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1 | /*! |
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2 | * @file quadtree.h |
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3 | * Definition of a spatial data separation using quadtree |
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4 | |
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5 | This is the top element of the quadtree framework. A Quadtree is build of QuadtreeNodes, which are again separated |
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6 | into QuadtreeNodes until a certain depth is reached |
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7 | */ |
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8 | |
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9 | #ifndef _QUADTREE_H |
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10 | #define _QUADTREE_H |
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11 | |
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12 | |
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13 | #include "base_object.h" |
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14 | #include "abstract_model.h" |
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15 | |
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16 | |
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17 | class QuadtreeNode; |
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18 | class Material; |
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19 | class Vector; |
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20 | |
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21 | //! A class for quadtree separation of the world |
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22 | class Quadtree : public BaseObject { |
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23 | |
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24 | |
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25 | public: |
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26 | Quadtree(modelInfo* pModelInfo, const int treeDepth); |
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27 | virtual ~Quadtree(); |
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28 | |
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29 | QuadtreeNode* getQuadtreeFromPosition(const Vector& position) const; |
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30 | sTriangleExt* getTriangleFromPosition(const Vector& position) const; |
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31 | |
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32 | void drawTree() const; |
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33 | inline Material* getMaterial(int indexNode) const { return this->materials[indexNode % 4]; } |
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34 | |
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35 | |
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36 | private: |
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37 | void revertHashTable(QuadtreeNode** nodes); |
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38 | void sortHashTable(QuadtreeNode** nodes); |
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39 | |
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40 | |
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41 | private: |
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42 | QuadtreeNode* rootNode; //!< reference to the root node of the quadtree |
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43 | QuadtreeNode** nodes; //!< reference to all quadtree nodes (only leafs of the quad tree) |
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44 | modelInfo* pModelInfo; //!< reference to the modelInfo of the object |
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45 | int treeDepth; //!< depth of the tree |
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46 | |
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47 | float quadLength; //!< length of the leaf quadtree nodes |
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48 | Vector* offset; //!< vector to the left lower corner of the root quadtree node |
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49 | int maxIndex; //!< maximal index for the nodes array |
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50 | |
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51 | Material** materials; //!< materials for debug drawing purposes |
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52 | }; |
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53 | |
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54 | #endif /* _QUADTREE_H */ |
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