feat(win): T-WIN-005 VRM 加载 + humanoid 骨骼名映射
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extends TestCase
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## T-WIN-005：VRM 加载与 humanoid 骨骼映射
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##
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## 分两部分：
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## 1. 纯逻辑：HumanoidMap 对三类命名规范的识别（总是运行）
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## 2. 真实模型：加载真实 .vrm 并检查绑定结果（找不到模型文件时跳过）
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##
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## 真实模型不入库（许可证原因），由开发者放在 _scratch/sample.vrm，
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## 或通过 --vrm=<路径> 命令行参数指定。
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const HumanoidMap = preload("res://src/model/humanoid_map.gd")
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const VrmLoader = preload("res://src/model/vrm_loader.gd")
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const CANDIDATE_PATHS := [
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"res://_scratch/sample.vrm",
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"user://models/sample.vrm",
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]
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func _find_model_path() -> String:
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for path in CANDIDATE_PATHS:
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if FileAccess.file_exists(path):
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return path
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for arg in OS.get_cmdline_user_args():
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if arg.begins_with("--vrm="):
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var path := arg.substr(6)
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if FileAccess.file_exists(path):
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return path
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return ""
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# ---------------- 纯逻辑：命名规范识别 ----------------
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func test_vroid_naming_is_recognized() -> void:
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var names := PackedStringArray([
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"J_Bip_C_Hips", "J_Bip_C_Spine", "J_Bip_C_Chest", "J_Bip_C_UpperChest",
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"J_Bip_C_Neck", "J_Bip_C_Head",
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"J_Bip_L_Shoulder", "J_Bip_L_UpperArm", "J_Bip_L_LowerArm", "J_Bip_L_Hand",
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"J_Bip_R_Shoulder", "J_Bip_R_UpperArm", "J_Bip_R_LowerArm", "J_Bip_R_Hand",
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"J_Bip_L_UpperLeg", "J_Bip_L_LowerLeg", "J_Bip_L_Foot", "J_Bip_L_ToeBase",
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"J_Bip_R_UpperLeg", "J_Bip_R_LowerLeg", "J_Bip_R_Foot", "J_Bip_R_ToeBase",
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])
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var matched := HumanoidMap.match_bones(names)
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eq(matched.size(), HumanoidMap.HUMANOID_BONES.size(), "VRoid 命名全部 22 根骨骼均被识别")
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eq(int(matched.get("hips", -1)), 0, "hips 命中 J_Bip_C_Hips")
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eq(int(matched.get("leftUpperArm", -1)), 7, "leftUpperArm 命中 J_Bip_L_UpperArm")
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eq(int(matched.get("leftLowerLeg", -1)), 15, "leftLowerLeg 命中 J_Bip_L_LowerLeg")
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eq(int(matched.get("rightToes", -1)), 21, "rightToes 命中 J_Bip_R_ToeBase")
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almost(HumanoidMap.coverage(matched), 1.0, 1e-6, "覆盖率 100%")
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func test_vrm_0x_generic_naming_is_recognized() -> void:
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var names := PackedStringArray([
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"Hips", "Spine", "Chest", "Neck", "Head",
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"LeftShoulder", "LeftArm", "LeftForeArm", "LeftHand",
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"RightShoulder", "RightArm", "RightForeArm", "RightHand",
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"LeftUpLeg", "LeftLeg", "LeftFoot", "LeftToeBase",
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"RightUpLeg", "RightLeg", "RightFoot", "RightToeBase",
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])
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var matched := HumanoidMap.match_bones(names)
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eq(int(matched.get("hips", -1)), 0, "hips 命中 Hips")
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eq(int(matched.get("leftUpperArm", -1)), 6, "leftUpperArm 命中 LeftArm")
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eq(int(matched.get("leftLowerArm", -1)), 7, "leftLowerArm 命中 LeftForeArm")
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eq(int(matched.get("leftUpperLeg", -1)), 13, "leftUpperLeg 命中 LeftUpLeg")
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eq(int(matched.get("leftLowerLeg", -1)), 14, "leftLowerLeg 命中 LeftLeg")
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eq(int(matched.get("leftToes", -1)), 16, "leftToes 命中 LeftToeBase")
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func test_mixamo_naming_is_recognized() -> void:
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var names := PackedStringArray([
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"mixamorig:Hips", "mixamorig:Spine", "mixamorig:Spine1", "mixamorig:Neck", "mixamorig:Head",
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"mixamorig:LeftShoulder", "mixamorig:LeftArm", "mixamorig:LeftForeArm", "mixamorig:LeftHand",
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"mixamorig:RightShoulder", "mixamorig:RightArm", "mixamorig:RightForeArm", "mixamorig:RightHand",
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"mixamorig:LeftUpLeg", "mixamorig:LeftLeg", "mixamorig:LeftFoot", "mixamorig:LeftToeBase",
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"mixamorig:RightUpLeg", "mixamorig:RightLeg", "mixamorig:RightFoot", "mixamorig:RightToeBase",
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])
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var matched := HumanoidMap.match_bones(names)
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eq(int(matched.get("leftUpperArm", -1)), 6, "Mixamo 前缀被剥离，leftUpperArm 命中 LeftArm")
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eq(int(matched.get("rightUpperLeg", -1)), 17, "rightUpperLeg 命中 RightUpLeg")
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func test_vroid_helper_bones_do_not_shadow_real_bones() -> void:
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# VRoid 的扭转辅助骨：J_Aim_L_UpperLeg 等。若错误地剥离 j_aim 前缀，
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# 它会与真正的 J_Bip_L_UpperLeg 撞名并把动作驱动到错误的骨骼上。
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var names := PackedStringArray([
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"J_Bip_C_Hips",
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"J_Aim_L_UpperLeg", "J_Roll_L_UpperLeg", "J_Sec_L_TopsUpperLegBack",
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"J_Bip_L_UpperLeg",
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"J_Aim_R_UpperLeg", "J_Bip_R_UpperLeg",
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])
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var matched := HumanoidMap.match_bones(names)
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eq(int(matched.get("leftUpperLeg", -1)), 4, "leftUpperLeg 命中真正的 J_Bip_L_UpperLeg，而非 J_Aim/J_Roll")
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eq(int(matched.get("rightUpperLeg", -1)), 6, "rightUpperLeg 命中 J_Bip_R_UpperLeg")
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func test_unmapped_bones_are_reported() -> void:
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var names := PackedStringArray(["Hips", "Neck"])
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var matched := HumanoidMap.match_bones(names)
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var missing := HumanoidMap.missing_bones(matched)
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ok(missing.size() > 0, "缺失骨骼被列出", "缺失 %d 根" % missing.size())
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ok(missing.has("leftHand"), "leftHand 被列为缺失")
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is_false(missing.has("hips"), "已命中的 hips 不出现在缺失列表")
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func test_coverage_reflects_match_ratio() -> void:
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var full := HumanoidMap.match_bones(PackedStringArray(HumanoidMap.HUMANOID_BONES))
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var partial := HumanoidMap.match_bones(PackedStringArray(["Hips", "Neck", "Head"]))
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almost(HumanoidMap.coverage(full), 1.0, 1e-6, "全命中覆盖率 1.0")
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ok(HumanoidMap.coverage(partial) < 1.0, "部分命中覆盖率小于 1")
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ok(HumanoidMap.coverage(partial) > 0.0, "部分命中覆盖率大于 0")
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# ---------------- 真实模型 ----------------
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func test_real_vrm_loads_with_skeleton_and_bones() -> void:
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var path := _find_model_path()
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if path == "":
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skip("真实 VRM 加载", "未找到模型文件（放置于 _scratch/sample.vrm 或传 --vrm=<路径>）")
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return
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var model: VrmLoader.VrmModel = VrmLoader.load_from_file(path)
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not_null(model, "加载返回结果")
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if not model.available:
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ok(false, "模型加载失败", model.error)
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return
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is_true(model.available, "模型可用")
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eq(model.error, "", "无错误信息")
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not_null(model.root, "生成场景根节点")
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not_null(model.skeleton, "找到 Skeleton3D")
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ok(model.bone_count > 20, "骨骼数量合理", "实际 %d" % model.bone_count)
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ok(model.mesh_count > 0, "含网格", "实际 %d" % model.mesh_count)
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is_true(model.is_vrm, "识别为 VRM（含 VRM 扩展）")
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ne(model.vrm_version, "", "读到 VRM 版本")
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print(" → 模型：%s，VRM 版本 %s，%d 骨骼 / %d 网格，humanoid 覆盖率 %.0f%%" % [
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path, model.vrm_version, model.bone_count, model.mesh_count, model.coverage() * 100.0,
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])
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ok(model.coverage() >= 0.8, "humanoid 骨骼覆盖率 ≥ 80%", "实际 %.0f%%，缺失：%s" % [
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model.coverage() * 100.0, ", ".join(model.missing_bones()),
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])
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is_true(model.is_drivable(), "具备驱动所需的最小骨骼集合", "缺失：%s" % ", ".join(model.missing_bones()))
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# 抽查若干关键骨骼确实指向名字匹配的骨骼
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var checks := {
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"hips": "Hips",
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"leftHand": "Hand",
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"rightUpperLeg": "UpperLeg",
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}
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for canonical in checks:
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var index := model.bone_index(canonical)
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ok(index >= 0, "%s 已映射" % canonical)
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if index >= 0:
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var bone_name := model.skeleton.get_bone_name(index)
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contains(bone_name.to_lower(), str(checks[canonical]).to_lower(), "%s 映射到 %s" % [canonical, bone_name])
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# 辅助骨不得被选用
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is_false(bone_name.begins_with("J_Aim"), "%s 未误映射到 J_Aim 辅助骨（实际 %s）" % [canonical, bone_name])
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is_false(bone_name.begins_with("J_Roll"), "%s 未误映射到 J_Roll 辅助骨（实际 %s）" % [canonical, bone_name])
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model.dispose()
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is_null(model.root, "dispose 后释放场景")
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func test_missing_file_reports_clear_error() -> void:
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var model: VrmLoader.VrmModel = VrmLoader.load_from_file("res://_scratch/definitely-not-here.vrm")
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is_false(model.available, "不存在的文件标记为不可用")
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contains(model.error, "不存在", "错误信息说明文件不存在")
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func test_vrm_version_detection_from_json() -> void:
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var v1 := VrmLoader.detect_vrm_version({"extensions": {"VRMC_vrm": {"specVersion": "1.0"}}})
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is_true(bool(v1["is_vrm"]), "VRMC_vrm 识别为 VRM")
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eq(str(v1["version"]), "1.0", "VRM 1.0 版本号正确")
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var v0 := VrmLoader.detect_vrm_version({"extensions": {"VRM": {"specVersion": "0.0", "exporterVersion": "0.79"}}})
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is_true(bool(v0["is_vrm"]), "VRM 识别为 VRM")
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eq(str(v0["version"]), "0.0", "VRM 0.x 版本号正确")
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var plain := VrmLoader.detect_vrm_version({"extensions": {}})
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is_false(bool(plain["is_vrm"]), "无 VRM 扩展的普通 glTF 不识别为 VRM")
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eq(str(plain["version"]), "", "普通 glTF 版本号为空")
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