[372] | 1 | #include "SceneGraph.h"
|
---|
| 2 | #include "KdTree.h"
|
---|
| 3 | #include "SamplingPreprocessor.h"
|
---|
| 4 | #include "X3dExporter.h"
|
---|
| 5 | #include "Environment.h"
|
---|
| 6 | #include "MutualVisibility.h"
|
---|
| 7 | #include "Polygon3.h"
|
---|
| 8 | #include "ViewCell.h"
|
---|
[439] | 9 | #include "ViewCellsManager.h"
|
---|
[406] | 10 | #include "RenderSimulator.h"
|
---|
[1743] | 11 | #include "VssRay.h"
|
---|
[372] | 12 |
|
---|
[860] | 13 |
|
---|
[1221] | 14 |
|
---|
[863] | 15 | namespace GtpVisibilityPreprocessor {
|
---|
[860] | 16 |
|
---|
| 17 |
|
---|
[1292] | 18 | SamplingPreprocessor::SamplingPreprocessor(): Preprocessor(), mPass(0)
|
---|
[372] | 19 | {
|
---|
| 20 | // this should increase coherence of the samples
|
---|
[1199] | 21 | Environment::GetSingleton()->GetIntValue("SamplingPreprocessor.samplesPerPass", mSamplesPerPass);
|
---|
| 22 | Environment::GetSingleton()->GetIntValue("SamplingPreprocessor.totalSamples", mTotalSamples);
|
---|
| 23 |
|
---|
[372] | 24 | mStats.open("stats.log");
|
---|
| 25 | }
|
---|
| 26 |
|
---|
| 27 | SamplingPreprocessor::~SamplingPreprocessor()
|
---|
| 28 | {
|
---|
[1199] | 29 | CLEAR_CONTAINER(mSampleRays);
|
---|
| 30 | CLEAR_CONTAINER(mVssSampleRays);
|
---|
[372] | 31 | }
|
---|
| 32 |
|
---|
[444] | 33 |
|
---|
[1520] | 34 |
|
---|
[372] | 35 |
|
---|
[429] | 36 | void
|
---|
[372] | 37 | SamplingPreprocessor::VerifyVisibility(Intersectable *object)
|
---|
| 38 | {
|
---|
[1579] | 39 | #if 0 // 6.10. 2006 due to kdPVS removal from intersectable
|
---|
| 40 | // mail all nodes from the pvs
|
---|
[1199] | 41 | Intersectable::NewMail();
|
---|
| 42 | KdPvsMap::iterator i = object->mKdPvs.mEntries.begin();
|
---|
| 43 | for (; i != object->mKdPvs.mEntries.end(); i++) {
|
---|
| 44 | KdNode *node = (*i).first;
|
---|
| 45 | node->Mail();
|
---|
| 46 | }
|
---|
| 47 | Debug << "Get all neighbours from PVS" << endl;
|
---|
| 48 | vector<KdNode *> invisibleNeighbors;
|
---|
| 49 | // get all neighbors of all PVS nodes
|
---|
| 50 | i = object->mKdPvs.mEntries.begin();
|
---|
| 51 | for (; i != object->mKdPvs.mEntries.end(); i++) {
|
---|
| 52 | KdNode *node = (*i).first;
|
---|
| 53 | mKdTree->FindNeighbors(node, invisibleNeighbors, true);
|
---|
| 54 | AxisAlignedBox3 box = object->GetBox();
|
---|
| 55 | for (int j=0; j < invisibleNeighbors.size(); j++) {
|
---|
| 56 | int visibility = ComputeBoxVisibility(mSceneGraph,
|
---|
| 57 | mKdTree,
|
---|
| 58 | box,
|
---|
| 59 | mKdTree->GetBox(invisibleNeighbors[j]),
|
---|
| 60 | 1e-6f);
|
---|
| 61 | // exit(0);
|
---|
[372] | 62 | }
|
---|
[1199] | 63 | // now rank all the neighbors according to probability that a new
|
---|
| 64 | // sample creates some contribution
|
---|
| 65 | }
|
---|
[1579] | 66 | #endif
|
---|
[372] | 67 | }
|
---|
| 68 |
|
---|
| 69 | bool
|
---|
| 70 | SamplingPreprocessor::ComputeVisibility()
|
---|
| 71 | {
|
---|
| 72 |
|
---|
[1199] | 73 | Debug << "type: sampling" << endl;
|
---|
[487] | 74 |
|
---|
[1199] | 75 | cout<<"Sampling Preprocessor started\n"<<flush;
|
---|
| 76 | // cout<<"Memory/ray "<<sizeof(VssRay)+sizeof(RssTreeNode::RayInfo)<<endl;
|
---|
[372] | 77 |
|
---|
[1199] | 78 | Randomize(0);
|
---|
[1563] | 79 | const long startTime = GetTime();
|
---|
[372] | 80 | int totalSamples = 0;
|
---|
| 81 |
|
---|
[1199] | 82 | // if not already loaded, construct view cells from file
|
---|
[1715] | 83 | if (!mLoadViewCells) {
|
---|
| 84 | ConstructViewCells();
|
---|
[1199] | 85 | }
|
---|
[1743] | 86 |
|
---|
| 87 | int intersectables, faces;
|
---|
| 88 | mSceneGraph->GetStatistics(intersectables, faces);
|
---|
| 89 |
|
---|
[1199] | 90 | int samples = 0;
|
---|
| 91 | int i=0;
|
---|
| 92 | while (samples < mTotalSamples) {
|
---|
[1743] | 93 | for (i=0; i < mSamplesPerPass;) {
|
---|
| 94 | SimpleRayContainer rays;
|
---|
| 95 | VssRayContainer vssRays;
|
---|
| 96 | vector<ViewCell *> viewcells;
|
---|
| 97 | for (; rays.size() < 16; ) {
|
---|
| 98 | if (i%10000 == 0)
|
---|
| 99 | cout<<"+";
|
---|
[372] | 100 |
|
---|
[1743] | 101 | Vector3 origin, direction;
|
---|
| 102 | mViewCellsManager->GetViewPoint( origin );
|
---|
| 103 |
|
---|
| 104 | direction = UniformRandomVector();
|
---|
| 105 | ViewCell *viewcell = mViewCellsManager->GetViewCell(origin);
|
---|
| 106 |
|
---|
| 107 | if (viewcell && viewcell->GetValid()) {
|
---|
| 108 | viewcells.push_back(viewcell);
|
---|
| 109 | // cast rays in both directions to make the number of samples comparable
|
---|
| 110 | // with the global sampling method which also casts a "double" ray per sample
|
---|
| 111 | rays.push_back(SimpleRay(origin, direction));
|
---|
| 112 | i++;
|
---|
| 113 | samples++;
|
---|
| 114 | }
|
---|
| 115 | }
|
---|
[1199] | 116 |
|
---|
[1743] | 117 | CastRays(rays,
|
---|
| 118 | vssRays,
|
---|
| 119 | true,
|
---|
| 120 | false);
|
---|
| 121 |
|
---|
| 122 | if (vssRays.size()!=32) {
|
---|
[1749] | 123 | cerr<<"wrong number of rays "<<(int)vssRays.size()<<endl;
|
---|
[1743] | 124 | exit(1);
|
---|
| 125 | }
|
---|
| 126 |
|
---|
| 127 | for (int j=0; j < vssRays.size(); j++) {
|
---|
[1757] | 128 | Intersectable *obj = mViewCellsManager->GetIntersectable(*(vssRays[j]),
|
---|
| 129 | true);
|
---|
[1743] | 130 | if (obj) {
|
---|
| 131 | // if ray not outside of view space
|
---|
[1199] | 132 | float contribution;
|
---|
| 133 | int pvsContribution = 0;
|
---|
| 134 | float relativePvsContribution = 0;
|
---|
[1743] | 135 | float pdf = 1.0f;
|
---|
| 136 | ViewCell *viewcell = viewcells[j/2];
|
---|
| 137 | if (viewcell->GetPvs().GetSampleContribution(obj,
|
---|
| 138 | pdf,
|
---|
| 139 | contribution))
|
---|
| 140 | ++pvsContribution;
|
---|
| 141 | relativePvsContribution += contribution;
|
---|
| 142 | viewcell->GetPvs().AddSample(obj, pdf);
|
---|
[372] | 143 | }
|
---|
[1199] | 144 | }
|
---|
| 145 |
|
---|
[1761] | 146 | CLEAR_CONTAINER(vssRays);
|
---|
| 147 |
|
---|
[1199] | 148 | if (samples > mTotalSamples)
|
---|
| 149 | break;
|
---|
[372] | 150 | }
|
---|
[1743] | 151 |
|
---|
[1757] | 152 | #if 0
|
---|
[1743] | 153 | Debug<<"Valid viewcells before set validity: "<<mViewCellsManager->CountValidViewcells()<<endl;
|
---|
| 154 | mViewCellsManager->SetValidity(0, intersectables/2);
|
---|
| 155 | Debug<<"Valid viewcells after set validity: "<<mViewCellsManager->CountValidViewcells()<<endl;
|
---|
[1757] | 156 | #endif
|
---|
| 157 |
|
---|
[1199] | 158 | // mVssRays.PrintStatistics(mStats);
|
---|
| 159 | mStats <<
|
---|
| 160 | "#Time\n" << TimeDiff(startTime, GetTime())*1e-3<<endl<<
|
---|
| 161 | "#TotalSamples\n" <<samples<<endl;
|
---|
| 162 |
|
---|
| 163 | mViewCellsManager->PrintPvsStatistics(mStats);
|
---|
| 164 | // ComputeRenderError();
|
---|
| 165 | }
|
---|
| 166 |
|
---|
[1715] | 167 | if (0) {
|
---|
| 168 | Exporter *exporter = Exporter::GetExporter("ray-density.x3d");
|
---|
| 169 | exporter->SetExportRayDensity(true);
|
---|
| 170 | exporter->ExportKdTree(*mKdTree);
|
---|
| 171 | delete exporter;
|
---|
| 172 | }
|
---|
| 173 |
|
---|
| 174 |
|
---|
| 175 | // $$JB temporary removed
|
---|
| 176 | // mViewCellsManager->PostProcess(objects, mSampleRays);
|
---|
| 177 |
|
---|
| 178 | //-- several visualizations and statistics
|
---|
| 179 | Debug << "view cells after post processing: " << endl;
|
---|
| 180 | mViewCellsManager->PrintStatistics(Debug);
|
---|
| 181 |
|
---|
| 182 | //-- render simulation after merge
|
---|
| 183 | cout << "\nevaluating bsp view cells render time after merge ... ";
|
---|
| 184 |
|
---|
| 185 | mRenderSimulator->RenderScene();
|
---|
| 186 | SimulationStatistics ss;
|
---|
| 187 | mRenderSimulator->GetStatistics(ss);
|
---|
| 188 |
|
---|
| 189 | cout << " finished" << endl;
|
---|
| 190 | cout << ss << endl;
|
---|
| 191 | Debug << ss << endl;
|
---|
| 192 |
|
---|
| 193 | // $$JB temporary removed
|
---|
[466] | 194 | //mViewCellsManager->Visualize(objects, mSampleRays);
|
---|
[1715] | 195 |
|
---|
| 196 | return true;
|
---|
[362] | 197 | }
|
---|
[349] | 198 |
|
---|
[441] | 199 |
|
---|
[362] | 200 | }
|
---|