linden (empty) → 0

raw patch · 32 files changed

+2897/−0 lines, 32 filesdep +SHAdep +aesondep +basesetup-changedbinary-added

Dependencies added: SHA, aeson, base, bifunctors, bytestring, containers, deepseq, delay, exceptions, filepath, hashable, hedis, http-types, lens, linden, monad-supply, mtl, random-fu, rosezipper, text, time, unordered-containers, uuid, wai, wai-app-static, wai-cors, wai-extra, warp, zlib

Files

• LICENSE +30/−0
• Linden.hs +52/−0
• Setup.hs +2/−0
• art/add-light.png binary
• art/add-light.svg +257/−0
• art/lamp-45.png binary
• art/light.png binary
• art/loading.png binary
• art/remove.png binary
• art/remove.svg +86/−0
• assets/branch.png binary
• assets/f235a44f2c511cdd.json +1/−0
• client/build/index.html +10/−0
• client/build/linden.js +25/−0
• client/package.json +44/−0
• client/src/GardenClient.js +251/−0
• client/src/ImgCache.js +62/−0
• client/src/Linden.js +794/−0
• client/src/index.js +34/−0
• client/src/index.less +166/−0
• client/src/randomWind.js +19/−0
• client/src/walkTree.js +12/−0
• client/webpack.config.js +35/−0
• extract_grips.py +142/−0
• linden.cabal +87/−0
• src/Linden/RuleDSL.hs +261/−0
• src/Linden/Server.hs +152/−0
• src/Linden/Store/Memory.hs +37/−0
• src/Linden/Store/Redis.hs +75/−0
• src/Linden/TH.hs +8/−0
• src/Linden/Types.hs +255/−0
• tiff/branch.tif binary

@@ -0,0 +1,30 @@+Copyright (c) 2016, davean++All rights reserved.++Redistribution and use in source and binary forms, with or without+modification, are permitted provided that the following conditions are met:++    * Redistributions of source code must retain the above copyright+      notice, this list of conditions and the following disclaimer.++    * Redistributions in binary form must reproduce the above+      copyright notice, this list of conditions and the following+      disclaimer in the documentation and/or other materials provided+      with the distribution.++    * Neither the name of davean nor the names of other+      contributors may be used to endorse or promote products derived+      from this software without specific prior written permission.++THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

@@ -0,0 +1,52 @@+{-# LANGUAGE OverloadedStrings #-}+module Main where++import Data.Text (Text)+import Data.Tree+import Control.Monad+import Control.Monad.Trans+import Control.Monad.Reader+import Data.Random.Distribution.Normal+import Data.Hashable (hash)++import qualified Network.Wai.Handler.Warp as Warp++import Linden.Types+import Linden.RuleDSL+import Linden.Server+import Linden.Store.Memory++import Paths_linden++rule :: ReaderT FilePath IO Rule+rule = do+    basicBranch <- readBranchSym [hash ("basic"::Text)] "branch"+    return . compileRules . noDup $ do+      b <- curBranch+      --cs <- offspring <$> ask+      let s = bScale b+      angSum <- angleSum+      ls <- lightCones+      doNothing 100 -- Doing nothing is always an option+      when (not . null $ ls) $ do+        when (s==1) $ do+          addBranch 50 basicBranch 0 tscl 1+        when (s==tscl) $ do+          addBranch 50 basicBranch 0 tscl 1+          a <- lift . lift $ normal 20 10+          when (angSum < 180) $ addBranch 1 basicBranch a tscl 1+          when (angSum > -180) $ addBranch 1 basicBranch (-a) tscl 1+  where+    tscl = 1++axiom :: AxiomSource+axiom u t =+  return . LS u t 2 [Light 1 (0, 300) (-90) 90 0.7] .+         Just . PrettyJSTree $ Node (Branch 0 (Just "branch.png") (2, 0) (2, 19) 0 1 True True (map hash ["basic"::Text]) Nothing 0.5) []++main :: IO ()+main = do+  bp <- getDataDir+  ms <- memStore+  rule' <- return <$> runReaderT rule bp+  Warp.runEnv 8080 $ lindenApp bp ms "87fhn34wdfd2" 5.0 axiom rule' (return "")

@@ -0,0 +1,2 @@+import Distribution.Simple+main = defaultMain

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C=l(b),D=C.x1+(C.x2-C.x1)/2,S=C.y1+(C.y2-C.y1)/2,k=Math.sqrt(Math.pow(C.x2-C.x1,2)+Math.pow(C.y2-C.y1,2));v.arc(D,S,k/2+6,0,R),v.strokeStyle="red",v.lineWidth=2,v.globalAlpha=.9,v.stroke(),v.restore()}A&&M(t,function(t,e){v.save();var n=t.cache;if(v.beginPath(),v.globalAlpha=.75,v.moveTo(n.x1,n.y1),v.lineTo(n.x2,n.y2),v.strokeStyle=t.proxyFor?"lightgreen":"magenta",v.lineWidth=1,v.stroke(),e(),v.restore(),n.width){var i=l(t);v.beginPath(),v.rect(i.x1,i.y1,i.x2-i.x1,i.y2-i.y1),v.strokeStyle="red",v.stroke()}}),v.restore(),i.onFinish&&i.onFinish()})}function A(t){this.el=t.el,this.opts=t,this.imgCache=new D,this._queued=!1,this._rendering=!1,this._afterNextRender=null,this.resetTree(),this.renderUI()}var f=i(["<div\n      className=","\n      style=","\n      onMouseDown=","\n    />"],["<div\n      className=","\n      style=","\n      onMouseDown=","\n    />"]),p=i(["\n        <div>\n          <div style=",'>\n            <Handle\n              className="rotate"\n              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w(f,x("handle",this.props.className),this.props.style||"",this.handleDragDown.bind(this))}}),w.component("Light",{handleRotate:function(t){var e=this.getDOMNode().firstChild.getBoundingClientRect(),n=t.clientX-e.left,i=t.clientY-e.top,o=s(-Math.atan2(i,n)/O,360),r=Math.sqrt(Math.pow(n,2)+Math.pow(i,2));this.props.onRotate(o,E(0,95-3*(r-42),95))},handleRotateColor:function(t){var e=this.getDOMNode().firstChild.getBoundingClientRect(),n=t.clientX-e.left,i=t.clientY-e.top,o=E(90,s(-Math.atan2(i,n)/O-this.props.pointAngle,360),270)-90;this.props.onChangeColor(o/180)},render:function(){var t=C({left:this.props.x+"px",top:this.props.y+"px",transform:"rotate("+(-this.props.pointAngle-90)+"deg)"}),e="";if(this.props.selected){var n=42+E(0,(95-this.props.beamAngle)/3,95),i=C({position:"absolute",top:n+"px"}),s=180*this.props.temp,a=u(this.props.temp),h=C({position:"absolute",left:39*r(-s)+"px",top:39*o(-s)+"px"}),l=C({backgroundColor:c(a[0],a[1],a[2],1)});e=w(p,i,this.props.disabled,this.handleRotate.bind(this),this.props.onSave,h,l,this.props.disabled,this.handleRotateColor.bind(this),this.props.onSave)}return w(g,x("light",this.props.selected&&"selected"),t,this.props.id,this.props.disabled,this.props.onInteract,this.props.onMove,this.props.onSave,e)}}),A.prototype={STIFFNESS:.25,FRICTION:.1,MAX_LIGHTS:3,FPS:15,resetTree:function(){this.l=null,this.lights=[],this.state={_selected:null}},renderUI:function(){var t="";this.opts.readOnly||this.opts.loading||(t=w(v,this.lights.length===this.MAX_LIGHTS,this.handleCreateLight.bind(this),!this.state._selected,this.handleRemoveSelection.bind(this)));var 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r=this.state[t.id];r||(r=this.state[t.id]={angle:t.angle,av:0}),r.node=t,i()}.bind(this)),this.lights=t.lights||[];var i=Date.now();this._afterNextRender=function(){if(this.opts.loading=!1,this.renderUI(),this._afterNextRender=null,this.opts.debug){var o=Date.now()-i;console.debug("updated. rendered",e,"nodes in",o,"ms","| supply:",t.supply),console.table(n)}}.bind(this),this.renderCanvas()},addWind:function(t,e,n){M(this.l,function(i,r){if(!i.rigid&&i.cache){var s=this.state[i.id],a=o(t-i.cache.angle),c=1-n+Math.random()*n;s.av+=i.waviness*c*(1/Math.sqrt(i.cache.scale))*a*e}r()}.bind(this)),this.queueStep()},queueStep:function(){this._queued||(setTimeout(this.step.bind(this),1e3/this.FPS),this._queued=Date.now())},step:function(){this.opts.beforeStep&&this.opts.beforeStep(),M(this.l,function(t,e){var n=this.state[t.id];n.av+=(1-t.waviness)*t.scale*this.STIFFNESS*(t.angle-n.angle),n.av+=-n.av*this.FRICTION,n.angle+=n.av,e()}.bind(this)),this.renderCanvas(),this._queued=!1,this.queueStep()},renderCanvas:function(){!this._rendering&&this.l&&(this._rendering=!0,d(this.l,this.state,this.lights,{width:this.opts.width,height:this.opts.height,el:this.el.querySelector("canvas"),urlPrefix:this.opts.urlPrefix,imgCache:this.imgCache,debug:this.opts.debug,onFinish:function(){this._afterNextRender&&this._afterNextRender(),this._rendering=!1}.bind(this)}))},handleMouseDown:function(){this.el.querySelector(".frame").focus()},_deselect:function(){this.state._selected=null,this.renderCanvas(),this.renderUI()},handleCanvasMouseDown:function(t){if(!this.opts.readOnly){this._deselect();var e=this.el.getBoundingClientRect(),n=t.clientX-e.left,i=this.opts.height-(t.clientY-e.top),o=null,r=Number.MAX_VALUE;if(M(this.l,function(t,e){var s=t.cache;if(s&&s.width&&!t.immutable){var a=l(t);if(a.x1<=n&&a.x2>=n&&a.y1<=i&&a.y2>=i){var c=(a.x2-a.x1)*(a.y2-a.y1);r>c&&(o=t,r=c)}}e()}),o){var s=o.proxyFor||o.id;this.state._selected={kind:"node",id:s,circled:o.id}}this.renderCanvas(),this.renderUI()}},handleKeyDown:function(t){46!==t.which&&8!==t.which||(this.handleRemoveSelection(),t.preventDefault())},handleLightInteract:function(t){this.opts.readOnly||(this.state._selected={kind:"light",id:t},this.renderCanvas(),this.renderUI())},handleLightMove:function(t,e){+var n=this.el.getBoundingClientRect(),i=E(0,e.clientX-n.left,this.opts.width),o=E(0,this.opts.height-(e.clientY-n.top),this.opts.height);this.setLight(t,{pos:[i,o]})},handleLightRotate:function(t,e,n){this.setLight(t,{pointAngle:e,beamAngle:n})},handleLightChangeColor:function(t,e){this.setLight(t,{temp:e})},setLight:function(t,e){this.opts.onLightChanging(t);var n=this.lights.findIndex(function(e){return 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@@ -0,0 +1,44 @@+{+  "name": "xkcd-linden",+  "version": "0.0.1",+  "description": "Client side of 2016-4-1",+  "keywords": [+    "xkcd"+  ],+  "author": {+    "name": "Max Goodman",+    "email": "c@chromakode.com"+  },+  "license": "MIT",+  "scripts": {+    "lint": "eslint .",+    "start": "webpack-dev-server --devtool inline-source-map --content-base build/",+    "build": "webpack -p --progress"+  },+  "main": "src/index.js",+  "dependencies": {+    "core-js": "~2.2.1",+    "diablo": "~0.0.2",+    "clamp": "~1.0.1",+    "classnames": "~2.2.3",+    "inline-style": "~2.0.0",+    "event-source-polyfill": "~0.0.7",+    "whatwg-fetch": "~0.11.0"+  },+  "devDependencies": {+    "url-loader": "~0.5.7",+    "css-loader": "~0.23.1",+    "style-loader": "~0.13.1",+    "autoprefixer-loader": "~3.2.0",+    "less-loader": "~2.2.3",+    "less": "~2.6.1",+    "babel-loader": "~6.2.4",+    "babel-core": "~6.7.4",+    "babel-plugin-transform-es2015-template-literals": "~6.6.5",+    "webpack": "~1.12.14",+    "webpack-dev-server": "~1.14.1",+    "eslint": "~2.5.3",+    "eslint-config-airbnb": "~6.2.0",+    "babel-eslint": "~6.0.2"+  }+}

@@ -0,0 +1,251 @@+require('event-source-polyfill')++var Linden = require('./Linden')+var walkTree = require('./walkTree')+var randomWind = require('./randomWind')++var GardenClient = function GardenClient(opts) {+  this.opts = opts+  this.data = null+  this.gardenId = null+  this.gardenKey = null+}+GardenClient.prototype = {+  record: function record(ref, name) {+    new Image().src = 'http://xkcd.com/events.gif?re=' + ref + '&ev=' + name+  },++  log: function log() {+    if (this.opts.debug) {+      console.log.apply(console, arguments)  // eslint-disable-line no-console+    }+  },++  _url: function _url() {+    var serverURL = this.opts.endpoint + 'run'+    if (this.gardenId) {+      serverURL += '/' + this.gardenId+    }+    return serverURL+  },++  _connect: function() {+    var serverURL = this._url()++    this.source = new EventSource(serverURL)+    this.log('connecting to event source:', serverURL)++    this.source.addEventListener('open', this.onConnect.bind(this), false)+    this.source.addEventListener('error', this.onConnectionError.bind(this), false)+    this.source.addEventListener('linden-key', this.onLindenKey.bind(this), false)+    this.source.addEventListener('linden', this.onLindenUpdate.bind(this), false)+    this.source.addEventListener('reload', this.onReload.bind(this), false)+  },++  run: function run() {+    try {+      if (this.opts.endpoint) {+        if (location.hash) {+          this.gardenId = location.hash.substr(1)+          this.gardenKey = localStorage['key-' + this.gardenId]+        }+        this._connect()+      }++      this.linden = new Linden({+        el: this.opts.el,+        width: this.opts.width,+        height: this.opts.height,+        title: this.opts.title,+        urlPrefix: this.opts.imgPrefix,+        loading: true,+        readOnly: !this.gardenKey,+        debug: this.opts.debug,+        onLightChanging: this.handleLightChanging.bind(this),+        onSetLight: this.handleSetLight.bind(this),+        onRemoveLight: this.handleRemoveLight.bind(this),+        onPruneNode: this.handlePruneNode.bind(this),+      })++      if (this.opts.data) {+        this.linden.update(this.opts.data)+      }++      randomWind(this.linden)+    } catch (e) {+      this.record(this.opts.name, 'js_error')+      throw e+    }++    return this+  },++  onConnect: function onConnect() {+    this.record(this.opts.name, 'connect_start')+    this.dirtyLights = {}+    this.inFlightRequests = 0+    this.linden.renderUI()+  },++  onConnectionError: function onConnectionError(ev) {+    this.log('connection error', ev)+    this.record(this.opts.name, 'connect_error')+    this.linden.opts.loading = true+    this.linden.resetTree()+    this.linden.renderUI()+    if (this.source.url !== this._url()) {+      // we need to change the url to re-fetch the current tree+      this.source.close()+      this._connect()+    }+  },++  onLindenKey: function onLindenKey(ev) {+    this.log('linden key from EventSource', ev)+    var data = JSON.parse(ev.data)+    this.gardenId = location.hash = data.garden+    this.gardenKey = localStorage['key-' + data.garden] = data.key++    // TODO: this violates encapsulation+    this.linden.opts.readOnly = false+    this.linden.renderUI()+  },++  _acceptUpdate: function _acceptUpdate() {+    if (this.inFlightRequests > 0) {+      this.log('rejecting update, inflight:', this.inFlightRequests)+      return false+    }++    for (var k in this.dirtyLights) {+      if (this.dirtyLights.hasOwnProperty(k) && this.dirtyLights[k] === true) {+        this.log('rejecting update, dirty light:', k)+        return false+      }+    }++    return true+  },++  _update: function _update(data) {+    if (!this._acceptUpdate()) {+      // discard possibly conflicting updates+      return+    }+    this.data = data+    this.linden.update(data)+  },++  onLindenUpdate: function onLindenUpdate(ev) {+    this.log('linden from EventSource', ev)+    this._update(JSON.parse(ev.data))+  },++  onReload: function onReload() {+    var delay = Math.round(Math.random() * this.opts.spread.reload)+    this.log('reloading in', delay + 5, 'seconds')+    setTimeout(function doReload() {+      this.record(this.opts.name, 'reloading')++      // give the record a little time to be sent+      setTimeout(function delayedReload() {+        location.reload()+      }, 5 * 1000)+    }, delay * 1000)+  },++  request: function request(url, options) {+    var onFinished = function onRequestFinished() {+      this.inFlightRequests--+      this.log('inflight--', this.inFlightRequests)+    }.bind(this)++    var fetchOptions = {+      method: 'POST',+    }+    Object.assign(fetchOptions, options)++    fetchOptions.body = JSON.stringify(options.body)++    this.log('request', url, fetchOptions)+    var promise = fetch(url, fetchOptions)+    promise.then(onFinished, onFinished)+    this.inFlightRequests+++    this.log('inflight++', this.inFlightRequests)+    return promise+  },++  handleLightChanging: function handleLightChanging(id) {+    this.dirtyLights[id] = true+  },++  handleSetLight: function handleSetLight(id, data) {+    this.log('set light:', id, data)++    this.request(this.opts.endpoint + 'edit', {+      body: Object.assign({+        tag: 'EditLight',+        garden: this.data.garden,+        editKey: this.gardenKey,+        light: id,+      }, data),+    })+      .then(function onResponse(resp) { return resp.json() })+      .then(function onJSON(newLights) {+        this._update(Object.assign({}, this.data, {+          lights: newLights,+        }))+      }.bind(this))++    delete this.dirtyLights[id]+  },++  _sendRemove: function _sendRemove(id) {+    this.request(this.opts.endpoint + 'edit', {+      body: {+        tag: 'Del',+        garden: this.data.garden,+        editKey: this.gardenKey,+        node: id,+      },+    })+  },++  handleRemoveLight: function handleRemoveLight(id) {+    this.log('remove light:', id)++    var newLights = this.data.lights.filter(function filterLights(light) {+      return light.id !== id+    })++    this._update(Object.assign({}, this.data, {+      lights: newLights,+    }))++    this._sendRemove(id)+  },++  handlePruneNode: function handlePruneNode(id) {+    this.log('prune node:', id)++    var rootNode = { children: [] }+    var parentNode = rootNode+    walkTree(this.data.tree, function pruneVisit(node, descend) {+      var origParentNode = parentNode+      parentNode = { node: node, children: [] }+      if (node.id !== id) {+        origParentNode.children.push(parentNode)+      }+      descend()+      parentNode = origParentNode+    })++    this._update(Object.assign({}, this.data, {+      tree: rootNode.children[0],+    }))++    this._sendRemove(id)+  },+}++module.exports = GardenClient

@@ -0,0 +1,62 @@+function ImgCache() {+  this.imgs = {}+  this.callbacks = {}+}+ImgCache.prototype = {+  get: function get(src, callback) {+    var img = this.imgs[src]++    if (img === undefined) {+      this.imgs[src] = true+      this.callbacks[src] = [callback]+      img = new Image()+      img.onload = this._onDone.bind(this, src, img, img)+      img.onerror = this._onDone.bind(this, src, img, false)+      img.crossOrigin = 'anonymous'+      img.src = src+    } else if (img === true) {+      // loading+      this.callbacks[src].push(callback)+    } else {+      // release zalgo+      if (callback) {+        callback(src, img)+      }+    }+  },++  _onDone: function _onDone(src, img, result) {+    this.imgs[src] = result+    for (var i = 0; i < this.callbacks[src].length; i++) {+      var callback = this.callbacks[src][i]+      if (callback) {+        callback(src, result)+      }+    }+    delete this.callbacks[src]+  },++  getAll: function getAll(srcs, callback) {+    if (!srcs.length) {+      callback([])+      return+    }++    var remaining = srcs.length+    var results = {}++    function loaded(src, img) {+      results[src] = img+      remaining--+      if (remaining === 0) {+        callback(results)+      }+    }++    for (var i = 0; i < srcs.length; i++) {+      this.get(srcs[i], loaded)+    }+  },+}++module.exports = ImgCache

@@ -0,0 +1,794 @@+var x = require('diablo')+var classNames = require('classnames')+var clamp = require('clamp')+var inlineStyle = require('inline-style')++var ImgCache = require('./ImgCache')+var walkTree = require('./walkTree')++var PI2 = Math.PI / 2+var TWOPI = 2 * Math.PI+var DEG = PI2 / 90++function sin(angle) {+  return Math.sin(angle * DEG)+}++function cos(angle) {+  return Math.cos(angle * DEG)+}++function mod(v, m) {+  return (v % m + m) % m+}++function rotBounds(a, ox, oy, x1, y1, x2, y2) {+  var rx1+  var ry1+  var rx2+  var ry2+  var am = mod(a, 360)+  if (am <= 90) {+    rx1 = x1+    ry1 = y2+    rx2 = x2+    ry2 = y1+  } else if (am <= 180) {+    rx1 = x2+    ry1 = y1+    rx2 = x1+    ry2 = y2+  } else if (am <= 270) {+    rx1 = x2+    ry1 = y2+    rx2 = x1+    ry2 = y1+  } else {+    rx1 = x1+    ry1 = y2+    rx2 = x2+    ry2 = y1+  }+  rx1 -= ox+  ry1 -= oy+  rx2 -= ox+  ry2 -= oy+  var newBounds = {+    x1: ox + rx1 * cos(am) - ry1 * sin(am),+    y1: oy + rx1 * sin(am) + ry1 * cos(am),+    x2: ox + rx2 * cos(am) - ry2 * sin(am),+    y2: oy + rx2 * sin(am) + ry2 * cos(am),+  }++  // FIXME: not sure why these are transposed :(+  if (newBounds.x2 < newBounds.x1) {+    var swapx = newBounds.x2+    newBounds.x2 = newBounds.x1+    newBounds.x1 = swapx+  }+  if (newBounds.y2 < newBounds.y1) {+    var swapy = newBounds.y2+    newBounds.y2 = newBounds.y1+    newBounds.y1 = swapy+  }++  return newBounds+}++function rgba(r, g, b, a) {+  return 'rgba(' + 100 * r + '%, ' + 100 * g + '%, ' + 100 * b + '%, ' + a + ')'+}++function tempToRGB(t) {+  if (t < 0.32) {+    return [1, 0.5 + 0.5 * t / 0.32, 0.5]+  }+  if (t < 0.64) {+    return [1, 1, 0.5 + 0.5 * (t - 0.32) / 0.32]+  }+  return [0.75 + 0.25 * (1 - t) / 0.36, 0.75 + 0.25 * (1 - t) / 0.36, 1]+}++function walkPositions(l, state, visit) {+  // parent cache+  var pc = {+    x2: 0,+    y2: 0,+    scale: 1,+    angle: 0,+  }+  walkTree(l, function visitPosition(node, descend) {+    var nodeState = state[node.id]+    var c = node.cache+    if (!c) {+      c = node.cache = {}  // eslint-disable-line no-param-reassign+    }+    c.scale = pc.scale * node.scale+    c.angle = pc.angle + nodeState.angle+    var dx = node.attach[0] - node.root[0]+    var dy = node.attach[1] - node.root[1]+    c.x1 = pc.x2+    c.y1 = pc.y2+    c.x2 = c.x1 + c.scale * (dx * cos(c.angle) + dy * sin(c.angle))+    c.y2 = c.y1 + c.scale * (-dx * sin(c.angle) + dy * cos(c.angle))++    var origPC = pc+    pc = c+    visit(node, descend)+    pc = origPC+  })+}++function calcBox(node) {+  var c = node.cache+  var bx1 = c.x1 - node.root[0]+  var by1 = c.y1 - node.root[1]+  return rotBounds(+    -c.angle,+    bx1 + node.root[0],+    by1 + node.root[1],+    bx1,+    by1,+    bx1 + c.scale * c.width,+    by1 + c.scale * c.height+  )+}++function renderLinden(l, state, lights, opts) {+  var w = opts.width+  var h = opts.height+  var debug = opts.debug+  var urlPrefix = opts.urlPrefix+  var imgPrefix = ''+  var imgCache = opts.imgCache+  var ctx = opts.el.getContext('2d')+  var density = Number(opts.el.getAttribute('data-density'))++  if (density > 1) {+    imgPrefix = '2x-'+  }++  var imgs = []+  walkTree(l, function visitImg(node, descend) {+    if (node.img) {+      imgs.push(urlPrefix + imgPrefix + node.img)+    }+    descend()+  })++  function getState(node, prop) {+    return state[node.id][prop]+  }++  imgCache.getAll(imgs, function withImgs(loadedImgs) {+    ctx.save()+    ctx.scale(density, -density)+    ctx.translate(0, -h)+    ctx.clearRect(0, 0, w, h)++    var circledNode+    walkPositions(l, state, function visitDraw(node, descend) {+      var c = node.cache+      ctx.save()+      ctx.rotate(getState(node, 'angle') * -DEG)+      ctx.scale(node.scale, node.scale)+      if (state._selected) {+        if (node.id === state._selected.id) {+          ctx.globalAlpha = 0.5+        }+        if (node.id === state._selected.circled) {+          circledNode = node+        }+      }+      if (node.img) {+        var imgUrl = urlPrefix + imgPrefix + node.img+        var img = loadedImgs[imgUrl]+        if (img) {+          ctx.save()+          ctx.scale(1 / density, -1 / density)+          ctx.translate(0, -img.height)+          ctx.drawImage(img, -node.root[0] * density, node.root[1] * density)+          ctx.restore()+          c.width = img.width / density+          c.height = img.height / density+        }+      }+      ctx.translate(node.attach[0] - node.root[0], node.attach[1] - node.root[1])+      descend()+      ctx.restore()+    })++    // lights+    var mixCanvas = document.createElement('canvas')+    mixCanvas.width = opts.el.width+    mixCanvas.height = opts.el.height+    var lctx = mixCanvas.getContext('2d')+    lctx.scale(density, density)+    var lightRadius = Math.sqrt(Math.pow(w, 2) + Math.pow(h, 2))+    function drawLights(callback) {+      for (var i = 0; i < lights.length; i++) {+        var light = lights[i]+        lctx.save()+        lctx.beginPath()+        lctx.moveTo(light.pos[0], light.pos[1])+        var x1 = light.pos[0] + lightRadius * cos(light.pointAngle - light.beamAngle / 2)+        var y1 = light.pos[1] + lightRadius * sin(light.pointAngle - light.beamAngle / 2)+        lctx.lineTo(x1, y1)+        lctx.arc(light.pos[0], light.pos[1], lightRadius,+          (light.pointAngle - light.beamAngle / 2) * DEG,+          (light.pointAngle + light.beamAngle / 2) * DEG+        )+        lctx.lineTo(light.pos[0], light.pos[1])+        callback(light)+        lctx.restore()+      }+    }+    drawLights(function drawLightFill(light) {+      var grad = lctx.createRadialGradient(+        light.pos[0], light.pos[1], 0,+        light.pos[0], light.pos[1], lightRadius+      )+      var color = tempToRGB(light.temp)+      grad.addColorStop(0, rgba(color[0], color[1], color[2], 1))+      grad.addColorStop(1, rgba(color[0], color[1], color[2], 0))+      lctx.fillStyle = grad+      lctx.globalCompositeOperation = 'lighten'+      lctx.fill()+    })+    drawLights(function drawLightStroke(light) {+      lctx.globalAlpha = 0.4+      lctx.strokeStyle = 'black'+      lctx.stroke()+    })+    ctx.save()+    ctx.scale(1 / density, 1 / density)+    ctx.globalCompositeOperation = 'source-atop'+    ctx.globalAlpha = 0.65+    ctx.drawImage(mixCanvas, 0, 0)+    ctx.globalAlpha = 0.25+    ctx.globalCompositeOperation = 'destination-over'+    ctx.drawImage(mixCanvas, 0, 0)+    ctx.restore()++    if (circledNode) {+      var c = circledNode.cache+      ctx.save()+      ctx.beginPath()+      var circledBox = calcBox(circledNode)+      var cx = circledBox.x1 + (circledBox.x2 - circledBox.x1) / 2+      var cy = circledBox.y1 + (circledBox.y2 - circledBox.y1) / 2+      var d = Math.sqrt(Math.pow(circledBox.x2 - circledBox.x1, 2) + Math.pow(circledBox.y2 - circledBox.y1, 2))+      ctx.arc(cx, cy, d / 2 + 6, 0, TWOPI)+      ctx.strokeStyle = 'red'+      ctx.lineWidth = 2+      ctx.globalAlpha = 0.9+      ctx.stroke()+      ctx.restore()+    }++    if (debug) {+      walkTree(l, function visitDrawDebug(node, descend) {+        ctx.save()+        var c2 = node.cache+        ctx.beginPath()+        ctx.globalAlpha = 0.75+        ctx.moveTo(c2.x1, c2.y1)+        ctx.lineTo(c2.x2, c2.y2)+        ctx.strokeStyle = node.proxyFor ? 'lightgreen' : 'magenta'+        ctx.lineWidth = 1+        ctx.stroke()+        descend()+        ctx.restore()+        if (c2.width) {+          var box = calcBox(node)+          ctx.beginPath()+          ctx.rect(box.x1, box.y1, (box.x2 - box.x1), (box.y2 - box.y1))+          ctx.strokeStyle = 'red'+          ctx.stroke()+        }+      })+    }++    ctx.restore()++    if (opts.onFinish) {+      opts.onFinish()+    }+  })+}++x.component('Handle', {+  componentDidMount: function componentDidMount() {+    this._handleDragMove = this.handleDragMove.bind(this)+    this._handleDragUp = this.handleDragUp.bind(this)++    // ontouchstart attribute doesn't seem to work :(+    this.getDOMNode().firstChild.addEventListener('touchstart', this.handleDragDown.bind(this))+  },++  _stopListening: function _stopListening() {+    window.removeEventListener('mousemove', this._handleDragMove, false)+    window.removeEventListener('mouseup', this._handleDragUp, false)+    window.removeEventListener('touchmove', this._handleDragMove, false)+    window.removeEventListener('touchend', this._handleDragUp, false)+  },++  componentWillUnmount: function componentWillUnmount() {+    this._stopListening()+  },++  _normalizeEvent: function _normalizeEvent(ev) {+    if (ev.touches && ev.touches[0]) {+      ev.clientX = ev.touches[0].clientX  // eslint-disable-line no-param-reassign+      ev.clientY = ev.touches[0].clientY  // eslint-disable-line no-param-reassign+    }+  },++  handleDragDown: function handleDragDown(ev) {+    if (this.props.disabled) {+      return+    }+    document.documentElement.style.cursor = 'move'+    window.addEventListener('mousemove', this._handleDragMove, false)+    window.addEventListener('mouseup', this._handleDragUp, false)+    window.addEventListener('touchmove', this._handleDragMove, false)+    window.addEventListener('touchend', this._handleDragUp, false)+    if (this.props.onGrab) {+      this._normalizeEvent(ev)+      this.props.onGrab(ev)+    }+    ev.preventDefault()+  },++  handleDragUp: function handleDragUp(ev) {+    document.documentElement.style.cursor = null+    this._stopListening()+    if (this.props.onRelease) {+      this._normalizeEvent(ev)+      this.props.onRelease(ev)+    }+    ev.preventDefault()+  },++  handleDragMove: function handleDragMove(ev) {+    if (this.props.onDrag) {+      this._normalizeEvent(ev)+      this.props.onDrag(ev)+    }+    ev.preventDefault()+  },++  render: function render() {+    // FIXME: diablo issue: undefined / null gets stringified+    return x`<div+      className=${classNames('handle', this.props.className)}+      style=${this.props.style || ''}+      onMouseDown=${this.handleDragDown.bind(this)}+    />`+  },+})++x.component('Light', {+  handleRotate: function handleRotate(ev) {+    // TODO: key?+    var box = this.getDOMNode().firstChild.getBoundingClientRect()+    var px = ev.clientX - box.left+    var py = ev.clientY - box.top+    var angle = mod(-Math.atan2(py, px) / DEG, 360)+    var distance = Math.sqrt(Math.pow(px, 2) + Math.pow(py, 2))+    this.props.onRotate(angle, clamp(0, 95 - (distance - 42) * 3, 95))+  },++  handleRotateColor: function handleRotateColor(ev) {+    var box = this.getDOMNode().firstChild.getBoundingClientRect()+    var px = ev.clientX - box.left+    var py = ev.clientY - box.top+    var angle = clamp(90, mod(-Math.atan2(py, px) / DEG - this.props.pointAngle, 360), 270) - 90+    this.props.onChangeColor(angle / 180)+  },++  render: function render() {+    var style = inlineStyle({+      left: this.props.x + 'px',+      top: this.props.y + 'px',+      transform: `rotate(${-this.props.pointAngle - 90}deg)`,+    })++    var handles = ''+    if (this.props.selected) {+      var d = 42 + clamp(0, (95 - this.props.beamAngle) / 3, 95)+      var rotHandlePosStyle = inlineStyle({+        position: 'absolute',+        top: d + 'px',+      })++      var colorAngle = 180 * this.props.temp+      var color = tempToRGB(this.props.temp)+      var colorHandlePosStyle = inlineStyle({+        position: 'absolute',+        left: 39 * cos(-colorAngle) + 'px',+        top: 39 * sin(-colorAngle) + 'px',+      })+      var colorHandleStyle = inlineStyle({+        backgroundColor: rgba(color[0], color[1], color[2], 1),+      })++      handles = x`+        <div>+          <div style=${rotHandlePosStyle}>+            <Handle+              className="rotate"+              disabled=${this.props.disabled}+              onDrag=${this.handleRotate.bind(this)}+              onRelease=${this.props.onSave}+            ></Handle>+          </div>+          <div style=${colorHandlePosStyle}>+            <Handle+              className="color"+              style=${colorHandleStyle}+              disabled=${this.props.disabled}+              onDrag=${this.handleRotateColor.bind(this)}+              onRelease=${this.props.onSave}+            ></Handle>+          </div>+        </div>+      `+    }++    return x`+      <div+        className=${classNames('light', this.props.selected && 'selected')}+        style=${style}+        data-light-id=${this.props.id}+      >+        <div>+          <Handle+            className="position"+            disabled=${this.props.disabled}+            onGrab=${this.props.onInteract}+            onDrag=${this.props.onMove}+            onRelease=${this.props.onSave}+          ></Handle>+        </div>+        ${handles}+      </div>+    `+  },+})++function Linden(opts) {+  this.el = opts.el+  this.opts = opts+  this.imgCache = new ImgCache()+  this._queued = false+  this._rendering = false+  this._afterNextRender = null+  this.resetTree()+  this.renderUI()+}+Linden.prototype = {+  STIFFNESS: 0.25,+  FRICTION: 0.1,+  MAX_LIGHTS: 3,+  FPS: 15,++  resetTree: function resetTree() {+    this.l = null+    this.lights = []+    this.state = { _selected: null }+  },++  renderUI: function renderUI() {+    var tools = ''+    if (!this.opts.readOnly && !this.opts.loading) {+      tools = x`+        <div className="tools">+          <button+            className="add-light"+            disabled=${this.lights.length === this.MAX_LIGHTS}+            title="Create new light"+            onClick=${this.handleCreateLight.bind(this)}+          >+</button>+          <button+            className="remove"+            disabled=${!this.state._selected}+            title="Remove selected (delete key)"+            onClick=${this.handleRemoveSelection.bind(this)}+          >x</button>+        </div>+      `+    }++    var style = inlineStyle({+      width: this.opts.width + 'px',+      height: this.opts.height + 'px',+    })++    var canvasMultiplier = window.devicePixelRatio > 1 ? 2 : 1+    var canvasStyle = inlineStyle({+      transformOrigin: '0 0',+      transform: `scale(${1 / canvasMultiplier}, ${1 / canvasMultiplier})`,+    })++    var className = classNames('frame', this.opts.loading && 'loading')+    x.render(x`+      <div+        onMouseDown=${this.handleMouseDown.bind(this)}+        onKeyDown=${this.handleKeyDown.bind(this)}+        style=${style}+        className=${className}+        title=${this.opts.title}+        tabIndex="1"+      >+        ${tools}+        ${this.opts.loading ? x`<div><div className="spinner"></div><div className="spinner-text">loading</div>` : ''}+        <div className="content">+          <canvas+            data-density=${canvasMultiplier}+            width=${this.opts.width * canvasMultiplier}+            height=${this.opts.height * canvasMultiplier}+            style=${canvasStyle}+            onMouseDown=${this.handleCanvasMouseDown.bind(this)}+          ></canvas>+          ${this.lights.map(function renderLight(light) {+            var selected = Boolean(+              this.state._selected &&+              this.state._selected.kind === 'light' &&+              this.state._selected.id === light.id+            )+            return x`<Light+              id=${light.id}+              disabled=${this.opts.readOnly}+              selected=${selected}+              x=${light.pos[0]}+              y=${this.opts.height - light.pos[1]}+              temp=${light.temp}+              pointAngle=${light.pointAngle}+              beamAngle=${light.beamAngle}+              onInteract=${this.handleLightInteract.bind(this, light.id)}+              onMove=${this.handleLightMove.bind(this, light.id)}+              onRotate=${this.handleLightRotate.bind(this, light.id)}+              onChangeColor=${this.handleLightChangeColor.bind(this, light.id)}+              onSave=${this.saveLight.bind(this, light.id)}+            />`+          }.bind(this))}+        </div>+      </div>+    `, this.el)+  },++  update: function update(data) {+    this.l = data.tree++    var nodeCount = 0+    var nodeTypeCount = {}+    walkTree(this.l, function visitInitState(node, descend) {+      nodeCount+++      var nodeType = node.img || 'proxy'+      nodeTypeCount[nodeType] = nodeTypeCount[nodeType] || {count: 0}+      nodeTypeCount[nodeType].count++++      var nodeState = this.state[node.id]+      if (!nodeState) {+        nodeState = this.state[node.id] = {+          angle: node.angle,+          av: 0,+        }+      }+      nodeState.node = node+      descend()+    }.bind(this))++    this.lights = data.lights || []++    var startTime = Date.now()++    this._afterNextRender = function afterRender() {+      this.opts.loading = false+      this.renderUI()+      this._afterNextRender = null++      if (this.opts.debug) {+        var duration = Date.now() - startTime+        console.debug('updated. rendered', nodeCount, 'nodes in', duration, 'ms', '| supply:', data.supply)+        console.table(nodeTypeCount)+      }+    }.bind(this)++    this.renderCanvas()+  },++  addWind: function addWind(angle, magnitude, spread) {+    walkTree(this.l, function visitWind(node, descend) {+      if (!node.rigid && node.cache) {+        var nodeState = this.state[node.id]+        var alignment = sin(angle - node.cache.angle)+        var spreadMag = (1 - spread) + Math.random() * spread+        nodeState.av += node.waviness * spreadMag * (1 / Math.sqrt(node.cache.scale)) * alignment * magnitude+      }+      descend()+    }.bind(this))++    this.queueStep()+  },++  queueStep: function queueStep() {+    if (!this._queued) {+      // note that actual FPS is below this.FPS since we don't adapt sleep time+      setTimeout(this.step.bind(this), 1000 / this.FPS)+      this._queued = Date.now()+    }+  },++  step: function step() {+    if (this.opts.beforeStep) {+      this.opts.beforeStep()+    }++    walkTree(this.l, function visitStep(node, descend) {+      var nodeState = this.state[node.id]+      nodeState.av += (1 - node.waviness) * node.scale * this.STIFFNESS * (node.angle - nodeState.angle)+      nodeState.av += -nodeState.av * this.FRICTION+      nodeState.angle += nodeState.av+      descend()+    }.bind(this))++    this.renderCanvas()++    this._queued = false+    this.queueStep()+  },++  renderCanvas: function renderCanvas() {+    if (this._rendering || !this.l) {+      return+    }+    this._rendering = true+    renderLinden(this.l, this.state, this.lights, {+      width: this.opts.width,+      height: this.opts.height,+      el: this.el.querySelector('canvas'),+      urlPrefix: this.opts.urlPrefix,+      imgCache: this.imgCache,+      debug: this.opts.debug,+      onFinish: function onRenderFinish() {+        if (this._afterNextRender) {+          this._afterNextRender()+        }+        this._rendering = false+      }.bind(this),+    })+  },++  handleMouseDown: function handleMouseDown() {+    this.el.querySelector('.frame').focus()+  },++  _deselect: function _deselect() {+    this.state._selected = null+    this.renderCanvas()+    this.renderUI()+  },++  handleCanvasMouseDown: function handleCanvasMouseDown(ev) {+    if (this.opts.readOnly) {+      return+    }+    this._deselect()++    var box = this.el.getBoundingClientRect()+    var x0 = ev.clientX - box.left+    var y0 = this.opts.height - (ev.clientY - box.top)+    var hit = null+    var hitArea = Number.MAX_VALUE+    walkTree(this.l, function visitCheckProximity(node, descend) {+      var c = node.cache+      if (c && c.width && !node.immutable) {+        var box = calcBox(node)+        if (box.x1 <= x0 && box.x2 >= x0 &&+            box.y1 <= y0 && box.y2 >= y0) {+          var area = (box.x2 - box.x1) * (box.y2 - box.y1)+          if (area < hitArea) {+            hit = node+            hitArea = area+          }+        }+      }+      descend()+    })++    if (hit) {+      var selectedId = hit.proxyFor || hit.id+      this.state._selected = { kind: 'node', id: selectedId, circled: hit.id }+    }+    this.renderCanvas()+    this.renderUI()+  },++  handleKeyDown: function handleKeyDown(ev) {+    if (ev.which === 46 || ev.which === 8) { // backspace or delete+      this.handleRemoveSelection()+      ev.preventDefault()+    }+  },++  handleLightInteract: function handleLightInteract(id) {+    if (this.opts.readOnly) {+      return+    }+    this.state._selected = { kind: 'light', id: id }+    this.renderCanvas()+    this.renderUI()+  },++  handleLightMove: function handleLightMove(id, ev) {+    var box = this.el.getBoundingClientRect()+    var px = clamp(0, ev.clientX - box.left, this.opts.width)+    var py = clamp(0, this.opts.height - (ev.clientY - box.top), this.opts.height)+    this.setLight(id, {+      pos: [px, py],+    })+  },++  handleLightRotate: function handleLightRotate(id, pointAngle, beamAngle) {+    this.setLight(id, {+      pointAngle: pointAngle,+      beamAngle: beamAngle,+    })+  },++  handleLightChangeColor: function handleLightChangeColor(id, temp) {+    this.setLight(id, {+      temp: temp,+    })+  },++  setLight: function setLight(id, data) {+    this.opts.onLightChanging(id)+    var idx = this.lights.findIndex(function matchLight(light) { return light.id === id })+    if (idx === -1) {+      return+    }+    Object.assign(this.lights[idx], data)+    this.renderCanvas()+    this.renderUI()+  },++  saveLight: function saveLight(id) {+    var idx = this.lights.findIndex(function matchLight(light) { return light.id === id })+    if (idx === -1) {+      return+    }+    this.opts.onSetLight(id, this.lights[idx])+  },++  handleCreateLight: function handleCreateLight() {+    var lx = this.opts.width * Math.random()+    var ly = (this.opts.height + this.opts.height * Math.random()) / 2+    var tx = this.opts.width / 2+    var ty = 0+    this.opts.onSetLight(null, {+      pos: [lx, ly],+      pointAngle: Math.atan2(ty - ly, tx - lx) / DEG,+      beamAngle: 45 + 45 * Math.random(),+      temp: 0.5,+    })+  },++  handleRemoveSelection: function handleRemoveSelection() {+    if (!this.state._selected) {+      return+    }++    if (this.state._selected.kind === 'node') {+      this.opts.onPruneNode(this.state._selected.id)+    } else if (this.state._selected.kind === 'light') {+      this.opts.onRemoveLight(this.state._selected.id)+    }++    this._deselect()+  },+}++module.exports = Linden

@@ -0,0 +1,34 @@+require('core-js/fn/object/assign')+require('core-js/fn/array/map')+require('core-js/fn/array/find-index')+require('core-js/fn/array/filter')+require('core-js/fn/date/now')+require('core-js/es6/promise')+require('whatwg-fetch')++require('./index.less')+var GardenClient = require('./GardenClient')++var scripts = document.getElementsByTagName('script')+var script = scripts[scripts.length - 1]++window.garden = new GardenClient({+  name: 'garden',+  el: document.getElementById('comic'),+  width: 740,+  height: 462,+  title: script.getAttribute('data-title'),+  endpoint: script.getAttribute('data-endpoint'),+  imgPrefix: script.getAttribute('data-image-endpoint'),+  spread: {+    reload: 60,+  },+  debug: location.search === '?debug',+}).run()++window.addEventListener('keydown', function preventBackNav(ev) {+  // prevent backspace from navigating+  if (ev.which === 8) {+    ev.preventDefault()+  }+}, false)

@@ -0,0 +1,166 @@+#comic {+  position: relative;+  display: inline-block;+  outline: 2px solid black;+  overflow: hidden;+  user-select: none;++  .frame {+    background: white;+    transition: background-color .5s ease;++    &:focus {+      outline: none;+    }++    .content {+      opacity: 1;+      transition: opacity .5s ease;+    }++    &.loading {+      background: white;++      .content {+        opacity: 0;+      }+    }+  }++  .spinner {+    position: absolute;+    left: 50%;+    top: 45%;+    width: 50px;+    height: 52px;+    margin-left: -30px;+    margin-top: -26px;+    background-image: url('../../art/loading.png');+    background-size: contain;++    animation-name: rotate;+    animation-iteration-count: infinite;+    animation-timing-function: linear;+    animation-duration: 2s;+    transform-origin: 56% 50%;+    @keyframes rotate {+      0% {+        transform: rotateY(0);+      }+      50% {+        transform: rotateY(360deg);+      }+      100% {+        transform: rotateY(0);+      }+    }+  }++  .spinner-text {+    font-size: 0;+    position: absolute;+    left: 50%;+    top: 53%;+    width: 91px;+    height: 17px;+    margin-left: -91px / 2;+    background-image: url('../../art/loading.gif');+    background-repeat: no-repeat;+  }++  .light {+    position: absolute;+    z-index: 200;++    .handle {+      position: absolute;+      transform: translate(-50%, -50%);++      &.position {+        width: 40px;+        height: 44px;+        background-image: url('../../art/light.png');+        background-size: contain;+      }++      &.rotate {+        width: 0;+        height: 0;+        background: transparent;+        border-left: 10px solid transparent;+        border-right: 10px solid transparent;+        border-top: 10px solid red;+      }++      &.color {+        width: 8px;+        height: 8px;+        background: black;+        border: 2px solid black;+        border-radius: 100%;+      }+    }++    &.selected:before {+      content: '';+      display: block;+      position: absolute;+      left: -40px;+      right: -40px;+      top: -40px;+      bottom: -40px;+      border: 2px solid red;+      border-radius: 100%;+      opacity: .75;+    }+  }++  .tools {+    position: absolute;+    right: 0;+    z-index: 100;++    button {+      display: block;+      width: 40px;+      height: 40px;+      padding: 0;+      margin: 10px;+      box-sizing: content-box;+      font-size: 0;+      color: transparent;+      background: #ddd;+      background-size: contain;+      border: 1px solid #333;+      border-radius: 3px;+      transition: opacity .15s ease;+      opacity: .75;++      &:hover {+        opacity: 1;+      }++      &:disabled {+        opacity: .25;+      }++      &.add-light {+        background-image: url('../../art/add-light.png');+      }++      &.remove {+        background-color: #d22;+        background-image: url('../../art/remove.png');++        &:disabled {+          background-color: #777;+        }+      }+    }+  }++  #data {+    width: 100%;+    height: 10em;+  }+}

@@ -0,0 +1,19 @@+var clamp = require('clamp')++module.exports = function randomWind(linden) {+  var gust = 0+  var angle = 90++  function updateWind() {+    var jitter = 2 * (Math.random() - 0.5)+    if (Math.random() > 0.9) {+      gust += Math.random() - 0.5+    }+    angle = clamp(60, angle + 2 * (Math.random() - 0.5), 120)+    gust *= 0.995+    linden.addWind(angle, 0.025 * jitter + 0.25 * gust, 0.5)+  }++  linden.opts.beforeStep = updateWind  // eslint-disable-line no-param-reassign+  updateWind()+}

@@ -0,0 +1,12 @@+module.exports = function walk(obj, visit) {+  if (!obj) {+    return+  }++  function descend() {+    for (var i = 0; i < obj.children.length; i++) {+      walk(obj.children[i], visit)+    }+  }+  visit(obj.node, descend)+}

@@ -0,0 +1,35 @@+var path = require('path')+var webpack = require('webpack')++module.exports = {+  entry: {+    linden: './src/index.js',+  },++  output: {+    filename: '[name].js',+    path: path.join(__dirname, 'build'),+  },++  module: {+    loaders: [+      {+        test: /\.js$/,+        exclude: /node_modules/,+        loader: 'babel',+      },+      {+        test: /\.less$/,+        loaders: ['style', 'css', 'autoprefixer', 'less'],+      },+      {+        test: /\.png$|\.gif$/,+        loader: 'url',+      },+    ],+  },++  plugins: [+    new webpack.BannerPlugin('linden by chromako.de'),+  ],+}

@@ -0,0 +1,142 @@+#!/usr/bin/python+from __future__ import print_function+import sys+import gc+import glob, os+import shutil+import hashlib+import json++from PIL import Image++mirror_names = glob.glob("tiff/*-m.tif")+for m in mirror_names:+    im = Image.open(m)+    im_mirrored = im.transpose(Image.FLIP_LEFT_RIGHT)+    im.save(m.replace("-m.tif", "-l.tif"))+    im_mirrored.save(m.replace("-m.tif", "-r.tif"))++FROM_DPI = 1200+TO_DPI_2X = 2 * 80+RATIO_2X = float(TO_DPI_2X) / float(FROM_DPI)+RATIO_1X = RATIO_2X / 2++def print_status(*args):+    print(*args, end=" ")+    sys.stdout.flush()++def pixIn(b, p):+    g = 4+    return (((b['x1']-g) < p[0]) and ((b['x2']+g) > p[0]) and ((b['y1']-g) < p[1]) and ((b['y2']+g) > p[1]))++def boxCenter(b):+    return { "x": (b['x1']+b['x2'])/2+           , "y": ((b['y1']+b['y2'])/2)-1 }++def boxAdd(b, cx, cy):+    if b:+        b['x1'] = min(b['x1'], cx)+        b['x2'] = max(b['x2'], cx)+        b['y1'] = min(b['y1'], cy)+        b['y2'] = max(b['y2'], cy)+    else:+        b = {'x1': cx, 'x2': cx, 'y1':cy, 'y2': cy}+    return b++def floodFill(im, pix, color, cx, cy, to_color=(0, 0, 0)):+    global b+    b = None++    global queue+    queue = [(cx, cy)]++    def visit((px, py)):+        global b+        global queue++        try:+            p = pix[px, py][:3]+        except IndexError:+            return++        if p == color:+            b = boxAdd(b, px, im.size[1] - py)+            pix[px, py] = to_color+            queue.append((px + 1, py))+            queue.append((px - 1, py))+            queue.append((px, py + 1))+            queue.append((px, py - 1))++    while queue:+        visit(queue.pop(0))++    return b and boxCenter(b)++if not os.path.exists("assets"):+    os.makedirs("assets")++art_names = glob.glob("tiff/*.tif")++sources_seen = 0+print("")+print_status("| generating...")+for in_name in art_names:+    sources_seen += 1+    print_status(": [{} of {}]".format(sources_seen, len(art_names)), in_name, "|")+    print_status("h")+    with open(in_name, "r") as im_data:+        im_hash = hashlib.sha1(im_data.read()).hexdigest()[:16]+    print_status("l")+    im = Image.open(in_name)+    grip_name = os.path.join("assets", "{}.json".format(im_hash))+    if os.path.exists(grip_name):+        print_status("=")+    else:+        print_status("g")+        root = []+        attach = []+        pix = im.load()+        for cx in range(im.size[0]):+            for cy in range(im.size[1]):+                p = pix[cx, cy][:3]+                if p == (255, 255, 0) or p == (0, 0, 255): # root+                    to_color = (255, 255, 255, 0) if p[2] == 255 else (0, 0, 0, 255)+                    root.append(floodFill(im, pix, p, cx, cy, to_color))+                    print_status("a")+                elif p == (255, 0, 0) or p == (0, 255, 0): # attach+                    to_color = (255, 255, 255, 0) if p[1] == 255 else (0, 0, 0, 255)+                    attach.append(floodFill(im, pix, p, cx, cy, to_color))+                    print_status("r")++        # scale points to 1x pixel density+        for points in (root, attach):+            for point in points:+                point["x"] = int(point["x"] * RATIO_1X)+                point["y"] = int(point["y"] * RATIO_1X)++        with open(grip_name, "w") as f:+            json.dump({"attach": attach, "root": root and root[0]}, f)++        fname = os.path.basename(in_name)+        fbarename = os.path.splitext(fname)[0]++        for ratio, prefix in ((RATIO_1X, ''), (RATIO_2X, '2x-')):+            resized_name = os.path.join("assets", "{}{}.png".format(prefix, fbarename))+            print_status("r")+            im_resized = im.resize((int(im.size[0] * ratio), int(im.size[1] * ratio)), Image.ANTIALIAS)++            im_resized = im_resized.convert('RGBA')+            pix_resized = im_resized.load()+            # convert white to alpha+            for cx in range(im_resized.size[0]):+                for cy in range(im_resized.size[1]):+                    p = pix_resized[cx, cy]+                    pix_resized[cx, cy] = (0, 0, 0, 255 - (sum(p[:3]) / 3))++            print_status("w")+            if im_resized.info.has_key("icc_profile"):+                del im_resized.info["icc_profile"]+            im_resized.save(resized_name, "PNG", optimize=True)++    print(".")+

@@ -0,0 +1,87 @@+name:                linden+version:             0+synopsis:            Zen gardening, based on l-systems+description:         A system for defining and running interactive l-systems over the web.+homepage:            http://xkcd.com/1663/+license:             BSD3+license-file:        LICENSE+author:              davean+maintainer:          davean@xkcd.com+copyright:           davean 2016+category:            Web+build-type:          Simple+cabal-version:       >=1.10++data-files:+  art/*.png+  art/*.svg+  client/package.json+  client/webpack.config.js+  client/build/index.html+  client/build/linden.js+  client/src/*.js+  client/src/*.less+  tiff/*.tif+  extract_grips.py+  assets/*.png+  assets/*.json++source-repository head+  type: git+  location: https://code.xkrd.net/xkcd/linden.git++library+  hs-source-dirs:      src+  default-language:    Haskell2010+  exposed-modules:+          Linden.TH+        , Linden.Types+        , Linden.RuleDSL+        , Linden.Store.Memory+        , Linden.Store.Redis+        , Linden.Server+  build-depends:+                base >=4.9 && <4.11+              , bifunctors >= 5.4 && < 5.5+              , deepseq >= 1.4 && < 1.5+              , containers >= 0.5 && < 0.6+              , rosezipper >= 0.2 && < 0.3+              , random-fu >= 0.2.6.2+              , aeson >= 1.2 && < 1.3+              , mtl >= 2.2 && < 2.3+              , monad-supply == 0.6.*+              , bytestring >= 0.10 && < 0.11+              , text >= 1.2 && < 1.3+              , wai >= 3.2 && < 3.3+              , http-types >= 0.9 && < 0.10+              , wai-extra >= 3.0 && < 3.1+              , wai-app-static >= 3.1 && < 3.2+              , wai-cors >= 0.2 && < 0.3+              , delay >= 0 && < 0.1+              , time >= 1.7 && < 1.9+              , filepath >= 1.4 && < 1.5+              , SHA >= 1.6 && < 1.7+              , uuid >= 1.3 && < 1.4+              , unordered-containers >= 0.2 && < 0.3+              , lens >= 4.15 && < 4.16+              , exceptions >= 0.8 && < 0.9+              , hashable >= 1.2 && < 1.3+              , hedis >= 0.9 && < 0.10+              , zlib >= 0.6 && < 0.7++executable linden-example+  default-language:    Haskell2010+  ghc-options: -rtsopts -threaded+  main-is: Linden.hs+  other-modules: Paths_linden+  build-depends:+                base >=4.9 && <4.11+              , linden+              , containers+              , rosezipper+              , mtl+              , random-fu+              , warp >= 3.2 && < 3.3+              , uuid+              , hashable+              , text

@@ -0,0 +1,261 @@+{-# LANGUAGE OverloadedStrings, DeriveGeneric #-}+module Linden.RuleDSL (+   RuleContext(..), RuleDSL, compileRules+ , addOption+ , doNothing, deleteMe, addBranch, addBranches+ , alreadyExists, noDup, nodeCount, maxNodes+ , curBranch, gaiaPathSyms, angleSum, angleToVertical+ , distance, distanceSq, curChildren+ , lightCones, lightHits, lightAng, lightIntensity+ , colorTemp+ , materialChildrenSyms, directSiblings+ , weighted, readBranchSym, attachLocation, allLights+ -- To suppress warnings about constructors used for TH naming+ , pX, pY, gRoot, gAttach+ , Point(..), Grips(..)+ ) where++import Data.Char+import Data.Maybe+import Data.Tree+import Data.Tree.Zipper+import Data.Bifunctor+import Data.Biapplicative+import Data.Random.RVar+import Data.Random.Distribution.Categorical+import Control.Monad.Identity+import Control.Monad.Reader+import Control.Monad.Writer.Strict+import Control.Monad.Supply (MonadSupply(..))+import qualified Data.ByteString as BS+import qualified Data.ByteString.Lazy as BSL+import Data.Aeson ((.:))+import qualified Data.Aeson as JS+import qualified Data.Text as T+import GHC.Generics+import System.FilePath+import Data.Digest.Pure.SHA (sha1, showDigest)+import qualified Data.Map.Lazy as Map+import Data.Hashable (hash)++import Debug.Trace++import Linden.Types++data Point =+    Point { pX :: Int, pY :: Int }+  deriving (Read, Show, Eq, Ord, Generic)++instance JS.ToJSON Point where+  toJSON (Point x y) = JS.object [("x", JS.toJSON x), ("y", JS.toJSON y)]++instance JS.FromJSON Point where+  parseJSON (JS.Object o) =+    Point <$> o .: "x" <*> o .: "y"+  parseJSON _ = mzero++data Grips =+  Grips {+    gRoot :: Point+  , gAttach :: [Point]+  }+  deriving (Read, Show, Eq, Ord, Generic)++instance JS.ToJSON Grips where+  toJSON (Grips r a) = JS.object [("attach", JS.toJSON a), ("root", JS.toJSON r)]++instance JS.FromJSON Grips where+  parseJSON (JS.Object o) =+    Grips <$> o .: "root" <*> o .: "attach"+  parseJSON _ = mzero++unPoint :: Point -> (Int, Int)+unPoint (Point x y) = (x, y)++readBranchSym :: [Int] -> FilePath -> ReaderT FilePath IO BranchSym+readBranchSym = readBranchSym'++readBranchSym' :: [Int] -> FilePath -> ReaderT FilePath IO BranchSym+readBranchSym' cls fp = do+  bp <- ask+  imfl <- liftIO $ BSL.readFile (bp </> "tiff" </> (addExtension fp "tif"))+  let imhash = take 16 . showDigest . sha1 $ imfl+  let gfl = bp </> "assets" </> (take 16 imhash++".json")+  gjson <- liftIO $ BS.readFile gfl+  case JS.eitherDecodeStrict' gjson of+    Left err -> fail $ "Failed to parse json of "++fp++" because "++show err+    Right (Grips (Point rX rY) as) ->+        return $ BranchSym (Just . T.pack $ addExtension fp "png")+                           (rX, rY) (map unPoint as) False False (map hash cls)++weighted :: [(Double, LEnv EditCommand)] -> RVar (LEnv EditCommand)+weighted = weightedCategorical++data RuleContext =+    RC {+      rcLights :: [Light]+    , rcAttachLocs :: BranchPossition+    , rcTreePos :: TreePos Full Branch+    }+  deriving (Read, Show, Eq)++type RuleDSL a = ReaderT RuleContext (WriterT [(Double, LEnv EditCommand)] RVar) a++compileRules :: RuleDSL () -> Rule+compileRules act bps lights tp =+    weighted =<< (execWriterT . runReaderT act $ RC lights bps tp)++curBranch :: RuleDSL Branch+curBranch = label <$> asks rcTreePos++curChildren :: RuleDSL Int+curChildren = (length . offspring) <$> asks rcTreePos++directSiblings :: RuleDSL Int+directSiblings =+  (fromMaybe 0 . fmap ((1-) . length . subForest . tree) . parent) <$> asks rcTreePos++-- | Finds if a command adds an edge that already exists.+alreadyExists :: LEnv EditCommand -> RuleDSL Bool+alreadyExists mc = do+  let c = runLEnv mc (Supply 0) -- We're an ID-independant comparison.+  case fst c of+    DeleteMe -> return False+    DoNothing -> return False+    AddChildren nsf -> do+      esf <- offspring <$> asks rcTreePos+      return . or $ [ ((bAngle nc) == (bAngle ec)) && ((bImg nc) == (bImg ec))+                    | nc <- rootLabel <$> nsf, ec <- fmap label esf]++nodeCount :: RuleDSL Int+nodeCount = (length . flatten . toTree) <$> asks rcTreePos++maxNodes :: Int -> RuleDSL () -> RuleDSL ()+maxNodes mx act = do+  nc <- nodeCount+  case nc of+    l | l >= mx -> doNothing 1+    _ -> act++isMaterial :: RuleDSL Bool+isMaterial = (not . isJust . bProxyFor . label) <$> asks rcTreePos++materialChildrenSyms :: RuleDSL [Branch]+materialChildrenSyms = do+    tp <- asks rcTreePos+    im <- isMaterial+    case im of+      -- We're material, so only our children can be immaterial.+      True -> return $ searchDown . tree $ tp+      False -> return $ maybe [] searchDown . findMaterial $ tp+  where+    findMaterial :: TreePos Full Branch -> Maybe (Tree Branch)+    findMaterial tp =+      case parent tp of+        Nothing -> Nothing+        Just tp' | (isJust . bProxyFor . label $ tp') -> findMaterial tp'+        Just tp' -> Just . tree $ tp'+    searchDown :: Tree Branch -> [Branch]+    searchDown (Node b sf) =+      case isJust . bProxyFor $ b of+        True -> concatMap searchDown sf+        False -> [b]++noDup :: RuleDSL a -> RuleDSL a+noDup act = do+    rc <- ask+    (a, w) <- lift . lift . runWriterT . runReaderT act $ rc+    forM_ w $ \(weight, ec) -> do+      d <- alreadyExists ec+      unless d $ tell [(weight, ec)]+    return a++addOption :: Double -> LEnv EditCommand -> RuleDSL ()+addOption w ec = tell [(w, ec)]++doNothing :: Double -> RuleDSL ()+doNothing w = addOption w . return $ DoNothing++deleteMe :: Double -> RuleDSL ()+deleteMe w = do+  im <- (not . bImmutable) <$> curBranch+  when im $ addOption w . return $ DeleteMe++explodeSym :: BranchSym -> Angle -> Scale -> Double -> LEnv (Tree Branch)+explodeSym (BranchSym img r [attach] im rgd cls) a s wv = do+  i <- supply+  return $ Node (Branch i img r attach a s im rgd cls Nothing wv) []+explodeSym (BranchSym img r attachs im rgd cls) a s wv = do+  i <- supply+  sf <- forM attachs $ \at -> do+     i' <- supply+     return $ Node (Branch i' Nothing (0, 0) at 0 1 im True cls (Just i) 0) []+  return $ Node (Branch i img r (0, 0) a s im rgd cls Nothing wv) sf++addBranch :: Double -> BranchSym -> Angle -> Scale -> Double -> RuleDSL ()+addBranch w bs a s wv =+  addOption w ((AddChildren . pure) <$> explodeSym bs a s wv)++addBranches :: Double -> [(BranchSym, Angle, Scale, Double)] -> RuleDSL ()+addBranches w as = addOption w $ do+  cs <- forM as $ \(bs, a, s, wv) -> do+         explodeSym bs a s wv+  return . AddChildren $ cs++gaiaPathSyms :: RuleDSL [Branch]+gaiaPathSyms = (map (\(_, p, _) -> p) . parents) <$> asks rcTreePos++angleToVertical :: RuleDSL Angle+angleToVertical = negate <$> angleSum++angleSum :: RuleDSL Angle+angleSum = (absAngle . sum . map bAngle) <$> gaiaPathSyms++absAngle :: Angle -> Angle+absAngle d = d + (fromIntegral $ (ceiling ((negate d) / 360.0)::Integer)) * 360.0++lightAng :: (X, Y) -> Light -> Angle+lightAng p l =+  let (dx, dy) = ((-), (-)) <<*>> p <<*>> (bimap fromIntegral fromIntegral $ lPos l)+  in absAngle $ (180/pi) * atan2 dy dx++lightHits :: (X, Y) -> Light -> Bool+lightHits p l =+    let ang = lightAng p l+    in (abs $ ang-(absAngle $ lPointAngle l)) <= (lBeamAngle l)/2++attachLocation :: RuleDSL (X, Y)+attachLocation =+    (fst . fromJust) <$> (Map.lookup <$> (bId <$> curBranch) <*> (asks rcAttachLocs))++allLights :: RuleDSL [Light]+allLights = asks rcLights++lightCones :: RuleDSL [Light]+lightCones = do+  p <- attachLocation+  filter (lightHits p) <$> asks rcLights++distance :: (X, Y) -> (Int, Int) -> Double+distance a b = sqrt . distanceSq a $ b++distanceSq :: (X, Y) -> (Int, Int) -> Double+distanceSq (x0, y0) (x1', y1') =+    ((x0-x1)^(2::Int))+((y0-y1)^(2::Int))+  where+    x1 = fromIntegral x1'+    y1 = fromIntegral y1'++colorTemp :: RuleDSL Double+colorTemp = do+  lcs <- lightCones+  return $ if (null lcs)+           then -10+           else (sum . map lTemp $ lcs) / (fromIntegral $ length lcs)++lightIntensity :: RuleDSL Double+lightIntensity = do+  p <- attachLocation+  hitting <- lightCones+  let intenses = map (\l -> (10^(4::Int))*(360/(lBeamAngle l)) / (distanceSq p (lPos l))) hitting+  return . sum $ 0:intenses

@@ -0,0 +1,152 @@+{-# LANGUAGE OverloadedStrings, ScopedTypeVariables #-}+module Linden.Server (+   lindenApp+ ) where++import Control.Applicative+import Control.Monad+import qualified Data.ByteString.Lazy as BSL+import qualified Data.ByteString.Lazy.Builder as BSLB+import qualified Data.Aeson as JS+import Data.Maybe+import Data.IORef+import Data.Char+import Data.Bits+import Data.Monoid+import Data.Function+import Data.List+import qualified Data.Text as T+import qualified Data.Text.Encoding as TE+import Data.Random+import Control.Time+import Data.Time+import Data.UUID (UUID)+import qualified Data.UUID as UUID+import qualified Data.UUID.V1 as V1+import qualified Data.Map as Map+import Data.Digest.Pure.SHA (sha512, showDigest)+import System.FilePath++import qualified Network.HTTP.Types.Method as HTTP+import qualified Network.HTTP.Types.Status as HTTP+import qualified Network.Wai as WAI+import Network.Wai.EventSource+import Network.Wai.Middleware.Gzip+import Network.Wai.Application.Static+import Network.Wai.Middleware.Rewrite+import Network.Wai.UrlMap+import Network.Wai.Middleware.Cors+import Network.Wai.Request (requestSizeCheck)++import Linden.Types++lindenApp :: FilePath -> GardenStore -> BSL.ByteString -> NominalDiffTime -> AxiomSource -> IO Rule -> IO T.Text -> WAI.Application+lindenApp bp (GardenStore gsave gcas _) sec upRate axiom iorule upRule =+    gzip def . simpleCors . rewritePure rr . mapUrls $+          mount "run" eventTree+      <|> mount "rule" reRule+      <|> mount "edit" treeEdit+      <|> mount "art" (staticApp $ defaultWebAppSettings (bp </> "assets"))+      <|> mountRoot (staticApp $ defaultWebAppSettings (bp </> "client/build"))+  where+    rr [] _ = ["index.html"]+    rr ts _ = ts++    genEditKey :: UUID -> String+    genEditKey u = showDigest . sha512 $ sec <> UUID.toByteString u++    editKeyCheck :: UUID -> String -> Bool+    editKeyCheck u k =+        (length gk == length k) && 0 == (foldl1 (.|.) . zipWith (xor `on` ord) k $ gk)+      where gk = genEditKey u++    upDiff :: DiffTime+    upDiff = realToFrac upRate++    keyAuth :: UUID -> String -> (WAI.Response -> IO WAI.ResponseReceived) -> IO WAI.ResponseReceived -> IO WAI.ResponseReceived+    keyAuth u k _ app | editKeyCheck u k = app+    keyAuth _ _ respond _ | otherwise =+      respond $ WAI.responseBuilder HTTP.status403 [] "Bad Edit Key"++    reRule :: WAI.Application+    reRule _ respond = do+      errs <- upRule+      respond $ WAI.responseLBS HTTP.status200 [] . BSL.fromStrict . TE.encodeUtf8 $ errs++    treeEdit :: WAI.Application+    treeEdit req respond | (WAI.requestMethod req == HTTP.methodPost) = do+      reqBody <- WAI.strictRequestBody =<< requestSizeCheck 1024 req+      case JS.eitherDecode' reqBody of+        Left err -> respond $ WAI.responseBuilder HTTP.status400 [] .+                   BSLB.byteString . TE.encodeUtf8 . T.pack $ err+        Right (UserDel gdn k tgt) -> keyAuth gdn k respond $ do+          now <- getCurrentTime+          void . gcas gdn $ \(LS i _ s0 ls (Just (PrettyJSTree t0))) -> do+            return ( Just . LS i now s0 (filter (\lt -> (lId lt) /=tgt) ls) .+                       fmap PrettyJSTree . filterTree (\b -> tgt /= (bId b)) $ t0+                   , ())+          respond $ WAI.responseBuilder HTTP.status200 [] "Ok"+        Right (UserEditLight gdn k ml loc p w c) -> keyAuth gdn k respond $ do+          now <- getCurrentTime+          nlight <- gcas gdn $ \(ls@(LS _ _ s lts _)) -> do+            let (tl, ol) = partition (\l' -> (Exists $ lId l')==ml) lts+            let (s', newLights) =+                    case (tl, ml, length ol < 3) of+                      ([_], Exists l, _) -> (s, [Light l loc p w c])+                      ([], IsNull, True) -> (s+1, [Light s loc p w c])+                      _ -> (s, [])+            let allLights = newLights++ol+            return ( Just $ ls { lsSupply = s'+                               , lsLastUpdate = now+                               , lsLights = allLights }+                     , Just allLights)+          respond $ WAI.responseBuilder HTTP.status200 [] .+                  BSLB.lazyByteString . JS.encode $ nlight+    treeEdit _ respond =+        respond $ WAI.responseLBS HTTP.status405 [] "Bad method"++    eventSendGarden :: Maybe LState -> IO ServerEvent+    eventSendGarden mns = return $+      case mns of+        Nothing -> CloseEvent+        Just ns ->+          ServerEvent (Just "linden") Nothing .+          pure . BSLB.lazyByteString . JS.encode $ ns++    eventTree :: WAI.Application+    eventTree req respond = do+      (u, ek) <- case join . fmap UUID.fromText . listToMaybe . WAI.pathInfo $ req of+           Nothing -> do+             Just uuid <- V1.nextUUID+             now <- getCurrentTime+             ax <- runRVar (axiom uuid now) StdRandom+             gsave ax+             return (uuid, Left $ genEditKey uuid)+           Just u' -> return (u', Right False)+      stepR <- newIORef ek+      eventSourceAppIO (do+        stp <- readIORef stepR+        case stp of+          Left k -> do+            writeIORef stepR (Right False)+            return . ServerEvent (Just "linden-key") Nothing .+              pure . BSLB.lazyByteString . JS.encode . Map.fromList $+                [ ("garden", UUID.toText u)+                , ("key"::T.Text, T.pack k) ]+          Right False -> do+            writeIORef stepR (Right True)+            mns <- gcas u (\ls -> return (Nothing, ls))+            eventSendGarden mns+          _ -> do+            delay upDiff+            now <- getCurrentTime+            rule <- iorule+            mns <- gcas u (\ls ->+                    -- make sure we only update if its been long enough.+                    case (now `diffUTCTime` (lsLastUpdate ls)) <= upRate of+                      True -> return (Nothing, ls)+                      False -> do+                        upped <- step rule now ls+                        return (Just upped, upped))+            eventSendGarden mns) req respond+

@@ -0,0 +1,37 @@+{-# LANGUAGE ScopedTypeVariables, ImpredicativeTypes, RankNTypes #-}+module Linden.Store.Memory (+   memStore+ ) where++import Data.UUID (UUID)+import Data.Random+import Control.Concurrent.MVar+import Data.HashMap.Strict (HashMap)+import qualified Data.HashMap.Strict as HMap++import Linden.Types++memStore :: IO GardenStore+memStore = do+    ms <- newMVar HMap.empty+    return $ GardenStore (memSave ms) (memCAS ms) (memExists ms)+  where+    memSave :: MVar (HashMap UUID (MVar LState)) -> GardenSave+    memSave ms lcs = do+      nmv <- newMVar lcs+      modifyMVar_ ms (return . HMap.insert (lsGarden lcs) nmv)++    memCAS :: MVar (HashMap UUID (MVar LState)) -> GardenCAS+    memCAS ms = \u mut -> do+      mm <- (HMap.lookup u) <$> readMVar ms+      case mm of+        Nothing -> return Nothing+        Just m -> modifyMVar m $ \lcs -> do+          (mlcs', a) <- runRVar (mut lcs) StdRandom+          case mlcs' of+            Nothing -> return (lcs, Just a)+            Just lcs' -> return (lcs', Just a)++    memExists :: MVar (HashMap UUID (MVar LState)) -> GardenExists+    memExists ms u =+      (maybe False (const True) . HMap.lookup u) <$> takeMVar ms

@@ -0,0 +1,75 @@+{-# LANGUAGE OverloadedStrings, RankNTypes, ScopedTypeVariables #-}+module Linden.Store.Redis (+   rStore+ ) where++import Control.Monad+import Control.Monad.Trans+import qualified Data.UUID as UUID+import qualified Data.Aeson as JS+import qualified Control.Monad.Catch as E+import qualified Control.Exception.Base as BE+import qualified Data.ByteString.Lazy as BSL+import Data.Random+import Control.Time+import Data.Time+import Database.Redis+import Codec.Compression.Zlib (compress, decompress)++import Linden.Types++backOff :: forall a. IO (Maybe a) -> IO (Maybe a)+backOff act =+    go 0+  where+    go :: Int -> IO (Maybe a)+    go 5 = return Nothing+    go e = E.handle (\(ex::E.SomeException) -> print ex >> delay (secondsToDiffTime $ 2^e) >> act) act++rStore :: Bool -> ConnectInfo -> IO GardenStore+rStore debug cinfo = do+    conn <- connect cinfo+    return $ GardenStore (rSave conn) (rCAS conn) undefined+  where+    rSave :: Connection -> GardenSave+    rSave conn lcs = runRedis conn $ do+      let ubs = UUID.toASCIIBytes . lsGarden $ lcs+      let bdy = BSL.toStrict . compress . JS.encode $ lcs+      void $ set ubs bdy++    rCAS :: Connection -> GardenCAS+    rCAS conn = \u mut -> backOff . runRedis conn $ do+      when debug . liftIO . putStrLn $ "CASing "++show u+      let ubs = UUID.toASCIIBytes u+      watch [ubs]+      eo <- get ubs+      case fmap (join . fmap (JS.decode' . decompress . BSL.fromStrict)) eo of+        Left err -> do+          liftIO . putStrLn $ " - "++show u ++ " got error: "++show err+          return Nothing+        Right Nothing -> do+          liftIO . putStrLn $ " - "++show u ++ " was not pressent or didn't decode!"+          return Nothing+        Right (Just g) -> do+          when debug . liftIO . putStrLn $ " - "++show u ++ " downloaded"          +          (mg', a) <- liftIO $ runRVar (mut g) StdRandom+          case mg' of+            Nothing -> do+              when debug . liftIO . putStrLn $ " - "++show u ++ " no action."+              return $ Just a+            Just g' | g' == g -> do+              when debug . liftIO . putStrLn $ " - "++show u ++ " updated but same"+              return $ Just a+            Just g' -> do+              when debug . liftIO . putStrLn $ " - "++show u ++ " updated"+              let bdy = BSL.toStrict . compress . JS.encode $ g'+              txRes <- multiExec $ do+                (fmap (const ())) <$> set ubs bdy+              case txRes of+                TxSuccess _ -> do+                  when debug . liftIO . putStrLn $ " - "++show u ++ " CAS"+                  return $ Just a+                TxAborted -> liftIO . E.throwM . BE.AssertionFailed $ "Raced"+                TxError err ->+                  -- liftIO . putStrLn $ " - Error on multi: "++err+                  liftIO . E.throwM . BE.AssertionFailed $ "retry"

@@ -0,0 +1,8 @@+module Linden.TH (+   makeCamel+ ) where++import Data.Char++makeCamel :: Int -> String -> String+makeCamel d = (\l -> (toLower . head $ l):(tail l))  . drop d

@@ -0,0 +1,255 @@+{-# LANGUAGE OverloadedStrings, DeriveGeneric, DeriveFunctor, DeriveAnyClass, TemplateHaskell, RankNTypes, FlexibleInstances, MultiParamTypeClasses, ScopedTypeVariables, ImpredicativeTypes #-}+module Linden.Types (+   BranchSym(..), Branch(..), X, Y, Angle, Scale+ , offspring+ , LState(..), Light(..), BranchPossition+ , step, EditCommand(..)+ , LEnvT, LEnv, runLEnvT, runLEnv, Supply(..)+ , Rule, AxiomSource+ , PrettyJSTree(..)+ , GardenStore(..), GardenSave, GardenCAS, GardenExists+ , UserCommand(..)+ , filterTree+ , Nullable(..)+ , makePossitions+ ) where++import GHC.Generics+import qualified Data.Text as T+import qualified Data.Aeson as JS+import Data.Aeson.TH+import Data.Bifunctor+import Data.Biapplicative+import Data.Word+import Data.Tree+import Data.Maybe+import Data.Time+import Data.UUID (UUID)+import Data.Tree.Zipper+import Data.Random.RVar+import Control.Monad.Identity+import Control.Monad.State.Lazy+import Control.Monad.Supply (MonadSupply(..))+import qualified Data.Map.Lazy as Map+import Control.DeepSeq++import Linden.TH++data BranchSym =+  BranchSym {+      bsImg :: Maybe T.Text+    , bsRoot :: !(Int, Int)+    , bsAttach :: ![(Int, Int)]+    , bsImmutable :: !Bool+    , bsRigid :: !Bool+    , bsClasses :: ![Int]+    }+  deriving (Read, Show, Eq, Ord, Generic, NFData)++type Angle = Double+type Scale = Double++data Branch =+  Branch {+      bId :: {-# UNPACK #-} !Word32+    , bImg :: Maybe T.Text+    , bRoot :: !(Int, Int)+    , bAttach :: !(Int, Int)+    , bAngle :: {-# UNPACK #-} !Angle+    , bScale ::  {-# UNPACK #-}!Scale+    , bImmutable :: !Bool+    , bRigid :: !Bool+    , bClass :: ![Int]+    , bProxyFor :: Maybe Word32+    , bWaviness :: {-# UNPACK #-}!Double+    }+  deriving (Read, Show, Eq, Ord, Generic, NFData)++$(deriveJSON defaultOptions{fieldLabelModifier = makeCamel 1} ''Branch)++data Light =+    Light {+      lId ::  {-# UNPACK #-}!Word32+    , lPos :: !(Int, Int)+    , lPointAngle ::  {-# UNPACK #-}!Angle+    , lBeamAngle ::  {-# UNPACK #-}!Angle+    , lTemp :: {-# UNPACK #-}!Double+    }+  deriving (Read, Show, Eq, Ord, Generic, NFData)++$(deriveJSON defaultOptions{fieldLabelModifier = makeCamel 1} ''Light)++newtype PrettyJSTree a =+    PrettyJSTree (Tree a)+  deriving (Read, Show, Eq, Generic, NFData)++instance JS.ToJSON a => JS.ToJSON (PrettyJSTree a) where+    toJSON (PrettyJSTree (Node a c)) =+        JS.object [ ("node", JS.toJSON a)+                  , ("children", JS.toJSON . map PrettyJSTree $ c)]++instance JS.FromJSON a => JS.FromJSON (PrettyJSTree a) where+    parseJSON (JS.Object v) = do+      n <- v JS..: "node"+      c <- v JS..: "children"+      return . PrettyJSTree . Node n . map (\(PrettyJSTree t) -> t) $ c+    parseJSON _ = mzero++data LState =+  LS {+    lsGarden :: {-# UNPACK #-} !UUID+  , lsLastUpdate :: {-# UNPACK #-} !UTCTime+  , lsSupply ::  {-# UNPACK #-}!Word32+  , lsLights :: ![Light]+  , lsTree :: Maybe (PrettyJSTree Branch)+  }+  deriving (Read, Show, Eq, Generic, NFData)++$(deriveJSON defaultOptions{fieldLabelModifier = makeCamel 2} ''LState)++type GardenSave = LState -> IO ()+-- Returns Nothing if the UUID doesn't exist in the store.+-- Action returns Nothing if there is no update.+type GardenCAS = forall a. UUID -> (LState -> RVar (Maybe LState, a)) -> IO (Maybe a)+type GardenExists = UUID -> IO Bool++data GardenStore =+    GardenStore GardenSave GardenCAS GardenExists++data Nullable a =+    IsNull+  | Exists a+  deriving (Read, Show, Eq, Ord, Generic, NFData)++instance JS.ToJSON a => JS.ToJSON (Nullable a) where+    toJSON (Exists a) = JS.toJSON a+    toJSON IsNull = JS.Null++instance JS.FromJSON a => JS.FromJSON (Nullable a) where+    parseJSON JS.Null = return IsNull+    parseJSON v = Exists <$> JS.parseJSON v++data UserCommand =+    UserDel { ucGarden :: UUID, ucEditKey :: String, ugNode :: Word32 }+  | UserEditLight { ucGarden :: UUID, ucEditKey :: String+                  , ucLight :: Nullable Word32, ucPos :: (Int, Int)+                  , ucPointAngle :: Angle, ucBeamAngle :: Angle+                  , ucTemp :: Double }+  deriving (Read, Show, Eq, Ord, Generic, NFData)++$(deriveJSON defaultOptions {+                   fieldLabelModifier = makeCamel 2+                 , constructorTagModifier = drop 4} ''UserCommand)++filterTree :: (Branch -> Bool) -> Tree Branch -> Maybe (Tree Branch)+filterTree f (Node b sf) =+    if f b+    then Just (Node b (mapMaybe (filterTree f) sf))+    else Nothing++data EditCommand = DoNothing | AddChildren [Tree Branch] | DeleteMe++newtype Supply = Supply Word32++type X = Double+type Y = Double++newtype LEnvT m a =+    LEnvT { runLEnvT :: Supply -> m (a, Supply) }++type LEnv = LEnvT Identity++runLEnv :: LEnv a -> Supply -> (a, Supply)+runLEnv a = runIdentity . runLEnvT a++instance (Functor m) => Functor (LEnvT m) where+    fmap f m = LEnvT $ \s ->+               fmap (\ ~(a, s') -> (f a, s')) $ runLEnvT m s++instance (Functor m, Monad m) => Applicative (LEnvT m) where+    pure a = LEnvT $ \s -> return (a, s)+    LEnvT mf <*> LEnvT mx = LEnvT $ \s -> do+        ~(f, s') <- mf s+        ~(x, s'') <- mx s'+        return (f x, s'')+    {-# INLINE (<*>) #-}++instance (Monad m) => Monad (LEnvT m) where+    m >>= k  = LEnvT $ \s -> do+        ~(a, s') <- runLEnvT m s+        runLEnvT (k a) s'+    fail str = LEnvT $ \_ -> fail str++instance (Monad m) => MonadState Supply (LEnvT m) where+    state f = LEnvT (return . f)++instance MonadTrans LEnvT where+    lift m = LEnvT $ \s -> do+               a <- m+               return (a, s)++instance Monad m => MonadSupply Word32 (LEnvT m) where+    supply = state (\(Supply s) -> (s, Supply $ s+1))+    peek = (\(Supply s) -> s) <$> get+    exhausted = (\(Supply s) -> s == maxBound) <$> get++type BranchPossition = Map.Map Word32 ((X, Y), Angle)++makePossitions :: Tree Branch -> BranchPossition+makePossitions (Node b' sf') =+    go (Map.singleton (bId b') (attachOffset b', bAngle b')) (bId b') sf'+  where+    doublefy :: (Int, Int) -> (Double, Double)+    doublefy = bimap fromIntegral fromIntegral+    attachOffset :: Branch -> (X, Y)+    attachOffset b =+        ((-), (-)) <<*>> (doublefy $ bAttach b) <<*>> (doublefy $ bRoot b)+    go :: BranchPossition -> Word32 -> Forest Branch -> BranchPossition+    go memo pid cl = foldl (addChild pid) memo cl+    addChild :: Word32 -> BranchPossition -> Tree Branch -> BranchPossition+    addChild pid memo (Node c sf) =+      go (Map.insert (bId c) (attachPos pid memo c) memo) (bId c) sf+    attachPos :: Word32 -> BranchPossition -> Branch -> ((X, Y), Angle)+    attachPos pid memo c =+      let ((parX, parY), pAng) = memo Map.! pid+          ang = pAng + (bAngle c)+          (offX, offY) = attachOffset c+          (xosq, yosq) = ((^(2::Int)), (^(2::Int))) <<*>> attachOffset c+          cLen = (bScale c) * sqrt(xosq+yosq)+          rang = ang*(pi/180) + atan2 offY offX+          cX = cLen*(cos rang)+          cY = cLen*(sin rang)+      in ((parX+cX, parY+cY), ang)++type Rule = BranchPossition -> [Light] -> TreePos Full Branch -> RVar (LEnv EditCommand)++-- Axiom generator+type AxiomSource = UUID -> UTCTime -> RVar LState++offspring :: TreePos Full Branch -> [TreePos Full Branch]+offspring tp =+    go . children $ tp+  where+    go :: TreePos Empty Branch -> [TreePos Full Branch]+    go cf =+      case nextTree cf of+        Nothing -> []+        Just c -> c:(go . nextSpace $ c)++step :: Rule -> UTCTime -> LState -> RVar LState+step _ _ l@(LS _ _ _ _ Nothing) = return l+step rule n (LS i _ s0 lights (Just (PrettyJSTree t0))) =+    fmap (\(t1, Supply s1) -> force $ LS i n s1 lights . fmap PrettyJSTree $ t1) .+    (`runLEnvT` (Supply s0)) . applyProductions .+    fromTree $ (t0::Tree Branch)+  where+    bps = makePossitions t0+    applyProductions :: TreePos Full Branch -> LEnvT RVar (Maybe (Tree Branch))+    applyProductions tp = do+      let sym = label tp+      cuped <- fmap catMaybes . forM (offspring tp) $ \c -> applyProductions c+      com <- (lift . rule bps lights $ tp) >>= (\a -> state (runLEnv a))+      case com of+        DoNothing -> return . Just $ Node sym cuped+        AddChildren ts -> return . Just $ Node sym (ts++cuped)+        DeleteMe -> return Nothing

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