| 1 | /*! |
|---|
| 2 | * @file bv_tree.h |
|---|
| 3 | * Definition of a bounding volume tree |
|---|
| 4 | |
|---|
| 5 | */ |
|---|
| 6 | |
|---|
| 7 | #ifndef _OBB_TREE_NODE_H |
|---|
| 8 | #define _OBB_TREE_NODE_H |
|---|
| 9 | |
|---|
| 10 | #include "bv_tree_node.h" |
|---|
| 11 | |
|---|
| 12 | |
|---|
| 13 | |
|---|
| 14 | // FORWARD DECLARATION |
|---|
| 15 | class BoundingVolume; |
|---|
| 16 | class OBB; |
|---|
| 17 | class OBBTree; |
|---|
| 18 | class Plane; |
|---|
| 19 | class PNode; |
|---|
| 20 | //struct sVec3D; |
|---|
| 21 | |
|---|
| 22 | //! A class that represents a bounding volume tree |
|---|
| 23 | class OBBTreeNode : public BVTreeNode { |
|---|
| 24 | |
|---|
| 25 | |
|---|
| 26 | public: |
|---|
| 27 | OBBTreeNode(); |
|---|
| 28 | virtual ~OBBTreeNode(); |
|---|
| 29 | |
|---|
| 30 | virtual void spawnBVTree(const int depth, const sVec3D *verticesList, unsigned int length); |
|---|
| 31 | virtual void spawnBVTree(const int depth, const modelInfo& modInfo); |
|---|
| 32 | |
|---|
| 33 | BoundingVolume* getBV(int index) const { return (BoundingVolume*)this->bvElement; } |
|---|
| 34 | inline const int getIndex() { return this->treeIndex; } |
|---|
| 35 | inline void setTreeRef(OBBTree* tree) { this->obbTree = tree;} |
|---|
| 36 | |
|---|
| 37 | virtual void collideWith(BVTreeNode* treeNode, WorldEntity* nodeA, WorldEntity* nodeB); |
|---|
| 38 | |
|---|
| 39 | virtual void drawBV(int depth, int drawMode, const Vector& color = Vector(1,0,0), bool top = true) const; |
|---|
| 40 | |
|---|
| 41 | void debug() const; |
|---|
| 42 | |
|---|
| 43 | private: |
|---|
| 44 | void calculateBoxCovariance(OBB* box, const sVec3D* verticesList, unsigned int length); |
|---|
| 45 | void calculateBoxEigenvectors(OBB* box, const sVec3D* verticesList, unsigned int length); |
|---|
| 46 | void calculateBoxAxis(OBB* box, const sVec3D* verticesList, unsigned int length); |
|---|
| 47 | |
|---|
| 48 | void calculateBoxCovariance(OBB* box, const modelInfo& modInfo); |
|---|
| 49 | void calculateBoxEigenvectors(OBB* box, const modelInfo& modInfo); |
|---|
| 50 | void calculateBoxAxis(OBB* box, const modelInfo& modInfo); |
|---|
| 51 | |
|---|
| 52 | |
|---|
| 53 | void forkBox(OBB* box); |
|---|
| 54 | |
|---|
| 55 | bool overlapTest(OBB* boxA, OBB* boxB, WorldEntity* nodeA, WorldEntity* nodeB); |
|---|
| 56 | |
|---|
| 57 | protected: |
|---|
| 58 | OBB* bvElement; //!< the obb element |
|---|
| 59 | OBBTreeNode* nodeLeft; //!< ref to the left tree node |
|---|
| 60 | OBBTreeNode* nodeRight; //!< ref to the right tree node |
|---|
| 61 | |
|---|
| 62 | private: |
|---|
| 63 | unsigned int treeIndex; //!< Index number of the BV in the tree |
|---|
| 64 | const sVec3D* vertices; //!< pointer to the vertices data |
|---|
| 65 | int numOfVertices; //!< number of vertices in vertices data |
|---|
| 66 | int depth; //!< the depth of the node in the tree |
|---|
| 67 | static OBBTree* obbTree; //!< reference to the obb tree |
|---|
| 68 | Plane* separationPlane; //!< the separation plane of the obb |
|---|
| 69 | const sVec3D* sepPlaneCenter; //!< only needed to draw plane |
|---|
| 70 | int longestAxisIndex; //!< only needed to draw plane |
|---|
| 71 | |
|---|
| 72 | /* tmp saving place for obb variables */ |
|---|
| 73 | sVec3D* tmpVert1; //!< pointer to the vert data of obbox1 |
|---|
| 74 | sVec3D* tmpVert2; //!< pointer to the vert data of obbox1 |
|---|
| 75 | int tmpLen1; //!< len vert data obbox1 |
|---|
| 76 | int tmpLen2; //!< len vert data obbox2 |
|---|
| 77 | |
|---|
| 78 | static float** coMat; |
|---|
| 79 | static float** eigvMat; |
|---|
| 80 | static float* eigvlMat; |
|---|
| 81 | static int* rotCount; |
|---|
| 82 | }; |
|---|
| 83 | |
|---|
| 84 | #endif /* _OBB_TREE_NODE_H */ |
|---|
