[1020] | 1 | #ifndef _SamplingStategy_H__
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| 2 | #define _SamplingStategy_H__
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| 3 |
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[1867] | 4 | #include "Halton.h"
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[1020] | 5 |
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| 6 | namespace GtpVisibilityPreprocessor {
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| 7 |
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| 8 |
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| 9 | class Preprocessor;
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| 10 | struct SimpleRay;
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[1771] | 11 | class SimpleRayContainer;
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[1020] | 12 |
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| 13 | /** This class generates a specific sampling strategy.
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| 14 | */
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| 15 | class SamplingStrategy
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| 16 | {
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[1772] | 17 | public:
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[1020] | 18 |
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[1772] | 19 | /** Sample rays of particular type
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| 20 | */
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| 21 | enum
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| 22 | {
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| 23 | OBJECT_BASED_DISTRIBUTION,
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| 24 | DIRECTION_BASED_DISTRIBUTION,
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| 25 | DIRECTION_BOX_BASED_DISTRIBUTION,
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| 26 | SPATIAL_BOX_BASED_DISTRIBUTION,
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| 27 | RSS_BASED_DISTRIBUTION,
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| 28 | RSS_SILHOUETTE_BASED_DISTRIBUTION,
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| 29 | VSS_BASED_DISTRIBUTION,
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| 30 | OBJECT_DIRECTION_BASED_DISTRIBUTION,
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| 31 | OBJECTS_INTERIOR_DISTRIBUTION,
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| 32 | REVERSE_OBJECT_BASED_DISTRIBUTION,
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| 33 | VIEWCELL_BORDER_BASED_DISTRIBUTION,
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| 34 | VIEWSPACE_BORDER_BASED_DISTRIBUTION,
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[1824] | 35 | REVERSE_VIEWSPACE_BORDER_BASED_DISTRIBUTION,
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| 36 | GLOBAL_LINES_DISTRIBUTION
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[1772] | 37 | };
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[1520] | 38 |
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[1772] | 39 | /** Default constructor
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| 40 | */
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| 41 | SamplingStrategy(const Preprocessor &preprocessor);
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[1020] | 42 |
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[1772] | 43 | virtual ~SamplingStrategy();
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| 44 |
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| 45 | /** Each strategy has to implement this function.
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| 46 | @returns true if generated valid sample.
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| 47 | */
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| 48 |
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[1867] | 49 | virtual int GenerateSamples(const int number, SimpleRayContainer &rays);
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[1772] | 50 |
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[1771] | 51 | private:
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[1020] | 52 |
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[1867] | 53 | virtual bool GenerateSample(SimpleRay &ray) = 0;
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[1020] | 54 |
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[1771] | 55 | public:
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[1772] | 56 | /// variables usefull for mixed distribution sampling
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| 57 | int mType;
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| 58 | int mRays;
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| 59 | float mContribution;
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| 60 | float mTime;
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| 61 | float mRatio;
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| 62 |
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[1020] | 63 | protected:
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[1772] | 64 |
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| 65 | const Preprocessor &mPreprocessor;
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| 66 |
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[1020] | 67 | };
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| 68 |
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| 69 |
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| 70 | class ObjectBasedDistribution: public SamplingStrategy
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| 71 | {
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| 72 | public:
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| 73 |
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[1771] | 74 | ObjectBasedDistribution(const Preprocessor &preprocessor):
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| 75 | SamplingStrategy(preprocessor) {
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| 76 | mType = OBJECT_BASED_DISTRIBUTION;
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| 77 | }
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[1020] | 78 |
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[1771] | 79 | private:
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[1867] | 80 | virtual bool GenerateSample(SimpleRay &ray);
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[1020] | 81 | };
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| 82 |
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| 83 |
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[1695] | 84 | class ReverseObjectBasedDistribution: public SamplingStrategy
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| 85 | {
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| 86 | public:
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| 87 |
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| 88 | ReverseObjectBasedDistribution(const Preprocessor &preprocessor):
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[1771] | 89 | SamplingStrategy(preprocessor) {
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| 90 | mType = REVERSE_OBJECT_BASED_DISTRIBUTION;
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| 91 | }
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[1695] | 92 |
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[1771] | 93 | private:
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[1867] | 94 | virtual bool GenerateSample(SimpleRay &ray);
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[1695] | 95 | };
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| 96 |
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| 97 |
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[1020] | 98 | class ObjectDirectionBasedDistribution: public SamplingStrategy
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| 99 | {
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| 100 | public:
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| 101 | ObjectDirectionBasedDistribution(const Preprocessor &preprocessor):
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[1771] | 102 | SamplingStrategy(preprocessor) {
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| 103 | mType = OBJECT_DIRECTION_BASED_DISTRIBUTION;
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| 104 | }
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| 105 | private:
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[1867] | 106 | virtual bool GenerateSample(SimpleRay &ray);
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[1020] | 107 | };
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| 108 |
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| 109 |
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| 110 | class DirectionBasedDistribution: public SamplingStrategy
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| 111 | {
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| 112 | public:
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[1771] | 113 | DirectionBasedDistribution(const Preprocessor &preprocessor):
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| 114 | SamplingStrategy(preprocessor){
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| 115 | mType = DIRECTION_BASED_DISTRIBUTION;
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| 116 | }
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| 117 | private:
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[1867] | 118 | virtual bool GenerateSample(SimpleRay &ray);
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[1020] | 119 | };
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| 120 |
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| 121 |
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| 122 | class DirectionBoxBasedDistribution: public SamplingStrategy
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| 123 | {
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| 124 | public:
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| 125 | DirectionBoxBasedDistribution(const Preprocessor &preprocessor):
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[1771] | 126 | SamplingStrategy(preprocessor){
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| 127 | mType = DIRECTION_BOX_BASED_DISTRIBUTION;
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| 128 | }
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[1020] | 129 |
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[1771] | 130 | private:
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[1867] | 131 | virtual bool GenerateSample(SimpleRay &ray);
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[1020] | 132 | };
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| 133 |
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| 134 |
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| 135 | class SpatialBoxBasedDistribution: public SamplingStrategy
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| 136 | {
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| 137 | public:
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[1867] | 138 | Halton<6> halton;
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| 139 | SpatialBoxBasedDistribution(const Preprocessor &preprocessor):
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| 140 | SamplingStrategy(preprocessor){
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| 141 | mType = DIRECTION_BOX_BASED_DISTRIBUTION;
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| 142 | }
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| 143 |
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[1772] | 144 | private:
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[1867] | 145 | virtual bool GenerateSample(SimpleRay &ray);
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[1772] | 146 | };
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| 147 |
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| 148 |
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| 149 | class ViewSpaceBorderBasedDistribution: public SamplingStrategy
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| 150 | {
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| 151 | public:
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| 152 | ViewSpaceBorderBasedDistribution(const Preprocessor &preprocessor):
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| 153 | SamplingStrategy(preprocessor){
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[1771] | 154 | mType = SPATIAL_BOX_BASED_DISTRIBUTION;
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| 155 | }
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[1020] | 156 |
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[1771] | 157 | private:
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[1867] | 158 | virtual bool GenerateSample(SimpleRay &ray);
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[1020] | 159 | };
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| 160 |
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[1772] | 161 |
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| 162 | class ReverseViewSpaceBorderBasedDistribution: public SamplingStrategy
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| 163 | {
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| 164 | public:
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| 165 | ReverseViewSpaceBorderBasedDistribution(const Preprocessor &preprocessor):
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| 166 | SamplingStrategy(preprocessor){
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| 167 | mType = SPATIAL_BOX_BASED_DISTRIBUTION;
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| 168 | }
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| 169 |
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| 170 | private:
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[1867] | 171 | virtual bool GenerateSample(SimpleRay &ray);
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[1772] | 172 | };
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| 173 |
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| 174 |
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[1771] | 175 | class RssBasedDistribution: public SamplingStrategy
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| 176 | {
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| 177 | public:
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| 178 | RssBasedDistribution(const Preprocessor &preprocessor):
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| 179 | SamplingStrategy(preprocessor){
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| 180 | mType = RSS_BASED_DISTRIBUTION;
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| 181 | }
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[1020] | 182 |
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[1771] | 183 |
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[1867] | 184 | virtual int GenerateSamples(const int number, SimpleRayContainer &ray) {
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[1771] | 185 | // TBD!!!
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| 186 | return 0;
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| 187 | }
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| 188 |
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| 189 | private:
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[1867] | 190 | virtual bool GenerateSample(SimpleRay &ray);
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[1771] | 191 |
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| 192 | };
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| 193 |
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[1772] | 194 |
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[1763] | 195 | class ViewCellBorderBasedDistribution: public SamplingStrategy
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| 196 | {
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| 197 | public:
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[1771] | 198 | ViewCellBorderBasedDistribution(const Preprocessor &preprocessor):
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| 199 | SamplingStrategy(preprocessor) {}
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| 200 |
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[1867] | 201 | virtual bool GenerateSample(SimpleRay &ray);
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[1763] | 202 | };
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| 203 |
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[1824] | 204 | class GlobalLinesDistribution: public SamplingStrategy
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| 205 | {
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| 206 | public:
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[1867] | 207 | Halton<4> halton;
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| 208 | //HaltonSequence mHalton;
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| 209 |
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[1824] | 210 | GlobalLinesDistribution(const Preprocessor &preprocessor):
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[1867] | 211 | SamplingStrategy(preprocessor) {
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| 212 | mType = GLOBAL_LINES_DISTRIBUTION;
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| 213 | }
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[1824] | 214 |
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[1867] | 215 | virtual bool GenerateSample(SimpleRay &ray);
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[1824] | 216 | };
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[1763] | 217 |
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[1824] | 218 |
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[1020] | 219 | /** This strategy generates samples inside of the objects, e.g.,
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| 220 | for sampling the inside of a colon.
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| 221 | */
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[1021] | 222 | /*class ObjectsInteriorDistribution: public SamplingStrategy
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[1020] | 223 | {
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| 224 | public:
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| 225 | ObjectsInteriorDistribution(const Preprocessor &preprocessor):
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| 226 | SamplingStrategy(preprocessor) {}
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| 227 |
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[1867] | 228 | virtual bool GenerateSample(SimpleRay &ray);
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[1020] | 229 | };
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[1021] | 230 | */
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[1020] | 231 | };
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| 232 |
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| 233 | #endif
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