k * (x2-x1); |
| 91 | return {x:x4, y:y4}; |
| 92 | } |
| 93 | |
| 94 | function mdist(p, m) { |
| 95 | return Math.sqrt(sq(p.x - m.x) + sq(p.y - m.y)); |
| 96 | } |
| 97 | |
| 98 | function lineSeg(d) { |
| 99 | return { |
| 100 | x1: d.source.x, |
| 101 | y1: d.source.y, |
| 102 | x2: d.target.x, |
| 103 | y2: d.target.y |
| 104 | }; |
| 105 | } |
| 106 | |
| 107 | function lineHit(line, p, m) { |
| 108 | if (p.x < line.x1 && p.x < line.x2) return false; |
| 109 | if (p.x > line.x1 && p.x > line.x2) return false; |
| 110 | if (p.y < line.y1 && p.y < line.y2) return false; |
| 111 | if (p.y > line.y1 && p.y > line.y2) return false; |
Simon Hunt | 5f36108 | 2015-02-25 11:36:38 -0800 | [diff] [blame] | 112 | // line intersects, but are we close enough? |
Simon Hunt | fb8ea1f | 2015-02-24 21:38:09 -0800 | [diff] [blame] | 113 | return mdist(p, m) <= proximity; |
| 114 | } |
| 115 | |
| 116 | if (network.links.length) { |
| 117 | perpData = []; |
| 118 | nearest = null; |
| 119 | minDist = proximity * 2; |
| 120 | |
| 121 | network.links.forEach(function (d) { |
| 122 | if (!api.showHosts() && d.type() === 'hostLink') { |
| 123 | return; // skip hidden host links |
| 124 | } |
| 125 | |
| 126 | var line = lineSeg(d), |
| 127 | point = pdrop(line, mouse), |
| 128 | hit = lineHit(line, point, mouse), |
| 129 | dist; |
| 130 | |
| 131 | if (hit) { |
| 132 | dist = mdist(point, mouse); |
| 133 | if (dist < minDist) { |
| 134 | minDist = dist; |
| 135 | nearest = d; |
| 136 | } |
| 137 | /* |
| 138 | perpData.push({ |
| 139 | key: d.key, |
| 140 | x1: mouse.x, |
| 141 | y1: mouse.y, |
| 142 | x2: point.x, |
| 143 | y2: point.y |
| 144 | }); |
| 145 | */ |
| 146 | } |
| 147 | }); |
| 148 | |
| 149 | /* |
| 150 | perps = mouseG.selectAll('line') |
| 151 | .data(perpData, function (d) { return d.key; }) |
| 152 | .attr({ |
| 153 | x1: function (d) { return d.x1; }, |
| 154 | y1: function (d) { return d.y1; }, |
| 155 | x2: function (d) { return d.x2; }, |
| 156 | y2: function (d) { return d.y2; } |
| 157 | }); |
| 158 | |
| 159 | perps.enter().append('line') |
| 160 | .attr({ |
| 161 | x1: function (d) { return d.x1; }, |
| 162 | y1: function (d) { return d.y1; }, |
| 163 | x2: function (d) { return d.x2; }, |
| 164 | y2: function (d) { return d.y2; } |
| 165 | }) |
| 166 | .style('stroke-width', 2) |
| 167 | .style('stroke', 'limegreen'); |
| 168 | |
| 169 | perps.exit().remove(); |
| 170 | */ |
| 171 | |
| 172 | enhanceNearestLink(nearest); |
| 173 | } |
| 174 | } |
| 175 | |
| 176 | |
| 177 | function enhanceNearestLink(ldata) { |
| 178 | // if the new link is same as old link, do nothing |
| 179 | if (enhancedLink && ldata && enhancedLink.key === ldata.key) return; |
| 180 | |
| 181 | // first, unenhance the currently enhanced link |
| 182 | if (enhancedLink) { |
| 183 | unenhance(enhancedLink); |
| 184 | } |
| 185 | enhancedLink = ldata; |
| 186 | if (enhancedLink) { |
| 187 | enhance(enhancedLink); |
| 188 | } |
| 189 | } |
| 190 | |
| 191 | function unenhance(d) { |
Simon Hunt | d526412 | 2015-02-25 10:17:43 -0800 | [diff] [blame] | 192 | d.el.classed('enhanced', false); |
Simon Hunt | fb8ea1f | 2015-02-24 21:38:09 -0800 | [diff] [blame] | 193 | } |
| 194 | |
| 195 | function enhance(d) { |
Simon Hunt | d526412 | 2015-02-25 10:17:43 -0800 | [diff] [blame] | 196 | d.el.classed('enhanced', true); |
Simon Hunt | 5f36108 | 2015-02-25 11:36:38 -0800 | [diff] [blame] | 197 | $log.debug('[' + (d.srcPort || 'H') + '] ---> [' + d.tgtPort + ']', d.key); |
Simon Hunt | fb8ea1f | 2015-02-24 21:38:09 -0800 | [diff] [blame] | 198 | } |
| 199 | |
| 200 | |
| 201 | |
| 202 | |
| 203 | // ========================== |
| 204 | // Module definition |
| 205 | |
| 206 | angular.module('ovTopo') |
| 207 | .factory('TopoLinkService', |
| 208 | ['$log', 'FnService', 'SvgUtilService', 'ThemeService', |
| 209 | |
| 210 | function (_$log_, _fs_, _sus_, _ts_) { |
| 211 | $log = _$log_; |
| 212 | fs = _fs_; |
| 213 | sus = _sus_; |
| 214 | ts = _ts_; |
| 215 | |
| 216 | function initLink(_api_) { |
| 217 | api = _api_; |
| 218 | svg = api.svg; |
| 219 | network = api.network; |
| 220 | setupMouse(api.forceG, api.zoomer); |
| 221 | } |
| 222 | |
| 223 | function destroyLink() { |
| 224 | svg.on('mouseenter', null) |
| 225 | .on('mouseleave', null) |
| 226 | .on('mousemove', null); |
| 227 | } |
| 228 | |
| 229 | return { |
| 230 | initLink: initLink, |
| 231 | destroyLink: destroyLink |
| 232 | }; |
| 233 | }]); |
| 234 | }()); |