[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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[492] | 10 | #include <QObject>
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| 11 |
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[409] | 12 | class RenderSimulator;
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[372] | 13 | class SceneGraph;
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[429] | 14 | class Exporter;
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[439] | 15 | class ViewCellsManager;
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[445] | 16 | class BspTree;
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| 17 | class VspKdTree;
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| 18 | class VspBspTree;
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[468] | 19 | class RenderSimulator;
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[490] | 20 | struct VssRayContainer;
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[372] | 21 |
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[496] | 22 | class GlRendererBuffer;
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[490] | 23 |
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[372] | 24 | /** Namespace for the external visibility preprocessor
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| 25 |
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| 26 | This namespace includes all classes which are created by the VUT (Vienna University
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| 27 | of Technology) for the External Visibility Preprocessor of the GTP (GameTools Project)
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| 28 | (www.gametools.org).
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| 29 | */
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| 30 |
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| 31 | /** Main class of the visibility preprocessor. Responsible for loading and
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| 32 | saving of the input and output files. Initiates construction of the kD-tree,
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| 33 | viewcell loading/generation and the visibility computation itself.
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| 34 | */
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[492] | 35 | class Preprocessor : public QObject {
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| 36 | Q_OBJECT
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| 37 |
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[372] | 38 | public:
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| 39 | /** Default constructor initialising e.g., KD tree and BSP tree.
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| 40 | */
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| 41 | Preprocessor();
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| 42 |
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| 43 | virtual ~Preprocessor();
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| 44 |
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| 45 | /** Load the input scene.
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| 46 | @param filename file to load
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| 47 | @return true on success
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| 48 | */
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| 49 | virtual bool LoadScene(const string filename);
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| 50 |
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| 51 | /** Export all preprocessed data in a XML format understandable by the
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| 52 | PreprocessingInterface of the GtpVisibilityPreprocessor Module. The file can be compressed depending
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| 53 | on the environement settings.
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| 54 | @return true on successful export
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| 55 | */
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| 56 | virtual bool ExportPreprocessedData(const string filename);
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| 57 |
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| 58 | /** Build the KdTree of currently loaded occluders/occludees/viewcells. The construction
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| 59 | is driven by the environment settings, which also sais which of the three types of
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| 60 | entities should be used to drive the heuristical construction (only occluders by default)
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| 61 | */
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| 62 | virtual bool BuildKdTree();
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| 63 |
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| 64 | /** Compute visibility method. This method has to be reimplemented by the actual
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| 65 | Preprocessor implementation (e.g. SamplingPreprocessor, ExactPreprocessor,
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| 66 | GlobalSamplingpreprocessor)
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| 67 | */
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| 68 | virtual bool ComputeVisibility() = 0;
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| 69 |
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[439] | 70 | /** View cells are either loaded or prepared for generation, according to the chosen environment
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| 71 | object. Important evironment options are, e.g, the view cell type.
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| 72 | Should be done after scene loading (i.e., some options are based on scene type).
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| 73 | */
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| 74 | bool PrepareViewCells();
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[372] | 75 |
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| 76 | bool
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| 77 | Export( const string filename,
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| 78 | const bool scene,
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| 79 | const bool kdtree,
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| 80 | const bool bsptree
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| 81 | );
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| 82 |
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| 83 |
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| 84 | virtual void KdTreeStatistics(ostream &s);
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| 85 | virtual void BspTreeStatistics(ostream &s);
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| 86 |
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[490] | 87 | /** Loads samples from file.
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| 88 | @param samples returns the stored sample rays
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| 89 | @param objects needed to associate the objects ids
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| 90 | @returns true if samples were loaded successfully
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| 91 | */
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| 92 | bool LoadSamples(VssRayContainer &samples,
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| 93 | ObjectContainer &objects) const;
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| 94 |
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| 95 | /** Exports samples to file.
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| 96 | @returns true if samples were written successfully
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| 97 | */
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[508] | 98 | bool ExportSamples(const VssRayContainer &samples) const;
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| 99 |
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[372] | 100 | /// scene graph loaded from file
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| 101 | SceneGraph *mSceneGraph;
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[492] | 102 |
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| 103 | /// raw array of objects
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| 104 | ObjectContainer mObjects;
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[372] | 105 |
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| 106 | /// kD-tree organizing the scene graph (occluders + occludees) + viewcells
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| 107 | KdTree *mKdTree;
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| 108 |
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[445] | 109 | /// View space partition bsp tree
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| 110 | VspBspTree *mVspBspTree;
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[372] | 111 | /// list of all loaded occluders
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| 112 | ObjectContainer mOccluders;
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| 113 | /// list of all loaded occludees
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| 114 | ObjectContainer mOccludees;
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[439] | 115 |
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[372] | 116 | /// BSP tree representing the viewcells
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| 117 | BspTree *mBspTree;
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| 118 |
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[439] | 119 | ViewCellsManager *mViewCellsManager;
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[409] | 120 |
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[411] | 121 | /** Kd tree inducing a coarse partition of view space that are the building
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| 122 | blocks for view cells.
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| 123 | */
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| 124 | VspKdTree *mVspKdTree;
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[429] | 125 |
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[492] | 126 | bool mUseGlRenderer;
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| 127 |
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| 128 | protected:
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| 129 |
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| 130 | /////////////////////////
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| 131 |
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| 132 | /// samples used for construction of the BSP view cells tree.
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| 133 | int mBspConstructionSamples;
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| 134 | /// samples used for construction of the VSP KD tree.
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| 135 | int mVspKdConstructionSamples;
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[468] | 136 | /** Simulates rendering of the scene.
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| 137 | */
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| 138 | RenderSimulator *mRenderSimulator;
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[492] | 139 |
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[496] | 140 | GlRendererBuffer *renderer;
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| 141 |
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[492] | 142 | signals:
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| 143 | void EvalPvsStat();
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| 144 |
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[372] | 145 | };
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| 146 |
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| 147 |
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| 148 |
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[492] | 149 | extern Preprocessor *preprocessor;
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[372] | 150 |
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| 151 | #endif
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