labellayer.js ➔ define - Code Metrics - Inspection of "[TASK] Move layer genertation to layer" - ffrgb/meshviewer - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — develop (#128)

by Xaver

created 2017-04-25 20:42 UTC

labellayer.js ➔ define B

↳ Parent: Project

Complexity

Conditions	1
Paths	2

Size

Total Lines

235

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
cc	1
c	1
b	0
f	0
nc	2
dl	0
loc	235
rs	8.2857
nop	3

How to fix Long Method

define(['leaflet', 'rbush', 'helper', 'moment'],
  function (L, rbush, helper, moment) {
    'use strict';

    var groupOnline;
    var groupOffline;
    var groupNew;
    var groupLost;
    var groupLines;


    var labelLocations = [['left', 'middle', 0 / 8],
      ['center', 'top', 6 / 8],
      ['right', 'middle', 4 / 8],
      ['left', 'top', 7 / 8],
      ['left', 'ideographic', 1 / 8],
      ['right', 'top', 5 / 8],
      ['center', 'ideographic', 2 / 8],
      ['right', 'ideographic', 3 / 8]];
    var labelShadow;
    var bodyStyle = { fontFamily: 'sans-serif' };
    var nodeRadius = 4;

    var cFont = document.createElement('canvas').getContext('2d');

    function measureText(font, text) {
      cFont.font = font;
      return cFont.measureText(text);
    }

    function mapRTree(d) {
      return { minX: d.position.lat, minY: d.position.lng, maxX: d.position.lat, maxY: d.position.lng, label: d };
    }

    function prepareLabel(fillStyle, fontSize, offset, stroke) {
      return function (d) {
        var font = fontSize + 'px ' + bodyStyle.fontFamily;
        return {
          position: L.latLng(d.nodeinfo.location.latitude, d.nodeinfo.location.longitude),
          label: d.nodeinfo.hostname,
          offset: offset,
          fillStyle: fillStyle,
          height: fontSize * 1.2,
          font: font,
          stroke: stroke,
          width: measureText(font, d.nodeinfo.hostname).width
        };
      };
    }

    function calcOffset(offset, loc) {
      return [offset * Math.cos(loc[2] * 2 * Math.PI),
    // offset * Math.sin(loc[2] * 2 * Math.PI)];
    }

    function labelRect(p, offset, anchor, label, minZoom, maxZoom, z) {
      var margin = 1 + 1.41 * (1 - (z - minZoom) / (maxZoom - minZoom));

      var width = label.width * margin;
      var height = label.height * margin;

      var dx = {
        left: 0,
        right: -width,
        center: -width / 2
      };

      var dy = {
        top: 0,
        ideographic: -height,
        middle: -height / 2
      };

      var x = p.x + offset[0] + dx[anchor[0]];
      var y = p.y + offset[1] + dy[anchor[1]];

      return { minX: x, minY: y, maxX: x + width, maxY: y + height };
    }

    function mkMarker(dict, iconFunc, router) {
      return function (d) {
        var m = L.circleMarker([d.nodeinfo.location.latitude, d.nodeinfo.location.longitude], iconFunc(d));

        m.resetStyle = function resetStyle() {
          m.setStyle(iconFunc(d));
        };

        m.on('click', function () {
          router.fullUrl({ node: d.nodeinfo.node_id });
        });
        m.bindTooltip(d.nodeinfo.hostname);

        dict[d.nodeinfo.node_id] = m;

        return m;
      };
    }

    function addLinksToMap(dict, linkScale, graph, router) {
      graph = graph.filter(function (d) {
        return 'distance' in d && !d.vpn;
      });

      return graph.map(function (d) {
        var opts = {
          color: linkScale(1 / d.tq),
          weight: 4,
          opacity: 0.5,
          dashArray: 'none'
        };

        var line = L.polyline(d.latlngs, opts);

        line.resetStyle = function resetStyle() {
          line.setStyle(opts);
        };

        line.bindTooltip(d.source.node.nodeinfo.hostname + ' – ' + d.target.node.nodeinfo.hostname + '<br><strong>' + helper.showDistance(d) + ' / ' + helper.showTq(d) + '</strong>');
        line.on('click', function () {
          router.fullUrl({ link: d.id });
        });

        dict[d.id] = line;

        return line;
      });
    }

    function getIcon(config, color) {
      Object.assign({}, config.icon.base, config.icon[color]);
    }

    return L.GridLayer.extend({
      onAdd: function (map) {
        L.GridLayer.prototype.onAdd.call(this, map);
        if (this.data) {
          this.prepareLabels();
        }
      },
      setData: function (data, map, nodeDict, linkDict, linkScale, router, config) {
        var iconOnline = getIcon(config, 'online');
        var iconOffline =getIcon(config, 'offline');
        var iconLost = getIcon(config, 'lost');
        var iconAlert = getIcon(config, 'alert');
        var iconNew = getIcon(config, 'new');
        // Check if init or data is already set
        if (groupLines) {
          groupOffline.clearLayers();
          groupOnline.clearLayers();
          groupNew.clearLayers();
          groupLost.clearLayers();
          groupLines.clearLayers();
        }

        var lines = addLinksToMap(linkDict, linkScale, data.graph.links, router);
        groupLines = L.featureGroup(lines).addTo(map);

        var nodesOnline = helper.subtract(data.nodes.all.filter(helper.online), data.nodes.new);
        var nodesOffline = helper.subtract(data.nodes.all.filter(helper.offline), data.nodes.lost);

        var markersOnline = nodesOnline.filter(helper.hasLocation)
          .map(mkMarker(nodeDict, function () {
            return iconOnline;
          }, router));

        var markersOffline = nodesOffline.filter(helper.hasLocation)
          .map(mkMarker(nodeDict, function () {
            return iconOffline;
          }, router));

        var markersNew = data.nodes.new.filter(helper.hasLocation)
          .map(mkMarker(nodeDict, function () {
            return iconNew;
          }, router));

        var markersLost = data.nodes.lost.filter(helper.hasLocation)
          .map(mkMarker(nodeDict, function (d) {
            if (d.lastseen.isAfter(moment(data.now).subtract(config.maxAgeAlert, 'days'))) {
              return iconAlert;
            }

            if (d.lastseen.isAfter(moment(data.now).subtract(config.maxAge, 'days'))) {
              return iconLost;
            }
            return null;
          }, router));

        groupOffline = L.featureGroup(markersOffline).addTo(map);
        groupLost = L.featureGroup(markersLost).addTo(map);
        groupOnline = L.featureGroup(markersOnline).addTo(map);
        groupNew = L.featureGroup(markersNew).addTo(map);

        this.data = {
          online: nodesOnline.filter(helper.hasLocation),
          offline: nodesOffline.filter(helper.hasLocation),
          new: data.nodes.new.filter(helper.hasLocation),
          lost: data.nodes.lost.filter(helper.hasLocation)
        };
        this.updateLayer();
      },
      updateLayer: function () {
        if (this._map) {
          this.prepareLabels();
        }
      },
      prepareLabels: function () {
        var d = this.data;

        // label:
        // - position (WGS84 coords)
        // - offset (2D vector in pixels)
        // - anchor (tuple, textAlignment, textBaseline)
        // - minZoom (inclusive)
        // - label (string)
        // - color (string)

        var labelsOnline = d.online.map(prepareLabel(null, 11, 8, true));
        var labelsOffline = d.offline.map(prepareLabel('rgba(212, 62, 42, 0.9)', 9, 5, false));
        var labelsNew = d.new.map(prepareLabel('rgba(48, 99, 20, 0.9)', 11, 8, true));
        var labelsLost = d.lost.map(prepareLabel('rgba(212, 62, 42, 0.9)', 11, 8, true));

        var labels = []
          .concat(labelsNew)
          .concat(labelsLost)
          .concat(labelsOnline)
          .concat(labelsOffline);

        var minZoom = this.options.minZoom;
        var maxZoom = this.options.maxZoom;

        var trees = [];

        var map = this._map;

        function nodeToRect(z) {
          return function (n) {
            var p = map.project(n.position, z);
            return { minX: p.x - nodeRadius, minY: p.y - nodeRadius, maxX: p.x + nodeRadius, maxY: p.y + nodeRadius };
          };
        }

        for (var z = minZoom; z <= maxZoom; z++) {
          trees[z] = rbush(9);
          trees[z].load(labels.map(nodeToRect(z)));
        }

        labels = labels.map(function (n) {
          var best = labelLocations.map(function (loc) {
            var offset = calcOffset(n.offset, loc);
            var i;

            for (i = maxZoom; i >= minZoom; i--) {
              var p = map.project(n.position, i);
              var rect = labelRect(p, offset, loc, n, minZoom, maxZoom, i);
              var candidates = trees[i].search(rect);

              if (candidates.length > 0) {
                break;
              }
            }

            return { loc: loc, z: i + 1 };
          }).filter(function (k) {
            return k.z <= maxZoom;
          }).sort(function (a, b) {
            return a.z - b.z;
          })[0];

          if (best !== undefined) {
            n.offset = calcOffset(n.offset, best.loc);
            n.minZoom = best.z;
            n.anchor = best.loc;

            for (var i = maxZoom; i >= best.z; i--) {
              var p = map.project(n.position, i);
              var rect = labelRect(p, n.offset, best.loc, n, minZoom, maxZoom, i);
              trees[i].insert(rect);
            }

            return n;
          }
          return undefined;
        }).filter(function (n) {
          return n !== undefined;
        });

        this.margin = 16;

        if (labels.length > 0) {
          this.margin += labels.map(function (n) {
            return n.width;
          }).sort().reverse()[0];
        }

        this.labels = rbush(9);
        this.labels.load(labels.map(mapRTree));

        this.redraw();
      },
      createTile: function (tilePoint) {
        var tile = L.DomUtil.create('canvas', 'leaflet-tile');

        var tileSize = this.options.tileSize;
        tile.width = tileSize;
        tile.height = tileSize;

        if (!this.labels) {
          return tile;
        }

        var s = tilePoint.multiplyBy(tileSize);
        var map = this._map;
        bodyStyle = window.getComputedStyle(document.querySelector('body'));
        labelShadow = bodyStyle.backgroundColor.replace(/rgb/i, 'rgba').replace(/\)/i, ',0.7)');

        function projectNodes(d) {
          var p = map.project(d.label.position);

          p.x -= s.x;
          p.y -= s.y;

          return { p: p, label: d.label };
        }

        var bbox = helper.getTileBBox(s, map, tileSize, this.margin);
        var labels = this.labels.search(bbox).map(projectNodes);
        var ctx = tile.getContext('2d');

        ctx.lineWidth = 5;
        ctx.strokeStyle = labelShadow;
        ctx.miterLimit = 2;

        function drawLabel(d) {
          ctx.font = d.label.font;
          ctx.textAlign = d.label.anchor[0];
          ctx.textBaseline = d.label.anchor[1];
          ctx.fillStyle = d.label.fillStyle === null ? bodyStyle.color : d.label.fillStyle;

          if (d.label.stroke) {
            ctx.strokeText(d.label.label, d.p.x + d.label.offset[0], d.p.y + d.label.offset[1]);
          }

          ctx.fillText(d.label.label, d.p.x + d.label.offset[0], d.p.y + d.label.offset[1]);
        }

        labels.filter(function (d) {
          return tilePoint.z >= d.label.minZoom;
        }).forEach(drawLabel);

        return tile;
      }
    });
  });


1			define(['leaflet', 'rbush', 'helper', 'moment'],
2			function (L, rbush, helper, moment) {
3			'use strict';
4
5			var groupOnline;
6			var groupOffline;
7			var groupNew;
8			var groupLost;
9			var groupLines;
10
11
12			var labelLocations = [['left', 'middle', 0 / 8],
13			['center', 'top', 6 / 8],
14			['right', 'middle', 4 / 8],
15			['left', 'top', 7 / 8],
16			['left', 'ideographic', 1 / 8],
17			['right', 'top', 5 / 8],
18			['center', 'ideographic', 2 / 8],
19			['right', 'ideographic', 3 / 8]];
20			var labelShadow;
21			var bodyStyle = { fontFamily: 'sans-serif' };
22			var nodeRadius = 4;
23
24			var cFont = document.createElement('canvas').getContext('2d');
25
26			function measureText(font, text) {
27			cFont.font = font;
28			return cFont.measureText(text);
29			}
30
31			function mapRTree(d) {
32			return { minX: d.position.lat, minY: d.position.lng, maxX: d.position.lat, maxY: d.position.lng, label: d };
33			}
34
35			function prepareLabel(fillStyle, fontSize, offset, stroke) {
36			return function (d) {
37			var font = fontSize + 'px ' + bodyStyle.fontFamily;
38			return {
39			position: L.latLng(d.nodeinfo.location.latitude, d.nodeinfo.location.longitude),
40			label: d.nodeinfo.hostname,
41			offset: offset,
42			fillStyle: fillStyle,
43			height: fontSize * 1.2,
44			font: font,
45			stroke: stroke,
46			width: measureText(font, d.nodeinfo.hostname).width
47			};
48			};
49			}
50
51			function calcOffset(offset, loc) {
52			return [offset * Math.cos(loc[2] * 2 * Math.PI),
53			// offset * Math.sin(loc[2] * 2 * Math.PI)];
54			}
55
56			function labelRect(p, offset, anchor, label, minZoom, maxZoom, z) {
57			var margin = 1 + 1.41 * (1 - (z - minZoom) / (maxZoom - minZoom));
58
59			var width = label.width * margin;
60			var height = label.height * margin;
61
62			var dx = {
63			left: 0,
64			right: -width,
65			center: -width / 2
66			};
67
68			var dy = {
69			top: 0,
70			ideographic: -height,
71			middle: -height / 2
72			};
73
74			var x = p.x + offset[0] + dx[anchor[0]];
75			var y = p.y + offset[1] + dy[anchor[1]];
76
77			return { minX: x, minY: y, maxX: x + width, maxY: y + height };
78			}
79
80			function mkMarker(dict, iconFunc, router) {
81			return function (d) {
82			var m = L.circleMarker([d.nodeinfo.location.latitude, d.nodeinfo.location.longitude], iconFunc(d));
83
84			m.resetStyle = function resetStyle() {
85			m.setStyle(iconFunc(d));
86			};
87
88			m.on('click', function () {
89			router.fullUrl({ node: d.nodeinfo.node_id });
90			});
91			m.bindTooltip(d.nodeinfo.hostname);
92
93			dict[d.nodeinfo.node_id] = m;
94
95			return m;
96			};
97			}
98
99			function addLinksToMap(dict, linkScale, graph, router) {
100			graph = graph.filter(function (d) {
101			return 'distance' in d && !d.vpn;
102			});
103
104			return graph.map(function (d) {
105			var opts = {
106			color: linkScale(1 / d.tq),
107			weight: 4,
108			opacity: 0.5,
109			dashArray: 'none'
110			};
111
112			var line = L.polyline(d.latlngs, opts);
113
114			line.resetStyle = function resetStyle() {
115			line.setStyle(opts);
116			};
117
118			line.bindTooltip(d.source.node.nodeinfo.hostname + ' – ' + d.target.node.nodeinfo.hostname + '<br><strong>' + helper.showDistance(d) + ' / ' + helper.showTq(d) + '</strong>');
119			line.on('click', function () {
120			router.fullUrl({ link: d.id });
121			});
122
123			dict[d.id] = line;
124
125			return line;
126			});
127			}
128
129			function getIcon(config, color) {
130			Object.assign({}, config.icon.base, config.icon[color]);
131			}
132
133			return L.GridLayer.extend({
134			onAdd: function (map) {
135			L.GridLayer.prototype.onAdd.call(this, map);
136			if (this.data) {
137			this.prepareLabels();
138			}
139			},
140			setData: function (data, map, nodeDict, linkDict, linkScale, router, config) {
141			var iconOnline = getIcon(config, 'online');
142			var iconOffline =getIcon(config, 'offline');
143			var iconLost = getIcon(config, 'lost');
144			var iconAlert = getIcon(config, 'alert');
145			var iconNew = getIcon(config, 'new');
146			// Check if init or data is already set
147			if (groupLines) {
148			groupOffline.clearLayers();
149			groupOnline.clearLayers();
150			groupNew.clearLayers();
151			groupLost.clearLayers();
152			groupLines.clearLayers();
153			}
154
155			var lines = addLinksToMap(linkDict, linkScale, data.graph.links, router);
156			groupLines = L.featureGroup(lines).addTo(map);
157
158			var nodesOnline = helper.subtract(data.nodes.all.filter(helper.online), data.nodes.new);
159			var nodesOffline = helper.subtract(data.nodes.all.filter(helper.offline), data.nodes.lost);
160
161			var markersOnline = nodesOnline.filter(helper.hasLocation)
162			.map(mkMarker(nodeDict, function () {
163			return iconOnline;
164			}, router));
165
166			var markersOffline = nodesOffline.filter(helper.hasLocation)
167			.map(mkMarker(nodeDict, function () {
168			return iconOffline;
169			}, router));
170
171			var markersNew = data.nodes.new.filter(helper.hasLocation)
172			.map(mkMarker(nodeDict, function () {
173			return iconNew;
174			}, router));
175
176			var markersLost = data.nodes.lost.filter(helper.hasLocation)
177			.map(mkMarker(nodeDict, function (d) {
178			if (d.lastseen.isAfter(moment(data.now).subtract(config.maxAgeAlert, 'days'))) {
179			return iconAlert;
180			}
181
182			if (d.lastseen.isAfter(moment(data.now).subtract(config.maxAge, 'days'))) {
183			return iconLost;
184			}
185			return null;
186			}, router));
187
188			groupOffline = L.featureGroup(markersOffline).addTo(map);
189			groupLost = L.featureGroup(markersLost).addTo(map);
190			groupOnline = L.featureGroup(markersOnline).addTo(map);
191			groupNew = L.featureGroup(markersNew).addTo(map);
192
193			this.data = {
194			online: nodesOnline.filter(helper.hasLocation),
195			offline: nodesOffline.filter(helper.hasLocation),
196			new: data.nodes.new.filter(helper.hasLocation),
197			lost: data.nodes.lost.filter(helper.hasLocation)
198			};
199			this.updateLayer();
200			},
201			updateLayer: function () {
202			if (this._map) {
203			this.prepareLabels();
204			}
205			},
206			prepareLabels: function () {
207			var d = this.data;
208
209			// label:
210			// - position (WGS84 coords)
211			// - offset (2D vector in pixels)
212			// - anchor (tuple, textAlignment, textBaseline)
213			// - minZoom (inclusive)
214			// - label (string)
215			// - color (string)
216
217			var labelsOnline = d.online.map(prepareLabel(null, 11, 8, true));
218			var labelsOffline = d.offline.map(prepareLabel('rgba(212, 62, 42, 0.9)', 9, 5, false));
219			var labelsNew = d.new.map(prepareLabel('rgba(48, 99, 20, 0.9)', 11, 8, true));
220			var labelsLost = d.lost.map(prepareLabel('rgba(212, 62, 42, 0.9)', 11, 8, true));
221
222			var labels = []
223			.concat(labelsNew)
224			.concat(labelsLost)
225			.concat(labelsOnline)
226			.concat(labelsOffline);
227
228			var minZoom = this.options.minZoom;
229			var maxZoom = this.options.maxZoom;
230
231			var trees = [];
232
233			var map = this._map;
234
235			function nodeToRect(z) {
236			return function (n) {
237			var p = map.project(n.position, z);
238			return { minX: p.x - nodeRadius, minY: p.y - nodeRadius, maxX: p.x + nodeRadius, maxY: p.y + nodeRadius };
239			};
240			}
241
242			for (var z = minZoom; z <= maxZoom; z++) {
243			trees[z] = rbush(9);
244			trees[z].load(labels.map(nodeToRect(z)));
245			}
246
247			labels = labels.map(function (n) {
248			var best = labelLocations.map(function (loc) {
249			var offset = calcOffset(n.offset, loc);
250			var i;
251
252			for (i = maxZoom; i >= minZoom; i--) {
253			var p = map.project(n.position, i);
254			var rect = labelRect(p, offset, loc, n, minZoom, maxZoom, i);
255			var candidates = trees[i].search(rect);
256
257			if (candidates.length > 0) {
258			break;
259			}
260			}
261
262			return { loc: loc, z: i + 1 };
263			}).filter(function (k) {
264			return k.z <= maxZoom;
265			}).sort(function (a, b) {
266			return a.z - b.z;
267			})[0];
268
269			if (best !== undefined) {
270			n.offset = calcOffset(n.offset, best.loc);
271			n.minZoom = best.z;
272			n.anchor = best.loc;
273
274			for (var i = maxZoom; i >= best.z; i--) {
275			var p = map.project(n.position, i);
276			var rect = labelRect(p, n.offset, best.loc, n, minZoom, maxZoom, i);
277			trees[i].insert(rect);
278			}
279
280			return n;
281			}
282			return undefined;
283			}).filter(function (n) {
284			return n !== undefined;
285			});
286
287			this.margin = 16;
288
289			if (labels.length > 0) {
290			this.margin += labels.map(function (n) {
291			return n.width;
292			}).sort().reverse()[0];
293			}
294
295			this.labels = rbush(9);
296			this.labels.load(labels.map(mapRTree));
297
298			this.redraw();
299			},
300			createTile: function (tilePoint) {
301			var tile = L.DomUtil.create('canvas', 'leaflet-tile');
302
303			var tileSize = this.options.tileSize;
304			tile.width = tileSize;
305			tile.height = tileSize;
306
307			if (!this.labels) {
308			return tile;
309			}
310
311			var s = tilePoint.multiplyBy(tileSize);
312			var map = this._map;
313			bodyStyle = window.getComputedStyle(document.querySelector('body'));
314			labelShadow = bodyStyle.backgroundColor.replace(/rgb/i, 'rgba').replace(/\)/i, ',0.7)');
315
316			function projectNodes(d) {
317			var p = map.project(d.label.position);
318
319			p.x -= s.x;
320			p.y -= s.y;
321
322			return { p: p, label: d.label };
323			}
324
325			var bbox = helper.getTileBBox(s, map, tileSize, this.margin);
326			var labels = this.labels.search(bbox).map(projectNodes);
327			var ctx = tile.getContext('2d');
328
329			ctx.lineWidth = 5;
330			ctx.strokeStyle = labelShadow;
331			ctx.miterLimit = 2;
332
333			function drawLabel(d) {
334			ctx.font = d.label.font;
335			ctx.textAlign = d.label.anchor[0];
336			ctx.textBaseline = d.label.anchor[1];
337			ctx.fillStyle = d.label.fillStyle === null ? bodyStyle.color : d.label.fillStyle;
338
339			if (d.label.stroke) {
340			ctx.strokeText(d.label.label, d.p.x + d.label.offset[0], d.p.y + d.label.offset[1]);
341			}
342
343			ctx.fillText(d.label.label, d.p.x + d.label.offset[0], d.p.y + d.label.offset[1]);
344			}
345
346			labels.filter(function (d) {
347			return tilePoint.z >= d.label.minZoom;
348			}).forEach(drawLabel);
349
350			return tile;
351			}
352			});
353			});
354

ffrgb / meshviewer

Pull Request — develop (#128)

labellayer.js ➔ define B

Complexity

Size

Duplication

Importance

How to fix Long Method

Long Method

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