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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7 | #include "Statistics.h"
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8 | //namespace GtpVisibilityPreprocessor {
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9 |
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10 | struct Triangle3;
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11 |
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12 | class BspInterior;
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13 | class BspPvs;
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14 | class BspLeaf;
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15 | class VspKdTree;
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16 | class VspKdLeaf;
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17 | class KdLeaf;
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18 |
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19 | /**
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20 | View cell with an optional mesh representation
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21 | */
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22 | class ViewCell: public MeshInstance
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23 | {
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24 | public:
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25 | ViewCell();
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26 |
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27 | /** Constructor taking a mesh representing the shape of the viewcell.
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28 | */
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29 | ViewCell(Mesh *mesh);
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30 |
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31 | /** Default destructor.
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32 | */
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33 | virtual ~ViewCell() {}
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34 | /** Returns Pvs.
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35 | */
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36 | const ObjectPvs &GetPvs() const;
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37 | ObjectPvs &GetPvs();
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38 |
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39 | int Type() const;
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40 |
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41 | /** Adds a passing ray to the passing ray container.
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42 | */
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43 | void AddPassingRay(const Ray &ray, const int contributions);
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44 |
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45 | /** Returns volume of the view cell.
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46 | */
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47 | float GetVolume() const;
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48 |
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49 | /** Returns area of the view cell.
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50 | */
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51 | float GetArea() const;
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52 |
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53 | /** Sets the volume of the view cell.
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54 | */
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55 | void SetVolume(float volume);
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56 |
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57 | /** Sets the area of the view cell.
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58 | */
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59 | void SetArea(float area);
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60 |
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61 | /// Ray set description of the rays passing through this node.
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62 | PassingRaySet mPassingRays;
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63 |
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64 | /// Rays piercing this view cell.
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65 | RayContainer mPiercingRays;
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66 |
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67 | protected:
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68 |
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69 | /// the potentially visible objects
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70 | ObjectPvs mPvs;
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71 |
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72 | float mVolume;
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73 | float mArea;
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74 | };
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75 |
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76 | /**
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77 | View cell belonging to a hierarchy.
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78 | */
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79 | template<typename T>
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80 | class HierarchyViewCell: public ViewCell
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81 | {
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82 | public:
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83 | HierarchyViewCell<T>(): mLeaves(0) {}
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84 | HierarchyViewCell<T>(Mesh *mesh):
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85 | ViewCell(mesh), mLeaves(0) {}
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86 |
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87 | /// Leaves of the hierarchy which are part of this view cell.
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88 | std::vector<T> mLeaves;
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89 | };
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90 |
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91 | typedef HierarchyViewCell<BspLeaf *> BspViewCell;
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92 | typedef HierarchyViewCell<KdLeaf *> KdViewCell;
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93 | typedef HierarchyViewCell<VspKdLeaf *> VspKdViewCell;
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94 |
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95 |
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96 | /** Statistics for a view cell partition.
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97 | */
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98 |
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99 | class ViewCellsStatistics: public StatisticsBase
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100 | {
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101 | public:
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102 |
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103 | /// number of view cells
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104 | int viewCells;
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105 |
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106 | /// size of the PVS
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107 | int pvs;
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108 |
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109 | /// largest PVS of all view cells
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110 | int maxPvs;
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111 |
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112 | /// smallest PVS of all view cells
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113 | int minPvs;
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114 |
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115 | /// view cells with empty PVS
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116 | int emptyPvs;
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117 |
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118 | /// number of leaves covering the view space
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119 | int leaves;
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120 |
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121 | /// largest number of leaves covered by one view cell
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122 | int maxLeaves;
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123 |
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124 | // Constructor
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125 | ViewCellsStatistics()
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126 | {
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127 | Reset();
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128 | }
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129 |
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130 | double AvgLeaves() const {return (double)leaves / (double)viewCells;};
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131 | double AvgPvs() const {return (double)pvs / (double)viewCells;};
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132 |
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133 | void Reset()
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134 | {
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135 | viewCells = 0;
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136 | pvs = 0;
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137 | maxPvs = 0;
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138 |
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139 | minPvs = 999999;
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140 | emptyPvs = 0;
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141 | leaves = 0;
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142 | maxLeaves = 0;
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143 | }
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144 |
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145 | void Print(ostream &app) const;
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146 |
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147 | friend ostream &operator<<(ostream &s, const ViewCellsStatistics &stat)
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148 | {
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149 | stat.Print(s);
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150 | return s;
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151 | }
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152 | };
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153 |
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154 | #endif
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