Aetheria/Assets/Scripts/Editor/ShieldPanelCut2Verify.cs.meta

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Collapse the two implicit shield ellipsoids into ShieldEnvelope (Cut 2) FieldDriver derived the shield ellipsoid from its own transform.localScale; ShieldManager derived it independently from the Shield prefab instance's transform, doing the same normalise-and-project by hand against a different object. Add ShieldEnvelope as the one reader of a transform's centre, radii, surface projection, and true outward normal (derived, not authored, per R6 -- no second copy of numbers the physical MeshCollider already owns), and switch both consumers onto it, deleting their hand-rolled projections. Radii read the attached collider mesh's own bounds.extents per axis rather than assuming a flat 0.5 or 1.0: Shield.prefab's Icosphere collider measures (0.0095106, 0.01, 0.01), not a uniform round number, and the cubesphere's collider measures exactly (1,1,1) -- confirmed by a throwaway batchmode probe against the actual mesh assets, not guessed. SurfaceNormal is not normalize(p): a non-uniform ellipsoid's true normal is the gradient of the implicit surface, transformed by rotation and the INVERSE of lossyScale (a normal is a covector). The first implementation used TransformDirection (rotation and forward scale) and the batchmode probe's finite-difference gradient check caught it immediately -- exactly the plausible-looking-wrong-answer failure mode the cut map called out by name. Both original consumers keep normalize(p)-equivalent behaviour via the new SurfaceDirection method, since they only ever wanted a direction. FieldDriver falls back to its pre-cut formulas (logged once) when no ShieldEnvelope is present, since it has no guaranteed carrier yet. ShieldManager does not: every object that carries it gets an envelope in this cut, so a missing one logs an error and degrades to a fixed direction rather than recomputing a second projection. No prefab or scene file is touched here (Q5: the operator rigs prefabs and scenes by hand); ShieldPanelCut2Verify's batchmode probe instead builds synthetic transforms carrying Longinus's and Djinni's actual override values plus the real Icosphere mesh, and proves ProjectToSurface lands exactly on the ellipsoid and SurfaceNormal matches a finite-difference gradient to 1e-3. mutation_tests_shield_panel_cut2.py mutates SurfaceNormal three ways (back to normalize(p), back to TransformDirection, and a flattened 0.5 extents factor) and confirms the probe goes red for each, naming the reason. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> 2026-09-18 06:33:38 +02:00			`fileFormatVersion: 2`
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