Neighboring cells only to the west

[brettstack]

So I plotted the center points of the neighboring cells and got this map of neighboring cells. Compare that to another map I have plotted with the red marker showing the location of the character for that heartbeat. As you can see, the neighboring cells are spanning to the left/west. Is this a bug or am I misunderstanding the intent? I would have assumed it would get neighboring cells in all directions.

[dotomaz]

That's because of how hilbert curve in s2 library works. Ultimately if you go a couple of cells back and a couple next you'll get complete coverage of surrounding cells.

[brettstack]

Could you explain with code what you mean, "if you go a couple of cells back and a couple next"?

On Sat, 23 Jul 2016, 01:14 dotomaz, notifications@github.com wrote:

That's because of how hilbert curve in s2 library http://blog.christianperone.com/2015/08/googles-s2-geometry-on-the-sphere-cells-and-hilbert-curve/ works. Ultimately if you go a couple of cells back and a couple next you'll get complete coverage of surrounding cells.

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[dotomaz]

See the getNeighbors() function in poke.io.js

[brettstack]

That's the function that is generating these west-only cells, so the code there does not help me :(

[Armax]

we are still working on the s2 library