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🔍 endless magnification zoomability after max tile zoom level is reached

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This commit is contained in:
Michael Straßburger 2016-11-03 07:04:53 +01:00
parent ea879a77f7
commit 24434052cb
4 changed files with 8 additions and 7 deletions
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4
README.md
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@ -69,7 +69,7 @@ No web browser around? No worries - discover the planet in your console!
* [ ] Viewport * [ ] Viewport
* [x] start with zoom level which shows full vector tile * [x] start with zoom level which shows full vector tile
* [X] boundary based on current zoom & size * [X] boundary based on current zoom & size
* [ ] determain tiles to show * [X] determain tiles to show
* [X] zoom while keeping center * [X] zoom while keeping center
* [ ] calculate tile areas * [ ] calculate tile areas
* [X] center based on mercator * [X] center based on mercator
@ -94,7 +94,7 @@ No web browser around? No worries - discover the planet in your console!
* [ ] line drawing * [ ] line drawing
* [x] support for stroke width * [x] support for stroke width
* [ ] support for dashed/dotted lines? * [ ] support for dashed/dotted lines?
* [x] feature selection for priority rerendering (roads -> warter -> roads:bridges) * [ ] feature selection for priority rerendering (roads -> warter -> roads:bridges)
* [ ] label drawing * [ ] label drawing
* [x] support for point labels * [x] support for point labels

1
package.json
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@ -36,6 +36,7 @@
"request-promise": "^4.1.1", "request-promise": "^4.1.1",
"sphericalmercator": "^1.0.5", "sphericalmercator": "^1.0.5",
"term-mouse": "^0.1.1", "term-mouse": "^0.1.1",
"tilebelt": "^1.0.1",
"vector-tile": "^1.3.0", "vector-tile": "^1.3.0",
"x256": "0.0.2" "x256": "0.0.2"
} }

7
src/Renderer.coffee
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@ -19,7 +19,6 @@ utils = require './utils'
module.exports = class Renderer module.exports = class Renderer
cache: {} cache: {}
config: config:
baseZoom: 4
fillPolygons: true fillPolygons: true
language: 'de' language: 'de'
@ -27,6 +26,7 @@ module.exports = class Renderer
tileSize: 4096 tileSize: 4096
projectSize: 256 projectSize: 256
maxZoom: 14
#"poi_label", "water", #"poi_label", "water",
drawOrder: [ drawOrder: [
@ -115,7 +115,7 @@ module.exports = class Renderer
@lastDrawAt = Date.now() @lastDrawAt = Date.now()
_visibleTiles: (center, zoom) -> _visibleTiles: (center, zoom) ->
z = Math.max 0, Math.floor zoom z = Math.min @config.maxZoom, Math.max 0, Math.floor zoom
xyz = tilebelt.pointToTileFraction center.lon, center.lat, z xyz = tilebelt.pointToTileFraction center.lon, center.lat, z
tiles = [] tiles = []
@ -222,7 +222,7 @@ module.exports = class Renderer
@output.write output @output.write output
_scaleAtZoom: (zoom) -> _scaleAtZoom: (zoom) ->
baseZoom = Math.floor Math.max 0, zoom baseZoom = Math.min @config.maxZoom, Math.floor Math.max 0, zoom
(@config.tileSize/@config.projectSize)/Math.pow(2, zoom-baseZoom) (@config.tileSize/@config.projectSize)/Math.pow(2, zoom-baseZoom)
_drawFeature: (layer, data, scale, zoom) -> _drawFeature: (layer, data, scale, zoom) ->
@ -256,6 +256,7 @@ module.exports = class Renderer
when "Point" when "Point"
text = feature.properties["name_"+@config.language] or text = feature.properties["name_"+@config.language] or
feature.properties["name_en"] or
feature.properties["name"] or feature.properties["name"] or
feature.properties.house_num or feature.properties.house_num or
#@config.icons[feature.properties.maki] or #@config.icons[feature.properties.maki] or

3
src/Termap.coffee
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@ -46,9 +46,8 @@ module.exports = class Termap
lat: 49.0189 lat: 49.0189
lon: 12.0990 lon: 12.0990
minZoom: null minZoom: null
maxZoom: 14.9 maxZoom: 18
constructor: (options) -> constructor: (options) ->
@config[key] = val for key, val of options @config[key] = val for key, val of options