[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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[2176] | 5 | //
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[372] | 6 | #include "Containers.h"
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| 7 | #include "Mesh.h"
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| 8 | #include "KdTree.h"
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[2105] | 9 | #include "SimpleRay.h"
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[372] | 10 |
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[2342] | 11 |
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[860] | 12 | namespace GtpVisibilityPreprocessor {
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[2342] | 13 |
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| 14 | class PreprocessorThread;
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[409] | 15 | class RenderSimulator;
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[372] | 16 | class SceneGraph;
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[429] | 17 | class Exporter;
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[439] | 18 | class ViewCellsManager;
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[445] | 19 | class BspTree;
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[1006] | 20 | class VspOspTree;
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[445] | 21 | class VspBspTree;
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[468] | 22 | class RenderSimulator;
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[490] | 23 | struct VssRayContainer;
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[1020] | 24 | class SamplingStrategy;
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[496] | 25 | class GlRendererBuffer;
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[1022] | 26 | class VspTree;
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[1279] | 27 | class HierarchyManager;
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[1264] | 28 | class BvHierarchy;
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[1221] | 29 | class Intersectable;
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[1287] | 30 | class VssRay;
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[1520] | 31 | class RayCaster;
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[1968] | 32 | class GlobalLinesRenderer;
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[2600] | 33 | class SceneGraphLeaf;
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[490] | 34 |
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[1520] | 35 |
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[372] | 36 | /** Namespace for the external visibility preprocessor
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| 37 |
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| 38 | This namespace includes all classes which are created by the VUT (Vienna University
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| 39 | of Technology) for the External Visibility Preprocessor of the GTP (GameTools Project)
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| 40 | (www.gametools.org).
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| 41 | */
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| 42 |
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[1145] | 43 | /** Main class of the visibility preprocessor. Responsible for loading and
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| 44 | saving of the input and output files. Initiates construction of the kD-tree,
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| 45 | viewcell loading/generation and the visibility computation itself.
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| 46 | */
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[1521] | 47 | class Preprocessor
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[1145] | 48 | {
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[1520] | 49 | friend class RayCaster;
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| 50 | friend class IntelRayCaster;
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| 51 | friend class InternalRayCaster;
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[2575] | 52 | friend class HavranRayCaster;
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[1564] | 53 |
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[372] | 54 | public:
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| 55 | /** Default constructor initialising e.g., KD tree and BSP tree.
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| 56 | */
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| 57 | Preprocessor();
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| 58 |
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[1520] | 59 | virtual ~Preprocessor();
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[1564] | 60 | /** Load the input scene.
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[2187] | 61 | @param filename file to load
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| 62 | @return true on success
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[1564] | 63 | */
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[2342] | 64 | virtual bool LoadScene(const string &filename);
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[1564] | 65 | /** Export all preprocessed data in a XML format understandable by the
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[2187] | 66 | PreprocessingInterface of the GtpVisibilityPreprocessor Module.
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| 67 | The file can be compressed depending on the environement settings.
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| 68 | @return true on successful export
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[1564] | 69 | */
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[2342] | 70 | virtual bool ExportPreprocessedData(const string &filename);
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[1564] | 71 | /** Build the KdTree of currently loaded occluders/occludees/viewcells. The construction
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[2187] | 72 | is driven by the environment settings, which also sais which of the three types of
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| 73 | entities should be used to drive the heuristical construction (only occluders by default)
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[1564] | 74 | */
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| 75 | virtual bool BuildKdTree();
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| 76 | /** Compute visibility method. This method has to be reimplemented by the actual
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[2187] | 77 | Preprocessor implementation (e.g. SamplingPreprocessor, ExactPreprocessor,
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| 78 | GlobalSamplingpreprocessor)
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[1564] | 79 | */
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| 80 | virtual bool ComputeVisibility() = 0;
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| 81 | /** Post Process the computed visibility. By default applys the visibility filter
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[2187] | 82 | (if specified in the environment and export the preprocessed data
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[2609] | 83 | */
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[1564] | 84 | virtual bool PostProcessVisibility();
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| 85 | /** View cells are either loaded or prepared for generation, according to the chosen environment
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[2187] | 86 | object. Important evironment options are, e.g, the view cell type.
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| 87 | Should be done after scene loading (i.e., some options are based on scene type).
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[1564] | 88 | */
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| 89 | bool PrepareViewCells();
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| 90 | /** Construct viewcells from the scratch
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| 91 | */
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| 92 | bool ConstructViewCells();
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| 93 | /** Returns the specified sample strategy, NULL if no valid strategy.
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| 94 | */
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[1884] | 95 | SamplingStrategy *GenerateSamplingStrategy(const int strategyId);
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[1564] | 96 | /** Export preprocessor data.
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| 97 | */
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[2342] | 98 | bool Export(const string &filename, const bool scene, const bool kdtree);
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[372] | 99 |
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[1564] | 100 | virtual void KdTreeStatistics(ostream &s);
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| 101 | virtual void BspTreeStatistics(ostream &s);
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[490] | 102 |
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[1564] | 103 | /** Loads samples from file.
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| 104 | @param samples returns the stored sample rays
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| 105 | @param objects needed to associate the objects ids
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| 106 | @returns true if samples were loaded successfully
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| 107 | */
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[2187] | 108 | bool LoadSamples(VssRayContainer &samples, ObjectContainer &objects) const;
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[508] | 109 |
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[1564] | 110 | /** Exports samples to file.
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[2187] | 111 | @returns true if samples were written successfully
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[1564] | 112 | */
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| 113 | bool ExportSamples(const VssRayContainer &samples) const;
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[1197] | 114 |
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[2342] | 115 | bool LoadKdTree(const string &filename);
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| 116 | bool ExportKdTree(const string &filename);
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[1381] | 117 |
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[1926] | 118 | virtual bool
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[2001] | 119 | ExportRays(const char *filename,
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| 120 | const VssRayContainer &vssRays,
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| 121 | const int number,
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| 122 | const bool exportScene = false
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| 123 | );
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[1926] | 124 |
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[2048] | 125 | bool ExportRayAnimation(const char *filename,
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| 126 | const vector<VssRayContainer> &vssRays);
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[2002] | 127 |
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[2048] | 128 | virtual int GenerateRays(const int number,
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| 129 | SamplingStrategy &strategy,
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| 130 | SimpleRayContainer &rays);
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[1786] | 131 |
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[1926] | 132 | virtual int GenerateRays(const int number,
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[2048] | 133 | const int raysType,
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| 134 | SimpleRayContainer &rays);
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[1786] | 135 |
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| 136 | bool GenerateRayBundle(SimpleRayContainer &rayBundle,
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[2048] | 137 | const SimpleRay &mainRay,
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| 138 | const int number,
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| 139 | const int shuffleType) const;
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[1786] | 140 |
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| 141 | virtual void CastRays(SimpleRayContainer &rays,
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[1932] | 142 | VssRayContainer &vssRays,
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| 143 | const bool castDoubleRays,
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[1996] | 144 | const bool pruneInvalidRays = true);
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[1786] | 145 |
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[2342] | 146 | virtual void
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| 147 | CastRaysWithHwGlobalLines(
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| 148 | SimpleRayContainer &rays,
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| 149 | VssRayContainer &vssRays,
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| 150 | const bool castDoubleRays,
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| 151 | const bool pruneInvalidRays
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| 152 | );
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[2076] | 153 |
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[2187] | 154 | /** Compute pixel error of the current PVS solution by sampling given number of viewpoints.
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[2048] | 155 | */
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[1958] | 156 | virtual void ComputeRenderError();
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[1931] | 157 |
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[1564] | 158 | /** Returns a view cells manager of the given name.
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| 159 | */
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| 160 | ViewCellsManager *CreateViewCellsManager(const char *name);
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[1221] | 161 |
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[1564] | 162 | GlRendererBuffer *GetRenderer();
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[492] | 163 |
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[2342] | 164 | bool InitRayCast(const string &externKdTree, const string &internKdTree);
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[409] | 165 |
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[2342] | 166 | bool LoadInternKdTree(const string &internKdTree);
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[2003] | 167 |
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[2342] | 168 | bool ExportObj(const string &filename, const ObjectContainer &objects);
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[429] | 169 |
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[1786] | 170 | Intersectable *GetParentObject(const int index) const;
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[1926] | 171 | Vector3 GetParentNormal(const int index) const;
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| 172 |
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[2593] | 173 | /** Sets a preprocessor thread.
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[1926] | 174 | */
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| 175 | void SetThread(PreprocessorThread *t);
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| 176 |
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[2593] | 177 | /** Returns a preprocessor thread.
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[1926] | 178 | */
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| 179 | PreprocessorThread *GetThread() const;
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| 180 |
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[1958] | 181 | Intersectable *GetObjectById(const int id);
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[1926] | 182 |
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[1968] | 183 | void PrepareHwGlobalLines();
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[2048] | 184 |
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| 185 | virtual void DeterminePvsObjects(VssRayContainer &rays);
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| 186 |
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[2115] | 187 | static bool LoadObjects(const string &filename,
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[2593] | 188 | ObjectContainer &pvsObjects,
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| 189 | const ObjectContainer &preprocessorObject);
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[2048] | 190 |
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[2609] | 191 | /** Adds dynamic geometry
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[2593] | 192 | */
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[2609] | 193 | bool LoadDynamicGeometry(const string &filename);
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[538] | 194 |
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[2609] | 195 | Mesh *Preprocessor::LoadBinaryObjIntoMesh(const string &filename);
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| 196 |
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| 197 |
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[2342] | 198 | /////////////////////////
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| 199 |
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[1564] | 200 | /// scene graph loaded from file
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| 201 | SceneGraph *mSceneGraph;
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[599] | 202 |
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[1564] | 203 | /// raw array of objects
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| 204 | ObjectContainer mObjects;
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[658] | 205 |
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[1564] | 206 | /// kD-tree organizing the scene graph (occluders + occludees) + viewcells
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| 207 | KdTree *mKdTree;
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[2609] | 208 | AxisAlignedBox3 sceneBox;
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| 209 |
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[1564] | 210 | /// View space partition bsp tree
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| 211 | VspBspTree *mVspBspTree;
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| 212 | /// BSP tree representing the viewcells
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| 213 | BspTree *mBspTree;
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[878] | 214 |
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[1564] | 215 | /// list of all loaded occluders
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| 216 | ObjectContainer mOccluders;
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| 217 | /// list of all loaded occludees
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| 218 | ObjectContainer mOccludees;
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[2609] | 219 | /// the view cells manager
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[1564] | 220 | ViewCellsManager *mViewCellsManager;
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| 221 |
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[2609] | 222 | //SceneGraphNodeContainer mDynamicObjects;
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| 223 | DynamicObjectsContainer mDynamicObjects;
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| 224 |
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[1564] | 225 | /// greedy optimized hierarchy for both objects and view cells
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| 226 | VspOspTree *mVspOspTree;
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| 227 |
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| 228 | bool mUseGlRenderer;
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| 229 | bool mUseGlDebugger;
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[2342] | 230 |
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[2187] | 231 | bool mUseHwGlobalLines;
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[1564] | 232 | bool mLoadViewCells;
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| 233 |
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| 234 | bool mDetectEmptyViewSpace;
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| 235 |
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| 236 | bool mQuitOnFinish;
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| 237 | bool mLoadMeshes;
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| 238 | bool mComputeVisibility;
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| 239 |
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| 240 | bool mExportVisibility;
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| 241 | string mVisibilityFileName;
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| 242 |
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| 243 | bool mApplyVisibilityFilter;
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| 244 | bool mApplyVisibilitySpatialFilter;
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| 245 |
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| 246 | float mVisibilityFilterWidth;
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| 247 |
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| 248 | int mPass;
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[2342] | 249 |
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[1723] | 250 | bool mStopComputation;
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[2342] | 251 |
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[1695] | 252 | bool mExportObj;
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| 253 |
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[1926] | 254 | bool mExportRays;
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[2008] | 255 | bool mExportAnimation;
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[1926] | 256 | int mExportNumRays;
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[1900] | 257 |
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[1786] | 258 | ofstream mStats;
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[1771] | 259 |
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[1926] | 260 | GlRendererBuffer *renderer;
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[2342] | 261 |
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[1966] | 262 | int mTotalSamples;
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[2580] | 263 | int mCurrentSamples;
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| 264 |
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[2046] | 265 | int mTotalTime;
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[1968] | 266 | int mSamplesPerPass;
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| 267 | int mSamplesPerEvaluation;
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[2580] | 268 |
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| 269 | int mTotalRaysCast;
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[1966] | 270 |
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[2342] | 271 | RayCaster *mRayCaster;
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[2076] | 272 |
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[2187] | 273 |
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[492] | 274 | protected:
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| 275 |
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[2183] | 276 | bool LoadBinaryObj(const std::string &filename,
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[2600] | 277 | SceneGraphLeaf *root,
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[2183] | 278 | std::vector<FaceParentInfo> *parents);
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[1658] | 279 |
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[2600] | 280 | bool ExportBinaryObj(const std::string &filename, SceneGraphLeaf *root);
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[1658] | 281 |
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[2575] | 282 | void SetupRay(Ray &ray, const Vector3 &point,
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| 283 | const Vector3 &direction) const;
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[1251] | 284 |
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[1520] | 285 | void EvalPvsStat();
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[492] | 286 |
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[1786] | 287 | virtual void EvalViewCellHistogram();
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[1771] | 288 |
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[2342] | 289 |
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[1520] | 290 | /////////////////////////
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| 291 |
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[2017] | 292 | GlobalLinesRenderer *mGlobalLinesRenderer;
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| 293 |
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| 294 | /// samples used for construction of the BSP view cells tree.
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[1564] | 295 | int mBspConstructionSamples;
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| 296 | /// samples used for construction of the VSP OSP tree.
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| 297 | int mVspOspConstructionSamples;
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[1786] | 298 | /// Simulates rendering of the scene.
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[1564] | 299 | RenderSimulator *mRenderSimulator;
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[1520] | 300 |
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[1564] | 301 | vector<FaceParentInfo> mFaceParents;
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[492] | 302 |
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[1723] | 303 | /// if box around view space should be used
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| 304 | bool mUseViewSpaceBox;
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[1867] | 305 |
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[1926] | 306 | PreprocessorThread *mThread;
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[372] | 307 | };
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| 308 |
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[2017] | 309 | extern Preprocessor *preprocessor;
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[372] | 310 |
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[860] | 311 | }
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| 312 |
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[372] | 313 | #endif
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