[68] | 1 | #ifndef _Preprocessor_H__ |
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| 2 | #define _Preprocessor_H__ |
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| 3 | |
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| 4 | #include "Containers.h" |
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| 5 | #include "Mesh.h" |
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| 6 | #include "KdTree.h" |
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| 7 | #include "ViewCellBsp.h" |
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| 8 | #include "SceneGraph.h" |
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[74] | 9 | #include <string> |
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[68] | 10 | |
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| 11 | /** Namespace for the external visibility preprocessor |
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| 12 | |
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| 13 | This namespace includes all classes which are created by the VUT (Vienna University |
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| 14 | of Technology) for the External Visibility Preprocessor of the GTP (GameTools Project) |
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| 15 | (www.gametools.org). |
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| 16 | */ |
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| 17 | namespace GtpVisibilityPreprocessor { |
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| 18 | /** Main class of the visibility preprocessor. Responsible for loading and |
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| 19 | saving of the input and output files. Initiates construction of the kD-tree, |
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| 20 | viewcell loading/generation and the visibility computation itself. |
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| 21 | */ |
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| 22 | class Preprocessor { |
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| 23 | public: |
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| 24 | /** Load the input scene. |
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| 25 | @param filename file to load |
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| 26 | @return true on success |
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| 27 | */ |
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| 28 | virtual bool LoadScene(const string filename); |
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| 29 | |
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| 30 | /** Load the input viewcells. The input viewcells should be given as a collection |
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| 31 | of meshes. Each mesh is assume to form a bounded polyhedron defining the interior of |
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| 32 | the viewcell. The method then builds a BSP tree of these view cells. |
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| 33 | @param filename file to load |
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| 34 | @return true on success |
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| 35 | */ |
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[261] | 36 | virtual bool LoadViewCells(const string filename); |
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[68] | 37 | |
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| 38 | /** Generate the viewCells automatically. The particular algorithm to be used depends |
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| 39 | on the environment setting. Initially the generated viewcells will cover the whole |
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| 40 | bounding volume of the scene. They can be pruned later depending on the results |
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| 41 | of visibility computations. |
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| 42 | @return true on successful viewcell generation. |
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| 43 | */ |
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[261] | 44 | virtual bool GenerateViewCells(); |
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[68] | 45 | |
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| 46 | /** Export all preprocessed data in a XML format understandable by the |
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| 47 | PreprocessingInterface of the GtpVisibilityPreprocessor Module. The file can be compressed depending |
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| 48 | on the environement settings. |
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| 49 | @return true on successful export |
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| 50 | */ |
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| 51 | virtual bool ExportPreprocessedData(const string filename); |
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| 52 | |
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| 53 | /** Build the KdTree of currently loaded occluders/occludees/viewcells. The construction |
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| 54 | is driven by the environment settings, which also sais which of the three types of |
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| 55 | entities should be used to drive the heuristical construction (only occluders by default) |
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| 56 | */ |
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| 57 | virtual bool BuildKdTree(); |
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| 58 | |
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| 59 | /** Compute visibility method. This method has to be reimplemented by the actual |
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| 60 | Preprocessor implementation (e.g. SamplingPreprocessor, ExactPreprocessor, |
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| 61 | GlobalSamplingpreprocessor) |
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| 62 | */ |
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| 63 | virtual bool ComputeVisibility() = 0; |
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| 64 | |
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| 65 | |
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| 66 | protected: |
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| 67 | /// scene graph loaded from file |
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| 68 | SceneGraph *mSceneGraph; |
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| 69 | /// BSP tree representing the viewcells |
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[221] | 70 | BspTree *mViewCellBspTree; |
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[68] | 71 | /// kD-tree organizing the scene graph (occluders + occludees) + viewcells |
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| 72 | KdTree *mKdTree; |
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| 73 | |
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| 74 | /// list of all loaded occluders |
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| 75 | MeshContainer mOccluders; |
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| 76 | /// list of all loaded occludees |
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| 77 | MeshContainer mOccludees; |
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| 78 | /// list of all loaded/generated viewcells |
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| 79 | ViewCellContainer mViewcells; |
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| 80 | |
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| 81 | }; |
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| 82 | |
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| 83 | }; |
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| 84 | |
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| 85 | |
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| 86 | |
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| 87 | |
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| 88 | #endif |
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