[4614] | 1 | /*! |
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[5039] | 2 | * @file bv_tree.h |
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[4836] | 3 | * Definition of a bounding volume tree |
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[4541] | 4 | |
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[4614] | 5 | */ |
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[4541] | 6 | |
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| 7 | #ifndef _OBB_TREE_NODE_H |
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| 8 | #define _OBB_TREE_NODE_H |
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| 9 | |
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| 10 | #include "bv_tree_node.h" |
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| 11 | |
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[4550] | 12 | |
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| 13 | |
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[4541] | 14 | // FORWARD DEFINITION |
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| 15 | class BoundingVolume; |
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[4557] | 16 | class OBB; |
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[4622] | 17 | class OBBTree; |
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[4632] | 18 | class Plane; |
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[4700] | 19 | class PNode; |
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[4550] | 20 | //struct sVec3D; |
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[4541] | 21 | |
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| 22 | //! A class that represents a bounding volume tree |
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| 23 | class OBBTreeNode : public BVTreeNode { |
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| 24 | |
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| 25 | |
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[4614] | 26 | public: |
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| 27 | OBBTreeNode(); |
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| 28 | virtual ~OBBTreeNode(); |
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[4541] | 29 | |
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[4614] | 30 | virtual void spawnBVTree(const int depth, sVec3D *verticesList, const int length); |
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[4541] | 31 | |
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[4614] | 32 | BoundingVolume* getBV(int index) const { return (BoundingVolume*)this->bvElement; } |
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| 33 | inline const int getIndex() { return this->treeIndex; } |
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[4622] | 34 | inline void setTreeRef(OBBTree* tree) { this->obbTree = tree;} |
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[4541] | 35 | |
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[5028] | 36 | virtual void collideWith(BVTreeNode* treeNode, WorldEntity* nodeA, WorldEntity* nodeB); |
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[4541] | 37 | |
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[4702] | 38 | virtual void drawBV(int depth, int drawMode); |
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[4541] | 39 | |
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[4746] | 40 | void debug() const; |
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[4568] | 41 | |
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[4614] | 42 | private: |
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[4632] | 43 | void calculateBoxCovariance(OBB* box, sVec3D* verticesList, int length); |
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| 44 | void calculateBoxEigenvectors(OBB* box, sVec3D* verticesList, int length); |
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| 45 | void calculateBoxAxis(OBB* box, sVec3D* verticesList, int length); |
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[4614] | 46 | void forkBox(OBB* box); |
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[4541] | 47 | |
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[5028] | 48 | bool overlapTest(OBB* boxA, OBB* boxB, WorldEntity* nodeA, WorldEntity* nodeB); |
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[4541] | 49 | |
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[4614] | 50 | protected: |
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[4685] | 51 | OBB* bvElement; //!< the obb element |
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| 52 | OBBTreeNode* nodeLeft; //!< ref to the left tree node |
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| 53 | OBBTreeNode* nodeRight; //!< ref to the right tree node |
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[4541] | 54 | |
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[4614] | 55 | private: |
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| 56 | unsigned int treeIndex; //!< Index number of the BV in the tree |
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| 57 | sVec3D* vertices; //!< pointer to the vertices data |
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| 58 | int numOfVertices; //!< number of vertices in vertices data |
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| 59 | int depth; //!< the depth of the node in the tree |
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[4622] | 60 | static OBBTree* obbTree; //!< reference to the obb tree |
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[4632] | 61 | Plane* separationPlane; //!< the separation plane of the obb |
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[4836] | 62 | sVec3D* sepPlaneCenter; //!< only needed to draw plane @todo: separationPlane drawing |
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[4632] | 63 | int longestAxisIndex; //!< only needed to draw plane |
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[4630] | 64 | |
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| 65 | /* tmp saving place for obb variables */ |
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[4632] | 66 | sVec3D* tmpVert1; //!< pointer to the vert data of obbox1 |
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| 67 | sVec3D* tmpVert2; //!< pointer to the vert data of obbox1 |
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| 68 | int tmpLen1; //!< len vert data obbox1 |
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| 69 | int tmpLen2; //!< len vert data obbox2 |
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[4630] | 70 | |
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[5046] | 71 | static float** coMat; //!< temp covariance matrice save place - consumes less mem |
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| 72 | static float** eigvMat; //!< temp eigenvector matrice save place |
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| 73 | static float* eigvlMat; //!< temp eigenvalue vector save place |
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| 74 | static int* rotCount; //!< temp rotations count save place: how many givens-rotations where needed to transform the matrix :) |
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[4638] | 75 | |
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[5046] | 76 | GLUquadricObj* sphereObj; |
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[4541] | 77 | }; |
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| 78 | |
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| 79 | #endif /* _OBB_TREE_NODE_H */ |
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