Tattoo test bed: Quaternius v3-v6 bakes + Lena pipeline (bake, de-mirror, re-UV, viewers)

Session 2026-07-23/24 additions on top of the existing Quaternius bed: - bake_lena.gd: 6-piece bake on QuatSkin Lena (chiefs-mark/iron-spine arms, voyagers/storm-bearer legs, star-eye chest, hearth-warmth back); global-axis wrap frame + 3cm junction blend kill the elbow split line - demirror_lena.gd: tri-level split of mirror-shared limb UVs (arms 100%->0%, legs 99%->5% crotch-only residual) - reuv_lena.gd: Quaternius-style semantic re-UV (16 islands, cylinder limbs + cylinder head/torso with planar caps) + texture transfer; fixes armpit/chin/ cheek planar smears; single 4096 atlas, per-side tattoos native - main_lena / anim_lena viewers (18 UAL clips, U light toggle) + probes + shots Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-07-24 00:47:12 +03:00
commit ce4c4e7d13
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+# Measures left/right UV overlap for arms and legs (mirror-mapping check).
+extends SceneTree
+
+const GLB_PATH := "C:/Users/CAN/tinqs-ltd/tattoo-test/lena_demirrored.glb"
+const GRID := 256
+
+var skel: Skeleton3D
+var uvs: PackedVector2Array
+var vbones: PackedInt32Array
+var vweights
+var bind_bone: PackedInt32Array
+var nverts: int
+var influences: int
+
+func _init() -> void:
+	var doc := GLTFDocument.new()
+	var state := GLTFState.new()
+	if doc.append_from_file(GLB_PATH, state) != OK:
+		quit(1)
+		return
+	var scene := doc.generate_scene(state)
+	var body: Node = null
+	var stack: Array = [scene]
+	while not stack.is_empty():
+		var n: Node = stack.pop_back()
+		if n is Skeleton3D and skel == null:
+			skel = n
+		if (n is MeshInstance3D or n.get_class() == "ImporterMeshInstance3D") \
+				and String(n.name).to_lower().contains("lena"):
+			body = n
+		for c in n.get_children():
+			stack.push_back(c)
+	var mesh = body.mesh
+	if mesh is ImporterMesh:
+		mesh = mesh.get_mesh()
+	var arrays: Array = mesh.surface_get_arrays(0)
+	uvs = arrays[Mesh.ARRAY_TEX_UV]
+	vbones = arrays[Mesh.ARRAY_BONES]
+	vweights = arrays[Mesh.ARRAY_WEIGHTS]
+	nverts = (arrays[Mesh.ARRAY_VERTEX] as PackedVector3Array).size()
+	influences = int(float(vbones.size()) / float(nverts))
+
+	var skin: Skin = body.skin
+	bind_bone = PackedInt32Array()
+	for i in skin.get_bind_count():
+		var b := skin.get_bind_bone(i)
+		if b < 0:
+			b = skel.find_bone(skin.get_bind_name(i))
+		bind_bone.append(b)
+
+	_overlap("ARM", ["upperarm_r", "lowerarm_r", "hand_r"], ["upperarm_l", "lowerarm_l", "hand_l"])
+	_overlap("LEG", ["thigh_r", "calf_r", "foot_r"], ["thigh_l", "calf_l", "foot_l"])
+	quit()
+
+func _mask(bones: Array) -> PackedByteArray:
+	var ids := {}
+	for bn in bones:
+		ids[skel.find_bone(bn)] = true
+	var binds := {}
+	for i in bind_bone.size():
+		if ids.has(bind_bone[i]):
+			binds[i] = true
+	var mask := PackedByteArray()
+	mask.resize(GRID * GRID)
+	for v in nverts:
+		var w := 0.0
+		for k in influences:
+			if binds.has(vbones[v * influences + k]):
+				w += vweights[v * influences + k]
+		if w > 0.3:
+			var gx := clampi(int(uvs[v].x * GRID), 0, GRID - 1)
+			var gy := clampi(int(uvs[v].y * GRID), 0, GRID - 1)
+			mask[gy * GRID + gx] = 1
+	return mask
+
+func _overlap(tag: String, bones_r: Array, bones_l: Array) -> void:
+	var r := _mask(bones_r)
+	var l := _mask(bones_l)
+	var cr := 0
+	var ov := 0
+	for i in GRID * GRID:
+		if r[i] == 1:
+			cr += 1
+			if l[i] == 1:
+				ov += 1
+	print("%s UV overlap: %d/%d cells (%.0f%%)" % [tag, ov, cr, 100.0 * ov / maxf(cr, 1)])