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>
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Can Narin
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# Tattoo viewer: QuatSkin Lena with the chiefs-mark v3 right-arm sleeve baked in.
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# Saves verification shots to shots-lena/, then hands over to manual control:
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# left-drag orbits the camera around the model, scroll wheel zooms in/out.
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extends Node3D
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const GLB_PATH := "C:/Users/CAN/tinqs-ltd/tattoo-test/lena_clean_uv.glb"
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const BAKED_PATH := "C:/Users/CAN/tinqs-ltd/tattoo-test/baked_lena_body.png"
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const SHOT_DIR := "C:/Users/CAN/tinqs-ltd/tattoo-test/shots-lena/"
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const TAKE_SHOTS := true
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var model: Node3D
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var skel: Skeleton3D
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var cam: Camera3D
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var interactive := false
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var dragging := false
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var orbit_yaw := 0.0
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var orbit_pitch := 0.08
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var orbit_dist := 3.4
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var orbit_target := Vector3(0, 1.0, 0)
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func _ready() -> void:
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DirAccess.make_dir_recursive_absolute(SHOT_DIR)
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var env := Environment.new()
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env.background_mode = Environment.BG_COLOR
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env.background_color = Color(0.12, 0.13, 0.16)
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env.ambient_light_source = Environment.AMBIENT_SOURCE_COLOR
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env.ambient_light_color = Color(0.75, 0.78, 0.85)
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env.ambient_light_energy = 0.7
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env.tonemap_mode = Environment.TONE_MAPPER_FILMIC
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var we := WorldEnvironment.new()
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we.environment = env
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add_child(we)
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var sun := DirectionalLight3D.new()
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sun.rotation_degrees = Vector3(-40, -35, 0)
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sun.light_energy = 1.5
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add_child(sun)
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var fill := DirectionalLight3D.new()
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fill.rotation_degrees = Vector3(-15, 140, 0)
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fill.light_energy = 0.6
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add_child(fill)
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var under := DirectionalLight3D.new()
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under.rotation_degrees = Vector3(35, 0, 0)
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under.light_energy = 0.35
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add_child(under)
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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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push_error("GLB load failed")
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return
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model = doc.generate_scene(state)
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add_child(model)
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var baked := ImageTexture.create_from_image(Image.load_from_file(BAKED_PATH))
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var stack: Array = [model]
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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 and String(n.name).to_lower().contains("lena"):
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var mat := StandardMaterial3D.new()
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mat.roughness = 0.85
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mat.albedo_texture = baked
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mat.cull_mode = BaseMaterial3D.CULL_BACK
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for s in n.mesh.get_surface_count():
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n.set_surface_override_material(s, mat)
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for c in n.get_children():
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stack.push_back(c)
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cam = Camera3D.new()
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cam.fov = 50
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add_child(cam)
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cam.current = true
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if TAKE_SHOTS:
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await _take_shots()
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print("SHOTS_DONE")
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model.rotation.y = 0.0
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interactive = true
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_update_cam()
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func _unhandled_input(event: InputEvent) -> void:
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if not interactive:
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return
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if event is InputEventMouseButton:
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if event.button_index == MOUSE_BUTTON_LEFT:
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dragging = event.pressed
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elif event.pressed and event.button_index == MOUSE_BUTTON_WHEEL_UP:
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orbit_dist = clampf(orbit_dist * 0.90, 0.35, 8.0)
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_update_cam()
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elif event.pressed and event.button_index == MOUSE_BUTTON_WHEEL_DOWN:
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orbit_dist = clampf(orbit_dist / 0.90, 0.35, 8.0)
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_update_cam()
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elif event is InputEventMouseMotion and dragging:
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orbit_yaw -= event.relative.x * 0.008
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orbit_pitch = clampf(orbit_pitch + event.relative.y * 0.008, -1.3, 1.3)
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_update_cam()
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func _update_cam() -> void:
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var dir := Vector3(
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sin(orbit_yaw) * cos(orbit_pitch),
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sin(orbit_pitch),
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cos(orbit_yaw) * cos(orbit_pitch))
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cam.look_at_from_position(orbit_target + dir * orbit_dist, orbit_target)
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func _bone_point(bone: String) -> Vector3:
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return (skel.global_transform * skel.get_bone_global_rest(skel.find_bone(bone)).origin)
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func _limb_mid(a: String, b: String) -> Vector3:
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return (_bone_point(a) + _bone_point(b)) * 0.5
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func _snap(shot_name: String) -> void:
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await get_tree().process_frame
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await get_tree().process_frame
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await RenderingServer.frame_post_draw
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var img := get_viewport().get_texture().get_image()
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img.save_png(SHOT_DIR + shot_name + ".png")
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print("shot saved: ", SHOT_DIR + shot_name + ".png")
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func _take_shots() -> void:
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# full body front / back
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model.rotation.y = 0.0
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cam.look_at_from_position(Vector3(0, 1.1, 3.4), Vector3(0, 1.0, 0))
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await _snap("01_full_front")
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model.rotation.y = PI
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await get_tree().process_frame
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await _snap("02_full_back")
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# right arm: front, outer side, back
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model.rotation.y = 0.0
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await get_tree().process_frame
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var mid_r := _limb_mid("upperarm_r", "hand_r")
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cam.look_at_from_position(mid_r + Vector3(0, 0.12, 1.0), mid_r)
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await _snap("03_arm_r_front")
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cam.look_at_from_position(mid_r + Vector3(-1.0, 0.12, 0.15), mid_r)
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await _snap("04_arm_r_outer")
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model.rotation.y = PI
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await get_tree().process_frame
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var mid_r_back := _limb_mid("upperarm_r", "hand_r")
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mid_r_back.x = -mid_r_back.x
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mid_r_back.z = -mid_r_back.z
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cam.look_at_from_position(mid_r_back + Vector3(0, 0.12, 1.0), mid_r_back)
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await _snap("05_arm_r_back")
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# inner (underside) of the arm — where the elbow bend is concave
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model.rotation.y = 0.0
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await get_tree().process_frame
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cam.look_at_from_position(mid_r + Vector3(0, -0.85, 0.5), mid_r)
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await _snap("06_arm_r_inner")
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# torso closeups
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cam.look_at_from_position(Vector3(0, 1.25, 0.9), Vector3(0, 1.25, 0))
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await _snap("07_chest")
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model.rotation.y = PI
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await get_tree().process_frame
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cam.look_at_from_position(Vector3(0, 1.2, 0.9), Vector3(0, 1.2, 0))
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await _snap("08_back")
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# legs front / outer / back
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model.rotation.y = 0.0
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await get_tree().process_frame
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var leg_r := _limb_mid("thigh_r", "foot_r")
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cam.look_at_from_position(leg_r + Vector3(0, 0.05, 1.1), leg_r)
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await _snap("09_leg_r_front")
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cam.look_at_from_position(leg_r + Vector3(-1.0, 0.05, 0.3), leg_r)
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await _snap("10_leg_r_outer")
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model.rotation.y = PI
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await get_tree().process_frame
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var leg_b := Vector3(-leg_r.x, leg_r.y, -leg_r.z)
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cam.look_at_from_position(leg_b + Vector3(0, 0.05, 1.1), leg_b)
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await _snap("11_legs_back")
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# problem-area closeups: armpit, under-chin, cheek/ear
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model.rotation.y = 0.0
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await get_tree().process_frame
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var pit_r := _bone_point("upperarm_r") + Vector3(-0.02, -0.05, 0)
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cam.look_at_from_position(pit_r + Vector3(-0.12, -0.28, 0.42), pit_r)
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await _snap("12_armpit_r")
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var head_p := _bone_point("Head")
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var chin := head_p + Vector3(0, -0.05, 0.06)
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cam.look_at_from_position(chin + Vector3(0, -0.22, 0.40), chin)
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await _snap("13_under_chin")
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var ear_r := head_p + Vector3(-0.06, 0.04, 0)
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cam.look_at_from_position(ear_r + Vector3(-0.38, 0.02, 0.16), ear_r)
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await _snap("14_ear_cheek_r")
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model.rotation.y = 0.0
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