[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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[475] | 7 | #include "ViewCell.h"
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[610] | 8 | #include "ViewCellBsp.h"
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[440] | 9 |
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[860] | 10 | namespace GtpVisibilityPreprocessor {
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| 11 |
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[440] | 12 | class ViewCell;
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| 13 | class Intersectable;
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| 14 | class RenderSimulator;
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[480] | 15 | class Renderer;
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[440] | 16 | class Mesh;
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| 17 | struct Triangle3;
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| 18 | class SimulationStatistics;
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| 19 | class BspTree;
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| 20 | class KdTree;
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[1006] | 21 | class VspOspTree;
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[440] | 22 | class VspBspTree;
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| 23 | class KdNode;
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| 24 | class KdLeaf;
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| 25 | class AxisAlignedBox3;
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[448] | 26 | class BspLeaf;
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[475] | 27 | class ViewCellsStatistics;
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[482] | 28 | class Exporter;
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[532] | 29 | class Beam;
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[570] | 30 | class Preprocessor;
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[580] | 31 | class ViewCellsTree;
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| 32 | class MergeCandidate;
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[931] | 33 | class BoundingBoxConverter;
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[503] | 34 |
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[1004] | 35 |
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[475] | 36 | struct BspRay;
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| 37 |
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[677] | 38 |
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| 39 | /** Probably Visible Set */
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[697] | 40 | class PrVs
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| 41 | {
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| 42 | public:
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[704] | 43 | /// root of view cells tree
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| 44 | ViewCell *mViewCell;
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| 45 |
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[880] | 46 | // input parameter is the render budget for the PrVs
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[677] | 47 | float mRenderBudget;
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| 48 |
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| 49 | /// some characteristic values could be here
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| 50 |
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| 51 | };
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| 52 |
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[850] | 53 |
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| 54 | /** Manages different higher order operations on the view cells.
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[440] | 55 | */
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| 56 | class ViewCellsManager
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| 57 | {
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| 58 | public:
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[728] | 59 | struct PvsStatistics
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| 60 | {
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| 61 | int minPvs;
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| 62 | int maxPvs;
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| 63 | float avgPvs;
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| 64 | int viewcells;
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[467] | 65 | };
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[697] | 66 |
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[728] | 67 | /// view cell container types
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| 68 | enum {BSP, KD, VSP_KD, VSP_BSP};
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[466] | 69 |
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[931] | 70 | /// render cost evaluation type
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[728] | 71 | enum {PER_OBJECT, PER_TRIANGLE};
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| 72 |
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[1004] | 73 | /** Default constructor.
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[440] | 74 | */
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[1004] | 75 | ViewCellsManager();
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[440] | 76 |
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[462] | 77 | virtual ~ViewCellsManager();
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[440] | 78 |
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[527] | 79 | /** Constructs view cells container taking a preprocessor
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[570] | 80 | @returns the output rays (if not null)
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| 81 | */
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| 82 | int Construct(Preprocessor *preprocessor, VssRayContainer *outRays = NULL);
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[527] | 83 |
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[440] | 84 | /** Constructs view cell container with a given number of samples.
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| 85 | */
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[574] | 86 | virtual int ConstructSubdivision(const ObjectContainer &objects,
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[487] | 87 | const VssRayContainer &rays) = 0;
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[440] | 88 |
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[441] | 89 | /** Computes sample contributions of the rays to the view cells PVS.
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| 90 |
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| 91 | @param rays bundle of rays used to find intersections with view cells and
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| 92 | adding the contribution
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[563] | 93 | @param addRays true if rays should be added to the PVSs of the viewcells they
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[574] | 94 | intersect
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| 95 | @param storeViewCells true if view cells should be stored in the ray
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| 96 | */
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[697] | 97 | float ComputeSampleContributions(const VssRayContainer &rays,
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[574] | 98 | const bool addContributions,
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| 99 | const bool storeViewCells);
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[440] | 100 |
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[697] | 101 | /** Add sample contributions to the viewcells they intersect */
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| 102 | void AddSampleContributions(const VssRayContainer &rays);
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[563] | 103 |
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[441] | 104 |
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[475] | 105 | /** Computes sample contribution of a simgle ray to the view cells PVS.
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| 106 | @param ray finds intersections with view cells and holds the contribution
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| 107 | @param castRay true if ray should be cast to gain the information, false if ray
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| 108 | is already holding the information and need not be recast.
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[466] | 109 |
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[475] | 110 | @returns number of sample contributions
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| 111 | */
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[591] | 112 | virtual float ComputeSampleContributions(VssRay &ray,
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| 113 | const bool addRays,
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| 114 | const bool storeViewCells);
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[563] | 115 |
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[591] | 116 | virtual void AddSampleContributions(VssRay &ray);
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[563] | 117 |
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[452] | 118 | /** Prints out statistics of the view cells.
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| 119 | */
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[475] | 120 | virtual void PrintStatistics(ostream &s) const;
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[452] | 121 |
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[440] | 122 | /** Post processes view cells givemŽa number of rays.
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| 123 | */
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[475] | 124 | virtual int PostProcess(const ObjectContainer &objects,
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| 125 | const VssRayContainer &rays) = 0;
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[440] | 126 |
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| 127 | /** Show visualization of the view cells.
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| 128 | */
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| 129 | virtual void Visualize(const ObjectContainer &objects,
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[466] | 130 | const VssRayContainer &sampleRays) = 0;
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[440] | 131 |
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| 132 | /** type of the view cell container.
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| 133 | */
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| 134 | virtual int GetType() const = 0;
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| 135 |
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[463] | 136 | /** Load the input viewcells. The input viewcells should be given as a collection
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| 137 | of meshes. Each mesh is assume to form a bounded polyhedron defining the interior of
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| 138 | the viewcell. The method then builds a BSP tree of these view cells.
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| 139 |
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| 140 | @param filename file to load
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| 141 | @return true on success
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| 142 | */
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[577] | 143 | virtual bool LoadViewCellsGeometry(const string filename);
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[440] | 144 |
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[577] | 145 |
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[440] | 146 | /** Constructs view cell from base triangle. The ViewCell is extruded along the normal vector.
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| 147 | @param the base triangle
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| 148 | @param the height of the newly created view cell
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| 149 | */
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| 150 | ViewCell *ExtrudeViewCell(const Triangle3 &baseTri, const float height) const;
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| 151 |
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| 152 | /** Merges two view cells.
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| 153 | @note the piercing rays of the front and back will be ordered
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| 154 | @returns new view cell based on the merging.
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| 155 | */
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[582] | 156 | ViewCellInterior *MergeViewCells(ViewCell *front, ViewCell *back) const;
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| 157 |
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| 158 | /** Merges a container of view cells.
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| 159 | @returns new view cell based on the merging.
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| 160 | */
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| 161 | ViewCellInterior *MergeViewCells(ViewCellContainer &children) const;
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[440] | 162 |
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| 163 | /** Generates view cell of type specified by this manager
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| 164 | */
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[580] | 165 | virtual ViewCell *GenerateViewCell(Mesh *mesh = NULL) const = 0;
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[440] | 166 |
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| 167 | /** Adds a new view cell to the list of predefined view cells.
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| 168 | */
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| 169 | void AddViewCell(ViewCell *viewCell);
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| 170 |
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[1002] | 171 | /** Derive view cells from scene objects. The view ells are created by taking the object
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[1001] | 172 | geometry into account.
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[440] | 173 | */
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[1002] | 174 | void DeriveViewCellsFromObjects(const ObjectContainer &objects,
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| 175 | ViewCellContainer &viewCells,
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| 176 | const int maxViewCells) const;
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[440] | 177 |
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| 178 | /** Sets maximal number of samples used for the
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| 179 | construction of the view cells.
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| 180 | */
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| 181 | void SetVisualizationSamples(const int visSamples);
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| 182 |
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[574] | 183 | /** Sets maximal number of samples used for the construction of the view cells.
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[440] | 184 | */
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| 185 | void SetConstructionSamples(const int constructionSamples);
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| 186 |
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[574] | 187 | /** Sets maximal number of samples used for the visualization of the view cells.
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| 188 | */
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| 189 | void SetInitialSamples(const int initialSamples);
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| 190 |
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[440] | 191 | /** Sets maximal number of samples used for the post processing of the view cells.
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| 192 | */
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| 193 | void SetPostProcessSamples(const int postProcessingSamples);
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| 194 |
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| 195 | /** See set.
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| 196 | */
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| 197 | int GetVisualizationSamples() const;
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| 198 |
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| 199 | /** See set.
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| 200 | */
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| 201 | int GetConstructionSamples() const;
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| 202 |
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| 203 | /** See set.
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| 204 | */
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| 205 | int GetPostProcessSamples() const;
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| 206 |
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[1002] | 207 | /** Returns true if view cells are already constructed.
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[440] | 208 | */
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| 209 | virtual bool ViewCellsConstructed() const = 0;
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[441] | 210 |
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[477] | 211 | /** cast line segment to get a list of unique viewcells which are intersected
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| 212 | by this line segment
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| 213 | */
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[466] | 214 |
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[477] | 215 | virtual int CastLineSegment(const Vector3 &origin,
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[466] | 216 | const Vector3 &termination,
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| 217 | ViewCellContainer &viewcells
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| 218 | ) = 0;
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| 219 |
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[477] | 220 | virtual void GetPvsStatistics(PvsStatistics &stat);
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[466] | 221 |
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[904] | 222 | virtual void GetPrVS(const Vector3 &viewPoint, PrVs &prvs, const float filterWidth);
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[677] | 223 |
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[697] | 224 | /** Get a viewcell containing the specified point
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[879] | 225 | @param active if the active or elementary view cell should be returned.
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[697] | 226 | */
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[879] | 227 | virtual ViewCell *GetViewCell(const Vector3 &point, const bool active = false) const = 0;
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[492] | 228 |
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[503] | 229 | virtual void PrintPvsStatistics(ostream &s);
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[467] | 230 |
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[719] | 231 | /** Updates pvs of the view cell hierarchy if necessary.
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| 232 | */
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| 233 | void UpdatePvs();
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| 234 |
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[477] | 235 | /** Returns probability that view point lies in one view cell.
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| 236 | */
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| 237 | virtual float GetProbability(ViewCell *viewCell) = 0;
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[468] | 238 |
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[477] | 239 | /** Returns render cost of a single view cell given the render cost of an object.
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| 240 | */
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[728] | 241 | float GetRendercost(ViewCell *viewCell) const;
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[468] | 242 |
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[720] | 243 | /** Returns reference to container of loaded / generated view cells.
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[477] | 244 | */
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| 245 | ViewCellContainer &GetViewCells();
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[468] | 246 |
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[485] | 247 | /** Helper function used to split ray sets uniformly
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| 248 | into one that is currently used and the other that
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| 249 | is saved for later processing.
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| 250 | @param sourceRays the input ray set
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| 251 | @param maxSize the maximal number of rays that will be used
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| 252 | @param usedRays returns the used ray set
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| 253 | @param savedRays if not null, returns the saved ray set
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[477] | 254 | */
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| 255 | void GetRaySets(const VssRayContainer &sourceRays,
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[485] | 256 | const int maxSize,
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| 257 | VssRayContainer &usedRays,
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| 258 | VssRayContainer *savedRays = NULL) const;
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| 259 |
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[480] | 260 | /** Returns accumulated area of all view cells.
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| 261 | */
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| 262 | float GetAccVcArea();
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[470] | 263 |
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[480] | 264 | /** Returns area of one view cell.
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| 265 | */
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| 266 | virtual float GetArea(ViewCell *viewCell) const;
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[470] | 267 |
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[551] | 268 | /** Returns volume of view cell.
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[480] | 269 | */
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| 270 | virtual float GetVolume(ViewCell *viewCell) const;
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[470] | 271 |
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[480] | 272 | /** Sets the current renderer mainly for view cells statistics.
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| 273 | */
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| 274 | void SetRenderer(Renderer *renderer);
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| 275 |
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[487] | 276 | /** Computes a (random) view point in the valid view space.
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| 277 | @returns true if valid view point was found
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| 278 | */
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| 279 | virtual bool GetViewPoint(Vector3 &viewPoint) const;
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| 280 |
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[490] | 281 | /** Returns true if this view point is in the valid view space.
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| 282 | */
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| 283 | virtual bool ViewPointValid(const Vector3 &viewPoint) const;
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| 284 |
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[487] | 285 | /** Sets a view space boundary.
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| 286 | */
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| 287 | void SetViewSpaceBox(const AxisAlignedBox3 &box);
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| 288 |
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[519] | 289 | AxisAlignedBox3 GetViewSpaceBox() const;
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| 290 |
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[503] | 291 | /** Creates mesh for this view cell.
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| 292 | */
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| 293 | virtual void CreateMesh(ViewCell *vc) = NULL;
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[487] | 294 |
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[508] | 295 | /** Writes view cells to disc.
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| 296 | */
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[931] | 297 | virtual bool ExportViewCells(const string filename, const bool exportPvs, const ObjectContainer &objects);
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[508] | 298 |
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[532] | 299 | /** Casts beam to collect view cells.
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| 300 | */
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| 301 | virtual int CastBeam(Beam &beam);
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| 302 |
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[547] | 303 | /** Checks if view cell is considered as valid.
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| 304 | */
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[561] | 305 | virtual bool CheckValidity(ViewCell *vc,
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[562] | 306 | int minPvsSize,
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| 307 | int maxPvsSize) const;
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[547] | 308 |
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[562] | 309 |
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| 310 | /** Sets validity of view cell
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| 311 | */
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| 312 | virtual void SetValidity(ViewCell *vc,
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| 313 | int minPvsSize,
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| 314 | int maxPvsSize) const;
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| 315 |
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[710] | 316 | /** sets validy of all viewcells
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| 317 | */
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[810] | 318 | virtual void SetValidity(int minPvsSize,
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[569] | 319 | int maxPvsSize) const;
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| 320 |
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[609] | 321 |
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| 322 | /** set valid viewcells in the range of pvs. sorts the viewcells
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[710] | 323 | according to the pvs and then pickups those in the ranges
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| 324 | */
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| 325 | void SetValidityPercentage(const float minValid, const float maxValid);
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[569] | 326 |
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[609] | 327 | int CountValidViewcells() const;
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| 328 |
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[547] | 329 | /** Returns maximal allowed pvs size.
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| 330 | */
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| 331 | int GetMaxPvsSize() const;
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| 332 |
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[562] | 333 | /** Returns maximal allowed pvs size.
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| 334 | */
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| 335 | int GetMinPvsSize() const;
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| 336 |
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[561] | 337 | /** Returns maximal ratio. i.e., currentPVs / maxPvs,
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| 338 | where pvs is still considered valid.
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| 339 | */
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| 340 | float GetMaxPvsRatio() const;
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| 341 |
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[547] | 342 | /** Exports view cell geometry.
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| 343 | */
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[591] | 344 | virtual void ExportViewCellGeometry(Exporter *exporter,
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| 345 | ViewCell *vc,
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[660] | 346 | const Plane3 *clipPlane = NULL) const = 0;
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[547] | 347 |
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[860] | 348 | /** Brings the view cells into their final state, computes meshes and volume.
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| 349 | */
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[551] | 350 | virtual void FinalizeViewCells(const bool createMesh);
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| 351 |
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[579] | 352 | /** Evaluates statistics values on view cells.
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| 353 | */
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[580] | 354 | void EvaluateRenderStatistics(float &totalRenderCost,
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| 355 | float &expectedRenderCost,
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| 356 | float &deviation,
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| 357 | float &variance,
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| 358 | int &totalPvs,
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| 359 | float &avgRenderCost);
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[579] | 360 |
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[580] | 361 |
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| 362 | /** Returns hierarchy of the view cells.
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| 363 | */
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| 364 | ViewCellsTree *GetViewCellsTree();
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| 365 |
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[581] | 366 | virtual void CollectMergeCandidates(const VssRayContainer &rays,
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| 367 | vector<MergeCandidate> &candidates) = 0;
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[580] | 368 |
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[610] | 369 | void CollectViewCells(const int n);
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| 370 |
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[660] | 371 | /** Returns true if this (logical) view cell is equal to a spatial node.
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| 372 | */
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[710] | 373 | virtual bool EqualToSpatialNode(ViewCell *viewCell) const;
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[580] | 374 |
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[660] | 375 | /** Sets current view cells set to active, i.e., the sampling is done in this view cell set.
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| 376 | */
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| 377 | void SetViewCellsActive();
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[599] | 378 |
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[660] | 379 | /** Evaluates worth of current view cell hierarchy.
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| 380 | */
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[664] | 381 | void EvalViewCellPartition(Preprocessor *preprocessor);
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[660] | 382 |
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[728] | 383 | /** Sets maximal size of a view cell filter.
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| 384 | */
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| 385 | void SetMaxFilterSize(const int size);
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[697] | 386 |
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[840] | 387 | /** Returns maximal filter size.
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| 388 | */
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| 389 | int GetMaxFilterSize() const;
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[746] | 390 |
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[840] | 391 | /** Deletes interior nodes from the tree which have negative merge cost set (local merge).
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| 392 | */
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| 393 | void DeleteLocalMergeTree(ViewCell *vc) const;
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[713] | 394 |
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[728] | 395 | /** Evaluautes histogram for a given number of view cells.
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| 396 | */
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| 397 | void EvalViewCellHistogram(const string filename, const int nViewCells);
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| 398 |
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[735] | 399 | /** Evaluautes histogram for a given number of view cells.
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| 400 | */
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| 401 | void EvalViewCellHistogramForPvsSize(const string filename, const int nViewCells);
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| 402 |
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[728] | 403 | /** Evaluates the render cost of a view cell.
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| 404 | */
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| 405 | float EvalRenderCost(Intersectable *obj) const;
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[1002] | 406 |
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| 407 | /** Sets pvs size of view cell as a scalar. Used when storing pvs only in the leaves
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| 408 | of the hierarchy.
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| 409 | */
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[1004] | 410 | void SetScalarPvsSize(ViewCell *vc, const int pvsSize) const;
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[728] | 411 |
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[1002] | 412 |
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[870] | 413 | /** Returns bounding box of a view cell.
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| 414 | */
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| 415 | AxisAlignedBox3 GetViewCellBox(ViewCell *vc);
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[859] | 416 |
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[840] | 417 | /** Exports bounding boxes of objects to file.
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| 418 | */
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| 419 | bool ExportBoundingBoxes(const string filename, const ObjectContainer &objects) const;
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[931] | 420 |
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[850] | 421 | /** Load the bounding boxes into the container.
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| 422 | */
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| 423 | bool LoadBoundingBoxes(const string filename, IndexedBoundingBoxContainer &boxes) const;
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[840] | 424 |
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[1002] | 425 | /** Returns true if pvs should be exported together with the view cells.
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| 426 | */
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| 427 | bool GetExportPvs() const;
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[870] | 428 |
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| 429 | /** Loads view cells from file. The view cells manager is created with
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| 430 | respect to the loaded view cells.
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| 431 |
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[1002] | 432 | @param filename the filename of the view cells
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| 433 | @param objects the scene objects
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| 434 | @param finalizeViewCells if the view cells should be post processed, i.e.
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| 435 | a mesh is created representing the geometry
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| 436 | @param bconverter a conversion routine working with the similarities of bounding
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| 437 | boxes: if there is a certain similarity of overlap between bounding boxes, two tested
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| 438 | candidate objects are considered to be the same objects
|
---|
[870] | 439 | @returns the view cells manager if loading was successful, false otherwise
|
---|
| 440 | */
|
---|
[938] | 441 | static ViewCellsManager *LoadViewCells(const string &filename,
|
---|
[931] | 442 | ObjectContainer *objects,
|
---|
[944] | 443 | const bool finalizeViewCells,
|
---|
[931] | 444 | BoundingBoxConverter *bconverter = NULL);
|
---|
[870] | 445 |
|
---|
[904] | 446 |
|
---|
[931] | 447 | ////////////////////////////////////////////////////////7
|
---|
| 448 | // visiblity filter options
|
---|
| 449 | // TODO: write own visibiltiy filter class
|
---|
| 450 | void ApplyFilter(KdTree *kdTree,
|
---|
| 451 | const float viewSpaceFilterSize,
|
---|
| 452 | const float spatialFilterSize);
|
---|
[904] | 453 |
|
---|
[931] | 454 | void ApplySpatialFilter(KdTree *kdTree,
|
---|
| 455 | const float spatialFilterSize,
|
---|
| 456 | ObjectPvs &pvs);
|
---|
[480] | 457 |
|
---|
[931] | 458 | void ApplyFilter(ViewCell *viewCell,
|
---|
| 459 | KdTree *kdTree,
|
---|
| 460 | const float viewSpaceFilterSize,
|
---|
| 461 | const float spatialFilterSize,
|
---|
| 462 | ObjectPvs &pvs);
|
---|
| 463 |
|
---|
| 464 | float GetFilterWidth();
|
---|
| 465 |
|
---|
| 466 | float GetAbsFilterWidth();
|
---|
| 467 |
|
---|
| 468 |
|
---|
[697] | 469 | /** Returns the bounding box of filter width.
|
---|
| 470 | */
|
---|
| 471 | AxisAlignedBox3 GetFilterBBox(const Vector3 &viewPoint, const float width) const;
|
---|
[609] | 472 |
|
---|
[979] | 473 |
|
---|
[931] | 474 | protected:
|
---|
| 475 | /** Exports bounding boxes as xml stream
|
---|
| 476 | */
|
---|
[955] | 477 | //bool ExportBoundingBoxes(ofstream &xmlstream, const ObjectContainer &objects) const;
|
---|
[931] | 478 |
|
---|
[697] | 479 | /** Intersects box with the tree and returns the number of intersected boxes.
|
---|
| 480 | @returns number of view cells found
|
---|
| 481 | */
|
---|
[710] | 482 | virtual int ComputeBoxIntersections(const AxisAlignedBox3 &box,
|
---|
| 483 | ViewCellContainer &viewCells) const;
|
---|
[697] | 484 |
|
---|
[880] | 485 | /** Tests the visibility filter functionality.
|
---|
| 486 | */
|
---|
[697] | 487 | virtual void TestFilter(const ObjectContainer &objects) {};
|
---|
| 488 |
|
---|
[931] | 489 | /** If the view cells tree was already constructed or not.
|
---|
[581] | 490 | */
|
---|
| 491 | bool ViewCellsTreeConstructed() const;
|
---|
| 492 |
|
---|
[574] | 493 | int CastPassSamples(const int samplesPerPass,
|
---|
| 494 | const int sampleType,
|
---|
| 495 | VssRayContainer &vssRays) const;
|
---|
[573] | 496 |
|
---|
[931] | 497 | /** Parse the options from the environment file.
|
---|
| 498 | */
|
---|
[482] | 499 | void ParseEnvironment();
|
---|
| 500 |
|
---|
[508] | 501 | /** Creates unique view cell ids.
|
---|
| 502 | */
|
---|
| 503 | void CreateUniqueViewCellIds();
|
---|
[547] | 504 |
|
---|
[551] | 505 | /** Finalizes, i.e., creates mesh, volume, area etc. for the view cell.
|
---|
| 506 | */
|
---|
| 507 | virtual void Finalize(ViewCell *viewCell, const bool createMesh);
|
---|
| 508 |
|
---|
[480] | 509 | /** Recollects view cells and resets statistics.
|
---|
| 510 | */
|
---|
| 511 | void ResetViewCells();
|
---|
[482] | 512 |
|
---|
[480] | 513 | /** Collects the view cells in the view cell container.
|
---|
| 514 | */
|
---|
| 515 | virtual void CollectViewCells() = 0;
|
---|
[482] | 516 |
|
---|
[479] | 517 | /** Evaluates view cells statistics and stores it in
|
---|
| 518 | mViewCellsStatistics.
|
---|
| 519 | */
|
---|
| 520 | void EvaluateViewCellsStats();
|
---|
[482] | 521 |
|
---|
| 522 | //-- helper functions for view cell visualization
|
---|
| 523 |
|
---|
| 524 | /** Exports the view cell partition.
|
---|
| 525 | */
|
---|
[508] | 526 | void ExportViewCellsForViz(Exporter *exporter) const;
|
---|
[482] | 527 |
|
---|
| 528 | /** Sets exporter color.
|
---|
| 529 | */
|
---|
| 530 | virtual void ExportColor(Exporter *exporter, ViewCell *vc) const = 0;
|
---|
| 531 |
|
---|
[1002] | 532 | /** Returns volume of the view space.
|
---|
| 533 | */
|
---|
[557] | 534 | virtual float GetViewSpaceVolume();
|
---|
| 535 |
|
---|
[503] | 536 | /** Creates meshes from the view cells.
|
---|
| 537 | */
|
---|
[517] | 538 | void CreateViewCellMeshes();
|
---|
[503] | 539 |
|
---|
[610] | 540 | /** Takes different measures to prepares the view cells after loading them from disc.
|
---|
[577] | 541 | */
|
---|
| 542 | virtual void PrepareLoadedViewCells() {};
|
---|
| 543 |
|
---|
[704] | 544 | /** Constructs local view cell merge hierarchy.
|
---|
| 545 | */
|
---|
| 546 | ViewCell *ConstructLocalMergeTree(ViewCell *currentViewCell,
|
---|
| 547 | const ViewCellContainer &viewCells);
|
---|
| 548 |
|
---|
[713] | 549 | /** Constructs local view cell merge hierarchy based solely on similarity with the
|
---|
| 550 | current viewcell
|
---|
| 551 | */
|
---|
| 552 | ViewCell *ConstructLocalMergeTree2(ViewCell *currentViewCell,
|
---|
| 553 | const ViewCellContainer &viewCells);
|
---|
| 554 |
|
---|
| 555 |
|
---|
[660] | 556 | /** Creates clip plane for visualization.
|
---|
| 557 | */
|
---|
| 558 | void CreateClipPlane();
|
---|
[591] | 559 |
|
---|
[860] | 560 | /** Updates pvs of all view cells for statistical evaluation after some more sampling
|
---|
| 561 | */
|
---|
[752] | 562 | virtual void UpdatePvsForEvaluation(ViewCell *root, ObjectPvs &pvs) = 0;
|
---|
| 563 |
|
---|
[1002] | 564 |
|
---|
[979] | 565 | ////////////////////////////////////////////////
|
---|
[752] | 566 |
|
---|
[840] | 567 | /// if bounding boxes should also be exported
|
---|
| 568 | bool mExportBboxesForPvs;
|
---|
| 569 |
|
---|
[1004] | 570 | //Environment *environment;
|
---|
[660] | 571 | Plane3 mClipPlane;
|
---|
[837] | 572 |
|
---|
[660] | 573 | bool mUseClipPlaneForViz;
|
---|
[591] | 574 |
|
---|
| 575 |
|
---|
[480] | 576 | /// Renders the view cells.
|
---|
| 577 | Renderer *mRenderer;
|
---|
[440] | 578 |
|
---|
| 579 | /// Loaded view cells
|
---|
[469] | 580 | ViewCellContainer mViewCells;
|
---|
[1002] | 581 | /// the corresponding view cell tree holding the logical description of view cells
|
---|
[580] | 582 | ViewCellsTree *mViewCellsTree;
|
---|
[1002] | 583 | /// if empty view cells should be pruned (i.e., invalidated) from this point on
|
---|
[710] | 584 | bool mPruneEmptyViewCells;
|
---|
[706] | 585 |
|
---|
[1002] | 586 | /// if the pvss in the view cell leaves and the interiors are up to date
|
---|
[719] | 587 | bool mViewCellPvsIsUpdated;
|
---|
[1002] | 588 |
|
---|
[440] | 589 | /// maximum number of samples taken for construction of the view cells
|
---|
| 590 | int mConstructionSamples;
|
---|
[574] | 591 | int mSamplesPerPass;
|
---|
| 592 | int mInitialSamples;
|
---|
[440] | 593 | int mPostProcessSamples;
|
---|
| 594 | int mVisualizationSamples;
|
---|
[441] | 595 |
|
---|
[470] | 596 | float mTotalAreaValid;
|
---|
| 597 | float mTotalArea;
|
---|
[475] | 598 |
|
---|
[547] | 599 | int mMaxPvsSize;
|
---|
[562] | 600 | int mMinPvsSize;
|
---|
[547] | 601 | float mMaxPvsRatio;
|
---|
| 602 |
|
---|
[660] | 603 | int mSamplingType;
|
---|
[722] | 604 | int mEvaluationSamplingType;
|
---|
[600] | 605 | int mNumActiveViewCells;
|
---|
[586] | 606 | bool mCompressViewCells;
|
---|
| 607 |
|
---|
[1002] | 608 | /// holds the current view cell statistics
|
---|
[660] | 609 | ViewCellsStatistics mCurrentViewCellsStats;
|
---|
[487] | 610 | /// the scene bounding box
|
---|
[542] | 611 | AxisAlignedBox3 mViewSpaceBox;
|
---|
[1001] | 612 |
|
---|
[508] | 613 | /// if view cells should be exported
|
---|
| 614 | bool mExportViewCells;
|
---|
[547] | 615 |
|
---|
[1002] | 616 | // if only valid view cells should be considered for processing
|
---|
[564] | 617 | bool mOnlyValidViewCells;
|
---|
[547] | 618 |
|
---|
[580] | 619 | /// if rays should be used to collect merge candidates
|
---|
| 620 | bool mUseRaysForMerge;
|
---|
[1002] | 621 | /// if there should be an additional merge step after the subdivision
|
---|
[592] | 622 | bool mMergeViewCells;
|
---|
[697] | 623 |
|
---|
| 624 | /// the width of the box filter
|
---|
| 625 | float mFilterWidth;
|
---|
| 626 | int mMaxFilterSize;
|
---|
| 627 |
|
---|
[487] | 628 | //-- visualization options
|
---|
| 629 |
|
---|
[1002] | 630 | /// color code for view cells visualization
|
---|
[487] | 631 | int mColorCode;
|
---|
| 632 | bool mExportGeometry;
|
---|
| 633 | bool mExportRays;
|
---|
[517] | 634 |
|
---|
| 635 | bool mViewCellsFinished;
|
---|
[664] | 636 |
|
---|
| 637 | bool mEvaluateViewCells;
|
---|
[666] | 638 |
|
---|
[693] | 639 | bool mShowVisualization;
|
---|
| 640 |
|
---|
| 641 | // HACK in order to detect empty view cells
|
---|
| 642 | void CollectEmptyViewCells();
|
---|
[694] | 643 | void TestEmptyViewCells(const ObjectContainer &obj);
|
---|
[693] | 644 |
|
---|
| 645 | ViewCellContainer mEmptyViewCells;
|
---|
[728] | 646 |
|
---|
| 647 | int mRenderCostEvaluationType;
|
---|
[844] | 648 |
|
---|
| 649 | /// if pvs should be exported with view cells
|
---|
| 650 | bool mExportPvs;
|
---|
[440] | 651 | };
|
---|
| 652 |
|
---|
[441] | 653 |
|
---|
[440] | 654 | /**
|
---|
| 655 | Manages different higher order operations on the view cells.
|
---|
| 656 | */
|
---|
| 657 | class BspViewCellsManager: public ViewCellsManager
|
---|
| 658 | {
|
---|
| 659 |
|
---|
| 660 | public:
|
---|
[485] | 661 | /** Constructor taking the bsp tree and the number of samples
|
---|
| 662 | used to construct the bsp tree.
|
---|
| 663 | */
|
---|
[1004] | 664 | BspViewCellsManager(BspTree *tree);
|
---|
[440] | 665 |
|
---|
[477] | 666 | ~BspViewCellsManager();
|
---|
| 667 |
|
---|
[574] | 668 | int ConstructSubdivision(const ObjectContainer &objects,
|
---|
[487] | 669 | const VssRayContainer &rays);
|
---|
[440] | 670 |
|
---|
| 671 | int PostProcess(const ObjectContainer &objects,
|
---|
[466] | 672 | const VssRayContainer &rays);
|
---|
[440] | 673 |
|
---|
| 674 | void Visualize(const ObjectContainer &objects,
|
---|
[466] | 675 | const VssRayContainer &sampleRays);
|
---|
[440] | 676 |
|
---|
| 677 | int GetType() const;
|
---|
| 678 |
|
---|
| 679 | ViewCell *GenerateViewCell(Mesh *mesh = NULL) const;
|
---|
| 680 |
|
---|
| 681 | bool ViewCellsConstructed() const;
|
---|
| 682 |
|
---|
[475] | 683 | //void PrintStatistics(ostream &s) const;
|
---|
[452] | 684 |
|
---|
[468] | 685 | int CastLineSegment(const Vector3 &origin,
|
---|
| 686 | const Vector3 &termination,
|
---|
| 687 | ViewCellContainer &viewcells);
|
---|
| 688 |
|
---|
[471] | 689 | float GetProbability(ViewCell *viewCell);
|
---|
[605] | 690 |
|
---|
[466] | 691 |
|
---|
[879] | 692 | /** Get a viewcell containing the specified point
|
---|
| 693 | */
|
---|
| 694 | ViewCell *GetViewCell(const Vector3 &point, const bool active = false) const;
|
---|
[492] | 695 |
|
---|
[503] | 696 | void CreateMesh(ViewCell *vc);
|
---|
| 697 |
|
---|
[591] | 698 | void ExportViewCellGeometry(Exporter *exporter,
|
---|
| 699 | ViewCell *vc,
|
---|
[660] | 700 | const Plane3 *clipPlane = NULL) const;
|
---|
[580] | 701 |
|
---|
[587] | 702 | void CollectMergeCandidates(const VssRayContainer &rays,
|
---|
| 703 | vector<MergeCandidate> &candidates);
|
---|
[547] | 704 |
|
---|
[587] | 705 | void Finalize(ViewCell *viewCell, const bool createMesh);
|
---|
| 706 |
|
---|
[931] | 707 | bool ExportViewCells(const string filename, const bool exportPvs, const ObjectContainer &objects);
|
---|
[590] | 708 |
|
---|
[752] | 709 | /** Constructs merge hierarchy which corresponds to the spatial hierarchy.
|
---|
| 710 | */
|
---|
[650] | 711 | ViewCell *ConstructSpatialMergeTree(BspNode *root);
|
---|
[610] | 712 |
|
---|
[752] | 713 | /** Updates the pvs in the view cells tree.
|
---|
| 714 | */
|
---|
| 715 | void UpdatePvsForEvaluation(ViewCell *root, ObjectPvs &pvs);
|
---|
[610] | 716 |
|
---|
[859] | 717 |
|
---|
[440] | 718 | protected:
|
---|
| 719 |
|
---|
[610] | 720 |
|
---|
[480] | 721 | void CollectViewCells();
|
---|
| 722 |
|
---|
[482] | 723 | void ExportColor(Exporter *exporter, ViewCell *vc) const;
|
---|
[547] | 724 |
|
---|
[440] | 725 | /// the BSP tree.
|
---|
| 726 | BspTree *mBspTree;
|
---|
[475] | 727 |
|
---|
| 728 | vector<BspRay *> mBspRays;
|
---|
[440] | 729 |
|
---|
| 730 | private:
|
---|
| 731 |
|
---|
| 732 | /** Exports visualization of the BSP splits.
|
---|
| 733 | */
|
---|
[477] | 734 | void ExportSplits(const ObjectContainer &objects);
|
---|
[440] | 735 |
|
---|
| 736 | /** Exports visualization of the BSP PVS.
|
---|
| 737 | */
|
---|
[477] | 738 | void ExportBspPvs(const ObjectContainer &objects);
|
---|
[440] | 739 |
|
---|
[1002] | 740 | /** test if subdivision is valid in terms of volume / area.
|
---|
| 741 | */
|
---|
[693] | 742 | void TestSubdivision();
|
---|
[440] | 743 | };
|
---|
| 744 |
|
---|
| 745 | /**
|
---|
| 746 | Manages different higher order operations on the KD type view cells.
|
---|
| 747 | */
|
---|
| 748 | class KdViewCellsManager: public ViewCellsManager
|
---|
| 749 | {
|
---|
| 750 |
|
---|
| 751 | public:
|
---|
| 752 |
|
---|
[1004] | 753 | KdViewCellsManager(KdTree *tree);
|
---|
[440] | 754 |
|
---|
[574] | 755 | int ConstructSubdivision(const ObjectContainer &objects,
|
---|
[487] | 756 | const VssRayContainer &rays);
|
---|
[440] | 757 |
|
---|
[478] | 758 | int CastLineSegment(const Vector3 &origin,
|
---|
| 759 | const Vector3 &termination,
|
---|
| 760 | ViewCellContainer &viewcells);
|
---|
[440] | 761 |
|
---|
| 762 | int PostProcess(const ObjectContainer &objects,
|
---|
[466] | 763 | const VssRayContainer &rays);
|
---|
[440] | 764 |
|
---|
| 765 | void Visualize(const ObjectContainer &objects,
|
---|
[466] | 766 | const VssRayContainer &sampleRays);
|
---|
[440] | 767 |
|
---|
| 768 | int GetType() const;
|
---|
| 769 |
|
---|
| 770 | bool ViewCellsConstructed() const;
|
---|
| 771 |
|
---|
[580] | 772 | ViewCell *GenerateViewCell(Mesh *mesh) const;
|
---|
[440] | 773 |
|
---|
[452] | 774 | /** Prints out statistics of this approach.
|
---|
| 775 | */
|
---|
[503] | 776 | // virtual void PrintStatistics(ostream &s) const;
|
---|
[879] | 777 | ViewCell *GetViewCell(const Vector3 &point, const bool active = false) const { return NULL; }
|
---|
[452] | 778 |
|
---|
[503] | 779 | float GetProbability(ViewCell *viewCell);
|
---|
[609] | 780 |
|
---|
[468] | 781 |
|
---|
[503] | 782 | void CreateMesh(ViewCell *vc);
|
---|
| 783 |
|
---|
[591] | 784 | void ExportViewCellGeometry(Exporter *exporter,
|
---|
| 785 | ViewCell *vc,
|
---|
[660] | 786 | const Plane3 *clipPlane = NULL) const;
|
---|
[547] | 787 |
|
---|
[591] | 788 | void CollectMergeCandidates(const VssRayContainer &rays,
|
---|
| 789 | vector<MergeCandidate> &candidates);
|
---|
[580] | 790 |
|
---|
[752] | 791 |
|
---|
[440] | 792 | protected:
|
---|
| 793 |
|
---|
[752] | 794 | virtual void UpdatePvsForEvaluation(ViewCell *root, ObjectPvs &pvs) {};
|
---|
[580] | 795 | /** Collects view cells from a hierarchy.
|
---|
| 796 | */
|
---|
[480] | 797 | void CollectViewCells();
|
---|
[580] | 798 |
|
---|
[480] | 799 | KdNode *GetNodeForPvs(KdLeaf *leaf);
|
---|
[440] | 800 |
|
---|
[482] | 801 | void ExportColor(Exporter *exporter, ViewCell *vc) const;
|
---|
[440] | 802 |
|
---|
[547] | 803 |
|
---|
[480] | 804 | /// the BSP tree.
|
---|
| 805 | KdTree *mKdTree;
|
---|
[440] | 806 |
|
---|
[480] | 807 | /// depth of the KD tree nodes with represent the view cells
|
---|
| 808 | int mKdPvsDepth;
|
---|
[938] | 809 |
|
---|
| 810 |
|
---|
[440] | 811 | };
|
---|
| 812 |
|
---|
| 813 | /**
|
---|
[442] | 814 | Manages different higher order operations on the view cells.
|
---|
| 815 | */
|
---|
| 816 | class VspBspViewCellsManager: public ViewCellsManager
|
---|
| 817 | {
|
---|
| 818 |
|
---|
| 819 | public:
|
---|
| 820 |
|
---|
[1004] | 821 | VspBspViewCellsManager(VspBspTree *tree);
|
---|
[475] | 822 | ~VspBspViewCellsManager();
|
---|
[442] | 823 |
|
---|
[574] | 824 | int ConstructSubdivision(const ObjectContainer &objects,
|
---|
[487] | 825 | const VssRayContainer &rays);
|
---|
[442] | 826 |
|
---|
| 827 | int PostProcess(const ObjectContainer &objects,
|
---|
[466] | 828 | const VssRayContainer &rays);
|
---|
[442] | 829 |
|
---|
| 830 | void Visualize(const ObjectContainer &objects,
|
---|
[466] | 831 | const VssRayContainer &sampleRays);
|
---|
[442] | 832 |
|
---|
| 833 | int GetType() const;
|
---|
| 834 |
|
---|
| 835 | ViewCell *GenerateViewCell(Mesh *mesh = NULL) const;
|
---|
| 836 |
|
---|
| 837 | bool ViewCellsConstructed() const;
|
---|
| 838 |
|
---|
[468] | 839 |
|
---|
| 840 | int CastLineSegment(const Vector3 &origin,
|
---|
| 841 | const Vector3 &termination,
|
---|
| 842 | ViewCellContainer &viewcells);
|
---|
[452] | 843 |
|
---|
[471] | 844 | float GetProbability(ViewCell *viewCell);
|
---|
[479] | 845 |
|
---|
[879] | 846 | ViewCell *GetViewCell(const Vector3 &point, const bool active = false) const;
|
---|
[477] | 847 |
|
---|
[487] | 848 | bool GetViewPoint(Vector3 &viewPoint) const;
|
---|
| 849 |
|
---|
[490] | 850 | bool ViewPointValid(const Vector3 &viewPoint) const;
|
---|
[503] | 851 |
|
---|
| 852 | void CreateMesh(ViewCell *vc);
|
---|
| 853 |
|
---|
[931] | 854 | bool ExportViewCells(const string filename, const bool exportPvs, const ObjectContainer &objects);
|
---|
[508] | 855 |
|
---|
[532] | 856 | int CastBeam(Beam &beam);
|
---|
| 857 |
|
---|
[591] | 858 | void ExportViewCellGeometry(Exporter *exporter,
|
---|
| 859 | ViewCell *vc,
|
---|
[660] | 860 | const Plane3 *clipPlane = NULL) const;
|
---|
[547] | 861 |
|
---|
[551] | 862 | //float GetVolume(ViewCell *viewCell) const;
|
---|
| 863 |
|
---|
[555] | 864 | void Finalize(ViewCell *viewCell, const bool createMesh);
|
---|
[551] | 865 |
|
---|
[580] | 866 | void CollectMergeCandidates(const VssRayContainer &rays, vector<MergeCandidate> &candidates);
|
---|
| 867 |
|
---|
[697] | 868 | /** Returns true if this view cell is equivavalent to a spatial node.
|
---|
| 869 | */
|
---|
[609] | 870 | bool EqualToSpatialNode(ViewCell *viewCell) const;
|
---|
[607] | 871 |
|
---|
[697] | 872 |
|
---|
[442] | 873 | protected:
|
---|
[475] | 874 |
|
---|
[697] | 875 | int ComputeBoxIntersections(const AxisAlignedBox3 &box, ViewCellContainer &viewCells) const;
|
---|
[651] | 876 |
|
---|
[610] | 877 | /** Returns node of the spatial hierarchy corresponding to the view cell
|
---|
| 878 | if such a node exists.
|
---|
| 879 | */
|
---|
[609] | 880 | BspNode *GetSpatialNode(ViewCell *viewCell) const;
|
---|
[610] | 881 |
|
---|
[503] | 882 | /** Merges the view cells.
|
---|
[442] | 883 | */
|
---|
[508] | 884 | void MergeViewCells(const VssRayContainer &rays,
|
---|
| 885 | const ObjectContainer &objects);
|
---|
[503] | 886 |
|
---|
[564] | 887 | void RefineViewCells(const VssRayContainer &rays, const ObjectContainer &objects);
|
---|
[442] | 888 |
|
---|
[480] | 889 | void CollectViewCells();
|
---|
| 890 |
|
---|
[482] | 891 | /** Returns maximal depth difference of view cell
|
---|
| 892 | leaves in tree.
|
---|
| 893 | */
|
---|
| 894 | int GetMaxTreeDiff(ViewCell *vc) const;
|
---|
[485] | 895 |
|
---|
[482] | 896 |
|
---|
[485] | 897 | void ExportColor(Exporter *exporter, ViewCell *vc) const;
|
---|
| 898 |
|
---|
[752] | 899 | /** Prepare view cells for use after loading them from disc.
|
---|
| 900 | */
|
---|
[577] | 901 | void PrepareLoadedViewCells();
|
---|
| 902 |
|
---|
[752] | 903 | /** Constructs merge hierarchy which corresponds to the spatial hierarchy.
|
---|
| 904 | */
|
---|
[650] | 905 | ViewCell *ConstructSpatialMergeTree(BspNode *root);
|
---|
[649] | 906 |
|
---|
[752] | 907 | void UpdatePvsForEvaluation(ViewCell *root, ObjectPvs &pvs);
|
---|
| 908 |
|
---|
| 909 |
|
---|
[979] | 910 | /// HACK for testing visibility filter functionality
|
---|
[697] | 911 | void TestFilter(const ObjectContainer &objects);
|
---|
| 912 |
|
---|
| 913 |
|
---|
[979] | 914 | /** Visualization of the pvs difference to exact visubility using
|
---|
| 915 | from point queries.
|
---|
| 916 | */
|
---|
| 917 | void VisualizeWithFromPointQueries();
|
---|
[697] | 918 |
|
---|
[991] | 919 | /** Evaluate from point queries for the current scene.
|
---|
| 920 | */
|
---|
| 921 | void EvalFromPointQueries();
|
---|
[979] | 922 |
|
---|
[991] | 923 |
|
---|
[442] | 924 | /// the view space partition BSP tree.
|
---|
| 925 | VspBspTree *mVspBspTree;
|
---|
| 926 |
|
---|
[591] | 927 |
|
---|
[442] | 928 | private:
|
---|
| 929 |
|
---|
| 930 | /** Exports visualization of the BSP splits.
|
---|
| 931 | */
|
---|
[485] | 932 | void ExportSplits(const ObjectContainer &objects,
|
---|
| 933 | const VssRayContainer &rays);
|
---|
[442] | 934 |
|
---|
| 935 | /** Exports visualization of the BSP PVS.
|
---|
| 936 | */
|
---|
[485] | 937 | void ExportBspPvs(const ObjectContainer &objects,
|
---|
| 938 | const VssRayContainer &rays);
|
---|
[442] | 939 |
|
---|
[1002] | 940 | /** test if subdivision is valid in terms of volume / area.
|
---|
| 941 | */
|
---|
[693] | 942 | void TestSubdivision();
|
---|
[442] | 943 | };
|
---|
| 944 |
|
---|
[575] | 945 |
|
---|
[1002] | 946 | /*class ViewCellsManagerFactory
|
---|
[575] | 947 | {
|
---|
| 948 | public:
|
---|
| 949 | ViewCellsManager *Create(const string mName);
|
---|
[1002] | 950 | };*/
|
---|
[575] | 951 |
|
---|
[860] | 952 | }
|
---|
| 953 |
|
---|
[440] | 954 | #endif
|
---|