[1460] | 1 | #include "Environment.h"
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| 2 | #include "GvsPreprocessor.h"
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| 3 | #include "GlRenderer.h"
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[1473] | 4 | #include "VssRay.h"
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| 5 | #include "ViewCellsManager.h"
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[1486] | 6 | #include "Triangle3.h"
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[1489] | 7 | #include "IntersectableWrapper.h"
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[1500] | 8 | #include "Plane3.h"
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[1521] | 9 | #include "RayCaster.h"
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[1522] | 10 | #include "Exporter.h"
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[1545] | 11 | #include "SamplingStrategy.h"
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[1990] | 12 | #include "BvHierarchy.h"
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[2116] | 13 | #include "Polygon3.h"
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[1460] | 14 |
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[1473] | 15 |
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[1460] | 16 | namespace GtpVisibilityPreprocessor
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| 17 | {
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| 18 |
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[2053] | 19 | #define GVS_DEBUG 1
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[1934] | 20 |
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[1522] | 21 | struct VizStruct
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| 22 | {
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| 23 | Polygon3 *enlargedTriangle;
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| 24 | Triangle3 originalTriangle;
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| 25 | VssRay *ray;
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| 26 | };
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[1460] | 27 |
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[2048] | 28 |
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[2017] | 29 | static const float MIN_DIST = 0.001f;
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[1990] | 30 |
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[1522] | 31 | static vector<VizStruct> vizContainer;
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| 32 |
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[1533] | 33 | GvsPreprocessor::GvsPreprocessor():
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[1545] | 34 | Preprocessor(),
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[2000] | 35 | mSamplingType(SamplingStrategy::VIEWCELL_BASED_DISTRIBUTION),
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[1996] | 36 | mProcessedViewCells(0),
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[1982] | 37 | mCurrentViewCell(NULL)
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[1460] | 38 | {
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[1486] | 39 | Environment::GetSingleton()->GetIntValue("GvsPreprocessor.totalSamples", mTotalSamples);
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| 40 | Environment::GetSingleton()->GetIntValue("GvsPreprocessor.initialSamples", mInitialSamples);
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[2048] | 41 | Environment::GetSingleton()->GetIntValue("GvsPreprocessor.gvsSamplesPerPass", mGvsSamplesPerPass);
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[1996] | 42 | Environment::GetSingleton()->GetIntValue("GvsPreprocessor.minContribution", mMinContribution);
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[1486] | 43 | Environment::GetSingleton()->GetFloatValue("GvsPreprocessor.epsilon", mEps);
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[1500] | 44 | Environment::GetSingleton()->GetFloatValue("GvsPreprocessor.threshold", mThreshold);
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[1990] | 45 | Environment::GetSingleton()->GetBoolValue("GvsPreprocessor.perViewCell", mPerViewCell);
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[1996] | 46 | Environment::GetSingleton()->GetIntValue("GvsPreprocessor.maxViewCells", mMaxViewCells);
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[1473] | 47 |
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[2048] | 48 | Environment::GetSingleton()->GetBoolValue("Preprocessor.evaluatePixelError", mEvaluatePixelError);
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| 49 |
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[1934] | 50 | char gvsStatsLog[100];
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| 51 | Environment::GetSingleton()->GetStringValue("GvsPreprocessor.stats", gvsStatsLog);
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| 52 | mGvsStatsStream.open(gvsStatsLog);
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| 53 |
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[1486] | 54 | Debug << "Gvs preprocessor options" << endl;
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| 55 | Debug << "number of total samples: " << mTotalSamples << endl;
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| 56 | Debug << "number of initial samples: " << mInitialSamples << endl;
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[2048] | 57 | cout << "number of gvs samples per pass: " << mGvsSamplesPerPass << endl;
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| 58 | cout << "number of samples per pass: " << mSamplesPerPass << endl;
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[1501] | 59 | Debug << "threshold: " << mThreshold << endl;
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[1934] | 60 | Debug << "epsilon: " << mEps << endl;
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| 61 | Debug << "stats: " << gvsStatsLog << endl;
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[1996] | 62 | Debug << "per view cell: " << mPerViewCell << endl;
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| 63 | Debug << "max view cells: " << mMaxViewCells << endl;
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| 64 | Debug << "min contribution: " << mMinContribution << endl;
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[1486] | 65 |
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[1990] | 66 | if (1)
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| 67 | mOnlyRandomSampling = false;
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| 68 | else
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[1934] | 69 | mOnlyRandomSampling = true;
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| 70 |
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| 71 | mGvsStats.Reset();
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[1460] | 72 | }
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| 73 |
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[1473] | 74 |
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[1990] | 75 | GvsPreprocessor::~GvsPreprocessor()
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| 76 | {
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[1996] | 77 | ClearRayQueue();
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| 78 | }
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| 79 |
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| 80 |
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| 81 | void GvsPreprocessor::ClearRayQueue()
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| 82 | {
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[1990] | 83 | // clean ray queue
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| 84 | while (!mRayQueue.empty())
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| 85 | {
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| 86 | // handle next ray
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| 87 | VssRay *ray = mRayQueue.top();
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| 88 | mRayQueue.pop();
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| 89 |
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[2048] | 90 | //delete ray;
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[1990] | 91 | }
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| 92 | }
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| 93 |
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| 94 |
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[1982] | 95 | bool GvsPreprocessor::NextViewCell()
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| 96 | {
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[1996] | 97 | //if (mViewCellsManager->GetNumViewCells() == mProcessedViewCells)
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| 98 | // return false; // no more view cells
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| 99 |
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| 100 | if (mProcessedViewCells == (int)mViewCells.size())
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[1982] | 101 | return false; // no more view cells
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| 102 |
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[1996] | 103 | mCurrentViewCell = mViewCells[mProcessedViewCells];
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[1982] | 104 |
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[1996] | 105 | if (!mCurrentViewCell->GetMesh())
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[1990] | 106 | mViewCellsManager->CreateMesh(mCurrentViewCell);
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| 107 |
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[1996] | 108 | mGvsStats.mViewCellId = mCurrentViewCell->GetId();
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| 109 |
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| 110 | Debug << "vc: " << mCurrentViewCell->GetId() << endl;
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| 111 |
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| 112 | ++ mProcessedViewCells;
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[1982] | 113 |
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| 114 | return true;
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| 115 | }
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| 116 |
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| 117 |
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[1996] | 118 | int GvsPreprocessor::CheckDiscontinuity(const VssRay ¤tRay,
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| 119 | const Triangle3 &hitTriangle,
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| 120 | const VssRay &oldRay)
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[1460] | 121 | {
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[1932] | 122 | // the predicted hitpoint: we expect to hit the same mesh again
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| 123 | const Vector3 predictedHit = CalcPredictedHitPoint(currentRay, hitTriangle, oldRay);
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| 124 |
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| 125 | const float predictedLen = Magnitude(predictedHit - currentRay.mOrigin);
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| 126 | const float len = Magnitude(currentRay.mTermination - currentRay.mOrigin);
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| 127 |
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| 128 | // distance large => this is likely to be a discontinuity
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[1933] | 129 | #if 1
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[1932] | 130 | if ((predictedLen - len) > mThreshold)
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[1933] | 131 | #else // rather use relative distance
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| 132 | if ((predictedLen / len) > mThreshold)
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| 133 | #endif
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[1500] | 134 | {
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[1934] | 135 | //cout << "r";
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[1933] | 136 | // apply reverse sampling to find the gap
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[1500] | 137 | VssRay *newRay = ReverseSampling(currentRay, hitTriangle, oldRay);
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[1933] | 138 |
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| 139 | if (!newRay)
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[1996] | 140 | return 1;
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[1933] | 141 |
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[1572] | 142 | // set flag for visualization
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[2053] | 143 | //newRay->mFlags |= VssRay::ReverseSample;
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[1580] | 144 |
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[1977] | 145 | // if ray is not further processed => delete ray
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[1521] | 146 | if (!HandleRay(newRay))
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[1933] | 147 | {
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[2048] | 148 | //delete newRay;
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[1933] | 149 | }
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[1999] | 150 |
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[1996] | 151 | return 1;
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[1500] | 152 | }
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| 153 |
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[1996] | 154 | return 0;
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[1486] | 155 | }
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[1473] | 156 |
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[2053] | 157 |
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[1999] | 158 | bool GvsPreprocessor::HasContribution(VssRay &ray)
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[1486] | 159 | {
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[1999] | 160 | if (!ray.mTerminationObject)
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| 161 | return false;
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[1933] | 162 |
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[1999] | 163 | bool result;
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| 164 |
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[1977] | 165 | if (!mPerViewCell)
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| 166 | {
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[1999] | 167 | // store the rays + the intersected view cells
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| 168 | const bool storeViewCells = false; //GVS_DEBUG;
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| 169 |
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| 170 | mViewCellsManager->ComputeSampleContribution(ray,
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[1977] | 171 | true,
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[1999] | 172 | storeViewCells,
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[1990] | 173 | true);
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[1999] | 174 |
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| 175 | result = ray.mPvsContribution > 0;
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[1977] | 176 | }
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| 177 | else
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| 178 | {
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[1999] | 179 | Intersectable *obj = ray.mTerminationObject;
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| 180 |
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| 181 | if (!obj->mCounter)
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| 182 | {
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| 183 | obj->mCounter = 1;
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| 184 | mTrianglePvs.push_back(obj);
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| 185 |
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| 186 | /*mViewCellsManager->ComputeSampleContribution(ray,
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[1977] | 187 | true,
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[1990] | 188 | mCurrentViewCell,
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[1999] | 189 | true);*/
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| 190 |
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| 191 | result = true;
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| 192 | }
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| 193 | else
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| 194 | {
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| 195 | result = false;
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| 196 | }
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[1977] | 197 | }
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[1932] | 198 |
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[1999] | 199 | return result;
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| 200 | }
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| 201 |
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| 202 |
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| 203 | bool GvsPreprocessor::HandleRay(VssRay *vssRay)
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| 204 | {
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| 205 | if (!HasContribution(*vssRay))
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[1977] | 206 | return false;
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| 207 |
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[2005] | 208 | if (0 && GVS_DEBUG)
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[1990] | 209 | mVssRays.push_back(new VssRay(*vssRay));
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| 210 |
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[1977] | 211 | // add new ray to ray queue
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| 212 | mRayQueue.push(vssRay);
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| 213 |
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[1990] | 214 | ++ mGvsStats.mTotalContribution;
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[1533] | 215 |
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[1977] | 216 | return true;
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[1460] | 217 | }
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| 218 |
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[1500] | 219 |
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| 220 | /** Creates 3 new vertices for triangle vertex with specified index.
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[1489] | 221 | */
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[1932] | 222 | void GvsPreprocessor::CreateDisplacedVertices(VertexContainer &vertices,
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| 223 | const Triangle3 &hitTriangle,
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| 224 | const VssRay &ray,
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| 225 | const int index) const
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[1460] | 226 | {
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[1486] | 227 | const int indexU = (index + 1) % 3;
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| 228 | const int indexL = (index == 0) ? 2 : index - 1;
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| 229 |
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[1524] | 230 | const Vector3 a = hitTriangle.mVertices[index] - ray.GetOrigin();
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[1486] | 231 | const Vector3 b = hitTriangle.mVertices[indexU] - hitTriangle.mVertices[index];
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| 232 | const Vector3 c = hitTriangle.mVertices[index] - hitTriangle.mVertices[indexL];
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[1492] | 233 |
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[1533] | 234 | const float len = Magnitude(a);
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[1932] | 235 |
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[1523] | 236 | const Vector3 dir1 = Normalize(CrossProd(a, b)); //N((pi-xp)×(pi+1- pi));
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| 237 | const Vector3 dir2 = Normalize(CrossProd(a, c)); // N((pi-xp)×(pi- pi-1))
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[1524] | 238 | const Vector3 dir3 = DotProd(dir2, dir1) > 0 ? // N((pi-xp)×di,i-1+di,i+1×(pi-xp))
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| 239 | Normalize(dir2 + dir1) : Normalize(CrossProd(a, dir1) + CrossProd(dir2, a));
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[1492] | 240 |
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[1486] | 241 | // compute the new three hit points
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[1500] | 242 | // pi, i + 1: pi+ e·|pi-xp|·di, j
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[1932] | 243 | const Vector3 pt1 = hitTriangle.mVertices[index] + mEps * len * dir1;
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[1500] | 244 | // pi, i - 1: pi+ e·|pi-xp|·di, j
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[1932] | 245 | const Vector3 pt2 = hitTriangle.mVertices[index] + mEps * len * dir2;
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[1500] | 246 | // pi, i: pi+ e·|pi-xp|·di, j
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[1932] | 247 | const Vector3 pt3 = hitTriangle.mVertices[index] + mEps * len * dir3;
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[1489] | 248 |
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[1524] | 249 | vertices.push_back(pt2);
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| 250 | vertices.push_back(pt3);
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[1500] | 251 | vertices.push_back(pt1);
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[1489] | 252 | }
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| 253 |
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| 254 |
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[1500] | 255 | void GvsPreprocessor::EnlargeTriangle(VertexContainer &vertices,
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| 256 | const Triangle3 &hitTriangle,
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[1932] | 257 | const VssRay &ray) const
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[1500] | 258 | {
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[1932] | 259 | CreateDisplacedVertices(vertices, hitTriangle, ray, 0);
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| 260 | CreateDisplacedVertices(vertices, hitTriangle, ray, 1);
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| 261 | CreateDisplacedVertices(vertices, hitTriangle, ray, 2);
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[1500] | 262 | }
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[1492] | 263 |
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[1500] | 264 |
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[1932] | 265 | Vector3 GvsPreprocessor::CalcPredictedHitPoint(const VssRay &newRay,
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| 266 | const Triangle3 &hitTriangle,
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| 267 | const VssRay &oldRay) const
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[1489] | 268 | {
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[1932] | 269 | // find the intersection of the plane induced by the
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| 270 | // hit triangle with the new ray
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[1500] | 271 | Plane3 plane(hitTriangle.GetNormal(), hitTriangle.mVertices[0]);
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| 272 |
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| 273 | const Vector3 hitPt =
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| 274 | plane.FindIntersection(newRay.mTermination, newRay.mOrigin);
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| 275 |
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| 276 | return hitPt;
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| 277 | }
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| 278 |
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| 279 |
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| 280 | static bool EqualVisibility(const VssRay &a, const VssRay &b)
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| 281 | {
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| 282 | return a.mTerminationObject == b.mTerminationObject;
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| 283 | }
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| 284 |
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| 285 |
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| 286 | int GvsPreprocessor::SubdivideEdge(const Triangle3 &hitTriangle,
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| 287 | const Vector3 &p1,
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| 288 | const Vector3 &p2,
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[1932] | 289 | const VssRay &ray1,
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| 290 | const VssRay &ray2,
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[1500] | 291 | const VssRay &oldRay)
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[2048] | 292 | {
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| 293 | //cout <<"y"<<Magnitude(p1 - p2) << " ";
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[1996] | 294 | int castRays = 0;
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| 295 |
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[1990] | 296 | // cast reverse rays if necessary
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[1996] | 297 | castRays += CheckDiscontinuity(ray1, hitTriangle, oldRay);
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| 298 | castRays += CheckDiscontinuity(ray2, hitTriangle, oldRay);
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[1500] | 299 |
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[2017] | 300 | if (EqualVisibility(ray1, ray2) || (SqrMagnitude(p1 - p2) <= MIN_DIST))
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[1500] | 301 | {
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[1996] | 302 | return castRays;
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[1500] | 303 | }
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[1932] | 304 |
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[1990] | 305 | // the new subdivision point
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| 306 | const Vector3 p = (p1 + p2) * 0.5f;
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[2017] | 307 | //cout << "p: " << p << " " << p1 << " " << p2 << endl;
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[1990] | 308 | // cast ray into the new point
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| 309 | SimpleRay sray(oldRay.mOrigin, p - oldRay.mOrigin, SamplingStrategy::GVS, 1.0f);
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[1932] | 310 |
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[1996] | 311 | VssRay *newRay = mRayCaster->CastRay(sray, mViewCellsManager->GetViewSpaceBox(), !mPerViewCell);
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| 312 |
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| 313 | ++ castRays;
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[1580] | 314 |
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[1996] | 315 | if (!newRay) return castRays;
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[1580] | 316 |
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[2053] | 317 | //newRay->mFlags |= VssRay::BorderSample;
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[1990] | 318 |
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| 319 | // add new ray to queue
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| 320 | const bool enqueued = HandleRay(newRay);
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| 321 |
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| 322 | // subdivide further
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[1996] | 323 | castRays += SubdivideEdge(hitTriangle, p1, p, ray1, *newRay, oldRay);
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| 324 | castRays += SubdivideEdge(hitTriangle, p, p2, *newRay, ray2, oldRay);
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[1990] | 325 |
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| 326 | // this ray will not be further processed
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[2048] | 327 | //if (!enqueued) delete newRay;
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[1990] | 328 |
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[1996] | 329 | return castRays;
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[1500] | 330 | }
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| 331 |
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| 332 |
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| 333 | int GvsPreprocessor::AdaptiveBorderSampling(const VssRay ¤tRay)
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| 334 | {
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| 335 | Intersectable *tObj = currentRay.mTerminationObject;
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[2597] | 336 | // q matt: can this be possible
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| 337 | if (!tObj) return 0;
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| 338 |
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[1486] | 339 | Triangle3 hitTriangle;
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[1489] | 340 |
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| 341 | // other types not implemented yet
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| 342 | if (tObj->Type() == Intersectable::TRIANGLE_INTERSECTABLE)
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[2017] | 343 | hitTriangle = static_cast<TriangleIntersectable *>(tObj)->GetItem();
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[1522] | 344 | else
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[2601] | 345 | cout << "border sampling: " << Intersectable::GetTypeName(tObj) << " not yet implemented" << endl;
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[1489] | 346 |
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[2601] | 347 | //cout << "type: " << Intersectable::GetTypeName(tObj) << endl;
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| 348 |
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[1500] | 349 | VertexContainer enlargedTriangle;
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| 350 |
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| 351 | /// create 3 new hit points for each vertex
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| 352 | EnlargeTriangle(enlargedTriangle, hitTriangle, currentRay);
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| 353 |
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| 354 | /// create rays from sample points and handle them
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[1492] | 355 | SimpleRayContainer simpleRays;
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| 356 | simpleRays.reserve(9);
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[1486] | 357 |
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[1500] | 358 | VertexContainer::const_iterator vit, vit_end = enlargedTriangle.end();
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[1486] | 359 |
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[1500] | 360 | for (vit = enlargedTriangle.begin(); vit != vit_end; ++ vit)
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| 361 | {
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| 362 | const Vector3 rayDir = (*vit) - currentRay.GetOrigin();
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[1990] | 363 |
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[1883] | 364 | SimpleRay sr(currentRay.GetOrigin(), rayDir, SamplingStrategy::GVS, 1.0f);
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[1990] | 365 | simpleRays.AddRay(sr);
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[1500] | 366 | }
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[1522] | 367 |
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[1566] | 368 | if (0)
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| 369 | {
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[1932] | 370 | // visualize enlarged triangles
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[1566] | 371 | VizStruct dummy;
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| 372 | dummy.enlargedTriangle = new Polygon3(enlargedTriangle);
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| 373 | dummy.originalTriangle = hitTriangle;
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| 374 | vizContainer.push_back(dummy);
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| 375 | }
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| 376 |
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[1524] | 377 | // cast rays to triangle vertices and determine visibility
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[1489] | 378 | VssRayContainer vssRays;
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[1533] | 379 |
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[1932] | 380 | // don't cast double rays as we need only the forward rays
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[1996] | 381 | const bool castDoubleRays = !mPerViewCell;
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[1990] | 382 | // cannot prune invalid rays because we have to compare adjacent rays.
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[1932] | 383 | const bool pruneInvalidRays = false;
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| 384 |
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[1996] | 385 |
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| 386 | //////////
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| 387 | //-- fill up simple rays with random rays so we can cast 16
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| 388 |
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| 389 | //const int numRandomRays = 0;
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| 390 | const int numRandomRays = 16 - (int)simpleRays.size();
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| 391 | ViewCellBasedDistribution vcStrat(*this, mCurrentViewCell);
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| 392 |
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| 393 | GenerateRays(numRandomRays, vcStrat, simpleRays);
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| 394 |
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[2053] | 395 |
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[1996] | 396 | /////////////////////
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| 397 |
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[1990] | 398 | // keep origin for per view cell sampling
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[1996] | 399 | CastRays(simpleRays, vssRays, castDoubleRays, pruneInvalidRays);
|
---|
[1932] | 400 |
|
---|
[1996] | 401 | const int numBorderSamples = (int)vssRays.size() - numRandomRays;
|
---|
[1580] | 402 | // set flags
|
---|
[2053] | 403 | /*VssRayContainer::const_iterator rit, rit_end = vssRays.end();
|
---|
[1996] | 404 | for (rit = vssRays.begin(); rit != rit_end; ++ rit, ++ i)
|
---|
[2053] | 405 | (*rit)->mFlags |= VssRay::BorderSample;
|
---|
| 406 | */
|
---|
[1999] | 407 | int castRays = (int)simpleRays.size();
|
---|
| 408 |
|
---|
| 409 | VssRayContainer invalidSamples;
|
---|
| 410 |
|
---|
[2597] | 411 |
|
---|
[1932] | 412 | // handle rays
|
---|
[1999] | 413 | EnqueueRays(vssRays, invalidSamples);
|
---|
| 414 |
|
---|
[1500] | 415 | // recursivly subdivide each edge
|
---|
[1996] | 416 | for (int i = 0; i < numBorderSamples; ++ i)
|
---|
[1500] | 417 | {
|
---|
[1932] | 418 | castRays += SubdivideEdge(hitTriangle,
|
---|
| 419 | enlargedTriangle[i],
|
---|
[1996] | 420 | enlargedTriangle[(i + 1) % numBorderSamples],
|
---|
[1932] | 421 | *vssRays[i],
|
---|
[1996] | 422 | *vssRays[(i + 1) % numBorderSamples],
|
---|
[1932] | 423 | currentRay);
|
---|
[1500] | 424 | }
|
---|
[1999] | 425 |
|
---|
[1934] | 426 | mGvsStats.mBorderSamples += castRays;
|
---|
[1932] | 427 |
|
---|
[2053] | 428 | //CLEAR_CONTAINER(invalidSamples);
|
---|
[2048] | 429 |
|
---|
| 430 | //cout << "cast rays: " << castRays << endl;
|
---|
[1533] | 431 | return castRays;
|
---|
[1473] | 432 | }
|
---|
| 433 |
|
---|
| 434 |
|
---|
[1996] | 435 | bool GvsPreprocessor::GetPassingPoint(const VssRay ¤tRay,
|
---|
| 436 | const Triangle3 &occluder,
|
---|
| 437 | const VssRay &oldRay,
|
---|
| 438 | Vector3 &newPoint) const
|
---|
[1933] | 439 | {
|
---|
| 440 | //-- The plane p = (xp, hit(x), hit(xold)) is intersected
|
---|
| 441 | //-- with the newly found occluder (xold is the previous ray from
|
---|
| 442 | //-- which x was generated). On the intersecting line, we select a point
|
---|
| 443 | //-- pnew which lies just outside of the new triangle so the ray
|
---|
| 444 | //-- just passes through the gap
|
---|
| 445 |
|
---|
| 446 | const Plane3 plane(currentRay.GetOrigin(),
|
---|
| 447 | currentRay.GetTermination(),
|
---|
| 448 | oldRay.GetTermination());
|
---|
| 449 |
|
---|
| 450 | Vector3 pt1, pt2;
|
---|
| 451 |
|
---|
| 452 | const bool intersects = occluder.GetPlaneIntersection(plane, pt1, pt2);
|
---|
| 453 |
|
---|
| 454 | if (!intersects)
|
---|
[1996] | 455 | {
|
---|
[1999] | 456 | //cerr << "big error!! no intersection " << pt1 << " " << pt2 << endl;
|
---|
[1996] | 457 | return false;
|
---|
| 458 | }
|
---|
[1933] | 459 |
|
---|
| 460 | // get the intersection point on the old ray
|
---|
| 461 | const Plane3 triPlane(occluder.GetNormal(), occluder.mVertices[0]);
|
---|
| 462 |
|
---|
| 463 | const float t = triPlane.FindT(oldRay.mOrigin, oldRay.mTermination);
|
---|
| 464 | const Vector3 pt3 = oldRay.mOrigin + t * (oldRay.mTermination - oldRay.mOrigin);
|
---|
| 465 |
|
---|
| 466 | // Evaluate new hitpoint just outside the triangle
|
---|
| 467 | const float eps = mEps;
|
---|
[1990] | 468 |
|
---|
[1933] | 469 | // the point is chosen to be on the side closer to the original ray
|
---|
| 470 | if (Distance(pt1, pt3) < Distance(pt2, pt3))
|
---|
| 471 | {
|
---|
| 472 | newPoint = pt1 + eps * (pt1 - pt2);
|
---|
| 473 | }
|
---|
| 474 | else
|
---|
| 475 | {
|
---|
| 476 | newPoint = pt2 + eps * (pt2 - pt1);
|
---|
| 477 | }
|
---|
| 478 |
|
---|
[1934] | 479 | //cout << "passing point: " << newPoint << endl << endl;
|
---|
[1996] | 480 | return true;
|
---|
[1500] | 481 | }
|
---|
| 482 |
|
---|
| 483 |
|
---|
| 484 | VssRay *GvsPreprocessor::ReverseSampling(const VssRay ¤tRay,
|
---|
| 485 | const Triangle3 &hitTriangle,
|
---|
| 486 | const VssRay &oldRay)
|
---|
| 487 | {
|
---|
[1933] | 488 | // get triangle occluding the path to the hit mesh
|
---|
| 489 | Triangle3 occluder;
|
---|
| 490 | Intersectable *tObj = currentRay.mTerminationObject;
|
---|
[1934] | 491 |
|
---|
[1933] | 492 | // q: why can this happen?
|
---|
| 493 | if (!tObj)
|
---|
| 494 | return NULL;
|
---|
| 495 |
|
---|
| 496 | // other types not implemented yet
|
---|
| 497 | if (tObj->Type() == Intersectable::TRIANGLE_INTERSECTABLE)
|
---|
[2048] | 498 | {
|
---|
[2017] | 499 | occluder = static_cast<TriangleIntersectable *>(tObj)->GetItem();
|
---|
[2048] | 500 | }
|
---|
[1933] | 501 | else
|
---|
[2048] | 502 | {
|
---|
| 503 | cout << "reverse sampling: " << tObj->Type() << " not yet implemented" << endl;
|
---|
| 504 | }
|
---|
[1933] | 505 | // get a point which is passing just outside of the occluder
|
---|
[1996] | 506 | Vector3 newPoint;
|
---|
| 507 |
|
---|
| 508 | // why is there sometimes no intersecton found?
|
---|
| 509 | if (!GetPassingPoint(currentRay, occluder, oldRay, newPoint))
|
---|
| 510 | return NULL;
|
---|
| 511 |
|
---|
[1500] | 512 | const Vector3 predicted = CalcPredictedHitPoint(currentRay, hitTriangle, oldRay);
|
---|
| 513 |
|
---|
[1990] | 514 | Vector3 newDir, newOrigin;
|
---|
| 515 |
|
---|
[1932] | 516 | //-- Construct the mutated ray with xnew,
|
---|
| 517 | //-- dir = predicted(x)- pnew as direction vector
|
---|
[1990] | 518 | newDir = predicted - newPoint;
|
---|
[1932] | 519 |
|
---|
[1933] | 520 | // take xnew, p = intersect(viewcell, line(pnew, predicted(x)) as origin ?
|
---|
[1500] | 521 | // difficult to say!!
|
---|
[1935] | 522 | const float offset = 0.5f;
|
---|
[1990] | 523 | newOrigin = newPoint - newDir * offset;
|
---|
| 524 |
|
---|
| 525 | //////////////
|
---|
| 526 | //-- for per view cell sampling, we must check for intersection
|
---|
| 527 | //-- with the current view cell
|
---|
[1500] | 528 |
|
---|
[1990] | 529 | if (mPerViewCell)
|
---|
| 530 | {
|
---|
| 531 | // send ray to view cell
|
---|
| 532 | static Ray ray;
|
---|
| 533 | ray.Clear();
|
---|
| 534 | ray.Init(newOrigin, -newDir, Ray::LOCAL_RAY);
|
---|
| 535 |
|
---|
| 536 | //cout << "z";
|
---|
| 537 | // check if ray intersects view cell
|
---|
| 538 | if (!mCurrentViewCell->CastRay(ray))
|
---|
| 539 | return NULL;
|
---|
[1981] | 540 |
|
---|
[1990] | 541 | Ray::Intersection &hit = ray.intersections[0];
|
---|
| 542 |
|
---|
| 543 | //cout << "q";
|
---|
| 544 | // the ray starts from the view cell
|
---|
| 545 | newOrigin = ray.Extrap(hit.mT);
|
---|
| 546 | }
|
---|
[1981] | 547 |
|
---|
[1933] | 548 | const SimpleRay simpleRay(newOrigin, newDir, SamplingStrategy::GVS, 1.0f);
|
---|
[1571] | 549 |
|
---|
[1933] | 550 | VssRay *reverseRay =
|
---|
[1996] | 551 | mRayCaster->CastRay(simpleRay, mViewCellsManager->GetViewSpaceBox(), !mPerViewCell);
|
---|
[1933] | 552 |
|
---|
[1934] | 553 | ++ mGvsStats.mReverseSamples;
|
---|
[1933] | 554 |
|
---|
| 555 | return reverseRay;
|
---|
[1473] | 556 | }
|
---|
| 557 |
|
---|
[1489] | 558 |
|
---|
| 559 | int GvsPreprocessor::CastInitialSamples(const int numSamples,
|
---|
| 560 | const int sampleType)
|
---|
| 561 | {
|
---|
[1473] | 562 | const long startTime = GetTime();
|
---|
[1595] | 563 |
|
---|
[1489] | 564 | // generate simple rays
|
---|
| 565 | SimpleRayContainer simpleRays;
|
---|
[1990] | 566 |
|
---|
| 567 | ViewCellBasedDistribution vcStrat(*this, mCurrentViewCell);
|
---|
| 568 | GenerateRays(numSamples, vcStrat, simpleRays);
|
---|
| 569 |
|
---|
| 570 | //cout << "sr: " << simpleRays.size() << endl;
|
---|
[1489] | 571 | // generate vss rays
|
---|
[1473] | 572 | VssRayContainer samples;
|
---|
[1990] | 573 |
|
---|
[1996] | 574 | const bool castDoubleRays = !mPerViewCell;
|
---|
[1990] | 575 | const bool pruneInvalidRays = true;
|
---|
| 576 |
|
---|
[1996] | 577 | CastRays(simpleRays, samples, castDoubleRays, pruneInvalidRays);
|
---|
| 578 |
|
---|
[1999] | 579 | VssRayContainer invalidSamples;
|
---|
| 580 |
|
---|
[1489] | 581 | // add to ray queue
|
---|
[1999] | 582 | EnqueueRays(samples, invalidSamples);
|
---|
[1533] | 583 |
|
---|
[2053] | 584 | //CLEAR_CONTAINER(invalidSamples);
|
---|
[2597] | 585 | Debug << "generated " << numSamples << " samples in " << TimeDiff(startTime, GetTime()) * 1e-3 << " secs" << endl;
|
---|
[1990] | 586 | return (int)simpleRays.size();
|
---|
[1489] | 587 | }
|
---|
| 588 |
|
---|
| 589 |
|
---|
[1999] | 590 | void GvsPreprocessor::EnqueueRays(VssRayContainer &samples, VssRayContainer &invalidSamples)
|
---|
[1489] | 591 | {
|
---|
[1486] | 592 | // add samples to ray queue
|
---|
[1473] | 593 | VssRayContainer::const_iterator vit, vit_end = samples.end();
|
---|
[1576] | 594 | for (vit = samples.begin(); vit != vit_end; ++ vit)
|
---|
[1473] | 595 | {
|
---|
[1999] | 596 | VssRay *ray = *vit;
|
---|
| 597 |
|
---|
[2053] | 598 | HandleRay(ray);
|
---|
| 599 |
|
---|
| 600 | //if (!HandleRay(ray));
|
---|
| 601 | // invalidSamples.push_back(ray);
|
---|
[1460] | 602 | }
|
---|
| 603 | }
|
---|
| 604 |
|
---|
[1473] | 605 |
|
---|
[1990] | 606 | int GvsPreprocessor::ProcessQueue()
|
---|
[1460] | 607 | {
|
---|
[1533] | 608 | int castSamples = 0;
|
---|
[1990] | 609 | ++ mGvsStats.mGvsPass;
|
---|
[1545] | 610 |
|
---|
[2048] | 611 | while (!mRayQueue.empty())//&& (mGvsStats.mTotalSamples + castSamples < mTotalSamples) )
|
---|
[1990] | 612 | {
|
---|
[2597] | 613 | //cout << "queue size: " << mRayQueue.size() << endl;
|
---|
[1990] | 614 | // handle next ray
|
---|
| 615 | VssRay *ray = mRayQueue.top();
|
---|
| 616 | mRayQueue.pop();
|
---|
[1996] | 617 |
|
---|
[1990] | 618 | const int newSamples = AdaptiveBorderSampling(*ray);
|
---|
[1934] | 619 |
|
---|
[1990] | 620 | castSamples += newSamples;
|
---|
[2048] | 621 | //delete ray;
|
---|
[1473] | 622 | }
|
---|
| 623 |
|
---|
[2161] | 624 | /*if (mRayCaster->mVssRayPool.mIndex > mSamplesPerPass)
|
---|
[2048] | 625 | {
|
---|
| 626 | cout << "warning: new samples: " << castSamples << " " << "queue: " << (int)mRayQueue.size() << endl;
|
---|
| 627 | Debug << "warning: new samples: " << castSamples << " " << "queue: " << (int)mRayQueue.size() << endl;
|
---|
[2161] | 628 | }*/
|
---|
[2048] | 629 |
|
---|
[1533] | 630 | return castSamples;
|
---|
[1460] | 631 | }
|
---|
| 632 |
|
---|
[1473] | 633 |
|
---|
[1990] | 634 | void ExportVssRays(Exporter *exporter, const VssRayContainer &vssRays)
|
---|
[1460] | 635 | {
|
---|
[1990] | 636 | VssRayContainer vcRays, vcRays2, vcRays3;
|
---|
[1473] | 637 |
|
---|
[1990] | 638 | VssRayContainer::const_iterator rit, rit_end = vssRays.end();
|
---|
| 639 |
|
---|
| 640 | // prepare some rays for output
|
---|
| 641 | for (rit = vssRays.begin(); rit != rit_end; ++ rit)
|
---|
[1473] | 642 | {
|
---|
[1990] | 643 | //const float p = RandomValue(0.0f, (float)vssRays.size());
|
---|
[1545] | 644 |
|
---|
[1990] | 645 | if (1)//(p < raysOut)
|
---|
| 646 | {
|
---|
| 647 | if ((*rit)->mFlags & VssRay::BorderSample)
|
---|
| 648 | {
|
---|
| 649 | vcRays.push_back(*rit);
|
---|
| 650 | }
|
---|
| 651 | else if ((*rit)->mFlags & VssRay::ReverseSample)
|
---|
| 652 | {
|
---|
| 653 | vcRays2.push_back(*rit);
|
---|
| 654 | }
|
---|
| 655 | else
|
---|
| 656 | {
|
---|
| 657 | vcRays3.push_back(*rit);
|
---|
| 658 | }
|
---|
| 659 | }
|
---|
[1460] | 660 | }
|
---|
[1990] | 661 |
|
---|
[2005] | 662 | exporter->ExportRays(vcRays, RgbColor(1, 0, 0));
|
---|
| 663 | exporter->ExportRays(vcRays2, RgbColor(0, 1, 0));
|
---|
[2003] | 664 | exporter->ExportRays(vcRays3, RgbColor(1, 1, 1));
|
---|
[1990] | 665 | }
|
---|
| 666 |
|
---|
| 667 |
|
---|
[1999] | 668 | //void GvsPreprocessor::VisualizeViewCell(ViewCell *vc)
|
---|
| 669 | void GvsPreprocessor::VisualizeViewCell(const ObjectContainer &objects)
|
---|
[1990] | 670 | {
|
---|
| 671 | Intersectable::NewMail();
|
---|
| 672 |
|
---|
| 673 | Material m;
|
---|
[1528] | 674 |
|
---|
[1996] | 675 | char str[64]; sprintf(str, "pass%06d.wrl", mProcessedViewCells);
|
---|
[1990] | 676 |
|
---|
| 677 | Exporter *exporter = Exporter::GetExporter(str);
|
---|
| 678 | if (!exporter)
|
---|
| 679 | return;
|
---|
| 680 |
|
---|
[1999] | 681 | ObjectContainer::const_iterator oit, oit_end = objects.end();
|
---|
| 682 |
|
---|
| 683 | for (oit = objects.begin(); oit != oit_end; ++ oit)
|
---|
| 684 | {
|
---|
| 685 | Intersectable *intersect = *oit;
|
---|
| 686 |
|
---|
| 687 | m = RandomMaterial();
|
---|
| 688 | exporter->SetForcedMaterial(m);
|
---|
| 689 | exporter->ExportIntersectable(intersect);
|
---|
[1990] | 690 | }
|
---|
| 691 |
|
---|
| 692 | cout << "vssrays: " << (int)mVssRays.size() << endl;
|
---|
| 693 | ExportVssRays(exporter, mVssRays);
|
---|
| 694 |
|
---|
[2597] | 695 |
|
---|
[1990] | 696 | /////////////////
|
---|
| 697 | //-- export view cell geometry
|
---|
| 698 |
|
---|
[2597] | 699 | //exporter->SetWireframe();
|
---|
[1990] | 700 |
|
---|
| 701 | m.mDiffuseColor = RgbColor(0, 1, 0);
|
---|
| 702 | exporter->SetForcedMaterial(m);
|
---|
| 703 |
|
---|
[1999] | 704 | //mViewCellsManager->ExportViewCellGeometry(exporter, vc, NULL, NULL);
|
---|
| 705 | //mViewCellsManager->ExportViewCellGeometry(exporter, mCurrentViewCell, NULL, NULL);
|
---|
| 706 |
|
---|
| 707 | AxisAlignedBox3 bbox = mCurrentViewCell->GetMesh()->mBox;
|
---|
| 708 | exporter->ExportBox(bbox);
|
---|
[1990] | 709 | //exporter->SetFilled();
|
---|
| 710 |
|
---|
[2053] | 711 | delete exporter;
|
---|
[1460] | 712 | }
|
---|
| 713 |
|
---|
| 714 |
|
---|
[1982] | 715 | void GvsPreprocessor::VisualizeViewCells()
|
---|
| 716 | {
|
---|
[1996] | 717 | char str[64]; sprintf(str, "tmp/pass%06d_%04d-", mProcessedViewCells, mPass);
|
---|
[1982] | 718 |
|
---|
| 719 | // visualization
|
---|
| 720 | if (mGvsStats.mPassContribution > 0)
|
---|
| 721 | {
|
---|
| 722 | const bool exportRays = true;
|
---|
| 723 | const bool exportPvs = true;
|
---|
| 724 |
|
---|
| 725 | mViewCellsManager->ExportSingleViewCells(mObjects,
|
---|
| 726 | 10,
|
---|
| 727 | false,
|
---|
| 728 | exportPvs,
|
---|
| 729 | exportRays,
|
---|
| 730 | 1000,
|
---|
| 731 | str);
|
---|
| 732 | }
|
---|
| 733 |
|
---|
| 734 | // remove pass samples
|
---|
| 735 | ViewCellContainer::const_iterator vit, vit_end = mViewCellsManager->GetViewCells().end();
|
---|
| 736 |
|
---|
| 737 | for (vit = mViewCellsManager->GetViewCells().begin(); vit != vit_end; ++ vit)
|
---|
| 738 | {
|
---|
| 739 | (*vit)->DelRayRefs();
|
---|
| 740 | }
|
---|
| 741 | }
|
---|
| 742 |
|
---|
| 743 |
|
---|
[1990] | 744 | void GvsPreprocessor::ProcessViewCell()
|
---|
[1982] | 745 | {
|
---|
[2597] | 746 | // compute object that directly intersect view cell
|
---|
[1999] | 747 | IntersectWithViewCell();
|
---|
| 748 |
|
---|
[1990] | 749 | mGvsStats.mPerViewCellSamples = 0;
|
---|
[1996] | 750 | int oldContribution = mGvsStats.mTotalContribution;
|
---|
[1990] | 751 | int passSamples = 0;
|
---|
[1982] | 752 |
|
---|
[2597] | 753 | //if (mCurrentViewCell->GetId() != 82975 )return;
|
---|
| 754 |
|
---|
[1996] | 755 | //while (mGvsStats.mPerViewCellSamples < mTotalSamples)
|
---|
| 756 | while (1)
|
---|
[1982] | 757 | {
|
---|
[2048] | 758 | mRayCaster->InitPass();
|
---|
| 759 |
|
---|
[1990] | 760 | // Ray queue empty =>
|
---|
| 761 | // cast a number of uniform samples to fill ray queue
|
---|
| 762 | int newSamples = CastInitialSamples(mInitialSamples, mSamplingType);
|
---|
[1982] | 763 |
|
---|
[1990] | 764 | if (!mOnlyRandomSampling)
|
---|
| 765 | newSamples += ProcessQueue();
|
---|
[2003] | 766 |
|
---|
[2597] | 767 | passSamples += newSamples;
|
---|
| 768 | mGvsStats.mPerViewCellSamples += newSamples;
|
---|
| 769 |
|
---|
[2048] | 770 | if (passSamples >= mGvsSamplesPerPass)
|
---|
[1982] | 771 | {
|
---|
| 772 | ++ mPass;
|
---|
[1990] | 773 | mGvsStats.mPassContribution = mGvsStats.mTotalContribution - oldContribution;
|
---|
| 774 |
|
---|
[1982] | 775 | ////////
|
---|
| 776 | //-- stats
|
---|
| 777 |
|
---|
| 778 | mGvsStats.mPass = mPass;
|
---|
| 779 |
|
---|
[1996] | 780 | cout << "\nPass " << mPass << " #samples: " << mGvsStats.mPerViewCellSamples << endl;
|
---|
| 781 | cout << "contribution=" << mGvsStats.mPassContribution << " (of " << mMinContribution << ")" << endl;
|
---|
[1990] | 782 |
|
---|
[1996] | 783 | // termination criterium
|
---|
| 784 | if (mGvsStats.mPassContribution < mMinContribution)
|
---|
| 785 | break;
|
---|
| 786 |
|
---|
[1990] | 787 | // reset
|
---|
| 788 | oldContribution = mGvsStats.mTotalContribution;
|
---|
| 789 | mGvsStats.mPassContribution = 0;
|
---|
| 790 | passSamples = 0;
|
---|
[1982] | 791 | }
|
---|
| 792 | }
|
---|
| 793 | }
|
---|
| 794 |
|
---|
| 795 |
|
---|
[1996] | 796 | void GvsPreprocessor::CompileViewCellsList()
|
---|
| 797 | {
|
---|
[2598] | 798 | ViewCellPointsList *vcPoints = mViewCellsManager->GetViewCellPointsList();
|
---|
[2048] | 799 |
|
---|
[2053] | 800 |
|
---|
| 801 | int i = 0;
|
---|
[2597] | 802 |
|
---|
[2048] | 803 | if (!vcPoints->empty())
|
---|
| 804 | {
|
---|
[2597] | 805 | cout << "processing view cell list" << endl;
|
---|
[2053] | 806 |
|
---|
[2048] | 807 | vector<ViewCellPoints *>::const_iterator vit, vit_end = vcPoints->end();
|
---|
| 808 |
|
---|
| 809 | for (vit = vcPoints->begin(); vit != vit_end; ++ vit)
|
---|
[2053] | 810 | {//cout << i ++ << " " << (*vit)->first->GetId() << endl;
|
---|
[2048] | 811 | mViewCells.push_back((*vit)->first);
|
---|
| 812 | }
|
---|
| 813 |
|
---|
| 814 | return;
|
---|
| 815 | }
|
---|
| 816 |
|
---|
[1996] | 817 | while ((int)mViewCells.size() < mMaxViewCells)
|
---|
| 818 | {
|
---|
| 819 | if (0)
|
---|
| 820 | {
|
---|
| 821 | mViewCells.push_back(mViewCellsManager->GetViewCell((int)mViewCells.size()));
|
---|
[1999] | 822 | continue;
|
---|
[1996] | 823 | }
|
---|
[1999] | 824 |
|
---|
| 825 | // HACK
|
---|
| 826 | const int tries = 10000;
|
---|
| 827 | int i = 0;
|
---|
| 828 |
|
---|
| 829 | for (i = 0; i < tries; ++ i)
|
---|
[1996] | 830 | {
|
---|
[1999] | 831 | const int idx = (int)RandomValue(0.0f, (float)mViewCellsManager->GetNumViewCells() - 0.5f);
|
---|
| 832 |
|
---|
| 833 | ViewCell *viewCell = mViewCellsManager->GetViewCell(idx);
|
---|
[1996] | 834 |
|
---|
[1999] | 835 | if (!viewCell->Mailed())
|
---|
[1996] | 836 | {
|
---|
[1999] | 837 | viewCell->Mail();
|
---|
| 838 | break;
|
---|
| 839 | }
|
---|
[2597] | 840 |
|
---|
[1999] | 841 | mViewCells.push_back(viewCell);
|
---|
| 842 | }
|
---|
[1996] | 843 |
|
---|
[1999] | 844 | if (i == tries)
|
---|
| 845 | {
|
---|
| 846 | cerr << "big error! no view cell found" << endl;
|
---|
| 847 | return;
|
---|
| 848 | }
|
---|
| 849 | }
|
---|
| 850 | }
|
---|
[1996] | 851 |
|
---|
[1999] | 852 |
|
---|
| 853 | void GvsPreprocessor::IntersectWithViewCell()
|
---|
| 854 | {
|
---|
| 855 | mCurrentViewCell->GetMesh()->ComputeBoundingBox();
|
---|
| 856 | AxisAlignedBox3 box = mCurrentViewCell->GetMesh()->mBox;
|
---|
[2544] | 857 |
|
---|
[1999] | 858 | vector<KdLeaf *> leaves;
|
---|
| 859 | mKdTree->GetBoxIntersections(box, leaves);
|
---|
| 860 |
|
---|
| 861 | vector<KdLeaf *>::const_iterator lit, lit_end = leaves.end();
|
---|
| 862 |
|
---|
| 863 | for (lit = leaves.begin(); lit != leaves.end(); ++ lit)
|
---|
| 864 | {
|
---|
| 865 | KdLeaf *leaf = *lit;
|
---|
| 866 | ObjectContainer::const_iterator oit, oit_end = leaf->mObjects.end();
|
---|
| 867 |
|
---|
| 868 | for (oit = leaf->mObjects.begin(); oit != oit_end; ++ oit)
|
---|
| 869 | {
|
---|
[2017] | 870 | TriangleIntersectable *triObj = static_cast<TriangleIntersectable *>(*oit);
|
---|
[1999] | 871 |
|
---|
| 872 | if (box.Intersects(triObj->GetItem()))
|
---|
[1996] | 873 | {
|
---|
[1999] | 874 | if (!triObj->mCounter)
|
---|
| 875 | {
|
---|
| 876 | triObj->mCounter = 1;
|
---|
| 877 | mTrianglePvs.push_back(triObj);
|
---|
| 878 | }
|
---|
[1996] | 879 | }
|
---|
| 880 | }
|
---|
| 881 | }
|
---|
| 882 | }
|
---|
| 883 |
|
---|
| 884 |
|
---|
[1990] | 885 | void GvsPreprocessor::PerViewCellComputation()
|
---|
[1982] | 886 | {
|
---|
[1999] | 887 | // hack: reset counter
|
---|
| 888 | ObjectContainer::const_iterator oit, oit_end = mObjects.end();
|
---|
| 889 |
|
---|
| 890 | for (oit = mObjects.begin(); oit != oit_end; ++ oit)
|
---|
| 891 | {
|
---|
| 892 | (*oit)->mCounter = 0;
|
---|
| 893 | }
|
---|
[2053] | 894 | int dummy = 0;
|
---|
[2048] | 895 | while (NextViewCell())// && (dummy < 3))
|
---|
[2053] | 896 | {
|
---|
| 897 | //++ dummy;
|
---|
| 898 | //if (mProcessedViewCells < 53) continue;
|
---|
| 899 |
|
---|
[2048] | 900 | long startTime = GetTime();
|
---|
[1999] | 901 | cout << "\n***********************\n"
|
---|
| 902 | << "processing view cell " << mProcessedViewCells
|
---|
| 903 | << " (id: " << mCurrentViewCell->GetId() << ")" << endl;
|
---|
[1982] | 904 |
|
---|
[1990] | 905 | // compute the pvs of the current view cell
|
---|
| 906 | ProcessViewCell();
|
---|
| 907 |
|
---|
[1999] | 908 | //mGvsStats.mTrianglePvs = mCurrentViewCell->GetPvs().GetSize();
|
---|
| 909 | mGvsStats.mTrianglePvs = (int)mTrianglePvs.size();
|
---|
[2003] | 910 | mGvsStats.mTotalTrianglePvs += mGvsStats.mTrianglePvs;
|
---|
[1996] | 911 |
|
---|
[1999] | 912 | ObjectContainer objectPvs;
|
---|
| 913 |
|
---|
[1990] | 914 | // exchange triangle pvs with objects
|
---|
[1999] | 915 | //UpdatePvs(mCurrentViewCell);
|
---|
[2601] | 916 | GetObjectPvs(objectPvs);
|
---|
[1990] | 917 |
|
---|
[2601] | 918 | // add pvs
|
---|
| 919 | ObjectContainer::const_iterator it, it_end = objectPvs.end();
|
---|
| 920 |
|
---|
| 921 | for (it = objectPvs.begin(); it != it_end; ++ it)
|
---|
| 922 | {
|
---|
| 923 | mCurrentViewCell->GetPvs().AddSampleDirty(*it, 1.0f);
|
---|
| 924 | }
|
---|
| 925 |
|
---|
[2048] | 926 | cout << "triangle pvs of " << (int)mTrianglePvs.size()
|
---|
| 927 | << " was converted to object pvs of " << (int)objectPvs.size() << endl;
|
---|
[2601] | 928 |
|
---|
[1990] | 929 |
|
---|
[1982] | 930 | ////////
|
---|
| 931 | //-- stats
|
---|
[1990] | 932 |
|
---|
[1996] | 933 | mGvsStats.mViewCells = mProcessedViewCells;//mPass;
|
---|
[1999] | 934 | //mGvsStats.mPerViewCellPvs = mCurrentViewCell->GetPvs().GetSize();
|
---|
[2003] | 935 | mGvsStats.mPerViewCellPvs = (int)objectPvs.size();
|
---|
[1999] | 936 |
|
---|
| 937 | mGvsStats.mTotalPvs += mGvsStats.mPerViewCellPvs;
|
---|
[1990] | 938 | mGvsStats.mTotalSamples += mGvsStats.mPerViewCellSamples;
|
---|
[1982] | 939 |
|
---|
[2003] | 940 | // timing
|
---|
| 941 | const long currentTime = GetTime();
|
---|
| 942 |
|
---|
[2048] | 943 | mGvsStats.mTimePerViewCell = TimeDiff(startTime, currentTime) * 1e-3f;
|
---|
[2003] | 944 | mGvsStats.mTotalTime += mGvsStats.mTimePerViewCell;
|
---|
| 945 |
|
---|
[2048] | 946 | //lastTime = currentTime;
|
---|
[2003] | 947 |
|
---|
[1982] | 948 | mGvsStats.Stop();
|
---|
| 949 | mGvsStats.Print(mGvsStatsStream);
|
---|
[1996] | 950 |
|
---|
[2003] | 951 | mTrianglePvs.clear();
|
---|
[1999] | 952 |
|
---|
| 953 | if (GVS_DEBUG)
|
---|
| 954 | {
|
---|
| 955 | //VisualizeViewCell(mCurrentViewCell);
|
---|
| 956 | VisualizeViewCell(objectPvs);
|
---|
| 957 | CLEAR_CONTAINER(mVssRays);
|
---|
| 958 | }
|
---|
| 959 |
|
---|
[1996] | 960 | // is this really necessary?
|
---|
[2048] | 961 | //ClearRayQueue();
|
---|
[2053] | 962 | cout << "finished" << endl;
|
---|
[2048] | 963 | if (mEvaluatePixelError || mExportVisibility)
|
---|
| 964 | {
|
---|
| 965 | StorePvs(objectPvs);
|
---|
| 966 | }
|
---|
[1990] | 967 | }
|
---|
| 968 | }
|
---|
[1982] | 969 |
|
---|
[1990] | 970 |
|
---|
[2048] | 971 | void GvsPreprocessor::StorePvs(const ObjectContainer &objectPvs)
|
---|
| 972 | {
|
---|
| 973 | ObjectContainer::const_iterator oit, oit_end = objectPvs.end();
|
---|
| 974 |
|
---|
| 975 | for (oit = objectPvs.begin(); oit != oit_end; ++ oit)
|
---|
| 976 | {
|
---|
| 977 | mCurrentViewCell->GetPvs().AddSample(*oit, 1);
|
---|
| 978 | }
|
---|
| 979 | }
|
---|
| 980 |
|
---|
[2053] | 981 | /*
|
---|
[2048] | 982 | void GvsPreprocessor::ComputeRenderError()
|
---|
| 983 | {
|
---|
| 984 | cout << "computing gvs render error" << endl;
|
---|
| 985 | vector<ViewCellPoints *> *vcPoints = mViewCellsManager->GetViewCellPoints();
|
---|
| 986 |
|
---|
| 987 | vector<ViewCellPoints *>::const_iterator vit, vit_end = vcPoints->end();
|
---|
| 988 |
|
---|
| 989 | for (vit = vcPoints->begin(); vit != vit_end; ++ vit)
|
---|
| 990 | {
|
---|
| 991 | ViewCellPoints *vcPoints = *vit;
|
---|
| 992 |
|
---|
| 993 | renderer->EvalPvsStat(vcPoints->second);
|
---|
| 994 |
|
---|
| 995 | mStats <<
|
---|
| 996 | "#ViewCell\n" << vcPoints->first->GetId() << endl <<
|
---|
| 997 | "#AvgPvsRenderError\n" <<renderer->mPvsStat.GetAvgError() << endl <<
|
---|
| 998 | "#AvgPixelError\n" << renderer->GetAvgPixelError() << endl <<
|
---|
| 999 | "#MaxPixelError\n" << renderer->GetMaxPixelError() << endl <<
|
---|
| 1000 | "#MaxPvsRenderError\n" << renderer->mPvsStat.GetMaxError() << endl <<
|
---|
| 1001 | "#ErrorFreeFrames\n" << renderer->mPvsStat.GetErrorFreeFrames() << endl <<
|
---|
| 1002 | "#AvgRenderPvs\n" << renderer->mPvsStat.GetAvgPvs() << endl;
|
---|
| 1003 | }
|
---|
| 1004 | }
|
---|
[2053] | 1005 | */
|
---|
[2048] | 1006 |
|
---|
[1990] | 1007 | void GvsPreprocessor::UpdatePvs(ViewCell *currentViewCell)
|
---|
| 1008 | {
|
---|
| 1009 | ObjectPvs newPvs;
|
---|
| 1010 | BvhLeaf::NewMail();
|
---|
| 1011 |
|
---|
| 1012 | ObjectPvsIterator pit = currentViewCell->GetPvs().GetIterator();
|
---|
| 1013 |
|
---|
| 1014 | // output PVS of view cell
|
---|
| 1015 | while (pit.HasMoreEntries())
|
---|
| 1016 | {
|
---|
[2117] | 1017 | Intersectable *intersect = pit.Next();
|
---|
[1990] | 1018 |
|
---|
| 1019 | BvhLeaf *bv = intersect->mBvhLeaf;
|
---|
| 1020 |
|
---|
| 1021 | if (!bv || bv->Mailed())
|
---|
| 1022 | continue;
|
---|
| 1023 |
|
---|
| 1024 | bv->Mail();
|
---|
| 1025 |
|
---|
| 1026 | //m.mDiffuseColor = RgbColor(1, 0, 0);
|
---|
| 1027 | newPvs.AddSampleDirty(bv, 1.0f);
|
---|
[1982] | 1028 | }
|
---|
[1990] | 1029 |
|
---|
| 1030 | newPvs.SimpleSort();
|
---|
| 1031 |
|
---|
| 1032 | currentViewCell->SetPvs(newPvs);
|
---|
[1982] | 1033 | }
|
---|
| 1034 |
|
---|
[1999] | 1035 |
|
---|
| 1036 | void GvsPreprocessor::GetObjectPvs(ObjectContainer &objectPvs) const
|
---|
| 1037 | {
|
---|
[2053] | 1038 | objectPvs.reserve((int)mTrianglePvs.size());
|
---|
| 1039 |
|
---|
[1999] | 1040 | BvhLeaf::NewMail();
|
---|
[1982] | 1041 |
|
---|
[1999] | 1042 | ObjectContainer::const_iterator oit, oit_end = mTrianglePvs.end();
|
---|
| 1043 |
|
---|
| 1044 | for (oit = mTrianglePvs.begin(); oit != oit_end; ++ oit)
|
---|
| 1045 | {
|
---|
| 1046 | Intersectable *intersect = *oit;
|
---|
| 1047 |
|
---|
| 1048 | BvhLeaf *bv = intersect->mBvhLeaf;
|
---|
| 1049 |
|
---|
[2053] | 1050 | // hack: reset counter
|
---|
| 1051 | (*oit)->mCounter = 0;
|
---|
| 1052 |
|
---|
[1999] | 1053 | if (!bv || bv->Mailed())
|
---|
| 1054 | continue;
|
---|
| 1055 |
|
---|
| 1056 | bv->Mail();
|
---|
| 1057 |
|
---|
| 1058 | objectPvs.push_back(bv);
|
---|
| 1059 | }
|
---|
| 1060 | }
|
---|
| 1061 |
|
---|
| 1062 |
|
---|
[1990] | 1063 | void GvsPreprocessor::GlobalComputation()
|
---|
| 1064 | {
|
---|
| 1065 | int passSamples = 0;
|
---|
| 1066 | int oldContribution = 0;
|
---|
| 1067 |
|
---|
| 1068 | while (mGvsStats.mTotalSamples < mTotalSamples)
|
---|
| 1069 | {
|
---|
[2048] | 1070 | mRayCaster->InitPass();
|
---|
[1990] | 1071 | // Ray queue empty =>
|
---|
| 1072 | // cast a number of uniform samples to fill ray queue
|
---|
| 1073 | int newSamples = CastInitialSamples(mInitialSamples, mSamplingType);
|
---|
| 1074 |
|
---|
| 1075 | if (!mOnlyRandomSampling)
|
---|
| 1076 | newSamples += ProcessQueue();
|
---|
| 1077 |
|
---|
| 1078 | passSamples += newSamples;
|
---|
| 1079 | mGvsStats.mTotalSamples += newSamples;
|
---|
| 1080 |
|
---|
[2048] | 1081 | if (passSamples % (mGvsSamplesPerPass + 1) == mGvsSamplesPerPass)
|
---|
[1990] | 1082 | {
|
---|
| 1083 | ++ mPass;
|
---|
| 1084 |
|
---|
| 1085 | mGvsStats.mPassContribution = mGvsStats.mTotalContribution - oldContribution;
|
---|
| 1086 |
|
---|
| 1087 | ////////
|
---|
| 1088 | //-- stats
|
---|
| 1089 |
|
---|
| 1090 | //cout << "\nPass " << mPass << " #samples: " << mGvsStats.mTotalSamples << " of " << mTotalSamples << endl;
|
---|
| 1091 | mGvsStats.mPass = mPass;
|
---|
| 1092 | mGvsStats.Stop();
|
---|
| 1093 | mGvsStats.Print(mGvsStatsStream);
|
---|
| 1094 |
|
---|
| 1095 | // reset
|
---|
| 1096 | oldContribution = mGvsStats.mTotalContribution;
|
---|
| 1097 | mGvsStats.mPassContribution = 0;
|
---|
| 1098 | passSamples = 0;
|
---|
| 1099 |
|
---|
| 1100 | if (GVS_DEBUG)
|
---|
| 1101 | VisualizeViewCells();
|
---|
| 1102 | }
|
---|
| 1103 | }
|
---|
| 1104 | }
|
---|
| 1105 |
|
---|
| 1106 |
|
---|
[1489] | 1107 | bool GvsPreprocessor::ComputeVisibility()
|
---|
[1460] | 1108 | {
|
---|
[1533] | 1109 | cout << "Gvs Preprocessor started\n" << flush;
|
---|
[1545] | 1110 | const long startTime = GetTime();
|
---|
[1533] | 1111 |
|
---|
[1990] | 1112 | //Randomize(0);
|
---|
[1934] | 1113 | mGvsStats.Reset();
|
---|
| 1114 | mGvsStats.Start();
|
---|
[1545] | 1115 |
|
---|
[1486] | 1116 | if (!mLoadViewCells)
|
---|
[1563] | 1117 | {
|
---|
| 1118 | /// construct the view cells from the scratch
|
---|
| 1119 | ConstructViewCells();
|
---|
[1580] | 1120 | // reset pvs already gathered during view cells construction
|
---|
| 1121 | mViewCellsManager->ResetPvs();
|
---|
[1563] | 1122 | cout << "finished view cell construction" << endl;
|
---|
[1486] | 1123 | }
|
---|
[1571] | 1124 | else if (0)
|
---|
[1563] | 1125 | {
|
---|
[1551] | 1126 | //-- test successful view cells loading by exporting them again
|
---|
| 1127 | VssRayContainer dummies;
|
---|
| 1128 | mViewCellsManager->Visualize(mObjects, dummies);
|
---|
[1563] | 1129 | mViewCellsManager->ExportViewCells("test.xml.gz", mViewCellsManager->GetExportPvs(), mObjects);
|
---|
[1551] | 1130 | }
|
---|
[1460] | 1131 |
|
---|
[1934] | 1132 | mGvsStats.Stop();
|
---|
| 1133 | mGvsStats.Print(mGvsStatsStream);
|
---|
| 1134 |
|
---|
[1982] | 1135 | if (mPerViewCell)
|
---|
[1473] | 1136 | {
|
---|
[2597] | 1137 | // provide list of view cells to compute
|
---|
[1996] | 1138 | CompileViewCellsList();
|
---|
[2597] | 1139 |
|
---|
| 1140 | // start per view cell gvs
|
---|
[2048] | 1141 | PerViewCellComputation();
|
---|
[1996] | 1142 |
|
---|
[2048] | 1143 | if (mEvaluatePixelError)
|
---|
| 1144 | {
|
---|
| 1145 | ComputeRenderError();
|
---|
| 1146 | }
|
---|
[1460] | 1147 | }
|
---|
[1982] | 1148 | else
|
---|
| 1149 | {
|
---|
| 1150 | GlobalComputation();
|
---|
| 1151 | }
|
---|
[1460] | 1152 |
|
---|
[1934] | 1153 | cout << "cast " << 2 * mGvsStats.mTotalSamples / (1e3f * TimeDiff(startTime, GetTime())) << "M rays/s" << endl;
|
---|
[1545] | 1154 |
|
---|
[1934] | 1155 | if (GVS_DEBUG)
|
---|
| 1156 | {
|
---|
| 1157 | Visualize();
|
---|
| 1158 | CLEAR_CONTAINER(mVssRays);
|
---|
| 1159 | }
|
---|
[2048] | 1160 |
|
---|
| 1161 | // export the preprocessed information to a file
|
---|
| 1162 | if (0 && mExportVisibility)
|
---|
| 1163 | {
|
---|
| 1164 | ExportPreprocessedData(mVisibilityFileName);
|
---|
| 1165 | }
|
---|
[1934] | 1166 |
|
---|
[1473] | 1167 | return true;
|
---|
[1460] | 1168 | }
|
---|
| 1169 |
|
---|
[1522] | 1170 |
|
---|
[2048] | 1171 | void GvsPreprocessor::DeterminePvsObjects(VssRayContainer &rays)
|
---|
| 1172 | {
|
---|
[2187] | 1173 | // store triangle directly
|
---|
[2048] | 1174 | mViewCellsManager->DeterminePvsObjects(rays, true);
|
---|
| 1175 | }
|
---|
| 1176 |
|
---|
| 1177 |
|
---|
[1522] | 1178 | void GvsPreprocessor::Visualize()
|
---|
| 1179 | {
|
---|
| 1180 | Exporter *exporter = Exporter::GetExporter("gvs.wrl");
|
---|
| 1181 |
|
---|
| 1182 | if (!exporter)
|
---|
| 1183 | return;
|
---|
| 1184 |
|
---|
| 1185 | vector<VizStruct>::const_iterator vit, vit_end = vizContainer.end();
|
---|
[1999] | 1186 |
|
---|
[1522] | 1187 | for (vit = vizContainer.begin(); vit != vit_end; ++ vit)
|
---|
| 1188 | {
|
---|
[1524] | 1189 | exporter->SetWireframe();
|
---|
[1522] | 1190 | exporter->ExportPolygon((*vit).enlargedTriangle);
|
---|
| 1191 | //Material m;
|
---|
[1524] | 1192 | exporter->SetFilled();
|
---|
| 1193 | Polygon3 poly = Polygon3((*vit).originalTriangle);
|
---|
| 1194 | exporter->ExportPolygon(&poly);
|
---|
[1522] | 1195 | }
|
---|
| 1196 |
|
---|
[1933] | 1197 | VssRayContainer::const_iterator rit, rit_end = mVssRays.end();
|
---|
[1999] | 1198 |
|
---|
[1933] | 1199 | for (rit = mVssRays.begin(); rit != rit_end; ++ rit)
|
---|
| 1200 | {
|
---|
| 1201 | Intersectable *obj = (*rit)->mTerminationObject;
|
---|
| 1202 | exporter->ExportIntersectable(obj);
|
---|
| 1203 | }
|
---|
| 1204 |
|
---|
[1990] | 1205 | ExportVssRays(exporter, mVssRays);
|
---|
| 1206 |
|
---|
[1522] | 1207 | delete exporter;
|
---|
[1460] | 1208 | }
|
---|
[1522] | 1209 |
|
---|
[1934] | 1210 |
|
---|
| 1211 | void GvsStatistics::Print(ostream &app) const
|
---|
| 1212 | {
|
---|
[2003] | 1213 | app << "#ViewCells\n" << mViewCells << endl;
|
---|
[1996] | 1214 | app << "#ViewCellId\n" << mViewCellId << endl;
|
---|
[2003] | 1215 | app << "#TotalTime\n" << mTotalTime << endl;
|
---|
| 1216 | app << "#TimePerViewCell\n" << mTimePerViewCell << endl;;
|
---|
| 1217 |
|
---|
| 1218 | app << "#RaysPerSec\n" << RaysPerSec() << endl;
|
---|
| 1219 |
|
---|
| 1220 | app << "#TrianglePvs\n" << mTrianglePvs << endl;
|
---|
| 1221 | app << "#TotalTrianglePvs\n" << mTotalTrianglePvs << endl;
|
---|
| 1222 |
|
---|
| 1223 | app << "#PerViewCellPvs\n" << mPerViewCellPvs << endl;
|
---|
| 1224 | app << "#TotalPvs\n" << mTotalPvs << endl;
|
---|
| 1225 |
|
---|
| 1226 | app << "#PerViewCellSamples\n" << mPerViewCellSamples << endl;
|
---|
[1934] | 1227 | app << "#TotalSamples\n" << mTotalSamples << endl;
|
---|
| 1228 | app << "#SamplesContri\n" << mTotalContribution << endl;
|
---|
[2003] | 1229 |
|
---|
| 1230 | //app << "#ReverseSamples\n" << mReverseSamples << endl;
|
---|
| 1231 | //app << "#BorderSamples\n" << mBorderSamples << endl;
|
---|
| 1232 |
|
---|
| 1233 | //app << "#Pass\n" << mPass << endl;
|
---|
| 1234 | //app << "#ScDiff\n" << mPassContribution << endl;
|
---|
| 1235 | //app << "#GvsRuns\n" << mGvsPass << endl;
|
---|
| 1236 |
|
---|
| 1237 | app << endl;
|
---|
[1883] | 1238 | }
|
---|
[1934] | 1239 |
|
---|
| 1240 |
|
---|
| 1241 | }
|
---|