public void getH3UnidirectionalEdgeAndFriends()
{
H3Index sf = H3Index.geoToH3(ref sfGeo, 9);
List <H3Index> ring = new ulong[Algos.maxKringSize(1)].Select(cell => new H3Index(cell)).ToList();
Algos.hexRing(sf, 1, ref ring);
H3Index sf2 = ring[0];
H3Index edge = H3UniEdge.getH3UnidirectionalEdge(sf, sf2);
Assert.True(sf == H3UniEdge.getOriginH3IndexFromUnidirectionalEdge(edge),
"can retrieve the origin from the edge");
Assert.True(
sf2 == H3UniEdge.getDestinationH3IndexFromUnidirectionalEdge(edge),
"can retrieve the destination from the edge");
var originDestination = new ulong[2].Select(cell => new H3Index(cell)).ToList();
H3UniEdge.getH3IndexesFromUnidirectionalEdge(edge, ref originDestination);
Assert.True(originDestination[0] == sf,
"got the origin first in the pair request");
Assert.True(originDestination[1] == sf2,
"got the destination last in the pair request");
List <H3Index> largerRing = new ulong[Algos.maxKringSize(2)].Select(cell => new H3Index(cell)).ToList();
Algos.hexRing(sf, 2, ref largerRing);
H3Index sf3 = largerRing[0];
H3Index notEdge = H3UniEdge.getH3UnidirectionalEdge(sf, sf3);
Assert.True(notEdge == 0, "Non-neighbors can't have edges");
}
public static H3Index[] GetH3IndexesFromUnidirectionalEdge(Code.H3Index edge)
{
List <Code.H3Index> cells = new List <Code.H3Index> {
0, 0
};
H3UniEdge.getH3IndexesFromUnidirectionalEdge(edge, ref cells);
return(cells.Select(v => new H3Index {
Value = v.value
}).ToArray());
}