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What's a reasonable triangle size for terrain?

Gnollrunner · 2018-10-31T09:56:15

As some of you know I'm doing procedural planet generation. My algorithm needs a very rough size for the highest resolution terrain voxels. It bases LOD calculations on that value. For flat terrain the size of a mesh triangle (which will be roughly equilateral) will be equal to the voxel size. What I'm wondering is what's a good size for the edge of such a triangle. I was thinking maybe 25 cm. To clarify this would be the size of a triangle under the feet of a standing character. I guess what I'm asking is what is the range of values for triangles in terrain meshes used in games these days. I know it will vary, but I'm trying to get a ball park figure for say a theoretical average 3D game.