mirror of
https://github.com/rastapasta/mapscii.git
synced 2024-11-08 01:04:01 +01:00
☑️ adding bounding box calculation from current lat/lng + zoom
This commit is contained in:
parent
19e0421479
commit
8f3de4a159
@ -22,6 +22,7 @@
|
||||
"drawille-canvas-blessed-contrib": "^0.1.3",
|
||||
"keypress": "^0.2.1",
|
||||
"pbf": "^3.0.0",
|
||||
"sphericalmercator": "^1.0.5",
|
||||
"term-mouse": "^0.1.1",
|
||||
"vector-tile": "^1.3.0"
|
||||
}
|
||||
|
@ -4,11 +4,28 @@ Protobuf = require 'pbf'
|
||||
keypress = require 'keypress'
|
||||
fs = require 'fs'
|
||||
zlib = require 'zlib'
|
||||
TermMouse = require('term-mouse')
|
||||
TermMouse = require 'term-mouse'
|
||||
mercator = new (require('sphericalmercator'))()
|
||||
|
||||
utils =
|
||||
deg2rad: (angle) ->
|
||||
# (angle / 180) * Math.PI
|
||||
angle * 0.017453292519943295
|
||||
rad2deg: (angle) ->
|
||||
angle / Math.PI * 180
|
||||
|
||||
digits: (number, digits) ->
|
||||
Math.floor(number*Math.pow(10, digits))/Math.pow(10, digits)
|
||||
metersPerPixel: (zoom, lat = 0) ->
|
||||
utils.rad2deg(40075017*Math.cos(utils.deg2rad(lat))/Math.pow(2, zoom+8))
|
||||
|
||||
console.log utils.metersPerPixel(16, 180)
|
||||
process.exit 0
|
||||
|
||||
|
||||
class Termap
|
||||
config:
|
||||
zoomStep: 1
|
||||
zoomStep: 0.5
|
||||
drawOrder: ["admin", "water", "landuse", "building", "road", "poi_label", "housenum_label"]
|
||||
|
||||
icons:
|
||||
@ -38,12 +55,12 @@ class Termap
|
||||
minZoom: 10
|
||||
color: 8
|
||||
|
||||
# poi_label:
|
||||
# minZoom: 3
|
||||
# color: "yellow"
|
||||
poi_label:
|
||||
minZoom: 3
|
||||
color: "yellow"
|
||||
|
||||
road:
|
||||
color: "white"
|
||||
color: 15
|
||||
|
||||
landuse:
|
||||
color: "green"
|
||||
@ -63,7 +80,13 @@ class Termap
|
||||
mousePosition: [0, 0]
|
||||
mouseDragging: false
|
||||
|
||||
center:
|
||||
lat: 49.019855
|
||||
lng: 12.096956
|
||||
|
||||
zoom: 0
|
||||
view: [-400, -80]
|
||||
|
||||
scale: 4
|
||||
|
||||
constructor: ->
|
||||
@ -173,13 +196,14 @@ class Termap
|
||||
|
||||
@canvas.translate @view[0], @view[1]
|
||||
|
||||
scale = Math.pow 2, @zoom
|
||||
|
||||
for layer in @config.drawOrder
|
||||
continue unless @features?[layer]
|
||||
|
||||
if @config.layers[layer].minZoom and @scale > @config.layers[layer].minZoom
|
||||
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]
|
||||
@ -187,7 +211,7 @@ class Termap
|
||||
|
||||
visible = false
|
||||
points = for point in points
|
||||
p = [point.x/@scale, point.y/@scale]
|
||||
p = [point.x/scale, point.y/scale]
|
||||
if not visible and
|
||||
p[0]+@view[0]>=4 and
|
||||
p[0]+@view[0]<@width-4 and
|
||||
@ -218,8 +242,15 @@ class Termap
|
||||
_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: ->
|
||||
"scale: #{Math.floor(@scale*1000)/1000}"
|
||||
"center: [lat: #{utils.digits @center.lat, 3} lng: #{utils.digits @center.lng, 3}] zoom: #{@zoom} bbox: [#{@_getBBox().map((z) -> utils.digits(z, 3)).join(',')}]"
|
||||
|
||||
notify: (text) ->
|
||||
return if @isDrawing
|
||||
@ -230,6 +261,7 @@ class Termap
|
||||
|
||||
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
|
||||
|
Loading…
Reference in New Issue
Block a user