67 lines
2.2 KiB
GDScript
67 lines
2.2 KiB
GDScript
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# Color signature of Lena's painted bra vs bare skin (for a fabric-skip predicate).
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extends SceneTree
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const GLB_PATH := "C:/Users/CAN/tinqs-ltd/ariki-game/assets/quaternius/derived-bodies/Ariki_Female_QuatSkin.glb"
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func _init() -> void:
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var doc := GLTFDocument.new()
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var state := GLTFState.new()
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if doc.append_from_file(GLB_PATH, state) != OK:
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quit(1)
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return
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var scene := doc.generate_scene(state)
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var skel: Skeleton3D = null
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var body: Node = null
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var stack: Array = [scene]
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while not stack.is_empty():
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var n: Node = stack.pop_back()
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if n is Skeleton3D and skel == null:
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skel = n
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if (n is MeshInstance3D or n.get_class() == "ImporterMeshInstance3D") \
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and String(n.name).to_lower().contains("lena"):
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body = n
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for c in n.get_children():
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stack.push_back(c)
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var mesh = body.mesh
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if mesh is ImporterMesh:
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mesh = mesh.get_mesh()
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var arrays: Array = mesh.surface_get_arrays(0)
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var verts: PackedVector3Array = arrays[Mesh.ARRAY_VERTEX]
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var uvs: PackedVector2Array = arrays[Mesh.ARRAY_TEX_UV]
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var normals: PackedVector3Array = arrays[Mesh.ARRAY_NORMAL]
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var mat: Material = mesh.surface_get_material(0)
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var img: Image = (mat as BaseMaterial3D).albedo_texture.get_image()
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img.clear_mipmaps()
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img.convert(Image.FORMAT_RGBA8)
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var tw := img.get_width()
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var th := img.get_height()
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# bands: [label, ymin, ymax] — front-facing, near body midline (|x|<0.15)
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for band in [["bra front", 1.16, 1.32], ["belly skin", 0.98, 1.07],
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["upper chest", 1.34, 1.40], ["hip underwear", 0.82, 0.90],
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["thigh skin", 0.55, 0.75]]:
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var sr := 0.0
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var sg := 0.0
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var sb := 0.0
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var cnt := 0
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var rb_min := 1.0
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var rb_max := -1.0
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for v in verts.size():
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var p := verts[v]
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if p.y < band[1] or p.y > band[2] or absf(p.x) > 0.15 or normals[v].z < 0.25:
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continue
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var px := clampi(int(uvs[v].x * tw), 0, tw - 1)
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var py := clampi(int(uvs[v].y * th), 0, th - 1)
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var c := img.get_pixel(px, py)
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sr += c.r
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sg += c.g
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sb += c.b
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var rb := (c.r - c.b) / maxf(c.r, 0.001)
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rb_min = minf(rb_min, rb)
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rb_max = maxf(rb_max, rb)
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cnt += 1
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if cnt > 0:
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print("%s: n=%d avg RGB (%.3f, %.3f, %.3f) (r-b)/r range %.3f..%.3f" %
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[band[0], cnt, sr / cnt, sg / cnt, sb / cnt, rb_min, rb_max])
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quit()
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