[372] | 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 |
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[409] | 10 | class RenderSimulator;
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[372] | 11 | class SceneGraph;
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[429] | 12 | class Exporter;
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[439] | 13 | class ViewCellsManager;
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[445] | 14 | class BspTree;
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| 15 | class VspKdTree;
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| 16 | class VspBspTree;
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[372] | 17 |
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| 18 | /** Namespace for the external visibility preprocessor
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| 19 |
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| 20 | This namespace includes all classes which are created by the VUT (Vienna University
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| 21 | of Technology) for the External Visibility Preprocessor of the GTP (GameTools Project)
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| 22 | (www.gametools.org).
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| 23 | */
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| 24 |
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| 25 | /** Main class of the visibility preprocessor. Responsible for loading and
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| 26 | saving of the input and output files. Initiates construction of the kD-tree,
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| 27 | viewcell loading/generation and the visibility computation itself.
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| 28 | */
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| 29 | class Preprocessor {
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| 30 | public:
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| 31 | /** Default constructor initialising e.g., KD tree and BSP tree.
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| 32 | */
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| 33 | Preprocessor();
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| 34 |
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| 35 | virtual ~Preprocessor();
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| 36 |
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| 37 | /** Load the input scene.
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| 38 | @param filename file to load
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| 39 | @return true on success
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| 40 | */
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| 41 | virtual bool LoadScene(const string filename);
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| 42 |
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| 43 | /** Export all preprocessed data in a XML format understandable by the
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| 44 | PreprocessingInterface of the GtpVisibilityPreprocessor Module. The file can be compressed depending
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| 45 | on the environement settings.
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| 46 | @return true on successful export
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| 47 | */
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| 48 | virtual bool ExportPreprocessedData(const string filename);
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| 49 |
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| 50 | /** Build the KdTree of currently loaded occluders/occludees/viewcells. The construction
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| 51 | is driven by the environment settings, which also sais which of the three types of
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| 52 | entities should be used to drive the heuristical construction (only occluders by default)
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| 53 | */
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| 54 | virtual bool BuildKdTree();
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| 55 |
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| 56 | /** Compute visibility method. This method has to be reimplemented by the actual
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| 57 | Preprocessor implementation (e.g. SamplingPreprocessor, ExactPreprocessor,
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| 58 | GlobalSamplingpreprocessor)
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| 59 | */
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| 60 | virtual bool ComputeVisibility() = 0;
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| 61 |
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[439] | 62 | /** View cells are either loaded or prepared for generation, according to the chosen environment
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| 63 | object. Important evironment options are, e.g, the view cell type.
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| 64 | Should be done after scene loading (i.e., some options are based on scene type).
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| 65 | */
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| 66 | bool PrepareViewCells();
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[372] | 67 |
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| 68 | bool
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| 69 | Export( const string filename,
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| 70 | const bool scene,
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| 71 | const bool kdtree,
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| 72 | const bool bsptree
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| 73 | );
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| 74 |
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| 75 |
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| 76 | virtual void KdTreeStatistics(ostream &s);
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| 77 | virtual void BspTreeStatistics(ostream &s);
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| 78 |
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| 79 | /// scene graph loaded from file
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| 80 | SceneGraph *mSceneGraph;
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| 81 |
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| 82 | /// kD-tree organizing the scene graph (occluders + occludees) + viewcells
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| 83 | KdTree *mKdTree;
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| 84 |
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[445] | 85 | /// View space partition bsp tree
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| 86 | VspBspTree *mVspBspTree;
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[372] | 87 | /// list of all loaded occluders
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| 88 | ObjectContainer mOccluders;
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| 89 | /// list of all loaded occludees
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| 90 | ObjectContainer mOccludees;
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[439] | 91 |
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[372] | 92 | /// BSP tree representing the viewcells
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| 93 | BspTree *mBspTree;
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| 94 |
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[439] | 95 | ViewCellsManager *mViewCellsManager;
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[409] | 96 |
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[411] | 97 | /** Kd tree inducing a coarse partition of view space that are the building
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| 98 | blocks for view cells.
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| 99 | */
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| 100 | VspKdTree *mVspKdTree;
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[429] | 101 |
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| 102 | protected:
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| 103 | |
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[440] | 104 | /////////////////////////
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[429] | 105 |
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[440] | 106 | /// samples used for construction of the BSP view cells tree.
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[429] | 107 | int mBspConstructionSamples;
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[440] | 108 | /// samples used for construction of the VSP KD tree.
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| 109 | int mVspKdConstructionSamples;
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[372] | 110 | };
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| 111 |
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| 112 |
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| 113 |
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| 114 |
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| 115 |
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| 116 | #endif
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