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🎨 using term-mouse, improving zoom<>view relation
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@ -7,6 +7,10 @@ zlib = require 'zlib'
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mouse = require('term-mouse')()
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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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mouse.start()
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width = null
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height = null
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@ -41,16 +45,17 @@ zlib.gunzip data, (err, buffer) ->
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draw()
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zoom = 0
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view = [-400, -80]
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size = 4
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scale = 4
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flush = ->
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process.stdout.write canvas._canvas.frame()
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lastDraw = null
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drawing = false
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draw = ->
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return if drawing
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lastDraw = Date.now()
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drawing = true
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canvas.clearRect(0, 0, width, height)
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@ -65,7 +70,7 @@ draw = ->
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for line in feature
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found = false
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points = for point in line
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p = [point.x/size, point.y/size]
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p = [point.x/scale, point.y/scale]
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if not found and p[0]+view[0]>=0 and p[0]+view[0]<width and p[1]+view[1]>=0 and p[1]+view[1]<height
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found = true
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p
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@ -83,41 +88,41 @@ draw = ->
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drawing = false
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getStatus = ->
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"view: [#{view.toString()}] scale: [#{size}] columns: [#{process.stdout.columns}]"
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"TerMap up and running!"
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notify = (text) ->
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return if drawing
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process.stdout.write "\r\x1B[K#{getStatus()} #{text}"
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moving = null
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process.stdin.on 'mousepress', (info) ->
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# TODO: file bug @keypress, fails after x>95 / sequence: '\u001b[M#B'
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if info.x > 2048
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info.x = 100
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# moving = null
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# process.stdin.on 'mousepress', (info) ->
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# # TODO: file bug @keypress, fails after x>95 / sequence: '\u001b[M#B'
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# if info.x > 2048
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# info.x = 100
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#
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# if info.button is "left"
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# moving = info
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#
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# else if moving and info.release
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#
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# draw()
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switch info.scroll
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when -1
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size -= .2
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when 1
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size += .2
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zoomBy = (step) ->
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return unless scale+step > 0
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if info.button is 0
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moving = info
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before = scale
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scale += step
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else if moving and info.release
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view[0] -= (moving.x-info.x)*2
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view[1] -= (moving.y-info.y)*4
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moving = null
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draw()
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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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process.stdin.on 'keypress', (ch, key) ->
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result = switch key?.name
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when "q"
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process.exit 0
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when "a" then size += 1
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when "z" then size -= 1
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when "a" then zoomBy(.5)
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when "z" then zoomBy(-.5)
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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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@ -135,5 +140,25 @@ process.stdout.on 'resize', ->
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init()
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draw()
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process.stdin.setRawMode(true)
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process.stdin.resume()
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moving = null
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mousePosition = null
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mouse.on 'click', (event) ->
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if moving and event.button is "left"
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view[0] -= (moving.x-mousePosition.x)*2
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view[1] -= (moving.y-mousePosition.y)*4
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draw()
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moving = null
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mouse.on 'scroll', (event) ->
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# TODO: handle .x/y for directed zoom
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zoomBy .5 * if event.button is "up" then 1 else -1
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draw()
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mouse.on 'move', (event) ->
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return unless event.x <= process.stdout.columns and event.y <= process.stdout.rows
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if not moving and event.button is "left"
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moving = x: event.x, y: event.y
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mousePosition = x: event.x, y: event.y
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