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🔎 ordering labels by scalerank before trying to place them

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This commit is contained in:
Michael Straßburger 2016-11-13 05:35:08 +01:00
parent ef6ab82376
commit 8e0b976ae0
2 changed files with 17 additions and 6 deletions
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21
src/Renderer.coffee
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@ -126,6 +126,7 @@ module.exports = class Renderer
_renderTiles: (tiles) -> _renderTiles: (tiles) ->
drawn = {} drawn = {}
labels = []
for layerId in @_generateDrawOrder tiles[0].xyz.z for layerId in @_generateDrawOrder tiles[0].xyz.z
for tile in tiles for tile in tiles
@ -133,8 +134,19 @@ module.exports = class Renderer
for feature in layer.features for feature in layer.features
# continue if feature.id and drawn[feature.id] # continue if feature.id and drawn[feature.id]
# drawn[feature.id] = true # drawn[feature.id] = true
if layerId.match /label/
labels.push tile: tile, feature: feature, scale: layer.scale
else
@_drawFeature tile, feature, layer.scale
@_drawFeature tile, feature, layer.scale labels.sort (a, b) ->
if a.feature.properties.localrank
a.feature.properties.localrank-b.feature.properties.localrank
else
a.feature.properties.scalerank-b.feature.properties.scalerank
for label in labels
@_drawFeature label.tile, label.feature, label.scale
_getFrame: -> _getFrame: ->
frame = "" frame = ""
@ -155,6 +167,7 @@ module.exports = class Renderer
switch feature.style.type switch feature.style.type
when "line" when "line"
width = feature.style.paint['line-width'] width = feature.style.paint['line-width']
# TODO: apply the correct zoom based value
width = width.stops[0][1] if width instanceof Object width = width.stops[0][1] if width instanceof Object
points = @_scaleAndReduce tile, feature, feature.points, scale points = @_scaleAndReduce tile, feature, feature.points, scale
@ -163,9 +176,6 @@ module.exports = class Renderer
when "fill" when "fill"
points = (@_scaleAndReduce tile, feature, p, scale, false for p in feature.points) points = (@_scaleAndReduce tile, feature, p, scale, false for p in feature.points)
@canvas.polygon points, feature.color @canvas.polygon points, feature.color
# if points.length is 3
# @canvas._filledTriangle points[0], points[1], points[2], feature.color
true
when "symbol" when "symbol"
text = feature.properties["name_"+config.language] or text = feature.properties["name_"+config.language] or
@ -228,7 +238,8 @@ module.exports = class Renderer
if scaled.length < 2 if scaled.length < 2
return [] return []
simplify scaled, .5 #simplify scaled, .5, true
scaled
else else
scaled scaled

2
src/config.coffee
View File

@ -5,7 +5,7 @@ module.exports =
#source: __dirname+"/../mbtiles/regensburg.mbtiles" #source: __dirname+"/../mbtiles/regensburg.mbtiles"
styleFile: __dirname+"/../styles/dark.json" styleFile: __dirname+"/../styles/dark.json"
initialZoom: false initialZoom: null
maxZoom: 18 maxZoom: 18
zoomStep: 0.2 zoomStep: 0.2