map: draw only labels present on map using rtrees
This commit is contained in:
parent
9d2318dce1
commit
22b49c1a55
5 changed files with 100 additions and 67 deletions
lib/map
|
@ -6,6 +6,13 @@ define(["leaflet"],
|
|||
this.redraw()
|
||||
},
|
||||
drawTile: function (canvas, tilePoint) {
|
||||
function getTileBBox(s, map, tileSize, margin) {
|
||||
var tl = map.unproject([s.x - margin, s.y - margin])
|
||||
var br = map.unproject([s.x + margin + tileSize, s.y + margin + tileSize])
|
||||
|
||||
return [br.lat, tl.lng, tl.lat, br.lng]
|
||||
}
|
||||
|
||||
if (!this.data)
|
||||
return
|
||||
|
||||
|
@ -13,41 +20,34 @@ define(["leaflet"],
|
|||
var s = tilePoint.multiplyBy(tileSize)
|
||||
var map = this._map
|
||||
|
||||
function project(coords) {
|
||||
var p = map.project(new L.LatLng(coords[0], coords[1]))
|
||||
return {x: p.x - s.x, y: p.y - s.y}
|
||||
}
|
||||
|
||||
function projectNodes(d) {
|
||||
return { p: project([d.nodeinfo.location.latitude, d.nodeinfo.location.longitude]),
|
||||
o: d
|
||||
}
|
||||
var p = map.project([d.node.nodeinfo.location.latitude, d.node.nodeinfo.location.longitude])
|
||||
|
||||
p.x -= s.x
|
||||
p.y -= s.y
|
||||
|
||||
return {p: p, o: d.node}
|
||||
}
|
||||
|
||||
var margin = 150
|
||||
function onTile(d) {
|
||||
return d.p.x + margin > 0 ||
|
||||
d.p.y + margin > 0 ||
|
||||
d.p.x - tileSize - margin < 0 ||
|
||||
d.p.y - tileSize - margin < 0
|
||||
}
|
||||
var margin = 256
|
||||
var bbox = getTileBBox(s, map, tileSize, margin)
|
||||
|
||||
var nodesOnline = this.data.online.search(bbox).map(projectNodes)
|
||||
var nodesOffline = this.data.offline.search(bbox).map(projectNodes)
|
||||
var nodesNew = this.data.new.search(bbox).map(projectNodes)
|
||||
var nodesLost = this.data.lost.search(bbox).map(projectNodes)
|
||||
|
||||
var ctx = canvas.getContext("2d")
|
||||
|
||||
var nodesOnline = this.data.online.map(projectNodes).filter(onTile)
|
||||
var nodesOffline = this.data.offline.map(projectNodes).filter(onTile)
|
||||
var nodesNew = this.data.new.map(projectNodes).filter(onTile)
|
||||
var nodesLost = this.data.lost.map(projectNodes).filter(onTile)
|
||||
|
||||
var distance = 10
|
||||
ctx.font = "12px Roboto"
|
||||
ctx.textBaseline = "middle"
|
||||
ctx.textAlign = "left"
|
||||
ctx.lineWidth = 2.5
|
||||
|
||||
var distance = 10
|
||||
function drawLabel(d) {
|
||||
ctx.strokeText(d.o.nodeinfo.hostname, d.p.x + distance, d.p.y)
|
||||
ctx.fillText(d.o.nodeinfo.hostname, d.p.x + distance, d.p.y)
|
||||
ctx.strokeText(d.o.nodeinfo.hostname, d.p.x + distance, d.p.y)
|
||||
ctx.fillText(d.o.nodeinfo.hostname, d.p.x + distance, d.p.y)
|
||||
}
|
||||
|
||||
ctx.fillStyle = "rgba(212, 62, 42, 0.6)"
|
||||
|
|
Loading…
Add table
Add a link
Reference in a new issue