Freifunk-Leipzig
/
meshviewer
Archived
13
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

forcegraph: unknownNodes, optimize clearing

This commit is contained in:
Nils Schneider 2015-04-10 21:53:40 +02:00
parent cc88109271
commit 09e760f4d0
1 changed files with 57 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

67
lib/forcegraph.js
View File

@ -1,7 +1,9 @@
define(["d3"], function (d3) {
return function (config, linkScale, sidebar, router) {
var margin = 200
return function (config, linkScale, sidebar, router) {
var self = this
var svg, canvas, ctx
var svg, canvas, ctx, screenRect
var svgNodes, svgLinks
var nodesDict, linksDict
var zoomBehavior
@ -13,6 +15,8 @@ define(["d3"], function (d3) {
var highlight
var highlightedNodes = []
var highlightedLinks = []
var nodes = []
var unknownNodes = []
var LINK_DISTANCE = 70
@ -90,14 +94,24 @@ define(["d3"], function (d3) {
}
}
var translateP, scaleP
function panzoom() {
var translate = zoomBehavior.translate()
var scale = zoomBehavior.scale()
panzoomReal(translate, scale)
translateP = translate
scaleP = scale
}
function panzoomReal(translate, scale) {
screenRect = {left: -translate[0] / scale, top: -translate[1] / scale,
right: (canvas.width - translate[0]) / scale,
bottom: (canvas.height - translate[1]) / scale}
svg.attr("transform", "translate(" + translate + ") " +
"scale(" + scale + ")")
@ -222,18 +236,47 @@ define(["d3"], function (d3) {
ctx.fillText(d.label, x, y)
}
function visibleLinks(d) {
return (d.source.x > screenRect.left && d.source.x < screenRect.right &&
d.source.y > screenRect.top && d.source.y < screenRect.bottom) ||
(d.target.x > screenRect.left && d.target.x < screenRect.right &&
d.target.y > screenRect.top && d.target.y < screenRect.bottom)
}
function visibleNodes(d) {
return d.x + margin > screenRect.left && d.x - margin < screenRect.right &&
d.y + margin > screenRect.top && d.y - margin < screenRect.bottom
}
function redraw() {
var translate = zoomBehavior.translate()
var scale = zoomBehavior.scale()
var nodes = intNodes.filter(function (d) { return d.o.node })
var unknownNodes = intNodes.filter(function (d) { return !d.o.node })
var links = intLinks
ctx.save()
var links = intLinks.filter(visibleLinks)
var xExtent = d3.extent(intNodes, function (d) { return d.px })
var yExtent = d3.extent(intNodes, function (d) { return d.py })
ctx.font = "11px Roboto"
ctx.clearRect(0, 0, canvas.width, canvas.height)
if (translateP) {
ctx.save()
ctx.translate(translateP[0], translateP[1])
ctx.scale(scaleP, scaleP)
ctx.clearRect(xExtent[0] - margin, yExtent[0] - margin,
xExtent[1] - xExtent[0] + 2 * margin,
yExtent[1] - yExtent[0] + 2 * margin)
ctx.restore()
}
ctx.save()
ctx.translate(translate[0], translate[1])
ctx.scale(scale, scale)
if (!translateP)
ctx.clearRect(xExtent[0] - margin, yExtent[0] - margin,
xExtent[1] - xExtent[0] + 2 * margin,
yExtent[1] - yExtent[0] + 2 * margin)
if (highlightedLinks.length) {
ctx.save()
ctx.lineWidth = 16
@ -263,10 +306,11 @@ define(["d3"], function (d3) {
ctx.textBaseline = "middle"
ctx.fillStyle = "rgba(0, 0, 0, 0.6)"
intNodes.forEach(drawLabel)
intNodes.filter(visibleNodes).forEach(drawLabel)
ctx.beginPath()
unknownNodes.forEach(function (d) {
unknownNodes.filter(visibleNodes).forEach(function (d) {
ctx.moveTo(d.x + 8, d.y)
ctx.arc(d.x, d.y, 8, 0, 2 * Math.PI)
})
@ -278,7 +322,7 @@ define(["d3"], function (d3) {
ctx.stroke()
ctx.beginPath()
nodes.forEach(function (d) {
nodes.filter(visibleNodes).forEach(function (d) {
ctx.moveTo(d.x + 8, d.y)
ctx.arc(d.x, d.y, 8, 0, 2 * Math.PI)
})
@ -447,6 +491,9 @@ define(["d3"], function (d3) {
svgLinks = updateLinks(visLinks, intLinks)
svgNodes = updateNodes(visNodes, intNodes)
nodes = intNodes.filter(function (d) { return d.o.node })
unknownNodes = intNodes.filter(function (d) { return !d.o.node })
if (localStorageTest()) {
var save = JSON.parse(localStorage.getItem("graph/nodeposition"))