TikiTDO · June 15, 2016 17:15
diff --git a/gps_to_words.js b/gps_to_words.js
 (function () {
  var words = ["the", "of", "and", "to", "a", "in", "for", "is", "on", "that", "by", "this", "with", "i", "you", "it", "not", "or", "be", "are", "from", "at", "as", "your", "all", "have", "new", "more", "an", "was", "we", "will", "home", "can", "us", "about", "if", "page", "my", "has", "search", "free", "but", "our", "one", "other", "do", "no", "information", "time", "they", "site", "he", "up", "may", "what", "which", "their", "news", "out", "use", "any", "there", "see", "only", "so", "his", "when", "contact", "here", "business", "who", "web", "also", "now", "help", "get", "pm", "view", "online", "c", "e", "first", "am", "been", "would", "how", "were", "me", "s", "services", "some", "these", "click", "its", "like", "service", "x", "than", "find", "price", "date", "back", "top", "people", "had", "list", "name", "just", "over", "state", "year", "day", "into", "email", "two", "health", "n", "world", "re", "next", "used", "go", "b", "work", "last", "most", "products", "music", "buy", "data", "make", "them", "should", "product", "system", "post", "her", "city", "t", "add", "policy", "number", "such", "please", "available", "copyright", "support", "message", "after", "best", "software", "then", "jan", "good", "video", "well", "d", "where", "info", "rights", "public", "books", "high", "school", "through", "m", "each", "links", "she", "review", "years", "order", "very", "privacy", "book", "items", "company", "r", "read", "group", "sex", "need", "many", "user", "said", "de", "does", "set", "under", "general", "research", "university", "january", "mail", "full", "map", "reviews", "program", "life", "know", "games", "way", "days", "management", "p", "part", "could", "great", "united", "hotel", "real", "f", "item", "international", "center", "ebay", "must", "store", "travel", "comments", "made", "development", "report", "off", "member", "details", "line", "terms", "before", "hotels", "did", "send", "right", "type", "because", "local", "those", "using", "results", "office", "education", "national", "car", "design", "take", "posted", "internet", "address", "community", "within", "states", "area", "want", "phone", "dvd", "shipping", "reserved", "subject", "between", "forum", "family", "l", "long", "based", "w", "code", "show", "o", "even", "black", "check", "special", "prices", "website", "index", "being", "women", "much", "sign", "file", "link", "open", "today", "technology", "south", "case", "project", "same", "pages", "uk", "version", "section", "own", "found", "sports", "house", "related", "security", "both", "g", "county", "american", "photo", "game", "members", "power", "while", "care", "network", "down", "computer", "systems", "three", "total", "place", "end", "following", "download", "h", "him", "without", "per", "access", "think", "north", "resources", "current", "posts", "big", "media", "law", "control", "water", "history", "pictures", "size", "art", "personal", "since", "including", "guide", "shop", "directory", "board", "location", "change", "white", "text", "small", "rating", "rate", "government", "children", "during", "usa", "return", "students", "v", "shopping", "account", "times", "sites", "level", "digital", "profile", "previous", "form", "events", "love", "old", "john", "main", "call", "hours", "image", "department", "title", "description", "non", "k", "y", "insurance", "another", "why", "shall", "property", "class", "cd", "still", "money", "quality", "every", "listing", "content", "country", "private", "little", "visit", "save", "tools", "low", "reply", "customer", "december", "compare", "movies", "include", "college", "value", "article", "york", "man", "card", "jobs", "provide", "j", "food", "source", "author", "different", "press", "u", "learn", "sale", "around", "print", "course", "job", "canada", "process", "teen", "room", "stock", "training", "too", "credit", "point", "join", "science", "men", "categories", "advanced", "west", "sales", "look", "english", "left", "team", "estate", "box", "conditions", "select", "windows", "photos", "gay", "thread", "week", "category", "note", "live", "large", "gallery", "table", "register", "however", "june", "october", "november", "market", "library", "really", "action", "start", "series", "model", "features", "air", "industry", "plan", "human", "provided", "tv", "yes", "required", "second", "hot", "accessories", "cost", "movie", "forums", "march", "la", "september", "better", "say", "questions", "july", "yahoo", "going", "medical", "test", "friend", "come", "dec", "server", "pc", "study", "application", "cart", "staff", "articles", "san", "feedback", "again", "play", "looking", "issues", "april", "never", "users", "complete", "street", "topic", "comment", "financial", "things", "working", "against", "standard", "tax", "person", "below", "mobile", "less", "got", "blog", "party", "payment", "equipment", "login", "student", "let", "programs", "offers", "legal", "above", "recent", "park", "stores", "side", "act", "problem", "red", "give", "memory", "performance", "social", "q", "august", "quote", "language", "story", "sell", "options", "experience", "rates", "create", "key", "body", "young", "america", "important", "field", "few", "east", "paper", "single", "ii", "age", "activities", "club", "example", "girls", "additional", "password", "z", "latest", "something", "road", "gift", "question", "changes", "night", "ca", "hard", "texas", "oct", "pay", "four", "poker", "status", "browse", "issue", "range", "building", "seller", "court", "february", "always", "result", "audio", "light", "write", "war", "nov", "offer", "blue", "groups", "al", "easy", "given", "files", "event", "release", "analysis", "request", "fax", "china", "making", "picture", "needs", "possible", "might", "professional", "yet", "month", "major", "star", "areas", "future", "space", "committee", "hand", "sun", "cards", "problems", "london", "washington", "meeting", "rss", "become", "interest", "id", "child", "keep", "enter", "california", "porn", "share", "similar", "garden", "schools", "million", "added", "reference", "companies", "listed", "baby", "learning", "energy", "run", "delivery", "net", "popular", "term", "film", "stories", "put", "computers", "journal", "reports", "co", "try", "welcome", "central", "images", "president", "notice", "god", "original", "head", "radio", "until", "cell", "color", "self", "council", "away", "includes", "track", "australia", "discussion", "archive", "once", "others", "entertainment", "agreement", "format", "least", "society", "months", "log", "safety", "friends", "sure", "faq", "trade", "edition", "cars", "messages", "marketing", "tell", "further", "updated", "association", "able", "having", "provides", "david", "fun", "already", "green", "studies", "close", "common", "drive", "specific", "several", "gold", "feb", "living", "sep", "collection", "called", "short", "arts", "lot", "ask", "display", "limited", "powered", "solutions", "means", "director", "daily", "beach", "past", "natural", "whether", "due", "et", "electronics", "five", "upon", "period", "planning", "database", "says", "official", "weather", "mar", "land", "average", "done", "technical", "window", "france", "pro", "region", "island", "record", "direct", "microsoft", "conference", "environment", "records", "st", "district", "calendar", "costs", "style", "url", "front", "statement", "update", "parts", "aug", "ever", "downloads", "early", "miles", "sound", "resource", "present", "applications", "either", "ago", "document", "word", "works", "material", "bill", "apr", "written", "talk", "federal", "hosting", "rules", "final", "adult", "tickets", "thing", "centre", "requirements", "via", "cheap", "nude", "kids", "finance", "true", "minutes", "else", "mark", "third", "rock", "gifts", "europe", "reading", "topics", "bad", "individual", "tips", "plus", "auto", "cover", "usually", "edit", "together", "videos", "percent", "fast", "function", "fact", "unit", "getting", "global", "tech", "meet", "far", "economic", "en", "player", "projects", "lyrics", "often", "subscribe", "submit", "germany", "amount", "watch", "included", "feel", "though", "bank", "risk", "thanks", "everything", "deals", "various", "words", "linux", "jul", "production", "commercial", "james", "weight", "town", "heart", "advertising", "received", "choose", "treatment", "newsletter", "archives", "points", "knowledge", "magazine", "error", "camera", "jun", "girl", "currently", "construction", "toys", "registered", "clear", "golf", "receive", "domain", "methods", "chapter", "makes", "protection", "policies", "loan", "wide", "beauty", "manager", "india", "position", "taken", "sort", "listings", "models", "michael", "known", "half", "cases", "step", "engineering", "florida", "simple", "quick", "none", "wireless", "license", "paul", "friday", "lake", "whole", "annual", "published", "later", "basic", "sony", "shows", "corporate", "google", "church", "method", "purchase", "customers", "active", "response", "practice", "hardware", "figure", "materials", "fire", "holiday", "chat", "enough", "designed", "along", "among", "death", "writing", "speed", "html", "countries", "loss", "face", "brand", "discount", "higher", "effects", "created", "remember", "standards", "oil", "bit", "yellow", "political", "increase", "advertise", "kingdom", "base", "near", "environmental", "thought", "stuff", "french", "storage", "oh", "japan", "doing", "loans", "shoes", "entry", "stay", "nature", "orders", "availability", "africa", "summary", "turn", "mean", "growth", "notes", "agency", "king", "monday", "european", "activity", "copy", "although", "drug", "pics", "western", "income", "force", "cash", "employment", "overall", "bay", "river", "commission", "ad", "package", "contents", "seen", "players", "engine", "port", "album", "regional", "stop", "supplies", "started", "administration", "bar", "institute", "views", "plans", "double", "dog", "build", "screen", "exchange", "types", "soon", "sponsored", "lines", "electronic", "continue", "across", "benefits", "needed", "season", "apply", "someone", "held", "ny", "anything", "printer", "condition", "effective", "believe", "organization", "effect", "asked", "eur", "mind", "sunday", "selection", "casino", "pdf", "lost", "tour", "menu", "volume", "cross", "anyone", "mortgage", "hope", "silver", "corporation", "wish", "inside", "solution", "mature", "role", "rather", "weeks", "addition", "came", "supply", "nothing", "certain", "usr", "executive", "running", "lower", "necessary", "union", "jewelry", "according", "dc", "clothing", "mon", "com", "particular", "fine", "names", "robert", "homepage", "hour", "gas", "skills", "six", "bush", "islands", "advice", "career", "military", "rental", "decision", "leave", "british", "teens", "pre", "huge", "sat", "woman", "facilities", "zip", "bid", "kind", "sellers", "middle", "move", "cable", "opportunities", "taking", "values", "division", "coming", "tuesday", "object", "lesbian", "appropriate", "machine", "logo", "length", "actually", "nice", "score", "statistics", "client", "ok", "returns", "capital", "follow", "sample", "investment", "sent", "shown", "saturday", "christmas", "england", "culture", "band", "flash", "ms", "lead", "george", "choice", "went", "starting", "registration", "fri", "thursday", "courses", "consumer", "hi", "airport", "foreign", "artist", "outside", "furniture", "levels", "channel", "letter", "mode", "phones", "ideas", "wednesday", "structure", "fund", "summer", "allow", "degree", "contract", "button", "releases", "wed", "homes", "super", "male", "matter", "custom", "virginia", "almost", "took", "located", "multiple", "asian", "distribution", "editor", "inn", "industrial", "cause", "potential", "song", "cnet", "ltd", "los", "hp", "focus", "late", "fall", "featured", "idea", "rooms", "female", "responsible", "inc", "communications", "win", "associated", "thomas", "primary", "cancer", "numbers", "reason", "tool", "browser", "spring", "foundation", "answer", "voice", "eg", "friendly", "schedule", "documents", "communication", "purpose", "feature", "bed", "comes", "police", "everyone", "independent", "ip", "approach", "cameras", "brown", "physical", "operating", "hill", "maps", "medicine", "deal", "hold", "ratings", "chicago", "forms", "glass", "happy", "tue", "smith", "wanted", "developed", "thank", "safe", "unique", "survey", "prior", "telephone", "sport", "ready", "feed", "animal", "sources", "mexico", "population", "pa", "regular", "secure", "navigation", "operations", "therefore", "ass", "simply", "evidence", "station", "christian", "round", "paypal", "favorite", "understand", "option", "master", "valley", "recently", "probably", "thu", "rentals", "sea", "built", "publications", "blood", "cut", "worldwide", "improve", "connection", "publisher", "hall", "larger", "anti", "networks", "earth", "parents", "nokia", "impact", "transfer", "introduction", "kitchen", "strong", "tel", "carolina", "wedding", "properties", "hospital", "ground", "overview", "ship", "accommodation", "owners", "disease", "tx", "excellent", "paid", "italy", "perfect", "hair", "opportunity", "kit", "classic", "basis", "command", "cities", "william", "express", "anal", "award", "distance", "tree", "peter", "assessment", "ensure", "thus", "wall", "ie", "involved", "el", "extra", "especially", "interface", "pussy", "partners", "budget", "rated", "guides", "success", "maximum", "ma", "operation", "existing", "quite", "selected", "boy", "amazon", "patients", "restaurants", "beautiful", "warning", "wine", "locations", "horse", "vote", "forward", "flowers", "stars", "significant", "lists", "technologies", "owner", "retail", "animals", "useful", "directly", "manufacturer", "ways", "est", "son", "providing", "rule", "mac", "housing", "takes", "iii", "gmt", "bring", "catalog", "searches", "max", "trying", "mother", "authority", "considered", "told", "xml", "traffic", "programme", "joined", "input", "strategy", "feet", "agent", "valid", "bin", "modern", "senior", "ireland", "sexy", "teaching", "door", "grand", "testing", "trial", "charge", "units", "instead", "canadian", "cool", "normal", "wrote", "enterprise", "ships", "entire", "educational", "md", "leading", "metal", "positive", "fl", "fitness", "chinese", "opinion"]

  // Lat/Lon distance formula - http://stackoverflow.com/questions/5260423/torad-javascript-function-throwing-error
  // d = 2 * Radius of Earth * asin( ( (1 - cos(dLat)) / 2 + cos(lat1) * cos(lat2) * ( 1 - cos(dLon) ) / 2 ) ^ 0.5 )

  $(function () {
    var lat = 0.0, lon = 0.0;
    $('#lat').on('change', function () {
      lat = parseFloat(this.value)
      recalc();
    });
    $('#lon').on('change', function () {
      lon = parseFloat(this.value)
      recalc();
    });
    function recalc() {
      console.log({lat: lat, lon: lon})
      $('#out').text(JSON.stringify(get_words(lat, lon)))
    }
  })

  // Takes latitude and longitude in degrees, and returns a word combo based on above word list
  function get_words (lat, lon) {
    lat = parseFloat(lat % 90)
    lon = parseFloat(lon % 180)

    // Relevant Math when dLon == 0 / (1 - cos(dLon)) / 2 == 0
    // d = 2 * Radius of Earth * asin( ( (1 - cos(dLat)) / 2 ) ^ 0.5 )
    // d = 2 * Radius of Earth * asin( ( (2 * sin(dLat / 2) ^ 2 ) / 2 ) ^ 0.5 )
    // d = 2 * Radius of Earth * asin( ( sin(dLat / 2) ^ 2 ) ^ 0.5 )
    // d = 2 * Radius of Earth * asin( sin(dLat / 2) )
    // d = 2 * Radius of Earth * dLat / 2
    // d = Radius of Earth * dLat
    // d / Radius of Earth = dLat

    // http://www.wolframalpha.com/input/?i=3+meters+%2F+Radius+of+Earth
    // lat_per_3m = 3 meters / Radius of Earth -> to Degrees
    var lat_per_3m = 4.703568e-7 / Math.PI * 180

    // Get the square coordinate from the latitude contribution
    var square_from_lat = Math.floor(lat / lat_per_3m);
    var lat_corner = square_from_lat * lat_per_3m;

    // Latitude in radians
    var lat_corner_radians = lat_corner * Math.PI / 180;

    // Given:
    //   if dLat == 0 then (1 - cos(dLat)) / 2 == 0
    //   if dLon == 0 then (1 - cos(dLon)) / 2 == 0

    // Relevant Math when dLat == 0 / (1 - cos(dLat)) / 2 == 0
    //   d = 2 * Radius of Earth * asin( ( cos(lat) ^ 2 * ( 1 - cos(dLon) ) / 2 ) ^ 0.5 )
    //   d = 2 * Radius of Earth * asin( ( cos(lat) ^ 2 * ( 2 * sin(dLon / 2) ^ 2 ) / 2 ) ^ 0.5 )
    //   d / (2 * Radius of Earth) = asin( ( cos(lat) ^ 2 * sin(dLon / 2) ^ 2 ) ^ 0.5 )
    //   d / (2 * Radius of Earth) = asin( ( cos(lat) * sin(dLon / 2) )
    //   sin( d / (2 * Radius of Earth) ) = cos(lat) * sin(dLon / 2) 

    // Calculations:
    // http://www.wolframalpha.com/input/?i=sin(+3+meters+%2F+(2+*+Radius+of+Earth))
    // left_side = sin( 3 meters / (2 * Radius of Earth) ) = 2.351784e-7
    var left_side = 2.351784e-7;

    // step1 = left_side / cos(lat) = sin(dLon / 2) 
    var step1 = left_side / Math.cos(lat_corner_radians)

    // step2 = arcsin(step1) = dLon / 2
    var step2 = Math.asin(step1)

    // lon_per_3m = 2 * step2 -> to Degrees
    var lon_per_3m =  (2 * step2) / Math.PI * 180

    // Get the square coordinate from the longitude contribution
    var square_from_lon = Math.floor(lon / lon_per_3m)

    //----------------------//
    var max_squares_lat = Math.ceil(180 / lat_per_3m)
    var max_squares_lon = Math.ceil(360 / lat_per_3m)

    // Calculate more than the max number of squares
    var max_squares_total = max_squares_lat * max_squares_lon

    // Calculate the number of the current square
    if (square_from_lat < 0) square_from_lat += max_squares_lat;
    if (square_from_lon < 0) square_from_lon += max_squares_lon;
    var square_number = max_squares_lat * square_from_lat + square_from_lon

    // Calculate how many words are necessary for this many squares
    var words_needed = Math.ceil(Math.log(max_squares_total) / Math.log(words.length))

    // Map the square number to words
    var words_selected = [];
    for (i = 0; i < words_needed; i++) {
      var div = Math.pow(words.length, i)
      var word_index = Math.floor( (square_number / div) % words.length)
      words_selected.push(words[word_index])
    }

    return words_selected;
    //console.log({lat_per_3m: lat_per_3m, lon_per_3m: lon_per_3m, square_from_lat: square_from_lat, square_from_lon: square_from_lon, max_squares: max_squares, words_needed: words_needed})
  }  
 })()
	(function () {
	var words = ["the", "of", "and", "to", "a", "in", "for", "is", "on", "that", "by", "this", "with", "i", "you", "it", "not", "or", "be", "are", "from", "at", "as", "your", "all", "have", "new", "more", "an", "was", "we", "will", "home", "can", "us", "about", "if", "page", "my", "has", "search", "free", "but", "our", "one", "other", "do", "no", "information", "time", "they", "site", "he", "up", "may", "what", "which", "their", "news", "out", "use", "any", "there", "see", "only", "so", "his", "when", "contact", "here", "business", "who", "web", "also", "now", "help", "get", "pm", "view", "online", "c", "e", "first", "am", "been", "would", "how", "were", "me", "s", "services", "some", "these", "click", "its", "like", "service", "x", "than", "find", "price", "date", "back", "top", "people", "had", "list", "name", "just", "over", "state", "year", "day", "into", "email", "two", "health", "n", "world", "re", "next", "used", "go", "b", "work", "last", "most", "products", "music", "buy", "data", "make", "them", "should", "product", "system", "post", "her", "city", "t", "add", "policy", "number", "such", "please", "available", "copyright", "support", "message", "after", "best", "software", "then", "jan", "good", "video", "well", "d", "where", "info", "rights", "public", "books", "high", "school", "through", "m", "each", "links", "she", "review", "years", "order", "very", "privacy", "book", "items", "company", "r", "read", "group", "sex", "need", "many", "user", "said", "de", "does", "set", "under", "general", "research", "university", "january", "mail", "full", "map", "reviews", "program", "life", "know", "games", "way", "days", "management", "p", "part", "could", "great", "united", "hotel", "real", "f", "item", "international", "center", "ebay", "must", "store", "travel", "comments", "made", "development", "report", "off", "member", "details", "line", "terms", "before", "hotels", "did", "send", "right", "type", "because", "local", "those", "using", "results", "office", "education", "national", "car", "design", "take", "posted", "internet", "address", "community", "within", "states", "area", "want", "phone", "dvd", "shipping", "reserved", "subject", "between", "forum", "family", "l", "long", "based", "w", "code", "show", "o", "even", "black", "check", "special", "prices", "website", "index", "being", "women", "much", "sign", "file", "link", "open", "today", "technology", "south", "case", "project", "same", "pages", "uk", "version", "section", "own", "found", "sports", "house", "related", "security", "both", "g", "county", "american", "photo", "game", "members", "power", "while", "care", "network", "down", "computer", "systems", "three", "total", "place", "end", "following", "download", "h", "him", "without", "per", "access", "think", "north", "resources", "current", "posts", "big", "media", "law", "control", "water", "history", "pictures", "size", "art", "personal", "since", "including", "guide", "shop", "directory", "board", "location", "change", "white", "text", "small", "rating", "rate", "government", "children", "during", "usa", "return", "students", "v", "shopping", "account", "times", "sites", "level", "digital", "profile", "previous", "form", "events", "love", "old", "john", "main", "call", "hours", "image", "department", "title", "description", "non", "k", "y", "insurance", "another", "why", "shall", "property", "class", "cd", "still", "money", "quality", "every", "listing", "content", "country", "private", "little", "visit", "save", "tools", "low", "reply", "customer", "december", "compare", "movies", "include", "college", "value", "article", "york", "man", "card", "jobs", "provide", "j", "food", "source", "author", "different", "press", "u", "learn", "sale", "around", "print", "course", "job", "canada", "process", "teen", "room", "stock", "training", "too", "credit", "point", "join", "science", "men", "categories", "advanced", "west", "sales", "look", "english", "left", "team", "estate", "box", "conditions", "select", "windows", "photos", "gay", "thread", "week", "category", "note", "live", "large", "gallery", "table", "register", "however", "june", "october", "november", "market", "library", "really", "action", "start", "series", "model", "features", "air", "industry", "plan", "human", "provided", "tv", "yes", "required", "second", "hot", "accessories", "cost", "movie", "forums", "march", "la", "september", "better", "say", "questions", "july", "yahoo", "going", "medical", "test", "friend", "come", "dec", "server", "pc", "study", "application", "cart", "staff", "articles", "san", "feedback", "again", "play", "looking", "issues", "april", "never", "users", "complete", "street", "topic", "comment", "financial", "things", "working", "against", "standard", "tax", "person", "below", "mobile", "less", "got", "blog", "party", "payment", "equipment", "login", "student", "let", "programs", "offers", "legal", "above", "recent", "park", "stores", "side", "act", "problem", "red", "give", "memory", "performance", "social", "q", "august", "quote", "language", "story", "sell", "options", "experience", "rates", "create", "key", "body", "young", "america", "important", "field", "few", "east", "paper", "single", "ii", "age", "activities", "club", "example", "girls", "additional", "password", "z", "latest", "something", "road", "gift", "question", "changes", "night", "ca", "hard", "texas", "oct", "pay", "four", "poker", "status", "browse", "issue", "range", "building", "seller", "court", "february", "always", "result", "audio", "light", "write", "war", "nov", "offer", "blue", "groups", "al", "easy", "given", "files", "event", "release", "analysis", "request", "fax", "china", "making", "picture", "needs", "possible", "might", "professional", "yet", "month", "major", "star", "areas", "future", "space", "committee", "hand", "sun", "cards", "problems", "london", "washington", "meeting", "rss", "become", "interest", "id", "child", "keep", "enter", "california", "porn", "share", "similar", "garden", "schools", "million", "added", "reference", "companies", "listed", "baby", "learning", "energy", "run", "delivery", "net", "popular", "term", "film", "stories", "put", "computers", "journal", "reports", "co", "try", "welcome", "central", "images", "president", "notice", "god", "original", "head", "radio", "until", "cell", "color", "self", "council", "away", "includes", "track", "australia", "discussion", "archive", "once", "others", "entertainment", "agreement", "format", "least", "society", "months", "log", "safety", "friends", "sure", "faq", "trade", "edition", "cars", "messages", "marketing", "tell", "further", "updated", "association", "able", "having", "provides", "david", "fun", "already", "green", "studies", "close", "common", "drive", "specific", "several", "gold", "feb", "living", "sep", "collection", "called", "short", "arts", "lot", "ask", "display", "limited", "powered", "solutions", "means", "director", "daily", "beach", "past", "natural", "whether", "due", "et", "electronics", "five", "upon", "period", "planning", "database", "says", "official", "weather", "mar", "land", "average", "done", "technical", "window", "france", "pro", "region", "island", "record", "direct", "microsoft", "conference", "environment", "records", "st", "district", "calendar", "costs", "style", "url", "front", "statement", "update", "parts", "aug", "ever", "downloads", "early", "miles", "sound", "resource", "present", "applications", "either", "ago", "document", "word", "works", "material", "bill", "apr", "written", "talk", "federal", "hosting", "rules", "final", "adult", "tickets", "thing", "centre", "requirements", "via", "cheap", "nude", "kids", "finance", "true", "minutes", "else", "mark", "third", "rock", "gifts", "europe", "reading", "topics", "bad", "individual", "tips", "plus", "auto", "cover", "usually", "edit", "together", "videos", "percent", "fast", "function", "fact", "unit", "getting", "global", "tech", "meet", "far", "economic", "en", "player", "projects", "lyrics", "often", "subscribe", "submit", "germany", "amount", "watch", "included", "feel", "though", "bank", "risk", "thanks", "everything", "deals", "various", "words", "linux", "jul", "production", "commercial", "james", "weight", "town", "heart", "advertising", "received", "choose", "treatment", "newsletter", "archives", "points", "knowledge", "magazine", "error", "camera", "jun", "girl", "currently", "construction", "toys", "registered", "clear", "golf", "receive", "domain", "methods", "chapter", "makes", "protection", "policies", "loan", "wide", "beauty", "manager", "india", "position", "taken", "sort", "listings", "models", "michael", "known", "half", "cases", "step", "engineering", "florida", "simple", "quick", "none", "wireless", "license", "paul", "friday", "lake", "whole", "annual", "published", "later", "basic", "sony", "shows", "corporate", "google", "church", "method", "purchase", "customers", "active", "response", "practice", "hardware", "figure", "materials", "fire", "holiday", "chat", "enough", "designed", "along", "among", "death", "writing", "speed", "html", "countries", "loss", "face", "brand", "discount", "higher", "effects", "created", "remember", "standards", "oil", "bit", "yellow", "political", "increase", "advertise", "kingdom", "base", "near", "environmental", "thought", "stuff", "french", "storage", "oh", "japan", "doing", "loans", "shoes", "entry", "stay", "nature", "orders", "availability", "africa", "summary", "turn", "mean", "growth", "notes", "agency", "king", "monday", "european", "activity", "copy", "although", "drug", "pics", "western", "income", "force", "cash", "employment", "overall", "bay", "river", "commission", "ad", "package", "contents", "seen", "players", "engine", "port", "album", "regional", "stop", "supplies", "started", "administration", "bar", "institute", "views", "plans", "double", "dog", "build", "screen", "exchange", "types", "soon", "sponsored", "lines", "electronic", "continue", "across", "benefits", "needed", "season", "apply", "someone", "held", "ny", "anything", "printer", "condition", "effective", "believe", "organization", "effect", "asked", "eur", "mind", "sunday", "selection", "casino", "pdf", "lost", "tour", "menu", "volume", "cross", "anyone", "mortgage", "hope", "silver", "corporation", "wish", "inside", "solution", "mature", "role", "rather", "weeks", "addition", "came", "supply", "nothing", "certain", "usr", "executive", "running", "lower", "necessary", "union", "jewelry", "according", "dc", "clothing", "mon", "com", "particular", "fine", "names", "robert", "homepage", "hour", "gas", "skills", "six", "bush", "islands", "advice", "career", "military", "rental", "decision", "leave", "british", "teens", "pre", "huge", "sat", "woman", "facilities", "zip", "bid", "kind", "sellers", "middle", "move", "cable", "opportunities", "taking", "values", "division", "coming", "tuesday", "object", "lesbian", "appropriate", "machine", "logo", "length", "actually", "nice", "score", "statistics", "client", "ok", "returns", "capital", "follow", "sample", "investment", "sent", "shown", "saturday", "christmas", "england", "culture", "band", "flash", "ms", "lead", "george", "choice", "went", "starting", "registration", "fri", "thursday", "courses", "consumer", "hi", "airport", "foreign", "artist", "outside", "furniture", "levels", "channel", "letter", "mode", "phones", "ideas", "wednesday", "structure", "fund", "summer", "allow", "degree", "contract", "button", "releases", "wed", "homes", "super", "male", "matter", "custom", "virginia", "almost", "took", "located", "multiple", "asian", "distribution", "editor", "inn", "industrial", "cause", "potential", "song", "cnet", "ltd", "los", "hp", "focus", "late", "fall", "featured", "idea", "rooms", "female", "responsible", "inc", "communications", "win", "associated", "thomas", "primary", "cancer", "numbers", "reason", "tool", "browser", "spring", "foundation", "answer", "voice", "eg", "friendly", "schedule", "documents", "communication", "purpose", "feature", "bed", "comes", "police", "everyone", "independent", "ip", "approach", "cameras", "brown", "physical", "operating", "hill", "maps", "medicine", "deal", "hold", "ratings", "chicago", "forms", "glass", "happy", "tue", "smith", "wanted", "developed", "thank", "safe", "unique", "survey", "prior", "telephone", "sport", "ready", "feed", "animal", "sources", "mexico", "population", "pa", "regular", "secure", "navigation", "operations", "therefore", "ass", "simply", "evidence", "station", "christian", "round", "paypal", "favorite", "understand", "option", "master", "valley", "recently", "probably", "thu", "rentals", "sea", "built", "publications", "blood", "cut", "worldwide", "improve", "connection", "publisher", "hall", "larger", "anti", "networks", "earth", "parents", "nokia", "impact", "transfer", "introduction", "kitchen", "strong", "tel", "carolina", "wedding", "properties", "hospital", "ground", "overview", "ship", "accommodation", "owners", "disease", "tx", "excellent", "paid", "italy", "perfect", "hair", "opportunity", "kit", "classic", "basis", "command", "cities", "william", "express", "anal", "award", "distance", "tree", "peter", "assessment", "ensure", "thus", "wall", "ie", "involved", "el", "extra", "especially", "interface", "pussy", "partners", "budget", "rated", "guides", "success", "maximum", "ma", "operation", "existing", "quite", "selected", "boy", "amazon", "patients", "restaurants", "beautiful", "warning", "wine", "locations", "horse", "vote", "forward", "flowers", "stars", "significant", "lists", "technologies", "owner", "retail", "animals", "useful", "directly", "manufacturer", "ways", "est", "son", "providing", "rule", "mac", "housing", "takes", "iii", "gmt", "bring", "catalog", "searches", "max", "trying", "mother", "authority", "considered", "told", "xml", "traffic", "programme", "joined", "input", "strategy", "feet", "agent", "valid", "bin", "modern", "senior", "ireland", "sexy", "teaching", "door", "grand", "testing", "trial", "charge", "units", "instead", "canadian", "cool", "normal", "wrote", "enterprise", "ships", "entire", "educational", "md", "leading", "metal", "positive", "fl", "fitness", "chinese", "opinion"]

	// Lat/Lon distance formula - http://stackoverflow.com/questions/5260423/torad-javascript-function-throwing-error
	// d = 2 * Radius of Earth * asin( ( (1 - cos(dLat)) / 2 + cos(lat1) * cos(lat2) * ( 1 - cos(dLon) ) / 2 ) ^ 0.5 )

	$(function () {
	var lat = 0.0, lon = 0.0;
	$('#lat').on('change', function () {
	lat = parseFloat(this.value)
	recalc();
	});
	$('#lon').on('change', function () {
	lon = parseFloat(this.value)
	recalc();
	});
	function recalc() {
	console.log({lat: lat, lon: lon})
	$('#out').text(JSON.stringify(get_words(lat, lon)))
	}
	})

	// Takes latitude and longitude in degrees, and returns a word combo based on above word list
	function get_words (lat, lon) {
	lat = parseFloat(lat % 90)
	lon = parseFloat(lon % 180)

	// Relevant Math when dLon == 0 / (1 - cos(dLon)) / 2 == 0
	// d = 2 * Radius of Earth * asin( ( (1 - cos(dLat)) / 2 ) ^ 0.5 )
	// d = 2 * Radius of Earth * asin( ( (2 * sin(dLat / 2) ^ 2 ) / 2 ) ^ 0.5 )
	// d = 2 * Radius of Earth * asin( ( sin(dLat / 2) ^ 2 ) ^ 0.5 )
	// d = 2 * Radius of Earth * asin( sin(dLat / 2) )
	// d = 2 * Radius of Earth * dLat / 2
	// d = Radius of Earth * dLat
	// d / Radius of Earth = dLat

	// http://www.wolframalpha.com/input/?i=3+meters+%2F+Radius+of+Earth
	// lat_per_3m = 3 meters / Radius of Earth -> to Degrees
	var lat_per_3m = 4.703568e-7 / Math.PI * 180

	// Get the square coordinate from the latitude contribution
	var square_from_lat = Math.floor(lat / lat_per_3m);
	var lat_corner = square_from_lat * lat_per_3m;

	// Latitude in radians
	var lat_corner_radians = lat_corner * Math.PI / 180;

	// Given:
	// if dLat == 0 then (1 - cos(dLat)) / 2 == 0
	// if dLon == 0 then (1 - cos(dLon)) / 2 == 0

	// Relevant Math when dLat == 0 / (1 - cos(dLat)) / 2 == 0
	// d = 2 * Radius of Earth * asin( ( cos(lat) ^ 2 * ( 1 - cos(dLon) ) / 2 ) ^ 0.5 )
	// d = 2 * Radius of Earth * asin( ( cos(lat) ^ 2 * ( 2 * sin(dLon / 2) ^ 2 ) / 2 ) ^ 0.5 )
	// d / (2 * Radius of Earth) = asin( ( cos(lat) ^ 2 * sin(dLon / 2) ^ 2 ) ^ 0.5 )
	// d / (2 * Radius of Earth) = asin( ( cos(lat) * sin(dLon / 2) )
	// sin( d / (2 * Radius of Earth) ) = cos(lat) * sin(dLon / 2)

	// Calculations:
	// http://www.wolframalpha.com/input/?i=sin(+3+meters+%2F+(2+*+Radius+of+Earth))
	// left_side = sin( 3 meters / (2 * Radius of Earth) ) = 2.351784e-7
	var left_side = 2.351784e-7;

	// step1 = left_side / cos(lat) = sin(dLon / 2)
	var step1 = left_side / Math.cos(lat_corner_radians)

	// step2 = arcsin(step1) = dLon / 2
	var step2 = Math.asin(step1)

	// lon_per_3m = 2 * step2 -> to Degrees
	var lon_per_3m = (2 * step2) / Math.PI * 180

	// Get the square coordinate from the longitude contribution
	var square_from_lon = Math.floor(lon / lon_per_3m)

	//----------------------//
	var max_squares_lat = Math.ceil(180 / lat_per_3m)
	var max_squares_lon = Math.ceil(360 / lat_per_3m)

	// Calculate more than the max number of squares
	var max_squares_total = max_squares_lat * max_squares_lon

	// Calculate the number of the current square
	if (square_from_lat < 0) square_from_lat += max_squares_lat;
	if (square_from_lon < 0) square_from_lon += max_squares_lon;
	var square_number = max_squares_lat * square_from_lat + square_from_lon

	// Calculate how many words are necessary for this many squares
	var words_needed = Math.ceil(Math.log(max_squares_total) / Math.log(words.length))

	// Map the square number to words
	var words_selected = [];
	for (i = 0; i < words_needed; i++) {
	var div = Math.pow(words.length, i)
	var word_index = Math.floor( (square_number / div) % words.length)
	words_selected.push(words[word_index])
	}

	return words_selected;
	//console.log({lat_per_3m: lat_per_3m, lon_per_3m: lon_per_3m, square_from_lat: square_from_lat, square_from_lon: square_from_lon, max_squares: max_squares, words_needed: words_needed})
	}
	})()