implement duplication SceneNode

inc/hgl/graph/SceneNode.h

@@ -31,6 +31,7 @@ namespace hgl
         public:
 
             SceneNode()=default;
+            SceneNode(SceneNode *);
             SceneNode(                      Renderable *ri  )                   {render_obj=ri;}
             SceneNode(const Matrix4f &mat                   ):SceneOrient(mat)  {}
             SceneNode(const Matrix4f &mat,  Renderable *ri  ):SceneOrient(mat)  {render_obj=ri;}
@@ -92,6 +93,29 @@ namespace hgl
                 return sn;
             }
 
+            SceneNode *CreateSubNode(SceneNode *node)
+            {
+                if(!node)
+                    return(nullptr);
+
+                SceneNode *sn=new SceneNode(node);
+
+                SubNode.Add(sn);
+                return node;
+            }
+
+            SceneNode *CreateSubNode(const Matrix4f &mat,SceneNode *node)
+            {
+                if(!node)
+                    return(nullptr);
+
+                SceneNode *sn=new SceneNode(mat);
+                sn->CreateSubNode(node);
+
+                SubNode.Add(sn);
+                return sn;
+            }
+
         public: //坐标相关方法
 
             virtual         void        SetBoundingBox      (const AABB &bb){BoundingBox=bb;}                           ///<设置绑定盒

inc/hgl/graph/SceneOrient.h

@@ -32,6 +32,7 @@ namespace hgl
         public:
 
             SceneOrient();
+            SceneOrient(const SceneOrient &);
             SceneOrient(const Matrix4f &mat);
             virtual ~SceneOrient()=default;
 

src/SceneGraph/SceneNode.cpp

@@ -4,6 +4,24 @@ namespace hgl
 {
     namespace graph
     {
+        SceneNode::SceneNode(SceneNode *node):SceneOrient(*node)
+        {
+            if(!node)
+                return;
+
+            BoundingBox=node->BoundingBox;
+            LocalBoundingBox=node->LocalBoundingBox;
+
+            render_obj=node->render_obj;
+
+            for(SceneNode *sn:node->SubNode)
+            {
+                SceneNode *new_sn=new SceneNode(sn);
+
+                SubNode.Add(new_sn);
+            }
+        }
+
         void SceneNode::SetRenderable(Renderable *ri)
         {
             render_obj=ri;

src/SceneGraph/SceneOrient.cpp

@@ -15,6 +15,11 @@ namespace hgl
             InverseLocalMatrix          =Identity4f;
             InverseLocalToWorldMatrix   =Identity4f;
         }
+        
+        SceneOrient::SceneOrient(const SceneOrient &so)
+        {
+            hgl_cpy(*this,so);
+        }
 
         SceneOrient::SceneOrient(const Matrix4f &mat)
         {