Ethereum Lands

TODO

solve the problem where someone owns a chunk of area. How would you calculate the already owned area for every owner without burning through a ton of gas? Use an oracle service to do this...

0x456642342342 => { "coordinates": [ [1,2], [3,4], [56,44] ] }

0x7d77e7349BFE929292D => { "coordinates": [ [88, 44], [100,677], [345, 67] ] }

do any of these coordinates intersect at all?

Shapefile example:

{
  "type": "polygon",
  "coordinates": [
    [1,2],
    [3,4],
    [56,44]
  ]
}

Shapefile example:

{
  "type": "circle",
  "coordinates": [
    [1,2]
  ],
  "radius": 44
}

{address}: [ {shapefile}, {shapefile}, ... ]

{ "address1": { shapefiles: [...], index } }

coordinates are lat/long, but due to solidity lack of fixed numbers, we store lat/long in without their decimals to 8 decimal places. For example:

(Disneyland) 33.8120815,-117.9189609 is: 3381208150, -11791896090

39, -94.55 is: 3900000000, -9455000000

0.1, -0.1 is: 010000000, -010000000, which is: 10000000, -10000000

0.00045, 0.00000001 is: 45000, 1

0 = 0 degrees 1 = 0.00000001 degrees 10 = 0.00000010 degrees 100 = 0.00000100 degrees