[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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[2105] | 5 | #include "SimpleRay.h"
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[440] | 6 | #include "VssRay.h"
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| 7 | #include "Containers.h"
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[475] | 8 | #include "ViewCell.h"
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[440] | 9 |
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[2332] | 10 | #define TEST_PACKETS 0
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[2176] | 11 |
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[860] | 12 | namespace GtpVisibilityPreprocessor {
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| 13 |
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[440] | 14 | class ViewCell;
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| 15 | class Intersectable;
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| 16 | class RenderSimulator;
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[480] | 17 | class Renderer;
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[440] | 18 | class Mesh;
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| 19 | struct Triangle3;
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| 20 | class SimulationStatistics;
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| 21 | class BspTree;
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| 22 | class KdTree;
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[1006] | 23 | class VspOspTree;
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[440] | 24 | class VspBspTree;
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| 25 | class KdNode;
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| 26 | class KdLeaf;
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| 27 | class AxisAlignedBox3;
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[448] | 28 | class BspLeaf;
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[475] | 29 | class ViewCellsStatistics;
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[482] | 30 | class Exporter;
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[532] | 31 | class Beam;
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[570] | 32 | class Preprocessor;
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[580] | 33 | class ViewCellsTree;
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| 34 | class MergeCandidate;
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[931] | 35 | class BoundingBoxConverter;
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[1021] | 36 | class VspTree;
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| 37 | class OspTree;
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| 38 | class VspNode;
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[1027] | 39 | class HierarchyManager;
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[1259] | 40 | class BvHierarchy;
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[1264] | 41 | class ViewCellsTree;
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[1786] | 42 | class ViewCell;
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[1903] | 43 | class MixtureDistribution;
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[1047] | 44 | struct AxisAlignedPlane;
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[475] | 45 | struct BspRay;
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[2116] | 46 | class BspTree;
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[475] | 47 |
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[1903] | 48 |
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[2015] | 49 |
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[2116] | 50 | struct PvsFilterStatistics
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| 51 | {
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[1773] | 52 | PvsFilterStatistics():
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[2116] | 53 | mAvgFilterRadius(0.0f), mLocalFilterCount(0), mGlobalFilterCount(0) {}
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| 54 |
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[1761] | 55 | float mAvgFilterRadius;
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| 56 | int mLocalFilterCount;
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| 57 | int mGlobalFilterCount;
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[2116] | 58 | };
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| 59 |
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[1145] | 60 | /** Probably Visible Set
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| 61 | */
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[697] | 62 | class PrVs
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| 63 | {
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| 64 | public:
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[2116] | 65 | /// root of view cells tree
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| 66 | ViewCell *mViewCell;
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| 67 | // input parameter is the render budget for the PrVs
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| 68 | float mRenderBudget;
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[677] | 69 | };
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| 70 |
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[1786] | 71 |
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| 72 | class LocalMergeNode
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| 73 | {
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| 74 | public:
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| 75 | virtual ~LocalMergeNode() {};
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| 76 | virtual bool IsLeaf() const = 0;
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| 77 | };
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| 78 |
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[2017] | 79 | typedef pair<ViewCell *, SimpleRayContainer> ViewCellPoints;
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[1786] | 80 |
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[2571] | 81 | struct VizBuffer
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| 82 | {
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| 83 | VizBuffer(): mIndex(0), mMaxSize(10000)
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| 84 | {
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| 85 | }
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| 86 |
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| 87 | int GetSize() const {return (int)mVizRays.size();}
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| 88 |
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| 89 | void AddRay(VssRay *ray)
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| 90 | {
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| 91 | if (mVizRays.size() < mMaxSize)
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| 92 | mVizRays.push_back(ray);
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| 93 | else
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| 94 | mVizRays[mIndex] = ray;
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| 95 |
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| 96 | mIndex = (mIndex + 1) % mMaxSize;
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| 97 | }
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| 98 |
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| 99 | VssRayContainer &GetRays() { return mVizRays;}
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| 100 |
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| 101 | VssRay *GetRay(int i) { return mVizRays[i % 100];}
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| 102 |
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| 103 | protected:
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| 104 |
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| 105 | const int mMaxSize;
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| 106 | int mIndex;
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| 107 | VssRayContainer mVizRays;
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| 108 | };
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| 109 |
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| 110 |
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[850] | 111 | /** Manages different higher order operations on the view cells.
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[440] | 112 | */
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| 113 | class ViewCellsManager
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| 114 | {
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| 115 | public:
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[1983] | 116 |
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[2116] | 117 | struct PerViewCellStat
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| 118 | {
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| 119 | float pvsSize;
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| 120 | float relPvsIncrease;
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[1983] | 121 | };
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| 122 |
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[2116] | 123 | struct SamplesStatistics
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[728] | 124 | {
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[2116] | 125 | int mRays;
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| 126 | int mViewCells;
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| 127 | int mContributingRays;
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| 128 | int mPvsContributions;
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| 129 | void Reset()
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| 130 | {
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| 131 | mRays = 0;
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| 132 | mViewCells = 0;
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| 133 | mContributingRays = 0;
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| 134 | mPvsContributions = 0;
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| 135 | };
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| 136 | };
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[1974] | 137 |
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[2116] | 138 | struct PvsStatistics
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| 139 | {
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| 140 | float minPvs;
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| 141 | float maxPvs;
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| 142 | float avgPvs;
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[2205] | 143 | float renderCost;
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[2116] | 144 | float avgPvsEntries;
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| 145 |
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| 146 | float avgFilteredPvs;
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| 147 | float avgFilteredPvsEntries;
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| 148 |
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| 149 | float avgFilterContribution;
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| 150 | float avgFilterRadius;
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| 151 | float avgFilterRatio;
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| 152 | float avgRelPvsIncrease;
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| 153 | float devRelPvsIncrease;
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| 154 | int viewcells;
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[2224] | 155 |
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| 156 | float mem;
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[2227] | 157 | float renderCostRatio;
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[1545] | 158 | };
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[1942] | 159 |
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[728] | 160 | /// view cell container types
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[1021] | 161 | enum {BSP, KD, VSP_KD, VSP_BSP, VSP_OSP};
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[466] | 162 |
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[931] | 163 | /// render cost evaluation type
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[728] | 164 | enum {PER_OBJECT, PER_TRIANGLE};
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| 165 |
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[1545] | 166 | friend class X3dViewCellsParseHandlers;
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[1709] | 167 |
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[1004] | 168 | /** Default constructor.
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[440] | 169 | */
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[1264] | 170 | ViewCellsManager(ViewCellsTree *viewCellsTree);
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[2539] | 171 | /** Destructor.
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| 172 | */
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[462] | 173 | virtual ~ViewCellsManager();
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[527] | 174 | /** Constructs view cells container taking a preprocessor
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[570] | 175 | @returns the output rays (if not null)
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| 176 | */
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| 177 | int Construct(Preprocessor *preprocessor, VssRayContainer *outRays = NULL);
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[527] | 178 |
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[440] | 179 | /** Constructs view cell container with a given number of samples.
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| 180 | */
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[1709] | 181 | virtual int ConstructSubdivision(const ObjectContainer &objects,
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| 182 | const VssRayContainer &rays) = 0;
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[440] | 183 |
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[441] | 184 | /** Computes sample contributions of the rays to the view cells PVS.
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| 185 |
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| 186 | @param rays bundle of rays used to find intersections with view cells and
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| 187 | adding the contribution
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[563] | 188 | @param addRays true if rays should be added to the PVSs of the viewcells they
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[574] | 189 | intersect
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| 190 | @param storeViewCells true if view cells should be stored in the ray
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| 191 | */
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[2332] | 192 | virtual float ComputeSampleContributions(const VssRayContainer &rays,
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| 193 | const bool addContributions,
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| 194 | const bool storeViewCells,
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| 195 | const bool useHitObject = false);
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[440] | 196 |
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[475] | 197 | /** Computes sample contribution of a simgle ray to the view cells PVS.
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| 198 | @param ray finds intersections with view cells and holds the contribution
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[1570] | 199 | @param addSample if sample should be added to the pvs
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| 200 |
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[475] | 201 | @returns number of sample contributions
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| 202 | */
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[1159] | 203 | virtual float ComputeSampleContribution(VssRay &ray,
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[1981] | 204 | const bool addContributions,
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[1990] | 205 | const bool storeViewCells,
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| 206 | const bool useHitObject = false);
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[1977] | 207 | /** Compute sample contribution only for current view cell.
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| 208 | */
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| 209 | virtual float ComputeSampleContribution(VssRay &ray,
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[1981] | 210 | const bool addContributions,
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[1990] | 211 | ViewCell *currentViewCell,
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| 212 | const bool useHitObject = false);
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[452] | 213 | /** Prints out statistics of the view cells.
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| 214 | */
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[2176] | 215 | virtual void PrintStatistics(std::ostream &s) const;
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[440] | 216 | /** Post processes view cells givemŽa number of rays.
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| 217 | */
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[475] | 218 | virtual int PostProcess(const ObjectContainer &objects,
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| 219 | const VssRayContainer &rays) = 0;
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[440] | 220 | /** Show visualization of the view cells.
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| 221 | */
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| 222 | virtual void Visualize(const ObjectContainer &objects,
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[466] | 223 | const VssRayContainer &sampleRays) = 0;
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[1982] | 224 | /** collect objects intersecting a given spatial box.
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| 225 | */
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| 226 | virtual void CollectObjects(const AxisAlignedBox3 &box, ObjectContainer &objects);
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[440] | 227 | /** type of the view cell container.
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| 228 | */
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| 229 | virtual int GetType() const = 0;
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[463] | 230 | /** Load the input viewcells. The input viewcells should be given as a collection
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[1545] | 231 | of meshes. Each mesh is assume to form a bounded polyhedron
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| 232 | defining the interior of the viewcell. The view cells manager
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| 233 | is responsible for building a hierarchy over these view cells.
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[463] | 234 |
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| 235 | @param filename file to load
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| 236 | @return true on success
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[1982] | 237 | */
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| 238 | virtual bool LoadViewCellsGeometry(const string filename, const bool extrudeBaseTriangle);
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[440] | 239 | /** Merges two view cells.
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| 240 | @note the piercing rays of the front and back will be ordered
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| 241 | @returns new view cell based on the merging.
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| 242 | */
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[582] | 243 | ViewCellInterior *MergeViewCells(ViewCell *front, ViewCell *back) const;
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| 244 | /** Merges a container of view cells.
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| 245 | @returns new view cell based on the merging.
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| 246 | */
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| 247 | ViewCellInterior *MergeViewCells(ViewCellContainer &children) const;
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[1545] | 248 | /** Generates view cell of the type specified by this manager
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[440] | 249 | */
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[580] | 250 | virtual ViewCell *GenerateViewCell(Mesh *mesh = NULL) const = 0;
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[1545] | 251 | /** Constructs view cell from base triangle.
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| 252 | The view cell is extruded along the normal vector.
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| 253 | @param the base triangle
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| 254 | @param the height of the newly created view cell
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[440] | 255 | */
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[1545] | 256 | ViewCell *ExtrudeViewCell(const Triangle3 &baseTri, const float height) const;
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[2539] | 257 | /** Returns the intersectable that was hit by the ray.
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| 258 | */
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[1982] | 259 | virtual Intersectable *GetIntersectable(const VssRay &ray, const bool isTermination) const;
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[440] | 260 | /** Sets maximal number of samples used for the
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| 261 | construction of the view cells.
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| 262 | */
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| 263 | void SetVisualizationSamples(const int visSamples);
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[574] | 264 | /** Sets maximal number of samples used for the construction of the view cells.
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[440] | 265 | */
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| 266 | void SetConstructionSamples(const int constructionSamples);
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[574] | 267 | /** Sets maximal number of samples used for the visualization of the view cells.
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| 268 | */
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| 269 | void SetInitialSamples(const int initialSamples);
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[440] | 270 | /** Sets maximal number of samples used for the post processing of the view cells.
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| 271 | */
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| 272 | void SetPostProcessSamples(const int postProcessingSamples);
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| 273 | /** See set.
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| 274 | */
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| 275 | int GetVisualizationSamples() const;
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| 276 | /** See set.
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| 277 | */
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| 278 | int GetConstructionSamples() const;
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| 279 | /** See set.
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| 280 | */
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| 281 | int GetPostProcessSamples() const;
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[1002] | 282 | /** Returns true if view cells are already constructed.
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[440] | 283 | */
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| 284 | virtual bool ViewCellsConstructed() const = 0;
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[477] | 285 | /** cast line segment to get a list of unique viewcells which are intersected
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| 286 | by this line segment
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| 287 | */
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[1977] | 288 | virtual int CastLineSegment(const Vector3 &origin,
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[2539] | 289 | const Vector3 &termination,
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| 290 | ViewCellContainer &viewcells) = 0;
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[1977] | 291 | /** Tests if this line segment intersects a particular view cell.
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| 292 | */
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| 293 | virtual bool LineSegmentIntersects(const Vector3 &origin,
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| 294 | const Vector3 &termination,
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| 295 | ViewCell *viewCell) = 0;
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[1294] | 296 | /** Returns a stats about the global pvs.
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| 297 | */
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[477] | 298 | virtual void GetPvsStatistics(PvsStatistics &stat);
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[2539] | 299 | /** Returns the probably visible set of the view space filtered pvs.
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| 300 | */
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[904] | 301 | virtual void GetPrVS(const Vector3 &viewPoint, PrVs &prvs, const float filterWidth);
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[2111] | 302 | /** Get a viewcell containing the specified view point.
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[879] | 303 | @param active if the active or elementary view cell should be returned.
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[697] | 304 | */
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[879] | 305 | virtual ViewCell *GetViewCell(const Vector3 &point, const bool active = false) const = 0;
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[2539] | 306 | /** Returns the view cell with the given index (different from the id).
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| 307 | */
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[1982] | 308 | ViewCell *GetViewCell(const int idx) const {return mViewCells[idx];}
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[2539] | 309 | /** Prints the statistics over the view cell pvss.
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| 310 | */
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[2176] | 311 | virtual void PrintPvsStatistics(std::ostream &s);
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[719] | 312 | /** Updates pvs of the view cell hierarchy if necessary.
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| 313 | */
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| 314 | void UpdatePvs();
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[477] | 315 | /** Returns probability that view point lies in one view cell.
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| 316 | */
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| 317 | virtual float GetProbability(ViewCell *viewCell) = 0;
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| 318 | /** Returns render cost of a single view cell given the render cost of an object.
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| 319 | */
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[728] | 320 | float GetRendercost(ViewCell *viewCell) const;
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[720] | 321 | /** Returns reference to container of loaded / generated view cells.
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[477] | 322 | */
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| 323 | ViewCellContainer &GetViewCells();
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[485] | 324 | /** Helper function used to split ray sets uniformly
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| 325 | into one that is currently used and the other that
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| 326 | is saved for later processing.
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| 327 | @param sourceRays the input ray set
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| 328 | @param maxSize the maximal number of rays that will be used
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| 329 | @param usedRays returns the used ray set
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| 330 | @param savedRays if not null, returns the saved ray set
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[477] | 331 | */
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| 332 | void GetRaySets(const VssRayContainer &sourceRays,
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[485] | 333 | const int maxSize,
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| 334 | VssRayContainer &usedRays,
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| 335 | VssRayContainer *savedRays = NULL) const;
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[480] | 336 | /** Returns accumulated area of all view cells.
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| 337 | */
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| 338 | float GetAccVcArea();
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| 339 | /** Returns area of one view cell.
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| 340 | */
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| 341 | virtual float GetArea(ViewCell *viewCell) const;
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[551] | 342 | /** Returns volume of view cell.
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[480] | 343 | */
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| 344 | virtual float GetVolume(ViewCell *viewCell) const;
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| 345 | /** Sets the current renderer mainly for view cells statistics.
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| 346 | */
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| 347 | void SetRenderer(Renderer *renderer);
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[487] | 348 | /** Computes a (random) view point in the valid view space.
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| 349 | @returns true if valid view point was found
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| 350 | */
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| 351 | virtual bool GetViewPoint(Vector3 &viewPoint) const;
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[2539] | 352 | /** Returns the current view point given a vector for activating the halton sequence.
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| 353 | */
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[1982] | 354 | virtual bool GetViewPoint(Vector3 &viewPoint, const Vector3 ¶ms) const;
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[490] | 355 | /** Returns true if this view point is in the valid view space.
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| 356 | */
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| 357 | virtual bool ViewPointValid(const Vector3 &viewPoint) const;
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[487] | 358 | /** Sets a view space boundary.
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| 359 | */
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| 360 | void SetViewSpaceBox(const AxisAlignedBox3 &box);
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[2539] | 361 | /** Returns the boundaries of the view space.
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| 362 | */
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[519] | 363 | AxisAlignedBox3 GetViewSpaceBox() const;
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[503] | 364 | /** Creates mesh for this view cell.
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| 365 | */
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| 366 | virtual void CreateMesh(ViewCell *vc) = NULL;
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[508] | 367 | /** Writes view cells to disc.
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| 368 | */
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[1027] | 369 | virtual bool ExportViewCells(const string filename,
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| 370 | const bool exportPvs,
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| 371 | const ObjectContainer &objects);
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[532] | 372 | /** Casts beam to collect view cells.
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| 373 | */
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| 374 | virtual int CastBeam(Beam &beam);
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[547] | 375 | /** Checks if view cell is considered as valid.
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| 376 | */
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[561] | 377 | virtual bool CheckValidity(ViewCell *vc,
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[562] | 378 | int minPvsSize,
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| 379 | int maxPvsSize) const;
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[2539] | 380 | /** Resort pvss after a pass of the algorithm.
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| 381 | */
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[2117] | 382 | void SortViewCellPvs();
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[2539] | 383 | /** Map the ray intersection objects from triangles to high level objects.
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| 384 | */
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[2117] | 385 | void DeterminePvsObjects(VssRayContainer &rays,
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| 386 | const bool useHitObjects = false);
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[562] | 387 | /** Sets validity of view cell
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| 388 | */
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| 389 | virtual void SetValidity(ViewCell *vc,
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| 390 | int minPvsSize,
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| 391 | int maxPvsSize) const;
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[710] | 392 | /** sets validy of all viewcells
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| 393 | */
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[2539] | 394 | virtual void SetValidity(int minPvsSize, int maxPvsSize) const;
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[2117] | 395 | /** Set valid viewcells in the range of pvs. sorts the viewcells
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| 396 | according to the pvs and then pickups those in the ranges
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| 397 | */
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[710] | 398 | void SetValidityPercentage(const float minValid, const float maxValid);
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[1545] | 399 | /** Returns number of valid view cells.
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| 400 | */
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[609] | 401 | int CountValidViewcells() const;
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[547] | 402 | /** Returns maximal allowed pvs size.
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| 403 | */
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| 404 | int GetMaxPvsSize() const;
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[562] | 405 | /** Returns maximal allowed pvs size.
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| 406 | */
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| 407 | int GetMinPvsSize() const;
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[561] | 408 | /** Returns maximal ratio. i.e., currentPVs / maxPvs,
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| 409 | where pvs is still considered valid.
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| 410 | */
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| 411 | float GetMaxPvsRatio() const;
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[547] | 412 | /** Exports view cell geometry.
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| 413 | */
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[2117] | 414 | virtual void ExportViewCellGeometry(Exporter *exporter,
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| 415 | ViewCell *vc,
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| 416 | const AxisAlignedBox3 *box,
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| 417 | const AxisAlignedPlane *clipPlane = NULL
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| 418 | ) const = 0;
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[860] | 419 | /** Brings the view cells into their final state, computes meshes and volume.
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| 420 | */
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[551] | 421 | virtual void FinalizeViewCells(const bool createMesh);
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[579] | 422 | /** Evaluates statistics values on view cells.
|
---|
| 423 | */
|
---|
[580] | 424 | void EvaluateRenderStatistics(float &totalRenderCost,
|
---|
| 425 | float &expectedRenderCost,
|
---|
| 426 | float &deviation,
|
---|
| 427 | float &variance,
|
---|
[1709] | 428 | float &totalPvs,
|
---|
[580] | 429 | float &avgRenderCost);
|
---|
| 430 | /** Returns hierarchy of the view cells.
|
---|
| 431 | */
|
---|
| 432 | ViewCellsTree *GetViewCellsTree();
|
---|
[1545] | 433 | /** Collect candidates for the view cell merge.
|
---|
| 434 | */
|
---|
[581] | 435 | virtual void CollectMergeCandidates(const VssRayContainer &rays,
|
---|
[1022] | 436 | vector<MergeCandidate> &candidates);
|
---|
[1294] | 437 | /** Collects n view cells and stores it as the active view cells.
|
---|
| 438 | */
|
---|
[610] | 439 | void CollectViewCells(const int n);
|
---|
[1686] | 440 | /** Sets current view cells set to active,
|
---|
| 441 | i.e., the sampling is done in this view cell set.
|
---|
[660] | 442 | */
|
---|
| 443 | void SetViewCellsActive();
|
---|
[1145] | 444 | /** Evaluates render cost statistics of current view cell hierarchy.
|
---|
[660] | 445 | */
|
---|
[1178] | 446 | virtual void EvalViewCellPartition();
|
---|
[728] | 447 | /** Sets maximal size of a view cell filter.
|
---|
| 448 | */
|
---|
| 449 | void SetMaxFilterSize(const int size);
|
---|
[840] | 450 | /** Returns maximal filter size.
|
---|
| 451 | */
|
---|
| 452 | int GetMaxFilterSize() const;
|
---|
[1686] | 453 | /** Deletes interior nodes from the tree which have negative
|
---|
| 454 | merge cost set (local merge).
|
---|
[840] | 455 | */
|
---|
| 456 | void DeleteLocalMergeTree(ViewCell *vc) const;
|
---|
[728] | 457 | /** Evaluautes histogram for a given number of view cells.
|
---|
| 458 | */
|
---|
| 459 | void EvalViewCellHistogram(const string filename, const int nViewCells);
|
---|
[735] | 460 | /** Evaluautes histogram for a given number of view cells.
|
---|
| 461 | */
|
---|
[2117] | 462 | void EvalViewCellHistogramForPvsSize(const string filename,
|
---|
| 463 | const int nViewCells);
|
---|
[2539] | 464 | /** Evaluautes histogram for a given vector of view cells.
|
---|
| 465 | */
|
---|
[1919] | 466 | void EvalViewCellHistogramForPvsSize(const string filename,
|
---|
| 467 | ViewCellContainer &viewCells);
|
---|
[2332] | 468 | float ComputeRenderCost(const int tri, const int obj); //const
|
---|
[2569] | 469 | /** Sets pvs size of a view cell as a scalar. Used when storing pvs only in the leaves
|
---|
[1002] | 470 | of the hierarchy.
|
---|
| 471 | */
|
---|
[2117] | 472 | void UpdateScalarPvsSize(ViewCell *vc,
|
---|
| 473 | const float pvsCost,
|
---|
| 474 | const int entriesInPvs) const;
|
---|
[2569] | 475 | /** Sets render cost of a view cell as a scalar.
|
---|
| 476 | */
|
---|
| 477 | void UpdateScalarPvsCost(ViewCell *vc, const float pvsCost) const;
|
---|
| 478 |
|
---|
[870] | 479 | /** Returns bounding box of a view cell.
|
---|
| 480 | */
|
---|
| 481 | AxisAlignedBox3 GetViewCellBox(ViewCell *vc);
|
---|
[840] | 482 | /** Exports bounding boxes of objects to file.
|
---|
| 483 | */
|
---|
[2117] | 484 | bool ExportBoundingBoxes(const string filename,
|
---|
| 485 | const ObjectContainer &objects) const;
|
---|
[850] | 486 | /** Load the bounding boxes into the container.
|
---|
| 487 | */
|
---|
[2117] | 488 | bool LoadBoundingBoxes(const string filename,
|
---|
| 489 | IndexedBoundingBoxContainer &boxes) const;
|
---|
[1002] | 490 | /** Returns true if pvs should be exported together with the view cells.
|
---|
| 491 | */
|
---|
| 492 | bool GetExportPvs() const;
|
---|
[1786] | 493 | /** Efficiently merges the view cells in the container.
|
---|
| 494 | */
|
---|
[1787] | 495 | void MergeViewCellsRecursivly(ObjectPvs &pvs,
|
---|
| 496 | const ViewCellContainer &viewCells) const;
|
---|
[2539] | 497 | /** Compresses the view cells.
|
---|
[2117] | 498 | */
|
---|
[1845] | 499 | virtual void CompressViewCells();
|
---|
[2539] | 500 | /** Returns view cell with the given id.
|
---|
| 501 | */
|
---|
[2017] | 502 | ViewCell *GetViewCellById(const int id);
|
---|
| 503 | /** Returns number of view cells.
|
---|
| 504 | */
|
---|
[1982] | 505 | int GetNumViewCells() const;
|
---|
| 506 |
|
---|
[2017] | 507 | bool GenerateRandomViewCells(ViewCellContainer &viewCells,
|
---|
| 508 | const int numViewCells);
|
---|
| 509 |
|
---|
| 510 | bool GenerateRandomViewCells(vector<ViewCellPoints *> &viewCells,
|
---|
| 511 | const int nViewCells,
|
---|
| 512 | const int nViewPoints);
|
---|
| 513 |
|
---|
| 514 |
|
---|
| 515 | bool GenerateViewPoints(ViewCell *viewCell,
|
---|
| 516 | const int numViewPoints,
|
---|
| 517 | SimpleRayContainer &viewPoints);
|
---|
| 518 |
|
---|
| 519 | bool ImportRandomViewCells(const string &filename,
|
---|
| 520 | vector<ViewCellPoints *> &viewCells);
|
---|
| 521 |
|
---|
[2048] | 522 | bool ImportRandomViewCells(const string &filename);
|
---|
[2017] | 523 |
|
---|
| 524 | bool ExportRandomViewCells(const string &filename,
|
---|
| 525 | const vector<ViewCellPoints *> &viewCells);
|
---|
| 526 |
|
---|
[2048] | 527 | bool ExportRandomViewCells(const string &filename);
|
---|
| 528 |
|
---|
[2017] | 529 | bool GenerateViewPoint(ViewCell *viewCell, SimpleRay &ray);
|
---|
| 530 |
|
---|
| 531 | bool IsValidViewSpace(ViewCell *vc);
|
---|
| 532 |
|
---|
[2048] | 533 |
|
---|
[2017] | 534 | //////////////
|
---|
[1582] | 535 | // static members
|
---|
| 536 |
|
---|
| 537 | /** Loads view cells from file. The view cells manager is created with
|
---|
| 538 | respect to the loaded view cells.
|
---|
[870] | 539 |
|
---|
[1582] | 540 | @param filename the filename of the view cells
|
---|
| 541 | @param objects the scene objects
|
---|
[2115] | 542 | @param finalizeViewCells if the view cells should be post processed, i.e.,
|
---|
[2048] | 543 | a mesh is created representing the geometry
|
---|
[1582] | 544 | @param bconverter a conversion routine working with the similarities of bounding
|
---|
[2048] | 545 | boxes: if there is a certain similarity of overlap between
|
---|
| 546 | bounding boxes, two tested candidate objects are considered
|
---|
| 547 | to be the same objects
|
---|
[1582] | 548 | @returns the view cells manager if loading was successful, false otherwise
|
---|
| 549 | */
|
---|
| 550 | static ViewCellsManager *LoadViewCells(const string &filename,
|
---|
[2113] | 551 | ObjectContainer &pvsObjects,
|
---|
| 552 | ObjectContainer &preprocessorObjects,
|
---|
[1676] | 553 | bool finalizeViewCells = false,
|
---|
[1582] | 554 | BoundingBoxConverter *bconverter = NULL);
|
---|
[870] | 555 |
|
---|
[2542] | 556 | /** Convenience function assuming that there are no preprocessor objects.
|
---|
| 557 | */
|
---|
[2115] | 558 | static ViewCellsManager *LoadViewCells(const string &filename,
|
---|
| 559 | ObjectContainer &pvsObjects,
|
---|
| 560 | bool finalizeViewCells = false,
|
---|
| 561 | BoundingBoxConverter *bconverter = NULL);
|
---|
[904] | 562 |
|
---|
[2542] | 563 |
|
---|
[2113] | 564 | ///////////////////////
|
---|
[2542] | 565 | //-- visiblity filter options
|
---|
[1294] | 566 |
|
---|
[931] | 567 | // TODO: write own visibiltiy filter class
|
---|
[2048] | 568 | void ApplyFilter(KdTree *kdTree,
|
---|
| 569 | const float viewSpaceFilterSize,
|
---|
| 570 | const float spatialFilterSize);
|
---|
[904] | 571 |
|
---|
[2048] | 572 | // new adaptive version of the filter
|
---|
| 573 | PvsFilterStatistics ApplyFilter2(ViewCell *viewCell,
|
---|
| 574 | const bool useViewSpaceFilter,
|
---|
| 575 | const float filterSize,
|
---|
| 576 | ObjectPvs &pvs,
|
---|
| 577 | vector<AxisAlignedBox3> *filteredBoxes = NULL);
|
---|
[1715] | 578 |
|
---|
[931] | 579 | void ApplySpatialFilter(KdTree *kdTree,
|
---|
| 580 | const float spatialFilterSize,
|
---|
| 581 | ObjectPvs &pvs);
|
---|
[480] | 582 |
|
---|
[931] | 583 | void ApplyFilter(ViewCell *viewCell,
|
---|
| 584 | KdTree *kdTree,
|
---|
| 585 | const float viewSpaceFilterSize,
|
---|
| 586 | const float spatialFilterSize,
|
---|
| 587 | ObjectPvs &pvs);
|
---|
| 588 |
|
---|
| 589 | float GetFilterWidth();
|
---|
| 590 |
|
---|
| 591 | float GetAbsFilterWidth();
|
---|
[697] | 592 | /** Returns the bounding box of filter width.
|
---|
| 593 | */
|
---|
[2117] | 594 | AxisAlignedBox3 GetFilterBBox(const Vector3 &viewPoint,
|
---|
| 595 | const float width) const;
|
---|
[609] | 596 |
|
---|
[2199] | 597 |
|
---|
| 598 |
|
---|
[1294] | 599 | //////////////////////////////////////////////////////////////////
|
---|
[979] | 600 |
|
---|
[2048] | 601 |
|
---|
[1155] | 602 | /** If true, the kd nodes are stored instead of the object pvs.
|
---|
| 603 | */
|
---|
| 604 | void SetStoreKdPvs(const bool storeKdPvs);
|
---|
| 605 |
|
---|
| 606 | /** Returns true if the kd nodes are stored instead of the object pvs.
|
---|
| 607 | **/
|
---|
| 608 | bool GetStoreKdPVs() const;
|
---|
| 609 |
|
---|
[1570] | 610 | /** Exports single view cells for visualization.
|
---|
| 611 | @param objects the scene objects
|
---|
| 612 | @param limit the maximal number of output view cells
|
---|
| 613 | @param sortViewCells if the view cells should be sorted by pvs size
|
---|
| 614 | @param exportPvs if the pvs should also be exported
|
---|
| 615 | @param exportRays if sample rays should be exported as well
|
---|
[1580] | 616 | @param maxRays maximum number of rays to export
|
---|
| 617 | @param prefix the prefix for the output file
|
---|
[1570] | 618 | @param visRays additional rays
|
---|
| 619 | */
|
---|
[1686] | 620 | virtual void ExportSingleViewCells(const ObjectContainer &objects,
|
---|
| 621 | const int maxViewCells,
|
---|
| 622 | const bool sortViewCells,
|
---|
| 623 | const bool exportPvs,
|
---|
| 624 | const bool exportRays,
|
---|
| 625 | const int maxRays,
|
---|
[2394] | 626 | const string &prefix,
|
---|
[1686] | 627 | VssRayContainer *visRays = NULL) = NULL;
|
---|
[1570] | 628 |
|
---|
[1932] | 629 |
|
---|
[2048] | 630 | void ResetPvs();
|
---|
[1580] | 631 |
|
---|
[2571] | 632 | Preprocessor *GetPreprocessor() const
|
---|
| 633 | {
|
---|
[1932] | 634 | return mPreprocessor;
|
---|
| 635 | }
|
---|
[1580] | 636 |
|
---|
[2571] | 637 | void SetPreprocessor(Preprocessor *p)
|
---|
| 638 | {
|
---|
[1932] | 639 | mPreprocessor = p;
|
---|
| 640 | }
|
---|
[1608] | 641 |
|
---|
[2048] | 642 | vector<ViewCellPoints *> *GetViewCellPoints()
|
---|
| 643 | {
|
---|
| 644 | return &mViewCellPoints;
|
---|
| 645 | }
|
---|
| 646 |
|
---|
[1932] | 647 | void UpdatePvsForEvaluation();
|
---|
| 648 |
|
---|
[2571] | 649 |
|
---|
| 650 | VizBuffer mVizBuffer;
|
---|
| 651 |
|
---|
| 652 |
|
---|
[931] | 653 | protected:
|
---|
[1145] | 654 |
|
---|
[1932] | 655 | void ComputeViewCellContribution(ViewCell *viewCell,
|
---|
| 656 | VssRay &ray,
|
---|
| 657 | Intersectable *obj,
|
---|
| 658 | const Vector3 &pt,
|
---|
| 659 | const bool addRays);
|
---|
| 660 |
|
---|
[1787] | 661 | void MergeViewCellsRecursivly(ObjectPvs &pvs,
|
---|
| 662 | const ViewCellContainer &viewCells,
|
---|
| 663 | const int leftIdx,
|
---|
| 664 | const int rightIdx) const;
|
---|
[697] | 665 | /** Intersects box with the tree and returns the number of intersected boxes.
|
---|
[2539] | 666 | @returns number of view cells found
|
---|
[697] | 667 | */
|
---|
[710] | 668 | virtual int ComputeBoxIntersections(const AxisAlignedBox3 &box,
|
---|
| 669 | ViewCellContainer &viewCells) const;
|
---|
[880] | 670 | /** Tests the visibility filter functionality.
|
---|
| 671 | */
|
---|
[697] | 672 | virtual void TestFilter(const ObjectContainer &objects) {};
|
---|
[931] | 673 | /** If the view cells tree was already constructed or not.
|
---|
[581] | 674 | */
|
---|
| 675 | bool ViewCellsTreeConstructed() const;
|
---|
[1294] | 676 | /** Requests preprocessor to cast samplesPerPass samples of a specific type.
|
---|
| 677 | */
|
---|
[574] | 678 | int CastPassSamples(const int samplesPerPass,
|
---|
[1768] | 679 | const vector<int> &strategies,
|
---|
[574] | 680 | VssRayContainer &vssRays) const;
|
---|
[2542] | 681 | /** cast samples for the purpose of evaluating the view cells solution
|
---|
| 682 | */
|
---|
[2199] | 683 | int CastEvaluationSamples(const int samplesPerPass,
|
---|
| 684 | VssRayContainer &passSamples);// const;
|
---|
[931] | 685 | /** Parse the options from the environment file.
|
---|
| 686 | */
|
---|
[482] | 687 | void ParseEnvironment();
|
---|
[508] | 688 | /** Creates unique view cell ids.
|
---|
| 689 | */
|
---|
| 690 | void CreateUniqueViewCellIds();
|
---|
[551] | 691 | /** Finalizes, i.e., creates mesh, volume, area etc. for the view cell.
|
---|
| 692 | */
|
---|
| 693 | virtual void Finalize(ViewCell *viewCell, const bool createMesh);
|
---|
[480] | 694 | /** Recollects view cells and resets statistics.
|
---|
| 695 | */
|
---|
| 696 | void ResetViewCells();
|
---|
[1707] | 697 | /** Sets this view cell to active.
|
---|
| 698 | */
|
---|
| 699 | void SetViewCellActive(ViewCell *vc) const;
|
---|
[480] | 700 | /** Collects the view cells in the view cell container.
|
---|
| 701 | */
|
---|
| 702 | virtual void CollectViewCells() = 0;
|
---|
[2539] | 703 | /** Evaluates view cells statistics and stores it in mViewCellsStatistics.
|
---|
[479] | 704 | */
|
---|
| 705 | void EvaluateViewCellsStats();
|
---|
[2543] | 706 |
|
---|
[482] | 707 |
|
---|
[2570] | 708 | void UpdateStatsForViewCell(ViewCell *viewCell, Intersectable *obj);
|
---|
| 709 |
|
---|
| 710 |
|
---|
[1416] | 711 | ///////////////////////
|
---|
[482] | 712 | //-- helper functions for view cell visualization
|
---|
| 713 |
|
---|
| 714 | /** Exports the view cell partition.
|
---|
| 715 | */
|
---|
[1686] | 716 | void ExportViewCellsForViz(Exporter *exporter,
|
---|
| 717 | const AxisAlignedBox3 *box,
|
---|
[1760] | 718 | const bool colorCode,
|
---|
[1932] | 719 | const AxisAlignedPlane *clipPlane) const;
|
---|
[482] | 720 | /** Sets exporter color.
|
---|
| 721 | */
|
---|
[1773] | 722 | virtual void ExportColor(Exporter *exporter,
|
---|
| 723 | ViewCell *vc,
|
---|
[2394] | 724 | const int colorCode) const;
|
---|
[1416] | 725 | /** Creates meshes from the view cells.
|
---|
| 726 | */
|
---|
| 727 | void CreateViewCellMeshes();
|
---|
[1932] | 728 | /** Creates clip plane for visualization.
|
---|
[1416] | 729 | */
|
---|
| 730 | void CreateClipPlane();
|
---|
[482] | 731 |
|
---|
[1416] | 732 | AxisAlignedPlane *GetClipPlane();
|
---|
[1932] | 733 |
|
---|
[1551] | 734 | void ExportMergedViewCells(const ObjectContainer &objects);
|
---|
| 735 |
|
---|
[2048] | 736 |
|
---|
[1416] | 737 | ///////////////////////
|
---|
| 738 |
|
---|
[1002] | 739 | /** Returns volume of the view space.
|
---|
| 740 | */
|
---|
[557] | 741 | virtual float GetViewSpaceVolume();
|
---|
[1416] | 742 | /** Prepares the view cells for sampling after loading them from disc.
|
---|
[503] | 743 | */
|
---|
[577] | 744 | virtual void PrepareLoadedViewCells() {};
|
---|
[704] | 745 | /** Constructs local view cell merge hierarchy.
|
---|
| 746 | */
|
---|
| 747 | ViewCell *ConstructLocalMergeTree(ViewCell *currentViewCell,
|
---|
[2539] | 748 | const ViewCellContainer &viewCells);
|
---|
[713] | 749 | /** Constructs local view cell merge hierarchy based solely on similarity with the
|
---|
[2048] | 750 | current viewcell
|
---|
[713] | 751 | */
|
---|
| 752 | ViewCell *ConstructLocalMergeTree2(ViewCell *currentViewCell,
|
---|
| 753 | const ViewCellContainer &viewCells);
|
---|
[860] | 754 | /** Updates pvs of all view cells for statistical evaluation after some more sampling
|
---|
| 755 | */
|
---|
[1168] | 756 | void UpdatePvsForEvaluation(ViewCell *root, ObjectPvs &pvs);
|
---|
[2543] | 757 | /** Export statistics of the view cells tree.
|
---|
| 758 | */
|
---|
[1679] | 759 | virtual void ExportStats(const string &mergeStats);
|
---|
[2547] | 760 | /** Loads view cells in binary mode.
|
---|
| 761 | */
|
---|
| 762 | static ViewCellsManager *LoadViewCellsBinary(const string &filename,
|
---|
[2539] | 763 | ObjectContainer &pvsObjects,
|
---|
| 764 | bool finalizeViewCells,
|
---|
| 765 | BoundingBoxConverter *bconverter);
|
---|
[2543] | 766 | /** This helper function loads the bounding boxes for a binary solution.
|
---|
| 767 | */
|
---|
[2547] | 768 | static void LoadIndexedBoundingBoxesBinary(IN_STREAM &stream,
|
---|
| 769 | IndexedBoundingBoxContainer &iboxes);
|
---|
[2048] | 770 |
|
---|
[2539] | 771 |
|
---|
[752] | 772 |
|
---|
[2543] | 773 | ///////////
|
---|
| 774 | //-- members
|
---|
[2048] | 775 |
|
---|
[2199] | 776 | ofstream mStats;
|
---|
[1145] | 777 | Preprocessor *mPreprocessor;
|
---|
| 778 | /// if bounding boxes should be exported together with the view cells
|
---|
[840] | 779 | bool mExportBboxesForPvs;
|
---|
[1416] | 780 | /// the clip plane for visualization
|
---|
| 781 | AxisAlignedPlane mClipPlaneForViz;
|
---|
| 782 | /// if the visualization is using the clip plane
|
---|
[660] | 783 | bool mUseClipPlaneForViz;
|
---|
[480] | 784 | /// Renders the view cells.
|
---|
| 785 | Renderer *mRenderer;
|
---|
[440] | 786 | /// Loaded view cells
|
---|
[469] | 787 | ViewCellContainer mViewCells;
|
---|
[1416] | 788 | /// the view cell hierarchy (i.e., the logical description of view cells)
|
---|
[580] | 789 | ViewCellsTree *mViewCellsTree;
|
---|
[1414] | 790 |
|
---|
[1773] | 791 | std::vector<int> mStrategies;
|
---|
| 792 |
|
---|
[1416] | 793 | /** if the values in the view cell leaves and the interiors are up to date
|
---|
| 794 | this is meant for lazy storing of the pvs, where only a scalar indicating
|
---|
| 795 | pvs size is stored in interiors and not the pvs itself.
|
---|
| 796 | */
|
---|
[719] | 797 | bool mViewCellPvsIsUpdated;
|
---|
[1002] | 798 |
|
---|
[1416] | 799 | /// maximum number of samples for the view cell construction
|
---|
[440] | 800 | int mConstructionSamples;
|
---|
[574] | 801 | int mSamplesPerPass;
|
---|
| 802 | int mInitialSamples;
|
---|
[440] | 803 | int mPostProcessSamples;
|
---|
| 804 | int mVisualizationSamples;
|
---|
[441] | 805 |
|
---|
[2232] | 806 | int mEvaluationSamples;
|
---|
| 807 |
|
---|
[470] | 808 | float mTotalAreaValid;
|
---|
| 809 | float mTotalArea;
|
---|
[475] | 810 |
|
---|
[547] | 811 | int mMaxPvsSize;
|
---|
[562] | 812 | int mMinPvsSize;
|
---|
[547] | 813 | float mMaxPvsRatio;
|
---|
| 814 |
|
---|
[660] | 815 | int mSamplingType;
|
---|
[722] | 816 | int mEvaluationSamplingType;
|
---|
[600] | 817 | int mNumActiveViewCells;
|
---|
[586] | 818 | bool mCompressViewCells;
|
---|
| 819 |
|
---|
[2048] | 820 | vector<ViewCellPoints *> mViewCellPoints;
|
---|
| 821 |
|
---|
[1002] | 822 | /// holds the current view cell statistics
|
---|
[660] | 823 | ViewCellsStatistics mCurrentViewCellsStats;
|
---|
[2048] | 824 |
|
---|
[487] | 825 | /// the scene bounding box
|
---|
[542] | 826 | AxisAlignedBox3 mViewSpaceBox;
|
---|
[1001] | 827 |
|
---|
[508] | 828 | /// if view cells should be exported
|
---|
| 829 | bool mExportViewCells;
|
---|
[1002] | 830 | // if only valid view cells should be considered for processing
|
---|
[564] | 831 | bool mOnlyValidViewCells;
|
---|
[580] | 832 | /// if rays should be used to collect merge candidates
|
---|
| 833 | bool mUseRaysForMerge;
|
---|
[1002] | 834 | /// if there should be an additional merge step after the subdivision
|
---|
[592] | 835 | bool mMergeViewCells;
|
---|
[697] | 836 | /// the width of the box filter
|
---|
| 837 | float mFilterWidth;
|
---|
[1570] | 838 | /// Maximal size of the filter in terms of contributing view cells
|
---|
[697] | 839 | int mMaxFilterSize;
|
---|
[2538] | 840 | /// only for debugging: stores some rays used during view cell construction
|
---|
[1686] | 841 | VssRayContainer storedRays;
|
---|
[2538] | 842 | /// if kd node based pvs is used for preprocessing
|
---|
[1902] | 843 | bool mUseKdPvs;
|
---|
[2538] | 844 | /// types of distributions used for sampling
|
---|
[1903] | 845 | MixtureDistribution *mMixtureDistribution;
|
---|
| 846 |
|
---|
[2048] | 847 |
|
---|
[2571] | 848 |
|
---|
[1545] | 849 | //////////////////
|
---|
[487] | 850 | //-- visualization options
|
---|
| 851 |
|
---|
[1002] | 852 | /// color code for view cells visualization
|
---|
[1570] | 853 | bool mShowVisualization;
|
---|
[487] | 854 | int mColorCode;
|
---|
| 855 | bool mExportGeometry;
|
---|
| 856 | bool mExportRays;
|
---|
[517] | 857 | bool mViewCellsFinished;
|
---|
[664] | 858 | bool mEvaluateViewCells;
|
---|
[844] | 859 |
|
---|
| 860 | /// if pvs should be exported with view cells
|
---|
| 861 | bool mExportPvs;
|
---|
[1155] | 862 |
|
---|
[1703] | 863 | /// if view cells geometry should be used from other sources
|
---|
[1545] | 864 | bool mUsePredefinedViewCells;
|
---|
[2538] | 865 | /// the weight for one triangle in the heuristics
|
---|
[2332] | 866 | float mTriangleWeight;
|
---|
[2538] | 867 | /// the weight for one object (= one entity issued with one draw call) in the heuristics
|
---|
[2332] | 868 | float mObjectWeight;
|
---|
| 869 |
|
---|
| 870 | vector<PerViewCellStat> mPerViewCellStat;
|
---|
| 871 | SamplesStatistics mSamplesStat;
|
---|
[440] | 872 | };
|
---|
| 873 |
|
---|
[441] | 874 |
|
---|
[1545] | 875 | /** Manages different higher order operations on the view cells.
|
---|
[440] | 876 | */
|
---|
| 877 | class BspViewCellsManager: public ViewCellsManager
|
---|
| 878 | {
|
---|
| 879 |
|
---|
| 880 | public:
|
---|
[485] | 881 | /** Constructor taking the bsp tree and the number of samples
|
---|
| 882 | used to construct the bsp tree.
|
---|
| 883 | */
|
---|
[1264] | 884 | BspViewCellsManager(ViewCellsTree *viewCellsTree, BspTree *tree);
|
---|
[440] | 885 |
|
---|
[477] | 886 | ~BspViewCellsManager();
|
---|
[1582] | 887 |
|
---|
[574] | 888 | int ConstructSubdivision(const ObjectContainer &objects,
|
---|
[487] | 889 | const VssRayContainer &rays);
|
---|
[440] | 890 |
|
---|
| 891 | int PostProcess(const ObjectContainer &objects,
|
---|
[466] | 892 | const VssRayContainer &rays);
|
---|
[440] | 893 |
|
---|
| 894 | void Visualize(const ObjectContainer &objects,
|
---|
[466] | 895 | const VssRayContainer &sampleRays);
|
---|
[440] | 896 |
|
---|
| 897 | int GetType() const;
|
---|
| 898 |
|
---|
| 899 | ViewCell *GenerateViewCell(Mesh *mesh = NULL) const;
|
---|
| 900 |
|
---|
| 901 | bool ViewCellsConstructed() const;
|
---|
| 902 |
|
---|
[475] | 903 | //void PrintStatistics(ostream &s) const;
|
---|
[452] | 904 |
|
---|
[468] | 905 | int CastLineSegment(const Vector3 &origin,
|
---|
| 906 | const Vector3 &termination,
|
---|
| 907 | ViewCellContainer &viewcells);
|
---|
| 908 |
|
---|
[1294] | 909 | /** Returns the probability that the view point lies
|
---|
| 910 | in this view cells.
|
---|
| 911 | */
|
---|
[471] | 912 | float GetProbability(ViewCell *viewCell);
|
---|
[466] | 913 |
|
---|
[1294] | 914 | /** Get a viewcell containing the specified point.
|
---|
[879] | 915 | */
|
---|
| 916 | ViewCell *GetViewCell(const Vector3 &point, const bool active = false) const;
|
---|
[492] | 917 |
|
---|
[1294] | 918 | /** Creates mesh for this view cell.
|
---|
| 919 | */
|
---|
[503] | 920 | void CreateMesh(ViewCell *vc);
|
---|
| 921 |
|
---|
[1416] | 922 | void ExportViewCellGeometry(Exporter *exporter,
|
---|
| 923 | ViewCell *vc,
|
---|
| 924 | const AxisAlignedBox3 *box,
|
---|
| 925 | const AxisAlignedPlane *clipPlane = NULL
|
---|
| 926 | ) const;
|
---|
[580] | 927 |
|
---|
[587] | 928 | void CollectMergeCandidates(const VssRayContainer &rays,
|
---|
| 929 | vector<MergeCandidate> &candidates);
|
---|
[547] | 930 |
|
---|
[587] | 931 | void Finalize(ViewCell *viewCell, const bool createMesh);
|
---|
| 932 |
|
---|
[1416] | 933 | bool ExportViewCells(const string filename,
|
---|
| 934 | const bool exportPvs,
|
---|
| 935 | const ObjectContainer &objects);
|
---|
[590] | 936 |
|
---|
[752] | 937 | /** Constructs merge hierarchy which corresponds to the spatial hierarchy.
|
---|
| 938 | */
|
---|
[650] | 939 | ViewCell *ConstructSpatialMergeTree(BspNode *root);
|
---|
[610] | 940 |
|
---|
[1686] | 941 | void ExportSingleViewCells(const ObjectContainer &objects,
|
---|
| 942 | const int maxViewCells,
|
---|
| 943 | const bool sortViewCells,
|
---|
| 944 | const bool exportPvs,
|
---|
| 945 | const bool exportRays,
|
---|
| 946 | const int maxRays,
|
---|
[2394] | 947 | const string &prefix,
|
---|
[1686] | 948 | VssRayContainer *visRays = NULL);
|
---|
[1545] | 949 |
|
---|
[1977] | 950 | bool LineSegmentIntersects(const Vector3 &origin,
|
---|
| 951 | const Vector3 &termination,
|
---|
| 952 | ViewCell *viewCell);
|
---|
| 953 |
|
---|
[440] | 954 | protected:
|
---|
| 955 |
|
---|
[480] | 956 | void CollectViewCells();
|
---|
[547] | 957 |
|
---|
[440] | 958 | /// the BSP tree.
|
---|
| 959 | BspTree *mBspTree;
|
---|
[475] | 960 | vector<BspRay *> mBspRays;
|
---|
[440] | 961 |
|
---|
| 962 | private:
|
---|
| 963 |
|
---|
[1545] | 964 | /** Constructs a spatial merge tree only 2 levels deep.
|
---|
| 965 | */
|
---|
| 966 | ViewCell *ConstructDummyMergeTree(BspNode *root);
|
---|
[440] | 967 | /** Exports visualization of the BSP splits.
|
---|
| 968 | */
|
---|
[477] | 969 | void ExportSplits(const ObjectContainer &objects);
|
---|
[1002] | 970 | /** test if subdivision is valid in terms of volume / area.
|
---|
| 971 | */
|
---|
[693] | 972 | void TestSubdivision();
|
---|
[440] | 973 | };
|
---|
| 974 |
|
---|
[1545] | 975 |
|
---|
[440] | 976 | /**
|
---|
| 977 | Manages different higher order operations on the KD type view cells.
|
---|
| 978 | */
|
---|
| 979 | class KdViewCellsManager: public ViewCellsManager
|
---|
| 980 | {
|
---|
| 981 |
|
---|
| 982 | public:
|
---|
| 983 |
|
---|
[1264] | 984 | KdViewCellsManager(ViewCellsTree *viewCellsTree, KdTree *tree);
|
---|
[440] | 985 |
|
---|
[574] | 986 | int ConstructSubdivision(const ObjectContainer &objects,
|
---|
[1686] | 987 | const VssRayContainer &rays);
|
---|
[440] | 988 |
|
---|
[478] | 989 | int CastLineSegment(const Vector3 &origin,
|
---|
| 990 | const Vector3 &termination,
|
---|
| 991 | ViewCellContainer &viewcells);
|
---|
[440] | 992 |
|
---|
| 993 | int PostProcess(const ObjectContainer &objects,
|
---|
[466] | 994 | const VssRayContainer &rays);
|
---|
[440] | 995 |
|
---|
| 996 | void Visualize(const ObjectContainer &objects,
|
---|
[466] | 997 | const VssRayContainer &sampleRays);
|
---|
[440] | 998 |
|
---|
| 999 | int GetType() const;
|
---|
| 1000 |
|
---|
| 1001 | bool ViewCellsConstructed() const;
|
---|
| 1002 |
|
---|
[580] | 1003 | ViewCell *GenerateViewCell(Mesh *mesh) const;
|
---|
[440] | 1004 |
|
---|
[452] | 1005 | /** Prints out statistics of this approach.
|
---|
| 1006 | */
|
---|
[503] | 1007 | // virtual void PrintStatistics(ostream &s) const;
|
---|
[1416] | 1008 | ViewCell *GetViewCell(const Vector3 &point, const bool active = false) const
|
---|
| 1009 | { return NULL; }
|
---|
[452] | 1010 |
|
---|
[503] | 1011 | float GetProbability(ViewCell *viewCell);
|
---|
[609] | 1012 |
|
---|
[503] | 1013 | void CreateMesh(ViewCell *vc);
|
---|
| 1014 |
|
---|
[1686] | 1015 | void ExportViewCellGeometry(Exporter *exporter,
|
---|
| 1016 | ViewCell *vc,
|
---|
| 1017 | const AxisAlignedBox3 *box,
|
---|
| 1018 | const AxisAlignedPlane *clipPlane = NULL) const;
|
---|
[547] | 1019 |
|
---|
[1416] | 1020 |
|
---|
[591] | 1021 | void CollectMergeCandidates(const VssRayContainer &rays,
|
---|
| 1022 | vector<MergeCandidate> &candidates);
|
---|
[580] | 1023 |
|
---|
[1686] | 1024 | void ExportSingleViewCells(const ObjectContainer &objects,
|
---|
| 1025 | const int maxViewCells,
|
---|
| 1026 | const bool sortViewCells,
|
---|
| 1027 | const bool exportPvs,
|
---|
| 1028 | const bool exportRays,
|
---|
| 1029 | const int maxRays,
|
---|
[2394] | 1030 | const string &prefix,
|
---|
[1686] | 1031 | VssRayContainer *visRays = NULL);
|
---|
[752] | 1032 |
|
---|
[1977] | 1033 | bool LineSegmentIntersects(const Vector3 &origin,
|
---|
| 1034 | const Vector3 &termination,
|
---|
| 1035 | ViewCell *viewCell);
|
---|
| 1036 |
|
---|
[440] | 1037 | protected:
|
---|
| 1038 |
|
---|
[580] | 1039 | /** Collects view cells from a hierarchy.
|
---|
| 1040 | */
|
---|
[480] | 1041 | void CollectViewCells();
|
---|
[580] | 1042 |
|
---|
[480] | 1043 | KdNode *GetNodeForPvs(KdLeaf *leaf);
|
---|
[440] | 1044 |
|
---|
[1570] | 1045 | ////////////////////////////////////////
|
---|
[440] | 1046 |
|
---|
[480] | 1047 | /// the BSP tree.
|
---|
| 1048 | KdTree *mKdTree;
|
---|
[440] | 1049 |
|
---|
[480] | 1050 | /// depth of the KD tree nodes with represent the view cells
|
---|
| 1051 | int mKdPvsDepth;
|
---|
[938] | 1052 |
|
---|
| 1053 |
|
---|
[440] | 1054 | };
|
---|
| 1055 |
|
---|
[1570] | 1056 |
|
---|
| 1057 | /** Manages different higher order operations on the view cells.
|
---|
[442] | 1058 | */
|
---|
| 1059 | class VspBspViewCellsManager: public ViewCellsManager
|
---|
| 1060 | {
|
---|
| 1061 |
|
---|
| 1062 | public:
|
---|
| 1063 |
|
---|
[1264] | 1064 | VspBspViewCellsManager(ViewCellsTree *viewCellsTree, VspBspTree *tree);
|
---|
[475] | 1065 | ~VspBspViewCellsManager();
|
---|
[442] | 1066 |
|
---|
[574] | 1067 | int ConstructSubdivision(const ObjectContainer &objects,
|
---|
[1686] | 1068 | const VssRayContainer &rays);
|
---|
[442] | 1069 |
|
---|
| 1070 | int PostProcess(const ObjectContainer &objects,
|
---|
[466] | 1071 | const VssRayContainer &rays);
|
---|
[442] | 1072 |
|
---|
| 1073 | void Visualize(const ObjectContainer &objects,
|
---|
[466] | 1074 | const VssRayContainer &sampleRays);
|
---|
[442] | 1075 |
|
---|
| 1076 | int GetType() const;
|
---|
| 1077 |
|
---|
| 1078 | ViewCell *GenerateViewCell(Mesh *mesh = NULL) const;
|
---|
| 1079 |
|
---|
| 1080 | bool ViewCellsConstructed() const;
|
---|
[468] | 1081 |
|
---|
| 1082 | int CastLineSegment(const Vector3 &origin,
|
---|
| 1083 | const Vector3 &termination,
|
---|
| 1084 | ViewCellContainer &viewcells);
|
---|
[452] | 1085 |
|
---|
[471] | 1086 | float GetProbability(ViewCell *viewCell);
|
---|
[479] | 1087 |
|
---|
[879] | 1088 | ViewCell *GetViewCell(const Vector3 &point, const bool active = false) const;
|
---|
[477] | 1089 |
|
---|
[487] | 1090 | bool GetViewPoint(Vector3 &viewPoint) const;
|
---|
| 1091 |
|
---|
[490] | 1092 | bool ViewPointValid(const Vector3 &viewPoint) const;
|
---|
[503] | 1093 |
|
---|
| 1094 | void CreateMesh(ViewCell *vc);
|
---|
| 1095 |
|
---|
[1686] | 1096 | bool ExportViewCells(const string filename,
|
---|
| 1097 | const bool exportPvs,
|
---|
| 1098 | const ObjectContainer &objects);
|
---|
[508] | 1099 |
|
---|
[532] | 1100 | int CastBeam(Beam &beam);
|
---|
[1416] | 1101 |
|
---|
[1686] | 1102 | void ExportViewCellGeometry(Exporter *exporter,
|
---|
| 1103 | ViewCell *vc,
|
---|
| 1104 | const AxisAlignedBox3 *box,
|
---|
| 1105 | const AxisAlignedPlane *clipPlane = NULL) const;
|
---|
[532] | 1106 |
|
---|
[547] | 1107 |
|
---|
[555] | 1108 | void Finalize(ViewCell *viewCell, const bool createMesh);
|
---|
[551] | 1109 |
|
---|
[1686] | 1110 | void CollectMergeCandidates(const VssRayContainer &rays,
|
---|
| 1111 | vector<MergeCandidate> &candidates);
|
---|
[580] | 1112 |
|
---|
[1686] | 1113 | void ExportSingleViewCells(const ObjectContainer &objects,
|
---|
| 1114 | const int maxViewCells,
|
---|
| 1115 | const bool sortViewCells,
|
---|
| 1116 | const bool exportPvs,
|
---|
| 1117 | const bool exportRays,
|
---|
| 1118 | const int maxRays,
|
---|
[2394] | 1119 | const string &prefix,
|
---|
[1686] | 1120 | VssRayContainer *visRays = NULL);
|
---|
[1570] | 1121 |
|
---|
[1920] | 1122 |
|
---|
[1977] | 1123 | bool LineSegmentIntersects(const Vector3 &origin,
|
---|
| 1124 | const Vector3 &termination,
|
---|
| 1125 | ViewCell *viewCell);
|
---|
| 1126 |
|
---|
[442] | 1127 | protected:
|
---|
[475] | 1128 |
|
---|
[1686] | 1129 | int ComputeBoxIntersections(const AxisAlignedBox3 &box,
|
---|
| 1130 | ViewCellContainer &viewCells) const;
|
---|
[651] | 1131 |
|
---|
[1021] | 1132 | /** Merges view cells according to some criteria
|
---|
[442] | 1133 | */
|
---|
[508] | 1134 | void MergeViewCells(const VssRayContainer &rays,
|
---|
| 1135 | const ObjectContainer &objects);
|
---|
[503] | 1136 |
|
---|
[564] | 1137 | void RefineViewCells(const VssRayContainer &rays, const ObjectContainer &objects);
|
---|
[442] | 1138 |
|
---|
[480] | 1139 | void CollectViewCells();
|
---|
| 1140 |
|
---|
[482] | 1141 | /** Returns maximal depth difference of view cell
|
---|
| 1142 | leaves in tree.
|
---|
| 1143 | */
|
---|
| 1144 | int GetMaxTreeDiff(ViewCell *vc) const;
|
---|
| 1145 |
|
---|
[752] | 1146 | /** Prepare view cells for use after loading them from disc.
|
---|
| 1147 | */
|
---|
[577] | 1148 | void PrepareLoadedViewCells();
|
---|
| 1149 |
|
---|
[752] | 1150 | /** Constructs merge hierarchy which corresponds to the spatial hierarchy.
|
---|
| 1151 | */
|
---|
[650] | 1152 | ViewCell *ConstructSpatialMergeTree(BspNode *root);
|
---|
[649] | 1153 |
|
---|
[979] | 1154 | /// HACK for testing visibility filter functionality
|
---|
[697] | 1155 | void TestFilter(const ObjectContainer &objects);
|
---|
| 1156 |
|
---|
[979] | 1157 | /** Visualization of the pvs difference to exact visubility using
|
---|
| 1158 | from point queries.
|
---|
| 1159 | */
|
---|
| 1160 | void VisualizeWithFromPointQueries();
|
---|
[697] | 1161 |
|
---|
[991] | 1162 | /** Evaluate from point queries for the current scene.
|
---|
| 1163 | */
|
---|
| 1164 | void EvalFromPointQueries();
|
---|
[979] | 1165 |
|
---|
[1021] | 1166 | /** Exports visualization of the BSP splits.
|
---|
| 1167 | */
|
---|
| 1168 | void ExportSplits(const ObjectContainer &objects,
|
---|
| 1169 | const VssRayContainer &rays);
|
---|
[991] | 1170 |
|
---|
[1686] | 1171 |
|
---|
| 1172 | /////////////////////////
|
---|
| 1173 |
|
---|
[442] | 1174 | /// the view space partition BSP tree.
|
---|
| 1175 | VspBspTree *mVspBspTree;
|
---|
| 1176 |
|
---|
[591] | 1177 |
|
---|
[442] | 1178 | private:
|
---|
| 1179 |
|
---|
[1021] | 1180 | /** test if subdivision is valid in terms of volume / area.
|
---|
[442] | 1181 | */
|
---|
[1021] | 1182 | void TestSubdivision();
|
---|
| 1183 | };
|
---|
[442] | 1184 |
|
---|
[1021] | 1185 |
|
---|
[2353] | 1186 |
|
---|
| 1187 | /** Manages different higher order operations on the view cells.
|
---|
[1021] | 1188 | */
|
---|
| 1189 | class VspOspViewCellsManager: public ViewCellsManager
|
---|
| 1190 | {
|
---|
[1740] | 1191 | friend class ViewCellsParseHandlers;
|
---|
[2542] | 1192 | friend class ViewCellsManager;
|
---|
[1977] | 1193 |
|
---|
[1021] | 1194 | public:
|
---|
| 1195 |
|
---|
[2542] | 1196 | /** This version takes a view cells tree and a hierarchy
|
---|
| 1197 | as input.
|
---|
| 1198 | */
|
---|
[2113] | 1199 | VspOspViewCellsManager(ViewCellsTree *vcTree,
|
---|
| 1200 | const string &hierarchyType);
|
---|
[1278] | 1201 |
|
---|
[1021] | 1202 | ~VspOspViewCellsManager();
|
---|
| 1203 |
|
---|
| 1204 | int ConstructSubdivision(const ObjectContainer &objects,
|
---|
| 1205 | const VssRayContainer &rays);
|
---|
| 1206 |
|
---|
| 1207 | int PostProcess(const ObjectContainer &objects,
|
---|
| 1208 | const VssRayContainer &rays);
|
---|
| 1209 |
|
---|
[1686] | 1210 | void Visualize(const ObjectContainer &objects,
|
---|
[1021] | 1211 | const VssRayContainer &sampleRays);
|
---|
| 1212 |
|
---|
| 1213 | int GetType() const;
|
---|
| 1214 |
|
---|
| 1215 | ViewCell *GenerateViewCell(Mesh *mesh = NULL) const;
|
---|
| 1216 |
|
---|
[2539] | 1217 | virtual Intersectable *GetIntersectable(const VssRay &ray,
|
---|
| 1218 | const bool isTermination) const;
|
---|
[1743] | 1219 |
|
---|
[1021] | 1220 | bool ViewCellsConstructed() const;
|
---|
| 1221 |
|
---|
| 1222 | int CastLineSegment(const Vector3 &origin,
|
---|
| 1223 | const Vector3 &termination,
|
---|
| 1224 | ViewCellContainer &viewcells);
|
---|
| 1225 |
|
---|
[1977] | 1226 | bool LineSegmentIntersects(const Vector3 &origin,
|
---|
| 1227 | const Vector3 &termination,
|
---|
| 1228 | ViewCell *viewCell);
|
---|
| 1229 |
|
---|
[1021] | 1230 | float GetProbability(ViewCell *viewCell);
|
---|
| 1231 |
|
---|
[2113] | 1232 | ViewCell *GetViewCell(const Vector3 &point,
|
---|
| 1233 | const bool active = false) const;
|
---|
[1021] | 1234 |
|
---|
| 1235 | bool GetViewPoint(Vector3 &viewPoint) const;
|
---|
| 1236 |
|
---|
| 1237 | bool ViewPointValid(const Vector3 &viewPoint) const;
|
---|
| 1238 |
|
---|
| 1239 | void CreateMesh(ViewCell *vc);
|
---|
| 1240 |
|
---|
[1027] | 1241 | bool ExportViewCells(const string filename,
|
---|
| 1242 | const bool exportPvs,
|
---|
| 1243 | const ObjectContainer &objects);
|
---|
[1021] | 1244 |
|
---|
| 1245 | int CastBeam(Beam &beam);
|
---|
| 1246 |
|
---|
| 1247 | void Finalize(ViewCell *viewCell, const bool createMesh);
|
---|
| 1248 |
|
---|
[1666] | 1249 | void ExportSingleViewCells(const ObjectContainer &objects,
|
---|
| 1250 | const int maxViewCells,
|
---|
| 1251 | const bool sortViewCells,
|
---|
| 1252 | const bool exportPvs,
|
---|
| 1253 | const bool exportRays,
|
---|
| 1254 | const int maxRays,
|
---|
[2394] | 1255 | const string &prefix,
|
---|
[1666] | 1256 | VssRayContainer *visRays = NULL);
|
---|
[2539] | 1257 | /** See parent class.
|
---|
| 1258 | */
|
---|
[2124] | 1259 | virtual void FinalizeViewCells(const bool createMesh);
|
---|
| 1260 |
|
---|
[2543] | 1261 | bool ExportViewCellsBinary(const string filename,
|
---|
[2539] | 1262 | const bool exportPvs,
|
---|
| 1263 | const ObjectContainer &objects);
|
---|
| 1264 |
|
---|
[2332] | 1265 | #if TEST_PACKETS
|
---|
| 1266 |
|
---|
[2353] | 1267 | float ComputeSampleContributions(const VssRayContainer &rays,
|
---|
| 1268 | const bool addContributions,
|
---|
| 1269 | const bool storeViewCells,
|
---|
| 1270 | const bool useHitObjects = false);
|
---|
[2332] | 1271 | #endif
|
---|
| 1272 |
|
---|
[2539] | 1273 |
|
---|
[1021] | 1274 | protected:
|
---|
[1180] | 1275 |
|
---|
[2539] | 1276 | /** View cells manager taking a view cells tree and a hierarchy as input.
|
---|
| 1277 | */
|
---|
[1740] | 1278 | VspOspViewCellsManager(ViewCellsTree *vcTree, HierarchyManager *hm);
|
---|
| 1279 |
|
---|
[1709] | 1280 | virtual void EvalViewCellPartition();
|
---|
[1027] | 1281 | /** Exports view cell geometry.
|
---|
| 1282 | */
|
---|
[1666] | 1283 | void ExportViewCellGeometry(Exporter *exporter,
|
---|
| 1284 | ViewCell *vc,
|
---|
| 1285 | const AxisAlignedBox3 *box,
|
---|
| 1286 | const AxisAlignedPlane *clipPlane = NULL) const;
|
---|
[1027] | 1287 |
|
---|
[1666] | 1288 | int ComputeBoxIntersections(const AxisAlignedBox3 &box,
|
---|
| 1289 | ViewCellContainer &viewCells) const;
|
---|
[1021] | 1290 |
|
---|
| 1291 | void CollectViewCells();
|
---|
| 1292 |
|
---|
[1845] | 1293 | virtual void CompressViewCells();
|
---|
[1021] | 1294 | /** Prepare view cells for use after loading them from disc.
|
---|
| 1295 | */
|
---|
| 1296 | void PrepareLoadedViewCells();
|
---|
| 1297 | /** Constructs merge hierarchy which corresponds to the spatial hierarchy.
|
---|
| 1298 | */
|
---|
| 1299 | ViewCell *ConstructSpatialMergeTree(VspNode *root);
|
---|
[1074] | 1300 | /** Exports visualization of the PVS.
|
---|
[442] | 1301 | */
|
---|
[1666] | 1302 | void ExportPvs(const ObjectContainer &objects, const VssRayContainer &rays);
|
---|
[1740] | 1303 | /** Returns a hierarchy manager of the given name.
|
---|
| 1304 | */
|
---|
| 1305 | static HierarchyManager *CreateHierarchyManager(const string &name);
|
---|
[1887] | 1306 | /** collect objects intersecting a given spatial box
|
---|
[1845] | 1307 | */
|
---|
| 1308 | virtual void CollectObjects(const AxisAlignedBox3 &box, ObjectContainer &objects);
|
---|
[2539] | 1309 | /** Update the cost of pvss for hierarchy objects.
|
---|
| 1310 | */
|
---|
| 1311 | float UpdateObjectCosts();
|
---|
[1737] | 1312 |
|
---|
[2539] | 1313 |
|
---|
| 1314 | ////////////////
|
---|
| 1315 |
|
---|
| 1316 | /** Fast view cell loader in binary mode.
|
---|
| 1317 | */
|
---|
[2547] | 1318 | friend ViewCellsManager *ViewCellsManager::
|
---|
| 1319 | LoadViewCellsBinary(const std::string &filename,
|
---|
| 1320 | ObjectContainer &pvsObjects,
|
---|
| 1321 | bool finalizeViewCells,
|
---|
| 1322 | BoundingBoxConverter *bconverter);
|
---|
[2539] | 1323 |
|
---|
[2547] | 1324 |
|
---|
[2539] | 1325 | /** Print statistics about the view cells compression.
|
---|
| 1326 | */
|
---|
[2530] | 1327 | static void PrintCompressionStats(HierarchyManager *hm, const int pvsEntries);
|
---|
[1887] | 1328 |
|
---|
| 1329 |
|
---|
[2530] | 1330 | ////////////////////
|
---|
| 1331 |
|
---|
[2547] | 1332 | /// if we the objects are compressed after evaluation
|
---|
| 1333 | /// this makes only sense for testing purpose
|
---|
[1887] | 1334 | bool mCompressObjects;
|
---|
[2547] | 1335 | /// hierarchy manager managing view space / object subdivision.
|
---|
[1027] | 1336 | HierarchyManager *mHierarchyManager;
|
---|
[442] | 1337 | };
|
---|
| 1338 |
|
---|
[575] | 1339 |
|
---|
[860] | 1340 | }
|
---|
| 1341 |
|
---|
[440] | 1342 | #endif
|
---|