[372] | 1 | #ifndef _ViewCell_H__
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| 2 | #define _ViewCell_H__
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| 3 |
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| 4 | #include "Mesh.h"
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| 5 | #include "Containers.h"
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| 6 | #include "Ray.h"
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[462] | 7 | #include "Statistics.h"
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[608] | 8 | #include "Material.h"
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[955] | 9 | #include "gzstream.h"
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[469] | 10 |
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[1010] | 11 |
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[860] | 12 | namespace GtpVisibilityPreprocessor {
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| 13 |
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[469] | 14 | struct Triangle3;
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| 15 |
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[372] | 16 | class BspInterior;
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| 17 | class BspPvs;
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| 18 | class BspLeaf;
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[1008] | 19 | class VspLeaf;
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[469] | 20 | class KdLeaf;
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[580] | 21 | class ViewCellInterior;
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| 22 | class MergeCandidate;
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| 23 | class ViewCellsManager;
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[881] | 24 | class ViewCellLeaf;
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[372] | 25 |
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[955] | 26 |
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[1264] | 27 |
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[479] | 28 | /** Statistics for a view cell partition.
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| 29 | */
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| 30 |
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| 31 | class ViewCellsStatistics: public StatisticsBase
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| 32 | {
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| 33 | public:
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| 34 |
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| 35 | /// number of view cells
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| 36 | int viewCells;
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| 37 | /// size of the PVS
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[613] | 38 | int pvsSize;
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[479] | 39 | /// largest PVS of all view cells
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| 40 | int maxPvs;
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| 41 | /// smallest PVS of all view cells
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| 42 | int minPvs;
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| 43 | /// view cells with empty PVS
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| 44 | int emptyPvs;
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| 45 | /// number of leaves covering the view space
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| 46 | int leaves;
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| 47 | /// largest number of leaves covered by one view cell
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| 48 | int maxLeaves;
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[1667] | 49 | /// number of invalid view cells
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[564] | 50 | int invalid;
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| 51 |
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[479] | 52 | // Constructor
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| 53 | ViewCellsStatistics()
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| 54 | {
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| 55 | Reset();
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| 56 | }
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| 57 |
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| 58 | double AvgLeaves() const {return (double)leaves / (double)viewCells;};
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[613] | 59 | double AvgPvs() const {return (double)pvsSize / (double)viewCells;};
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[479] | 60 |
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| 61 | void Reset()
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| 62 | {
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| 63 | viewCells = 0;
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[613] | 64 | pvsSize = 0;
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[479] | 65 | maxPvs = 0;
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| 66 |
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| 67 | minPvs = 999999;
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| 68 | emptyPvs = 0;
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| 69 | leaves = 0;
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| 70 | maxLeaves = 0;
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[564] | 71 | invalid = 0;
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[479] | 72 | }
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| 73 |
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| 74 | void Print(ostream &app) const;
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| 75 |
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| 76 | friend ostream &operator<<(ostream &s, const ViewCellsStatistics &stat)
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| 77 | {
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| 78 | stat.Print(s);
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| 79 | return s;
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| 80 | }
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| 81 | };
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| 82 |
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[580] | 83 |
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[372] | 84 | /**
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[1667] | 85 | A view cell. View cells are regions in space. The visibility informations,
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| 86 | i.e., the primitives seen by the view cell are stored in a PVs.
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| 87 | A view cell can be represented in many different ways, e.g.,
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| 88 | a mesh representation.
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[372] | 89 | */
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| 90 | class ViewCell: public MeshInstance
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| 91 | {
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[752] | 92 | friend class ViewCellsTree;
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| 93 | friend class ViewCellsManager;
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| 94 |
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[372] | 95 | public:
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| 96 | ViewCell();
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[471] | 97 |
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[372] | 98 | /** Constructor taking a mesh representing the shape of the viewcell.
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| 99 | */
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| 100 | ViewCell(Mesh *mesh);
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[462] | 101 |
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[469] | 102 | /** Default destructor.
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| 103 | */
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[1551] | 104 | virtual ~ViewCell();
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[471] | 105 | /** Returns Pvs.
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[372] | 106 | */
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[469] | 107 | const ObjectPvs &GetPvs() const;
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[1002] | 108 | /** Returns pvs.
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| 109 | */
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[469] | 110 | ObjectPvs &GetPvs();
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[1002] | 111 | /** Completely substitutes the pvs.
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| 112 | */
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[880] | 113 | void SetPvs(const ObjectPvs &pvs);
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[752] | 114 | /** Type of view cells.
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| 115 | */
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[372] | 116 | int Type() const;
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| 117 | /** Adds a passing ray to the passing ray container.
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| 118 | */
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[471] | 119 | void AddPassingRay(const Ray &ray, const int contributions);
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[469] | 120 | /** Returns volume of the view cell.
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| 121 | */
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[478] | 122 | float GetVolume() const;
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| 123 | /** Returns area of the view cell.
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[469] | 124 | */
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[478] | 125 | float GetArea() const;
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| 126 | /** Sets the volume of the view cell.
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| 127 | */
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| 128 | void SetVolume(float volume);
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| 129 | /** Sets the area of the view cell.
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| 130 | */
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| 131 | void SetArea(float area);
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[580] | 132 | /** if this view cell is the root of a view cell hierarchy
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| 133 | */
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| 134 | bool IsRoot() const;
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| 135 | /** Returns parent view cell.
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| 136 | */
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| 137 | ViewCellInterior *GetParent() const;
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[1002] | 138 | /** Sets parent of this view cell.
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| 139 | */
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| 140 | void SetParent(ViewCellInterior *parent);
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[503] | 141 | /** Sets the mesh for this view cell.
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| 142 | */
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| 143 | void SetMesh(Mesh *mesh);
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| 144 |
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[1002] | 145 | /** Sets this view cell to be a valid view cell according to some criteria.
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| 146 | */
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[547] | 147 | void SetValid(const bool valid);
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[1002] | 148 | /** Returns true if this view cell is considered to be valid according to
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| 149 | some criteria.
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| 150 | */
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[547] | 151 | bool GetValid() const;
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| 152 |
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[728] | 153 | /** Returns estimated render cost of this view cell.
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| 154 | */
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| 155 | float GetRenderCost() const;
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[580] | 156 |
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[752] | 157 | /** set color for visiualizations.
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| 158 | */
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| 159 | void SetColor(const RgbColor &color);
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[580] | 160 |
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[752] | 161 | /** get color for visualuzations.
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| 162 | */
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| 163 | RgbColor GetColor() const;
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[580] | 164 |
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[1002] | 165 | /** Adds a sample to the pvs.
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| 166 | @param sample the sample to be added
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| 167 | @param pdf a continuos measure of visibility
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| 168 | @param contribution returns the contribution of this sample to the pvs
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| 169 | */
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| 170 | bool AddPvsSample(Intersectable *sample, const float pdf, float &contribution);
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[608] | 171 |
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[580] | 172 | /// Rays piercing this view cell.
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[1284] | 173 | //RayContainer mPiercingRays;
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[580] | 174 |
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| 175 | /** if this is a view cell correspending to a leaf in a hierarchy.
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| 176 | */
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| 177 | virtual bool IsLeaf() const = 0;
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| 178 |
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[752] | 179 | static bool SmallerPvs(const ViewCell *a, const ViewCell *b)
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| 180 | {
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[997] | 181 | // HACK: take scalar value because pvs may not have been stored properly
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| 182 | #if 1
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| 183 | return a->mPvsSize < b->mPvsSize;
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| 184 | #else
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[1707] | 185 | return a->GetPvs().EvalPvsCost() < b->GetPvs().EvalPvsCost();
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[997] | 186 | #endif
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| 187 | }
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[569] | 188 |
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[997] | 189 | static bool SmallerRenderCost(const ViewCell *a, const ViewCell *b)
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| 190 | {
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| 191 | return a->GetRenderCost() < b->GetRenderCost();
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| 192 | }
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[580] | 193 |
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[997] | 194 | static bool LargerRenderCost(const ViewCell *a, const ViewCell *b)
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| 195 | {
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| 196 | return a->GetRenderCost() > b->GetRenderCost();
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| 197 | }
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[801] | 198 |
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[1002] | 199 | /** Sets merge cost used for merging this view cell from other cells.
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| 200 | @hack The function is available for leaves also to have a common interface,
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| 201 | but it should be less than zero for leaves.
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| 202 | */
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[600] | 203 | void SetMergeCost(const float mergeCost);
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[997] | 204 |
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[1002] | 205 | /** Returns merge cost needed to merge this leaf from other cells.
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| 206 | @hack The function is available for leaves also to have a common interface,
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| 207 | but it should be less than zero for leaves.
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| 208 | */
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[600] | 209 | float GetMergeCost() const;
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[997] | 210 |
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[1002] | 211 |
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[1551] | 212 | //////////
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[1297] | 213 | //-- mailing stuff
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[1002] | 214 |
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[997] | 215 | static void NewMail(const int reserve = 1)
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| 216 | {
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[580] | 217 | sMailId += sReservedMailboxes;
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| 218 | sReservedMailboxes = reserve;
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| 219 | }
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[997] | 220 |
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[580] | 221 | void Mail() { mMailbox = sMailId; }
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| 222 | bool Mailed() const { return mMailbox == sMailId; }
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| 223 |
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| 224 | void Mail(const int mailbox) { mMailbox = sMailId + mailbox; }
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| 225 | bool Mailed(const int mailbox) const { return mMailbox == sMailId + mailbox; }
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| 226 |
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[1145] | 227 | int IncMail() { return ++ mMailbox - sMailId; }
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[580] | 228 |
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| 229 |
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| 230 | // last mail id -> warning not thread safe!
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| 231 | // both mailId and mailbox should be unique for each thread!!!
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| 232 | static int sMailId;
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| 233 | static int sReservedMailboxes;
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[609] | 234 |
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[1545] | 235 |
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[372] | 236 | protected:
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| 237 |
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[1002] | 238 | /// parent view cell in the view cell hierarchy
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| 239 | ViewCellInterior *mParent;
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[372] | 240 | /// the potentially visible objects
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[469] | 241 | ObjectPvs mPvs;
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[1160] | 242 | /// the volume of this view cell
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[469] | 243 | float mVolume;
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[1545] | 244 | /// the area of this view cell
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[478] | 245 | float mArea;
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[1160] | 246 | /// the cost that were paid for merging this view cells from two others.
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[600] | 247 | float mMergeCost;
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[1160] | 248 | /// if the view cell is valid view space
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[547] | 249 | bool mValid;
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[881] | 250 | /// color used for consistent visualization
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[660] | 251 | RgbColor mColor;
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[1002] | 252 | /// store pvs size, used for evaluation purpose when pvss are stored only in the leaves
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[752] | 253 | int mPvsSize;
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[1161] | 254 | /** stores number of entries in pvs
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| 255 | this variable has the same value as mPvsSize for object pvs,
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| 256 | but usually not for kd cell based pvs
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| 257 | */
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[1160] | 258 | int mEntriesInPvs;
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[1297] | 259 | /** if the pvs size scalar (+ entries into pvs)
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| 260 | is up to date and corresponding to the real pvs size
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| 261 | */
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[752] | 262 | bool mPvsSizeValid;
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[372] | 263 | };
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| 264 |
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[580] | 265 |
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| 266 | class ViewCellInterior: public ViewCell
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| 267 | {
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[752] | 268 | friend class ViewCellsManager;
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[1284] | 269 |
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[580] | 270 | public:
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| 271 | ViewCellInterior();
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| 272 | ~ViewCellInterior();
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| 273 |
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| 274 | ViewCellInterior(Mesh *mesh);
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| 275 |
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| 276 | /** Sets pointer from parent to child and vice versa.
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| 277 | */
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| 278 | void SetupChildLink(ViewCell *l);
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[1286] | 279 | void ReplaceChildLink(ViewCell *prev, ViewCell *cur);
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| 280 |
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[586] | 281 | void RemoveChildLink(ViewCell *l);
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[580] | 282 | bool IsLeaf() const;
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| 283 |
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[1284] | 284 | void SetCost(const float c) {
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| 285 | mCost = c;
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| 286 | }
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| 287 |
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| 288 | float GetCost() const {
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| 289 | return mCost;
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| 290 | }
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[608] | 291 |
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[1284] | 292 | ViewCellContainer mChildren;
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| 293 |
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[608] | 294 | protected:
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| 295 | /** overall cost resulting from the merge */
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| 296 | float mCost;
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[580] | 297 | };
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| 298 |
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[881] | 299 |
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[469] | 300 | /**
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[881] | 301 | Leaf of the view cell.
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[469] | 302 | */
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[580] | 303 | class ViewCellLeaf: public ViewCell
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[366] | 304 | {
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| 305 | public:
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[881] | 306 | ViewCellLeaf() { mActiveViewCell = this; }
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| 307 | ViewCellLeaf(Mesh *mesh):
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| 308 | ViewCell(mesh) { mActiveViewCell = this; }
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[469] | 309 |
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[881] | 310 | bool IsLeaf() const
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| 311 | {
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| 312 | return true;
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| 313 | }
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| 314 |
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[1551] | 315 | /** Returns active view cell, i.e. this view cell or
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| 316 | a parent view cell which is set as active view cell.
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[881] | 317 | */
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| 318 | ViewCell *GetActiveViewCell() const
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| 319 | { return mActiveViewCell; }
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| 320 |
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| 321 | /** Sets this view cell to be an active view cell.
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| 322 | */
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| 323 | void SetActiveViewCell(ViewCell *vc)
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| 324 | { mActiveViewCell = vc;}
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[605] | 325 |
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[997] | 326 | /** points to the currently active view cell. This is the
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| 327 | view cell representing the current brach.
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| 328 | */
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[881] | 329 | ViewCell *mActiveViewCell;
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| 330 | };
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[479] | 331 |
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[1121] | 332 | /** Leaf of the view cell hierarchy corresponding
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| 333 | to a leaf in a spatial hierarchy.
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[881] | 334 | */
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| 335 | template<typename T>
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| 336 | class HierarchyLeafViewCell: public ViewCellLeaf
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| 337 | {
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| 338 | public:
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| 339 |
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| 340 | HierarchyLeafViewCell<T>(): ViewCellLeaf() { }
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| 341 | HierarchyLeafViewCell<T>(Mesh *mesh):
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| 342 | ViewCellLeaf(mesh) { }
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| 343 |
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[580] | 344 | bool IsLeaf() const
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| 345 | {
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| 346 | return true;
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| 347 | }
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| 348 |
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[1551] | 349 | /// Leaves of some hierarchy which contains this view cell.
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| 350 | vector<T> mLeaves;
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[469] | 351 | };
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| 352 |
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[479] | 353 |
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[1010] | 354 | typedef HierarchyLeafViewCell<VspLeaf *> VspViewCell;
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[881] | 355 | typedef HierarchyLeafViewCell<BspLeaf *> BspViewCell;
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| 356 | typedef HierarchyLeafViewCell<KdLeaf *> KdViewCell;
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[469] | 357 |
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[366] | 358 |
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[580] | 359 |
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[1008] | 360 |
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[580] | 361 | class ViewCellsTree
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| 362 | {
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[600] | 363 | friend class ViewCellsManager;
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[1263] | 364 | friend class ViewCellsParseHandlers;
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[752] | 365 |
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[580] | 366 | public:
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[1264] | 367 | ViewCellsTree();
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[1004] | 368 | /** View cells tree constructor taking a view cell mnanager as parameter
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[997] | 369 | */
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[1004] | 370 | ViewCellsTree(ViewCellsManager *vcm);
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[580] | 371 | ~ViewCellsTree();
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| 372 |
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| 373 | /** Returns number of leaves this view cell consists of.
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| 374 | */
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[736] | 375 | int GetNumInitialViewCells(ViewCell *vc) const;
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[580] | 376 |
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| 377 | /** Collects leaves corresponding to a view cell.
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| 378 | */
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| 379 | void CollectLeaves(ViewCell *vc, ViewCellContainer &leaves) const;
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| 380 |
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| 381 | /** Merges view cells according to some cost heuristics.
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| 382 | */
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| 383 | int ConstructMergeTree(const VssRayContainer &rays, const ObjectContainer &objects);
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| 384 |
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| 385 | /** Refines view cells using shuffling, i.e., border leaves
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| 386 | of two view cells are exchanged if the resulting view cells
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| 387 | are tested to be "better" than the old ones.
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| 388 | @returns number of refined view cells
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| 389 | */
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| 390 | int RefineViewCells(const VssRayContainer &rays, const ObjectContainer &objects);
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[651] | 391 |
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| 392 | /** Assign colors to the viewcells so that they can be renderered interactively without
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[997] | 393 | color flickering.
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| 394 | */
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[651] | 395 | void AssignRandomColors();
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[580] | 396 |
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[997] | 397 | /** Updates view cell stats for this particular view cell.
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[605] | 398 | */
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| 399 | void UpdateViewCellsStats(ViewCell *vc, ViewCellsStatistics &vcStat);
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[580] | 400 |
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[997] | 401 | /** Get costs resulting from each merge step.
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| 402 | */
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[651] | 403 | void GetCostFunction(vector<float> &costFunction);
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[1603] | 404 |
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| 405 | /** Returns storage cost resulting from each merge step.
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| 406 | */
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| 407 | void GetStorageFunction(vector<int> &storageCost);
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| 408 |
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[580] | 409 | /** Returns optimal set of view cells for a given number of view cells.
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| 410 | */
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| 411 | void CollectBestViewCellSet(ViewCellContainer &viewCells, const int numViewCells);
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| 412 |
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[581] | 413 | /** Root of view cells tree.
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| 414 | */
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[584] | 415 | ViewCell *GetRoot() const;
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[581] | 416 |
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[584] | 417 | /** Returns pvs of view cell.
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| 418 | @note pvs is returned per reference if tree is not compressed,
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| 419 | per copy else.
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| 420 | */
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| 421 | void GetPvs(ViewCell *vc, ObjectPvs &pvs) const;
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| 422 |
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[1586] | 423 | /** Returns pvs size (i.e. the number of stored objects)
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[584] | 424 | */
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[1142] | 425 | int GetPvsSize(ViewCell *vc) const;
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[584] | 426 |
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[1161] | 427 | /** Returns number of entries associated with this view cell.
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[1586] | 428 |
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| 429 | This returns the same value as the "GetPvsSize" function for object pvs
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| 430 | but most likely different values if we use object space grouping.
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| 431 | E.g., using bounding volumes.
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[584] | 432 | */
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[1161] | 433 | int GetPvsEntries(ViewCell *vc) const;
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[584] | 434 |
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[1586] | 435 | /** Returns the number of physically stored entries in the view cells sub tree.
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| 436 | This can vary based on the current storage method
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[1161] | 437 | */
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[1586] | 438 | int CountStoredPvsEntries(ViewCell *root) const;
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[1161] | 439 |
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[584] | 440 | /** Returns memory cost of this view cell.
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| 441 | */
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| 442 | float GetMemoryCost(ViewCell *vc) const;
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| 443 |
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[752] | 444 | /** Sets method of storage for view cells.
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[584] | 445 | */
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[752] | 446 | void SetViewCellsStorage(int type);
|
---|
[584] | 447 |
|
---|
[837] | 448 | /** pvs storage methods
|
---|
| 449 | */
|
---|
[752] | 450 | enum {PVS_IN_INTERIORS, COMPRESSED, PVS_IN_LEAVES};
|
---|
| 451 |
|
---|
[584] | 452 | /** If view cells in this tree have compressed pvs.
|
---|
| 453 | */
|
---|
[752] | 454 | int ViewCellsStorage() const;
|
---|
[584] | 455 |
|
---|
[660] | 456 | /** Returns active view cell that is in the path of this view cell.
|
---|
| 457 | */
|
---|
[881] | 458 | ViewCell *GetActiveViewCell(ViewCellLeaf *vc) const;
|
---|
[590] | 459 |
|
---|
[660] | 460 | /** Sets the leaves to be the currently active view cells.
|
---|
| 461 | */
|
---|
| 462 | void SetActiveSetToLeaves();
|
---|
| 463 |
|
---|
[651] | 464 | /** Propagates pvs up the tree to the root and downwards the tree.
|
---|
[610] | 465 | */
|
---|
[651] | 466 | void PropagatePvs(ViewCell *vc);
|
---|
[610] | 467 |
|
---|
[837] | 468 | /** Exports view cells to file.
|
---|
| 469 | */
|
---|
[1201] | 470 | bool Export(OUT_STREAM &stream, const bool exportPvs = false);
|
---|
[610] | 471 |
|
---|
[649] | 472 | /** Export statistics of this view cell tree.
|
---|
| 473 | */
|
---|
[660] | 474 | void ExportStats(const string &mergeStats);
|
---|
[610] | 475 |
|
---|
[650] | 476 | /** Sets root of hierarchy.
|
---|
| 477 | */
|
---|
| 478 | void SetRoot(ViewCell *root);
|
---|
| 479 |
|
---|
[651] | 480 | /** Assignes unique ids to view cells.
|
---|
| 481 | */
|
---|
| 482 | void CreateUniqueViewCellsIds();
|
---|
| 483 |
|
---|
[660] | 484 | /** Resets pvs of whole tree.
|
---|
| 485 | */
|
---|
| 486 | void ResetPvs();
|
---|
[651] | 487 |
|
---|
[1121] | 488 | /** Counts pvs of the view cell taking the kd cells into account.
|
---|
| 489 | */
|
---|
| 490 | int CountKdPvs(const ViewCellLeaf *vc) const;
|
---|
| 491 |
|
---|
[1551] | 492 | /** Sets pointer to view cells manager.
|
---|
| 493 | */
|
---|
| 494 | void SetViewCellsManager(ViewCellsManager *vcm);
|
---|
[1264] | 495 |
|
---|
[1603] | 496 | void Update();
|
---|
[1586] | 497 |
|
---|
[580] | 498 | protected:
|
---|
| 499 |
|
---|
[1586] | 500 | /** Reads the environment and sets member variables.
|
---|
| 501 | */
|
---|
[1264] | 502 | void ReadEnvironment();
|
---|
[580] | 503 |
|
---|
[997] | 504 | /////////////////////////////////////////////////////////////////
|
---|
| 505 | // merge related stuff //
|
---|
| 506 | /////////////////////////////////////////////////////////////////
|
---|
[580] | 507 |
|
---|
[729] | 508 | /** Computes render cost of the merged pvs.
|
---|
| 509 | */
|
---|
| 510 | float ComputeMergedPvsCost(const ObjectPvs &pvs1, const ObjectPvs &pvs2) const;
|
---|
| 511 |
|
---|
[580] | 512 | /** Returns cost of this leaf according to current heuristics.
|
---|
| 513 | */
|
---|
| 514 | float GetCostHeuristics(ViewCell *vc) const;
|
---|
| 515 |
|
---|
| 516 | /** Returns cost of leaf.
|
---|
| 517 | */
|
---|
| 518 | float GetRenderCost(ViewCell *vc) const;
|
---|
| 519 |
|
---|
| 520 | /** Evaluates the merge cost of this merge candidate pair.
|
---|
| 521 | */
|
---|
| 522 | void EvalMergeCost(MergeCandidate &mc) const;
|
---|
| 523 |
|
---|
| 524 | /** Variance of leaf.
|
---|
| 525 | */
|
---|
| 526 | float GetVariance(ViewCell *vc) const;
|
---|
| 527 |
|
---|
| 528 | /** Standard deviation of leaf.
|
---|
| 529 | */
|
---|
| 530 | float GetDeviation(ViewCell *vc) const;
|
---|
| 531 |
|
---|
[582] | 532 | /** Tries to set this merge candidate to valid.
|
---|
| 533 | @returns false if both view cells are the same
|
---|
[580] | 534 | */
|
---|
[582] | 535 | bool ValidateMergeCandidate(MergeCandidate &mc) const;
|
---|
[580] | 536 |
|
---|
| 537 | /** Merge view cells of leaves l1 and l2.
|
---|
| 538 | @returns difference in pvs size
|
---|
| 539 | */
|
---|
| 540 | ViewCellInterior *MergeViewCells(ViewCell *l, ViewCell *r, int &pvsDiff); //const;
|
---|
| 541 |
|
---|
| 542 | /** Shuffles, i.e. takes border leaf from view cell 1 and adds it
|
---|
| 543 | to view cell 2.
|
---|
| 544 | */
|
---|
[586] | 545 | void ShuffleLeaf(ViewCell *leaf, ViewCellInterior *vc1, ViewCellInterior *vc2) const;
|
---|
[580] | 546 |
|
---|
| 547 | /** Shuffles the leaves, i.e., tests if exchanging
|
---|
| 548 | the leaves helps in improving the view cells.
|
---|
| 549 | */
|
---|
[586] | 550 | bool ShuffleLeaves(MergeCandidate &mc) const;
|
---|
[580] | 551 |
|
---|
| 552 | /** Calculates cost for merge of view cell 1 and 2.
|
---|
| 553 | */
|
---|
[586] | 554 | float EvalShuffleCost(ViewCell *leaf,
|
---|
| 555 | ViewCellInterior *vc1,
|
---|
| 556 | ViewCellInterior *vc2) const;
|
---|
[580] | 557 |
|
---|
| 558 | /** Exports a snapshot of the merged view cells to disc.
|
---|
| 559 | */
|
---|
| 560 | void ExportMergedViewCells(ViewCellContainer &viewCells,
|
---|
| 561 | const ObjectContainer &objects,
|
---|
| 562 | const int numNewViewCells);
|
---|
| 563 |
|
---|
[997] | 564 | /** Merge queue must be reset after some time because expected value
|
---|
[580] | 565 | may not be valid.
|
---|
| 566 | */
|
---|
| 567 | void ResetMergeQueue();
|
---|
| 568 |
|
---|
[1551] | 569 | /** Updates the current cut of view cells.
|
---|
[582] | 570 | @returns number of newly merged view cells
|
---|
[580] | 571 | */
|
---|
[582] | 572 | int UpdateActiveViewCells(ViewCellContainer &viewCells);
|
---|
[580] | 573 |
|
---|
[997] | 574 | /** Helper function pullling pvs as high up in the tree as possible.
|
---|
| 575 | */
|
---|
[610] | 576 | void PullUpVisibility(ViewCellInterior *interior);
|
---|
[580] | 577 |
|
---|
[997] | 578 | /** Compress pvs of view cell and children.
|
---|
| 579 | */
|
---|
[584] | 580 | void CompressViewCellsPvs(ViewCell *root);
|
---|
[580] | 581 |
|
---|
[582] | 582 | /** Returns memory usage of view cells.
|
---|
| 583 | */
|
---|
| 584 | float GetMemUsage() const;
|
---|
[837] | 585 |
|
---|
| 586 | /** Exports single view cell.
|
---|
[610] | 587 | NOTE: should be in exporter!!
|
---|
| 588 | */
|
---|
[1201] | 589 | void ExportViewCell(ViewCell *viewCell, OUT_STREAM &stream, const bool exportPvs);
|
---|
[581] | 590 |
|
---|
[837] | 591 | /** Exports pvs of a view cell.
|
---|
| 592 | */
|
---|
[1201] | 593 | void ExportPvs(ViewCell *viewCell, OUT_STREAM &stream);
|
---|
[582] | 594 |
|
---|
[1586] | 595 | /** Counts the logical number of entries in the pvs this view cell.
|
---|
| 596 | The pvs is assumed to be stored using lossless compression.
|
---|
| 597 | */
|
---|
[1166] | 598 | int GetEntriesInPvsForCompressedStorage(ViewCell *vc) const;
|
---|
[1586] | 599 |
|
---|
| 600 | /** Computes pvs size of this view cell.
|
---|
| 601 | The pvs is assumed to be stored using lossless compression.
|
---|
| 602 | */
|
---|
[1166] | 603 | int GetPvsSizeForCompressedStorage(ViewCell *vc) const;
|
---|
[1586] | 604 |
|
---|
| 605 | /** Computes pvs size of this view cell.
|
---|
| 606 | The pvs is assumed to be stored in the leaves.
|
---|
| 607 | */
|
---|
[1166] | 608 | int GetPvsSizeForLeafStorage(ViewCell *vc) const;
|
---|
[1586] | 609 |
|
---|
| 610 | /** Counts the logical number of entries in the pvs this view cell.
|
---|
| 611 | The pvs is assumed to be stored using the leaves.
|
---|
| 612 | */
|
---|
[1166] | 613 | int GetEntriesInPvsForLeafStorage(ViewCell *vc) const;
|
---|
[610] | 614 |
|
---|
[1586] | 615 | /** Update stats for the log.
|
---|
| 616 | */
|
---|
[1653] | 617 | void UpdateStats(ofstream &stats,
|
---|
| 618 | const int pass,
|
---|
| 619 | const int viewCells,
|
---|
| 620 | const float renderCostDecrease,
|
---|
| 621 | const float totalRenderCost,
|
---|
| 622 | const int currentPvs,
|
---|
| 623 | const float expectedCost,
|
---|
| 624 | const float avgRenderCost,
|
---|
| 625 | const float deviation,
|
---|
| 626 | const int totalPvs,
|
---|
| 627 | const int entriesInPvs,
|
---|
| 628 | const float memoryCost,
|
---|
| 629 | const int pvsSizeDecr,
|
---|
| 630 | const float volume);
|
---|
[1166] | 631 |
|
---|
[1586] | 632 |
|
---|
| 633 | //////////////////////////////////////
|
---|
| 634 |
|
---|
[584] | 635 | /// if the view cell tree hold compressed pvs
|
---|
[752] | 636 | int mViewCellsStorage;
|
---|
[1551] | 637 | /// pointer to the view cells manager
|
---|
[580] | 638 | ViewCellsManager *mViewCellsManager;
|
---|
[1551] | 639 | /// the root of the view cells hierarchy
|
---|
[580] | 640 | ViewCell *mRoot;
|
---|
| 641 |
|
---|
| 642 | /// if merge visualization should be shown
|
---|
| 643 | bool mExportMergedViewCells;
|
---|
[837] | 644 | /// intermediate container of merged view cells.
|
---|
[582] | 645 | ViewCellContainer mMergedViewCells;
|
---|
[837] | 646 | /// if merged view cells are refined.
|
---|
[586] | 647 | bool mRefineViewCells;
|
---|
[580] | 648 | /// weights between variance and render cost increase (must be between zero and one)
|
---|
| 649 | float mRenderCostWeight;
|
---|
| 650 |
|
---|
| 651 | /// overall cost used to normalize cost ratio
|
---|
| 652 | float mOverallCost;
|
---|
| 653 | float mExpectedCost;
|
---|
| 654 | float mDeviation;
|
---|
| 655 | float mAvgRenderCost;
|
---|
[1551] | 656 |
|
---|
[837] | 657 | /// the area is used for pvs heuristics
|
---|
[580] | 658 | int mUseAreaForPvs;
|
---|
[1551] | 659 | /// number of currently active view cells (=current cut)
|
---|
[582] | 660 | int mNumActiveViewCells;
|
---|
[580] | 661 | /// minimal number of view cells
|
---|
| 662 | int mMergeMinViewCells;
|
---|
| 663 | /// maximal cost ratio for the merge
|
---|
| 664 | float mMergeMaxCostRatio;
|
---|
| 665 |
|
---|
| 666 | typedef priority_queue<MergeCandidate> MergeQueue;
|
---|
| 667 |
|
---|
| 668 | MergeQueue mMergeQueue;
|
---|
| 669 |
|
---|
[582] | 670 | float mMaxMemory;
|
---|
[580] | 671 |
|
---|
[938] | 672 | int mMaxMergesPerPass;
|
---|
| 673 | float mAvgCostMaxDeviation;
|
---|
[580] | 674 | };
|
---|
| 675 |
|
---|
| 676 |
|
---|
| 677 | /**
|
---|
| 678 | Candidate for leaf merging based on priority.
|
---|
| 679 | */
|
---|
| 680 | class MergeCandidate
|
---|
| 681 | {
|
---|
| 682 | friend class ViewCellsTree;
|
---|
| 683 |
|
---|
| 684 | public:
|
---|
| 685 |
|
---|
| 686 | MergeCandidate(ViewCell *l, ViewCell *r);
|
---|
| 687 |
|
---|
| 688 | /** If this merge pair is still valid.
|
---|
| 689 | */
|
---|
| 690 | bool IsValid() const;
|
---|
| 691 |
|
---|
| 692 |
|
---|
| 693 | friend bool operator<(const MergeCandidate &leafa, const MergeCandidate &leafb)
|
---|
| 694 | {
|
---|
| 695 | return leafb.GetMergeCost() < leafa.GetMergeCost();
|
---|
| 696 | }
|
---|
| 697 |
|
---|
| 698 | void SetLeftViewCell(ViewCell *l);
|
---|
| 699 | void SetRightViewCell(ViewCell *l);
|
---|
| 700 |
|
---|
| 701 | ViewCell *GetLeftViewCell() const;
|
---|
| 702 | ViewCell *GetRightViewCell() const;
|
---|
| 703 |
|
---|
[703] | 704 | /** Returns leaf view cell initially associated with this merge candidate.
|
---|
| 705 | */
|
---|
[580] | 706 | ViewCell *GetInitialLeftViewCell() const;
|
---|
[1133] | 707 | /** Returns leaf view cell initially associated with this merge candidate.
|
---|
| 708 | */
|
---|
[580] | 709 | ViewCell *GetInitialRightViewCell() const;
|
---|
| 710 |
|
---|
| 711 | /** Returns the increase of the standard deviation of this merge candidate.
|
---|
| 712 | */
|
---|
| 713 | float GetDeviationIncr() const;
|
---|
| 714 |
|
---|
| 715 | /** Merge cost of this candidate pair.
|
---|
| 716 | */
|
---|
| 717 | float GetMergeCost() const;
|
---|
| 718 |
|
---|
| 719 | /** Render cost of this candidate.
|
---|
| 720 | */
|
---|
| 721 | float GetRenderCost() const;
|
---|
| 722 |
|
---|
| 723 | static float sRenderCostWeight;
|
---|
| 724 |
|
---|
| 725 | protected:
|
---|
| 726 |
|
---|
| 727 | /// render cost increase by this merge
|
---|
| 728 | float mRenderCost;
|
---|
| 729 | /// increase / decrease of standard deviation
|
---|
| 730 | float mDeviationIncr;
|
---|
| 731 |
|
---|
| 732 | ViewCell *mLeftViewCell;
|
---|
| 733 | ViewCell *mRightViewCell;
|
---|
| 734 |
|
---|
| 735 | ViewCell *mInitialLeftViewCell;
|
---|
| 736 | ViewCell *mInitialRightViewCell;
|
---|
| 737 | };
|
---|
| 738 |
|
---|
| 739 |
|
---|
| 740 | class MergeStatistics: public StatisticsBase
|
---|
| 741 | {
|
---|
| 742 | public:
|
---|
| 743 |
|
---|
| 744 | int merged;
|
---|
| 745 | int siblings;
|
---|
| 746 | int candidates;
|
---|
| 747 | int nodes;
|
---|
| 748 |
|
---|
| 749 | int accTreeDist;
|
---|
| 750 | int maxTreeDist;
|
---|
| 751 |
|
---|
| 752 | Real collectTime;
|
---|
| 753 | Real mergeTime;
|
---|
| 754 |
|
---|
| 755 | Real overallCost;
|
---|
| 756 |
|
---|
| 757 | Real expectedRenderCost;
|
---|
| 758 | Real deviation;
|
---|
| 759 | Real heuristics;
|
---|
| 760 |
|
---|
| 761 | // Constructor
|
---|
| 762 | MergeStatistics()
|
---|
| 763 | {
|
---|
| 764 | Reset();
|
---|
| 765 | }
|
---|
| 766 |
|
---|
| 767 | double AvgTreeDist() const {return (double)accTreeDist / (double)merged;};
|
---|
| 768 |
|
---|
| 769 | void Reset()
|
---|
| 770 | {
|
---|
| 771 | nodes = 0;
|
---|
| 772 | merged = 0;
|
---|
| 773 | siblings = 0;
|
---|
| 774 | candidates = 0;
|
---|
| 775 |
|
---|
| 776 | accTreeDist = 0;
|
---|
| 777 | maxTreeDist = 0;
|
---|
| 778 |
|
---|
| 779 | collectTime = 0;
|
---|
| 780 | mergeTime = 0;
|
---|
| 781 | overallCost = 0;
|
---|
| 782 |
|
---|
| 783 | expectedRenderCost = 0;
|
---|
| 784 | deviation = 0;
|
---|
| 785 | heuristics = 0;
|
---|
| 786 |
|
---|
| 787 | }
|
---|
| 788 |
|
---|
| 789 | void Print(ostream &app) const;
|
---|
| 790 |
|
---|
| 791 | friend ostream &operator<<(ostream &s, const MergeStatistics &stat)
|
---|
| 792 | {
|
---|
| 793 | stat.Print(s);
|
---|
| 794 | return s;
|
---|
| 795 | }
|
---|
| 796 | };
|
---|
| 797 |
|
---|
[860] | 798 | }
|
---|
| 799 |
|
---|
[372] | 800 | #endif
|
---|