update

client/core/domain/Project.h

@@ -53,6 +53,12 @@ public:
         QVector<QPointF> polygonLocal;
         // 从背景中抠洞的位置：固定在创建时的 world 坐标，不随实体移动
         QVector<QPointF> cutoutPolygonWorld;
+        // 背景空缺标识：用于项目树节点和交互，空则按 id 生成默认值
+        QString blackholeId;
+        // 背景空缺可见性：与实体可见性轨道解耦，控制背景空缺是否显示
+        bool blackholeVisible = true;
+        // 背景空缺修复方案：copy_background / use_original_background / model_inpaint（预留）
+        QString blackholeResolvedBy;
         QPointF originWorld;
         int depth = 0;              // 0..255
         QString imagePath;          // 相对路径，例如 "assets/entities/entity-1.png"

client/core/eval/ProjectEvaluator.cpp

@@ -25,6 +25,16 @@ QPointF sampledOriginForEntity(const core::Project::Entity& e,
     return core::sampleLocation(e.locationKeys, localFrame, e.originWorld, core::KeyInterpolation::Linear);
 }
 
+QPointF sampledRelativeForEntity(const core::Project::Entity& e,
+                                 const core::Project::AnimationClip* clipOrNull,
+                                 int localFrame) {
+    if (clipOrNull && clipOrNull->entityLocationKeys.contains(e.id)) {
+        const auto& keys = clipOrNull->entityLocationKeys.value(e.id);
+        return core::sampleLocation(keys, localFrame, e.parentOffsetWorld, core::KeyInterpolation::Linear);
+    }
+    return core::sampleLocation(e.locationKeys, localFrame, e.parentOffsetWorld, core::KeyInterpolation::Linear);
+}
+
 QPointF sampledOriginForTool(const core::Project::Tool& t,
                              const core::Project::AnimationClip* clipOrNull,
                              int localFrame) {
@@ -35,6 +45,16 @@ QPointF sampledOriginForTool(const core::Project::Tool& t,
     return core::sampleLocation(t.locationKeys, localFrame, t.originWorld, core::KeyInterpolation::Linear);
 }
 
+QPointF sampledRelativeForTool(const core::Project::Tool& t,
+                               const core::Project::AnimationClip* clipOrNull,
+                               int localFrame) {
+    if (clipOrNull && clipOrNull->toolLocationKeys.contains(t.id)) {
+        const auto& keys = clipOrNull->toolLocationKeys.value(t.id);
+        return core::sampleLocation(keys, localFrame, t.parentOffsetWorld, core::KeyInterpolation::Linear);
+    }
+    return core::sampleLocation(t.locationKeys, localFrame, t.parentOffsetWorld, core::KeyInterpolation::Linear);
+}
+
 struct VisKey {
     int frame = 0;
     bool value = true;
@@ -227,24 +247,24 @@ ResolvedProjectFrame evaluateAtFrame(const core::Project& project, int frame, in
 
         const NodeRef r = index.value(id);
         QString parentId;
-        QPointF off;
         QPointF selfSampled;
         if (r.kind == NodeRef::Kind::Entity) {
             const auto& e = ents[r.index];
             parentId = e.parentId;
-            off = e.parentOffsetWorld;
             selfSampled = sampledOriginForEntity(e, clip, localFrame);
         } else {
             const auto& t = tools[r.index];
             parentId = t.parentId;
-            off = t.parentOffsetWorld;
             selfSampled = sampledOriginForTool(t, clip, localFrame);
         }
 
         QPointF outO = selfSampled;
         if (!parentId.isEmpty() && index.contains(parentId)) {
             const QPointF po = resolve(parentId);
-            outO = po + off;
+            const QPointF rel = (r.kind == NodeRef::Kind::Entity)
+                                    ? sampledRelativeForEntity(ents[r.index], clip, localFrame)
+                                    : sampledRelativeForTool(tools[r.index], clip, localFrame);
+            outO = po + rel;
         }
 
         resolving.insert(id, false);

client/core/library/EntityJson.cpp

@@ -67,6 +67,9 @@ QJsonObject entityToJson(const core::Project::Entity& e) {
     o.insert(QStringLiteral("visible"), e.visible);
     o.insert(QStringLiteral("polygonLocal"), pointsToJson(e.polygonLocal));
     o.insert(QStringLiteral("cutoutPolygonWorld"), pointsToJson(e.cutoutPolygonWorld));
+    o.insert(QStringLiteral("blackholeId"), e.blackholeId);
+    o.insert(QStringLiteral("blackholeVisible"), e.blackholeVisible);
+    o.insert(QStringLiteral("blackholeResolvedBy"), e.blackholeResolvedBy);
     o.insert(QStringLiteral("originWorld"), pointToJson(e.originWorld));
     o.insert(QStringLiteral("depth"), e.depth);
     o.insert(QStringLiteral("imagePath"), e.imagePath);
@@ -152,6 +155,12 @@ bool entityFromJson(const QJsonObject& o, core::Project::Entity& out) {
         // cutout 允许不存在：按空处理
         e.cutoutPolygonWorld.clear();
     }
+    e.blackholeId = o.value(QStringLiteral("blackholeId")).toString();
+    if (e.blackholeId.isEmpty() && !e.id.isEmpty()) {
+        e.blackholeId = QStringLiteral("blackhole-%1").arg(e.id);
+    }
+    e.blackholeVisible = o.value(QStringLiteral("blackholeVisible")).toBool(true);
+    e.blackholeResolvedBy = o.value(QStringLiteral("blackholeResolvedBy")).toString();
     {
         QPointF p;
         if (!pointFromJson(o.value(QStringLiteral("originWorld")), p)) {

client/core/persistence/EntityPayloadBinary.cpp

@@ -260,6 +260,13 @@ public:
             ds << qint32(k.frame) << bool(k.value);
         }
         writeIntroBlock(ds, entity);
+        // v8/v9：黑洞元数据（与实体可见性解耦）
+        ds << bool(entity.blackholeVisible);
+        const QString holeId = entity.blackholeId.isEmpty()
+                                   ? QStringLiteral("blackhole-%1").arg(entity.id)
+                                   : entity.blackholeId;
+        ds << holeId;
+        ds << entity.blackholeResolvedBy;
     }
 
     bool readBody(QDataStream& ds) override {
@@ -315,6 +322,16 @@ public:
         if (!readIntroBlock(ds, tmp.intro)) {
             return false;
         }
+        bool holeVisible = true;
+        QString holeId;
+        QString resolvedBy;
+        ds >> holeVisible >> holeId >> resolvedBy;
+        if (ds.status() != QDataStream::Ok) {
+            return false;
+        }
+        tmp.blackholeVisible = holeVisible;
+        tmp.blackholeId = holeId.isEmpty() ? QStringLiteral("blackhole-%1").arg(tmp.id) : holeId;
+        tmp.blackholeResolvedBy = resolvedBy;
         *m_dst = std::move(tmp);
         return true;
     }
@@ -371,7 +388,7 @@ bool EntityPayloadBinary::load(const QString& absolutePath, Project::Entity& ent
     if (ds.status() != QDataStream::Ok || magic != kMagicPayload) {
         return false;
     }
-    if (ver != 1 && ver != 2 && ver != 3 && ver != 4 && ver != 5 && ver != 6 && ver != 7) {
+    if (ver != 1 && ver != 2 && ver != 3 && ver != 4 && ver != 5 && ver != 6 && ver != 7 && ver != 8 && ver != 9) {
         return false;
     }
     Project::Entity tmp;
@@ -442,6 +459,30 @@ bool EntityPayloadBinary::load(const QString& absolutePath, Project::Entity& ent
                 return false;
             }
         }
+        if (ver >= 8) {
+            bool holeVisible = true;
+            QString holeId;
+            ds >> holeVisible >> holeId;
+            if (ds.status() != QDataStream::Ok) {
+                return false;
+            }
+            tmp.blackholeVisible = holeVisible;
+            tmp.blackholeId = holeId.isEmpty() ? QStringLiteral("blackhole-%1").arg(tmp.id) : holeId;
+            if (ver >= 9) {
+                QString resolvedBy;
+                ds >> resolvedBy;
+                if (ds.status() != QDataStream::Ok) {
+                    return false;
+                }
+                tmp.blackholeResolvedBy = resolvedBy;
+            } else {
+                tmp.blackholeResolvedBy = QStringLiteral("pending");
+            }
+        } else {
+            tmp.blackholeVisible = true;
+            tmp.blackholeId = QStringLiteral("blackhole-%1").arg(tmp.id);
+            tmp.blackholeResolvedBy = QStringLiteral("pending");
+        }
     } else {
         tmp.displayName.clear();
         tmp.userScale = 1.0;
@@ -449,6 +490,9 @@ bool EntityPayloadBinary::load(const QString& absolutePath, Project::Entity& ent
         tmp.parentId.clear();
         tmp.parentOffsetWorld = QPointF();
         tmp.visibilityKeys.clear();
+        tmp.blackholeVisible = true;
+        tmp.blackholeId = QStringLiteral("blackhole-%1").arg(tmp.id);
+        tmp.blackholeResolvedBy = QStringLiteral("pending");
     }
     entity = std::move(tmp);
     return true;

client/core/persistence/EntityPayloadBinary.h

@@ -12,7 +12,7 @@ namespace core {
 class EntityPayloadBinary {
 public:
     static constexpr quint32 kMagicPayload = 0x48464550;  // 'HFEP'
-    static constexpr quint32 kPayloadVersion = 7;  // v7：追加 visibilityKeys
+    static constexpr quint32 kPayloadVersion = 9;  // v9：追加 blackholeResolvedBy
 
     // 旧版独立动画文件（仍用于打开 v1 项目时合并）
     static constexpr quint32 kMagicLegacyAnim = 0x48465441;  // 'HFTA'

client/core/workspace/ProjectWorkspace.cpp

@@ -1,5 +1,6 @@
 #include "workspace/ProjectWorkspace.h"
 #include "animation/AnimationSampling.h"
+#include "eval/ProjectEvaluator.h"
 #include "persistence/EntityPayloadBinary.h"
 #include "depth/DepthService.h"
 #include "net/ModelServerClient.h"
@@ -13,9 +14,14 @@
 #include <QJsonObject>
 #include <QJsonValue>
 #include <QImage>
+#include <QImageWriter>
+#include <QImageReader>
 #include <QUrl>
 #include <QHash>
 #include <QSet>
+#include <QPainter>
+#include <QPainterPath>
+#include <QPolygonF>
 
 #include <cmath>
 
@@ -67,6 +73,24 @@ QPointF entityPolygonCentroidWorld(const Project::Entity& e, int frame, double s
     return polygonCentroidFromWorldPoints(w);
 }
 
+QPointF resolvedOriginAtFrame(const Project& project, const QString& id, int frame) {
+    if (id.isEmpty()) {
+        return QPointF();
+    }
+    const auto rf = core::eval::evaluateAtFrame(project, frame, 10);
+    for (const auto& re : rf.entities) {
+        if (re.entity.id == id) {
+            return re.entity.originWorld;
+        }
+    }
+    for (const auto& rt : rf.tools) {
+        if (rt.tool.id == id) {
+            return rt.tool.originWorld;
+        }
+    }
+    return QPointF();
+}
+
 
 QString ensureDir(const QString& path) {
     QDir dir(path);
@@ -632,6 +656,10 @@ bool ProjectWorkspace::writeIndexJson() {
     if (!m_projectDir.isEmpty() && !syncEntityPayloadsToDisk()) {
         return false;
     }
+    return writeIndexJsonWithoutPayloadSync();
+}
+
+bool ProjectWorkspace::writeIndexJsonWithoutPayloadSync() {
     const auto root = projectToJson(m_project);
     QJsonDocument doc(root);
 
@@ -1153,6 +1181,9 @@ bool ProjectWorkspace::entityStubFromJsonV2(const QJsonObject& o, Project::Entit
     out.id = o.value("id").toString();
     out.entityPayloadPath = asOptionalRelativeUnderProject(o.value("payload").toString());
     out.visible = o.value("visible").toBool(true);
+    out.blackholeVisible = true;
+    out.blackholeId = out.id.isEmpty() ? QString() : QStringLiteral("blackhole-%1").arg(out.id);
+    out.blackholeResolvedBy = QStringLiteral("pending");
     if (out.id.isEmpty() || out.entityPayloadPath.isEmpty()) {
         return false;
     }
@@ -1238,6 +1269,9 @@ bool ProjectWorkspace::entityFromJsonV1(const QJsonObject& o, Project::Entity& o
             out.cutoutPolygonWorld.push_back(out.originWorld + lp);
         }
     }
+    out.blackholeVisible = true;
+    out.blackholeId = QStringLiteral("blackhole-%1").arg(out.id);
+    out.blackholeResolvedBy = QStringLiteral("pending");
 
     // 旧版：关键帧内嵌在 project.json；若存在对应 .anim 文件，打开项目时会被二进制数据覆盖。
     const auto lk = o.value("locationKeys");
@@ -1419,6 +1453,27 @@ bool ProjectWorkspace::syncEntityPayloadsToDisk() {
     return true;
 }
 
+bool ProjectWorkspace::saveSingleEntityPayload(Project::Entity& entity) {
+    if (m_projectDir.isEmpty()) {
+        return false;
+    }
+    if (ensureEntitiesDir().isEmpty()) {
+        return false;
+    }
+    entity.legacyAnimSidecarPath.clear();
+    if (entity.entityPayloadPath.isEmpty()) {
+        entity.entityPayloadPath =
+            QString::fromUtf8(kAssetsDirName) + QStringLiteral("/entities/") + entity.id + QStringLiteral(".hfe");
+    }
+    const QString rel = asRelativeUnderProject(entity.entityPayloadPath);
+    if (rel.isEmpty()) {
+        return false;
+    }
+    entity.entityPayloadPath = rel;
+    const QString abs = QDir(m_projectDir).filePath(rel);
+    return EntityPayloadBinary::save(abs, entity);
+}
+
 bool ProjectWorkspace::hydrateEntityPayloadsFromDisk() {
     if (m_projectDir.isEmpty()) {
         return true;
@@ -1602,6 +1657,12 @@ bool ProjectWorkspace::addEntity(const Project::Entity& entity, const QImage& im
         e.entityPayloadPath =
             QString::fromUtf8(kAssetsDirName) + QStringLiteral("/entities/") + e.id + QStringLiteral(".hfe");
     }
+    if (e.blackholeId.isEmpty()) {
+        e.blackholeId = QStringLiteral("blackhole-%1").arg(e.id);
+    }
+    if (e.blackholeResolvedBy.isEmpty()) {
+        e.blackholeResolvedBy = QStringLiteral("pending");
+    }
 
     auto ents = m_project.entities();
     ents.push_back(e);
@@ -1629,6 +1690,185 @@ bool ProjectWorkspace::setEntityVisible(const QString& id, bool on) {
     return applyEntities(ents, true, on ? QStringLiteral("显示实体") : QStringLiteral("隐藏实体"));
 }
 
+bool ProjectWorkspace::setEntityBlackholeVisible(const QString& id, bool on) {
+    if (m_projectDir.isEmpty() || id.isEmpty()) {
+        return false;
+    }
+    const auto before = m_project.entities();
+    auto ents = before;
+    bool found = false;
+    bool changed = false;
+    int hit = -1;
+    for (auto& e : ents) {
+        if (e.id != id) {
+            continue;
+        }
+        found = true;
+        hit = static_cast<int>(&e - ents.data());
+        if (e.blackholeVisible != on) {
+            e.blackholeVisible = on;
+            changed = true;
+        }
+        if (e.blackholeId.isEmpty()) {
+            e.blackholeId = QStringLiteral("blackhole-%1").arg(e.id);
+            changed = true;
+        }
+        if (on) {
+            if (e.blackholeResolvedBy.isEmpty()) {
+                e.blackholeResolvedBy = QStringLiteral("pending");
+                changed = true;
+            }
+        }
+        break;
+    }
+    if (!found) {
+        return false;
+    }
+    if (!changed || hit < 0) {
+        return true;
+    }
+    m_project.setEntities(ents);
+    if (!saveSingleEntityPayload(ents[hit]) || !writeIndexJsonWithoutPayloadSync()) {
+        m_project.setEntities(before);
+        return false;
+    }
+    Operation op;
+    op.type = Operation::Type::SetEntities;
+    op.label = on ? QStringLiteral("显示黑洞") : QStringLiteral("隐藏黑洞");
+    op.beforeEntities = before;
+    op.afterEntities = ents;
+    pushOperation(op);
+    m_redoStack.clear();
+    return true;
+}
+
+bool ProjectWorkspace::resolveBlackholeByUseOriginalBackground(const QString& id) {
+    if (m_projectDir.isEmpty() || id.isEmpty()) {
+        return false;
+    }
+    const auto before = m_project.entities();
+    auto ents = before;
+    int hit = -1;
+    for (int i = 0; i < ents.size(); ++i) {
+        if (ents[i].id == id) {
+            hit = i;
+            break;
+        }
+    }
+    if (hit < 0) {
+        return false;
+    }
+    auto& e = ents[hit];
+    e.blackholeVisible = false;
+    if (e.blackholeId.isEmpty()) {
+        e.blackholeId = QStringLiteral("blackhole-%1").arg(e.id);
+    }
+    e.blackholeResolvedBy = QStringLiteral("use_original_background");
+
+    m_project.setEntities(ents);
+    if (!saveSingleEntityPayload(ents[hit]) || !writeIndexJsonWithoutPayloadSync()) {
+        m_project.setEntities(before);
+        return false;
+    }
+    Operation op;
+    op.type = Operation::Type::SetEntities;
+    op.label = QStringLiteral("黑洞使用原始背景");
+    op.beforeEntities = before;
+    op.afterEntities = ents;
+    pushOperation(op);
+    m_redoStack.clear();
+    return true;
+}
+
+bool ProjectWorkspace::resolveBlackholeByCopyBackground(const QString& id, const QPoint& sourceOffsetPx,
+                                                        bool hideBlackholeAfterFill) {
+    if (m_projectDir.isEmpty() || id.isEmpty()) {
+        return false;
+    }
+    const QString bgAbs = backgroundAbsolutePath();
+    if (bgAbs.isEmpty() || !QFileInfo::exists(bgAbs)) {
+        return false;
+    }
+
+    auto ents = m_project.entities();
+    int hit = -1;
+    for (int i = 0; i < ents.size(); ++i) {
+        if (ents[i].id == id) {
+            hit = i;
+            break;
+        }
+    }
+    if (hit < 0) {
+        return false;
+    }
+    const auto& ent = ents[hit];
+    if (ent.cutoutPolygonWorld.size() < 3) {
+        return false;
+    }
+
+    QImage bg(bgAbs);
+    if (bg.isNull()) {
+        return false;
+    }
+    if (bg.format() != QImage::Format_ARGB32_Premultiplied) {
+        bg = bg.convertToFormat(QImage::Format_ARGB32_Premultiplied);
+    }
+    const QImage srcSnapshot = bg;
+
+    QPainterPath holePath;
+    holePath.addPolygon(QPolygonF(ent.cutoutPolygonWorld));
+    holePath.closeSubpath();
+    const QRect targetRect = holePath.boundingRect().toAlignedRect().intersected(QRect(QPoint(0, 0), bg.size()));
+    if (!targetRect.isValid() || targetRect.width() <= 0 || targetRect.height() <= 0) {
+        return false;
+    }
+
+    QRect srcRect(targetRect.topLeft() + sourceOffsetPx, targetRect.size());
+    if (srcRect.left() < 0) srcRect.moveLeft(0);
+    if (srcRect.top() < 0) srcRect.moveTop(0);
+    if (srcRect.right() >= bg.width()) srcRect.moveRight(bg.width() - 1);
+    if (srcRect.bottom() >= bg.height()) srcRect.moveBottom(bg.height() - 1);
+    srcRect = srcRect.intersected(QRect(QPoint(0, 0), bg.size()));
+    if (srcRect.width() != targetRect.width() || srcRect.height() != targetRect.height()) {
+        return false;
+    }
+
+    {
+        QPainter p(&bg);
+        p.setRenderHint(QPainter::Antialiasing, true);
+        p.setClipPath(holePath);
+        p.drawImage(targetRect.topLeft(), srcSnapshot, srcRect);
+        p.end();
+    }
+    QImageWriter writer(bgAbs);
+    writer.setFormat("png");
+    writer.setCompression(1);
+    if (!writer.write(bg)) {
+        return false;
+    }
+
+    const auto before = m_project.entities();
+    ents[hit].blackholeVisible = hideBlackholeAfterFill ? false : ents[hit].blackholeVisible;
+    if (ents[hit].blackholeId.isEmpty()) {
+        ents[hit].blackholeId = QStringLiteral("blackhole-%1").arg(ents[hit].id);
+    }
+    ents[hit].blackholeResolvedBy = QStringLiteral("copy_background");
+
+    m_project.setEntities(ents);
+    if (!saveSingleEntityPayload(ents[hit]) || !writeIndexJsonWithoutPayloadSync()) {
+        m_project.setEntities(before);
+        return false;
+    }
+    Operation op;
+    op.type = Operation::Type::SetEntities;
+    op.label = QStringLiteral("黑洞复制填充");
+    op.beforeEntities = before;
+    op.afterEntities = ents;
+    pushOperation(op);
+    m_redoStack.clear();
+    return true;
+}
+
 bool ProjectWorkspace::setEntityVisibilityKey(const QString& id, int frame, bool visible) {
     if (m_projectDir.isEmpty() || id.isEmpty() || frame < 0) {
         return false;
@@ -1804,12 +2044,78 @@ bool ProjectWorkspace::setEntityParent(const QString& id, const QString& parentI
     if (!parentId.isEmpty() && !ids.contains(parentId)) {
         return false;
     }
+    const int frameStart = std::max(0, m_project.frameStart());
+
+    // 父子关系切换时：需要把 location 关键帧在“绝对世界坐标”与“相对父对象偏移”之间互转，
+    // 否则同一组 key 会被用不同坐标系解释，造成跳跃。
+    auto fetchOrigin = [](const core::eval::ResolvedProjectFrame& rf, const QString& anyId) -> QPointF {
+        if (anyId.isEmpty()) return QPointF();
+        for (const auto& re : rf.entities) {
+            if (re.entity.id == anyId) return re.entity.originWorld;
+        }
+        for (const auto& rt : rf.tools) {
+            if (rt.tool.id == anyId) return rt.tool.originWorld;
+        }
+        return QPointF();
+    };
+
+    auto parentOriginAt = [&](const QString& pid, int f) -> QPointF {
+        if (pid.isEmpty()) return QPointF();
+        const auto rf = core::eval::evaluateAtFrame(m_project, f, 10);
+        return fetchOrigin(rf, pid);
+    };
+
+    auto convertKeys = [&](QVector<Project::Entity::KeyframeVec2>& keys,
+                           const QString& oldPid,
+                           const QString& newPid) {
+        if (keys.isEmpty()) return;
+        for (auto& k : keys) {
+            const QPointF oldParentO = oldPid.isEmpty() ? QPointF() : parentOriginAt(oldPid, k.frame);
+            const QPointF world = oldPid.isEmpty() ? k.value : (oldParentO + k.value);
+            const QPointF newParentO = newPid.isEmpty() ? QPointF() : parentOriginAt(newPid, k.frame);
+            k.value = newPid.isEmpty() ? world : (world - newParentO);
+        }
+    };
+
     bool found = false;
     for (auto& e : ents) {
         if (e.id != id) continue;
         found = true;
+
+        const QString oldPid = e.parentId;
+        const QPointF oldBaseStored = oldPid.isEmpty() ? e.originWorld : e.parentOffsetWorld;
+        const QPointF oldParentOStart = oldPid.isEmpty() ? QPointF() : parentOriginAt(oldPid, frameStart);
+        const QPointF baseWorldAtStart = oldPid.isEmpty() ? oldBaseStored : (oldParentOStart + oldBaseStored);
+
+        // 转换 clip 与内嵌 key（兼容 v1/v2/v3 数据来源）
+        if (Project::AnimationClip* clip = activeClipOrNull(m_project)) {
+            if (clip->entityLocationKeys.contains(e.id)) {
+                auto k = clip->entityLocationKeys.value(e.id);
+                convertKeys(k, oldPid, parentId);
+                clip->entityLocationKeys.insert(e.id, k);
+            }
+        }
+        convertKeys(e.locationKeys, oldPid, parentId);
+
+        // 更新父子信息
         e.parentId = parentId;
-        e.parentOffsetWorld = parentOffsetWorld;
+
+        // 更新基准值：无 key/或 key 覆盖不到的区间仍应保持世界位置连续
+        if (parentId.isEmpty()) {
+            e.originWorld = baseWorldAtStart;
+            e.parentOffsetWorld = QPointF();
+        } else {
+            const QPointF newParentOStart = parentOriginAt(parentId, frameStart);
+            e.parentOffsetWorld = baseWorldAtStart - newParentOStart;
+            // cycle/parent missing 时 resolve 会回退到 sampledOriginForEntity；令其也尽量不跳
+            e.originWorld = baseWorldAtStart;
+        }
+
+        // 若调用方传入了当前帧下的 parentOffsetWorld（来自 UI 计算），在“绑定父对象”场景下优先采用，
+        // 保证操作当下立刻不跳（关键帧已整体转换，后续帧也保持一致）。
+        if (!parentId.isEmpty()) {
+            e.parentOffsetWorld = parentOffsetWorld;
+        }
         break;
     }
     if (!found) return false;
@@ -1951,16 +2257,35 @@ bool ProjectWorkspace::moveEntityBy(const QString& id, const QPointF& delta, int
             continue;
         }
         found = true;
-        // 父子关系：若该实体绑定父实体，则移动应修改相对偏移（保持“跟随父实体”语义）。
-        if (!e.parentId.isEmpty()) {
-            e.parentOffsetWorld += delta;
-            break;
-        }
         Project::AnimationClip* clip = activeClipOrNull(m_project);
         QVector<Project::Entity::KeyframeVec2>* keys = nullptr;
         if (clip) {
             keys = &clip->entityLocationKeys[e.id];
         }
+        // 父子关系：绑定父对象时，位置曲线表示“相对父对象偏移”。
+        if (!e.parentId.isEmpty()) {
+            const bool hasCurve = (keys && !keys->isEmpty()) || (!e.locationKeys.isEmpty());
+            if (autoKeyLocation && currentFrame >= 0) {
+                const QPointF sampled =
+                    (keys)
+                        ? sampleLocation(*keys, currentFrame, e.parentOffsetWorld, KeyInterpolation::Linear)
+                        : sampleLocation(e.locationKeys, currentFrame, e.parentOffsetWorld, KeyInterpolation::Linear);
+                if (keys) upsertKey(*keys, currentFrame, sampled + delta);
+                else upsertKey(e.locationKeys, currentFrame, sampled + delta);
+            } else if (!hasCurve) {
+                e.parentOffsetWorld += delta;
+            } else if (currentFrame >= 0) {
+                const QPointF sampled =
+                    (keys)
+                        ? sampleLocation(*keys, currentFrame, e.parentOffsetWorld, KeyInterpolation::Linear)
+                        : sampleLocation(e.locationKeys, currentFrame, e.parentOffsetWorld, KeyInterpolation::Linear);
+                if (keys) upsertKey(*keys, currentFrame, sampled + delta);
+                else upsertKey(e.locationKeys, currentFrame, sampled + delta);
+            } else {
+                e.parentOffsetWorld += delta;
+            }
+            break;
+        }
         const bool hasCurve = (keys && !keys->isEmpty()) || (!e.locationKeys.isEmpty());
         if (autoKeyLocation && currentFrame >= 0) {
             const QPointF sampled =
@@ -2139,12 +2464,66 @@ bool ProjectWorkspace::setToolParent(const QString& id, const QString& parentId,
         return false;
     }
     auto tools = m_project.tools();
+    const int frameStart = std::max(0, m_project.frameStart());
+
+    auto fetchOrigin = [](const core::eval::ResolvedProjectFrame& rf, const QString& anyId) -> QPointF {
+        if (anyId.isEmpty()) return QPointF();
+        for (const auto& re : rf.entities) {
+            if (re.entity.id == anyId) return re.entity.originWorld;
+        }
+        for (const auto& rt : rf.tools) {
+            if (rt.tool.id == anyId) return rt.tool.originWorld;
+        }
+        return QPointF();
+    };
+
+    auto parentOriginAt = [&](const QString& pid, int f) -> QPointF {
+        if (pid.isEmpty()) return QPointF();
+        const auto rf = core::eval::evaluateAtFrame(m_project, f, 10);
+        return fetchOrigin(rf, pid);
+    };
+
+    auto convertKeys = [&](QVector<Project::Entity::KeyframeVec2>& keys,
+                           const QString& oldPid,
+                           const QString& newPid) {
+        if (keys.isEmpty()) return;
+        for (auto& k : keys) {
+            const QPointF oldParentO = oldPid.isEmpty() ? QPointF() : parentOriginAt(oldPid, k.frame);
+            const QPointF world = oldPid.isEmpty() ? k.value : (oldParentO + k.value);
+            const QPointF newParentO = newPid.isEmpty() ? QPointF() : parentOriginAt(newPid, k.frame);
+            k.value = newPid.isEmpty() ? world : (world - newParentO);
+        }
+    };
+
     bool found = false;
     for (auto& t : tools) {
         if (t.id != id) continue;
         found = true;
+
+        const QString oldPid = t.parentId;
+        const QPointF oldBaseStored = oldPid.isEmpty() ? t.originWorld : t.parentOffsetWorld;
+        const QPointF oldParentOStart = oldPid.isEmpty() ? QPointF() : parentOriginAt(oldPid, frameStart);
+        const QPointF baseWorldAtStart = oldPid.isEmpty() ? oldBaseStored : (oldParentOStart + oldBaseStored);
+
+        if (Project::AnimationClip* clip = activeClipOrNull(m_project)) {
+            if (clip->toolLocationKeys.contains(t.id)) {
+                auto k = clip->toolLocationKeys.value(t.id);
+                convertKeys(k, oldPid, parentId);
+                clip->toolLocationKeys.insert(t.id, k);
+            }
+        }
+        convertKeys(t.locationKeys, oldPid, parentId);
+
         t.parentId = parentId;
-        t.parentOffsetWorld = parentOffsetWorld;
+        if (parentId.isEmpty()) {
+            t.originWorld = baseWorldAtStart;
+            t.parentOffsetWorld = QPointF();
+        } else {
+            const QPointF newParentOStart = parentOriginAt(parentId, frameStart);
+            t.parentOffsetWorld = baseWorldAtStart - newParentOStart;
+            t.originWorld = baseWorldAtStart;
+            t.parentOffsetWorld = parentOffsetWorld; // 同上：优先确保操作当下不跳
+        }
         break;
     }
     if (!found) return false;
@@ -2163,15 +2542,34 @@ bool ProjectWorkspace::moveToolBy(const QString& id, const QPointF& delta, int c
     for (auto& t : tools) {
         if (t.id != id) continue;
         found = true;
-        if (!t.parentId.isEmpty()) {
-            t.parentOffsetWorld += delta;
-            break;
-        }
         Project::AnimationClip* clip = activeClipOrNull(m_project);
         QVector<Project::Entity::KeyframeVec2>* keys = nullptr;
         if (clip) {
             keys = &clip->toolLocationKeys[t.id];
         }
+        if (!t.parentId.isEmpty()) {
+            const bool hasCurve = (keys && !keys->isEmpty()) || (!t.locationKeys.isEmpty());
+            if (autoKeyLocation && currentFrame >= 0) {
+                const QPointF sampled =
+                    (keys)
+                        ? sampleLocation(*keys, currentFrame, t.parentOffsetWorld, KeyInterpolation::Linear)
+                        : sampleLocation(t.locationKeys, currentFrame, t.parentOffsetWorld, KeyInterpolation::Linear);
+                if (keys) upsertKey(*keys, currentFrame, sampled + delta);
+                else upsertKey(t.locationKeys, currentFrame, sampled + delta);
+            } else if (!hasCurve) {
+                t.parentOffsetWorld += delta;
+            } else if (currentFrame >= 0) {
+                const QPointF sampled =
+                    (keys)
+                        ? sampleLocation(*keys, currentFrame, t.parentOffsetWorld, KeyInterpolation::Linear)
+                        : sampleLocation(t.locationKeys, currentFrame, t.parentOffsetWorld, KeyInterpolation::Linear);
+                if (keys) upsertKey(*keys, currentFrame, sampled + delta);
+                else upsertKey(t.locationKeys, currentFrame, sampled + delta);
+            } else {
+                t.parentOffsetWorld += delta;
+            }
+            break;
+        }
         const bool hasCurve = (keys && !keys->isEmpty()) || (!t.locationKeys.isEmpty());
         if (autoKeyLocation && currentFrame >= 0) {
             const QPointF sampled =
@@ -2207,8 +2605,16 @@ bool ProjectWorkspace::setEntityLocationKey(const QString& id, int frame, const
     }
     Project::AnimationClip* clip = activeClipOrNull(m_project);
     if (!clip) return false;
+    QPointF keyValue = originWorld;
+    for (const auto& e : m_project.entities()) {
+        if (e.id == id && !e.parentId.isEmpty()) {
+            const QPointF parentWorld = resolvedOriginAtFrame(m_project, e.parentId, frame);
+            keyValue = originWorld - parentWorld;
+            break;
+        }
+    }
     auto& keys = clip->entityLocationKeys[id];
-    upsertKey(keys, frame, originWorld);
+    upsertKey(keys, frame, keyValue);
     return writeIndexJson();
 }
 
@@ -2406,7 +2812,25 @@ QString ProjectWorkspace::copyIntoAssetsAsBackground(const QString& sourceFilePa
     const auto destAbs = QDir(assetsDir).filePath(fileName);
     const auto destRel = QString::fromUtf8(kAssetsDirName) + "/" + fileName;
 
-    QImage img(sourceFilePath);
+    // Qt 默认的 image allocation limit 较小，超大分辨率背景可能会被拒绝。
+    // 这里提高 limit，并对极端大图按像素数上限自动缩放后再裁剪落盘。
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+    QImageReader::setAllocationLimit(1024); // MB
+#endif
+    QImageReader reader(sourceFilePath);
+    reader.setAutoTransform(true);
+    const QSize sz = reader.size();
+    if (sz.isValid()) {
+        constexpr qint64 kMaxPixels = 160LL * 1000LL * 1000LL; // 160MP
+        const qint64 pixels = qint64(sz.width()) * qint64(sz.height());
+        if (pixels > kMaxPixels) {
+            const double s = std::sqrt(double(kMaxPixels) / std::max<double>(1.0, double(pixels)));
+            const int nw = std::max(1, int(std::lround(sz.width() * s)));
+            const int nh = std::max(1, int(std::lround(sz.height() * s)));
+            reader.setScaledSize(QSize(nw, nh));
+        }
+    }
+    QImage img = reader.read();
     if (img.isNull()) {
         return {};
     }

client/core/workspace/ProjectWorkspace.h

@@ -8,6 +8,7 @@
 #include <QString>
 #include <QStringList>
 #include <QVector>
+#include <QPoint>
 
 namespace core {
 
@@ -95,6 +96,11 @@ public:
     bool moveToolBy(const QString& id, const QPointF& delta, int currentFrame, bool autoKeyLocation);
     bool addEntity(const Project::Entity& entity, const QImage& image);
     bool setEntityVisible(const QString& id, bool on);
+    bool setEntityBlackholeVisible(const QString& id, bool on);
+    bool resolveBlackholeByUseOriginalBackground(const QString& id);
+    // 复制背景其他区域填充黑洞（sourceOffsetPx 以黑洞包围盒左上角为基准偏移）
+    bool resolveBlackholeByCopyBackground(const QString& id, const QPoint& sourceOffsetPx,
+                                          bool hideBlackholeAfterFill);
     bool setEntityVisibilityKey(const QString& id, int frame, bool visible);
     bool removeEntityVisibilityKey(const QString& id, int frame);
     bool setEntityDisplayName(const QString& id, const QString& displayName);
@@ -133,6 +139,8 @@ private:
     bool syncEntityPayloadsToDisk();
     bool hydrateEntityPayloadsFromDisk();
     void loadV1LegacyAnimationSidecars();
+    bool writeIndexJsonWithoutPayloadSync();
+    bool saveSingleEntityPayload(Project::Entity& entity);
 
     static QJsonObject projectToJson(const Project& project);
     static bool projectFromJson(const QJsonObject& root, Project& outProject, int* outFileVersion);

client/gui/CMakeLists.txt

@@ -13,11 +13,13 @@ set(GUI_SOURCES
     ${GUI_ROOT}/dialogs/FrameAnimationDialog.cpp
     ${GUI_ROOT}/dialogs/CancelableTaskDialog.cpp
     ${GUI_ROOT}/dialogs/EntityFinalizeDialog.cpp
+    ${GUI_ROOT}/dialogs/BlackholeResolveDialog.cpp
     ${GUI_ROOT}/dialogs/EntityIntroPopup.cpp
     ${GUI_ROOT}/editor/EditorCanvas.cpp
     ${GUI_ROOT}/editor/EntityCutoutUtils.cpp
     ${GUI_ROOT}/params/ParamControls.cpp
     ${GUI_ROOT}/props/BackgroundPropertySection.cpp
+    ${GUI_ROOT}/props/BlackholePropertySection.cpp
     ${GUI_ROOT}/props/EntityPropertySection.cpp
     ${GUI_ROOT}/props/ToolPropertySection.cpp
     ${GUI_ROOT}/timeline/TimelineWidget.cpp
@@ -34,11 +36,13 @@ set(GUI_HEADERS
     ${GUI_ROOT}/dialogs/FrameAnimationDialog.h
     ${GUI_ROOT}/dialogs/CancelableTaskDialog.h
     ${GUI_ROOT}/dialogs/EntityFinalizeDialog.h
+    ${GUI_ROOT}/dialogs/BlackholeResolveDialog.h
     ${GUI_ROOT}/dialogs/EntityIntroPopup.h
     ${GUI_ROOT}/editor/EditorCanvas.h
     ${GUI_ROOT}/editor/EntityCutoutUtils.h
     ${GUI_ROOT}/params/ParamControls.h
     ${GUI_ROOT}/props/BackgroundPropertySection.h
+    ${GUI_ROOT}/props/BlackholePropertySection.h
     ${GUI_ROOT}/props/EntityPropertySection.h
     ${GUI_ROOT}/props/ToolPropertySection.h
     ${GUI_ROOT}/props/PropertySectionWidget.h

client/gui/app/main.cpp

@@ -1,11 +1,17 @@
 #include "main_window/MainWindow.h"
 
 #include <QApplication>
+#include <QImageReader>
 
 int main(int argc, char* argv[]) {
     QApplication app(argc, argv);
     app.setApplicationName(QStringLiteral("landscape tool"));
 
+    // 全局放宽 Qt 图片分配限制（默认常见为 256MB），否则超大分辨率背景/深度可能在任意加载路径被拒绝。
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+    QImageReader::setAllocationLimit(1024); // MB
+#endif
+
     MainWindow window;
     window.show();
 

client/gui/dialogs/BlackholeResolveDialog.cpp

@@ -0,0 +1,175 @@
+#include "dialogs/BlackholeResolveDialog.h"
+
+#include <QDialogButtonBox>
+#include <QFrame>
+#include <QLabel>
+#include <QPushButton>
+#include <QStackedWidget>
+#include <QVBoxLayout>
+
+namespace {
+
+QPushButton* makeAlgoButton(const QString& title, const QString& subtitle, QWidget* parent) {
+    auto* btn = new QPushButton(parent);
+    btn->setCheckable(false);
+    btn->setCursor(Qt::PointingHandCursor);
+    btn->setMinimumHeight(86);
+    btn->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
+    btn->setText(title + QStringLiteral("\n") + subtitle);
+    btn->setStyleSheet(
+        "QPushButton { text-align: left; padding: 10px 12px; border: 1px solid palette(mid); border-radius: 8px; }"
+        "QPushButton:hover { border-color: palette(highlight); }");
+    return btn;
+}
+
+}  // namespace
+
+BlackholeResolveDialog::BlackholeResolveDialog(const QString& blackholeName, QWidget* parent)
+    : QDialog(parent),
+      m_blackholeName(blackholeName) {
+    setModal(true);
+    setMinimumSize(560, 420);
+    setWindowTitle(QStringLiteral("黑洞解决"));
+
+    auto* root = new QVBoxLayout(this);
+    m_pages = new QStackedWidget(this);
+    root->addWidget(m_pages, 1);
+
+    buildSelectPage();
+    buildDetailPage();
+    m_pages->setCurrentWidget(m_pageSelect);
+}
+
+void BlackholeResolveDialog::buildSelectPage() {
+    m_pageSelect = new QWidget(this);
+    auto* layout = new QVBoxLayout(m_pageSelect);
+    layout->setContentsMargins(8, 8, 8, 8);
+    layout->setSpacing(12);
+
+    auto* title = new QLabel(QStringLiteral("第 1 步：选择黑洞解决算法"), m_pageSelect);
+    auto* sub = new QLabel(QStringLiteral("当前黑洞：%1").arg(m_blackholeName), m_pageSelect);
+    title->setStyleSheet("font-size: 18px; font-weight: 600;");
+    sub->setStyleSheet("color: palette(mid);");
+    layout->addWidget(title);
+    layout->addWidget(sub);
+
+    auto* btnCopy = makeAlgoButton(
+        QStringLiteral("复制背景其他区域"),
+        QStringLiteral("进入画布拖动取样框，直观选择复制来源。"),
+        m_pageSelect);
+    auto* btnOriginal = makeAlgoButton(
+        QStringLiteral("使用原始背景"),
+        QStringLiteral("撤销黑洞显示，恢复抠图前背景区域。"),
+        m_pageSelect);
+    layout->addWidget(btnCopy);
+    layout->addWidget(btnOriginal);
+
+    auto* modelNote = new QLabel(
+        QStringLiteral("模型补全：已预留接口，本版本暂不实现。"),
+        m_pageSelect);
+    modelNote->setStyleSheet("color: palette(mid);");
+    layout->addWidget(modelNote);
+    layout->addStretch(1);
+
+    auto* btns = new QDialogButtonBox(QDialogButtonBox::Cancel, m_pageSelect);
+    connect(btns, &QDialogButtonBox::rejected, this, &QDialog::reject);
+    layout->addWidget(btns);
+
+    connect(btnCopy, &QPushButton::clicked, this, [this]() {
+        enterAlgorithmPage(Algorithm::CopyBackgroundRegion);
+    });
+    connect(btnOriginal, &QPushButton::clicked, this, [this]() {
+        enterAlgorithmPage(Algorithm::UseOriginalBackground);
+    });
+
+    m_pages->addWidget(m_pageSelect);
+}
+
+void BlackholeResolveDialog::buildDetailPage() {
+    m_pageDetail = new QWidget(this);
+    auto* layout = new QVBoxLayout(m_pageDetail);
+    layout->setContentsMargins(8, 8, 8, 8);
+    layout->setSpacing(10);
+
+    m_detailTitle = new QLabel(m_pageDetail);
+    m_detailTitle->setStyleSheet("font-size: 18px; font-weight: 600;");
+    m_detailHint = new QLabel(m_pageDetail);
+    m_detailHint->setWordWrap(true);
+    m_detailHint->setStyleSheet("color: palette(mid);");
+    layout->addWidget(m_detailTitle);
+    layout->addWidget(m_detailHint);
+
+    m_algoDetails = new QStackedWidget(m_pageDetail);
+
+    // 详情页 A：复制背景其他区域（交互布局）
+    m_copyDetail = new QWidget(m_algoDetails);
+    {
+        auto* cLay = new QVBoxLayout(m_copyDetail);
+        cLay->setSpacing(8);
+
+        auto* panel = new QFrame(m_copyDetail);
+        panel->setFrameShape(QFrame::StyledPanel);
+        auto* pLay = new QVBoxLayout(panel);
+        pLay->setSpacing(8);
+
+        auto* tip = new QLabel(
+            QStringLiteral("说明：点击“应用”后进入画布拖动模式。\n在画布中拖动青色取样框，松开鼠标即可将该区域复制到黑洞位置并自动移除黑洞。"),
+            panel);
+        tip->setWordWrap(true);
+        tip->setStyleSheet("color: palette(mid);");
+        pLay->addWidget(tip);
+        cLay->addWidget(panel);
+        cLay->addStretch(1);
+    }
+
+    // 详情页 B：使用原始背景（确认布局）
+    m_originalDetail = new QWidget(m_algoDetails);
+    {
+        auto* oLay = new QVBoxLayout(m_originalDetail);
+        oLay->setSpacing(8);
+        auto* desc = new QLabel(
+            QStringLiteral("该方案不会改动背景像素文件，只会将黑洞切换为不显示，从而恢复原始背景区域。"),
+            m_originalDetail);
+        desc->setWordWrap(true);
+        auto* note = new QLabel(
+            QStringLiteral("适用场景：当前黑洞区域无需二次修补，只需恢复抠图前背景；应用后黑洞会自动移除。"),
+            m_originalDetail);
+        note->setWordWrap(true);
+        note->setStyleSheet("color: palette(mid);");
+        oLay->addWidget(desc);
+        oLay->addWidget(note);
+        oLay->addStretch(1);
+    }
+
+    m_algoDetails->addWidget(m_copyDetail);
+    m_algoDetails->addWidget(m_originalDetail);
+    layout->addWidget(m_algoDetails, 1);
+
+    auto* btns = new QDialogButtonBox(m_pageDetail);
+    auto* btnBack = btns->addButton(QStringLiteral("上一步"), QDialogButtonBox::ActionRole);
+    auto* btnApply = btns->addButton(QStringLiteral("应用"), QDialogButtonBox::AcceptRole);
+    auto* btnCancel = btns->addButton(QDialogButtonBox::Cancel);
+    connect(btnBack, &QPushButton::clicked, this, [this]() {
+        m_pages->setCurrentWidget(m_pageSelect);
+    });
+    connect(btnApply, &QPushButton::clicked, this, &QDialog::accept);
+    connect(btnCancel, &QPushButton::clicked, this, &QDialog::reject);
+    layout->addWidget(btns);
+
+    m_pages->addWidget(m_pageDetail);
+}
+
+void BlackholeResolveDialog::enterAlgorithmPage(Algorithm algo) {
+    m_selectedAlgorithm = algo;
+    if (algo == Algorithm::CopyBackgroundRegion) {
+        m_detailTitle->setText(QStringLiteral("第 2 步：复制背景其他区域"));
+        m_detailHint->setText(QStringLiteral("准备进入画布拖动取样框模式。"));
+        m_algoDetails->setCurrentWidget(m_copyDetail);
+    } else {
+        m_detailTitle->setText(QStringLiteral("第 2 步：使用原始背景"));
+        m_detailHint->setText(QStringLiteral("确认后将切换为原始背景显示。"));
+        m_algoDetails->setCurrentWidget(m_originalDetail);
+    }
+    m_pages->setCurrentWidget(m_pageDetail);
+}
+

client/gui/dialogs/BlackholeResolveDialog.h

@@ -0,0 +1,42 @@
+#pragma once
+
+#include <QDialog>
+
+class QLabel;
+class QStackedWidget;
+
+class BlackholeResolveDialog final : public QDialog {
+    Q_OBJECT
+public:
+    enum class Algorithm {
+        CopyBackgroundRegion,
+        UseOriginalBackground,
+    };
+
+    explicit BlackholeResolveDialog(const QString& blackholeName, QWidget* parent = nullptr);
+
+    Algorithm selectedAlgorithm() const { return m_selectedAlgorithm; }
+
+private:
+    void buildSelectPage();
+    void buildDetailPage();
+    void enterAlgorithmPage(Algorithm algo);
+
+private:
+    QString m_blackholeName;
+    Algorithm m_selectedAlgorithm = Algorithm::UseOriginalBackground;
+
+    QStackedWidget* m_pages = nullptr;
+
+    QWidget* m_pageSelect = nullptr;
+    QWidget* m_pageDetail = nullptr;
+
+    QLabel* m_detailTitle = nullptr;
+    QLabel* m_detailHint = nullptr;
+    QStackedWidget* m_algoDetails = nullptr;
+
+    QWidget* m_copyDetail = nullptr;
+
+    QWidget* m_originalDetail = nullptr;
+};
+

client/gui/dialogs/FrameAnimationDialog.cpp

@@ -8,6 +8,7 @@
 #include <QFileDialog>
 #include <QFileInfo>
 #include <QImage>
+#include <QImageReader>
 #include <QLabel>
 #include <QListWidget>
 #include <QMessageBox>
@@ -171,7 +172,25 @@ void FrameAnimationDialog::updatePreviewForFrame(int frame) {
 }
 
 bool FrameAnimationDialog::applyImageToFrame(int frame, const QString& absImagePath) {
-    QImage img(absImagePath);
+    // Qt 默认的 image allocation limit 较小，超大分辨率图可能会被拒绝。
+    // 这里提高 limit，并对极端大图按像素数上限自动缩放，避免 OOM。
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+    QImageReader::setAllocationLimit(1024); // MB
+#endif
+    QImageReader reader(absImagePath);
+    reader.setAutoTransform(true);
+    const QSize sz = reader.size();
+    if (sz.isValid()) {
+        constexpr qint64 kMaxPixels = 120LL * 1000LL * 1000LL; // 120MP
+        const qint64 pixels = qint64(sz.width()) * qint64(sz.height());
+        if (pixels > kMaxPixels) {
+            const double s = std::sqrt(double(kMaxPixels) / std::max<double>(1.0, double(pixels)));
+            const int nw = std::max(1, int(std::lround(sz.width() * s)));
+            const int nh = std::max(1, int(std::lround(sz.height() * s)));
+            reader.setScaledSize(QSize(nw, nh));
+        }
+    }
+    QImage img = reader.read();
     if (img.isNull()) {
         return false;
     }

client/gui/dialogs/ImageCropDialog.cpp

@@ -6,6 +6,7 @@
 #include <QMouseEvent>
 #include <QPainter>
 #include <QPushButton>
+#include <QImageReader>
 #include <QtMath>
 
 class ImageCropDialog::CropView final : public QWidget {
@@ -159,7 +160,25 @@ ImageCropDialog::ImageCropDialog(const QString& imagePath, QWidget* parent)
 }
 
 void ImageCropDialog::loadImageOrClose() {
-    m_image = QImage(m_imagePath);
+    // Qt 默认的 image allocation limit 较小（常见为 256MB），超大分辨率图会被拒绝。
+    // 这里用 QImageReader 并提高 limit；同时对极端大图按像素数上限自动缩放，避免 OOM。
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+    QImageReader::setAllocationLimit(1024); // MB
+#endif
+    QImageReader reader(m_imagePath);
+    reader.setAutoTransform(true);
+    const QSize sz = reader.size();
+    if (sz.isValid()) {
+        constexpr qint64 kMaxPixels = 120LL * 1000LL * 1000LL; // 120MP
+        const qint64 pixels = qint64(sz.width()) * qint64(sz.height());
+        if (pixels > kMaxPixels) {
+            const double s = std::sqrt(double(kMaxPixels) / std::max<double>(1.0, double(pixels)));
+            const int nw = std::max(1, int(std::lround(sz.width() * s)));
+            const int nh = std::max(1, int(std::lround(sz.height() * s)));
+            reader.setScaledSize(QSize(nw, nh));
+        }
+    }
+    m_image = reader.read();
     if (m_image.isNull()) {
         reject();
     }

client/gui/editor/EditorCanvas.cpp

@@ -19,6 +19,7 @@
 #include <QJsonArray>
 #include <QJsonDocument>
 #include <QJsonObject>
+#include <QImageReader>
 #include <QMimeData>
 #include <QDragEnterEvent>
 #include <QDropEvent>
@@ -37,6 +38,51 @@ constexpr int kMinStrokePointsSam = 4;
 constexpr int kMinStrokePointsManual = 8;
 constexpr int kMaxSamPointPrompts = 32;
 
+static QImage readImageTolerant(const QString& absPath) {
+    if (absPath.isEmpty()) {
+        return {};
+    }
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+    // Qt 默认限制常见为 256MB；超大分辨率背景/深度可能会被拒绝。
+    QImageReader::setAllocationLimit(1024); // MB
+#endif
+    QImageReader reader(absPath);
+    reader.setAutoTransform(true);
+    const QSize sz = reader.size();
+    if (sz.isValid()) {
+        // 防止极端大图导致内存占用爆炸：按像素数上限进行缩放读取。
+        constexpr qint64 kMaxPixels = 160LL * 1000LL * 1000LL; // 160MP
+        const qint64 pixels = qint64(sz.width()) * qint64(sz.height());
+        if (pixels > kMaxPixels) {
+            const double s = std::sqrt(double(kMaxPixels) / std::max<double>(1.0, double(pixels)));
+            const int nw = std::max(1, int(std::lround(sz.width() * s)));
+            const int nh = std::max(1, int(std::lround(sz.height() * s)));
+            reader.setScaledSize(QSize(nw, nh));
+        }
+    }
+    return reader.read();
+}
+
+QRectF clampRectTopLeftToBounds(const QRectF& rect, const QRectF& bounds) {
+    if (rect.isNull() || bounds.isNull()) {
+        return rect;
+    }
+    QRectF out = rect;
+    if (out.width() > bounds.width()) {
+        out.setWidth(bounds.width());
+    }
+    if (out.height() > bounds.height()) {
+        out.setHeight(bounds.height());
+    }
+    QPointF tl = out.topLeft();
+    if (tl.x() < bounds.left()) tl.setX(bounds.left());
+    if (tl.y() < bounds.top()) tl.setY(bounds.top());
+    if (tl.x() + out.width() > bounds.right()) tl.setX(bounds.right() - out.width());
+    if (tl.y() + out.height() > bounds.bottom()) tl.setY(bounds.bottom() - out.height());
+    out.moveTopLeft(tl);
+    return out;
+}
+
 QVector<QPointF> snapStrokeToEdges(const QVector<QPointF>& strokeWorld, const QImage& bgImage, int searchRadiusPx) {
     if (strokeWorld.size() < 3 || bgImage.isNull()) {
         return strokeWorld;
@@ -100,6 +146,12 @@ bool buildSamSegmentPayloadFromStroke(
     if (strokeWorld.size() < kMinStrokePointsSam || bgImage.isNull()) {
         return false;
     }
+    outCropPng.clear();
+    outOverlayPng.clear();
+    outPointCoords = QJsonArray{};
+    outPointLabels = QJsonArray{};
+    outBoxXyxy = QJsonArray{};
+
     const QRectF polyBr = QPolygonF(strokeWorld).boundingRect();
     if (polyBr.isEmpty()) {
         return false;
@@ -148,30 +200,35 @@ bool buildSamSegmentPayloadFromStroke(
     }
     bufOv.close();
 
+    // 关键修复：
+    // 用户“圈选”通常是在实体外侧画一圈。原实现把笔画点全当作前景点(1)，
+    // 会让 SAM 倾向于把圈线/裁剪边缘当成前景，从而出现“沿小块图像边缘贴边”的 mask。
+    // 新策略：圈内给一个前景点(1)，圈线采样一些背景点(0)抑制外侧区域。
+    auto clampD = [](double v, double lo, double hi) { return std::clamp(v, lo, hi); };
+
+    // 前景点：取笔画包围盒中心（通常落在圈内），并限制在裁剪范围内。
+    const QPointF centerWorld = QPolygonF(strokeWorld).boundingRect().center();
+    const QPointF centerLocal = centerWorld - origin;
+    const double fgx = clampD(centerLocal.x(), 0.0, static_cast<double>(cw - 1));
+    const double fgy = clampD(centerLocal.y(), 0.0, static_cast<double>(ch - 1));
+    outPointCoords.append(QJsonArray{fgx, fgy});
+    outPointLabels.append(1);
+
+    // 背景点：在圈线(polyline)上均匀采样（最多 kMaxSamPointPrompts-1 个）。
     const int n = static_cast<int>(strokeWorld.size());
-    const int step = std::max(1, (n + kMaxSamPointPrompts - 1) / kMaxSamPointPrompts);
+    const int maxBg = std::max(0, kMaxSamPointPrompts - 1);
-    for (int i = 0; i < n; i += step) {
+    if (n >= 2 && maxBg > 0) {
-        const QPointF L = strokeWorld[i] - origin;
+        const int step = std::max(1, (n + maxBg - 1) / maxBg);
-        outPointCoords.append(QJsonArray{L.x(), L.y()});
+        for (int i = 0; i < n; i += step) {
-        outPointLabels.append(1);
+            const QPointF L = strokeWorld[i] - origin;
-    }
+            const double bx = clampD(L.x(), 0.0, static_cast<double>(cw - 1));
-    if (n > 1) {
+            const double by = clampD(L.y(), 0.0, static_cast<double>(ch - 1));
-        const QPointF Llast = strokeWorld.last() - origin;
+            outPointCoords.append(QJsonArray{bx, by});
-        if (!outPointCoords.isEmpty()) {
+            outPointLabels.append(0);
-            const QJsonArray prev = outPointCoords.last().toArray();
-            if (prev.size() >= 2) {
-                const double dx = Llast.x() - prev.at(0).toDouble();
-                const double dy = Llast.y() - prev.at(1).toDouble();
-                if (dx * dx + dy * dy > 4.0) {
-                    outPointCoords.append(QJsonArray{Llast.x(), Llast.y()});
-                    outPointLabels.append(1);
-                }
-            }
         }
     }
 
     const QRectF tight = QPolygonF(strokeWorld).boundingRect();
-    auto clampD = [](double v, double lo, double hi) { return std::clamp(v, lo, hi); };
     double x1 = clampD(tight.left() - origin.x(), 0.0, static_cast<double>(cw - 1));
     double y1 = clampD(tight.top() - origin.y(), 0.0, static_cast<double>(ch - 1));
     double x2 = clampD(tight.right() - origin.x(), 0.0, static_cast<double>(cw - 1));
@@ -479,9 +536,11 @@ void EditorCanvas::setPresentationPreviewMode(bool on) {
     m_presZoomFinishingRestore = false;
     m_presBgPanSession = false;
     m_presBgDragDist = 0.0;
+    cancelBlackholeCopyResolve();
     if (on) {
         m_tool = Tool::Move;
         m_selectedEntity = -1;
+        m_selectedBlackholeEntityId.clear();
         m_draggingEntity = false;
         m_drawingEntity = false;
         m_dragMode = DragMode::None;
@@ -505,7 +564,7 @@ void EditorCanvas::setEntities(const QVector<core::Project::Entity>& entities,
     if (!m_depthAbsPath.isEmpty()) {
         if (m_depthDirty) {
             m_depthDirty = false;
-            QImage img(m_depthAbsPath);
+            QImage img = readImageTolerant(m_depthAbsPath);
             m_depthImage8 = img.isNull() ? QImage() : img.convertToFormat(QImage::Format_Grayscale8);
         }
     }
@@ -521,6 +580,7 @@ void EditorCanvas::setEntities(const QVector<core::Project::Entity>& entities,
         const QPointF originWorld = e.originWorld;
         v.animatedOriginWorld = originWorld;
         v.cutoutPolygonWorld = e.cutoutPolygonWorld;
+        v.blackholeVisible = e.blackholeVisible;
         v.distanceScaleCalibMult = e.distanceScaleCalibMult;
         v.ignoreDistanceScale = e.ignoreDistanceScale;
 
@@ -597,6 +657,31 @@ void EditorCanvas::setEntities(const QVector<core::Project::Entity>& entities,
         emit selectedEntityChanged(false, QString(), 0, QPointF());
     }
 
+    if (!m_selectedBlackholeEntityId.isEmpty()) {
+        bool exists = false;
+        for (const auto& ent : m_entities) {
+            if (ent.id == m_selectedBlackholeEntityId && !ent.cutoutPolygonWorld.isEmpty()) {
+                exists = true;
+                break;
+            }
+        }
+        if (!exists) {
+            m_selectedBlackholeEntityId.clear();
+        }
+    }
+    if (m_blackholeCopyResolveActive) {
+        bool exists = false;
+        for (const auto& ent : m_entities) {
+            if (ent.id == m_blackholeCopyEntityId && !ent.cutoutPolygonWorld.isEmpty()) {
+                exists = true;
+                break;
+            }
+        }
+        if (!exists) {
+            cancelBlackholeCopyResolve();
+        }
+    }
+
     m_bgCutoutDirty = true;
     update();
 }
@@ -815,10 +900,119 @@ void EditorCanvas::selectEntityById(const QString& id) {
     clearEntitySelection();
 }
 
+void EditorCanvas::selectBlackholeByEntityId(const QString& entityId) {
+    if (entityId.isEmpty()) {
+        clearBlackholeSelection();
+        return;
+    }
+    for (const auto& ent : m_entities) {
+        if (ent.id == entityId && !ent.cutoutPolygonWorld.isEmpty()) {
+            if (m_selectedBlackholeEntityId == entityId) {
+                update();
+                return;
+            }
+            m_selectedBlackholeEntityId = entityId;
+            update();
+            return;
+        }
+    }
+    clearBlackholeSelection();
+}
+
+void EditorCanvas::clearBlackholeSelection() {
+    if (m_blackholeCopyResolveActive) {
+        cancelBlackholeCopyResolve();
+    }
+    if (m_selectedBlackholeEntityId.isEmpty()) {
+        return;
+    }
+    m_selectedBlackholeEntityId.clear();
+    update();
+}
+
+bool EditorCanvas::startBlackholeCopyResolve(const QString& entityId) {
+    if (entityId.isEmpty()) {
+        return false;
+    }
+    const Entity* hit = nullptr;
+    for (const auto& ent : m_entities) {
+        if (ent.id == entityId && !ent.cutoutPolygonWorld.isEmpty()) {
+            hit = &ent;
+            break;
+        }
+    }
+    if (!hit) {
+        return false;
+    }
+    ensurePixmapLoaded();
+    if (m_bgImageDirty) {
+        m_bgImageDirty = false;
+        m_bgImage = readImageTolerant(m_bgAbsPath);
+        if (m_bgImage.format() != QImage::Format_ARGB32_Premultiplied && !m_bgImage.isNull()) {
+            m_bgImage = m_bgImage.convertToFormat(QImage::Format_ARGB32_Premultiplied);
+        }
+    }
+    const QRectF bg = worldRectOfBackground();
+    if (bg.isNull()) {
+        return false;
+    }
+
+    QRectF holeRect = entity_cutout::pathFromWorldPolygon(hit->cutoutPolygonWorld).boundingRect();
+    if (holeRect.isNull()) {
+        return false;
+    }
+    if (holeRect.width() < 1.0 || holeRect.height() < 1.0) {
+        return false;
+    }
+    holeRect = holeRect.intersected(bg);
+    if (holeRect.isNull()) {
+        return false;
+    }
+
+    QRectF srcRect(holeRect);
+    const qreal shift = std::max<qreal>(24.0, holeRect.width() * 0.6);
+    srcRect.translate(shift, 0.0);
+    srcRect = clampRectTopLeftToBounds(srcRect, bg);
+
+    m_selectedBlackholeEntityId = entityId;
+    m_blackholeCopyResolveActive = true;
+    m_blackholeCopyEntityId = entityId;
+    m_blackholeCopyHoleRect = holeRect;
+    m_blackholeCopySourceRect = srcRect;
+    m_blackholeCopyDragging = false;
+    m_blackholeCopyDragOffset = QPointF();
+    updateCursor();
+    update();
+    return true;
+}
+
+void EditorCanvas::cancelBlackholeCopyResolve() {
+    if (!m_blackholeCopyResolveActive) {
+        return;
+    }
+    m_blackholeCopyResolveActive = false;
+    m_blackholeCopyEntityId.clear();
+    m_blackholeCopyHoleRect = QRectF();
+    m_blackholeCopySourceRect = QRectF();
+    m_blackholeCopyDragging = false;
+    m_blackholeCopyDragOffset = QPointF();
+    updateCursor();
+    update();
+}
+
+void EditorCanvas::notifyBackgroundContentChanged() {
+    // 背景路径不变时，setBackgroundImagePath 不会触发刷新；这里显式让 pixmap/image 缓存失效并重载。
+    invalidatePixmap();
+    m_bgImageDirty = true;
+    m_bgCutoutDirty = true;
+    update();
+}
+
 void EditorCanvas::setBackgroundImagePath(const QString& absolutePath) {
     if (m_bgAbsPath == absolutePath) {
         return;
     }
+    cancelBlackholeCopyResolve();
     m_bgAbsPath = absolutePath;
     invalidatePixmap();
     m_bgImageDirty = true;
@@ -997,13 +1191,21 @@ void EditorCanvas::ensurePixmapLoaded() const {
     m_pixmapDirty = false;
     m_bgPixmap = QPixmap();
     if (!m_bgAbsPath.isEmpty()) {
-        m_bgPixmap = QPixmap(m_bgAbsPath);
+        // 避免直接 QPixmap(path) 走默认 imageio 限制（超大图可能被 256MB 上限拒绝）
+        const QImage img = readImageTolerant(m_bgAbsPath);
+        if (!img.isNull()) {
+            m_bgPixmap = QPixmap::fromImage(img);
+        }
     }
     m_bgImageDirty = true;
     m_bgCutoutDirty = true;
 }
 
 void EditorCanvas::updateCursor() {
+    if (m_blackholeCopyResolveActive) {
+        setCursor(m_blackholeCopyDragging ? Qt::ClosedHandCursor : Qt::OpenHandCursor);
+        return;
+    }
     if (m_presentationPreviewMode) {
         if (m_presHoverEntityIndex >= 0) {
             setCursor(Qt::PointingHandCursor);
@@ -1105,7 +1307,7 @@ void EditorCanvas::paintEvent(QPaintEvent* e) {
     if (showBg) {
         if (m_bgImageDirty) {
             m_bgImageDirty = false;
-            m_bgImage = QImage(m_bgAbsPath);
+            m_bgImage = readImageTolerant(m_bgAbsPath);
             if (m_bgImage.format() != QImage::Format_ARGB32_Premultiplied && !m_bgImage.isNull()) {
                 m_bgImage = m_bgImage.convertToFormat(QImage::Format_ARGB32_Premultiplied);
             }
@@ -1115,7 +1317,7 @@ void EditorCanvas::paintEvent(QPaintEvent* e) {
             m_bgCutoutDirty = false;
             m_bgImageCutout = m_bgImage;
             for (const auto& ent : m_entities) {
-                if (ent.opacity > 0.001 && !ent.cutoutPolygonWorld.isEmpty() && !m_bgImageCutout.isNull()) {
+                if (ent.blackholeVisible && !ent.cutoutPolygonWorld.isEmpty() && !m_bgImageCutout.isNull()) {
                     entity_cutout::applyBlackFillToBackground(m_bgImageCutout, ent.cutoutPolygonWorld);
                 }
             }
@@ -1156,7 +1358,7 @@ void EditorCanvas::paintEvent(QPaintEvent* e) {
     if (wantDepth) {
         if (m_depthDirty) {
             m_depthDirty = false;
-            QImage img(m_depthAbsPath);
+            QImage img = readImageTolerant(m_depthAbsPath);
             m_depthImage8 = img.isNull() ? QImage() : img.convertToFormat(QImage::Format_Grayscale8);
         }
         if (!m_depthImage8.isNull()) {
@@ -1173,6 +1375,48 @@ void EditorCanvas::paintEvent(QPaintEvent* e) {
         }
     }
 
+    if (!m_presentationPreviewMode && m_blackholeCopyResolveActive &&
+        !m_blackholeCopyHoleRect.isNull() && !m_blackholeCopySourceRect.isNull()) {
+        if (!m_bgImage.isNull()) {
+            const QRect srcRect = m_blackholeCopySourceRect.toAlignedRect();
+            const QRect dstRect = m_blackholeCopyHoleRect.toAlignedRect();
+            if (srcRect.isValid() && dstRect.isValid()) {
+                QPainterPath holePath;
+                for (const auto& ent : m_entities) {
+                    if (ent.id == m_blackholeCopyEntityId && !ent.cutoutPolygonWorld.isEmpty()) {
+                        holePath = entity_cutout::pathFromWorldPolygon(ent.cutoutPolygonWorld);
+                        break;
+                    }
+                }
+                p.save();
+                if (!holePath.isEmpty()) {
+                    p.setClipPath(holePath);
+                }
+                p.setOpacity(0.75);
+                p.drawImage(dstRect.topLeft(), m_bgImage, srcRect);
+                p.setOpacity(1.0);
+                p.restore();
+            }
+        }
+
+        p.setBrush(Qt::NoBrush);
+        QPen holePen(QColor(255, 120, 0, 220), 2.0 / std::max<qreal>(m_scale, 0.001));
+        holePen.setStyle(Qt::DashLine);
+        p.setPen(holePen);
+        p.drawRect(m_blackholeCopyHoleRect);
+
+        QPen srcPen(QColor(70, 200, 255, 230), 2.0 / std::max<qreal>(m_scale, 0.001));
+        p.setPen(srcPen);
+        p.drawRect(m_blackholeCopySourceRect);
+
+        const QPen textPen(QColor(70, 200, 255, 230));
+        p.setPen(textPen);
+        const QPointF textPos = m_blackholeCopySourceRect.topLeft() +
+                                QPointF(4.0 / std::max<qreal>(m_scale, 0.001),
+                                        14.0 / std::max<qreal>(m_scale, 0.001));
+        p.drawText(textPos, QStringLiteral("拖动取样框，松手应用"));
+    }
+
     // 实体元素（占位）：后续可替换为真实数据
     for (int i = 0; i < m_entities.size(); ++i) {
         const auto& ent = m_entities[i];
@@ -1280,6 +1524,13 @@ void EditorCanvas::paintEvent(QPaintEvent* e) {
                 p.drawRect(ent.rect.adjusted(-2, -2, 2, 2));
             }
         }
+        if (!m_presentationPreviewMode && ent.id == m_selectedBlackholeEntityId && !ent.cutoutPolygonWorld.isEmpty()) {
+            p.setBrush(Qt::NoBrush);
+            QPen holePen(QColor(70, 200, 255, 230), 2.2 / std::max<qreal>(m_scale, 0.001));
+            holePen.setStyle(Qt::DashLine);
+            p.setPen(holePen);
+            p.drawPath(entity_cutout::pathFromWorldPolygon(ent.cutoutPolygonWorld));
+        }
         if (m_presentationPreviewMode && ent.opacity > 0.001) {
             const bool showHover = (i == m_presHoverEntityIndex);
             const bool showFocus = (i == m_presFocusedEntityIndex);
@@ -1398,7 +1649,47 @@ void EditorCanvas::paintEvent(QPaintEvent* e) {
         p.drawLine(QPointF(0, axisY), QPointF(width(), axisY));   // X 轴（水平）
         p.drawLine(QPointF(axisX, 0), QPointF(axisX, height()));  // Y 轴（垂直）
 
-        const int step = 100;
+        // 根据缩放与视口大小动态调整刻度密度：使相邻刻度在屏幕上保持“够密但不挤”的间距
+        auto niceStep = [](double raw) -> double {
+            if (!(raw > 0.0) || !std::isfinite(raw)) {
+                return 1.0;
+            }
+            const double p10 = std::pow(10.0, std::floor(std::log10(raw)));
+            const double m = raw / p10; // 1..10
+            double n = 1.0;
+            if (m <= 1.0) n = 1.0;
+            else if (m <= 2.0) n = 2.0;
+            else if (m <= 5.0) n = 5.0;
+            else n = 10.0;
+            return n * p10;
+        };
+
+        const double sView = std::max<double>(0.001, double(m_scale));
+        const double targetTickPx = 86.0;              // 目标：相邻刻度约 86px
+        const double minTickPx = 44.0;                 // 太密则自动放大 step
+        const double stepWorld = std::max(1.0, niceStep(targetTickPx / sView));
+        const double stepPx = stepWorld * sView;
+        const int labelEvery = (stepPx < minTickPx) ? int(std::ceil(minTickPx / std::max(1.0, stepPx))) : 1;
+
+        auto visibleWorldXRange = [&]() -> std::pair<double, double> {
+            const QPointF w0 = viewToWorld(QPointF(0, 0));
+            const QPointF w1 = viewToWorld(QPointF(width(), height()));
+            double a = std::min<double>(w0.x(), w1.x());
+            double b = std::max<double>(w0.x(), w1.x());
+            a = std::clamp(a, 0.0, double(m_bgPixmap.width()));
+            b = std::clamp(b, 0.0, double(m_bgPixmap.width()));
+            return {a, b};
+        };
+        auto visibleWorldYRange = [&]() -> std::pair<double, double> {
+            const QPointF w0 = viewToWorld(QPointF(0, 0));
+            const QPointF w1 = viewToWorld(QPointF(width(), height()));
+            double a = std::min<double>(w0.y(), w1.y());
+            double b = std::max<double>(w0.y(), w1.y());
+            a = std::clamp(a, 0.0, double(m_bgPixmap.height()));
+            b = std::clamp(b, 0.0, double(m_bgPixmap.height()));
+            return {a, b};
+        };
+
         QPen tickPen(QColor(20, 20, 20, 140));
         tickPen.setWidth(1);
         p.setPen(tickPen);
@@ -1409,28 +1700,44 @@ void EditorCanvas::paintEvent(QPaintEvent* e) {
         }
 
         // X 轴：用 y=0 的世界线映射到 view-x，并把刻度画在 axisY 上
-        for (int x = 0; x <= m_bgPixmap.width(); x += step) {
+        {
-            const QPointF vx = worldToView(QPointF(x, 0));
+            const auto [xmin, xmax] = visibleWorldXRange();
+            const double start = std::floor(xmin / stepWorld) * stepWorld;
+            int iTick = 0;
+            for (double x = start; x <= xmax + 1e-9; x += stepWorld, ++iTick) {
+                const double xc = std::clamp(x, 0.0, double(m_bgPixmap.width()));
+                const QPointF vx = worldToView(QPointF(xc, 0));
             if (vx.x() < -50 || vx.x() > width() + 50) {
                 continue;
             }
             const qreal tx = std::clamp(vx.x(), 0.0, static_cast<qreal>(width()));
             p.drawLine(QPointF(tx, axisY), QPointF(tx, axisY + 6));
             if (m_axisLabelsVisible) {
-                p.drawText(QPointF(tx + 2, axisY + 18), QString::number(x));
+                if (labelEvery <= 1 || (iTick % labelEvery) == 0) {
+                    p.drawText(QPointF(tx + 2, axisY + 18), QString::number(int(std::lround(xc))));
+                }
+            }
             }
         }
 
         // Y 轴：用 x=0 的世界线映射到 view-y，并把刻度画在 axisX 上
-        for (int y = 0; y <= m_bgPixmap.height(); y += step) {
+        {
-            const QPointF vy = worldToView(QPointF(0, y));
+            const auto [ymin, ymax] = visibleWorldYRange();
+            const double start = std::floor(ymin / stepWorld) * stepWorld;
+            int iTick = 0;
+            for (double y = start; y <= ymax + 1e-9; y += stepWorld, ++iTick) {
+                const double yc = std::clamp(y, 0.0, double(m_bgPixmap.height()));
+                const QPointF vy = worldToView(QPointF(0, yc));
             if (vy.y() < -50 || vy.y() > height() + 50) {
                 continue;
             }
             const qreal ty = std::clamp(vy.y(), 0.0, static_cast<qreal>(height()));
             p.drawLine(QPointF(axisX, ty), QPointF(axisX + 6, ty));
             if (m_axisLabelsVisible) {
-                p.drawText(QPointF(axisX + 10, ty - 2), QString::number(y));
+                if (labelEvery <= 1 || (iTick % labelEvery) == 0) {
+                    p.drawText(QPointF(axisX + 10, ty - 2), QString::number(int(std::lround(yc))));
+                }
+            }
             }
         }
     }
@@ -1489,7 +1796,7 @@ void EditorCanvas::mousePressEvent(QMouseEvent* e) {
     if (!m_depthAbsPath.isEmpty()) {
         if (m_depthDirty) {
             m_depthDirty = false;
-            QImage img(m_depthAbsPath);
+            QImage img = readImageTolerant(m_depthAbsPath);
             m_depthImage8 = img.isNull() ? QImage() : img.convertToFormat(QImage::Format_Grayscale8);
         }
         if (!m_depthImage8.isNull()) {
@@ -1502,6 +1809,25 @@ void EditorCanvas::mousePressEvent(QMouseEvent* e) {
     }
     emit hoveredWorldPosDepthChanged(wp0, z0);
 
+    if (m_blackholeCopyResolveActive) {
+        if (e->button() == Qt::LeftButton) {
+            QRectF src = m_blackholeCopySourceRect;
+            if (!src.contains(wp0)) {
+                src.moveCenter(wp0);
+                src = clampRectTopLeftToBounds(src, worldRectOfBackground());
+                m_blackholeCopySourceRect = src;
+            }
+            m_blackholeCopyDragging = true;
+            m_blackholeCopyDragOffset = wp0 - m_blackholeCopySourceRect.topLeft();
+            updateCursor();
+            update();
+            e->accept();
+            return;
+        }
+        e->accept();
+        return;
+    }
+
     if (m_presentationPreviewMode) {
         if (e->button() == Qt::LeftButton) {
             const int hit = hitTestEntity(wp0);
@@ -1734,7 +2060,7 @@ void EditorCanvas::mouseMoveEvent(QMouseEvent* e) {
     if (!m_depthAbsPath.isEmpty()) {
         if (m_depthDirty) {
             m_depthDirty = false;
-            QImage img(m_depthAbsPath);
+            QImage img = readImageTolerant(m_depthAbsPath);
             m_depthImage8 = img.isNull() ? QImage() : img.convertToFormat(QImage::Format_Grayscale8);
         }
         if (!m_depthImage8.isNull()) {
@@ -1747,6 +2073,18 @@ void EditorCanvas::mouseMoveEvent(QMouseEvent* e) {
     }
     emit hoveredWorldPosDepthChanged(wp, z);
 
+    if (m_blackholeCopyResolveActive) {
+        if (m_blackholeCopyDragging && (e->buttons() & Qt::LeftButton)) {
+            QRectF src = m_blackholeCopySourceRect;
+            src.moveTopLeft(wp - m_blackholeCopyDragOffset);
+            src = clampRectTopLeftToBounds(src, worldRectOfBackground());
+            m_blackholeCopySourceRect = src;
+            update();
+        }
+        e->accept();
+        return;
+    }
+
     if (m_presentationPreviewMode) {
         const int h = hitTestEntity(wp);
         if (h != m_presHoverEntityIndex) {
@@ -1849,7 +2187,7 @@ void EditorCanvas::mouseMoveEvent(QMouseEvent* e) {
 
                 if (!m_depthAbsPath.isEmpty() && m_depthDirty) {
                     m_depthDirty = false;
-                    QImage img(m_depthAbsPath);
+                    QImage img = readImageTolerant(m_depthAbsPath);
                     m_depthImage8 = img.isNull() ? QImage() : img.convertToFormat(QImage::Format_Grayscale8);
                 }
                 if (!m_depthImage8.isNull()) {
@@ -1901,6 +2239,18 @@ void EditorCanvas::mouseMoveEvent(QMouseEvent* e) {
 }
 
 void EditorCanvas::mouseReleaseEvent(QMouseEvent* e) {
+    if (m_blackholeCopyResolveActive && e->button() == Qt::LeftButton) {
+        if (m_blackholeCopyDragging) {
+            m_blackholeCopyDragging = false;
+            const QPointF delta = m_blackholeCopySourceRect.topLeft() - m_blackholeCopyHoleRect.topLeft();
+            emit requestResolveBlackholeCopy(
+                m_blackholeCopyEntityId,
+                QPoint(static_cast<int>(std::round(delta.x())), static_cast<int>(std::round(delta.y()))));
+        }
+        cancelBlackholeCopyResolve();
+        e->accept();
+        return;
+    }
     if (e->button() == Qt::LeftButton || e->button() == Qt::MiddleButton) {
         if (m_presentationPreviewMode && e->button() == Qt::LeftButton) {
             if (m_presBgPanSession && m_presBgDragDist < 8.0) {
@@ -2016,6 +2366,11 @@ void EditorCanvas::wheelEvent(QWheelEvent* e) {
 }
 
 void EditorCanvas::keyPressEvent(QKeyEvent* e) {
+    if (m_blackholeCopyResolveActive && e->key() == Qt::Key_Escape) {
+        cancelBlackholeCopyResolve();
+        e->accept();
+        return;
+    }
     if (m_presentationPreviewMode && e->key() == Qt::Key_Escape) {
         clearPresentationEntityFocus();
         e->accept();

client/gui/editor/EditorCanvas.h

@@ -5,6 +5,7 @@
 #include <QByteArray>
 #include <QJsonArray>
 #include <QPixmap>
+#include <QPoint>
 #include <QPointF>
 #include <QImage>
 #include <QPainterPath>
@@ -85,6 +86,12 @@ public:
 
     void selectEntityById(const QString& id);
     void clearEntitySelection();
+    void selectBlackholeByEntityId(const QString& entityId);
+    void clearBlackholeSelection();
+    bool startBlackholeCopyResolve(const QString& entityId);
+    void cancelBlackholeCopyResolve();
+    /// 背景图片文件内容被外部写盘更新（路径未变）时，强制重新加载缓存
+    void notifyBackgroundContentChanged();
 
     // 与动画求值一致的原点/缩放（用于 K 帧与自动关键帧）
     QPointF selectedAnimatedOriginWorld() const;
@@ -115,6 +122,7 @@ signals:
     void requestFinalizePendingEntity(const QVector<QPointF>& polyWorld);
     void requestMoveEntity(const QString& id, const QPointF& delta);
     void requestMoveTool(const QString& id, const QPointF& delta);
+    void requestResolveBlackholeCopy(const QString& entityId, const QPoint& sourceOffsetPx);
     void entityDragActiveChanged(bool on);
     void selectedEntityPreviewChanged(const QString& id, int depth, const QPointF& originWorld);
     /// 预览模式下点击实体：anchorView 为实体质心在视图中的位置，用于摆放介绍浮层
@@ -171,6 +179,7 @@ private:
         QPointF animatedOriginWorld;
         double animatedDepthScale01 = 0.5;
         double opacity = 1.0; // 0..1（由可见性轨道求值）
+        bool blackholeVisible = true;
     };
     int hitTestEntity(const QPointF& worldPos) const;
 
@@ -186,7 +195,7 @@ private:
     mutable QPixmap m_bgPixmap;
     mutable bool m_pixmapDirty = true;
     mutable QImage m_bgImage;          // 原背景（用于抠图/填充）
-    mutable QImage m_bgImageCutout;    // 抠图后的背景（实体区域填黑）
+    mutable QImage m_bgImageCutout;    // 抠图后的背景（黑洞区域填黑）
     mutable bool m_bgImageDirty = true;
     mutable bool m_bgCutoutDirty = true;
 
@@ -229,6 +238,13 @@ private:
     qint64 m_lastPreviewEmitMs = 0;
     qint64 m_lastDepthScaleRecalcMs = 0;
     int m_selectedEntity = -1;
+    QString m_selectedBlackholeEntityId;
+    bool m_blackholeCopyResolveActive = false;
+    QString m_blackholeCopyEntityId;
+    QRectF m_blackholeCopyHoleRect;
+    QRectF m_blackholeCopySourceRect;
+    bool m_blackholeCopyDragging = false;
+    QPointF m_blackholeCopyDragOffset;
     int m_selectedTool = -1;
     bool m_draggingTool = false;
     QPointF m_toolDragOffsetOriginWorld;

client/gui/main_window/MainWindow.cpp

@@ -2,6 +2,7 @@
 #include "dialogs/AboutWindow.h"
 #include "dialogs/CancelableTaskDialog.h"
 #include "dialogs/EntityFinalizeDialog.h"
+#include "dialogs/BlackholeResolveDialog.h"
 #include "editor/EditorCanvas.h"
 #include "editor/EntityCutoutUtils.h"
 #include "dialogs/ImageCropDialog.h"
@@ -10,6 +11,7 @@
 #include "widgets/ToolOptionPopup.h"
 #include "params/ParamControls.h"
 #include "props/BackgroundPropertySection.h"
+#include "props/BlackholePropertySection.h"
 #include "props/EntityPropertySection.h"
 #include "props/ToolPropertySection.h"
 #include "timeline/TimelineWidget.h"
@@ -87,9 +89,9 @@ constexpr int kRightDockMinimumWidth = 80;
 /// 列宽小于此值时自动隐藏右侧两 dock
 constexpr int kRightDockAutoHideBelow = 92;
 /// 右侧 dock 列最大宽度，避免过宽挤占画布
-constexpr int kRightDockMaximumWidth = 288;
+constexpr int kRightDockMaximumWidth = 252;
 /// 属性区表单内容最大宽度（dock 仍可略宽，两侧留白，避免 SpinBox 被拉得过开）
-constexpr int kPropertyPanelContentMaxWidth = 268;
+constexpr int kPropertyPanelContentMaxWidth = 232;
 /// 启动时垂直分割高度：项目树较矮、属性区较高
 constexpr int kProjectTreeDockStartupHeight = 148;
 constexpr int kPropertiesDockStartupHeight = 392;
@@ -1185,6 +1187,14 @@ void MainWindow::createProjectTreeDock() {
                     showBackgroundContextMenu(m_projectTree->viewport()->mapToGlobal(pos));
                     return;
                 }
+                const QString kind = item->data(0, Qt::UserRole).toString();
+                if (kind == QStringLiteral("blackhole")) {
+                    const QString id = item->data(0, Qt::UserRole + 1).toString();
+                    if (!id.isEmpty()) {
+                        showBlackholeContextMenu(m_projectTree->viewport()->mapToGlobal(pos), id);
+                    }
+                    return;
+                }
             });
     connect(m_projectTree, &QTreeWidget::itemClicked, this, &MainWindow::onProjectTreeItemClicked);
     static_cast<ProjectTreeWidget*>(m_projectTree)->onNodeParentDropRequested =
@@ -1280,15 +1290,17 @@ void MainWindow::createProjectTreeDock() {
                                       Qt::BottomDockWidgetArea | Qt::TopDockWidgetArea);
     m_dockProperties->setFeatures(QDockWidget::DockWidgetMovable | QDockWidget::DockWidgetFloatable |
                                   QDockWidget::DockWidgetClosable);
-    m_dockProperties->setMinimumWidth(236);
+    m_dockProperties->setMinimumWidth(200);
 
     m_bgPropertySection = new gui::BackgroundPropertySection();
+    m_blackholePropertySection = new gui::BlackholePropertySection();
     m_entityPropertySection = new gui::EntityPropertySection();
     m_toolPropertySection = new gui::ToolPropertySection();
     m_propertyStack = new QStackedWidget();
     m_propertyStack->setContentsMargins(4, 4, 4, 4);
     m_propertyStack->setMaximumWidth(kPropertyPanelContentMaxWidth);
     m_propertyStack->addWidget(m_bgPropertySection);
+    m_propertyStack->addWidget(m_blackholePropertySection);
     m_propertyStack->addWidget(m_entityPropertySection);
     m_propertyStack->addWidget(m_toolPropertySection);
 
@@ -1336,7 +1348,30 @@ void MainWindow::createProjectTreeDock() {
         if (m_selectedEntityId.isEmpty() || !m_editorCanvas) return;
         const double s = m_editorCanvas->selectedCombinedScale();
         if (s <= 1e-9) return;
-        if (!m_workspace.reanchorEntityPivot(m_selectedEntityId, m_currentFrame, QPointF(x, y), s)) return;
+        QPointF targetPivot(x, y);
+        QString parentId;
+        for (const auto& e : m_workspace.entities()) {
+            if (e.id == m_selectedEntityId) {
+                parentId = e.parentId;
+                break;
+            }
+        }
+        if (!parentId.isEmpty()) {
+            const auto rf = core::eval::evaluateAtFrame(m_workspace.project(), m_currentFrame, 10);
+            for (const auto& pe : rf.entities) {
+                if (pe.entity.id == parentId) {
+                    targetPivot += pe.entity.originWorld;
+                    break;
+                }
+            }
+            for (const auto& pt : rf.tools) {
+                if (pt.tool.id == parentId) {
+                    targetPivot += pt.tool.originWorld;
+                    break;
+                }
+            }
+        }
+        if (!m_workspace.reanchorEntityPivot(m_selectedEntityId, m_currentFrame, targetPivot, s)) return;
         refreshEditorPage();
         refreshDopeSheet();
     });
@@ -1344,8 +1379,31 @@ void MainWindow::createProjectTreeDock() {
         if (m_selectedEntityId.isEmpty() || !m_editorCanvas) return;
         const double s = m_editorCanvas->selectedCombinedScale();
         if (s <= 1e-9) return;
+        QPointF targetCentroid(x, y);
+        QString parentId;
+        for (const auto& e : m_workspace.entities()) {
+            if (e.id == m_selectedEntityId) {
+                parentId = e.parentId;
+                break;
+            }
+        }
+        if (!parentId.isEmpty()) {
+            const auto rf = core::eval::evaluateAtFrame(m_workspace.project(), m_currentFrame, 10);
+            for (const auto& pe : rf.entities) {
+                if (pe.entity.id == parentId) {
+                    targetCentroid += pe.entity.originWorld;
+                    break;
+                }
+            }
+            for (const auto& pt : rf.tools) {
+                if (pt.tool.id == parentId) {
+                    targetCentroid += pt.tool.originWorld;
+                    break;
+                }
+            }
+        }
         const bool autoKey = m_chkAutoKeyframe && m_chkAutoKeyframe->isChecked();
-        if (!m_workspace.moveEntityCentroidTo(m_selectedEntityId, m_currentFrame, QPointF(x, y), s, autoKey)) return;
+        if (!m_workspace.moveEntityCentroidTo(m_selectedEntityId, m_currentFrame, targetCentroid, s, autoKey)) return;
         refreshEditorPage();
         refreshDopeSheet();
     });
@@ -1410,6 +1468,46 @@ void MainWindow::createProjectTreeDock() {
         m_workspace.setToolAlign(m_selectedToolId, a);
         refreshEditorPage();
     });
+    connect(m_toolPropertySection, &gui::ToolPropertySection::positionEdited, this, [this](double x, double y) {
+        if (m_selectedToolId.isEmpty() || !m_workspace.isOpen()) return;
+        const int f = std::clamp(m_currentFrame, 0, core::Project::kClipFixedFrames - 1);
+        const auto rf = core::eval::evaluateAtFrame(m_workspace.project(), f, 10);
+        QPointF currentWorld;
+        QPointF parentWorld;
+        QString parentId;
+        bool found = false;
+        for (const auto& t : rf.tools) {
+            if (t.tool.id == m_selectedToolId) {
+                currentWorld = t.tool.originWorld;
+                parentId = t.tool.parentId;
+                found = true;
+                break;
+            }
+        }
+        if (!found) return;
+        if (!parentId.isEmpty()) {
+            for (const auto& e : rf.entities) {
+                if (e.entity.id == parentId) {
+                    parentWorld = e.entity.originWorld;
+                    break;
+                }
+            }
+            if (qFuzzyIsNull(parentWorld.x()) && qFuzzyIsNull(parentWorld.y())) {
+                for (const auto& t : rf.tools) {
+                    if (t.tool.id == parentId) {
+                        parentWorld = t.tool.originWorld;
+                        break;
+                    }
+                }
+            }
+        }
+        const QPointF targetWorld = parentId.isEmpty() ? QPointF(x, y) : (parentWorld + QPointF(x, y));
+        const QPointF delta = targetWorld - currentWorld;
+        if (qFuzzyIsNull(delta.x()) && qFuzzyIsNull(delta.y())) return;
+        if (!m_workspace.moveToolBy(m_selectedToolId, delta, f, true)) return;
+        refreshEditorPage();
+        refreshDopeSheet();
+    });
     connect(m_toolPropertySection, &gui::ToolPropertySection::visibleToggled, this, [this](bool on) {
         if (m_selectedToolId.isEmpty() || !m_workspace.isOpen()) return;
         const int f = std::clamp(m_currentFrame, 0, core::Project::kClipFixedFrames - 1);
@@ -1468,7 +1566,8 @@ void MainWindow::createProjectTreeDock() {
 }
 
 void MainWindow::refreshPropertyPanel() {
-    if (!m_bgPropertySection || !m_entityPropertySection || !m_toolPropertySection || !m_propertyStack) {
+    if (!m_bgPropertySection || !m_blackholePropertySection || !m_entityPropertySection ||
+        !m_toolPropertySection || !m_propertyStack) {
         return;
     }
 
@@ -1556,6 +1655,15 @@ void MainWindow::refreshPropertyPanel() {
         gui::ToolPropertyUiState st;
         const int f = std::clamp(m_currentFrame, 0, core::Project::kClipFixedFrames - 1);
         const auto* clip = activeClipForUi();
+        QString parentId;
+        const auto rf = core::eval::evaluateAtFrame(m_workspace.project(), m_currentFrame, 10);
+        for (const auto& rt : rf.tools) {
+            if (rt.tool.id == m_selectedToolId) {
+                st.position = rt.tool.originWorld;
+                parentId = rt.tool.parentId;
+                break;
+            }
+        }
         for (const auto& t : m_workspace.tools()) {
             if (t.id == m_selectedToolId) {
                 st.displayName = t.displayName.isEmpty() ? t.id : t.displayName;
@@ -1576,12 +1684,59 @@ void MainWindow::refreshPropertyPanel() {
                 break;
             }
         }
+        if (!parentId.isEmpty()) {
+            QPointF parentWorld;
+            for (const auto& pe : rf.entities) {
+                if (pe.entity.id == parentId) {
+                    parentWorld = pe.entity.originWorld;
+                    break;
+                }
+            }
+            if (qFuzzyIsNull(parentWorld.x()) && qFuzzyIsNull(parentWorld.y())) {
+                for (const auto& pt : rf.tools) {
+                    if (pt.tool.id == parentId) {
+                        parentWorld = pt.tool.originWorld;
+                        break;
+                    }
+                }
+            }
+            st.position -= parentWorld;
+            st.parentRelativeMode = true;
+        }
         m_toolPropertySection->applyState(st);
         m_propertyStack->setCurrentWidget(m_toolPropertySection);
         m_dockProperties->setWindowTitle(QStringLiteral("属性 — 工具"));
         return;
     }
 
+    const bool holeUi = m_workspace.isOpen() && !m_selectedBlackholeEntityId.isEmpty();
+    if (holeUi) {
+        gui::BlackholePropertyUiState st;
+        for (const auto& e : m_workspace.entities()) {
+            if (e.id != m_selectedBlackholeEntityId) {
+                continue;
+            }
+            st.blackholeName = e.blackholeId.isEmpty() ? QStringLiteral("blackhole-%1").arg(e.id) : e.blackholeId;
+            st.statusText = e.blackholeVisible ? QStringLiteral("否") : QStringLiteral("是");
+            if (e.blackholeResolvedBy == QStringLiteral("copy_background")) {
+                st.methodText = QStringLiteral("复制背景其他区域");
+            } else if (e.blackholeResolvedBy == QStringLiteral("use_original_background")) {
+                st.methodText = QStringLiteral("使用原始背景");
+            } else if (e.blackholeResolvedBy == QStringLiteral("model_inpaint")) {
+                st.methodText = QStringLiteral("模型补全");
+            } else if (e.blackholeResolvedBy == QStringLiteral("pending")) {
+                st.methodText = QStringLiteral("待选择");
+            } else {
+                st.methodText = QStringLiteral("未选择");
+            }
+            break;
+        }
+        m_blackholePropertySection->applyState(st);
+        m_propertyStack->setCurrentWidget(m_blackholePropertySection);
+        m_dockProperties->setWindowTitle(QStringLiteral("属性 — 黑洞"));
+        return;
+    }
+
     const bool entUi = m_hasSelectedEntity && m_workspace.isOpen() && !m_selectedEntityId.isEmpty() && m_editorCanvas;
     if (!entUi) {
         m_entityPropertySection->clearDisconnected();
@@ -1595,6 +1750,7 @@ void MainWindow::refreshPropertyPanel() {
     double userScale = 1.0;
     bool ignoreDist = false;
     bool entVisible = true;
+    QString parentId;
     core::EntityIntroContent intro;
     const int f = std::clamp(m_currentFrame, 0, core::Project::kClipFixedFrames - 1);
     const auto* clip = activeClipForUi();
@@ -1604,6 +1760,7 @@ void MainWindow::refreshPropertyPanel() {
             userScale = e.userScale;
             intro = e.intro;
             ignoreDist = e.ignoreDistanceScale;
+            parentId = e.parentId;
             const QVector<core::Project::ToolKeyframeBool> keys =
                 (clip && clip->entityVisibilityKeys.contains(e.id))
                     ? clip->entityVisibilityKeys.value(e.id)
@@ -1621,6 +1778,27 @@ void MainWindow::refreshPropertyPanel() {
         QStringLiteral("%1（自动）").arg(m_editorCanvas->selectedDistanceScaleMultiplier(), 0, 'f', 3);
     st.pivot = m_editorCanvas->selectedAnimatedOriginWorld();
     st.centroid = m_editorCanvas->selectedEntityCentroidWorld();
+    if (!parentId.isEmpty()) {
+        QPointF parentWorld;
+        const auto rf = core::eval::evaluateAtFrame(m_workspace.project(), m_currentFrame, 10);
+        for (const auto& pe : rf.entities) {
+            if (pe.entity.id == parentId) {
+                parentWorld = pe.entity.originWorld;
+                break;
+            }
+        }
+        if (qFuzzyIsNull(parentWorld.x()) && qFuzzyIsNull(parentWorld.y())) {
+            for (const auto& pt : rf.tools) {
+                if (pt.tool.id == parentId) {
+                    parentWorld = pt.tool.originWorld;
+                    break;
+                }
+            }
+        }
+        st.pivot -= parentWorld;
+        st.centroid -= parentWorld;
+        st.parentRelativeMode = true;
+    }
     st.userScale = userScale;
     st.ignoreDistanceScale = ignoreDist;
     st.visible = entVisible;
@@ -1646,6 +1824,34 @@ void MainWindow::refreshEntityPropertyPanelFast() {
         QStringLiteral("%1（自动）").arg(m_editorCanvas->selectedDistanceScaleMultiplier(), 0, 'f', 3);
     st.pivot = m_editorCanvas->selectedAnimatedOriginWorld();
     st.centroid = m_editorCanvas->selectedEntityCentroidWorld();
+    QString parentId;
+    for (const auto& e : m_workspace.entities()) {
+        if (e.id == m_selectedEntityId) {
+            parentId = e.parentId;
+            break;
+        }
+    }
+    if (!parentId.isEmpty()) {
+        QPointF parentWorld;
+        const auto rf = core::eval::evaluateAtFrame(m_workspace.project(), m_currentFrame, 10);
+        for (const auto& pe : rf.entities) {
+            if (pe.entity.id == parentId) {
+                parentWorld = pe.entity.originWorld;
+                break;
+            }
+        }
+        if (qFuzzyIsNull(parentWorld.x()) && qFuzzyIsNull(parentWorld.y())) {
+            for (const auto& pt : rf.tools) {
+                if (pt.tool.id == parentId) {
+                    parentWorld = pt.tool.originWorld;
+                    break;
+                }
+            }
+        }
+        st.pivot -= parentWorld;
+        st.centroid -= parentWorld;
+        st.parentRelativeMode = true;
+    }
     st.userScale = m_editorCanvas->selectedUserScale();
     // ignoreDistanceScale 在拖动中不变更，fast path 不必更新（避免再遍历 entities）
     m_entityPropertySection->applyState(st);
@@ -1742,6 +1948,33 @@ void MainWindow::refreshProjectTree() {
                          });
     }
 
+    // 黑洞节点：挂在“背景”下，和实体渲染解耦（黑洞可见性独立于实体可见性）
+    QVector<const core::Project::Entity*> blackholeEnts;
+    blackholeEnts.reserve(sortedEnts.size());
+    for (const auto& e : sortedEnts) {
+        if (!e.cutoutPolygonWorld.isEmpty()) {
+            blackholeEnts.push_back(&e);
+        }
+    }
+    std::stable_sort(blackholeEnts.begin(), blackholeEnts.end(),
+                     [](const core::Project::Entity* a, const core::Project::Entity* b) {
+                         const QString an = a->displayName.isEmpty() ? a->id : a->displayName;
+                         const QString bn = b->displayName.isEmpty() ? b->id : b->displayName;
+                         return an < bn;
+                     });
+    for (const auto* e : blackholeEnts) {
+        auto* it = new QTreeWidgetItem(m_itemBackground);
+        const QString base = e->displayName.isEmpty() ? e->id : e->displayName;
+        const QString holeName =
+            e->blackholeId.isEmpty() ? QStringLiteral("blackhole-%1").arg(e->id) : e->blackholeId;
+        it->setText(1, QStringLiteral("黑洞 · %1").arg(base));
+        it->setToolTip(1, QStringLiteral("节点：%1").arg(holeName));
+        it->setTextAlignment(1, Qt::AlignRight | Qt::AlignVCenter);
+        it->setData(0, Qt::UserRole, QStringLiteral("blackhole"));
+        it->setData(0, Qt::UserRole + 1, e->id);  // 绑定实体 id，便于定位 cutout 多边形
+        it->setFlags(Qt::ItemIsSelectable | Qt::ItemIsEnabled);
+    }
+
     struct NodeRef {
         QString kind; // "entity" / "tool"
         QString id;
@@ -1845,7 +2078,9 @@ void MainWindow::syncProjectTreeFromCanvasSelection() {
     }
     m_syncingTreeSelection = true;
     m_projectTree->blockSignals(true);
-    if ((!m_hasSelectedEntity || m_selectedEntityId.isEmpty()) && (!m_hasSelectedTool || m_selectedToolId.isEmpty())) {
+    if ((!m_hasSelectedEntity || m_selectedEntityId.isEmpty()) &&
+        (!m_hasSelectedTool || m_selectedToolId.isEmpty()) &&
+        m_selectedBlackholeEntityId.isEmpty()) {
         m_projectTree->clearSelection();
     } else {
         QTreeWidgetItem* found = nullptr;
@@ -1861,6 +2096,11 @@ void MainWindow::syncProjectTreeFromCanvasSelection() {
                 found = node;
                 break;
             }
+            if (!m_selectedBlackholeEntityId.isEmpty() && kind == QStringLiteral("blackhole") &&
+                id == m_selectedBlackholeEntityId) {
+                found = node;
+                break;
+            }
         }
         if (found) {
             m_projectTree->setCurrentItem(found);
@@ -1882,6 +2122,10 @@ void MainWindow::onProjectTreeItemClicked(QTreeWidgetItem* item, int column) {
     if (kind == QStringLiteral("entity")) {
         const QString id = item->data(0, Qt::UserRole + 1).toString();
         if (!id.isEmpty()) {
+            m_selectedBlackholeEntityId.clear();
+            if (m_editorCanvas) {
+                m_editorCanvas->clearBlackholeSelection();
+            }
             m_hasSelectedTool = false;
             m_selectedToolId.clear();
             if (m_timeline) {
@@ -1892,6 +2136,10 @@ void MainWindow::onProjectTreeItemClicked(QTreeWidgetItem* item, int column) {
     } else if (kind == QStringLiteral("tool")) {
         const QString id = item->data(0, Qt::UserRole + 1).toString();
         if (!id.isEmpty()) {
+            m_selectedBlackholeEntityId.clear();
+            if (m_editorCanvas) {
+                m_editorCanvas->clearBlackholeSelection();
+            }
             m_hasSelectedTool = true;
             m_selectedToolId = id;
             m_hasSelectedEntity = false;
@@ -1904,10 +2152,28 @@ void MainWindow::onProjectTreeItemClicked(QTreeWidgetItem* item, int column) {
             }
             refreshPropertyPanel();
         }
+    } else if (kind == QStringLiteral("blackhole")) {
+        const QString entityId = item->data(0, Qt::UserRole + 1).toString();
+        if (!entityId.isEmpty()) {
+            m_selectedBlackholeEntityId = entityId;
+            m_hasSelectedTool = false;
+            m_selectedToolId.clear();
+            m_hasSelectedEntity = false;
+            m_selectedEntityId.clear();
+            m_selectedEntityDisplayNameCache.clear();
+            if (m_editorCanvas) {
+                m_editorCanvas->clearEntitySelection();
+                m_editorCanvas->selectBlackholeByEntityId(entityId);
+            }
+            updateTimelineTracks();
+            refreshPropertyPanel();
+        }
     } else if (kind == QStringLiteral("background")) {
+        m_selectedBlackholeEntityId.clear();
         m_hasSelectedTool = false;
         m_selectedToolId.clear();
         m_editorCanvas->clearEntitySelection();
+        m_editorCanvas->clearBlackholeSelection();
         updateTimelineTracks();
     }
 }
@@ -2394,6 +2660,7 @@ void MainWindow::rebuildCentralPages() {
     connect(m_editorCanvas, &EditorCanvas::selectedEntityChanged, this, [this](bool hasSel, const QString& id, int depth, const QPointF& origin) {
         m_hasSelectedEntity = hasSel;
         m_selectedEntityId = id;
+        m_selectedBlackholeEntityId.clear();
         m_selectedEntityDepth = depth;
         m_selectedEntityOrigin = origin;
         m_hasSelectedTool = false;
@@ -2418,6 +2685,7 @@ void MainWindow::rebuildCentralPages() {
         Q_UNUSED(origin);
         m_hasSelectedTool = hasSel;
         m_selectedToolId = id;
+        m_selectedBlackholeEntityId.clear();
         if (hasSel) {
             m_hasSelectedEntity = false;
             m_selectedEntityId.clear();
@@ -2475,6 +2743,11 @@ void MainWindow::rebuildCentralPages() {
                 }
             }
         }
+        ent.blackholeVisible = true;
+        if (ent.blackholeId.isEmpty() && !ent.id.isEmpty()) {
+            ent.blackholeId = QStringLiteral("blackhole-%1").arg(ent.id);
+        }
+        ent.blackholeResolvedBy = QStringLiteral("pending");
         if (!m_workspace.addEntity(ent, img)) {
             QMessageBox::warning(this, QStringLiteral("实体"), QStringLiteral("保存实体失败。"));
             return;
@@ -2768,6 +3041,11 @@ void MainWindow::rebuildCentralPages() {
         if (ent.displayName.isEmpty()) {
             // 允许空：界面会用 id 展示
         }
+        ent.blackholeVisible = true;
+        if (ent.blackholeId.isEmpty() && !ent.id.isEmpty()) {
+            ent.blackholeId = QStringLiteral("blackhole-%1").arg(ent.id);
+        }
+        ent.blackholeResolvedBy = QStringLiteral("pending");
 
         QImage bg(m_workspace.backgroundAbsolutePath());
         if (!bg.isNull() && bg.format() != QImage::Format_ARGB32_Premultiplied) {
@@ -2812,6 +3090,26 @@ void MainWindow::rebuildCentralPages() {
         refreshProjectTree();
         updateUiEnabledState();
     });
+    connect(m_editorCanvas, &EditorCanvas::requestResolveBlackholeCopy, this,
+            [this](const QString& entityId, const QPoint& sourceOffsetPx) {
+                if (!m_workspace.resolveBlackholeByCopyBackground(entityId, sourceOffsetPx, true)) {
+                    QMessageBox::warning(
+                        this,
+                        QStringLiteral("黑洞修复"),
+                        QStringLiteral("复制背景区域失败。请重新拖动取样框，确保采样区域在背景范围内。"));
+                    return;
+                }
+                statusBar()->showMessage(QStringLiteral("黑洞已通过背景复制修复"));
+                refreshProjectTree();
+                updateUiEnabledState();
+                if (m_editorCanvas) {
+                    m_editorCanvas->notifyBackgroundContentChanged();
+                }
+                refreshEditorPage();
+                if (m_previewRequested) {
+                    refreshPreviewPage();
+                }
+            });
 
     connect(m_editorCanvas, &EditorCanvas::presentationEntityIntroRequested, this,
             [this](const QString& id, QPointF anchorView) {
@@ -3194,7 +3492,8 @@ void MainWindow::refreshDopeSheet() {
                 break;
             }
         }
-        addChannel(QStringLiteral("位置"), 0, hasLoc);
+        const QString locLabel = e.parentId.isEmpty() ? QStringLiteral("位置") : QStringLiteral("相对位置");
+        addChannel(locLabel, 0, hasLoc);
         addChannel(QStringLiteral("缩放"), 1, hasSc);
         addChannel(QStringLiteral("图像"), 2, hasIm);
     }
@@ -3221,6 +3520,70 @@ void MainWindow::showBackgroundContextMenu(const QPoint& globalPos) {
     refreshPreviewPage();
 }
 
+void MainWindow::showBlackholeContextMenu(const QPoint& globalPos, const QString& entityId) {
+    if (entityId.isEmpty() || !m_workspace.isOpen()) {
+        return;
+    }
+
+    m_selectedBlackholeEntityId = entityId;
+    if (m_editorCanvas) {
+        m_editorCanvas->selectBlackholeByEntityId(entityId);
+    }
+    syncProjectTreeFromCanvasSelection();
+
+    QString holeLabel = entityId;
+    for (const auto& e : m_workspace.entities()) {
+        if (e.id == entityId) {
+            if (!e.blackholeId.isEmpty()) {
+                holeLabel = e.blackholeId;
+            } else {
+                holeLabel = QStringLiteral("blackhole-%1").arg(entityId);
+            }
+            break;
+        }
+    }
+
+    QMenu menu(this);
+    QAction* actResolve = menu.addAction(QStringLiteral("修复"));
+    QAction* chosen = menu.exec(globalPos);
+    if (!chosen || chosen != actResolve) {
+        return;
+    }
+
+    BlackholeResolveDialog dlg(holeLabel, this);
+    if (dlg.exec() != QDialog::Accepted) {
+        return;
+    }
+
+    bool ok = false;
+    if (dlg.selectedAlgorithm() == BlackholeResolveDialog::Algorithm::CopyBackgroundRegion) {
+        if (!m_editorCanvas || !m_editorCanvas->startBlackholeCopyResolve(entityId)) {
+            QMessageBox::warning(
+                this,
+                QStringLiteral("黑洞修复"),
+                QStringLiteral("无法进入画布拖动模式，请确认黑洞与背景数据有效。"));
+            return;
+        }
+        statusBar()->showMessage(QStringLiteral("拖动画布中的青色取样框，松开鼠标即应用；Esc 取消"));
+        return;
+    } else {
+        ok = m_workspace.resolveBlackholeByUseOriginalBackground(entityId);
+        if (!ok) {
+            QMessageBox::warning(this, QStringLiteral("黑洞修复"), QStringLiteral("应用“使用原始背景”失败。"));
+        }
+    }
+
+    if (ok) {
+        statusBar()->showMessage(QStringLiteral("黑洞修复已应用"));
+        refreshProjectTree();
+        updateUiEnabledState();
+        refreshEditorPage();
+        if (m_previewRequested) {
+            refreshPreviewPage();
+        }
+    }
+}
+
 
 void MainWindow::onNewProject() {
     if (m_workspace.isOpen()) {

client/gui/main_window/MainWindow.h

@@ -34,6 +34,7 @@ class EditorCanvas;
 class TimelineWidget;
 namespace gui {
 class BackgroundPropertySection;
+class BlackholePropertySection;
 class EntityPropertySection;
 class ToolPropertySection;
 class EntityIntroPopup;
@@ -100,6 +101,7 @@ private:
 
     void showProjectRootContextMenu(const QPoint& globalPos);
     void showBackgroundContextMenu(const QPoint& globalPos);
+    void showBlackholeContextMenu(const QPoint& globalPos, const QString& entityId);
     void rebuildCentralPages();
     void showWelcomePage();
     void showEditorPage();
@@ -125,6 +127,7 @@ private:
     QComboBox* m_modeSelector = nullptr;
     QStackedWidget* m_propertyStack = nullptr;
     gui::BackgroundPropertySection* m_bgPropertySection = nullptr;
+    gui::BlackholePropertySection* m_blackholePropertySection = nullptr;
     gui::EntityPropertySection* m_entityPropertySection = nullptr;
     gui::ToolPropertySection* m_toolPropertySection = nullptr;
     QToolButton* m_btnCreateEntity = nullptr;
@@ -172,6 +175,7 @@ private:
     QPointF m_selectedEntityOrigin;
     QString m_selectedEntityId;
     QString m_selectedToolId;
+    QString m_selectedBlackholeEntityId;
     QString m_selectedEntityDisplayNameCache;
     QString m_bgAbsCache;
     QString m_bgSizeTextCache;

client/gui/params/ParamControls.cpp

@@ -24,7 +24,7 @@ Float01ParamControl::Float01ParamControl(QWidget* parent)
     m_spin->setRange(0.0, 1.0);
     m_spin->setDecimals(3);
     m_spin->setSingleStep(0.01);
-    m_spin->setMinimumWidth(84);
+    m_spin->setMinimumWidth(72);
     row->addWidget(m_spin);
 
     connect(m_slider, &QSlider::valueChanged, this, [this]() { syncFromSlider(); });
@@ -79,14 +79,14 @@ Vec2ParamControl::Vec2ParamControl(QWidget* parent)
     m_x->setRange(-1e9, 1e9);
     m_x->setDecimals(2);
     m_x->setSingleStep(1.0);
-    m_x->setMinimumWidth(88);
+    m_x->setMinimumWidth(72);
     row->addWidget(m_x, 1);
 
     m_y = new QDoubleSpinBox(this);
     m_y->setRange(-1e9, 1e9);
     m_y->setDecimals(2);
     m_y->setSingleStep(1.0);
-    m_y->setMinimumWidth(88);
+    m_y->setMinimumWidth(72);
     row->addWidget(m_y, 1);
 
     connect(m_x, qOverload<double>(&QDoubleSpinBox::valueChanged), this, [this]() { emitIfChanged(); });

client/gui/props/BlackholePropertySection.cpp

@@ -0,0 +1,45 @@
+#include "props/BlackholePropertySection.h"
+
+#include <QFormLayout>
+#include <QLabel>
+#include <QVBoxLayout>
+
+namespace gui {
+
+BlackholePropertySection::BlackholePropertySection(QWidget* parent)
+    : PropertySectionWidget(parent) {
+    auto* lay = new QVBoxLayout(this);
+    lay->setContentsMargins(0, 0, 0, 0);
+    lay->setSpacing(6);
+
+    auto* form = new QFormLayout();
+    form->setContentsMargins(0, 0, 0, 0);
+    form->setSpacing(6);
+
+    m_name = new QLabel(this);
+    m_status = new QLabel(this);
+    m_method = new QLabel(this);
+    m_method->setWordWrap(true);
+
+    form->addRow(QStringLiteral("黑洞"), m_name);
+    form->addRow(QStringLiteral("是否解决"), m_status);
+    form->addRow(QStringLiteral("解决方案"), m_method);
+
+    lay->addLayout(form);
+    lay->addStretch(1);
+}
+
+void BlackholePropertySection::clearDisconnected() {
+    if (m_name) m_name->setText(QStringLiteral("-"));
+    if (m_status) m_status->setText(QStringLiteral("-"));
+    if (m_method) m_method->setText(QStringLiteral("-"));
+}
+
+void BlackholePropertySection::applyState(const BlackholePropertyUiState& s) {
+    if (m_name) m_name->setText(s.blackholeName.isEmpty() ? QStringLiteral("-") : s.blackholeName);
+    if (m_status) m_status->setText(s.statusText.isEmpty() ? QStringLiteral("-") : s.statusText);
+    if (m_method) m_method->setText(s.methodText.isEmpty() ? QStringLiteral("-") : s.methodText);
+}
+
+}  // namespace gui
+

client/gui/props/BlackholePropertySection.h

@@ -0,0 +1,32 @@
+#pragma once
+
+#include "props/PropertySectionWidget.h"
+
+#include <QString>
+
+class QLabel;
+
+namespace gui {
+
+struct BlackholePropertyUiState {
+    QString blackholeName;
+    QString statusText;
+    QString methodText;
+};
+
+class BlackholePropertySection final : public PropertySectionWidget {
+    Q_OBJECT
+public:
+    explicit BlackholePropertySection(QWidget* parent = nullptr);
+
+    void clearDisconnected();
+    void applyState(const BlackholePropertyUiState& s);
+
+private:
+    QLabel* m_name = nullptr;
+    QLabel* m_status = nullptr;
+    QLabel* m_method = nullptr;
+};
+
+}  // namespace gui
+

client/gui/props/EntityPropertySection.cpp

@@ -40,13 +40,15 @@ EntityPropertySection::EntityPropertySection(QWidget* parent)
     form->addRow(QStringLiteral("深度"), m_depth);
     form->addRow(QStringLiteral("距离缩放"), m_distScale);
 
+    m_pivotLabel = new QLabel(QStringLiteral("中心坐标"), this);
     m_pivot = new Vec2ParamControl(this);
     m_pivot->setToolTip(QStringLiteral("枢轴在世界坐标中的位置（限制在轮廓包络内），用于重定位局部原点"));
-    form->addRow(QStringLiteral("中心坐标"), m_pivot);
+    form->addRow(m_pivotLabel, m_pivot);
 
+    m_centroidLabel = new QLabel(QStringLiteral("位置"), this);
     m_centroid = new Vec2ParamControl(this);
     m_centroid->setToolTip(QStringLiteral("实体几何质心的世界坐标；修改将整体平移实体"));
-    form->addRow(QStringLiteral("位置"), m_centroid);
+    form->addRow(m_centroidLabel, m_centroid);
 
     m_userScale = new QDoubleSpinBox(this);
     m_userScale->setRange(0.05, 20.0);
@@ -190,6 +192,14 @@ void EntityPropertySection::clearDisconnected() {
     if (m_distScale) m_distScale->setText(QStringLiteral("-"));
     if (m_pivot) m_pivot->setValue(0.0, 0.0);
     if (m_centroid) m_centroid->setValue(0.0, 0.0);
+    if (m_pivotLabel) m_pivotLabel->setText(QStringLiteral("中心坐标"));
+    if (m_centroidLabel) m_centroidLabel->setText(QStringLiteral("位置"));
+    if (m_pivot) {
+        m_pivot->setToolTip(QStringLiteral("枢轴在世界坐标中的位置（限制在轮廓包络内），用于重定位局部原点"));
+    }
+    if (m_centroid) {
+        m_centroid->setToolTip(QStringLiteral("实体几何质心的世界坐标；修改将整体平移实体"));
+    }
     if (m_userScale) {
         m_userScale->blockSignals(true);
         m_userScale->setValue(1.0);
@@ -239,6 +249,24 @@ void EntityPropertySection::applyState(const EntityPropertyUiState& s) {
     }
     if (m_depth) m_depth->setText(QString::number(s.depthZ));
     if (m_distScale) m_distScale->setText(s.distanceScaleText);
+    if (m_pivotLabel) {
+        m_pivotLabel->setText(QStringLiteral("中心坐标"));
+    }
+    if (m_centroidLabel) {
+        m_centroidLabel->setText(QStringLiteral("位置"));
+    }
+    if (m_pivot) {
+        m_pivot->setToolTip(
+            s.parentRelativeMode
+                ? QStringLiteral("枢轴相对父对象的坐标；修改将写入相对父对象的位置关键帧")
+                : QStringLiteral("枢轴在世界坐标中的位置（限制在轮廓包络内），用于重定位局部原点"));
+    }
+    if (m_centroid) {
+        m_centroid->setToolTip(
+            s.parentRelativeMode
+                ? QStringLiteral("几何质心相对父对象的坐标；修改将写入相对父对象的位置关键帧")
+                : QStringLiteral("实体几何质心的世界坐标；修改将整体平移实体"));
+    }
     if (m_pivot) m_pivot->setValue(s.pivot.x(), s.pivot.y());
     if (m_centroid) m_centroid->setValue(s.centroid.x(), s.centroid.y());
     if (m_userScale) {

client/gui/props/EntityPropertySection.h

@@ -32,6 +32,7 @@ struct EntityPropertyUiState {
     double userScale = 1.0;
     bool ignoreDistanceScale = false;
     bool visible = true;
+    bool parentRelativeMode = false;
     core::EntityIntroContent intro;
 };
 
@@ -66,6 +67,8 @@ private:
     QLineEdit* m_name = nullptr;
     QLabel* m_depth = nullptr;
     QLabel* m_distScale = nullptr;
+    QLabel* m_pivotLabel = nullptr;
+    QLabel* m_centroidLabel = nullptr;
     Vec2ParamControl* m_pivot = nullptr;
     Vec2ParamControl* m_centroid = nullptr;
     QDoubleSpinBox* m_userScale = nullptr;

client/gui/props/ToolPropertySection.cpp

@@ -1,10 +1,13 @@
 #include "props/ToolPropertySection.h"
 
+#include "params/ParamControls.h"
+
 #include <algorithm>
 
 #include <QComboBox>
 #include <QFormLayout>
 #include <QCheckBox>
+#include <QLabel>
 #include <QLineEdit>
 #include <QSlider>
 #include <QSpinBox>
@@ -26,6 +29,11 @@ ToolPropertySection::ToolPropertySection(QWidget* parent)
     m_text->setPlaceholderText(QStringLiteral("对话内容…"));
     form->addRow(QStringLiteral("文字"), m_text);
 
+    m_positionLabel = new QLabel(QStringLiteral("位置"), this);
+    m_position = new Vec2ParamControl(this);
+    m_position->setToolTip(QStringLiteral("工具在世界坐标中的位置"));
+    form->addRow(m_positionLabel, m_position);
+
     m_pointerT = new QSlider(Qt::Horizontal, this);
     m_pointerT->setRange(0, 1000);
     m_pointerT->setSingleStep(10);
@@ -46,7 +54,7 @@ ToolPropertySection::ToolPropertySection(QWidget* parent)
 
     m_visible = new QCheckBox(QString(), this);
     m_visible->setChecked(true);
-    m_visible->setToolTip(QStringLiteral("随帧变化：在当前帧切换会写入可见性关键帧（10帧淡入淡出）"));
+    m_visible->setToolTip(QStringLiteral("随帧变化：在当前帧切换会写入可见性关键帧"));
     form->addRow(QStringLiteral("可见性"), m_visible);
 
     lay->addLayout(form);
@@ -58,11 +66,13 @@ ToolPropertySection::ToolPropertySection(QWidget* parent)
     connect(m_pointerT, &QSlider::valueChanged, this, &ToolPropertySection::pointerTChanged);
     connect(m_fontPx, qOverload<int>(&QSpinBox::valueChanged), this, &ToolPropertySection::fontPxChanged);
     connect(m_align, qOverload<int>(&QComboBox::currentIndexChanged), this, &ToolPropertySection::alignChanged);
+    connect(m_position, &Vec2ParamControl::valueChanged, this, &ToolPropertySection::positionEdited);
     connect(m_visible, &QCheckBox::toggled, this, &ToolPropertySection::visibleToggled);
 }
 
 void ToolPropertySection::setEditingEnabled(bool on) {
-    for (auto* w : {static_cast<QWidget*>(m_text), static_cast<QWidget*>(m_pointerT),
+    for (auto* w : {static_cast<QWidget*>(m_text), static_cast<QWidget*>(m_position),
+                    static_cast<QWidget*>(m_pointerT),
                     static_cast<QWidget*>(m_fontPx), static_cast<QWidget*>(m_align),
                     static_cast<QWidget*>(m_visible)}) {
         if (w) w->setEnabled(on);
@@ -76,6 +86,13 @@ void ToolPropertySection::clearDisconnected() {
         m_text->clear();
         m_text->blockSignals(false);
     }
+    if (m_positionLabel) m_positionLabel->setText(QStringLiteral("位置"));
+    if (m_position) {
+        m_position->blockSignals(true);
+        m_position->setToolTip(QStringLiteral("工具在世界坐标中的位置"));
+        m_position->setValue(0.0, 0.0);
+        m_position->blockSignals(false);
+    }
     if (m_pointerT) {
         m_pointerT->blockSignals(true);
         m_pointerT->setValue(500);
@@ -105,6 +122,18 @@ void ToolPropertySection::applyState(const ToolPropertyUiState& s) {
         m_text->setText(s.text);
         m_text->blockSignals(false);
     }
+    if (m_positionLabel) {
+        m_positionLabel->setText(QStringLiteral("位置"));
+    }
+    if (m_position) {
+        m_position->blockSignals(true);
+        m_position->setToolTip(
+            s.parentRelativeMode
+                ? QStringLiteral("工具相对父对象的位置；修改将写入相对父对象的位置关键帧")
+                : QStringLiteral("工具在世界坐标中的位置"));
+        m_position->setValue(s.position.x(), s.position.y());
+        m_position->blockSignals(false);
+    }
     if (m_pointerT) {
         m_pointerT->blockSignals(true);
         m_pointerT->setValue(std::clamp(s.pointerTThousandths, 0, 1000));

client/gui/props/ToolPropertySection.h

@@ -2,6 +2,7 @@
 
 #include "props/PropertySectionWidget.h"
 
+#include <QPointF>
 #include <QString>
 
 class QComboBox;
@@ -9,12 +10,19 @@ class QLineEdit;
 class QSlider;
 class QSpinBox;
 class QCheckBox;
+class QLabel;
+
+namespace gui {
+class Vec2ParamControl;
+}
 
 namespace gui {
 
 struct ToolPropertyUiState {
     QString displayName;
     QString text;
+    QPointF position;
+    bool parentRelativeMode = false;
     int pointerTThousandths = 500; // bubblePointerT01 * 1000，0=左 1000=右
     int fontPx = 18;
     int alignIndex = 1; // 0=left,1=center,2=right
@@ -35,10 +43,13 @@ signals:
     void pointerTChanged(int thousandths);
     void fontPxChanged(int px);
     void alignChanged(int alignIndex);
+    void positionEdited(double x, double y);
     // 可见性（动画通道）：在当前帧写关键帧
     void visibleToggled(bool on);
 
 private:
+    QLabel* m_positionLabel = nullptr;
+    Vec2ParamControl* m_position = nullptr;
     QLineEdit* m_text = nullptr;
     QSlider* m_pointerT = nullptr;
     QSpinBox* m_fontPx = nullptr;