[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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[1004] | 25 | //class Environment;
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[372] | 26 |
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[955] | 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 |
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| 38 | /// size of the PVS
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[613] | 39 | int pvsSize;
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[479] | 40 |
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| 41 | /// largest PVS of all view cells
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| 42 | int maxPvs;
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| 43 |
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| 44 | /// smallest PVS of all view cells
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| 45 | int minPvs;
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| 46 |
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| 47 | /// view cells with empty PVS
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| 48 | int emptyPvs;
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| 49 |
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| 50 | /// number of leaves covering the view space
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| 51 | int leaves;
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| 52 |
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| 53 | /// largest number of leaves covered by one view cell
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| 54 | int maxLeaves;
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| 55 |
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[564] | 56 | int invalid;
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| 57 |
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[479] | 58 | // Constructor
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| 59 | ViewCellsStatistics()
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| 60 | {
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| 61 | Reset();
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| 62 | }
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| 63 |
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| 64 | double AvgLeaves() const {return (double)leaves / (double)viewCells;};
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[613] | 65 | double AvgPvs() const {return (double)pvsSize / (double)viewCells;};
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[479] | 66 |
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| 67 | void Reset()
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| 68 | {
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| 69 | viewCells = 0;
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[613] | 70 | pvsSize = 0;
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[479] | 71 | maxPvs = 0;
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| 72 |
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| 73 | minPvs = 999999;
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| 74 | emptyPvs = 0;
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| 75 | leaves = 0;
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| 76 | maxLeaves = 0;
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[564] | 77 | invalid = 0;
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[479] | 78 | }
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| 79 |
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| 80 | void Print(ostream &app) const;
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| 81 |
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| 82 | friend ostream &operator<<(ostream &s, const ViewCellsStatistics &stat)
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| 83 | {
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| 84 | stat.Print(s);
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| 85 | return s;
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| 86 | }
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| 87 | };
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| 88 |
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[580] | 89 |
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[372] | 90 | /**
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| 91 | View cell with an optional mesh representation
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| 92 | */
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[580] | 93 |
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| 94 |
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[372] | 95 | class ViewCell: public MeshInstance
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| 96 | {
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[752] | 97 | friend class ViewCellsTree;
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| 98 | friend class ViewCellsManager;
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| 99 |
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[372] | 100 | public:
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| 101 | ViewCell();
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[471] | 102 |
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[372] | 103 | /** Constructor taking a mesh representing the shape of the viewcell.
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| 104 | */
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| 105 | ViewCell(Mesh *mesh);
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[462] | 106 |
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[469] | 107 | /** Default destructor.
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| 108 | */
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[462] | 109 | virtual ~ViewCell() {}
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[580] | 110 |
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[471] | 111 | /** Returns Pvs.
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[372] | 112 | */
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[469] | 113 | const ObjectPvs &GetPvs() const;
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[752] | 114 |
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[1002] | 115 | /** Returns pvs.
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| 116 | */
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[469] | 117 | ObjectPvs &GetPvs();
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[372] | 118 |
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[1002] | 119 | /** Completely substitutes the pvs.
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| 120 | */
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[880] | 121 | void SetPvs(const ObjectPvs &pvs);
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| 122 |
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[752] | 123 | /** Type of view cells.
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| 124 | */
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[372] | 125 | int Type() const;
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[471] | 126 |
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[1002] | 127 |
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[372] | 128 | /** Adds a passing ray to the passing ray container.
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| 129 | */
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[471] | 130 | void AddPassingRay(const Ray &ray, const int contributions);
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[372] | 131 |
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[469] | 132 | /** Returns volume of the view cell.
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| 133 | */
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[478] | 134 | float GetVolume() const;
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[372] | 135 |
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[478] | 136 | /** Returns area of the view cell.
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[469] | 137 | */
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[478] | 138 | float GetArea() const;
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[469] | 139 |
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[478] | 140 | /** Sets the volume of the view cell.
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| 141 | */
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| 142 | void SetVolume(float volume);
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| 143 |
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| 144 | /** Sets the area of the view cell.
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| 145 | */
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| 146 | void SetArea(float area);
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[503] | 147 |
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[478] | 148 |
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[580] | 149 | /** if this view cell is the root of a view cell hierarchy
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| 150 | */
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| 151 | bool IsRoot() const;
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[372] | 152 |
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[580] | 153 | /** Returns parent view cell.
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| 154 | */
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| 155 | ViewCellInterior *GetParent() const;
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[372] | 156 |
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[1002] | 157 | /** Sets parent of this view cell.
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| 158 | */
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| 159 | void SetParent(ViewCellInterior *parent);
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| 160 |
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| 161 |
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[503] | 162 | /** Sets the mesh for this view cell.
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| 163 | */
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| 164 | void SetMesh(Mesh *mesh);
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| 165 |
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[1002] | 166 | /** Sets this view cell to be a valid view cell according to some criteria.
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| 167 | */
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[547] | 168 | void SetValid(const bool valid);
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[1002] | 169 | /** Returns true if this view cell is considered to be valid according to
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| 170 | some criteria.
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| 171 | */
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[547] | 172 | bool GetValid() const;
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| 173 |
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[728] | 174 | /** Returns estimated render cost of this view cell.
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| 175 | */
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| 176 | float GetRenderCost() const;
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[580] | 177 |
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[752] | 178 | /** set color for visiualizations.
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| 179 | */
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| 180 | void SetColor(const RgbColor &color);
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[580] | 181 |
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[752] | 182 | /** get color for visualuzations.
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| 183 | */
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| 184 | RgbColor GetColor() const;
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[580] | 185 |
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[1002] | 186 | /** Adds a sample to the pvs.
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| 187 | @param sample the sample to be added
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| 188 | @param pdf a continuos measure of visibility
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| 189 | @param contribution returns the contribution of this sample to the pvs
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| 190 | */
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| 191 | bool AddPvsSample(Intersectable *sample, const float pdf, float &contribution);
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[608] | 192 |
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[1133] | 193 | bool AddKdPvsSample(KdLeaf *sample, const float pdf, float &contribution);
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[580] | 194 |
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| 195 | /// Rays piercing this view cell.
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| 196 | RayContainer mPiercingRays;
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| 197 |
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| 198 |
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| 199 | /** if this is a view cell correspending to a leaf in a hierarchy.
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| 200 | */
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| 201 | virtual bool IsLeaf() const = 0;
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| 202 |
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[752] | 203 | static bool SmallerPvs(const ViewCell *a, const ViewCell *b)
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| 204 | {
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[997] | 205 | // HACK: take scalar value because pvs may not have been stored properly
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| 206 | #if 1
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| 207 | return a->mPvsSize < b->mPvsSize;
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| 208 | #else
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| 209 | return a->GetPvs().GetSize() < b->GetPvs().GetSize();
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| 210 | #endif
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| 211 | }
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[569] | 212 |
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[997] | 213 | static bool SmallerRenderCost(const ViewCell *a, const ViewCell *b)
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| 214 | {
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| 215 | return a->GetRenderCost() < b->GetRenderCost();
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| 216 | }
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[580] | 217 |
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[997] | 218 | static bool LargerRenderCost(const ViewCell *a, const ViewCell *b)
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| 219 | {
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| 220 | return a->GetRenderCost() > b->GetRenderCost();
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| 221 | }
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[801] | 222 |
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[1002] | 223 | /** Sets merge cost used for merging this view cell from other cells.
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| 224 | @hack The function is available for leaves also to have a common interface,
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| 225 | but it should be less than zero for leaves.
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| 226 | */
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[600] | 227 | void SetMergeCost(const float mergeCost);
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[997] | 228 |
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[1002] | 229 | /** Returns merge cost needed to merge this leaf from other cells.
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| 230 | @hack The function is available for leaves also to have a common interface,
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| 231 | but it should be less than zero for leaves.
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| 232 | */
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[600] | 233 | float GetMergeCost() const;
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[997] | 234 |
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[1002] | 235 |
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| 236 |
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| 237 | ////////////////////////////////////////////
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| 238 | // mailing stuff
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| 239 |
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| 240 |
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[997] | 241 | static void NewMail(const int reserve = 1)
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| 242 | {
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[580] | 243 | sMailId += sReservedMailboxes;
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| 244 | sReservedMailboxes = reserve;
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| 245 | }
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[997] | 246 |
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[580] | 247 | void Mail() { mMailbox = sMailId; }
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| 248 | bool Mailed() const { return mMailbox == sMailId; }
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| 249 |
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| 250 | void Mail(const int mailbox) { mMailbox = sMailId + mailbox; }
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| 251 | bool Mailed(const int mailbox) const { return mMailbox == sMailId + mailbox; }
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| 252 |
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| 253 | int IncMail() { return ++mMailbox - sMailId; }
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| 254 |
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| 255 |
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| 256 | // last mail id -> warning not thread safe!
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| 257 | // both mailId and mailbox should be unique for each thread!!!
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| 258 | static int sMailId;
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| 259 | static int sReservedMailboxes;
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| 260 |
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[609] | 261 |
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[372] | 262 | protected:
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| 263 |
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[1002] | 264 | /// parent view cell in the view cell hierarchy
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| 265 | ViewCellInterior *mParent;
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| 266 |
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[372] | 267 | /// the potentially visible objects
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[469] | 268 | ObjectPvs mPvs;
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[1133] | 269 | /// the potentially visible kd leaves
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| 270 | KdPvs mKdPvs;
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[469] | 271 |
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| 272 | float mVolume;
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[478] | 273 | float mArea;
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[547] | 274 |
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[600] | 275 | float mMergeCost;
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[547] | 276 |
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| 277 | bool mValid;
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[608] | 278 |
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[881] | 279 | /// color used for consistent visualization
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[660] | 280 | RgbColor mColor;
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[752] | 281 |
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| 282 |
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[1002] | 283 | /// store pvs size, used for evaluation purpose when pvss are stored only in the leaves
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[752] | 284 | int mPvsSize;
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[1002] | 285 | /// if the pvs size scalar is up to date and corresponding to the real pvs size
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[752] | 286 | bool mPvsSizeValid;
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| 287 |
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[372] | 288 | };
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| 289 |
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[580] | 290 |
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| 291 | class ViewCellInterior: public ViewCell
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| 292 | {
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[752] | 293 | friend class ViewCellsManager;
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[580] | 294 | public:
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| 295 | ViewCellInterior();
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| 296 | ~ViewCellInterior();
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| 297 |
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| 298 | ViewCellInterior(Mesh *mesh);
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| 299 |
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| 300 |
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| 301 | /** Sets pointer from parent to child and vice versa.
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| 302 | */
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| 303 | void SetupChildLink(ViewCell *l);
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[586] | 304 | void RemoveChildLink(ViewCell *l);
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[580] | 305 | bool IsLeaf() const;
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| 306 |
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| 307 | ViewCellContainer mChildren;
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| 308 |
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[608] | 309 | void SetCost(const float c) {
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| 310 | mCost = c;
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| 311 | }
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| 312 | float GetCost() const {
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| 313 | return mCost;
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| 314 | }
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| 315 |
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| 316 | protected:
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| 317 | /** overall cost resulting from the merge */
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| 318 | float mCost;
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[580] | 319 | };
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| 320 |
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[881] | 321 |
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[469] | 322 | /**
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[881] | 323 | Leaf of the view cell.
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[469] | 324 | */
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[580] | 325 | class ViewCellLeaf: public ViewCell
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[366] | 326 | {
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| 327 | public:
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[881] | 328 | ViewCellLeaf() { mActiveViewCell = this; }
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| 329 | ViewCellLeaf(Mesh *mesh):
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| 330 | ViewCell(mesh) { mActiveViewCell = this; }
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[469] | 331 |
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[881] | 332 | bool IsLeaf() const
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| 333 | {
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| 334 | return true;
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| 335 | }
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| 336 |
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| 337 | /** Returns if this view cell is active.
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| 338 | */
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| 339 | ViewCell *GetActiveViewCell() const
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| 340 | { return mActiveViewCell; }
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| 341 |
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| 342 | /** Sets this view cell to be an active view cell.
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| 343 | */
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| 344 | void SetActiveViewCell(ViewCell *vc)
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| 345 | { mActiveViewCell = vc;}
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| 346 |
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[605] | 347 |
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[997] | 348 | /** points to the currently active view cell. This is the
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| 349 | view cell representing the current brach.
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| 350 | */
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[881] | 351 | ViewCell *mActiveViewCell;
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| 352 | };
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[479] | 353 |
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[1121] | 354 | /** Leaf of the view cell hierarchy corresponding
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| 355 | to a leaf in a spatial hierarchy.
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[881] | 356 | */
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| 357 | template<typename T>
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| 358 | class HierarchyLeafViewCell: public ViewCellLeaf
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| 359 | {
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| 360 | public:
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| 361 |
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| 362 | HierarchyLeafViewCell<T>(): ViewCellLeaf() { }
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| 363 | HierarchyLeafViewCell<T>(Mesh *mesh):
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| 364 | ViewCellLeaf(mesh) { }
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| 365 |
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| 366 |
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[580] | 367 | bool IsLeaf() const
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| 368 | {
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| 369 | return true;
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| 370 | }
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| 371 |
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[881] | 372 |
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[580] | 373 | /// Leaf of some hierarchy which is part of this view cell.
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| 374 | T mLeaf;
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[469] | 375 | };
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| 376 |
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[479] | 377 |
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[1010] | 378 | typedef HierarchyLeafViewCell<VspLeaf *> VspViewCell;
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[881] | 379 | typedef HierarchyLeafViewCell<BspLeaf *> BspViewCell;
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| 380 | typedef HierarchyLeafViewCell<KdLeaf *> KdViewCell;
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[469] | 381 |
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[366] | 382 |
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[580] | 383 |
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[1008] | 384 |
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[580] | 385 | class ViewCellsTree
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| 386 | {
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[600] | 387 | friend class ViewCellsManager;
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[752] | 388 |
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| 389 |
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[580] | 390 | public:
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[1004] | 391 | /** View cells tree constructor taking a view cell mnanager as parameter
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[997] | 392 | */
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[1004] | 393 | ViewCellsTree(ViewCellsManager *vcm);
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[580] | 394 | ~ViewCellsTree();
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| 395 |
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| 396 | /** Returns number of leaves this view cell consists of.
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| 397 | */
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[736] | 398 | int GetNumInitialViewCells(ViewCell *vc) const;
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[580] | 399 |
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| 400 | /** Collects leaves corresponding to a view cell.
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| 401 | */
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| 402 | void CollectLeaves(ViewCell *vc, ViewCellContainer &leaves) const;
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| 403 |
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| 404 | /** Merges view cells according to some cost heuristics.
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| 405 | */
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| 406 | int ConstructMergeTree(const VssRayContainer &rays, const ObjectContainer &objects);
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| 407 |
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| 408 | /** Refines view cells using shuffling, i.e., border leaves
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| 409 | of two view cells are exchanged if the resulting view cells
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| 410 | are tested to be "better" than the old ones.
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| 411 | @returns number of refined view cells
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| 412 | */
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| 413 | int RefineViewCells(const VssRayContainer &rays, const ObjectContainer &objects);
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[651] | 414 |
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| 415 | /** Assign colors to the viewcells so that they can be renderered interactively without
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[997] | 416 | color flickering.
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| 417 | */
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[651] | 418 | void AssignRandomColors();
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[580] | 419 |
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[997] | 420 | /** Updates view cell stats for this particular view cell.
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[605] | 421 | */
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| 422 | void UpdateViewCellsStats(ViewCell *vc, ViewCellsStatistics &vcStat);
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[580] | 423 |
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[997] | 424 | /** Get costs resulting from each merge step.
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| 425 | */
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[651] | 426 | void GetCostFunction(vector<float> &costFunction);
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[608] | 427 |
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[580] | 428 | /** Returns optimal set of view cells for a given number of view cells.
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| 429 | */
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| 430 | void CollectBestViewCellSet(ViewCellContainer &viewCells, const int numViewCells);
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| 431 |
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[581] | 432 | /** Root of view cells tree.
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| 433 | */
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[584] | 434 | ViewCell *GetRoot() const;
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[581] | 435 |
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[584] | 436 | /** Returns pvs of view cell.
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| 437 | @note pvs is returned per reference if tree is not compressed,
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| 438 | per copy else.
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| 439 | */
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| 440 | void GetPvs(ViewCell *vc, ObjectPvs &pvs) const;
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| 441 |
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| 442 | /** Returns pvs size of view cell.
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| 443 | */
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[1121] | 444 | //int GetPvsSize(ViewCell *vc) const;
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| 445 | int GetPvsSize(ViewCell *vc, const bool countKdPvs = false) const;
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[584] | 446 |
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| 447 | /** Returns actual number of object in this pvs and the children.
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| 448 | */
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| 449 | int GetNumPvsEntries(ViewCell *vc) const;
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| 450 |
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| 451 | /** Returns memory cost of this view cell.
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| 452 | */
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| 453 | float GetMemoryCost(ViewCell *vc) const;
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| 454 |
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[752] | 455 | /** Sets method of storage for view cells.
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[584] | 456 | */
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[752] | 457 | void SetViewCellsStorage(int type);
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[584] | 458 |
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[837] | 459 | /** pvs storage methods
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| 460 | */
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[752] | 461 | enum {PVS_IN_INTERIORS, COMPRESSED, PVS_IN_LEAVES};
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| 462 |
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[840] | 463 |
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[584] | 464 | /** If view cells in this tree have compressed pvs.
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| 465 | */
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[752] | 466 | int ViewCellsStorage() const;
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[584] | 467 |
|
---|
[660] | 468 | /** Returns active view cell that is in the path of this view cell.
|
---|
| 469 | */
|
---|
[881] | 470 | ViewCell *GetActiveViewCell(ViewCellLeaf *vc) const;
|
---|
[590] | 471 |
|
---|
[660] | 472 | /** Sets the leaves to be the currently active view cells.
|
---|
| 473 | */
|
---|
| 474 | void SetActiveSetToLeaves();
|
---|
| 475 |
|
---|
[651] | 476 | /** Propagates pvs up the tree to the root and downwards the tree.
|
---|
[610] | 477 | */
|
---|
[651] | 478 | void PropagatePvs(ViewCell *vc);
|
---|
[610] | 479 |
|
---|
[837] | 480 | /** Exports view cells to file.
|
---|
| 481 | */
|
---|
[971] | 482 | #if ZIPPED_VIEWCELLS
|
---|
| 483 | bool Export(ogzstream &stream, const bool exportPvs = false);
|
---|
| 484 | #else
|
---|
[955] | 485 | bool Export(ofstream &stream, const bool exportPvs = false);
|
---|
[971] | 486 | #endif
|
---|
[610] | 487 |
|
---|
[649] | 488 | /** Export statistics of this view cell tree.
|
---|
| 489 | */
|
---|
[660] | 490 | void ExportStats(const string &mergeStats);
|
---|
[610] | 491 |
|
---|
[650] | 492 | /** Sets root of hierarchy.
|
---|
| 493 | */
|
---|
| 494 | void SetRoot(ViewCell *root);
|
---|
| 495 |
|
---|
| 496 | //float ComputeVolume(ViewCell *vc);
|
---|
| 497 |
|
---|
[651] | 498 | /** Assignes unique ids to view cells.
|
---|
| 499 | */
|
---|
| 500 | void CreateUniqueViewCellsIds();
|
---|
| 501 |
|
---|
[660] | 502 | /** Resets pvs of whole tree.
|
---|
| 503 | */
|
---|
| 504 | void ResetPvs();
|
---|
[651] | 505 |
|
---|
[1121] | 506 | /** Counts pvs of the view cell taking the kd cells into account.
|
---|
| 507 | */
|
---|
| 508 | int CountKdPvs(const ViewCellLeaf *vc) const;
|
---|
| 509 |
|
---|
[580] | 510 | protected:
|
---|
| 511 |
|
---|
| 512 |
|
---|
[997] | 513 | /////////////////////////////////////////////////////////////////
|
---|
| 514 | // merge related stuff //
|
---|
| 515 | /////////////////////////////////////////////////////////////////
|
---|
[580] | 516 |
|
---|
[729] | 517 | /** Computes render cost of the merged pvs.
|
---|
| 518 | */
|
---|
| 519 | float ComputeMergedPvsCost(const ObjectPvs &pvs1, const ObjectPvs &pvs2) const;
|
---|
| 520 |
|
---|
[580] | 521 | /** Returns cost of this leaf according to current heuristics.
|
---|
| 522 | */
|
---|
| 523 | float GetCostHeuristics(ViewCell *vc) const;
|
---|
| 524 |
|
---|
| 525 | /** Returns cost of leaf.
|
---|
| 526 | */
|
---|
| 527 | float GetRenderCost(ViewCell *vc) const;
|
---|
| 528 |
|
---|
| 529 | /** Evaluates the merge cost of this merge candidate pair.
|
---|
| 530 | */
|
---|
| 531 | void EvalMergeCost(MergeCandidate &mc) const;
|
---|
| 532 |
|
---|
| 533 | /** Variance of leaf.
|
---|
| 534 | */
|
---|
| 535 | float GetVariance(ViewCell *vc) const;
|
---|
| 536 |
|
---|
| 537 | /** Standard deviation of leaf.
|
---|
| 538 | */
|
---|
| 539 | float GetDeviation(ViewCell *vc) const;
|
---|
| 540 |
|
---|
[582] | 541 | /** Tries to set this merge candidate to valid.
|
---|
| 542 | @returns false if both view cells are the same
|
---|
[580] | 543 | */
|
---|
[582] | 544 | bool ValidateMergeCandidate(MergeCandidate &mc) const;
|
---|
[580] | 545 |
|
---|
| 546 | /** Merge view cells of leaves l1 and l2.
|
---|
| 547 | @returns difference in pvs size
|
---|
| 548 | */
|
---|
| 549 | ViewCellInterior *MergeViewCells(ViewCell *l, ViewCell *r, int &pvsDiff); //const;
|
---|
| 550 |
|
---|
| 551 | /** Shuffles, i.e. takes border leaf from view cell 1 and adds it
|
---|
| 552 | to view cell 2.
|
---|
| 553 | */
|
---|
[586] | 554 | void ShuffleLeaf(ViewCell *leaf, ViewCellInterior *vc1, ViewCellInterior *vc2) const;
|
---|
[580] | 555 |
|
---|
| 556 | /** Shuffles the leaves, i.e., tests if exchanging
|
---|
| 557 | the leaves helps in improving the view cells.
|
---|
| 558 | */
|
---|
[586] | 559 | bool ShuffleLeaves(MergeCandidate &mc) const;
|
---|
[580] | 560 |
|
---|
| 561 | /** Calculates cost for merge of view cell 1 and 2.
|
---|
| 562 | */
|
---|
[586] | 563 | float EvalShuffleCost(ViewCell *leaf,
|
---|
| 564 | ViewCellInterior *vc1,
|
---|
| 565 | ViewCellInterior *vc2) const;
|
---|
[580] | 566 |
|
---|
| 567 | /** Exports a snapshot of the merged view cells to disc.
|
---|
| 568 | */
|
---|
| 569 | void ExportMergedViewCells(ViewCellContainer &viewCells,
|
---|
| 570 | const ObjectContainer &objects,
|
---|
| 571 | const int numNewViewCells);
|
---|
| 572 |
|
---|
[997] | 573 | /** Merge queue must be reset after some time because expected value
|
---|
[580] | 574 | may not be valid.
|
---|
| 575 | */
|
---|
| 576 | void ResetMergeQueue();
|
---|
| 577 |
|
---|
| 578 | /** Updates the current top level of view cells.
|
---|
[582] | 579 | @returns number of newly merged view cells
|
---|
[580] | 580 | */
|
---|
[582] | 581 | int UpdateActiveViewCells(ViewCellContainer &viewCells);
|
---|
[580] | 582 |
|
---|
[997] | 583 | /** Helper function pullling pvs as high up in the tree as possible.
|
---|
| 584 | */
|
---|
[610] | 585 | void PullUpVisibility(ViewCellInterior *interior);
|
---|
[580] | 586 |
|
---|
[997] | 587 | /** Compress pvs of view cell and children.
|
---|
| 588 | */
|
---|
[584] | 589 | void CompressViewCellsPvs(ViewCell *root);
|
---|
[580] | 590 |
|
---|
[582] | 591 | /** Returns memory usage of view cells.
|
---|
| 592 | */
|
---|
| 593 | float GetMemUsage() const;
|
---|
[837] | 594 |
|
---|
| 595 | /** Exports single view cell.
|
---|
[610] | 596 | NOTE: should be in exporter!!
|
---|
| 597 | */
|
---|
[971] | 598 | #if ZIPPED_VIEWCELLS
|
---|
| 599 | void ExportViewCell(ViewCell *viewCell, ogzstream &stream, const bool exportPvs);
|
---|
| 600 | #else
|
---|
| 601 | void ExportViewCell(ViewCell *viewCell, ofstream &stream, const bool exportPvs);
|
---|
| 602 | #endif
|
---|
[581] | 603 |
|
---|
[837] | 604 | /** Exports pvs of a view cell.
|
---|
| 605 | */
|
---|
[971] | 606 | #if ZIPPED_VIEWCELLS
|
---|
| 607 | void ExportPvs(ViewCell *viewCell, ogzstream &stream);
|
---|
| 608 | #else
|
---|
[840] | 609 | void ExportPvs(ViewCell *viewCell, ofstream &stream);
|
---|
[971] | 610 | #endif
|
---|
[582] | 611 |
|
---|
[610] | 612 |
|
---|
[584] | 613 | /// if the view cell tree hold compressed pvs
|
---|
[752] | 614 | int mViewCellsStorage;
|
---|
[582] | 615 |
|
---|
[580] | 616 | ViewCellsManager *mViewCellsManager;
|
---|
| 617 | ViewCell *mRoot;
|
---|
| 618 |
|
---|
| 619 | /// if merge visualization should be shown
|
---|
| 620 | bool mExportMergedViewCells;
|
---|
| 621 |
|
---|
| 622 |
|
---|
[837] | 623 | /// intermediate container of merged view cells.
|
---|
[582] | 624 | ViewCellContainer mMergedViewCells;
|
---|
| 625 |
|
---|
[580] | 626 |
|
---|
[837] | 627 | /// if merged view cells are refined.
|
---|
[586] | 628 | bool mRefineViewCells;
|
---|
| 629 |
|
---|
[580] | 630 | /// weights between variance and render cost increase (must be between zero and one)
|
---|
| 631 | float mRenderCostWeight;
|
---|
| 632 |
|
---|
| 633 | /// overall cost used to normalize cost ratio
|
---|
| 634 | float mOverallCost;
|
---|
| 635 | float mExpectedCost;
|
---|
| 636 | float mDeviation;
|
---|
| 637 | float mAvgRenderCost;
|
---|
[837] | 638 | /// the area is used for pvs heuristics
|
---|
[580] | 639 | int mUseAreaForPvs;
|
---|
| 640 |
|
---|
[582] | 641 | int mNumActiveViewCells;
|
---|
[580] | 642 |
|
---|
| 643 | /// minimal number of view cells
|
---|
| 644 | int mMergeMinViewCells;
|
---|
| 645 | /// maximal cost ratio for the merge
|
---|
| 646 | float mMergeMaxCostRatio;
|
---|
| 647 |
|
---|
| 648 | typedef priority_queue<MergeCandidate> MergeQueue;
|
---|
| 649 |
|
---|
| 650 | MergeQueue mMergeQueue;
|
---|
| 651 |
|
---|
[582] | 652 | float mMaxMemory;
|
---|
[580] | 653 |
|
---|
[938] | 654 | int mMaxMergesPerPass;
|
---|
| 655 | float mAvgCostMaxDeviation;
|
---|
[580] | 656 | };
|
---|
| 657 |
|
---|
| 658 |
|
---|
| 659 | /**
|
---|
| 660 | Candidate for leaf merging based on priority.
|
---|
| 661 | */
|
---|
| 662 | class MergeCandidate
|
---|
| 663 | {
|
---|
| 664 | friend class ViewCellsTree;
|
---|
| 665 |
|
---|
| 666 | public:
|
---|
| 667 |
|
---|
| 668 | MergeCandidate(ViewCell *l, ViewCell *r);
|
---|
| 669 |
|
---|
| 670 | /** If this merge pair is still valid.
|
---|
| 671 | */
|
---|
| 672 | bool IsValid() const;
|
---|
| 673 |
|
---|
| 674 |
|
---|
| 675 | friend bool operator<(const MergeCandidate &leafa, const MergeCandidate &leafb)
|
---|
| 676 | {
|
---|
| 677 | return leafb.GetMergeCost() < leafa.GetMergeCost();
|
---|
| 678 | }
|
---|
| 679 |
|
---|
| 680 | void SetLeftViewCell(ViewCell *l);
|
---|
| 681 | void SetRightViewCell(ViewCell *l);
|
---|
| 682 |
|
---|
| 683 | ViewCell *GetLeftViewCell() const;
|
---|
| 684 | ViewCell *GetRightViewCell() const;
|
---|
| 685 |
|
---|
[703] | 686 | /** Returns leaf view cell initially associated with this merge candidate.
|
---|
| 687 | */
|
---|
[580] | 688 | ViewCell *GetInitialLeftViewCell() const;
|
---|
[1133] | 689 | /** Returns leaf view cell initially associated with this merge candidate.
|
---|
| 690 | */
|
---|
[580] | 691 | ViewCell *GetInitialRightViewCell() const;
|
---|
| 692 |
|
---|
| 693 | /** Returns the increase of the standard deviation of this merge candidate.
|
---|
| 694 | */
|
---|
| 695 | float GetDeviationIncr() const;
|
---|
| 696 |
|
---|
| 697 | /** Merge cost of this candidate pair.
|
---|
| 698 | */
|
---|
| 699 | float GetMergeCost() const;
|
---|
| 700 |
|
---|
| 701 | /** Render cost of this candidate.
|
---|
| 702 | */
|
---|
| 703 | float GetRenderCost() const;
|
---|
| 704 |
|
---|
| 705 | static float sRenderCostWeight;
|
---|
| 706 |
|
---|
| 707 | protected:
|
---|
| 708 |
|
---|
| 709 | /// render cost increase by this merge
|
---|
| 710 | float mRenderCost;
|
---|
| 711 | /// increase / decrease of standard deviation
|
---|
| 712 | float mDeviationIncr;
|
---|
| 713 |
|
---|
| 714 | ViewCell *mLeftViewCell;
|
---|
| 715 | ViewCell *mRightViewCell;
|
---|
| 716 |
|
---|
| 717 | ViewCell *mInitialLeftViewCell;
|
---|
| 718 | ViewCell *mInitialRightViewCell;
|
---|
| 719 | };
|
---|
| 720 |
|
---|
| 721 |
|
---|
| 722 | class MergeStatistics: public StatisticsBase
|
---|
| 723 | {
|
---|
| 724 | public:
|
---|
| 725 |
|
---|
| 726 | int merged;
|
---|
| 727 | int siblings;
|
---|
| 728 | int candidates;
|
---|
| 729 | int nodes;
|
---|
| 730 |
|
---|
| 731 | int accTreeDist;
|
---|
| 732 | int maxTreeDist;
|
---|
| 733 |
|
---|
| 734 | Real collectTime;
|
---|
| 735 | Real mergeTime;
|
---|
| 736 |
|
---|
| 737 | Real overallCost;
|
---|
| 738 |
|
---|
| 739 | Real expectedRenderCost;
|
---|
| 740 | Real deviation;
|
---|
| 741 | Real heuristics;
|
---|
| 742 |
|
---|
| 743 | // Constructor
|
---|
| 744 | MergeStatistics()
|
---|
| 745 | {
|
---|
| 746 | Reset();
|
---|
| 747 | }
|
---|
| 748 |
|
---|
| 749 | double AvgTreeDist() const {return (double)accTreeDist / (double)merged;};
|
---|
| 750 |
|
---|
| 751 | void Reset()
|
---|
| 752 | {
|
---|
| 753 | nodes = 0;
|
---|
| 754 | merged = 0;
|
---|
| 755 | siblings = 0;
|
---|
| 756 | candidates = 0;
|
---|
| 757 |
|
---|
| 758 | accTreeDist = 0;
|
---|
| 759 | maxTreeDist = 0;
|
---|
| 760 |
|
---|
| 761 | collectTime = 0;
|
---|
| 762 | mergeTime = 0;
|
---|
| 763 | overallCost = 0;
|
---|
| 764 |
|
---|
| 765 | expectedRenderCost = 0;
|
---|
| 766 | deviation = 0;
|
---|
| 767 | heuristics = 0;
|
---|
| 768 |
|
---|
| 769 | }
|
---|
| 770 |
|
---|
| 771 | void Print(ostream &app) const;
|
---|
| 772 |
|
---|
| 773 | friend ostream &operator<<(ostream &s, const MergeStatistics &stat)
|
---|
| 774 | {
|
---|
| 775 | stat.Print(s);
|
---|
| 776 | return s;
|
---|
| 777 | }
|
---|
| 778 | };
|
---|
| 779 |
|
---|
[860] | 780 | }
|
---|
| 781 |
|
---|
[372] | 782 | #endif
|
---|