tune: INC_K 0.78 -> 1.40 from the measured depth distribution (terrain-water task 10)

First tuning run (seed 1375359975): p50 2.3 / p90 6.1 / p99 13.6 / max
30.0 m — typical gullies under the 8-15 m target. K=1.40 confirmed:
p50 3.3 / p90 10.2 / p99 22.9 / max 30.0, zero sea-clamp hits.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
This commit is contained in:
Stewart Howe 2026-08-08 18:20:16 -04:00
parent 21dc3d16ce
commit 822c1530c3

View file

@ -30,7 +30,7 @@ public static class TerrainDetailPass
// Pass B — incision. K/p tuned against the depth targets (gullies 815 m,
// trunks ~25 m, cap 30 m); the tuning run's achieved distribution is in the
// task-10 report.
public const float INC_K = 0.78f;
public const float INC_K = 1.40f;
public const float INC_P = 0.45f; // concave: many fingers, few deep trunks
public const float INC_CAP_M = 30f; // IncisionMax
public const float SEA_CLAMP = 0.15f + 1f / 251f; // carved height ≥ sea + 1 m