diff --git a/ArchitectureColoredPainting/RendererWidget.ui b/ArchitectureColoredPainting/RendererWidget.ui
index e116c32..e0d5a12 100644
--- a/ArchitectureColoredPainting/RendererWidget.ui
+++ b/ArchitectureColoredPainting/RendererWidget.ui
@@ -84,10 +84,26 @@
     </layout>
    </item>
    <item>
-    <layout class="QHBoxLayout" name="horizontalLayout" stretch="1,0">
+    <layout class="QHBoxLayout" name="horizontalLayout" stretch="0,1,0">
      <property name="sizeConstraint">
       <enum>QLayout::SetDefaultConstraint</enum>
      </property>
+     <item>
+      <widget class="QListWidget" name="textureListWidget">
+       <property name="sizePolicy">
+        <sizepolicy hsizetype="Fixed" vsizetype="Expanding">
+         <horstretch>0</horstretch>
+         <verstretch>0</verstretch>
+        </sizepolicy>
+       </property>
+       <property name="maximumSize">
+        <size>
+         <width>0</width>
+         <height>16777215</height>
+        </size>
+       </property>
+      </widget>
+     </item>
      <item>
       <widget class="Renderer::RendererGLWidget" name="openGLWidget">
        <property name="sizePolicy">
diff --git a/ArchitectureColoredPainting/res/Shaders/painting.comp b/ArchitectureColoredPainting/res/Shaders/painting.comp
index 7324942..6e166cf 100644
--- a/ArchitectureColoredPainting/res/Shaders/painting.comp
+++ b/ArchitectureColoredPainting/res/Shaders/painting.comp
@@ -20,22 +20,25 @@ layout(std430, binding = 1) buffer bvhBoundBuffer
 {
     vec4 bvhBound[];
 };
-layout(std430, binding = 2) buffer elementOffsetBuffer
+layout(std430, binding = 2) buffer elementTranformBuffer
+{
+    mat3x2 elementTranform[];
+};
+layout(std430, binding = 3) buffer elementOffsetBuffer
 {
     /**
      * @[0] elementBvhRoot
      * @[1] styleOffset
      * @[2] pointsOffset
      * @[3] linesOffset
-
      */
-    uint elementOffset[][5];
+    uint elementOffset[][4];
 };
-layout(std430, binding = 3) buffer elementIndexBuffer
+layout(std430, binding = 4) buffer elementIndexBuffer
 {
     uint elementIndexs[]; // 线和面
 };
-layout(std430, binding = 4) buffer elementDataBuffer
+layout(std430, binding = 5) buffer elementDataBuffer
 {
     float elementData[]; // 点和Style
 };
@@ -1115,15 +1118,11 @@ bool fillElement(vec2 localUV, uint contourIndex, uint linesOffset, uint pointsO
 }
 
 bool strokeElement(vec2 localUV, uint contourIndex, uint linesOffset, uint pointsOffset, uint styleIndex,
-                   float widthHeightRatio, inout vec4 elementColor, inout vec2 metallicRoughness)
+                   inout vec4 elementColor, inout vec2 metallicRoughness)
 {
     bool hitElement = false;
     float strokeWidth = elementData[styleIndex];
 
-    vec2 size = normalize(vec2(widthHeightRatio, 1)) + vec2(2 * strokeWidth);
-    vec2 ratio = widthHeightRatio < 1 ? vec2(widthHeightRatio, 1) : vec2(1, 1 / widthHeightRatio);
-    localUV *= ratio;
-
     float minDistance = 1e38;
     uint lineCount = elementIndexs[contourIndex];
     vec4 styleHead = unpackUnorm4x8(floatBitsToUint(elementData[styleIndex + 1]));
@@ -1149,17 +1148,13 @@ bool strokeElement(vec2 localUV, uint contourIndex, uint linesOffset, uint point
         mat4x2 p =
             mat4x2(elementData[pxIndex[0]], elementData[pyIndex[0]], elementData[pxIndex[1]], elementData[pyIndex[1]],
                    elementData[pxIndex[2]], elementData[pyIndex[2]], elementData[pxIndex[3]], elementData[pyIndex[3]]);
-        p[0] *= ratio;
-        p[1] *= ratio;
-        p[2] *= ratio;
-        p[3] *= ratio;
 
         vec2 tangentBeginNext = vec2(0);
         if (contourIterator + 1 < contourIndex + 1 + lineCount)
         {
             uint lineIndex = elementIndexs[contourIterator + 1];
             uint pLocation = linesOffset + 3 * lineIndex;
-            //vec2 percent = unpackUnorm2x16(elementIndexs[pLocation + 2]);
+            // vec2 percent = unpackUnorm2x16(elementIndexs[pLocation + 2]);
             uvec4 pxIndex = uvec4(pointsOffset) +
                             2 * uvec4(elementIndexs[pLocation] >> 16, elementIndexs[pLocation] & 0xFFFF,
                                       elementIndexs[pLocation + 1] >> 16, elementIndexs[pLocation + 1] & 0xFFFF);
@@ -1168,10 +1163,6 @@ bool strokeElement(vec2 localUV, uint contourIndex, uint linesOffset, uint point
             mat4x2 pNext = mat4x2(elementData[pxIndex[0]], elementData[pyIndex[0]], elementData[pxIndex[1]],
                                   elementData[pyIndex[1]], elementData[pxIndex[2]], elementData[pyIndex[2]],
                                   elementData[pxIndex[3]], elementData[pyIndex[3]]);
-            pNext[0] *= ratio;
-            pNext[1] *= ratio;
-            pNext[2] *= ratio;
-            pNext[3] *= ratio;
 
             if (pNext[0] == pNext[1] && pNext[2] == pNext[3])
             {
@@ -1179,8 +1170,8 @@ bool strokeElement(vec2 localUV, uint contourIndex, uint linesOffset, uint point
                 pNext[2] = pNext[1];
             }
 
-            //if(pNext[0]!=p[3])
-            //    break;
+            // if(pNext[0]!=p[3])
+            //     break;
             if (pNext[0] != pNext[1])
                 tangentBeginNext = normalize(pNext[0] - pNext[1]);
             else
@@ -1221,11 +1212,11 @@ bool strokeElement(vec2 localUV, uint contourIndex, uint linesOffset, uint point
 
             bool hit = d < minDistance;
             if (onBegin)
-                hit =
-                    hit && shouldFillBeginCap(localUV, contourIterator == contourIndex + 1, endType, p[0], tangentBegin, p3Last - p2Last);
+                hit = hit && shouldFillBeginCap(localUV, contourIterator == contourIndex + 1, endType, p[0],
+                                                tangentBegin, p3Last - p2Last);
             if (onEnd)
-                hit = hit &&
-                      shouldFillEndCap(localUV, tangentBeginNext==vec2(0), endType, p[3], tangentEnd, tangentBeginNext);
+                hit = hit && shouldFillEndCap(localUV, tangentBeginNext == vec2(0), endType, p[3], tangentEnd,
+                                              tangentBeginNext);
             if (hit)
             {
 
@@ -1272,7 +1263,7 @@ bool strokeElement(vec2 localUV, uint contourIndex, uint linesOffset, uint point
     return hitElement;
 }
 
-bool drawElement(uint elementIndex, vec2 localUV, vec2 scale, out vec3 color, out vec2 metallicRoughness,
+bool drawElement(uint elementIndex, vec2 localUV, out vec3 color, out vec2 metallicRoughness,
                  inout vec3 debugBVH = vec3(0))
 {
     bool hitElement = false;
@@ -1284,7 +1275,7 @@ bool drawElement(uint elementIndex, vec2 localUV, vec2 scale, out vec3 color, ou
     uint styleIndex = currentOffset[1];
     uint pointsOffset = currentOffset[2];
     uint linesOffset = currentOffset[3];
-    float widthHeightRatio = uintBitsToFloat(currentOffset[4]);
+    // float widthHeightRatio = uintBitsToFloat(currentOffset[4]);
 
     elementStack.top = 0;
     uint elementBvhIndex = 0;
@@ -1317,7 +1308,7 @@ bool drawElement(uint elementIndex, vec2 localUV, vec2 scale, out vec3 color, ou
                     else // 线
                     {
                         hitElement = strokeElement(localUV, contourIndex, linesOffset, pointsOffset, styleIndex,
-                                                   widthHeightRatio, elementColor, metallicRoughness);
+                                                   elementColor, metallicRoughness);
                     }
 
                     elementBvhIndex = elementBvhLength;
@@ -1357,7 +1348,7 @@ void main()
 
     vec3 debugBVH = vec3(0);
     // bool debugHit = false;
-    //vec4 color = vec4(0.76, 0.33, 0.15, -1);
+    // vec4 color = vec4(0.76, 0.33, 0.15, -1);
     vec4 color = vec4(backgroundColor, -1);
     vec2 metallicRoughness = vec2(0, 0.8);
     stack.top = 0;
@@ -1371,49 +1362,39 @@ void main()
             visitTime++;
             vec4 bound = bvhBound[index];
             uint leftChild = bvhChildren[index].x;
-            if (leftChild >= bvhLength)
-            {
-                uint zIndex = bvhChildren[index].y >> 18;
-                bvec2 flip = bvec2(bvhChildren[index].y & (1 << 16), bvhChildren[index].y & (1 << 17));
-                float angle = (float(bvhChildren[index].y & ((1 << 16) - 1)) / 65535.0) * 2 * PI;
-                mat2 rotation = {{cos(angle), -sin(angle)}, {sin(angle), cos(angle)}};
-                vec2 localUV = uv - (bound.xy + bound.zw) / 2;
-                localUV = rotation * localUV;
-                vec2 scale = (bound.zw - bound.xy) / 2;
-                localUV /= scale;
-                if (all(lessThan(vec2(-1), localUV)) && all(lessThan(localUV, vec2(1))) && zIndex > color.w)
-                {
-                    // if (any(greaterThan(bound.xy+vec2(0.005), uv)) || any(greaterThan(uv, bound.zw-vec2(0.005))))
-                    if (any(greaterThan(vec2(-1) + vec2(0.005), localUV)) ||
-                        any(greaterThan(localUV, vec2(1) - vec2(0.005))))
-                        debugBVH.g += 0.3;
-                    // uint elementIndex = leftChild - bvhLength;
-                    // debugBVH.bg += 0.5 * (localUV + vec2(1));
 
-                    // debugBVH = vec3(0);
-                    if (flip.x)
-                        localUV.x = -localUV.x;
-                    if (flip.y)
-                        localUV.y = -localUV.y;
+            if (all(lessThan(bound.xy, uv)) && all(lessThan(uv, bound.zw)))
+            {
+                if (any(greaterThan(bound.xy + vec2(0.005), uv)) || any(greaterThan(uv, bound.zw - vec2(0.005))))
+                    debugBVH.g += 0.3;
+
+                if (leftChild >= bvhLength)
+                {
+                    uint transformIndex = leftChild - 0x80000000;
+                    uint zIndex = bvhChildren[index].y >> 18;
+                    uint elementIndex = bvhChildren[index].y - zIndex;
+                    mat3x2 transform = elementTranform[transformIndex];
+                    vec2 localUV =
+                        (mat3(vec3(transform[0], 0), vec3(transform[1], 0), vec3(transform[2], 1)) * vec3(uv, 1)).xy;
+
                     vec3 elementColor;
                     vec2 elementMetallicRoughness;
-                    if (drawElement(leftChild - 0x80000000, localUV, scale, elementColor, elementMetallicRoughness,
+                    if (drawElement(elementIndex, localUV, elementColor, elementMetallicRoughness,
                                     debugBVH))
                     {
                         color = vec4(elementColor, zIndex);
                         metallicRoughness = elementMetallicRoughness;
                     }
-                }
+                    //if(elementIndex == 1 && transformIndex==1)
+                    //    color = vec4(1,1,0,1);
 
-                index = bvhLength;
-            }
-            else if (all(lessThan(bound.xy, uv)) && all(lessThan(uv, bound.zw)))
-            {
-                if (any(greaterThan(bound.xy + vec2(0.005), uv)) || any(greaterThan(uv, bound.zw - vec2(0.005))))
-                    debugBVH.g += 0.3;
-                // debugBVH.r += 0.02;
-                stack.push(index);
-                index = leftChild;
+                    index = bvhLength;
+                }
+                else
+                {
+                    stack.push(index);
+                    index = leftChild;
+                }
             }
             else
                 index = bvhLength;
@@ -1428,7 +1409,7 @@ void main()
 
     imageStore(gBaseColor, pixelLocation, vec4(color.rgb, 1));
     imageStore(gMetallicRoughness, pixelLocation, vec4(metallicRoughness, 0, 1));
-    return;
+    //return;
     if (/*color.a!=-1&&*/ debugBVH == vec3(0))
     {
         // imageStore(gBaseColor, pixelLocation, vec4(vec3(1, 1, 0),1));
diff --git a/ArchitectureColoredPainting/src/Editor/EditorWidgetComponent/LayerCreateWidget.cpp b/ArchitectureColoredPainting/src/Editor/EditorWidgetComponent/LayerCreateWidget.cpp
index ed6743a..45d8dfe 100644
--- a/ArchitectureColoredPainting/src/Editor/EditorWidgetComponent/LayerCreateWidget.cpp
+++ b/ArchitectureColoredPainting/src/Editor/EditorWidgetComponent/LayerCreateWidget.cpp
@@ -1,15 +1,46 @@
 #include "LayerCreateWidget.h"
 #include <QComboBox>
 
-LayerCreateWidget::LayerCreateWidget(ElementManager* elementManager, QWidget* parent) :
+LayerCreateWidget::LayerCreateWidget(ElementManager* elementManager, FolderLayerWrapper* folderLayer, QWidget* parent) :
 	QDialog(parent)
 {
+	this->elementManager = elementManager;
 	ui.setupUi(this);
 	connect(ui.buttonBox, SIGNAL(accepted()), this, SLOT(accept()));
 	connect(ui.buttonBox, SIGNAL(rejected()), this, SLOT(reject()));
 	connect(ui.comboBox, SIGNAL(currentIndexChanged(int)), this, SLOT(onCurrentIndexChanged(int)));
 	elementPool = new ElementPoolWidget(ui.elementPool);
-	elementPool->setElementList(elementManager->elements);
+	elements = elementManager->elements;
+	elementsCheck(folderLayer);
+	elementPool->setElementList(elements);
+}
+
+void LayerCreateWidget::elementsCheck(FolderLayerWrapper* parent)
+{
+	std::set<LayerWrapper*> upSet, downSet;
+	parent->collectUpReachable(upSet);
+	for (auto it = elements.begin(); it != elements.end();)
+	{
+		bool valid = true;
+		auto ele = dynamic_cast<GroupElement*>(*it);
+		if (ele != nullptr)
+		{
+			downSet.clear();
+			ele->collectReachable(downSet);
+			for (auto& layer : downSet)
+			{
+				if (upSet.find(layer) != upSet.end())
+				{
+					valid = false;
+					break;
+				}
+			}
+		}
+		if (valid)
+			++it;
+		else
+			it = elements.erase(it);
+	}
 }
 
 LayerCreateWidget::~LayerCreateWidget()
@@ -21,8 +52,20 @@ void LayerCreateWidget::accept()
 	QJsonObject jsonObj;
 	jsonObj.insert("name", ui.name->text());
 	if (ui.comboBox->currentIndex() == 0) {
+		auto currentEle = elements[elementPool->currentIndex];
+		int index = -1;
+		for (int i = 0; i < elementManager->elements.size(); i++)
+		{
+			if (elementManager->elements[i] == currentEle)
+			{
+				index = i;
+				break;
+			}
+		}
+		if (index == -1)
+			return;
 		jsonObj.insert("is-folder", false);
-		jsonObj.insert("element", elementPool->currentIndex);
+		jsonObj.insert("element", index);
 	}
 	else {
 		jsonObj.insert("is-folder", true);
diff --git a/ArchitectureColoredPainting/src/Editor/EditorWidgetComponent/LayerCreateWidget.h b/ArchitectureColoredPainting/src/Editor/EditorWidgetComponent/LayerCreateWidget.h
index c9b7c89..38456b2 100644
--- a/ArchitectureColoredPainting/src/Editor/EditorWidgetComponent/LayerCreateWidget.h
+++ b/ArchitectureColoredPainting/src/Editor/EditorWidgetComponent/LayerCreateWidget.h
@@ -11,12 +11,15 @@ class LayerCreateWidget :
     Q_OBJECT
 
 private:
+    ElementManager* elementManager;
+    std::vector<GraphicElement*> elements;
     Ui::LayerCreateWidget ui;
     ElementPoolWidget* elementPool;
+    void elementsCheck(FolderLayerWrapper*);
 
     
 public:
-    LayerCreateWidget(ElementManager* elementManager,QWidget* parent = nullptr);
+    LayerCreateWidget(ElementManager* elementManager, FolderLayerWrapper* folderLayer, QWidget* parent = nullptr);
     ~LayerCreateWidget();
     void accept() override;
     
diff --git a/ArchitectureColoredPainting/src/Editor/GraphicElement.cpp b/ArchitectureColoredPainting/src/Editor/GraphicElement.cpp
index 8896f9e..5c0acb0 100644
--- a/ArchitectureColoredPainting/src/Editor/GraphicElement.cpp
+++ b/ArchitectureColoredPainting/src/Editor/GraphicElement.cpp
@@ -148,4 +148,12 @@ QPixmap GroupElement::getPreview(QSize size)
 	rect.setBottomRight(rect.bottomRight() + QPoint(5, 5));
 	result = result.copy(rect);
 	return result.scaled(size, Qt::KeepAspectRatio, Qt::SmoothTransformation);
+}
+
+void GroupElement::collectReachable(std::set<LayerWrapper*>& set) const
+{
+	if (sourceLayer != nullptr)
+	{
+		sourceLayer->collectDownReachable(set);
+	}
 }
\ No newline at end of file
diff --git a/ArchitectureColoredPainting/src/Editor/GraphicElement.h b/ArchitectureColoredPainting/src/Editor/GraphicElement.h
index 12e2cfa..d0500b2 100644
--- a/ArchitectureColoredPainting/src/Editor/GraphicElement.h
+++ b/ArchitectureColoredPainting/src/Editor/GraphicElement.h
@@ -66,6 +66,7 @@ public:
     void setSourceLayer(FolderLayerWrapper* sourceLayer);
     void paint(QPainter* painter, QTransform transform, const LayerStyleContainer& styles) override;
     QPixmap getPreview(QSize size) override;
+	void collectReachable(std::set<LayerWrapper*>& set) const;
 };
 
 //********************************  BitmapPath  ********************************//
diff --git a/ArchitectureColoredPainting/src/Editor/LayerWrapper.cpp b/ArchitectureColoredPainting/src/Editor/LayerWrapper.cpp
index 9281248..e30b068 100644
--- a/ArchitectureColoredPainting/src/Editor/LayerWrapper.cpp
+++ b/ArchitectureColoredPainting/src/Editor/LayerWrapper.cpp
@@ -285,4 +285,36 @@ void LeafLayerWrapper::paint(QPainter* painter, QTransform transform, bool ignor
 	{
 		wrappedElement->paint(painter, transform, styles);
 	}
+}
+
+void LayerWrapper::collectUpReachable(std::set<LayerWrapper*>& reachable)
+{
+    auto cPos = this;
+    while (cPos != nullptr)
+    {
+		reachable.insert(cPos);
+		cPos = cPos->parent;
+    }
+}
+
+void LayerWrapper::collectDownReachable(std::set<LayerWrapper*>& reachable)
+{
+	reachable.insert(this);
+}
+
+void LeafLayerWrapper::collectDownReachable(std::set<LayerWrapper*>& reachable)
+{
+	LayerWrapper::collectDownReachable(reachable);
+    auto ele = dynamic_cast<GroupElement*>(wrappedElement);
+    if (ele != nullptr)
+    {
+		ele->collectReachable(reachable);
+    }
+}
+
+void FolderLayerWrapper::collectDownReachable(std::set<LayerWrapper*>& reachable)
+{
+	LayerWrapper::collectDownReachable(reachable);
+	for (auto& child : children)
+		child->collectDownReachable(reachable);
 }
\ No newline at end of file
diff --git a/ArchitectureColoredPainting/src/Editor/LayerWrapper.h b/ArchitectureColoredPainting/src/Editor/LayerWrapper.h
index dd87c4f..92d82d1 100644
--- a/ArchitectureColoredPainting/src/Editor/LayerWrapper.h
+++ b/ArchitectureColoredPainting/src/Editor/LayerWrapper.h
@@ -68,7 +68,8 @@ class LayerWrapper
     virtual void delSelf();
 	virtual QJsonObject toJson() const;
     ~LayerWrapper() = default;
-    
+	virtual void collectUpReachable(std::set<LayerWrapper*>& reachable);
+	virtual void collectDownReachable(std::set<LayerWrapper*>& reachable);
 };
 
 class FolderLayerWrapper : public LayerWrapper
@@ -92,6 +93,7 @@ class FolderLayerWrapper : public LayerWrapper
 	QJsonObject toJson() const override;
     int getReferencedBy()const;
 	void paint(QPainter* painter, QTransform transform = QTransform(), bool ignoreSelected = false) override;
+    void collectDownReachable(std::set<LayerWrapper*>& reachable) override;
 };
 
 class LeafLayerWrapper : public LayerWrapper
@@ -107,6 +109,7 @@ class LeafLayerWrapper : public LayerWrapper
     LeafLayerWrapper(QJsonObject json, ElementManager *elementManager, FolderLayerWrapper*parent);
     QJsonObject toJson() const override;
 	void paint(QPainter* painter, QTransform transform = QTransform(), bool ignoreSelected = false) override;
+    void collectDownReachable(std::set<LayerWrapper*>& reachable) override;
 };
 
 Q_DECLARE_METATYPE(LayerWrapper *)
diff --git a/ArchitectureColoredPainting/src/Editor/RightBar/InfoDisplayWidget.cpp b/ArchitectureColoredPainting/src/Editor/RightBar/InfoDisplayWidget.cpp
index 6e84bd7..ca1e2ca 100644
--- a/ArchitectureColoredPainting/src/Editor/RightBar/InfoDisplayWidget.cpp
+++ b/ArchitectureColoredPainting/src/Editor/RightBar/InfoDisplayWidget.cpp
@@ -60,13 +60,13 @@ void InfoDisplayWidget::generateLayerForm()
             emit requireRefreshElementWidget();
             emit requireRefreshPreview();
         });
-        scaleX->setValidator(new QDoubleValidator(0.001, 1000, 4, this));
+        scaleX->setValidator(new QDoubleValidator(-1000, 1000, 4, this));
         connect(scaleX, &QLineEdit::textChanged, [=](QString content) {
             this->displayLayer->property.scale = {content.toDouble(), this->displayLayer->property.scale.y()};
             emit requireRefreshElementWidget();
             emit requireRefreshPreview();
         });
-        scaleY->setValidator(new QDoubleValidator(0.001, 1000, 4, this));
+        scaleY->setValidator(new QDoubleValidator(-1000, 1000, 4, this));
         connect(scaleY, &QLineEdit::textChanged, [=](QString content) {
             this->displayLayer->property.scale = {this->displayLayer->property.scale.x(), content.toDouble()};
             emit requireRefreshElementWidget();
diff --git a/ArchitectureColoredPainting/src/Editor/RightBar/LayerTreeWidget.cpp b/ArchitectureColoredPainting/src/Editor/RightBar/LayerTreeWidget.cpp
index a27da25..8b85c1a 100644
--- a/ArchitectureColoredPainting/src/Editor/RightBar/LayerTreeWidget.cpp
+++ b/ArchitectureColoredPainting/src/Editor/RightBar/LayerTreeWidget.cpp
@@ -50,7 +50,7 @@ void LayerTreeWidget::popMenu(const QPoint &pos)
         if (layer != nullptr) {
             if (typeid(*layer) == typeid(FolderLayerWrapper)) {
                 menu.addAction(QString::fromLocal8Bit("创建子节点"), this, [this, layer]() {
-					auto dialog = new LayerCreateWidget(elementManager, this);  
+					auto dialog = new LayerCreateWidget(elementManager, dynamic_cast<FolderLayerWrapper*>(layer), this);
                     connect(dialog, &LayerCreateWidget::LayerInfoReturned, this, [this, layer](QJsonObject jsonObj) {
                         auto folderLayer = dynamic_cast<FolderLayerWrapper*>(layer);
                         LayerWrapper* newLayer;
@@ -76,15 +76,18 @@ void LayerTreeWidget::popMenu(const QPoint &pos)
                     layer->getParent()->removeChild(layer);
                     this->refresh();
                     emit requireRefreshPreview();
+                    emit requireRefreshElementWidget();
                     });
                 menu.addAction(QString::fromLocal8Bit("重命名"), this, &LayerTreeWidget::onRenameEvent);
-                menu.addAction(QString::fromLocal8Bit("删除（保留子节点）"), this, [this]() {
-                    auto layer = this->selectedItem->data(0, Qt::UserRole).value<LayerWrapper*>();
-                    layer->delSelf();
-                    layer->getParent()->removeChild(layer);
-                    this->refresh();
-                    emit requireRefreshPreview();
-                    });
+                if(typeid(*layer) == typeid(FolderLayerWrapper))
+                    menu.addAction(QString::fromLocal8Bit("删除（保留子节点）"), this, [this]() {
+                        auto layer = this->selectedItem->data(0, Qt::UserRole).value<LayerWrapper*>();
+                        layer->delSelf();
+                        layer->getParent()->removeChild(layer);
+                        this->refresh();               
+                        emit requireRefreshPreview();
+                        emit requireRefreshElementWidget();
+                        });
             }
             if (typeid(*layer) == typeid(FolderLayerWrapper) && ((FolderLayerWrapper*)layer)->getReferencedBy() == -1) {
                 menu.addAction(QString::fromLocal8Bit("创建组合元素"), this, [this]() {
diff --git a/ArchitectureColoredPainting/src/Editor/util/PaintingUtil.cpp b/ArchitectureColoredPainting/src/Editor/util/PaintingUtil.cpp
index 8c4ec74..aea42d4 100644
--- a/ArchitectureColoredPainting/src/Editor/util/PaintingUtil.cpp
+++ b/ArchitectureColoredPainting/src/Editor/util/PaintingUtil.cpp
@@ -99,7 +99,10 @@ FolderLayerWrapper* PaintingUtil::handleLayerWrapper(LayerWrapper* nowLayer, QTr
         qDebug() << painterPath;
         bound = painterPath.boundingRect();
         qDebug() << bound;
-        elementTrans.center = glm::vec2(
+
+        // TODO 改用矩阵
+
+      /*  elementTrans.center = glm::vec2(
             (2 * bound.center().x() - screenSize.width()) / screenSize.width(),
             (2 * bound.center().y() - screenSize.height()) / screenSize.height()
         );
@@ -114,7 +117,7 @@ FolderLayerWrapper* PaintingUtil::handleLayerWrapper(LayerWrapper* nowLayer, QTr
             nowLayer->property.flipVertically
         );
         qDebug() << elementTrans.scale.x << elementTrans.scale.y;
-        painting.addElement(element, elementTrans);
+        painting.addElement(element, elementTrans);*/
         return nullptr;
     }
     
diff --git a/ArchitectureColoredPainting/src/Renderer/Mesh.h b/ArchitectureColoredPainting/src/Renderer/Mesh.h
index ec452fd..35348bc 100644
--- a/ArchitectureColoredPainting/src/Renderer/Mesh.h
+++ b/ArchitectureColoredPainting/src/Renderer/Mesh.h
@@ -18,7 +18,7 @@ namespace Renderer
 		glm::vec3 Position;
 		glm::vec3 Normal;
 		glm::vec2 TexCoords;
-		Vertex(const aiVector3D& position, const aiVector3D& Normal, const aiVector3D& TexCoords);
+		Vertex(const aiVector3D& position, const aiVector3D& normal, const aiVector3D& texCoords);
 	};
 
 	struct Texture
diff --git a/ArchitectureColoredPainting/src/Renderer/Model.cpp b/ArchitectureColoredPainting/src/Renderer/Model.cpp
index e96d36a..3510ed7 100644
--- a/ArchitectureColoredPainting/src/Renderer/Model.cpp
+++ b/ArchitectureColoredPainting/src/Renderer/Model.cpp
@@ -16,6 +16,7 @@
 #include <ThirdPartyLib/qquick/qquicksvgparser_p.h>
 #include <util/PaintingUtil.h>
 #include "Painting/MaterialStyleStroke.h"
+#include <glm/gtc/matrix_transform.hpp>
 
 using namespace Renderer;
 using std::vector;
@@ -32,14 +33,12 @@ Model::Model(QOpenGLContext* context, QOpenGLShaderProgram* shaderProgram,
 }
 
 void Model::draw() {
-	//shaderProgram->bind();
 	for (auto& mesh : meshes) {
 		mesh->draw();
 	}
 }
 
 void Model::drawShadow() {
-	//shaderProgram->bind();
 	for (auto& mesh : meshes) {
 		mesh->drawShadow();
 	}
@@ -55,7 +54,7 @@ void Renderer::Model::loadModel(QString path)
 	const aiScene* scene = importer.ReadFile(modelFile.absoluteFilePath().toUtf8(), aiProcess_Triangulate);
 	if (!scene || scene->mFlags & AI_SCENE_FLAGS_INCOMPLETE || !scene->mRootNode)
 	{
-		qCritical() << "ERROR::ASSIMP::" << importer.GetErrorString() << endl;
+		qCritical() << "ERROR::ASSIMP::" << importer.GetErrorString();
 		return;
 	}
 	qDebug() << modelFile.absoluteFilePath() << "Loaded Successfully";
@@ -63,9 +62,11 @@ void Renderer::Model::loadModel(QString path)
 	qDebug() << "NumMaterials: " << scene->mNumMaterials;
 	qDebug() << "NumTextures: " << scene->mNumTextures;
 
+	unloadModel();
+
+
 	if (QFile paintingConfigFile(directory.filePath(name + ".txt")); paintingConfigFile.open(QFile::ReadOnly | QIODevice::Text))
 	{
-		paintingMap.clear();
 		QTextStream stream(&paintingConfigFile);
 		while (!stream.atEnd())
 		{
@@ -82,23 +83,36 @@ void Renderer::Model::loadModel(QString path)
 		qWarning() << "Painting Config Not Found!";
 	}
 
+
+	aiMatrix4x4 transform;
+	aiMatrix4x4::Scaling(aiVector3D(1 / 0.008), transform);
+	processNode(scene->mRootNode, scene, transform * scene->mRootNode->mTransformation);
+	AABB.clear();
+	AABB.emplace_back(minX, minY, minZ);
+	AABB.emplace_back(minX, minY, maxZ);
+	AABB.emplace_back(minX, maxY, minZ);
+	AABB.emplace_back(minX, maxY, maxZ);
+	AABB.emplace_back(maxX, minY, minZ);
+	AABB.emplace_back(maxX, minY, maxZ);
+	AABB.emplace_back(maxX, maxY, minZ);
+	AABB.emplace_back(maxX, maxY, maxZ);
+}
+
+void Renderer::Model::unloadModel()
+{
+	paintingMap.clear();
+	for (auto& i : paintingLoaded)
+		vtManager->deleteVirtualTexture(i.second);
+	paintingLoaded.clear();
+	texturesLoaded.clear();
+	meshes.clear();
+
 	minX = std::numeric_limits<float>::max();
 	maxX = std::numeric_limits<float>::min();
 	minY = std::numeric_limits<float>::max();
 	maxY = std::numeric_limits<float>::min();
 	minZ = std::numeric_limits<float>::max();
 	maxZ = std::numeric_limits<float>::min();
-	aiMatrix4x4 transform;
-	aiMatrix4x4::Scaling(aiVector3D(1 / 0.008), transform);
-	processNode(scene->mRootNode, scene, transform * scene->mRootNode->mTransformation);
-	AABB.push_back(QVector3D(minX, minY, minZ));
-	AABB.push_back(QVector3D(minX, minY, maxZ));
-	AABB.push_back(QVector3D(minX, maxY, minZ));
-	AABB.push_back(QVector3D(minX, maxY, maxZ));
-	AABB.push_back(QVector3D(maxX, minY, minZ));
-	AABB.push_back(QVector3D(maxX, minY, maxZ));
-	AABB.push_back(QVector3D(maxX, maxY, minZ));
-	AABB.push_back(QVector3D(maxX, maxY, maxZ));
 }
 
 void Model::processNode(aiNode* node, const aiScene* scene, aiMatrix4x4 mat4)
@@ -267,13 +281,13 @@ GLuint Renderer::Model::loadPainting(std::string path)
 
 		if (path == "0.json")
 		{
-			painting.addElement(*element[0], ElementTransform{ glm::vec2(-0.45,-0.45), glm::vec2(0.5,0.5) / 2.f, 0, glm::bvec2(false), 0 });
-			painting.addElement(*element[1], ElementTransform{ glm::vec2(-0.45, 0.45), glm::vec2(0.5,0.5) / 2.f, 0, glm::bvec2(false), 0 });
-			painting.addElement(*element[2], ElementTransform{ glm::vec2(0.50,-0.45), glm::vec2(0.6,0.7) / 2.f, 0, glm::bvec2(false), 0 });
+			//painting.addElement(*element[0], ElementTransform{ glm::vec2(-0.45,-0.45), glm::vec2(0.5,0.5) / 2.f, 0, glm::bvec2(false), 0 });
+			//painting.addElement(*element[1], ElementTransform{ glm::vec2(-0.45, 0.45), glm::vec2(0.5,0.5) / 2.f, 0, glm::bvec2(false), 0 });
+			//painting.addElement(*element[2], ElementTransform{ glm::vec2(0.50,-0.45), glm::vec2(0.6,0.7) / 2.f, 0, glm::bvec2(false), 0 });
 		}
 		else if (path == "1.json")
 		{
-			painting.backgroundColor = QColor(196, 81, 35);
+			//painting.backgroundColor = QColor(196, 81, 35);
 			float widths[] = { 0.22, 0.22 * 0.25 / 0.15, 0.22 * 0.25 / 0.15 };
 			QPainterPath painterPaths[6];
 			for (int i = 0; i < 6; i++)
@@ -309,14 +323,39 @@ GLuint Renderer::Model::loadPainting(std::string path)
 				std::make_shared<StyleStrokeRadialGradient>(widths[1], StrokeType::kRightSide),
 				std::make_shared<StyleStrokeRadialGradient>(widths[2], StrokeType::kLeftSide),
 			};
-			vector<std::shared_ptr<Element>> element = {
-				std::make_shared<Element>(Element{ contours[0].first, style[0], contours[0].second}),
-				std::make_shared<Element>(Element{ contours[1].first, style[1], contours[1].second}),
-				std::make_shared<Element>(Element{ contours[2].first, style[2], contours[2].second}),
+			std::map<float, Material> materialMap = {
+				{0.09, Material{QColor(255,255,255),0,0.8}},
+				{0.63, Material{QColor(165,176,207),0,0.8}},
+				{1.00, Material{QColor(58,64,151),0,0.8}}
 			};
-			painting.addElement(*element[0], ElementTransform{ glm::vec2(-0.45,0.45), glm::vec2(0.25), 0, glm::bvec2(false), 0 });
-			painting.addElement(*element[1], ElementTransform{ glm::vec2(-0.535,0.33), glm::vec2(0.15), 0, glm::bvec2(false), 0 });
-			painting.addElement(*element[2], ElementTransform{ glm::vec2(-0.535,0.23), glm::vec2(0.15), 0, glm::bvec2(false), 0 });
+			vector<std::shared_ptr<BaseElement>> element = {
+				std::make_shared<BaseElement>(contours[0].first, std::make_shared<MaterialStyleStroke>(
+					widths[0], StrokeType::kLeftSide, StrokeEndType::kFlat, std::make_shared<StrokeRadialGradient>(materialMap, false))),
+				std::make_shared<BaseElement>(contours[1].first, std::make_shared<MaterialStyleStroke>(
+					widths[1], StrokeType::kRightSide, StrokeEndType::kFlat, std::make_shared<StrokeRadialGradient>(materialMap, false))),
+				std::make_shared<BaseElement>(contours[2].first, std::make_shared<MaterialStyleStroke>(
+					widths[2], StrokeType::kLeftSide, StrokeEndType::kFlat, std::make_shared<StrokeRadialGradient>(materialMap, false))),
+			};
+
+			QTransform trans = QTransform::fromScale(0.3, 0.3).inverted();
+			glm::mat3x2 mat(trans.m11(), trans.m12(), trans.m21(), trans.m22(), trans.m31(), trans.m32());
+
+			trans = QTransform::fromTranslate(0.5, 0).scale(0.3, 0.3).inverted();
+			glm::mat3x2 mat2(trans.m11(), trans.m12(), trans.m21(), trans.m22(), trans.m31(), trans.m32());
+			//mat = glm::mat3x2(11, 22, 33, 44, 55, 66);
+			//mat2 = glm::mat3x2(1, 2, 3, 4, 5, 6);
+
+			qDebug() << std::format("\n{} {} {}\n {} {} {}\n{} {} {}",
+				trans.m11(), trans.m21(), trans.m31(),
+				trans.m12(), trans.m22(), trans.m32(),
+				trans.m13(), trans.m23(), trans.m33()).c_str();
+
+			//painting.addElement(*element[0], ElementTransform{ glm::vec4(-1,-1,1,1), mat, 0});
+			painting.addElement(*element[1], ElementTransform{ glm::vec4(-1,-1,0,1), mat, 0 });
+			painting.addElement(*element[2], ElementTransform{ glm::vec4(0,-1,1,1), mat2, 0 });
+			//painting.addElement(*element[0], ElementTransform{ glm::vec2(-0.45,0.45), glm::vec2(0.25), 0, glm::bvec2(false), 0 });
+			//painting.addElement(*element[1], ElementTransform{ glm::vec2(-0.535,0.33), glm::vec2(0.15), 0, glm::bvec2(false), 0 });
+			//painting.addElement(*element[2], ElementTransform{ glm::vec2(-0.535,0.23), glm::vec2(0.15), 0, glm::bvec2(false), 0 });
 		}
 		else
 		{
@@ -324,7 +363,7 @@ GLuint Renderer::Model::loadPainting(std::string path)
 			{
 				float x = (float)rand() / RAND_MAX * 2 - 1;
 				float y = (float)rand() / RAND_MAX * 2 - 1;
-				painting.addElement(*element[i % 3], ElementTransform{ glm::vec2(x,y), glm::vec2(0.025), (float)rand() / RAND_MAX * 360, glm::bvec2(false), 0 });
+				//painting.addElement(*element[i % 3], ElementTransform{ glm::vec2(x,y), glm::vec2(0.025), (float)rand() / RAND_MAX * 360, glm::bvec2(false), 0 });
 			}
 		}
 	}
diff --git a/ArchitectureColoredPainting/src/Renderer/Model.h b/ArchitectureColoredPainting/src/Renderer/Model.h
index d9a6bea..d8112f9 100644
--- a/ArchitectureColoredPainting/src/Renderer/Model.h
+++ b/ArchitectureColoredPainting/src/Renderer/Model.h
@@ -15,6 +15,7 @@ namespace Renderer
 		void draw();
 		void drawShadow();
 		void loadModel(QString path);
+		void unloadModel();
 		Model(QOpenGLContext* context, QOpenGLShaderProgram* shaderProgram, QOpenGLShaderProgram* paintingProgram, QOpenGLShaderProgram* shadowProgram, VirtualTextureManager* vtManager);
 	private:
 		QOpenGLContext* context = nullptr;
@@ -25,8 +26,8 @@ namespace Renderer
 		VirtualTextureManager* vtManager = nullptr;
 
 		/**
-		 * @param key BaseColor路径
-		 * @param value json路径, 纹理坐标
+		 * @brief key BaseColor路径 \n
+		 *        value json路径, 纹理坐标
 		 */
 		std::unordered_map<std::string, std::tuple<std::string, glm::vec2, glm::vec2>> paintingMap; 
 		std::unordered_map<std::string, GLuint> paintingLoaded;
diff --git a/ArchitectureColoredPainting/src/Renderer/Painting/Element.cpp b/ArchitectureColoredPainting/src/Renderer/Painting/Element.cpp
index 4f2dab0..ce01a11 100644
--- a/ArchitectureColoredPainting/src/Renderer/Painting/Element.cpp
+++ b/ArchitectureColoredPainting/src/Renderer/Painting/Element.cpp
@@ -1,16 +1,16 @@
 #include "Element.h"
 
-void Renderer::ElementTransform::applyTransformStyle(const TransformStyle& t)
-{
-	center += t.translation;
-	scale *= t.scale;
-	rotation += t.rotation;
-	flip ^= t.flip;
-}
-
-Renderer::ElementTransform Renderer::ElementTransform::appliedTransformStyle(const TransformStyle& t) const
-{
-	ElementTransform result = *this;
-	result.applyTransformStyle(t);
-	return result;
-}
+//void Renderer::ElementTransform::applyTransformStyle(const TransformStyle& t)
+//{
+//	/*center += t.translation;
+//	scale *= t.scale;
+//	rotation += t.rotation;
+//	flip ^= t.flip;*/
+//}
+//
+//Renderer::ElementTransform Renderer::ElementTransform::appliedTransformStyle(const TransformStyle& t) const
+//{
+//	ElementTransform result = *this;
+//	result.applyTransformStyle(t);
+//	return result;
+//}
diff --git a/ArchitectureColoredPainting/src/Renderer/Painting/Element.h b/ArchitectureColoredPainting/src/Renderer/Painting/Element.h
index 2e5c892..c7655ed 100644
--- a/ArchitectureColoredPainting/src/Renderer/Painting/Element.h
+++ b/ArchitectureColoredPainting/src/Renderer/Painting/Element.h
@@ -5,7 +5,7 @@
 #include "Line.h"
 #include "ElementStyle.h"
 
-namespace Renderer 
+namespace Renderer
 {
 	using Contour = std::vector<std::vector<Point>>;
 
@@ -18,14 +18,15 @@ namespace Renderer
 
 	struct ElementTransform
 	{
-		glm::vec2 center;
-		//glm::vec2 size;
-		glm::vec2 scale;  /// 相对于画布
-		float rotation;   /// 角度制
-		glm::bvec2 flip;
+		//glm::vec2 center;
+		//glm::vec2 scale;  /// 相对于画布
+		//float rotation;   /// 角度制
+		//glm::bvec2 flip;
+		glm::vec4 bound; /// 包围盒，不影响变换
+		glm::mat3x2 transform; /// 逆变换
 		GLuint zIndex;
-		
-		void applyTransformStyle(const TransformStyle& t);
-		ElementTransform appliedTransformStyle(const TransformStyle& t) const;
+
+		//void applyTransformStyle(const TransformStyle& t);
+		//ElementTransform appliedTransformStyle(const TransformStyle& t) const;
 	};
 }
\ No newline at end of file
diff --git a/ArchitectureColoredPainting/src/Renderer/Painting/Painting.cpp b/ArchitectureColoredPainting/src/Renderer/Painting/Painting.cpp
index afd7e04..2fd6d73 100644
--- a/ArchitectureColoredPainting/src/Renderer/Painting/Painting.cpp
+++ b/ArchitectureColoredPainting/src/Renderer/Painting/Painting.cpp
@@ -53,87 +53,40 @@ void Renderer::Painting::addElement(ElementWithTransform elementWithTransform)
 		elementPool.insert({ element, 0 });
 	}
 	elements.push_back(elementWithTransform);
+	elementTransformPool.emplace(elementWithTransform.transform.transform, 0);
 }
 
-void Renderer::Painting::addElement(const Element& element, const ElementTransform& transform)
+void Renderer::Painting::addElement(const BaseElement& element, const ElementTransform& transform)
 {
-	auto contour = element.contour;
-	auto it = elementStyleMap.find(element.style);
-	if (it == elementStyleMap.end())
-	{
-		std::vector<BaseStyle> baseStyles;
-		for (auto& style : element.style->toBaseStyles())
-		{
-			auto [iter, _] = styleSet.insert(style.material);
-			baseStyles.push_back(BaseStyle{ style.transform, *iter });
-		}
-		it = elementStyleMap.insert({ element.style, baseStyles }).first;
-	}
-	for (int i = 0; i < it->second.size(); i++)
-	{
-		auto& style = it->second[i];
-		ElementTransform trans = transform;
-		trans.applyTransformStyle(*style.transform);
-		trans.zIndex = trans.zIndex * 10 + i;
-
-		addElement(ElementWithTransform{ BaseElement{element.contour, style.material, element.ratio}, trans });
-	}
+	addElement({ element , transform });
 }
 
-Renderer::BaseTransform::BaseTransform(ElementTransform t)
-	: bound(glm::vec4(t.center - t.scale, t.center + t.scale))
-	, rotation(t.rotation)
-	, flip(t.flip)
-	, zIndex(t.zIndex)
+BvhTreeData Painting::encodeElementLeaf(const ElementWithTransform& e)
 {
-}
-
-void Renderer::Painting::addElement(std::shared_ptr<Element> element, QVector4D bound, float rotation, int zIndex)
-{
-
-}
-
-BvhTreeData Painting::encodeElementLeaf(ElementWithTransform e)
-{
-	glm::vec4 bound;
-	switch (e.element.style->type())
-	{
-	case MaterialStyleType::kStroke:
-	{
-		auto w = std::static_pointer_cast<MaterialStyleStroke>(e.element.style)->getHalfWidth();
-		glm::vec2 size = e.element.ratio < 1 ? glm::vec2(e.element.ratio, 1) : glm::vec2(1, 1 / e.element.ratio);
-		glm::vec2 scale = size * e.transform.scale;
-		bound = glm::vec4(e.transform.center - scale, e.transform.center + scale);
-		break;
-	}
-	case MaterialStyleType::kFill:
-	{
-		bound = glm::vec4(e.transform.center - e.transform.scale, e.transform.center + e.transform.scale);
-		break;
-	}
-	}
-	//bound = glm::vec4(e.transform.center - e.transform.scale, e.transform.center + e.transform.scale);
-	GLuint rightSon = (GLuint)(glm::mod(e.transform.rotation, 360.f) / 360.f * (1 << 16))
-		+ (e.transform.flip.x << 16) + (e.transform.flip.y << 17) + (e.transform.zIndex << 18);
-	return BvhTreeData(QVector4D(bound.x, bound.y, bound.z, bound.w), elementPool[e.element], rightSon);
+	QVector4D bound(e.transform.bound.x, e.transform.bound.y, e.transform.bound.z, e.transform.bound.w);
+	GLuint rightSon = elementPool[e.element] + (e.transform.zIndex << 18);
+	return { bound, elementTransformPool[e.transform.transform], rightSon };
 }
 
 void Painting::generateBuffers(QOpenGLFunctions_4_5_Core* glFunc)
 {
 	qDebug() << "Element Count: " << elementPool.size();
-	qDebug() << "Coutour Count: " << contourPool.size();
+	qDebug() << "Contour Count: " << contourPool.size();
 	qDebug() << "  Style Count: " << stylePool.size();
 
 	bvhChildren.clear();
 	bvhBounds.clear();
+	elementTransform.clear();
 	elementOffsets.clear();
 	elementIndex.clear();
 	elementData.clear();
 
 	for (int index = 0; auto & i : elementPool)
-	{
 		i.second = index++;
-	}
+	for (int index = 0; auto & i : elementTransformPool)
+		i.second = index++;
+
+		
 
 	std::vector<BvhTreeData> rootBvhTreeData;
 	for (auto& i : elements)
@@ -162,30 +115,35 @@ void Painting::generateBuffers(QOpenGLFunctions_4_5_Core* glFunc)
 		elementData.insert(elementData.end(), encodedStyle.begin(), encodedStyle.end());
 	}
 
+	for (auto & i : elementTransformPool)
+		elementTransform.emplace_back(i.first);
+
 	for (auto& i : elementPool)
 	{
 		//qDebug() <<"element:" << i.second;
 		//std::shared_ptr<ContourBuffer> contourBuffer = i.first.style->type() == MaterialStyleType::kStroke ? contourPool[i.first.contour].second : contourPool[i.first.contour].first;
 		auto& contourBuffer = contourPool[{i.first.contour, i.first.style->type()}];
-		elementOffsets.push_back({ contourBuffer.bvhOffset, stylePool[i.first.style], contourBuffer.pointsOffset, contourBuffer.linesOffset, glm::floatBitsToUint(i.first.ratio) });
+		elementOffsets.push_back({ contourBuffer.bvhOffset, stylePool[i.first.style], contourBuffer.pointsOffset, contourBuffer.linesOffset });
 		//std::cout << std::format("{} {} {} {}\n", contourBuffer->bvhOffset, stylePool[i.first->style], contourBuffer->pointsOffset, contourBuffer->linesOffset);
 	}
 
-	glFunc->glCreateBuffers(6, buffers.data());
+	glFunc->glCreateBuffers(7, buffers.data());
 	GLuint& bvhSSBO = buffers[0];
 	GLuint& bvhBoundSSBO = buffers[1];
-	GLuint& elementOffsetSSBO = buffers[2];
-	GLuint& elementIndexSSBO = buffers[3];
-	GLuint& elementDataSSBO = buffers[4];
-	GLuint& backgroundColorUBO = buffers[5];
+	GLuint& elementTransformSSBO = buffers[2];
+	GLuint& elementOffsetSSBO = buffers[3];
+	GLuint& elementIndexSSBO = buffers[4];
+	GLuint& elementDataSSBO = buffers[5];
+	GLuint& backgroundColorUBO = buffers[6];
 
 	glFunc->glNamedBufferData(buffers[0], bvhChildren.size() * sizeof(bvhChildren[0]), bvhChildren.data(), GL_STATIC_READ);
 	glFunc->glNamedBufferData(buffers[1], bvhBounds.size() * sizeof(bvhBounds[0]), bvhBounds.data(), GL_STATIC_READ);
-	glFunc->glNamedBufferData(buffers[2], elementOffsets.size() * sizeof(elementOffsets[0]), elementOffsets.data(), GL_STATIC_READ);
-	glFunc->glNamedBufferData(buffers[3], elementIndex.size() * sizeof(elementIndex[0]), elementIndex.data(), GL_STATIC_READ);
-	glFunc->glNamedBufferData(buffers[4], elementData.size() * sizeof(elementData[0]), elementData.data(), GL_STATIC_READ);
+	glFunc->glNamedBufferData(buffers[2], elementTransform.size() * sizeof(elementTransform[0]), elementTransform.data(), GL_STATIC_READ);
+	glFunc->glNamedBufferData(buffers[3], elementOffsets.size() * sizeof(elementOffsets[0]), elementOffsets.data(), GL_STATIC_READ);
+	glFunc->glNamedBufferData(buffers[4], elementIndex.size() * sizeof(elementIndex[0]), elementIndex.data(), GL_STATIC_READ);
+	glFunc->glNamedBufferData(buffers[5], elementData.size() * sizeof(elementData[0]), elementData.data(), GL_STATIC_READ);
 	glm::vec3 color(backgroundColor.redF(), backgroundColor.greenF(), backgroundColor.blueF());
-	glFunc->glNamedBufferData(buffers[5], sizeof(glm::vec3), &color, GL_STATIC_READ);
+	glFunc->glNamedBufferData(buffers[6], sizeof(glm::vec3), &color, GL_STATIC_READ);
 }
 
 GLuint Renderer::Painting::getElementCount()
@@ -223,3 +181,17 @@ bool Renderer::Painting::CompareMaterialStyle::operator()(const std::shared_ptr<
 	else
 		return left < right;
 }
+
+std::size_t Renderer::Painting::HashMat3x2::operator()(const glm::mat3x2& mat) const
+{
+	std::size_t result = 0;
+	constexpr long long P = 998244353;
+	long long base = 1;
+	for (int i = 0; i < 3; i++)
+		for (int j = 0; j < 2; j++)
+		{
+			result += base * mat[i][j];
+			base *= P;
+		}
+	return result;
+}
diff --git a/ArchitectureColoredPainting/src/Renderer/Painting/Painting.h b/ArchitectureColoredPainting/src/Renderer/Painting/Painting.h
index 9194040..cf18500 100644
--- a/ArchitectureColoredPainting/src/Renderer/Painting/Painting.h
+++ b/ArchitectureColoredPainting/src/Renderer/Painting/Painting.h
@@ -15,24 +15,13 @@ namespace Renderer
 	{
 		std::shared_ptr<Contour> contour;
 		std::shared_ptr<MaterialStyle> style;
-		float ratio; /// 宽高比
 		bool operator<(const BaseElement& e) const;
 	};
 
-	struct BaseTransform
-	{
-		glm::vec4 bound;
-		float rotation;
-		glm::bvec2 flip;
-		GLuint zIndex;
-		BaseTransform(ElementTransform t);
-	};
-
 	struct ElementWithTransform
 	{
 		BaseElement element;
 		ElementTransform transform;
-		//BaseTransform transform;
 	};
 
 	struct ContourBuffer
@@ -52,7 +41,6 @@ namespace Renderer
 		GLuint styleOffset;
 		GLuint pointsOffset;
 		GLuint linesOffset;
-		GLuint ratio;
 	};
 
 	class Painting
@@ -60,16 +48,16 @@ namespace Renderer
 	public:
 		std::vector<GLuint> bvhChildren;
 		std::vector<QVector4D> bvhBounds;
+		std::vector<glm::mat3x2> elementTransform;
 		std::vector<ElementOffset> elementOffsets;
 		std::vector<GLuint> elementIndex;
 		std::vector<GLfloat> elementData;
 		int paintingId = 0;
-		std::array<GLuint, 6> buffers;
+		std::array<GLuint, 7> buffers;
 		QColor backgroundColor;
 
 		Painting(QColor backgroundColor = Qt::white);
-		void addElement(const Element& element, const ElementTransform& transform);
-		void addElement(std::shared_ptr<Element> element, QVector4D bound, float rotation, int zIndex);
+		void addElement(const BaseElement& element, const ElementTransform& transform);
 		void generateBuffers(QOpenGLFunctions_4_5_Core* glFunc);
 		GLuint getElementCount();
 	private:
@@ -77,14 +65,15 @@ namespace Renderer
 		std::unordered_map<std::tuple<std::shared_ptr<Contour>, MaterialStyleType>, ContourBuffer, ContourHash> contourPool;
 		struct CompareMaterialStyle { bool operator()(const std::shared_ptr<MaterialStyle>&, const std::shared_ptr<MaterialStyle>&) const; };
 		std::set<std::shared_ptr<MaterialStyle>, CompareMaterialStyle> styleSet;
-		std::unordered_map<std::shared_ptr<ElementStyle>, std::vector<BaseStyle>> elementStyleMap;
 		std::unordered_map<std::shared_ptr<MaterialStyle>, GLuint> stylePool;
+		struct HashMat3x2 { std::size_t operator()(const glm::mat3x2&) const; };
+		std::unordered_map<glm::mat3x2, GLuint, HashMat3x2> elementTransformPool;
 		std::map<BaseElement, GLuint> elementPool;
 		std::vector<ElementWithTransform> elements;
 
 		void addElement(ElementWithTransform element);
 		void insertContourBuffer(ContourBuffer& buffer);
-		BvhTreeData encodeElementLeaf(ElementWithTransform e);
+		BvhTreeData encodeElementLeaf(const ElementWithTransform& e);
 	};
 }
 
diff --git a/ArchitectureColoredPainting/src/Renderer/Preview/ElementRenderer.cpp b/ArchitectureColoredPainting/src/Renderer/Preview/ElementRenderer.cpp
index 3be860f..259cc20 100644
--- a/ArchitectureColoredPainting/src/Renderer/Preview/ElementRenderer.cpp
+++ b/ArchitectureColoredPainting/src/Renderer/Preview/ElementRenderer.cpp
@@ -76,7 +76,7 @@ std::vector<GLfloat> generateStyleBuffer(const std::vector<BaseStyle>& styles)
 		styleBuffer.push_back(style.transform->scale.y);
 		styleBuffer.push_back(style.transform->rotation);
 		styleBuffer.push_back(glm::uintBitsToFloat(glm::packUnorm2x16(style.transform->flip)));
-		
+
 		auto encoded = style.material->encoded();
 		styleBuffer.insert(styleBuffer.end(), encoded.begin(), encoded.end());
 		//qDebug() << "style size" << styleBuffer.size();
@@ -88,13 +88,23 @@ QRectF calcBoundingRect(const QPainterPath& path, const std::vector<BaseStyle>&
 {
 	QRectF bound = path.boundingRect();
 
-	ElementTransform originTransform{ glm::vec2(bound.center().x(), bound.center().y()), glm::vec2(bound.width(), bound.height()), 0, glm::bvec2(false), 0 };
+	//ElementTransform originTransform{ glm::vec2(bound.center().x(), bound.center().y()), glm::vec2(bound.width(), bound.height()), 0, glm::bvec2(false), 0 };
 
 	glm::vec2 leftTop(std::numeric_limits<float>::max()), rightBottom(std::numeric_limits<float>::min());
 
 	for (auto& baseStyle : styles)
 	{
-		BaseTransform transform(originTransform.appliedTransformStyle(*baseStyle.transform));
+		struct BaseTransform
+		{
+			glm::vec4 bound;
+			float rotation = 0;
+			glm::bvec2 flip = glm::bvec2(false);
+			GLuint zIndex = 0;
+		};
+		//BaseTransform transform(originTransform.appliedTransformStyle(*baseStyle.transform));
+		glm::vec2 center(bound.center().x(), bound.center().y());
+		glm::vec2 scale(bound.width(), bound.height());
+		BaseTransform transform{ glm::vec4(center - scale, center + scale) };
 		if (baseStyle.material->type() == MaterialStyleType::kStroke)
 		{
 			float halfWidth = std::static_pointer_cast<MaterialStyleStroke>(baseStyle.material)->getHalfWidth();
diff --git a/ArchitectureColoredPainting/src/Renderer/RendererWidget.h b/ArchitectureColoredPainting/src/Renderer/RendererWidget.h
index 258a173..d5a3725 100644
--- a/ArchitectureColoredPainting/src/Renderer/RendererWidget.h
+++ b/ArchitectureColoredPainting/src/Renderer/RendererWidget.h
@@ -13,6 +13,7 @@ namespace Renderer
 		~RendererWidget();
 	public slots:
 		void currentTabChanged(int index);
+		
 	private:
 		Ui::RendererWidgetClass ui;
 	};
diff --git a/ArchitectureColoredPainting/src/Renderer/VirtualTextureManager.cpp b/ArchitectureColoredPainting/src/Renderer/VirtualTextureManager.cpp
index b926ad4..55a2c01 100644
--- a/ArchitectureColoredPainting/src/Renderer/VirtualTextureManager.cpp
+++ b/ArchitectureColoredPainting/src/Renderer/VirtualTextureManager.cpp
@@ -76,7 +76,7 @@ Renderer::VirtualTextureManager::VirtualTextureManager(GladGLContext* glMain)
 				pageIdBufferMutex.lock();
 				currentBuffer = 1 - currentBuffer;
 				pageIdBufferMutex.unlock();
-	
+
 				gl->BeginQuery(GL_TIME_ELAPSED, pageLoadTimeQuery);
 				updatePages(pageIds);
 				gl->EndQuery(GL_TIME_ELAPSED);
@@ -124,9 +124,9 @@ std::uint16_t Renderer::VirtualTextureManager::createVirtualTexture(Painting pai
 	glMain->TextureParameteri(metallicRoughness, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 	glMain->TextureStorage2D(metallicRoughness, levels, GL_RG8, GLsizei(textureSize), GLsizei(textureSize));
 
-	for (int i = 0; i < 5; i++)
+	for (int i = 0; i < 6; i++)
 		glMain->BindBufferBase(GL_SHADER_STORAGE_BUFFER, i, painting.buffers[i]);
-	glMain->BindBufferBase(GL_UNIFORM_BUFFER, 1, painting.buffers[5]);
+	glMain->BindBufferBase(GL_UNIFORM_BUFFER, 1, painting.buffers[6]);
 
 	for (auto level = levels - 1; level < levels; ++level)
 	{
@@ -152,8 +152,28 @@ std::uint16_t Renderer::VirtualTextureManager::createVirtualTexture(Painting pai
 
 			}
 	}
-	paintings.emplace_back(baseColor, metallicRoughness, painting.buffers);
-	return paintings.size();
+	if (const auto it = std::find_if(paintings.begin(), paintings.end(), [](const PaintingHandle& i) { return i.baseColor == 0; });
+		it != paintings.end())
+	{
+		*it = { baseColor, metallicRoughness, painting.buffers };
+		return it - paintings.begin() + 1;
+	}
+	else
+	{
+		paintings.emplace_back(baseColor, metallicRoughness, painting.buffers);
+		return paintings.size();
+	}
+
+}
+
+void Renderer::VirtualTextureManager::deleteVirtualTexture(std::uint16_t id)
+{
+	auto& painting = getPaintingHandle(id);
+	glMain->DeleteTextures(2, (GLuint*)&painting);
+	glMain->DeleteBuffers(7, painting.buffers.data());
+	painting.baseColor = 0;
+	painting.metallicRoughness = 0;
+	painting.buffers.fill(0);
 }
 
 Renderer::PaintingHandle& Renderer::VirtualTextureManager::getPaintingHandle(std::uint16_t id)
@@ -189,9 +209,9 @@ void Renderer::VirtualTextureManager::pageCommitmentById(const glm::u16vec2& pag
 	if (commit)
 	{
 		program.bind();
-		for (int i = 0; i < 5; i++)
+		for (int i = 0; i < 6; i++)
 			gl->BindBufferBase(GL_SHADER_STORAGE_BUFFER, i, painting.buffers[i]);
-		glMain->BindBufferBase(GL_UNIFORM_BUFFER, 1, painting.buffers[5]);
+		glMain->BindBufferBase(GL_UNIFORM_BUFFER, 1, painting.buffers[6]);
 		gl->Uniform2i(gl->GetUniformLocation(program.programId(), "pixelOffset"), static_cast<GLsizei>(pageSize) * page.x, static_cast<GLsizei>(pageSize) * page.y);
 		gl->BindImageTexture(0, painting.baseColor, level, GL_FALSE, 0, GL_READ_WRITE, GL_RGBA8);
 		gl->BindImageTexture(1, painting.metallicRoughness, level, GL_FALSE, 0, GL_READ_WRITE, GL_RG8);
diff --git a/ArchitectureColoredPainting/src/Renderer/VirtualTextureManager.h b/ArchitectureColoredPainting/src/Renderer/VirtualTextureManager.h
index 520800b..e5bbd24 100644
--- a/ArchitectureColoredPainting/src/Renderer/VirtualTextureManager.h
+++ b/ArchitectureColoredPainting/src/Renderer/VirtualTextureManager.h
@@ -15,7 +15,7 @@ namespace Renderer
 	{
 		GLuint baseColor;
 		GLuint metallicRoughness;
-		std::array<GLuint, 6> buffers;
+		std::array<GLuint, 7> buffers;
 	};
 
 	class VirtualTextureManager
@@ -24,11 +24,12 @@ namespace Renderer
 		VirtualTextureManager(GladGLContext* glMain);
 
 		/**
-		 * @brief
-		 * @param painting
+		 * @brief 创建彩绘虚拟纹理
+		 * @param painting 彩绘
 		 * @return 虚拟纹理id
 		 */
 		std::uint16_t createVirtualTexture(Painting painting);
+		void deleteVirtualTexture(std::uint16_t id);
 		PaintingHandle& getPaintingHandle(std::uint16_t id);
 		void tryUpdatePages(const std::vector<glm::u16vec2>& pageIds);