[372] | 1 | #include "SceneGraph.h"
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| 2 | #include "KdTree.h"
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| 3 | #include "VssPreprocessor.h"
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| 4 | #include "X3dExporter.h"
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| 5 | #include "Environment.h"
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| 6 | #include "MutualVisibility.h"
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| 7 | #include "Polygon3.h"
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| 8 | #include "ViewCell.h"
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[376] | 9 | #include "VssRay.h"
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[382] | 10 | #include "VssTree.h"
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[439] | 11 | #include "ViewCellsManager.h"
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[452] | 12 | #include "RenderSimulator.h"
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[531] | 13 | #include "Beam.h"
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| 14 | #include "GlRenderer.h"
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[1221] | 15 | #include "Intersectable.h"
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[1521] | 16 | #include "RayCaster.h"
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[372] | 17 |
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[1521] | 18 |
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[1577] | 19 |
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[863] | 20 | namespace GtpVisibilityPreprocessor {
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[860] | 21 |
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[1577] | 22 |
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[427] | 23 | bool use2dSampling = false;
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[534] | 24 | bool useViewspacePlane = false;
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[427] | 25 |
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[372] | 26 | VssPreprocessor::VssPreprocessor():
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[1486] | 27 | mVssRays()
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[372] | 28 | {
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| 29 | // this should increase coherence of the samples
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[1004] | 30 | Environment::GetSingleton()->GetIntValue("VssPreprocessor.samplesPerPass", mSamplesPerPass);
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| 31 | Environment::GetSingleton()->GetIntValue("VssPreprocessor.initialSamples", mInitialSamples);
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| 32 | Environment::GetSingleton()->GetIntValue("VssPreprocessor.vssSamples", mVssSamples);
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| 33 | Environment::GetSingleton()->GetIntValue("VssPreprocessor.vssSamplesPerPass", mVssSamplesPerPass);
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| 34 | Environment::GetSingleton()->GetBoolValue("VssPreprocessor.useImportanceSampling", mUseImportanceSampling);
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[574] | 35 |
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[1004] | 36 | Environment::GetSingleton()->GetBoolValue("VssPreprocessor.loadInitialSamples", mLoadInitialSamples);
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| 37 | Environment::GetSingleton()->GetBoolValue("VssPreprocessor.storeInitialSamples", mStoreInitialSamples);
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| 38 | Environment::GetSingleton()->GetBoolValue("VssPreprocessor.testBeamSampling", mTestBeamSampling);
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| 39 | Environment::GetSingleton()->GetBoolValue("VssPreprocessor.enlargeViewSpace", mEnlargeViewSpace);
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| 40 | Environment::GetSingleton()->GetBoolValue("Preprocessor.detectEmptyViewSpace", mDetectEmptyViewSpace);
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[694] | 41 |
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[508] | 42 | useViewspacePlane = mUseViewSpaceBox; //hack
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[675] | 43 |
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| 44 | Debug << "*********** vss preprocessor options **************" << endl;
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| 45 | Debug << "use view space box=" << mUseViewSpaceBox << endl;
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| 46 | Debug << "enlarge view space=" << mEnlargeViewSpace << endl;
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| 47 | Debug << "*********** end vss preprocessor options **************" << endl;
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| 48 |
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[372] | 49 | }
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| 50 |
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[685] | 51 |
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[372] | 52 | VssPreprocessor::~VssPreprocessor()
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| 53 | {
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[674] | 54 | CLEAR_CONTAINER(mVssRays);
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[372] | 55 | }
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| 56 |
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[685] | 57 |
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[376] | 58 | Vector3
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[382] | 59 | VssPreprocessor::GetViewpoint(AxisAlignedBox3 *viewSpaceBox)
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[372] | 60 | {
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[434] | 61 | AxisAlignedBox3 box;
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[468] | 62 |
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[434] | 63 | if (viewSpaceBox)
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| 64 | box =*viewSpaceBox;
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[468] | 65 | else
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[434] | 66 | box = mKdTree->GetBox();
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[468] | 67 |
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[434] | 68 | // shrink the box in the y direction
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| 69 | return box.GetRandomPoint();
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[372] | 70 | }
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| 71 |
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[376] | 72 | Vector3
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[427] | 73 | VssPreprocessor::GetDirection(const Vector3 &viewpoint,
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[434] | 74 | AxisAlignedBox3 *viewSpaceBox
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| 75 | )
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[372] | 76 | {
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[434] | 77 | Vector3 point;
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[600] | 78 | if (!use2dSampling)
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| 79 | {
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| 80 | if (0)
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| 81 | {
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| 82 | Vector3 normal;
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| 83 | int i = Random((int)mObjects.size());
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| 84 | Intersectable *object = mObjects[i];
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| 85 | object->GetRandomSurfacePoint(point, normal);
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| 86 | }
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| 87 | else
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| 88 | point = mKdTree->GetBox().GetRandomPoint();
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[534] | 89 | // point = viewpoint + UniformRandomVector();
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[600] | 90 | }
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| 91 | else
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| 92 | {
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| 93 | AxisAlignedBox3 box;
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[534] | 94 |
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[600] | 95 | if (viewSpaceBox)
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| 96 | box =*viewSpaceBox;
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| 97 | else
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| 98 | box = mKdTree->GetBox();
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[468] | 99 |
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[600] | 100 | point = box.GetRandomPoint();
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| 101 | point.y = viewpoint.y;
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[434] | 102 | }
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[468] | 103 |
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[434] | 104 | return point - viewpoint;
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[372] | 105 | }
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| 106 |
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[401] | 107 | int
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[427] | 108 | VssPreprocessor::GenerateImportanceRays(VssTree *vssTree,
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[434] | 109 | const int desiredSamples,
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| 110 | SimpleRayContainer &rays
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| 111 | )
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[401] | 112 | {
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[434] | 113 | int num;
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| 114 | if (0) {
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| 115 | float minRayContribution;
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| 116 | float maxRayContribution;
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| 117 | float avgRayContribution;
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[468] | 118 |
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[434] | 119 | vssTree->GetRayContributionStatistics(minRayContribution,
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| 120 | maxRayContribution,
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| 121 | avgRayContribution);
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[468] | 122 |
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[434] | 123 | cout<<
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| 124 | "#MIN_RAY_CONTRIB\n"<<minRayContribution<<endl<<
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| 125 | "#MAX_RAY_CONTRIB\n"<<maxRayContribution<<endl<<
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| 126 | "#AVG_RAY_CONTRIB\n"<<avgRayContribution<<endl;
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[468] | 127 |
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[434] | 128 | float p = desiredSamples/(float)(avgRayContribution*vssTree->stat.Leaves());
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| 129 | num = vssTree->GenerateRays(p, rays);
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| 130 | } else {
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[534] | 131 | int leaves = vssTree->stat.Leaves();
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[434] | 132 | num = vssTree->GenerateRays(desiredSamples, leaves, rays);
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| 133 | }
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[468] | 134 |
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[434] | 135 | cout<<"Generated "<<num<<" rays."<<endl;
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[468] | 136 |
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[434] | 137 | return num;
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[427] | 138 | }
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[376] | 139 |
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| 140 |
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[427] | 141 | bool
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| 142 | VssPreprocessor::ExportRays(const char *filename,
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[434] | 143 | const VssRayContainer &vssRays,
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| 144 | const int number
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| 145 | )
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[427] | 146 | {
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[434] | 147 | cout<<"Exporting vss rays..."<<endl<<flush;
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[468] | 148 |
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[434] | 149 | Exporter *exporter = NULL;
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| 150 | exporter = Exporter::GetExporter(filename);
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[1074] | 151 | exporter->SetWireframe();
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| 152 | exporter->ExportKdTree(*mKdTree);
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[434] | 153 | exporter->SetFilled();
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[1328] | 154 | exporter->ExportScene(mSceneGraph->GetRoot());
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[434] | 155 | exporter->SetWireframe();
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[427] | 156 |
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[1486] | 157 | exporter->SetForcedMaterial(RgbColor(1,0,1));
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[1563] | 158 | exporter->ExportBox(mViewCellsManager->GetViewSpaceBox());
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[1486] | 159 | exporter->ResetForcedMaterial();
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[468] | 160 |
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[1486] | 161 |
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[534] | 162 | VssRayContainer rays;
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| 163 | vssRays.SelectRays(number, rays);
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| 164 |
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[685] | 165 | //exporter->ExportRays(rays, RgbColor(1, 0, 0));
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[468] | 166 |
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[434] | 167 | delete exporter;
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[401] | 168 |
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[434] | 169 | cout<<"done."<<endl<<flush;
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[427] | 170 |
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[434] | 171 | return true;
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[401] | 172 | }
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| 173 |
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| 174 |
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[372] | 175 | bool
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[434] | 176 | VssPreprocessor::ExportVssTree(char *filename,
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[438] | 177 | VssTree *tree,
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| 178 | const Vector3 &dir
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| 179 | )
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[434] | 180 | {
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| 181 | Exporter *exporter = Exporter::GetExporter(filename);
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| 182 | exporter->SetFilled();
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[1328] | 183 | exporter->ExportScene(mSceneGraph->GetRoot());
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[438] | 184 | // exporter->SetWireframe();
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| 185 | bool result = exporter->ExportVssTree2( *tree, dir );
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[434] | 186 | delete exporter;
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| 187 | return result;
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| 188 | }
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| 189 |
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| 190 | bool
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[427] | 191 | VssPreprocessor::ExportVssTreeLeaf(char *filename,
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[434] | 192 | VssTree *tree,
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| 193 | VssTreeLeaf *leaf)
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[427] | 194 | {
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[434] | 195 | Exporter *exporter = NULL;
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| 196 | exporter = Exporter::GetExporter(filename);
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| 197 | exporter->SetWireframe();
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| 198 | exporter->ExportKdTree(*mKdTree);
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[468] | 199 |
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[1486] | 200 | exporter->SetForcedMaterial(RgbColor(1,0,0));
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[1563] | 201 | exporter->ExportBox(mViewCellsManager->GetViewSpaceBox());
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[1486] | 202 | exporter->ResetForcedMaterial();
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[468] | 203 |
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[434] | 204 | exporter->SetForcedMaterial(RgbColor(0,0,1));
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| 205 | exporter->ExportBox(tree->GetBBox(leaf));
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| 206 | exporter->ResetForcedMaterial();
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[468] | 207 |
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[434] | 208 | VssRayContainer rays[4];
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| 209 | for (int i=0; i < leaf->rays.size(); i++) {
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| 210 | int k = leaf->rays[i].GetRayClass();
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| 211 | rays[k].push_back(leaf->rays[i].mRay);
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| 212 | }
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[468] | 213 |
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[434] | 214 | // SOURCE RAY
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| 215 | exporter->ExportRays(rays[0], RgbColor(1, 0, 0));
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| 216 | // TERMINATION RAY
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| 217 | exporter->ExportRays(rays[1], RgbColor(1, 1, 1));
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| 218 | // PASSING_RAY
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| 219 | exporter->ExportRays(rays[2], RgbColor(1, 1, 0));
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| 220 | // CONTAINED_RAY
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| 221 | exporter->ExportRays(rays[3], RgbColor(0, 0, 1));
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[427] | 222 |
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[434] | 223 | delete exporter;
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| 224 | return true;
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[427] | 225 | }
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| 226 |
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| 227 | void
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| 228 | VssPreprocessor::ExportVssTreeLeaves(VssTree *tree, const int number)
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| 229 | {
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[434] | 230 | vector<VssTreeLeaf *> leaves;
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| 231 | tree->CollectLeaves(leaves);
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[427] | 232 |
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[434] | 233 | int num = 0;
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| 234 | int i;
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| 235 | float p = number / (float)leaves.size();
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| 236 | for (i=0; i < leaves.size(); i++) {
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| 237 | if (RandomValue(0,1) < p) {
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| 238 | char filename[64];
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| 239 | sprintf(filename, "vss-leaf-%04d.x3d", num);
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| 240 | ExportVssTreeLeaf(filename, tree, leaves[i]);
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| 241 | num++;
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[427] | 242 | }
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[434] | 243 | if (num >= number)
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| 244 | break;
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| 245 | }
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[427] | 246 | }
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| 247 |
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[685] | 248 |
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[535] | 249 | void VssPreprocessor::TestBeamCasting(VssTree *tree,
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| 250 | ViewCellsManager *vm,
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| 251 | const ObjectContainer &objects)
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[530] | 252 | {
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[540] | 253 | //debuggerWidget = new GlDebuggerWidget(renderer);
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| 254 | // renderer->resize(640, 480);
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| 255 | //debuggerWidget->resize(640, 480);
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| 256 |
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[531] | 257 | vector<VssTreeLeaf *> leaves;
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| 258 | tree->CollectLeaves(leaves);
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[530] | 259 |
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[535] | 260 | Exporter *exporter = Exporter::GetExporter("shafts.x3d");
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| 261 |
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| 262 | exporter->SetWireframe();
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[540] | 263 | exporter->ExportGeometry(objects);
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[535] | 264 | exporter->SetFilled();
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| 265 | //Randomize();
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[1145] | 266 | // §§matt
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| 267 | // debuggerWidget = new GlDebuggerWidget(renderer);
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[540] | 268 |
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| 269 | /*debuggerWidget->mBeam = beam;
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| 270 | debuggerWidget->mSourceObject = sourceObj;
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| 271 | debuggerWidget->mSamples = 10000;
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| 272 |
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| 273 | Debug << "showing window" << endl;
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[1145] | 274 | debuggerWidget->show();
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[540] | 275 |
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[1145] | 276 | renderer->makeCurrent();*/
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[540] | 277 |
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| 278 | for (int i = 0; i < 10; ++ i)
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[530] | 279 | {
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[540] | 280 | Beam beam;
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| 281 | Intersectable *sourceObj = mObjects[5];
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| 282 |
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[531] | 283 | const int index = (int)RandomValue(0, (Real)((int)leaves.size() - 1));
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| 284 | VssTreeLeaf *leaf = leaves[index];
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[530] | 285 |
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[535] | 286 | AxisAlignedBox3 dirBox = tree->GetDirBBox(leaf);
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[531] | 287 | AxisAlignedBox3 box = tree->GetBBox(leaf);
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[532] | 288 |
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[535] | 289 | beam.Construct(box, dirBox);
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[532] | 290 |
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| 291 | // collect kd leaves and view cells
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| 292 | mKdTree->CastBeam(beam);
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| 293 | vm->CastBeam(beam);
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| 294 |
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[577] | 295 | Debug << "found " << (int)beam.mViewCells.size() << " view cells and "
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| 296 | << (int)beam.mKdNodes.size() << " kd nodes" << endl;
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[532] | 297 |
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[530] | 298 | BeamSampleStatistics stats;
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[1145] | 299 | // §§matt
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| 300 | /* renderer->SampleBeamContributions(sourceObj,
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[589] | 301 | beam,
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| 302 | 200000,
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[531] | 303 | stats);
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[530] | 304 |
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[540] | 305 | char s[64]; sprintf(s, "shaft%04d.png", i);
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| 306 |
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| 307 | QImage image = renderer->toImage();
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| 308 | image.save(s, "PNG");
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[532] | 309 | Debug << "beam statistics: " << stats << endl << endl;
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[1145] | 310 | */
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[540] | 311 | if (1)
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| 312 | {
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| 313 | AxisAlignedBox3 sbox = mSceneGraph->GetBox();
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| 314 | Vector3 bmin = sbox.Min() - 150.0f;
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| 315 | Vector3 bmax = sbox.Max() + 150.0f;
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| 316 | AxisAlignedBox3 vbox(bmin, bmax);
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[535] | 317 |
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[540] | 318 | exporter->ExportBeam(beam, vbox);
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| 319 | }
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[535] | 320 |
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[540] | 321 | bool exportViewCells = false;
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[535] | 322 | if (exportViewCells)
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| 323 | {
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| 324 | ViewCellContainer::const_iterator it, it_end = beam.mViewCells.end();
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| 325 |
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| 326 | for (it = beam.mViewCells.begin(); it != beam.mViewCells.end(); ++ it)
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| 327 | {
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| 328 | BspNodeGeometry geom;
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| 329 | AxisAlignedBox3 vbox;
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| 330 | vbox.Initialize();
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[538] | 331 | vbox.Include((*it)->GetMesh());
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| 332 |
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| 333 | exporter->SetWireframe();
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[535] | 334 | exporter->ExportBox(vbox);
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[538] | 335 | exporter->SetFilled();
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| 336 | exporter->ExportViewCell(*it);
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[535] | 337 | }
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[538] | 338 |
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| 339 | /*vector<KdNode *>::const_iterator it, it_end = beam.mKdNodes.end();
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| 340 |
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| 341 | for (it = beam.mKdNodes.begin(); it != beam.mKdNodes.end(); ++ it)
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| 342 | {
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| 343 | exporter->ExportBox(mKdTree->GetBox((*it)));
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| 344 | }*/
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[535] | 345 | }
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[530] | 346 | }
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[540] | 347 | /*while (1)
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| 348 | { debuggerWidget->repaint();
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| 349 | };*/
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[535] | 350 | delete exporter;
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[530] | 351 | }
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| 352 |
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[540] | 353 |
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[434] | 354 | float
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| 355 | VssPreprocessor::GetAvgPvsSize(VssTree *tree,
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| 356 | const vector<AxisAlignedBox3> &viewcells
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| 357 | )
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| 358 | {
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| 359 | vector<AxisAlignedBox3>::const_iterator it, it_end = viewcells.end();
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| 360 |
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| 361 | int sum = 0;
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| 362 | for (it = viewcells.begin(); it != it_end; ++ it)
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| 363 | sum += tree->GetPvsSize(*it);
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[468] | 364 |
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[434] | 365 | return sum/(float)viewcells.size();
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| 366 | }
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| 367 |
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[427] | 368 | bool
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[372] | 369 | VssPreprocessor::ComputeVisibility()
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| 370 | {
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[579] | 371 | Debug << "type: vss" << endl;
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[468] | 372 |
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[1563] | 373 | const long startTime = GetTime();
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| 374 | int totalSamples = 0;
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[468] | 375 |
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[1723] | 376 | //mSceneGraph->CollectObjects(&mObjects);
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[372] | 377 |
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[1563] | 378 | if (!mLoadViewCells)
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| 379 | {
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| 380 | //-- generate new view cells from the scratch
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| 381 | //-- for construction the manager uses it's own set of samples
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| 382 | ConstructViewCells();
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| 383 | }
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| 384 | #if 0
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| 385 | else
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| 386 | {
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| 387 | //-- load view cells from file
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| 388 | //-- test successful view cells loading by exporting them again
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| 389 | VssRayContainer dummies;
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| 390 | mViewCellsManager->Visualize(mObjects, dummies);
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| 391 | mViewCellsManager->ExportViewCells("test.xml.zip", mViewCellsManager->GetExportPvs(), mObjects);
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| 392 | }
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| 393 | #endif
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[579] | 394 |
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[1563] | 395 | VssTree *vssTree = NULL;
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| 396 | const long initialTime = GetTime();
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[677] | 397 |
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[1563] | 398 | if (mLoadInitialSamples)
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| 399 | {
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| 400 | cout << "Loading samples from file ... ";
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| 401 | LoadSamples(mVssRays, mObjects);
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| 402 | cout << "finished\n" << endl;
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| 403 | totalSamples = (int)mVssRays.size();
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| 404 | }
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| 405 | else
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| 406 | {
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| 407 | while (totalSamples < mInitialSamples) {
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| 408 | int passContributingSamples = 0;
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| 409 | int passSampleContributions = 0;
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| 410 | int passSamples = 0;
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[598] | 411 |
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[1563] | 412 | int index = 0;
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[1052] | 413 |
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[1563] | 414 | int sampleContributions;
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[590] | 415 |
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[1563] | 416 | int s = Min(mSamplesPerPass, mInitialSamples);
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| 417 | for (int k=0; k < s; k++)
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| 418 | {
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| 419 | Vector3 viewpoint;
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[1404] | 420 |
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[1563] | 421 | mViewCellsManager->GetViewPoint(viewpoint);
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| 422 | const Vector3 direction = GetDirection(viewpoint, &mViewCellsManager->GetViewSpaceBox());
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[468] | 423 |
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[1563] | 424 | const SimpleRay sray(viewpoint, direction);
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| 425 | sampleContributions = mRayCaster->CastRay(sray, mVssRays, mViewCellsManager->GetViewSpaceBox(), true);
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[468] | 426 |
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[1563] | 427 | if (sampleContributions) {
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| 428 | passContributingSamples ++;
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| 429 | passSampleContributions += sampleContributions;
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| 430 | }
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| 431 | passSamples++;
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| 432 | totalSamples++;
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| 433 | }
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[468] | 434 |
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[1563] | 435 | mPass++;
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| 436 | int pvsSize = 0;
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| 437 | float avgRayContrib = (passContributingSamples > 0) ?
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| 438 | passSampleContributions/(float)passContributingSamples : 0;
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[468] | 439 |
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[1563] | 440 | cout << "#Pass " << mPass << " : t = " << TimeDiff(startTime, GetTime())*1e-3 << "s" << endl;
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| 441 | cout << "#TotalSamples=" << totalSamples/1000
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| 442 | << "#SampleContributions=" << passSampleContributions << " ("
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| 443 | << 100*passContributingSamples/(float)passSamples<<"%)" << " avgPVS="
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| 444 | << pvsSize/(float)mObjects.size() << endl
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| 445 | << "avg ray contrib=" << avgRayContrib << endl;
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[534] | 446 |
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[1563] | 447 | mStats <<
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| 448 | "#Pass\n" <<mPass<<endl<<
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| 449 | "#Time\n" << TimeDiff(startTime, GetTime())*1e-3 << endl<<
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| 450 | "#TotalSamples\n" << totalSamples<< endl<<
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| 451 | "#SampleContributions\n" << passSampleContributions << endl <<
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| 452 | "#PContributingSamples\n"<<100*passContributingSamples/(float)passSamples<<endl <<
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| 453 | "#AvgPVS\n"<< pvsSize/(float)mObjects.size() << endl <<
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| 454 | "#AvgRayContrib\n" << avgRayContrib << endl;
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[490] | 455 | }
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[468] | 456 |
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[1563] | 457 | cout << "#totalPvsSize=" << mKdTree->CollectLeafPvs() << endl;
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[468] | 458 |
|
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| 459 |
|
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[534] | 460 |
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[1563] | 461 | }
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[534] | 462 |
|
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[564] | 463 |
|
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[1563] | 464 | cout << "#totalRayStackSize=" << (int)mVssRays.size() << endl << flush;
|
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| 465 | Debug << (int)mVssRays.size() << " rays generated in "
|
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| 466 | << TimeDiff(initialTime, GetTime()) * 1e-3 << " seconds" << endl;
|
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[401] | 467 |
|
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[1563] | 468 | if (mStoreInitialSamples)
|
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| 469 | {
|
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| 470 | cout << "Writing " << (int)mVssRays.size() << " samples to file ... ";
|
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| 471 | ExportSamples(mVssRays);
|
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| 472 | cout << "finished\n" << endl;
|
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[491] | 473 |
|
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[1563] | 474 | /*VssRayContainer dummyRays;
|
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| 475 | LoadSamples(dummyRays, mObjects);
|
---|
| 476 | Debug << "rays " << (int)mVssRays.size() << " " << dummyRays.size() << endl;
|
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[491] | 477 |
|
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[1563] | 478 | for (int i = 0; i < (int)mVssRays.size(); ++ i)
|
---|
| 479 | {
|
---|
| 480 | Debug << mVssRays[i]->GetOrigin() << " " << mVssRays[i]->GetTermination() << " " << mVssRays[i]->mOriginObject << " " << mVssRays[i]->mTerminationObject << endl;
|
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| 481 | Debug << dummyRays[i]->GetOrigin() << " " << dummyRays[i]->GetTermination() << " " << dummyRays[i]->mOriginObject << " " << dummyRays[i]->mTerminationObject << endl << endl;
|
---|
| 482 | }*/
|
---|
| 483 | }
|
---|
[468] | 484 |
|
---|
[372] | 485 |
|
---|
[1563] | 486 | //int numExportRays = 2000;
|
---|
| 487 | int numExportRays = 0;
|
---|
[468] | 488 |
|
---|
[1563] | 489 | if (numExportRays) {
|
---|
| 490 | char filename[64];
|
---|
| 491 | sprintf(filename, "vss-rays-initial.x3d");
|
---|
| 492 | ExportRays(filename, mVssRays, numExportRays);
|
---|
| 493 | }
|
---|
[468] | 494 |
|
---|
[1563] | 495 | vssTree = new VssTree;
|
---|
| 496 | // viewcells = Construct(mVssRays);
|
---|
[468] | 497 |
|
---|
[1563] | 498 | vssTree->Construct(mVssRays, NULL);
|
---|
| 499 | cout<<"VssTree root PVS size = "<<vssTree->GetRootPvsSize()<<endl;
|
---|
[1074] | 500 |
|
---|
[1563] | 501 | if (0) ExportRays("kdtree.x3d", mVssRays, 10);
|
---|
[430] | 502 |
|
---|
[1563] | 503 | if (0)
|
---|
| 504 | {
|
---|
| 505 | ExportVssTree("vss-tree-100.x3d", vssTree, Vector3(1,0,0));
|
---|
| 506 | ExportVssTree("vss-tree-001.x3d", vssTree, Vector3(0,0,1));
|
---|
| 507 | ExportVssTree("vss-tree-101.x3d", vssTree, Vector3(1,0,1));
|
---|
| 508 | ExportVssTree("vss-tree-101m.x3d", vssTree, Vector3(-1,0,-1));
|
---|
| 509 | ExportVssTreeLeaves(vssTree, 10);
|
---|
| 510 | }
|
---|
[468] | 511 |
|
---|
[1563] | 512 | // viewcells->UpdatePVS(newVssRays);
|
---|
| 513 | // get viewcells as kd tree boxes
|
---|
| 514 | vector<AxisAlignedBox3> kdViewcells;
|
---|
| 515 | if (0) {
|
---|
| 516 | vector<KdLeaf *> leaves;
|
---|
| 517 | mKdTree->CollectLeaves(leaves);
|
---|
| 518 | vector<KdLeaf *>::const_iterator it;
|
---|
| 519 | int targetLeaves = 50;
|
---|
| 520 | float prob = targetLeaves/(float)leaves.size();
|
---|
| 521 | for (it = leaves.begin(); it != leaves.end(); ++it)
|
---|
| 522 | if (RandomValue(0.0f,1.0f) < prob)
|
---|
| 523 | kdViewcells.push_back(mKdTree->GetBox(*it));
|
---|
[434] | 524 |
|
---|
[1563] | 525 | float avgPvs = GetAvgPvsSize(vssTree, kdViewcells);
|
---|
| 526 | cout<<"Initial average PVS size = "<<avgPvs<<endl;
|
---|
| 527 | }
|
---|
[468] | 528 |
|
---|
[448] | 529 |
|
---|
[1563] | 530 | int samples = 0;
|
---|
| 531 | int pass = 0;
|
---|
[468] | 532 |
|
---|
| 533 |
|
---|
[1563] | 534 | // cast view cell samples
|
---|
| 535 | while (samples < mVssSamples)
|
---|
| 536 | {
|
---|
[468] | 537 |
|
---|
[1563] | 538 | int num = mVssSamplesPerPass;
|
---|
| 539 | SimpleRayContainer rays;
|
---|
| 540 | VssRayContainer vssRays;
|
---|
[427] | 541 |
|
---|
[1563] | 542 | if (!mUseImportanceSampling) {
|
---|
| 543 | for (int j=0; j < num; j++) {
|
---|
| 544 | Vector3 viewpoint;
|
---|
| 545 | mViewCellsManager->GetViewPoint(viewpoint);
|
---|
| 546 | Vector3 direction = GetDirection(viewpoint, NULL);
|
---|
| 547 | rays.push_back(SimpleRay(viewpoint, direction));
|
---|
| 548 | }
|
---|
| 549 | } else {
|
---|
| 550 | num = GenerateImportanceRays(vssTree, num, rays);
|
---|
| 551 | }
|
---|
[430] | 552 |
|
---|
[1563] | 553 | CastRays(rays, vssRays, true);
|
---|
| 554 | vssTree->AddRays(vssRays);
|
---|
[468] | 555 |
|
---|
[1563] | 556 | if (0) {
|
---|
| 557 | int subdivided = vssTree->UpdateSubdivision();
|
---|
| 558 | cout<<"subdivided leafs = "<<subdivided<<endl;
|
---|
| 559 | }
|
---|
| 560 |
|
---|
| 561 | float avgPvs = GetAvgPvsSize(vssTree, kdViewcells);
|
---|
| 562 | cout<<"Average PVS size = "<<avgPvs<<endl;
|
---|
| 563 |
|
---|
| 564 | /// compute view cell contribution of rays
|
---|
| 565 | mViewCellsManager->ComputeSampleContributions(vssRays, true, false);
|
---|
| 566 |
|
---|
| 567 | if (numExportRays) {
|
---|
| 568 | char filename[64];
|
---|
| 569 | if (mUseImportanceSampling)
|
---|
| 570 | sprintf(filename, "vss-rays-i%04d.x3d", pass);
|
---|
| 571 | else
|
---|
| 572 | sprintf(filename, "vss-rays-%04d.x3d", pass);
|
---|
| 573 |
|
---|
| 574 | ExportRays(filename, vssRays, numExportRays);
|
---|
| 575 | }
|
---|
| 576 |
|
---|
| 577 | samples+=num;
|
---|
| 578 | float pvs = vssTree->GetAvgPvsSize();
|
---|
| 579 | cout<<"*****************************\n";
|
---|
| 580 | cout<<samples<<" avgPVS ="<<pvs<<endl;
|
---|
| 581 | cout<<"VssTree root PVS size = "<<vssTree->GetRootPvsSize()<<endl;
|
---|
| 582 | cout<<"*****************************\n";
|
---|
| 583 | // if (samples >= mVssSamples) break;
|
---|
| 584 | pass ++;
|
---|
[401] | 585 | }
|
---|
[386] | 586 |
|
---|
[1563] | 587 | if (mTestBeamSampling && mUseGlRenderer)
|
---|
| 588 | {
|
---|
| 589 | TestBeamCasting(vssTree, mViewCellsManager, mObjects);
|
---|
| 590 | }
|
---|
[448] | 591 |
|
---|
[1563] | 592 | if (0) Debug << vssTree->stat << endl;
|
---|
[553] | 593 |
|
---|
[1563] | 594 | if (0)
|
---|
| 595 | {
|
---|
| 596 | VssRayContainer viewCellRays;
|
---|
| 597 | // compute rays used for view cells construction
|
---|
| 598 | const int numRays = mViewCellsManager->GetVisualizationSamples();
|
---|
| 599 | vssTree->CollectRays(viewCellRays, numRays);
|
---|
| 600 | }
|
---|
[468] | 601 |
|
---|
[535] | 602 |
|
---|
[1563] | 603 | ////////////////////
|
---|
| 604 | //-- render simulation after construction
|
---|
[605] | 605 |
|
---|
[1563] | 606 | mRenderSimulator->RenderScene();
|
---|
| 607 | SimulationStatistics ss;
|
---|
| 608 | mRenderSimulator->GetStatistics(ss);
|
---|
| 609 | Debug << "\nFinal view cells partition render time\n" << ss << endl;
|
---|
| 610 | cout << "\nFinal view cells partition render time\n" << ss << endl;
|
---|
[1414] | 611 |
|
---|
[1563] | 612 | delete vssTree;
|
---|
[468] | 613 |
|
---|
[1563] | 614 | return true;
|
---|
[466] | 615 | }
|
---|
[697] | 616 |
|
---|
[1743] | 617 | }
|
---|