[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 |
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[860] | 11 | namespace GtpVisibilityPreprocessor {
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[1867] | 12 | class PreprocessorThread;
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| 13 |
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[409] | 14 | class RenderSimulator;
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[372] | 15 | class SceneGraph;
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[429] | 16 | class Exporter;
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[439] | 17 | class ViewCellsManager;
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[445] | 18 | class BspTree;
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[1006] | 19 | class VspOspTree;
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[445] | 20 | class VspBspTree;
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[468] | 21 | class RenderSimulator;
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[490] | 22 | struct VssRayContainer;
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[1020] | 23 | class SamplingStrategy;
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[496] | 24 | class GlRendererBuffer;
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[1022] | 25 | class VspTree;
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[1279] | 26 | class HierarchyManager;
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[1264] | 27 | class BvHierarchy;
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[1221] | 28 | class Intersectable;
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[1287] | 29 | class VssRay;
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[1520] | 30 | class RayCaster;
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[490] | 31 |
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[1520] | 32 |
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[372] | 33 | /** Namespace for the external visibility preprocessor
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| 34 |
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| 35 | This namespace includes all classes which are created by the VUT (Vienna University
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| 36 | of Technology) for the External Visibility Preprocessor of the GTP (GameTools Project)
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| 37 | (www.gametools.org).
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| 38 | */
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| 39 |
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[1145] | 40 | /** Main class of the visibility preprocessor. Responsible for loading and
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| 41 | saving of the input and output files. Initiates construction of the kD-tree,
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| 42 | viewcell loading/generation and the visibility computation itself.
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| 43 | */
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[1521] | 44 | class Preprocessor
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[1145] | 45 | {
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[1520] | 46 | friend class RayCaster;
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| 47 | friend class IntelRayCaster;
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| 48 | friend class InternalRayCaster;
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[1564] | 49 |
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[372] | 50 | public:
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| 51 | /** Default constructor initialising e.g., KD tree and BSP tree.
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| 52 | */
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| 53 | Preprocessor();
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| 54 |
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[1520] | 55 | virtual ~Preprocessor();
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[372] | 56 |
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[1564] | 57 | /** Load the input scene.
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| 58 | @param filename file to load
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| 59 | @return true on success
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| 60 | */
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| 61 | virtual bool LoadScene(const string filename);
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[372] | 62 |
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[1564] | 63 | /** Export all preprocessed data in a XML format understandable by the
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| 64 | PreprocessingInterface of the GtpVisibilityPreprocessor Module.
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| 65 | The file can be compressed depending on the environement settings.
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| 66 | @return true on successful export
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| 67 | */
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| 68 | virtual bool ExportPreprocessedData(const string filename);
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[871] | 69 |
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[1564] | 70 | /** Build the KdTree of currently loaded occluders/occludees/viewcells. The construction
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| 71 | is driven by the environment settings, which also sais which of the three types of
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| 72 | entities should be used to drive the heuristical construction (only occluders by default)
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| 73 | */
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| 74 | virtual bool BuildKdTree();
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[871] | 75 |
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[1564] | 76 | /** Compute visibility method. This method has to be reimplemented by the actual
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| 77 | Preprocessor implementation (e.g. SamplingPreprocessor, ExactPreprocessor,
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| 78 | GlobalSamplingpreprocessor)
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| 79 | */
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| 80 | virtual bool ComputeVisibility() = 0;
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[1292] | 81 |
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[1564] | 82 | /** Post Process the computed visibility. By default applys the visibility filter
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| 83 | (if specified in the environment and export the preprocessed data */
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| 84 | virtual bool PostProcessVisibility();
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[1292] | 85 |
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[1564] | 86 | /** View cells are either loaded or prepared for generation, according to the chosen environment
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| 87 | object. Important evironment options are, e.g, the view cell type.
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| 88 | Should be done after scene loading (i.e., some options are based on scene type).
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| 89 | */
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| 90 | bool PrepareViewCells();
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[1020] | 91 |
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[1564] | 92 | /** Construct viewcells from the scratch
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| 93 | */
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| 94 | bool ConstructViewCells();
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| 95 |
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| 96 | /** Returns the specified sample strategy, NULL if no valid strategy.
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| 97 | */
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[1884] | 98 | SamplingStrategy *GenerateSamplingStrategy(const int strategyId);
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[1564] | 99 |
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| 100 | /** Export preprocessor data.
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| 101 | */
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[1695] | 102 | bool Export(const string filename, const bool scene, const bool kdtree);
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[372] | 103 |
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[1564] | 104 | virtual void KdTreeStatistics(ostream &s);
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| 105 | virtual void BspTreeStatistics(ostream &s);
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[490] | 106 |
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[1564] | 107 | /** Loads samples from file.
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| 108 | @param samples returns the stored sample rays
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| 109 | @param objects needed to associate the objects ids
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| 110 | @returns true if samples were loaded successfully
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| 111 | */
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| 112 | bool LoadSamples(VssRayContainer &samples,
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[1695] | 113 | ObjectContainer &objects) const;
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[508] | 114 |
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[1564] | 115 | /** Exports samples to file.
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| 116 | @returns true if samples were written successfully
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| 117 | */
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| 118 | bool ExportSamples(const VssRayContainer &samples) const;
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[1197] | 119 |
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[1564] | 120 | bool LoadKdTree(const string filename);
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| 121 | bool ExportKdTree(const string filename);
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[1381] | 122 |
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[1900] | 123 | virtual bool
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| 124 | ExportRays(const char *filename,
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| 125 | const VssRayContainer &vssRays,
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| 126 | const int number
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| 127 | );
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| 128 |
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[1786] | 129 | virtual int
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[1867] | 130 | GenerateRays(const int number,
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| 131 | SamplingStrategy &strategy,
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| 132 | SimpleRayContainer &rays);
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[1786] | 133 |
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[1867] | 134 | virtual int GenerateRays(const int number,
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| 135 | const int raysType,
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| 136 | SimpleRayContainer &rays);
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[1786] | 137 |
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| 138 | bool GenerateRayBundle(SimpleRayContainer &rayBundle,
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| 139 | const SimpleRay &mainRay,
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| 140 | const int number,
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| 141 | const int shuffleType) const;
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| 142 |
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| 143 | virtual void CastRays(SimpleRayContainer &rays,
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[1867] | 144 | VssRayContainer &vssRays,
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| 145 | const bool castDoubleRays,
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| 146 | const bool pruneInvalidRays = true);
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[1786] | 147 |
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[1564] | 148 | /** Returns a view cells manager of the given name.
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| 149 | */
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| 150 | ViewCellsManager *CreateViewCellsManager(const char *name);
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[1221] | 151 |
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[1564] | 152 | GlRendererBuffer *GetRenderer();
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[492] | 153 |
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[1564] | 154 | bool InitRayCast(const string externKdTree, const string internKdTree);
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[409] | 155 |
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[1786] | 156 | bool ExportObj(const string filename, const ObjectContainer &objects);
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[429] | 157 |
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[1786] | 158 | Intersectable *GetParentObject(const int index) const;
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| 159 | Vector3 GetParentNormal(const int index) const;
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[1564] | 160 | ////////////////////////////////////////////////
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[538] | 161 |
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[1564] | 162 | /// scene graph loaded from file
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| 163 | SceneGraph *mSceneGraph;
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[599] | 164 |
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[1564] | 165 | /// raw array of objects
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| 166 | ObjectContainer mObjects;
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[658] | 167 |
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[1564] | 168 | /// kD-tree organizing the scene graph (occluders + occludees) + viewcells
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| 169 | KdTree *mKdTree;
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| 170 | /// View space partition bsp tree
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| 171 | VspBspTree *mVspBspTree;
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| 172 | /// BSP tree representing the viewcells
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| 173 | BspTree *mBspTree;
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[878] | 174 |
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[1564] | 175 | /// list of all loaded occluders
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| 176 | ObjectContainer mOccluders;
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| 177 | /// list of all loaded occludees
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| 178 | ObjectContainer mOccludees;
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[1221] | 179 |
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[1251] | 180 |
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[1564] | 181 | ViewCellsManager *mViewCellsManager;
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| 182 |
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| 183 | /// greedy optimized hierarchy for both objects and view cells
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| 184 | VspOspTree *mVspOspTree;
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| 185 |
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| 186 | bool mUseGlRenderer;
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| 187 | bool mUseGlDebugger;
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| 188 |
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| 189 | bool mLoadViewCells;
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| 190 |
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| 191 | bool mDetectEmptyViewSpace;
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| 192 |
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| 193 | bool mQuitOnFinish;
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| 194 | bool mLoadMeshes;
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| 195 | bool mComputeVisibility;
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| 196 |
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| 197 | bool mExportVisibility;
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| 198 | string mVisibilityFileName;
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| 199 |
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| 200 | bool mApplyVisibilityFilter;
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| 201 | bool mApplyVisibilitySpatialFilter;
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| 202 |
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| 203 | float mVisibilityFilterWidth;
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| 204 |
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| 205 | int mPass;
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[1723] | 206 |
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| 207 | bool mDelayVisibilityComputation;
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| 208 | bool mStopComputation;
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[1613] | 209 |
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[1695] | 210 | bool mExportObj;
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| 211 |
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[1900] | 212 | bool mExportRays;
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| 213 | int mExportNumRays;
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| 214 |
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[1786] | 215 | ofstream mStats;
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[1771] | 216 |
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[1785] | 217 | GlRendererBuffer *renderer;
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| 218 |
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[1867] | 219 | void SetThread(PreprocessorThread *t) {
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| 220 | mThread = t;
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| 221 | }
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| 222 |
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| 223 | PreprocessorThread *GetThread() const {
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| 224 | return mThread;
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| 225 | }
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| 226 |
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[492] | 227 | protected:
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| 228 |
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[1658] | 229 | bool LoadBinaryObj(const string filename,
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| 230 | SceneGraphNode *root,
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| 231 | vector<FaceParentInfo> *parents);
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| 232 |
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| 233 | bool ExportBinaryObj(const string filename, SceneGraphNode *root);
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| 234 |
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[1520] | 235 | void SetupRay(Ray &ray, const Vector3 &point, const Vector3 &direction) const;
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[1251] | 236 |
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[1520] | 237 | void EvalPvsStat();
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[492] | 238 |
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[1786] | 239 | virtual void EvalViewCellHistogram();
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[1771] | 240 |
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[1520] | 241 | /////////////////////////
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| 242 |
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[1564] | 243 | RayCaster *mRayCaster;
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| 244 | /// samples used for construction of the BSP view cells tree.
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| 245 | int mBspConstructionSamples;
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| 246 | /// samples used for construction of the VSP OSP tree.
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| 247 | int mVspOspConstructionSamples;
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[1786] | 248 | /// Simulates rendering of the scene.
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[1564] | 249 | RenderSimulator *mRenderSimulator;
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[1520] | 250 |
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[1564] | 251 | vector<FaceParentInfo> mFaceParents;
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[492] | 252 |
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[1564] | 253 |
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[1723] | 254 | /// if box around view space should be used
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| 255 | bool mUseViewSpaceBox;
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[1867] | 256 |
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| 257 | PreprocessorThread *mThread;
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[372] | 258 | };
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| 259 |
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[1867] | 260 | extern Preprocessor *preprocessor;
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[372] | 261 |
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[860] | 262 | }
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| 263 |
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[372] | 264 | #endif
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