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#procgen

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Who said simplex noise can't be made tiling?

Align one axis of the simplex grid (just a triangle grid in 2D) with the x axis, stretch it slightly on the y axis (8 * ½ * sqrt(3) = 6.93, almost 7), and mod the grid indices appropriately so that corresponding points in different tiles end up with the same hash value.

Another good size is 13x13, which needs only 0.1% stretch (15 * ½ * sqrt(3) = 12.99). But in practice, the stretch is almost unnoticeable anyway.

I wanted to do a side-by-side comparison of my procedural animation to hand-authored animations on some models I bought. This is so I can better study what I need to improve.

When I got my comparison tool running for the first time, this is what I was greeted with! A bug with the step-height it seems. 😅

(Sound track: "Entrance of the Gladiators") #procgen