forcegraph: add labels

This commit is contained in:
Nils Schneider 2015-04-10 13:50:39 +02:00
parent cd9268419b
commit 020ab2aef5
2 changed files with 149 additions and 66 deletions

View file

@ -1,7 +1,7 @@
define(["d3"], function (d3) {
return function (config, linkScale, sidebar, router) {
var self = this
var svg, vis, link, node
var svg, vis, link, node, label
var nodesDict, linksDict
var zoomBehavior
var force
@ -14,7 +14,7 @@ define(["d3"], function (d3) {
var LINK_DISTANCE = 70
function graphDiameter(nodes) {
return Math.sqrt(nodes.length / Math.PI) * LINK_DISTANCE
return Math.sqrt(nodes.length / Math.PI) * LINK_DISTANCE * 1.41
}
function savePositions() {
@ -51,6 +51,11 @@ define(["d3"], function (d3) {
d.fixed &= 1
}
var draggableNode = d3.behavior.drag()
.on("dragstart", dragstart)
.on("drag", dragmove)
.on("dragend", dragend)
function animatePanzoom(translate, scale) {
zoomBehavior.scale(scale)
zoomBehavior.translate(translate)
@ -141,6 +146,112 @@ define(["d3"], function (d3) {
panzoomTo([0, 0], force.size())
}
function updateLinks(vis, data) {
var link = vis.selectAll("g.link")
.data(data, function (d) { return d.o.id })
link.exit().remove()
var linkEnter = link.enter().append("g")
.attr("class", "link")
.on("click", function (d) {
if (!d3.event.defaultPrevented)
router.link(d.o)()
})
linkEnter.append("line")
.append("title")
link.selectAll("line")
.style("stroke", function (d) { return linkScale(d.o.tq).hex() })
link.selectAll("title").text(function (d) { return showTq(d.o) })
return link
}
function updateNodes(vis, data) {
var node = vis.selectAll(".node")
.data(data, function(d) { return d.o.id })
node.exit().remove()
node.enter().append("circle")
.attr("r", 8)
.on("click", function (d) {
if (!d3.event.defaultPrevented)
router.node(d.o.node)()
})
.call(draggableNode)
node.attr("class", function (d) {
var s = ["node"]
if (!d.o.node)
s.push("unknown")
return s.join(" ")
})
return node
}
function updateLabels(vis, data) {
var label = vis.selectAll("text")
.data(data, function(d) { return d.o.id })
label.exit().remove()
var labelEnter = label.enter().append("text")
label.text(nodeName)
.each(function (d) {
var bbox = this.getBBox()
d.labelHeight = bbox.height
d.labelWidth = bbox.width
})
labelEnter.each(function (d) {
d.labelAngle = Math.PI / 2
})
return label
}
function positionLabels() {
label.attr("transform", function(d) {
var neighbours = d.neighbours.map(function (n) {
var dx = n.x - d.x
var dy = n.y - d.y
return (2 * Math.PI + Math.atan2(dy, dx)) % (2 * Math.PI)
})
var sumCos = neighbours.reduce(function (a, b) {
return a + Math.cos(b)
}, 0)
var sumSin = neighbours.reduce(function (a, b) {
return a + Math.sin(b)
}, 0)
if (neighbours.length > 0)
d.labelAngle = Math.PI + Math.atan2(sumSin, sumCos)
var offset = 10
var a = offset + d.labelWidth / 2
var b = offset + d.labelHeight / 2
var cos = Math.cos(d.labelAngle)
var sin = Math.sin(d.labelAngle)
var x = d.x + a * Math.pow(Math.abs(cos), 2 / 5) * Math.sign(cos)
var y = d.y + b * Math.pow(Math.abs(sin), 2 / 5) * Math.sign(sin)
return "translate(" + x + "," + y + ")"
})
}
function tickEvent() {
link.selectAll("line")
.attr("x1", function(d) { return d.source.x })
@ -148,9 +259,9 @@ define(["d3"], function (d3) {
.attr("x2", function(d) { return d.target.x })
.attr("y2", function(d) { return d.target.y })
node
.attr("cx", function(d) { return d.x })
node.attr("cx", function (d) { return d.x })
.attr("cy", function (d) { return d.y })
positionLabels()
}
el = document.createElement("div")
@ -168,26 +279,23 @@ define(["d3"], function (d3) {
vis = svg.append("g")
vis.append("g").attr("class", "links")
vis.append("g").attr("class", "nodes")
var visLinks = vis.append("g").attr("class", "links")
var visLabels = vis.append("g").attr("class", "labels")
var visNodes = vis.append("g").attr("class", "nodes")
force = d3.layout.force()
.charge(-70)
.gravity(0.05)
.charge(-80)
.gravity(0.01)
.chargeDistance(8 * LINK_DISTANCE)
.linkDistance(LINK_DISTANCE)
.linkStrength(function (d) {
return 1 / d.o.tq
return Math.max(0.5, 1 / d.o.tq)
})
.on("tick", tickEvent)
.on("end", savePositions)
panzoom()
var draggableNode = d3.behavior.drag()
.on("dragstart", dragstart)
.on("drag", dragmove)
.on("dragend", dragend)
self.setData = function (data) {
var oldNodes = {}
@ -235,26 +343,24 @@ define(["d3"], function (d3) {
return e
})
link = vis.select("g.links")
.selectAll("g.link")
.data(intLinks, function (d) { return d.o.id })
link.exit().remove()
var linkEnter = link.enter().append("g")
.attr("class", "link")
.on("click", function (d) {
if (!d3.event.defaultPrevented)
router.link(d.o)()
intNodes.forEach(function (d) {
d.neighbours = {}
})
linkEnter.append("line")
.append("title")
intLinks.forEach(function (d) {
d.source.neighbours[d.target.o.id] = d.target
d.target.neighbours[d.source.o.id] = d.source
})
link.selectAll("line")
.style("stroke", function (d) { return linkScale(d.o.tq).hex() })
intNodes.forEach(function (d) {
d.neighbours = Object.keys(d.neighbours).map(function (k) {
return d.neighbours[k]
})
})
link.selectAll("title").text(function (d) { return showTq(d.o) })
link = updateLinks(visLinks, intLinks)
node = updateNodes(visNodes, intNodes)
label = updateLabels(visLabels, intNodes)
linksDict = {}
@ -263,28 +369,6 @@ define(["d3"], function (d3) {
linksDict[d.o.id] = d
})
node = vis.select("g.nodes")
.selectAll(".node")
.data(intNodes, function(d) { return d.o.id })
node.exit().remove()
var nodeEnter = node.enter().append("circle")
.attr("r", 8)
.on("click", function (d) {
if (!d3.event.defaultPrevented)
router.node(d.o.node)()
})
.call(draggableNode)
node.attr("class", function (d) {
var s = ["node"]
if (!d.o.node)
s.push("unknown")
return s.join(" ")
})
nodesDict = {}
node.each( function (d) {
@ -292,8 +376,6 @@ define(["d3"], function (d3) {
nodesDict[d.o.node.nodeinfo.node_id] = d
})
nodeEnter.append("title")
if (localStorageTest()) {
var save = JSON.parse(localStorage.getItem("graph/nodeposition"))
@ -303,8 +385,8 @@ define(["d3"], function (d3) {
nodePositions[d.id] = d
})
nodeEnter.each( function (d) {
if (nodePositions[d.o.id]) {
node.each( function (d) {
if (nodePositions[d.o.id] && (d.x === undefined || d.y === undefined)) {
d.x = nodePositions[d.o.id].x
d.y = nodePositions[d.o.id].y
}
@ -312,8 +394,6 @@ define(["d3"], function (d3) {
}
}
node.selectAll("title").text(nodeName)
var diameter = graphDiameter(intNodes)
force.nodes(intNodes)

View file

@ -45,13 +45,16 @@
}
}
.label {
.labels {
text {
font-size: 0.8em;
}
rect {
fill: rgba(255, 255, 255, 0.8);
font-size: 7pt;
font-family: Roboto;
alignment-baseline: central;
text-anchor: middle;
fill: rgba(0, 0, 0, 0.6);
paint-order: stroke;
stroke-width: 3pt;
stroke: rgba(255, 255, 255, 0.5);
}
}
}