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