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mapbox / vector-tile-spec

Mapbox Vector Tile specification
https://www.mapbox.com/vector-tiles/specification/
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Add "encoding" section for multi-polygon example #83

Closed mapsam closed 7 years ago

mapsam commented 8 years ago

Each of the examples includes an encoding section like this for linestring:

Encoded as: [ 9 4 4 18 0 16 16 0 ]
              |      |      ==== relative LineTo(+8, +0) == Line to Point (10, 10)
              |      | ==== relative LineTo(+0, +8) == Line to Point (2, 10)
              |      `> [00010 010] = command id 2 (LineTo), command count 2
              | === relative MoveTo(+2, +2)
              `> [00001 001] = command id 1 (MoveTo), command count 1

except for the multi polygon example. It would be great to get this in there!

coryagami commented 7 years ago

I found myself wanting the same! So after I figured it out I added it to the README.md :)

For ease I'll also add it here:

Encoded as: [ 9 0 0 26 20 0 0 20 19 0 15 9 22 2 26 18 0 0 18 17 0 15 9 4 13 26 0 8 8 0 0 7 15 ]
              |      |                |  |       |                |  |       |              `> [00001 111] (ClosePath)
              |      |                |  |       |                |  |       `> [00011 010] = (LineTo), command count 3
              |      |                |  |       |                |  `> [00001 001] = command id 1 (MoveTo), command count 1
              |      |                |  |       |                `> [00001 111] (ClosePath)
              |      |                |  |       `> [00011 010] = (LineTo), command count 3
              |      |                | `> [00001 001] = command id 1 (MoveTo), command count 1
              |      |                `> [00001 111] (ClosePath)
              |      `> [00011 010] = (LineTo), command count 3
              `> [00001 001] = command id 1 (MoveTo), command count 1
mapsam commented 7 years ago

Wow, thank you so much @coryagami!