[440] | 1 | #ifndef _ViewCellsManager_H__
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| 2 | #define _ViewCellsManager_H__
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| 3 |
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| 4 | #include "Ray.h"
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| 5 | #include "VssRay.h"
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| 6 | #include "Containers.h"
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| 7 |
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| 8 | class ViewCell;
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| 9 | class Intersectable;
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| 10 | class RenderSimulator;
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| 11 | class Mesh;
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| 12 | struct Triangle3;
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| 13 | class SimulationStatistics;
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| 14 | class BspTree;
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| 15 | class KdTree;
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| 16 | class VspKdTree;
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| 17 | class VspBspTree;
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| 18 | class KdNode;
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| 19 | class KdLeaf;
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| 20 | class VspKdTree;
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| 21 | class AxisAlignedBox3;
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| 22 | /**
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| 23 | Manages different higher order operations on the view cells.
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| 24 | */
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| 25 | class ViewCellsManager
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| 26 | {
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| 27 |
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| 28 | public:
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| 29 |
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| 30 | /// view cell container types
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| 31 | enum {BSP, KD, VSP_KD, VSP_BSP};
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| 32 |
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| 33 | /** Constructor taking the maximal number of samples used for construction
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| 34 | */
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| 35 | ViewCellsManager(const int constructionSamples);
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| 36 |
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| 37 | ViewCellsManager();
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| 38 |
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| 39 | ~ViewCellsManager();
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| 40 |
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| 41 | /** Constructs view cell container with a given number of samples.
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| 42 | */
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| 43 | virtual int Construct(const ObjectContainer &objects,
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| 44 | const VssRayContainer &rays,
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| 45 | AxisAlignedBox3 *sceneBbox = NULL) = 0;
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| 46 |
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| 47 | /** Casts bundle of rays to the view cells and stores contributions in PVS.
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| 48 | */
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| 49 | int CastRays(const RayContainer &rays);
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| 50 |
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| 51 | /** Casts ray to the view cells and stores contributions in PVS.
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| 52 | */
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| 53 | virtual int CastRay(const Ray &ray) = 0;
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| 54 |
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| 55 | /** Post processes view cells givemŽa number of rays.
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| 56 | */
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| 57 | virtual int PostProcess(const ObjectContainer &objects,
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| 58 | const RayContainer &rays) = 0;
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| 59 |
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| 60 | /** Show visualization of the view cells.
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| 61 | */
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| 62 | virtual void Visualize(const ObjectContainer &objects,
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| 63 | const RayContainer &sampleRays) = 0;
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| 64 |
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| 65 | /** type of the view cell container.
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| 66 | */
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| 67 | virtual int GetType() const = 0;
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| 68 |
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| 69 | /** Simulates rendering with the given view cell partition.
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| 70 | @returns render time statistics
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| 71 | */
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| 72 | SimulationStatistics SimulateRendering() const;
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| 73 |
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| 74 | /** Load the input viewcells. The input viewcells should be given as a collection |
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| 75 | of meshes. Each mesh is assume to form a bounded polyhedron defining the interior of |
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| 76 | the viewcell. The method then builds a BSP tree of these view cells. |
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| 77 | |
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| 78 | @param filename file to load |
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| 79 | @return true on success |
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| 80 | */ |
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| 81 | bool LoadViewCells(const string filename);
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| 82 |
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| 83 | /** Constructs view cell from base triangle. The ViewCell is extruded along the normal vector.
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| 84 | @param the base triangle
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| 85 | @param the height of the newly created view cell
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| 86 | */
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| 87 | ViewCell *ExtrudeViewCell(const Triangle3 &baseTri, const float height) const;
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| 88 |
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| 89 | /** Merges two view cells.
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| 90 | @note the piercing rays of the front and back will be ordered
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| 91 | @returns new view cell based on the merging.
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| 92 | */
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| 93 | ViewCell *Merge(ViewCell &front, ViewCell &back) const;
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| 94 |
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| 95 | /** Generates view cell of type specified by this manager
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| 96 | */
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| 97 | virtual ViewCell *GenerateViewCell(Mesh *mesh = NULL) const;
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| 98 |
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| 99 | /** Adds a new view cell to the list of predefined view cells.
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| 100 | */
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| 101 | void AddViewCell(ViewCell *viewCell);
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| 102 |
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| 103 | /** Derive view cells from objects.
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| 104 | */
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| 105 | void DeriveViewCells(const ObjectContainer &objects,
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| 106 | ViewCellContainer &viewCells,
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| 107 | const int maxViewCells) const;
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| 108 |
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| 109 | /** Sets maximal number of samples used for the
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| 110 | construction of the view cells.
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| 111 | */
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| 112 | void SetVisualizationSamples(const int visSamples);
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| 113 |
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| 114 | /** Sets maximal number of samples used for the visualization of the view cells.
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| 115 | */
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| 116 | void SetConstructionSamples(const int constructionSamples);
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| 117 |
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| 118 | /** Sets maximal number of samples used for the post processing of the view cells.
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| 119 | */
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| 120 | void SetPostProcessSamples(const int postProcessingSamples);
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| 121 |
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| 122 | /** See set.
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| 123 | */
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| 124 | int GetVisualizationSamples() const;
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| 125 |
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| 126 | /** See set.
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| 127 | */
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| 128 | int GetConstructionSamples() const;
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| 129 |
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| 130 | /** See set.
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| 131 | */
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| 132 | int GetPostProcessSamples() const;
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| 133 |
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| 134 | /** Returns true if view cells wer already constructed.
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| 135 | */
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| 136 | virtual bool ViewCellsConstructed() const = 0;
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| 137 |
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| 138 | protected:
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| 139 | /** Adds sample constributions to the view cell PVS.
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| 140 | @returns number of sample contributions
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| 141 | */
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| 142 | virtual int AddSampleContributions(const Ray &ray,
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| 143 | Intersectable *sObject,
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| 144 | Intersectable *tObject) = 0;
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| 145 |
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| 146 | /** Initialises the render time simulator.
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| 147 | */
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| 148 | void InitRenderSimulator();
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| 149 | /////////////////////
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| 150 |
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| 151 |
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| 152 | /// the view cell corresponding to unbounded space
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| 153 | ViewCell *mUnbounded;
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| 154 |
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| 155 | /// Simulates rendering
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| 156 | RenderSimulator *mRenderSimulator;
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| 157 |
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| 158 | /// Loaded view cells
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| 159 | ViewCellContainer mViewCells;
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| 160 |
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| 161 | /// maximum number of samples taken for construction of the view cells
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| 162 | int mConstructionSamples;
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| 163 | int mPostProcessSamples;
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| 164 | int mVisualizationSamples;
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| 165 | };
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| 166 |
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| 167 | /**
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| 168 | Manages different higher order operations on the view cells.
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| 169 | */
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| 170 | class BspViewCellsManager: public ViewCellsManager
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| 171 | {
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| 172 |
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| 173 | public:
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| 174 |
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| 175 | BspViewCellsManager(BspTree *tree, int constructionSamples);
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| 176 |
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| 177 | int Construct(const ObjectContainer &objects,
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| 178 | const VssRayContainer &rays,
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| 179 | AxisAlignedBox3 *sceneBbox);
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| 180 |
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| 181 | int CastRay(const Ray &rays);
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| 182 |
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| 183 | int PostProcess(const ObjectContainer &objects,
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| 184 | const RayContainer &rays);
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| 185 |
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| 186 | void Visualize(const ObjectContainer &objects,
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| 187 | const RayContainer &sampleRays);
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| 188 |
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| 189 | int GetType() const;
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| 190 |
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| 191 | /** Generates view cell of type specified by this manager
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| 192 | */
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| 193 | ViewCell *GenerateViewCell(Mesh *mesh = NULL) const;
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| 194 |
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| 195 | bool ViewCellsConstructed() const;
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| 196 |
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| 197 | protected:
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| 198 |
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| 199 | int AddSampleContributions(const Ray &ray, Intersectable *sObject, Intersectable *tObject);
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| 200 |
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| 201 | /// the BSP tree.
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| 202 | BspTree *mBspTree;
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| 203 |
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| 204 |
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| 205 | private:
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| 206 |
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| 207 |
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| 208 | /** Exports visualization of the BSP splits.
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| 209 | */
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| 210 | void ExportSplits(const ObjectContainer &objects, const RayContainer &sampleRays);
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| 211 |
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| 212 | /** Exports visualization of the BSP PVS.
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| 213 | */
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| 214 | void ExportBspPvs(const ObjectContainer &objects, const RayContainer &sampleRays);
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| 215 |
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| 216 | };
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| 217 |
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| 218 | /**
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| 219 | Manages different higher order operations on the KD type view cells.
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| 220 | */
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| 221 | class KdViewCellsManager: public ViewCellsManager
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| 222 | {
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| 223 |
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| 224 | public:
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| 225 |
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| 226 | KdViewCellsManager(KdTree *tree);
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| 227 |
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| 228 | int Construct(const ObjectContainer &objects,
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| 229 | const VssRayContainer &rays,
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| 230 | AxisAlignedBox3 *sceneBbox);
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| 231 |
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| 232 | int CastRay(const Ray &ray);
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| 233 |
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| 234 | int PostProcess(const ObjectContainer &objects,
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| 235 | const RayContainer &rays);
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| 236 |
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| 237 | void Visualize(const ObjectContainer &objects,
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| 238 | const RayContainer &sampleRays);
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| 239 |
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| 240 | int GetType() const;
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| 241 |
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| 242 | bool ViewCellsConstructed() const;
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| 243 |
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| 244 |
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| 245 | protected:
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| 246 |
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| 247 | KdNode *GetNodeForPvs(KdLeaf *leaf);
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| 248 |
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| 249 | int AddSampleContributions(const Ray &ray, Intersectable *sObject, Intersectable *tObject);
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| 250 |
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| 251 | /// the BSP tree.
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| 252 | KdTree *mKdTree;
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| 253 |
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| 254 | /// depth of the KD tree nodes with represent the view cells
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| 255 | int mKdPvsDepth;
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| 256 | };
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| 257 |
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| 258 | /**
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| 259 | Manages different higher order operations on the view cells
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| 260 | for vsp kd tree view cells.
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| 261 | */
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| 262 | class VspKdViewCellsManager: public ViewCellsManager
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| 263 | {
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| 264 |
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| 265 | public:
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| 266 |
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| 267 | VspKdViewCellsManager(VspKdTree *vspKdTree, int constructionSamples);
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| 268 |
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| 269 | int Construct(const ObjectContainer &objects,
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| 270 | const VssRayContainer &rays,
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| 271 | AxisAlignedBox3 *sceneBbox);
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| 272 |
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| 273 | int CastRay(const Ray &rays);
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| 274 |
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| 275 | int PostProcess(const ObjectContainer &objects,
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| 276 | const RayContainer &rays);
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| 277 |
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| 278 | void Visualize(const ObjectContainer &objects,
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| 279 | const RayContainer &sampleRays);
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| 280 |
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| 281 | int GetType() const;
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| 282 |
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| 283 | bool ViewCellsConstructed() const;
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| 284 |
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| 285 |
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| 286 | protected:
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| 287 |
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| 288 | int AddSampleContributions(const Ray &ray, Intersectable *sObject, Intersectable *tObject);
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| 289 |
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| 290 | /// the BSP tree.
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| 291 | VspKdTree *mVspKdTree;
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| 292 | };
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| 293 |
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| 294 |
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| 295 | #endif
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