Curriculum

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[[Projects:projects]]:[[voyc]]

====== todo ======


save sketch
  * on save, 
    * require login
    * require layername (fc)
    * on new layer
      * add layer
      * make the layer visible
      * add layer menu button 
  * on startup 
    * extract and load usergeo layers
    * add layer menu buttons
    * fix localStorage layers

sketch
  * draw across antimeridian

general
  * db backup script cron: backup geo

  * change title to voyc
  * pt voyc.com docroot symlink to geo

  * db design for custom user data
    * palette table, defaults, named, user-custom
    * layer table, base, user-custom
    * custom geo data, within layers

  * grep: rewrite accounts to use config.ini instead of config.php
  * move and zoom don't work right for hires layer
  * cylindrical stitch not implemented for empire, animation, cover

load data to schema geo
  * x load ground-cover from osmtilemill-georegions
  * fixup ground-cover from osmtilemill-georegions
    * x deserts
    * mountains
  * load data from natural earth data
  * fixup data from natural earth data
    * rivers
    * lakes
    * cities

  * load data from plunder
  * load data from voyc/fpd
    * empire

  * generate alpha table

layer extraction scripts
    * extraction sql: sr, fc, lat, lng
    * ST_GeomFromGeoJSON, add Caspian Sea to lakes, simplify Caspian sea
    * Column show vs search
    * Layer features.
      * Caspian
      * Mountains
      * Tundra, plateau, steppe, 
  * Empire: plunder vs fpd
    * sql for layer extraction, fpd
    * sql for search, plunder 
    * Kush, Mongols

Bugs
  * loading order, land first, add importance to list.sort and renametiles
  * pointInPolygon() does not always work, see Crystal Mountains
  * rank 1,2 gridlines hit only sometimes, seems to always work at intersection with other geoms
  * timepicker, arrow keys attempt string instead of numeric addition, until after first use of slider
  * timeslider appears on startup even when history layer is disabled
  * tile loading gets slower with every restart, until browser is cycled
  * hilite of cities
    * sets moved true, redraws whole screen ?
    * hittest on close group of cities returns the wrong one 
  * hagstrand/lab is too big, move media out of git

Features
  * setup ctx ahead of time, not at draw time, after layer creation, "fixup layer palettes"
  * db update for editing base layers
  * db update for custom layers
  * cities and treasure layers with point medalions
  * Little x to close label, main menu, search results
  * North button, appears when gamma non-zero
  * time
    * add <<  >> fast forward
    * when touching mouse to date, resolve to slider
  * clear hilite on zoom (or reposition label on every move/zoom redraw)
  * layer choice:
    * water, land, mountains, deserts - fast-twitch, quick draw
    * lores - when ready
    * hires - when ready and scale > 2.4
  * animate projection switch
    * adjust latClamp along with mf
    * adjust co upwards during mercatorStretch and vice-versa
    * finish soupcan
    * mix globe-soupcan
    * mix soupcan-equirectangular
  * bookmarks, share

Sketch
  * grep: rename sketchpad.js to sketch.js, we now have two versions of voyc.Sketch object
  * sketch custom objects crossing antimeridian
  * mask land https://stackoverflow.com/questions/18379818/canvas-image-masking-overlapping, ctx.clip()
  * auto close, and start new shape
    * double click (line and polygon)
    * drop the next point on the first point (polygon only)
  * distance
  * Globe: great circle
  * Mercator: rhumb line
    * https://javascript.hotexamples.com/examples/%40turf.rhumb-distance/-/default/javascript-default-function-examples.html
    * https://stackoverflow.com/questions/4541134/rhumb-line-calculation-javascript-to-php
 

Palette
  * City icons
  * palette by x, scale, fc, c, 
  * palette options
    * blur (feather) a border https://developer.mozilla.org/en-US/docs/Web/API/CanvasRenderingContext2D/filter
    * multi shapes
  * GeoIterator Callbacks
    * Drawing
    * Qualify
    * Choose palette
    * Scaling
  * Drawing pipeline (palette choices)
    * per group,
    * Per scale
    * per geom
  * editable palette
    * consider base palette vs custom palette
    * KEEP data and presentation separate
    * data goes in database, palette in local storage.
        * custom layers require 1 palette for each layer
        * named palettes
    * put palette in local storage
  * save user data
    * save custom layers to db, svc writeLayer
    * read custom layers from db, svc readLayer
    * store palettes in db, svc writePalette
    * read palettes from db, svc readPalette
    * save localStorage in db
  * Palette Editor
    * checkboxes: line,poly,point

^            ^ line  ^ poly  ^ point  ^
| lineWidth  | x     | x     | x      |
| Dash       | x     | x     | x      |     
| Radius     |       |       | x      |
| Line color | x     | x     | x      |
| Fill color |       | x     | x      |
| Pattern    |       | x     |        | 
| Blur       |       | x     |        |
| Opacity    |       | x     |        |


Layer Editor
  * name
  * description
  * palettes (line/point/poly), scaling, multicolored
  * (Sketch and custom use three palettes)
  * Edit layer 
    * x. save geom in custom01
    * 2. save geom in any custom layer, from menu of custom layers
    * 3. edit an already existing shape
      * how do we select a shape for editing?
        * before saving, you can grab any point and move it
        * you can select any object on the page and begin editing it, moving points, close it if not already 
      * how do we select a layer for editing?
    * 4. save in base layer, restricted shape type
      * setting: allow base layer editing
  * Edit custom layers
      * x put layer menu in local storage
      * new layer
      * attributes and data saved in database by userid
        * Public, private
        * Description, tags
        * custom palettes
      * Search engine


Custom Layer Examples
  * Oceans: hand crafted
  * Countries historical
  * Continents, europe, Asia
  * Cities, metro, pop, historical
  * Boundaries for metro and megalopolis, zoom in metro for component cities
  * Marianna Trench
  * Rift valley, africa, home to birthplace of homo sapiens
  * CIA puppets
  * china expansion
  * international dateline
  * wars, battles
  * Groups: Balkans yugoslavakia, 
  * stans, western Russia,
  * Where did WW1 start?
  * Tobacco to food industry
  * mountains, google "list of mountain ranges", "list of highest mountains", himalaya, karakorum, hindu kush
  * KHABIB NURMAGOMEDOV, dagestan, russia
  * Borat, Kazakhastan
  * mythological utopia
    * xanadu, marco polo, kublai khan, https://www.worldhistory.org/Xanadu/
    * tibet (Lost horizon?, 7 years)
    * timbuktu
    * katmandu
  * Chokepoints
    * Cumberland
    * Two horns, Africa, Arabia, straits
    * Capes, good hope, cod, 
    * Strait Malacca, piracy
    * Natural vs man-made, canal, bridge, turnpike, borders Crossing
    * Miles Davis twice
    * Berlin
    * Athens school
    * Kuyber Pass
    * greece-turkey
    * crusades, ghengis khan, marco polo (kublai khan) (chokepoint or coincidence?)