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class CSceneNode { protected: //members //Array of Children... CSceneNode **ppChildren; int iChildrenCount; //primitive IIntersectable *pData; //recursive functions CSceneNode* Copy(CSceneNode *node) { CSceneNode *res = new CSceneNode(); //copy data directly //....todo res->Data = node->Data; res->iChildrenCount = 0; res->ppChildren = NULL; //is node leaf? if(!node->isLeaf()) { //traverse SceneNode res->ppChildren = new CSceneNode*[node->iChildrenCount]; res->iChildrenCount = node->iChildrenCount; //alle Kinder kopieren for(int i = 0; i < node->iChildrenCount; i++) { res->ppChildren[i] = Copy(node->ppChildren[i]); } } return res; } void printR(CSceneNode *node, int level) { std::cout<<"Value is "<<node->Data<<" on level "<<level<<std::endl; if(!node->isLeaf()) { for(int i = 0; i < node->iChildrenCount; i++) printR(node->ppChildren[i], level + 1); } } CSceneNode* clear(CSceneNode *node) { //is Leaf? if(node->isLeaf()) { //only delete Data //and then delete Pointer SAFE_DELETE(node->pData); //delete node himself! SAFE_DELETE(node); //node should be NULL! if(node != NULL)std::cout<<"Bad error!"<<std::endl; //done! return NULL; } else { //this is no leaf, so delete its children for(int i = 0; i < node->iChildrenCount; i++) { node->ppChildren[i] = clear(node->ppChildren[i]); //child shall be NULL! if(node->ppChildren[i] != NULL)std::cout<<"Bad error!"<<std::endl; //deleted... } //so now delete array of pointers! SAFE_DELETE_A(node->ppChildren); node->iChildrenCount = 0; //array shall be NULL! if(node->ppChildren != NULL)std::cout<<"Bad error!"<<std::endl; //secure NULL! node->ppChildren = NULL; //delete Node Data, and Node himself! SAFE_DELETE(node->pData); //delete node himself! SAFE_DELETE(node); //node should be NULL! if(node != NULL)std::cout<<"Bad error!"<<std::endl; //done! return NULL; } } public: int Data; //constructor CSceneNode() { ppChildren = NULL; iChildrenCount = 0; pData = NULL; } CSceneNode(int d) {ppChildren = NULL; iChildrenCount = 0; Data = d; pData = NULL;} //destructor ~CSceneNode() { std::cout<<"dtor of "<<Data<<" with "<<iChildrenCount<<" children"<<std::endl; SAFE_DELETE(pData); for(int i = 0; i < iChildrenCount; i++) { SAFE_DELETE(ppChildren[i]); } iChildrenCount = 0; SAFE_DELETE_A(ppChildren); std::cout<<ppChildren<<std::endl; //Clear(); } //make this SceneNode, a copy of another void CopyOf(CSceneNode *node) { Data = node->Data; //is node leaf? if(node->isLeaf()) { //copy data directly //....todo Data = node->Data; } else { //traverse SceneNode ppChildren = new CSceneNode*[node->iChildrenCount]; iChildrenCount = node->iChildrenCount; //alle Kinder kopieren for(int i = 0; i < node->iChildrenCount; i++) { ppChildren[i] = Copy(node->ppChildren[i]); } } } //add an element void Append(CSceneNode& node) { //extend array CSceneNode **tmp = new CSceneNode*[iChildrenCount + 1]; //copy array for(int i = 0; i < iChildrenCount; i++) { tmp[i] = ppChildren[i]; } //delete old pointer SAFE_DELETE_A(ppChildren); //set node (tmp[iChildrenCount]) = new CSceneNode(); if(!node.isLeaf()) { CSceneNode _node = node; //*(tmp[iChildrenCount]) = node; tmp[iChildrenCount] = Copy(&_node); } else *(tmp[iChildrenCount]) = node; //inc count iChildrenCount++; //set pointer ppChildren = tmp; } void print() { printR(this, 0); } void Clear() { //delete via clear! if(isLeaf()) { //only delete Data //and then delete Pointer SAFE_DELETE(pData); } else { //this is no leaf, so delete its children for(int i = 0; i <iChildrenCount; i++) { ppChildren[i] = clear(ppChildren[i]); //child shall be NULL! if(ppChildren[i] != NULL)std::cout<<"Bad error!"<<std::endl; //deleted... } //so now delete array of pointers! SAFE_DELETE_A(ppChildren); iChildrenCount = 0; //array shall be NULL! if(ppChildren != NULL)std::cout<<"Bad error!"<<std::endl; //secure NULL! ppChildren = NULL; //delete Node Data, and Node himself! SAFE_DELETE(pData); } } //Helperfunction bool isLeaf() {return ppChildren == NULL; } }; |
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CSceneNode sub = CSceneNode(3); sub.Append(CSceneNode(4)); sub.Append(CSceneNode(5)); CSceneNode top = CSceneNode(1); top.Append(sub); std::cout<<"exit<<std::endl; |
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CSceneNode::~CSceneNode() { parent.set_dead(this); } |
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