add label

src/effects/ConeWave.cpp

@@ -66,10 +66,10 @@ void ConeWave::Render(double dt) {
 
 void ConeWave::InitGeode() {
     CreateTexturedCone(this);
-    //getOrCreateStateSet()->setMode(GL_LIGHTING, osg::StateAttribute::OFF);
-    //getOrCreateStateSet()->setMode(GL_BLEND, osg::StateAttribute::ON);
-    //getOrCreateStateSet()->setRenderingHint(osg::StateSet::TRANSPARENT_BIN);
-    //setCullingActive(false);
+    getOrCreateStateSet()->setMode(GL_LIGHTING, osg::StateAttribute::OFF);
+    getOrCreateStateSet()->setMode(GL_BLEND, osg::StateAttribute::ON);
+    getOrCreateStateSet()->setRenderingHint(osg::StateSet::TRANSPARENT_BIN);
+    setCullingActive(false);
 }
 
 void ConeWave::Destory() {

src/entities/ComponentFactory.cpp

@@ -9,6 +9,7 @@
 #include "entities/ChaffBombsComponent.h"
 #include "entities/ConeWaveComponent.h"
 #include "entities/DashedLineComponent.h"
+#include "entities/LabelComponent.h"
 
 //Component::Component(QObject* parent)
 //    : QObject(parent) {
@@ -36,6 +37,8 @@ SceneComponent* ComponentFactory::Create(const QString& name, SceneComponent* pa
         return new ConeWaveComponent(parenet);
     } else if ("DashedLineComponent" == name) {
         return new DashedLineComponent(parenet);
+    } else if ("LabelComponent" == name) {
+        return new LabelComponent(parenet);
     }
     return nullptr;
 }

src/entities/LabelComponent.cpp

@@ -0,0 +1,184 @@
+#include "entities/LabelComponent.h"
+
+#include <osg/Billboard>
+#include <osg/StateSet>
+#include <osg/BlendFunc>
+#include <osg/Depth>
+#include <osgText/Font>
+
+#include "entities/Entity.h"
+#include "common/SpdLogger.h"
+
+LabelComponent::LabelComponent(SceneComponent* parent)
+    : SceneComponent(parent)
+    , text_("Label")
+    , fontSize_(16.0f)
+    , color_(1.0f, 1.0f, 1.0f, 1.0f)
+    , visible_(true)
+    , needUpdate_(true) {
+}
+
+LabelComponent::~LabelComponent() {
+}
+
+std::string LabelComponent::GetTypeName() {
+    return "LabelComponent";
+}
+
+void LabelComponent::AttachEntity(Entity* entity) {
+    SceneComponent::AttachEntity(entity);
+    
+    if (entity && !entity->GetName().isEmpty()) {
+		LOG_INFO("LabelComponent: Attaching to entity '{}'", entity->GetName().toUtf8().data());
+        SetText(entity->GetName().toLocal8Bit().data());
+
+        Entity* entity = GetEntity();
+        if (nullptr != entity) {
+            connect(entity, &Entity::NameChanged, this, &LabelComponent::UpdateText);
+        }
+
+        CreateTextNode();
+    }
+}
+
+bool LabelComponent::SetAttribute(const char* name, const char* value) {
+    if (0 == strcmp(name, "text")) {
+        SetText(value);
+        return true;
+    } else if (0 == strcmp(name, "fontSize")) {
+        SetFontSize(static_cast<float>(atof(value)));
+        return true;
+    } else if (0 == strcmp(name, "visible")) {
+        SetVisible(0 == strcmp(value, "true"));
+        return true;
+    } else if (0 == strcmp(name, "color")) {
+        float r, g, b, a = 1.0f;
+        int parsed = sscanf(value, "%f,%f,%f,%f", &r, &g, &b, &a);
+        if (parsed >= 3) {
+            SetColor(osg::Vec4(r, g, b, a));
+            return true;
+        }
+    }
+
+    return SceneComponent::SetAttribute(name, value);
+}
+
+bool LabelComponent::SaveAttribute(tinyxml2::XMLElement* element) {
+    element->SetAttribute("text", text_.c_str());
+    element->SetAttribute("fontSize", fontSize_);
+    element->SetAttribute("visible", visible_ ? "true" : "false");
+    
+    // 保存颜色
+    char colorStr[64];
+    sprintf(colorStr, "%.2f,%.2f,%.2f,%.2f", color_.r(), color_.g(), color_.b(), color_.a());
+    element->SetAttribute("color", colorStr);
+    
+    return SceneComponent::SaveAttribute(element);
+}
+
+std::string LabelComponent::GetSelfTypeName() {
+    return LabelComponent::GetTypeName();
+}
+
+void LabelComponent::Begin() {
+    SceneComponent::Begin();
+
+	
+}
+
+void LabelComponent::Update(double dt) {
+    SceneComponent::Update(dt);
+    
+    if (needUpdate_) {
+        UpdateTextNode();
+        needUpdate_ = false;
+    }
+}
+
+void LabelComponent::End() {
+    SceneComponent::End();
+    
+    Entity* entity = GetEntity();
+    if (nullptr != entity) {
+        disconnect(entity, &Entity::NameChanged, this, &LabelComponent::UpdateText);
+    }
+}
+
+void LabelComponent::AddToRender() {
+    SceneComponent::AddToRender();
+}
+
+void LabelComponent::SetText(const std::string& text) {
+    if (text_ != text) {
+        text_ = text;
+        needUpdate_ = true;
+    }
+}
+
+void LabelComponent::SetFontSize(float size) {
+    if (fontSize_ != size) {
+        fontSize_ = size;
+        needUpdate_ = true;
+    }
+}
+
+void LabelComponent::SetColor(const osg::Vec4& color) {
+    if (color_ != color) {
+        color_ = color;
+        needUpdate_ = true;
+    }
+}
+
+void LabelComponent::SetVisible(bool visible) {
+    if (visible_ != visible) {
+        visible_ = visible;
+        if (textGeode_.valid()) {
+            textGeode_->setNodeMask(visible_ ? 0xffffffff : 0x0);
+        }
+    }
+}
+
+void LabelComponent::CreateTextNode() {
+    if (!textGeode_.valid()) {
+        textGeode_ = new osg::Geode();
+        textNode_ = new osgText::Text();
+        
+        textNode_->setAlignment(osgText::Text::CENTER_CENTER);
+        textNode_->setAxisAlignment(osgText::Text::SCREEN);
+        textNode_->setCharacterSizeMode(osgText::Text::SCREEN_COORDS);
+		textNode_->setText(text_);
+        
+        textGeode_->addDrawable(textNode_.get());
+        
+        osg::StateSet* stateSet = textGeode_->getOrCreateStateSet();
+        stateSet->setMode(GL_BLEND, osg::StateAttribute::ON);
+        stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::OFF);
+        stateSet->setRenderingHint(osg::StateSet::TRANSPARENT_BIN);
+        stateSet->setAttributeAndModes(new osg::BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA));
+        
+		osg::ref_ptr<osg::MatrixTransform> mt = new osg::MatrixTransform();
+		mt->addChild(textGeode_);
+        if (!mt_.valid()) {
+            mt_ = mt;
+        }
+        
+        needUpdate_ = true;
+    }
+}
+
+void LabelComponent::UpdateTextNode() {
+    if (textNode_.valid()) {
+        textNode_->setText(text_);
+        textNode_->setCharacterSize(fontSize_);
+        textNode_->setColor(color_);
+        
+        textNode_->setPosition(osg::Vec3(0.0f, 0.0f, 0.0f));
+        
+        SPDLOG_INFO("LabelComponent: Updated text '{}' with size {}", text_, fontSize_);
+    }
+}
+
+void LabelComponent::UpdateText(const QString& text) {
+	SetText(text.toLocal8Bit().data());
+	needUpdate_ = true;
+}

src/entities/LabelComponent.h

@@ -0,0 +1,57 @@
+#pragma once
+
+#include "entities/SceneComponent.h"
+
+#include <qstring.h>
+
+#include <osg/Geode>
+#include <osgText/Text>
+#include <string>
+
+class LabelComponent : public SceneComponent {
+    Q_OBJECT
+
+public:
+    explicit LabelComponent(SceneComponent* parent = nullptr);
+    ~LabelComponent();
+
+    static std::string GetTypeName();
+
+    void AttachEntity(class Entity* owner) override;
+    bool SetAttribute(const char* name, const char* value) override;
+    bool SaveAttribute(tinyxml2::XMLElement* element) override;
+    std::string GetSelfTypeName() override;
+
+    void Begin() override;
+    void Update(double dt) override;
+	void End() override;
+    void AddToRender() override;
+
+    // 标签相关方法
+    void SetText(const std::string& text);
+    const std::string& GetText() const { return text_; }
+    
+    void SetFontSize(float size);
+    float GetFontSize() const { return fontSize_; }
+    
+    void SetColor(const osg::Vec4& color);
+    const osg::Vec4& GetColor() const { return color_; }
+    
+    void SetVisible(bool visible);
+    bool IsVisible() const { return visible_; }
+
+protected:
+    void CreateTextNode();
+    void UpdateTextNode();
+	void UpdateText(const QString& text);
+
+protected:
+    std::string text_;
+    float fontSize_;
+    osg::Vec4 color_;
+    bool visible_;
+    bool needUpdate_;
+    
+    osg::ref_ptr<osg::Geode> textGeode_;
+    osg::ref_ptr<osgText::Text> textNode_;
+}; 

src/entities/SceneComponent.h

@@ -1,5 +1,6 @@
 #pragma once
 
+#include <vector>
 #include "entities/Component.h"
 //#include "entities/Entity.h"
 #include "utils/Transform.h"