[162] | 1 | #ifndef _Preprocessor_H__ |
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| 2 | #define _Preprocessor_H__ |
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| 3 | |
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| 4 | #include <string> |
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| 5 | using namespace std; |
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| 6 | #include "Containers.h" |
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| 7 | #include "Mesh.h" |
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| 8 | #include "KdTree.h" |
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| 9 | #include "ViewCellBsp.h" |
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[321] | 10 | #include "ViewCell.h" |
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[162] | 11 | //#include "SceneGraph.h" |
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| 12 | |
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| 13 | class SceneGraph; |
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| 14 | |
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| 15 | /** Namespace for the external visibility preprocessor |
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| 16 | |
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| 17 | This namespace includes all classes which are created by the VUT (Vienna University |
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| 18 | of Technology) for the External Visibility Preprocessor of the GTP (GameTools Project) |
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| 19 | (www.gametools.org). |
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| 20 | */ |
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| 21 | |
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| 22 | /** Main class of the visibility preprocessor. Responsible for loading and |
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| 23 | saving of the input and output files. Initiates construction of the kD-tree, |
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| 24 | viewcell loading/generation and the visibility computation itself. |
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| 25 | */ |
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| 26 | class Preprocessor { |
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| 27 | public: |
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[262] | 28 | /** Default constructor initialising e.g., KD tree and BSP tree. |
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| 29 | */ |
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| 30 | Preprocessor(); |
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| 31 | |
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[329] | 32 | virtual ~Preprocessor(); |
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[261] | 33 | |
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[162] | 34 | /** Load the input scene. |
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| 35 | @param filename file to load |
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| 36 | @return true on success |
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| 37 | */ |
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| 38 | virtual bool LoadScene(const string filename); |
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| 39 | |
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| 40 | /** Load the input viewcells. The input viewcells should be given as a collection |
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| 41 | of meshes. Each mesh is assume to form a bounded polyhedron defining the interior of |
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| 42 | the viewcell. The method then builds a BSP tree of these view cells. |
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| 43 | @param filename file to load |
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| 44 | @return true on success |
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| 45 | */ |
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[261] | 46 | virtual bool LoadViewCells(const string filename); |
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[162] | 47 | |
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| 48 | /** Generate the viewCells automatically. The particular algorithm to be used depends |
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| 49 | on the environment setting. Initially the generated viewcells will cover the whole |
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| 50 | bounding volume of the scene. They can be pruned later depending on the results |
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| 51 | of visibility computations. |
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| 52 | @return true on successful viewcell generation. |
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| 53 | */ |
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[261] | 54 | virtual bool GenerateViewCells(); |
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[162] | 55 | |
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| 56 | /** Export all preprocessed data in a XML format understandable by the |
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| 57 | PreprocessingInterface of the GtpVisibilityPreprocessor Module. The file can be compressed depending |
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| 58 | on the environement settings. |
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| 59 | @return true on successful export |
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| 60 | */ |
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| 61 | virtual bool ExportPreprocessedData(const string filename); |
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| 62 | |
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| 63 | /** Build the KdTree of currently loaded occluders/occludees/viewcells. The construction |
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| 64 | is driven by the environment settings, which also sais which of the three types of |
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| 65 | entities should be used to drive the heuristical construction (only occluders by default) |
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| 66 | */ |
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| 67 | virtual bool BuildKdTree(); |
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| 68 | |
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[234] | 69 | /** Build the BSP tree of currently loaded occluders/occludees/viewcells. The construction |
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[263] | 70 | is driven by the environment settings, which also says which of the three types of |
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[234] | 71 | entities should be used to drive the heuristical construction (only occluders by default) |
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| 72 | */ |
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[329] | 73 | virtual bool BuildBspTree() = 0; |
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[234] | 74 | |
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[162] | 75 | /** Compute visibility method. This method has to be reimplemented by the actual |
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| 76 | Preprocessor implementation (e.g. SamplingPreprocessor, ExactPreprocessor, |
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| 77 | GlobalSamplingpreprocessor) |
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| 78 | */ |
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| 79 | virtual bool ComputeVisibility() = 0; |
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| 80 | |
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| 81 | |
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| 82 | bool |
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| 83 | Export( const string filename, |
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| 84 | const bool scene, |
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[242] | 85 | const bool kdtree, |
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| 86 | const bool bsptree |
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[162] | 87 | ); |
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| 88 | |
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| 89 | |
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| 90 | virtual void KdTreeStatistics(ostream &s); |
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[234] | 91 | virtual void BspTreeStatistics(ostream &s); |
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| 92 | |
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[308] | 93 | void DeleteViewCells(); |
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| 94 | |
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[310] | 95 | /** Parses the view cell options |
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| 96 | */ |
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| 97 | bool ParseViewCellsOptions(); |
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| 98 | |
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[162] | 99 | /// scene graph loaded from file |
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| 100 | SceneGraph *mSceneGraph; |
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[262] | 101 | |
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[162] | 102 | /// kD-tree organizing the scene graph (occluders + occludees) + viewcells |
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| 103 | KdTree *mKdTree; |
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| 104 | |
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| 105 | /// list of all loaded occluders |
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[176] | 106 | ObjectContainer mOccluders; |
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[162] | 107 | /// list of all loaded occludees |
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[176] | 108 | ObjectContainer mOccludees; |
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[162] | 109 | /// list of all loaded/generated viewcells |
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[261] | 110 | ViewCellContainer mViewCells; |
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[162] | 111 | |
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[262] | 112 | /// BSP tree representing the viewcells |
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| 113 | BspTree *mBspTree; |
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[297] | 114 | |
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[321] | 115 | /// the view cell corresponding to unbounded space |
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| 116 | ViewCell mUnbounded; |
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[162] | 117 | }; |
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| 118 | |
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| 119 | |
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| 120 | |
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| 121 | |
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| 122 | |
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| 123 | #endif |
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