mirror of
https://github.com/rastapasta/mapscii.git
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🔨 refactoring and becoming more classy
This commit is contained in:
Michael Straßburger
parent
1effed33d9
commit
1acde4d1d3
242
src/Renderer.coffee
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242
src/Renderer.coffee
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@ -0,0 +1,242 @@
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###
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termap - Terminal Map Viewer
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by Michael Strassburger <codepoet@cpan.org>
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The Console Vector Tile renderer - bäm!
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###
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x256 = require 'x256'
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Protobuf = require 'pbf'
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VectorTile = require('vector-tile').VectorTile
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zlib = require 'zlib'
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triangulator = new (require('pnltri')).Triangulator()
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Canvas = require './Canvas'
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LabelBuffer = require './LabelBuffer'
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Styler = require './Styler'
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utils = require './utils'
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module.exports = class Renderer
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config:
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fillPolygons: true
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language: 'de'
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drawOrder: ["admin", "water", "building", "road", "poi_label", "place_label", "housenum_label"]
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icons:
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car: "🚗"
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school: "S" #{}"🏫"
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marker: "⭐"
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'art-gallery': "A" #"🎨"
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attraction: "❕"
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stadium: "🏈"
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toilet: "🚽"
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cafe: "☕"
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laundry: "👚"
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bus: "🚌"
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restaurant: "R" #🍛"
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lodging: "B" #🛏"
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'fire-station': "🚒"
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shop: "🛍"
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pharmacy: "💊"
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beer: "H" #"🍺"
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cinema: "C" #"🎦"
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layers:
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housenum_label:
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minZoom: 1.5
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color: 8
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building:
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minZoom: 3.8
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color: 8
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place_label:
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color: "yellow"
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poi_label:
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minZoom: 3
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color: "yellow"
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road:
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color: 15
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landuse:
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color: "green"
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water:
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color: "blue"
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admin:
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color: "red"
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isDrawing: false
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lastDrawAt: 0
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labelBuffer: null
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constructor: ->
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@labelBuffer = new LabelBuffer()
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loadStyleFile: (file) ->
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@styler = new Styler file
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setSize: (@width, @height) ->
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@canvas = new Canvas @width, @height
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_parseTile: (buffer) ->
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# extract, decode and parse a given tile buffer
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new VectorTile new Protobuf zlib.gunzipSync buffer
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_getFeatures: (tile) ->
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features = {}
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for name,layer of tile.layers
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continue unless @config.layers[name]
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features[name] = for i in [0...layer.length]
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feature = layer.feature i
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type = [undefined, "Point", "LineString", "Polygon"][feature.type]
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properties = feature.properties
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properties.$type = type
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id: feature.id
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type: type
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properties: properties
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points: feature.loadGeometry()
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features
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draw: (@view, @zoom) ->
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return if @isDrawing
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@isDrawing = true
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@lastDrawAt = Date.now()
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@labelBuffer.clear()
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# TODO: better way for background color instead of setting filling FG?
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# if color = @styler.styleById['background']?.paint['background-color']
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# @canvas.strokeStyle = x256 utils.hex2rgb(color)...
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# @canvas.fillRect 0, 0, @width, @height
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# else
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@canvas.clearRect 0, 0, @width, @height
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@canvas.save()
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@canvas.translate @view[0], @view[1]
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@_drawLayers()
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@canvas.restore()
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@write @canvas._canvas.frame()
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@isDrawing = false
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write: (output) ->
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process.stdout.write output
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_drawLayers: ->
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drawn = []
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for layer in @config.drawOrder
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scale = Math.pow 2, @zoom
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continue unless @features?[layer]
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if @config.layers[layer].minZoom and @zoom > @config.layers[layer].minZoom
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continue
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@canvas.strokeStyle = @canvas.fillStyle = @config.layers[layer].color
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for feature in @features[layer]
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if @_drawFeature layer, feature, scale
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drawn.push feature
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drawn
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_drawFeature: (layer, feature, scale) ->
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# TODO: this is ugly :) need to be fixed @style
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return false if feature.properties.class is "ferry"
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feature.type = "LineString" if layer is "building" or layer is "road"
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toDraw = []
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for idx, points of feature.points
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visible = false
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projectedPoints = for point in points
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projectedPoint =
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x: point.x/scale
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y: point.y/scale
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visible = true if not visible and @_isOnScreen projectedPoint
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projectedPoint
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if idx is 0 and not visible
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return false
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continue unless visible
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toDraw.push projectedPoints
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if style = @styler.getStyleFor layer, feature, 14
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color = style.paint['line-color'] or style.paint['fill-color']
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# TODO: zoom calculation todo for perfect styling
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if color instanceof Object
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color = color.stops[0][1]
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@canvas.fillStyle = @canvas.strokeStyle = x256 utils.hex2rgb color
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else
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@canvas.strokeStyle = @canvas.fillStyle = @config.layers[layer].color
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switch feature.type
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when "LineString"
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@_drawWithLines points for points in toDraw
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true
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when "Polygon"
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unless @config.fillPolygons and @_drawWithTriangles toDraw
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@_drawWithLines points for points in toDraw
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true
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when "Point"
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text = feature.properties["name_"+@config.language] or
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feature.properties["name"] or
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feature.properties.house_num or
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#@config.icons[feature.properties.maki] or
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"◉"
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wasDrawn = false
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# TODO: check in definition if points can actually own multiple geometries
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for points in toDraw
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for point in points
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x = point.x - text.length
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#continue if x-@view[0] < 0
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if @labelBuffer.writeIfPossible text, x, point.y
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@canvas.fillText text, x, point.y
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wasDrawn = true
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wasDrawn
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_drawWithTriangles: (points) ->
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try
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triangles = triangulator.triangulate_polygon points
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catch
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return false
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return false unless triangles.length
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# TODO: triangles are returned as vertex references to a flattened input.
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# optimize it!
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arr = points.reduce (a, b) -> a.concat b
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for triangle in triangles
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try
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@canvas.fillTriangle arr[triangle[0]], arr[triangle[1]], arr[triangle[2]]
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catch
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return false
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true
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_drawWithLines: (points) ->
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@canvas.beginPath()
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first = points.shift()
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@canvas.moveTo first.x, first.y
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@canvas.lineTo point.x, point.y for point in points
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@canvas.stroke()
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_isOnScreen: (point) ->
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point.x+@view[0]>=4 and
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point.x+@view[0]<@width-4 and
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point.y+@view[1]>=0 and
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point.y+@view[1]<@height
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145
src/Termap.coffee
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145
src/Termap.coffee
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@ -0,0 +1,145 @@
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###
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termap - Terminal Map Viewer
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by Michael Strassburger <codepoet@cpan.org>
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###
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keypress = require 'keypress'
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TermMouse = require 'term-mouse'
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mercator = new (require('sphericalmercator'))()
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Renderer = require './Renderer'
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utils = require './utils'
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module.exports = class Termap
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config:
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styleFile: __dirname+"/../styles/bright.json"
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zoomStep: 0.4
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width: null
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height: null
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canvas: null
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mouse: null
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mousePosition: [0, 0]
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mouseDragging: false
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center:
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lat: 49.019855
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lng: 12.096956
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zoom: 2
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view: [0, 0]
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scale: 4
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constructor: ->
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@_initControls()
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@_initRenderer()
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_initControls: ->
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keypress process.stdin
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process.stdin.setRawMode true
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process.stdin.resume()
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process.stdin.on 'keypress', (ch, key) => @_onKey key
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@mouse = TermMouse()
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@mouse.start()
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@mouse.on 'click', (event) => @_onClick event
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@mouse.on 'scroll', (event) => @_onMouseScroll event
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@mouse.on 'move', (event) => @_onMouseMove event
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_initRenderer: ->
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@renderer = new Renderer()
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@renderer.loadStyleFile @config.styleFile
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process.stdout.on 'resize', =>
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@_resizeRenderer()
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@_draw()
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@_resizeRenderer()
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@zoom = Math.log(4096/@width)/Math.LN2
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_resizeRenderer: (cb) ->
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@width = Math.floor((process.stdout.columns-1)/2)*2*2
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@height = Math.ceil(process.stdout.rows/4)*4*4
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@renderer.setSize @width, @height
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_onClick: (event) ->
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if @mouseDragging and event.button is "left"
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@view[0] -= (@mouseDragging.x-@mousePosition.x)*2
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@view[1] -= (@mouseDragging.y-@mousePosition.y)*4
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@_draw()
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@mouseDragging = false
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_onMouseScroll: (event) ->
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# TODO: handle .x/y for directed zoom
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@zoomBy @config.zoomStep * if event.button is "up" then 1 else -1
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@_draw()
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_onMouseMove: (event) ->
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# only continue if x/y are valid
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return unless event.x <= process.stdout.columns and event.y <= process.stdout.rows
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# start dragging
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if not @mouseDragging and event.button is "left"
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@mouseDragging = x: event.x, y: event.y
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# update internal mouse tracker
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@mousePosition = x: event.x, y: event.y
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_onKey: (key) ->
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# check if the pressed key is configured
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draw = switch key?.name
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when "q"
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process.exit 0
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when "z" then @zoomBy @config.zoomStep
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when "a" then @zoomBy -@config.zoomStep
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when "left" then @view[0] += 5
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when "right" then @view[0] -= 5
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when "up" then @view[1]+= 5
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when "down" then @view[1]-= 5
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else
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false
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if draw
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@_draw()
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# else
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# # display debug info for unhandled keys
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# @notify JSON.stringify key
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_draw: ->
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@renderer.draw @view, @zoom
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@renderer.write @_getFooter()
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_getBBox: ->
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[x, y] = mercator.forward [@center.lng, @center.lat]
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width = @width * Math.pow(2, @zoom)
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height = @height * Math.pow(2, @zoom)
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mercator.inverse([x - width/2, y + width/2]).concat mercator.inverse([x + width/2, y - width/2])
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_getFooter: ->
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"center: [#{utils.digits @center.lat, 2}, #{utils.digits @center.lng, 2}] zoom: #{utils.digits @zoom, 2}"
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# bbox: [#{@_getBBox().map((z) -> utils.digits(z, 2)).join(',')}]"
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notify: (text) ->
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return if @renderer.isDrawing
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@renderer.write "\r\x1B[K#{@_getFooter()} #{text}"
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zoomBy: (step) ->
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return unless @scale+step > 0
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before = @scale
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@scale += step
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@zoom += step
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@view[0] = @view[0]*before/@scale + if step > 0 then 8 else -8
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@view[1] = @view[1]*before/@scale + if step > 0 then 8 else -8
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@ -13,9 +13,6 @@ utils =
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angle / Math.PI * 180
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hex2rgb: (color) ->
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if not color?.match
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console.log color
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return [255, 0, 0] unless color?.match
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unless color.match /^#[a-fA-F0-9]{3,6}$/
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@ -87,10 +87,11 @@
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]
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},
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{
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"hide": true,
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"type": "line",
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"id": "waterway",
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"paint": {
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"line-color": "#a0c8f0"
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"line-color": "#303090"
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},
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"source-layer": "waterway",
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"filter": [
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@ -116,7 +117,7 @@
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"type": "line",
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"id": "waterway_river",
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"paint": {
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"line-color": "#a0c8f0"
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"line-color": "#303090"
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},
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"source-layer": "waterway",
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"filter": [
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@ -143,7 +144,7 @@
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"type": "fill",
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"id": "water",
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"paint": {
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"fill-color": "#a0c8f0"
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"fill-color": "#303090"
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},
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"source-layer": "water"
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},
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@ -1652,6 +1653,19 @@
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]
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}
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}
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},
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{
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"type": "line",
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"id": "ferry_road",
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"paint": {
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"line-color": "#303090"
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},
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"source-layer": "road",
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"filter": [
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"==",
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"class",
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"ferry"
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]
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}
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]
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}
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366
termap.coffee
366
termap.coffee
@ -1,371 +1,9 @@
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###
|
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termap - Terminal Map Viewer
|
||||
by Michael Strassburger <codepoet@cpan.org>
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||||
###
|
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|
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keypress = require 'keypress'
|
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TermMouse = require 'term-mouse'
|
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x256 = require 'x256'
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Protobuf = require 'pbf'
|
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VectorTile = require('vector-tile').VectorTile
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fs = require 'fs'
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zlib = require 'zlib'
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mercator = new (require('sphericalmercator'))()
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triangulator = new (require('pnltri')).Triangulator()
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Canvas = require __dirname+'/src/Canvas'
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LabelBuffer = require __dirname+'/src/LabelBuffer'
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Styler = require __dirname+'/src/Styler'
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utils = require __dirname+'/src/utils'
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class Termap
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config:
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language: 'de'
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styleFile: __dirname+"/styles/bright.json"
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fillPolygons: true
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zoomStep: 0.4
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drawOrder: ["admin", "water", "building", "road", "poi_label", "place_label", "housenum_label"]
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icons:
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car: "🚗"
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school: "S" #{}"🏫"
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marker: "⭐"
|
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'art-gallery': "A" #"🎨"
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attraction: "❕"
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stadium: "🏈"
|
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toilet: "🚽"
|
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cafe: "☕"
|
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laundry: "👚"
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bus: "🚌"
|
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restaurant: "R" #🍛"
|
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lodging: "B" #🛏"
|
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'fire-station': "🚒"
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shop: "🛍"
|
||||
pharmacy: "💊"
|
||||
beer: "H" #"🍺"
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cinema: "C" #"🎦"
|
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layers:
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housenum_label:
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minZoom: 2
|
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color: 8
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building:
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minZoom: 3.8
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color: 8
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place_label:
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color: "yellow"
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poi_label:
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minZoom: 3
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color: "yellow"
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road:
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color: 15
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landuse:
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color: "green"
|
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water:
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color: "blue"
|
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admin:
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color: "red"
|
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mouse: null
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width: null
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||||
height: null
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canvas: null
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styler: null
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isDrawing: false
|
||||
lastDrawAt: 0
|
||||
|
||||
mousePosition: [0, 0]
|
||||
mouseDragging: false
|
||||
|
||||
center:
|
||||
lat: 49.019855
|
||||
lng: 12.096956
|
||||
|
||||
zoom: 2
|
||||
view: [0, 0]
|
||||
|
||||
scale: 4
|
||||
|
||||
constructor: ->
|
||||
@_initControls()
|
||||
@_initCanvas()
|
||||
|
||||
@_onResize =>
|
||||
@_initCanvas()
|
||||
@_draw()
|
||||
|
||||
_initControls: ->
|
||||
keypress process.stdin
|
||||
process.stdin.setRawMode true
|
||||
process.stdin.resume()
|
||||
|
||||
process.stdin.on 'keypress', (ch, key) => @_onKey key
|
||||
|
||||
@mouse = TermMouse()
|
||||
@mouse.start()
|
||||
|
||||
@mouse.on 'click', (event) => @_onClick event
|
||||
@mouse.on 'scroll', (event) => @_onMouseScroll event
|
||||
@mouse.on 'move', (event) => @_onMouseMove event
|
||||
|
||||
_initCanvas: ->
|
||||
@width = Math.floor((process.stdout.columns-1)/2)*2*2
|
||||
@height = Math.ceil(process.stdout.rows/4)*4*4
|
||||
@canvas = new Canvas @width, @height
|
||||
|
||||
unless @lastDrawAt
|
||||
@zoom = Math.log(4096/@width)/Math.LN2
|
||||
|
||||
@labelBuffer = new LabelBuffer()
|
||||
@styler = new Styler @config.styleFile
|
||||
|
||||
_onResize: (cb) ->
|
||||
process.stdout.on 'resize', cb
|
||||
|
||||
_onClick: (event) ->
|
||||
if @mouseDragging and event.button is "left"
|
||||
@view[0] -= (@mouseDragging.x-@mousePosition.x)*2
|
||||
@view[1] -= (@mouseDragging.y-@mousePosition.y)*4
|
||||
@_draw()
|
||||
|
||||
@mouseDragging = false
|
||||
|
||||
_onMouseScroll: (event) ->
|
||||
# TODO: handle .x/y for directed zoom
|
||||
@zoomBy @config.zoomStep * if event.button is "up" then 1 else -1
|
||||
@_draw()
|
||||
|
||||
_onMouseMove: (event) ->
|
||||
# only continue if x/y are valid
|
||||
return unless event.x <= process.stdout.columns and event.y <= process.stdout.rows
|
||||
|
||||
# start dragging
|
||||
if not @mouseDragging and event.button is "left"
|
||||
@mouseDragging = x: event.x, y: event.y
|
||||
|
||||
# update internal mouse tracker
|
||||
@mousePosition = x: event.x, y: event.y
|
||||
|
||||
_onKey: (key) ->
|
||||
# check if the pressed key is configured
|
||||
draw = switch key?.name
|
||||
when "q"
|
||||
process.exit 0
|
||||
|
||||
when "z" then @zoomBy @config.zoomStep
|
||||
when "a" then @zoomBy -@config.zoomStep
|
||||
when "left" then @view[0] += 5
|
||||
when "right" then @view[0] -= 5
|
||||
when "up" then @view[1]+= 5
|
||||
when "down" then @view[1]-= 5
|
||||
|
||||
else
|
||||
false
|
||||
|
||||
if draw
|
||||
@_draw()
|
||||
# else
|
||||
# # display debug info for unhandled keys
|
||||
# @notify JSON.stringify key
|
||||
|
||||
_parseTile: (buffer) ->
|
||||
# extract, decode and parse a given tile buffer
|
||||
new VectorTile new Protobuf zlib.gunzipSync data
|
||||
|
||||
_getFeatures: (tile) ->
|
||||
features = {}
|
||||
for name,layer of tile.layers
|
||||
continue unless @config.layers[name]
|
||||
|
||||
features[name] = for i in [0...layer.length]
|
||||
feature = layer.feature i
|
||||
type = [undefined, "Point", "LineString", "Polygon"][feature.type]
|
||||
|
||||
properties = feature.properties
|
||||
properties.$type = type
|
||||
|
||||
id: feature.id
|
||||
type: type
|
||||
properties: properties
|
||||
points: feature.loadGeometry()
|
||||
|
||||
features
|
||||
|
||||
_draw: ->
|
||||
return if @isDrawing
|
||||
@isDrawing = true
|
||||
@lastDrawAt = Date.now()
|
||||
|
||||
# if color = @styler.styleById['background']?.paint['background-color']
|
||||
# @canvas.strokeStyle = x256 utils.hex2rgb(color)...
|
||||
# @canvas.fillRect 0, 0, @width, @height
|
||||
# else
|
||||
@canvas.clearRect 0, 0, @width, @height
|
||||
|
||||
@canvas.save()
|
||||
@canvas.translate @view[0], @view[1]
|
||||
|
||||
@labelBuffer.clear()
|
||||
|
||||
drawn = @_drawLayers()
|
||||
|
||||
@canvas.restore()
|
||||
|
||||
@_write @canvas._canvas.frame()
|
||||
@_write @_getFooter()
|
||||
|
||||
@isDrawing = false
|
||||
|
||||
_drawLayers: ->
|
||||
drawn = []
|
||||
for layer in @config.drawOrder
|
||||
scale = Math.pow 2, @zoom
|
||||
continue unless @features?[layer]
|
||||
|
||||
if @config.layers[layer].minZoom and @zoom > @config.layers[layer].minZoom
|
||||
continue
|
||||
|
||||
@canvas.strokeStyle = @canvas.fillStyle = @config.layers[layer].color
|
||||
|
||||
for feature in @features[layer]
|
||||
if @_drawFeature layer, feature, scale
|
||||
drawn.push feature
|
||||
|
||||
drawn
|
||||
|
||||
_drawFeature: (layer, feature, scale) ->
|
||||
# TODO: this is ugly :) need to be fixed @style
|
||||
return false if layer is 'road' and feature.type is "Polygon"
|
||||
feature.type = "LineString" if layer is "building"
|
||||
|
||||
toDraw = []
|
||||
for idx, points of feature.points
|
||||
visible = false
|
||||
|
||||
projectedPoints = for point in points
|
||||
projectedPoint =
|
||||
x: point.x/scale
|
||||
y: point.y/scale
|
||||
|
||||
visible = true if not visible and @_isOnScreen projectedPoint
|
||||
projectedPoint
|
||||
|
||||
if idx is 0 and not visible
|
||||
return false
|
||||
|
||||
continue unless visible
|
||||
toDraw.push projectedPoints
|
||||
|
||||
if style = @styler.getStyleFor layer, feature, 14
|
||||
color = style.paint['line-color'] or style.paint['fill-color']
|
||||
|
||||
# TODO: zoom calculation todo for perfect styling
|
||||
if color instanceof Object
|
||||
color = color.stops[0][1]
|
||||
|
||||
@canvas.fillStyle = @canvas.strokeStyle = x256 utils.hex2rgb color
|
||||
else
|
||||
@canvas.strokeStyle = @canvas.fillStyle = @config.layers[layer].color
|
||||
|
||||
switch feature.type
|
||||
when "LineString"
|
||||
@_drawWithLines points for points in toDraw
|
||||
true
|
||||
|
||||
when "Polygon"
|
||||
unless @config.fillPolygons and @_drawWithTriangles toDraw
|
||||
@_drawWithLines points for points in toDraw
|
||||
true
|
||||
|
||||
when "Point"
|
||||
text = feature.properties["name_"+@config.language] or
|
||||
feature.properties["name"] or
|
||||
feature.properties.house_num or
|
||||
@config.icons[feature.properties.maki] or
|
||||
"◉"
|
||||
|
||||
wasDrawn = false
|
||||
# TODO: check in definition if points can actually own multiple geometries
|
||||
for points in toDraw
|
||||
for point in points
|
||||
x = point.x - text.length
|
||||
if @labelBuffer.writeIfPossible text, x, point.y
|
||||
@canvas.fillText text, x, point.y
|
||||
wasDrawn = true
|
||||
|
||||
wasDrawn
|
||||
|
||||
_drawWithTriangles: (points) ->
|
||||
try
|
||||
triangles = triangulator.triangulate_polygon points
|
||||
catch
|
||||
return false
|
||||
|
||||
return false unless triangles.length
|
||||
|
||||
# TODO: triangles are returned as vertex references to a flattened input.
|
||||
# optimize it!
|
||||
|
||||
arr = points.reduce (a, b) -> a.concat b
|
||||
for triangle in triangles
|
||||
try
|
||||
@canvas.fillTriangle arr[triangle[0]], arr[triangle[1]], arr[triangle[2]]
|
||||
catch
|
||||
return false
|
||||
true
|
||||
|
||||
_drawWithLines: (points) ->
|
||||
@canvas.beginPath()
|
||||
first = points.shift()
|
||||
@canvas.moveTo first.x, first.y
|
||||
@canvas.lineTo point.x, point.y for point in points
|
||||
@canvas.stroke()
|
||||
|
||||
_isOnScreen: (point) ->
|
||||
point.x+@view[0]>=4 and
|
||||
point.x+@view[0]<@width-4 and
|
||||
point.y+@view[1]>=0 and
|
||||
point.y+@view[1]<@height
|
||||
|
||||
_write: (text) ->
|
||||
process.stdout.write text
|
||||
|
||||
_getBBox: ->
|
||||
[x, y] = mercator.forward [@center.lng, @center.lat]
|
||||
width = @width * Math.pow(2, @zoom)
|
||||
height = @height * Math.pow(2, @zoom)
|
||||
|
||||
mercator.inverse([x - width/2, y + width/2]).concat mercator.inverse([x + width/2, y - width/2])
|
||||
|
||||
_getFooter: ->
|
||||
"center: [#{utils.digits @center.lat, 2}, #{utils.digits @center.lng, 2}] zoom: #{utils.digits @zoom, 2}"
|
||||
# bbox: [#{@_getBBox().map((z) -> utils.digits(z, 2)).join(',')}]"
|
||||
|
||||
notify: (text) ->
|
||||
return if @isDrawing
|
||||
@_write "\r\x1B[K#{@_getFooter()} #{text}"
|
||||
|
||||
zoomBy: (step) ->
|
||||
return unless @scale+step > 0
|
||||
|
||||
before = @scale
|
||||
@scale += step
|
||||
@zoom += step
|
||||
|
||||
@view[0] = @view[0]*before/@scale + if step > 0 then 8 else -8
|
||||
@view[1] = @view[1]*before/@scale + if step > 0 then 8 else -8
|
||||
Termap = require __dirname+'/src/Termap'
|
||||
|
||||
termap = new Termap()
|
||||
|
||||
# TODO: abstracing this class, create loader class
|
||||
data = fs.readFileSync __dirname+"/tiles/regensburg.pbf.gz"
|
||||
termap.features = termap._getFeatures termap._parseTile data
|
||||
termap.renderer.features = termap.renderer._getFeatures termap.renderer._parseTile data
|
||||
termap._draw()
|
||||
|
||||
Loading…
Reference in New Issue
Block a user