[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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[1883] | 17 | #include "SamplingStrategy.h"
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[2116] | 18 | #include "ViewCellBsp.h"
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[372] | 19 |
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[1521] | 20 |
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[863] | 21 | namespace GtpVisibilityPreprocessor {
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[860] | 22 |
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[1577] | 23 |
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[427] | 24 | bool use2dSampling = false;
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[534] | 25 | bool useViewspacePlane = false;
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[427] | 26 |
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[372] | 27 | VssPreprocessor::VssPreprocessor():
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[1486] | 28 | mVssRays()
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[372] | 29 | {
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| 30 | // this should increase coherence of the samples
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[1966] | 31 | // Environment::GetSingleton()->GetIntValue("VssPreprocessor.samplesPerPass", mSamplesPerPass);
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| 32 | // Environment::GetSingleton()->GetIntValue("VssPreprocessor.initialSamples", mInitialSamples);
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| 33 | // Environment::GetSingleton()->GetIntValue("VssPreprocessor.vssSamples", mVssSamples);
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| 34 | // Environment::GetSingleton()->GetIntValue("VssPreprocessor.vssSamplesPerPass", mVssSamplesPerPass);
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[1004] | 35 | Environment::GetSingleton()->GetBoolValue("VssPreprocessor.useImportanceSampling", mUseImportanceSampling);
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[574] | 36 |
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[1004] | 37 | Environment::GetSingleton()->GetBoolValue("VssPreprocessor.loadInitialSamples", mLoadInitialSamples);
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| 38 | Environment::GetSingleton()->GetBoolValue("VssPreprocessor.storeInitialSamples", mStoreInitialSamples);
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| 39 | Environment::GetSingleton()->GetBoolValue("VssPreprocessor.testBeamSampling", mTestBeamSampling);
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| 40 | Environment::GetSingleton()->GetBoolValue("VssPreprocessor.enlargeViewSpace", mEnlargeViewSpace);
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| 41 | Environment::GetSingleton()->GetBoolValue("Preprocessor.detectEmptyViewSpace", mDetectEmptyViewSpace);
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[694] | 42 |
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[508] | 43 | useViewspacePlane = mUseViewSpaceBox; //hack
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[675] | 44 |
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| 45 | Debug << "*********** vss preprocessor options **************" << endl;
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| 46 | Debug << "use view space box=" << mUseViewSpaceBox << endl;
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| 47 | Debug << "enlarge view space=" << mEnlargeViewSpace << endl;
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| 48 | Debug << "*********** end vss preprocessor options **************" << endl;
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| 49 |
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[372] | 50 | }
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| 51 |
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[685] | 52 |
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[372] | 53 | VssPreprocessor::~VssPreprocessor()
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| 54 | {
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[674] | 55 | CLEAR_CONTAINER(mVssRays);
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[372] | 56 | }
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| 57 |
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[685] | 58 |
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[376] | 59 | Vector3
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[382] | 60 | VssPreprocessor::GetViewpoint(AxisAlignedBox3 *viewSpaceBox)
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[372] | 61 | {
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[434] | 62 | AxisAlignedBox3 box;
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[468] | 63 |
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[434] | 64 | if (viewSpaceBox)
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| 65 | box =*viewSpaceBox;
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[468] | 66 | else
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[434] | 67 | box = mKdTree->GetBox();
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[468] | 68 |
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[434] | 69 | // shrink the box in the y direction
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| 70 | return box.GetRandomPoint();
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[372] | 71 | }
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| 72 |
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[376] | 73 | Vector3
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[427] | 74 | VssPreprocessor::GetDirection(const Vector3 &viewpoint,
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[434] | 75 | AxisAlignedBox3 *viewSpaceBox
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| 76 | )
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[372] | 77 | {
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[434] | 78 | Vector3 point;
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[600] | 79 | if (!use2dSampling)
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| 80 | {
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| 81 | if (0)
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| 82 | {
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| 83 | Vector3 normal;
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| 84 | int i = Random((int)mObjects.size());
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| 85 | Intersectable *object = mObjects[i];
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| 86 | object->GetRandomSurfacePoint(point, normal);
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| 87 | }
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| 88 | else
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| 89 | point = mKdTree->GetBox().GetRandomPoint();
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[534] | 90 | // point = viewpoint + UniformRandomVector();
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[600] | 91 | }
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| 92 | else
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| 93 | {
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| 94 | AxisAlignedBox3 box;
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[534] | 95 |
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[600] | 96 | if (viewSpaceBox)
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| 97 | box =*viewSpaceBox;
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| 98 | else
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| 99 | box = mKdTree->GetBox();
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[468] | 100 |
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[600] | 101 | point = box.GetRandomPoint();
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| 102 | point.y = viewpoint.y;
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[434] | 103 | }
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[468] | 104 |
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[434] | 105 | return point - viewpoint;
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[372] | 106 | }
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| 107 |
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[401] | 108 | int
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[427] | 109 | VssPreprocessor::GenerateImportanceRays(VssTree *vssTree,
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[434] | 110 | const int desiredSamples,
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| 111 | SimpleRayContainer &rays
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| 112 | )
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[401] | 113 | {
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[434] | 114 | int num;
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| 115 | if (0) {
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| 116 | float minRayContribution;
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| 117 | float maxRayContribution;
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| 118 | float avgRayContribution;
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[468] | 119 |
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[434] | 120 | vssTree->GetRayContributionStatistics(minRayContribution,
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| 121 | maxRayContribution,
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| 122 | avgRayContribution);
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[468] | 123 |
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[434] | 124 | cout<<
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| 125 | "#MIN_RAY_CONTRIB\n"<<minRayContribution<<endl<<
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| 126 | "#MAX_RAY_CONTRIB\n"<<maxRayContribution<<endl<<
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| 127 | "#AVG_RAY_CONTRIB\n"<<avgRayContribution<<endl;
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[468] | 128 |
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[434] | 129 | float p = desiredSamples/(float)(avgRayContribution*vssTree->stat.Leaves());
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| 130 | num = vssTree->GenerateRays(p, rays);
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| 131 | } else {
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[534] | 132 | int leaves = vssTree->stat.Leaves();
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[434] | 133 | num = vssTree->GenerateRays(desiredSamples, leaves, rays);
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| 134 | }
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[468] | 135 |
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[434] | 136 | cout<<"Generated "<<num<<" rays."<<endl;
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[468] | 137 |
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[434] | 138 | return num;
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[427] | 139 | }
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[376] | 140 |
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| 141 |
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[427] | 142 | bool
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| 143 | VssPreprocessor::ExportRays(const char *filename,
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[434] | 144 | const VssRayContainer &vssRays,
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[2199] | 145 | const int number,
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| 146 | const bool exportScene
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[434] | 147 | )
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[427] | 148 | {
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[434] | 149 | cout<<"Exporting vss rays..."<<endl<<flush;
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[468] | 150 |
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[434] | 151 | Exporter *exporter = NULL;
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| 152 | exporter = Exporter::GetExporter(filename);
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[1074] | 153 | exporter->SetWireframe();
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| 154 | exporter->ExportKdTree(*mKdTree);
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[434] | 155 | exporter->SetFilled();
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[1328] | 156 | exporter->ExportScene(mSceneGraph->GetRoot());
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[434] | 157 | exporter->SetWireframe();
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[427] | 158 |
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[1486] | 159 | exporter->SetForcedMaterial(RgbColor(1,0,1));
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[1563] | 160 | exporter->ExportBox(mViewCellsManager->GetViewSpaceBox());
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[1486] | 161 | exporter->ResetForcedMaterial();
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[468] | 162 |
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[1486] | 163 |
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[534] | 164 | VssRayContainer rays;
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| 165 | vssRays.SelectRays(number, rays);
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| 166 |
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[685] | 167 | //exporter->ExportRays(rays, RgbColor(1, 0, 0));
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[468] | 168 |
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[434] | 169 | delete exporter;
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[401] | 170 |
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[434] | 171 | cout<<"done."<<endl<<flush;
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[427] | 172 |
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[434] | 173 | return true;
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[401] | 174 | }
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| 175 |
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| 176 |
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[372] | 177 | bool
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[434] | 178 | VssPreprocessor::ExportVssTree(char *filename,
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[438] | 179 | VssTree *tree,
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| 180 | const Vector3 &dir
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| 181 | )
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[434] | 182 | {
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| 183 | Exporter *exporter = Exporter::GetExporter(filename);
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| 184 | exporter->SetFilled();
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[1328] | 185 | exporter->ExportScene(mSceneGraph->GetRoot());
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[438] | 186 | // exporter->SetWireframe();
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| 187 | bool result = exporter->ExportVssTree2( *tree, dir );
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[434] | 188 | delete exporter;
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| 189 | return result;
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| 190 | }
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| 191 |
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| 192 | bool
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[427] | 193 | VssPreprocessor::ExportVssTreeLeaf(char *filename,
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[434] | 194 | VssTree *tree,
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| 195 | VssTreeLeaf *leaf)
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[427] | 196 | {
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[434] | 197 | Exporter *exporter = NULL;
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| 198 | exporter = Exporter::GetExporter(filename);
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| 199 | exporter->SetWireframe();
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| 200 | exporter->ExportKdTree(*mKdTree);
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[468] | 201 |
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[1486] | 202 | exporter->SetForcedMaterial(RgbColor(1,0,0));
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[1563] | 203 | exporter->ExportBox(mViewCellsManager->GetViewSpaceBox());
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[1486] | 204 | exporter->ResetForcedMaterial();
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[468] | 205 |
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[434] | 206 | exporter->SetForcedMaterial(RgbColor(0,0,1));
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| 207 | exporter->ExportBox(tree->GetBBox(leaf));
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| 208 | exporter->ResetForcedMaterial();
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[468] | 209 |
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[434] | 210 | VssRayContainer rays[4];
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| 211 | for (int i=0; i < leaf->rays.size(); i++) {
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| 212 | int k = leaf->rays[i].GetRayClass();
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| 213 | rays[k].push_back(leaf->rays[i].mRay);
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| 214 | }
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[468] | 215 |
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[434] | 216 | // SOURCE RAY
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| 217 | exporter->ExportRays(rays[0], RgbColor(1, 0, 0));
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| 218 | // TERMINATION RAY
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| 219 | exporter->ExportRays(rays[1], RgbColor(1, 1, 1));
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| 220 | // PASSING_RAY
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| 221 | exporter->ExportRays(rays[2], RgbColor(1, 1, 0));
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| 222 | // CONTAINED_RAY
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| 223 | exporter->ExportRays(rays[3], RgbColor(0, 0, 1));
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[427] | 224 |
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[434] | 225 | delete exporter;
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| 226 | return true;
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[427] | 227 | }
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| 228 |
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| 229 | void
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| 230 | VssPreprocessor::ExportVssTreeLeaves(VssTree *tree, const int number)
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| 231 | {
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[434] | 232 | vector<VssTreeLeaf *> leaves;
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| 233 | tree->CollectLeaves(leaves);
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[427] | 234 |
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[434] | 235 | int num = 0;
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| 236 | int i;
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| 237 | float p = number / (float)leaves.size();
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| 238 | for (i=0; i < leaves.size(); i++) {
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| 239 | if (RandomValue(0,1) < p) {
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| 240 | char filename[64];
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| 241 | sprintf(filename, "vss-leaf-%04d.x3d", num);
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| 242 | ExportVssTreeLeaf(filename, tree, leaves[i]);
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| 243 | num++;
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[427] | 244 | }
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[434] | 245 | if (num >= number)
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| 246 | break;
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| 247 | }
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[427] | 248 | }
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| 249 |
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[685] | 250 |
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[535] | 251 | void VssPreprocessor::TestBeamCasting(VssTree *tree,
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| 252 | ViewCellsManager *vm,
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| 253 | const ObjectContainer &objects)
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[530] | 254 | {
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[540] | 255 | //debuggerWidget = new GlDebuggerWidget(renderer);
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[2542] | 256 | //renderer->resize(640, 480);
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[540] | 257 | //debuggerWidget->resize(640, 480);
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| 258 |
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[531] | 259 | vector<VssTreeLeaf *> leaves;
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| 260 | tree->CollectLeaves(leaves);
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[530] | 261 |
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[535] | 262 | Exporter *exporter = Exporter::GetExporter("shafts.x3d");
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| 263 |
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| 264 | exporter->SetWireframe();
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[540] | 265 | exporter->ExportGeometry(objects);
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[535] | 266 | exporter->SetFilled();
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[2542] | 267 |
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[535] | 268 | //Randomize();
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[2542] | 269 | //§§matt
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| 270 | //debuggerWidget = new GlDebuggerWidget(renderer);
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[540] | 271 |
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[2542] | 272 | /*
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| 273 | debuggerWidget->mBeam = beam;
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[540] | 274 | debuggerWidget->mSourceObject = sourceObj;
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| 275 | debuggerWidget->mSamples = 10000;
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| 276 |
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| 277 | Debug << "showing window" << endl;
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[1145] | 278 | debuggerWidget->show();
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[540] | 279 |
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[2542] | 280 | renderer->makeCurrent();
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| 281 | */
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[540] | 282 |
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| 283 | for (int i = 0; i < 10; ++ i)
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[530] | 284 | {
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[540] | 285 | Beam beam;
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| 286 | Intersectable *sourceObj = mObjects[5];
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| 287 |
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[2283] | 288 | const int index = (int)RandomValue(0, (Real)((float)leaves.size() - 0.5f));
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[531] | 289 | VssTreeLeaf *leaf = leaves[index];
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[530] | 290 |
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[535] | 291 | AxisAlignedBox3 dirBox = tree->GetDirBBox(leaf);
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[531] | 292 | AxisAlignedBox3 box = tree->GetBBox(leaf);
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[532] | 293 |
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[535] | 294 | beam.Construct(box, dirBox);
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[532] | 295 |
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| 296 | // collect kd leaves and view cells
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| 297 | mKdTree->CastBeam(beam);
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| 298 | vm->CastBeam(beam);
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| 299 |
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[577] | 300 | Debug << "found " << (int)beam.mViewCells.size() << " view cells and "
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| 301 | << (int)beam.mKdNodes.size() << " kd nodes" << endl;
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[532] | 302 |
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[530] | 303 | BeamSampleStatistics stats;
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[2542] | 304 |
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| 305 | // §§matt
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| 306 | /*
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| 307 | renderer->SampleBeamContributions(sourceObj,
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[589] | 308 | beam,
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| 309 | 200000,
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[531] | 310 | stats);
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[530] | 311 |
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[540] | 312 | char s[64]; sprintf(s, "shaft%04d.png", i);
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| 313 |
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| 314 | QImage image = renderer->toImage();
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| 315 | image.save(s, "PNG");
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[532] | 316 | Debug << "beam statistics: " << stats << endl << endl;
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[2542] | 317 | */
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| 318 |
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[540] | 319 | if (1)
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| 320 | {
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| 321 | AxisAlignedBox3 sbox = mSceneGraph->GetBox();
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| 322 | Vector3 bmin = sbox.Min() - 150.0f;
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| 323 | Vector3 bmax = sbox.Max() + 150.0f;
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| 324 | AxisAlignedBox3 vbox(bmin, bmax);
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[535] | 325 |
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[540] | 326 | exporter->ExportBeam(beam, vbox);
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| 327 | }
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[535] | 328 |
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[2542] | 329 | const bool exportViewCells = false;
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| 330 |
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[535] | 331 | if (exportViewCells)
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| 332 | {
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| 333 | ViewCellContainer::const_iterator it, it_end = beam.mViewCells.end();
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| 334 |
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| 335 | for (it = beam.mViewCells.begin(); it != beam.mViewCells.end(); ++ it)
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| 336 | {
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| 337 | BspNodeGeometry geom;
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| 338 | AxisAlignedBox3 vbox;
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| 339 | vbox.Initialize();
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[538] | 340 | vbox.Include((*it)->GetMesh());
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| 341 |
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| 342 | exporter->SetWireframe();
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[535] | 343 | exporter->ExportBox(vbox);
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[538] | 344 | exporter->SetFilled();
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| 345 | exporter->ExportViewCell(*it);
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[535] | 346 | }
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| 347 | }
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[530] | 348 | }
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[2542] | 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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[1563] | 376 | if (!mLoadViewCells)
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| 377 | {
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[2542] | 378 | // generate new view cells from the scratch using coarse sampling
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[1563] | 379 | ConstructViewCells();
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| 380 | }
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| 381 | #if 0
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| 382 | else
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| 383 | {
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[2542] | 384 | // load view cells from file
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| 385 | // we test success by exporting view cells again
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| 386 | VssRayContainer dummyContainer;
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| 387 | mViewCellsManager->Visualize(mObjects, dummyContainer);
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| 388 |
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[1563] | 389 | mViewCellsManager->ExportViewCells("test.xml.zip", mViewCellsManager->GetExportPvs(), mObjects);
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| 390 | }
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| 391 | #endif
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[579] | 392 |
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[1563] | 393 | VssTree *vssTree = NULL;
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| 394 | const long initialTime = GetTime();
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[677] | 395 |
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[1563] | 396 | if (mLoadInitialSamples)
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| 397 | {
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| 398 | cout << "Loading samples from file ... ";
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[2542] | 399 |
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[1563] | 400 | LoadSamples(mVssRays, mObjects);
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[2542] | 401 |
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[1563] | 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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[2065] | 407 | while (totalSamples < mInitialSamples)
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| 408 | {
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[1563] | 409 | int passContributingSamples = 0;
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| 410 | int passSampleContributions = 0;
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| 411 | int passSamples = 0;
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[598] | 412 |
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[1563] | 413 | int index = 0;
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[1052] | 414 |
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[1563] | 415 | int sampleContributions;
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[590] | 416 |
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[1563] | 417 | int s = Min(mSamplesPerPass, mInitialSamples);
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| 418 | for (int k=0; k < s; k++)
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| 419 | {
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| 420 | Vector3 viewpoint;
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[1404] | 421 |
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[1563] | 422 | mViewCellsManager->GetViewPoint(viewpoint);
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[2199] | 423 | AxisAlignedBox3 vspBox = mViewCellsManager->GetViewSpaceBox();
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| 424 | const Vector3 direction = GetDirection(viewpoint, &vspBox);
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[468] | 425 |
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[1883] | 426 | const SimpleRay sray(viewpoint, direction,
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| 427 | SamplingStrategy::DIRECTION_BOX_BASED_DISTRIBUTION,
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| 428 | 1.0f);
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| 429 | sampleContributions = mRayCaster->CastRay(sray,
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| 430 | mVssRays,
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| 431 | mViewCellsManager->GetViewSpaceBox(),
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| 432 | true);
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[468] | 433 |
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[1563] | 434 | if (sampleContributions) {
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| 435 | passContributingSamples ++;
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| 436 | passSampleContributions += sampleContributions;
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| 437 | }
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| 438 | passSamples++;
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| 439 | totalSamples++;
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| 440 | }
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[468] | 441 |
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[1563] | 442 | mPass++;
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| 443 | int pvsSize = 0;
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| 444 | float avgRayContrib = (passContributingSamples > 0) ?
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| 445 | passSampleContributions/(float)passContributingSamples : 0;
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[468] | 446 |
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[1563] | 447 | cout << "#Pass " << mPass << " : t = " << TimeDiff(startTime, GetTime())*1e-3 << "s" << endl;
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| 448 | cout << "#TotalSamples=" << totalSamples/1000
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| 449 | << "#SampleContributions=" << passSampleContributions << " ("
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| 450 | << 100*passContributingSamples/(float)passSamples<<"%)" << " avgPVS="
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| 451 | << pvsSize/(float)mObjects.size() << endl
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| 452 | << "avg ray contrib=" << avgRayContrib << endl;
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[534] | 453 |
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[1563] | 454 | mStats <<
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| 455 | "#Pass\n" <<mPass<<endl<<
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| 456 | "#Time\n" << TimeDiff(startTime, GetTime())*1e-3 << endl<<
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| 457 | "#TotalSamples\n" << totalSamples<< endl<<
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| 458 | "#SampleContributions\n" << passSampleContributions << endl <<
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| 459 | "#PContributingSamples\n"<<100*passContributingSamples/(float)passSamples<<endl <<
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| 460 | "#AvgPVS\n"<< pvsSize/(float)mObjects.size() << endl <<
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| 461 | "#AvgRayContrib\n" << avgRayContrib << endl;
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[490] | 462 | }
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[1563] | 463 | }
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[534] | 464 |
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[564] | 465 |
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[1563] | 466 | cout << "#totalRayStackSize=" << (int)mVssRays.size() << endl << flush;
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| 467 | Debug << (int)mVssRays.size() << " rays generated in "
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| 468 | << TimeDiff(initialTime, GetTime()) * 1e-3 << " seconds" << endl;
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[401] | 469 |
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[1563] | 470 | if (mStoreInitialSamples)
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| 471 | {
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| 472 | cout << "Writing " << (int)mVssRays.size() << " samples to file ... ";
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| 473 | ExportSamples(mVssRays);
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| 474 | cout << "finished\n" << endl;
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| 475 | }
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[468] | 476 |
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[372] | 477 |
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[1563] | 478 | //int numExportRays = 2000;
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| 479 | int numExportRays = 0;
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[468] | 480 |
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[1563] | 481 | if (numExportRays) {
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| 482 | char filename[64];
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| 483 | sprintf(filename, "vss-rays-initial.x3d");
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| 484 | ExportRays(filename, mVssRays, numExportRays);
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| 485 | }
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[468] | 486 |
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[1563] | 487 | vssTree = new VssTree;
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| 488 | // viewcells = Construct(mVssRays);
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[468] | 489 |
|
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[1563] | 490 | vssTree->Construct(mVssRays, NULL);
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| 491 | cout<<"VssTree root PVS size = "<<vssTree->GetRootPvsSize()<<endl;
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[1074] | 492 |
|
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[1563] | 493 | if (0) ExportRays("kdtree.x3d", mVssRays, 10);
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[430] | 494 |
|
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[1563] | 495 | if (0)
|
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| 496 | {
|
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| 497 | ExportVssTree("vss-tree-100.x3d", vssTree, Vector3(1,0,0));
|
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| 498 | ExportVssTree("vss-tree-001.x3d", vssTree, Vector3(0,0,1));
|
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| 499 | ExportVssTree("vss-tree-101.x3d", vssTree, Vector3(1,0,1));
|
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| 500 | ExportVssTree("vss-tree-101m.x3d", vssTree, Vector3(-1,0,-1));
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| 501 | ExportVssTreeLeaves(vssTree, 10);
|
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| 502 | }
|
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[468] | 503 |
|
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[1563] | 504 | // viewcells->UpdatePVS(newVssRays);
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| 505 | // get viewcells as kd tree boxes
|
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| 506 | vector<AxisAlignedBox3> kdViewcells;
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[2065] | 507 | if (0)
|
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| 508 | {
|
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[1563] | 509 | vector<KdLeaf *> leaves;
|
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| 510 | mKdTree->CollectLeaves(leaves);
|
---|
| 511 | vector<KdLeaf *>::const_iterator it;
|
---|
| 512 | int targetLeaves = 50;
|
---|
| 513 | float prob = targetLeaves/(float)leaves.size();
|
---|
| 514 | for (it = leaves.begin(); it != leaves.end(); ++it)
|
---|
| 515 | if (RandomValue(0.0f,1.0f) < prob)
|
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| 516 | kdViewcells.push_back(mKdTree->GetBox(*it));
|
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[434] | 517 |
|
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[1563] | 518 | float avgPvs = GetAvgPvsSize(vssTree, kdViewcells);
|
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| 519 | cout<<"Initial average PVS size = "<<avgPvs<<endl;
|
---|
| 520 | }
|
---|
[468] | 521 |
|
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[448] | 522 |
|
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[1563] | 523 | int samples = 0;
|
---|
| 524 | int pass = 0;
|
---|
[468] | 525 |
|
---|
| 526 |
|
---|
[1563] | 527 | // cast view cell samples
|
---|
| 528 | while (samples < mVssSamples)
|
---|
| 529 | {
|
---|
| 530 | int num = mVssSamplesPerPass;
|
---|
| 531 | SimpleRayContainer rays;
|
---|
| 532 | VssRayContainer vssRays;
|
---|
[427] | 533 |
|
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[2065] | 534 | if (!mUseImportanceSampling)
|
---|
| 535 | {
|
---|
[1563] | 536 | for (int j=0; j < num; j++) {
|
---|
| 537 | Vector3 viewpoint;
|
---|
| 538 | mViewCellsManager->GetViewPoint(viewpoint);
|
---|
| 539 | Vector3 direction = GetDirection(viewpoint, NULL);
|
---|
[1883] | 540 | rays.push_back(SimpleRay(viewpoint, direction,
|
---|
| 541 | SamplingStrategy::DIRECTION_BOX_BASED_DISTRIBUTION,
|
---|
| 542 | 1.0f)
|
---|
| 543 | );
|
---|
[1563] | 544 | }
|
---|
[2065] | 545 | }
|
---|
| 546 | else
|
---|
| 547 | {
|
---|
[1563] | 548 | num = GenerateImportanceRays(vssTree, num, rays);
|
---|
| 549 | }
|
---|
[430] | 550 |
|
---|
[1563] | 551 | CastRays(rays, vssRays, true);
|
---|
| 552 | vssTree->AddRays(vssRays);
|
---|
[468] | 553 |
|
---|
[2065] | 554 | if (0)
|
---|
| 555 | {
|
---|
[1563] | 556 | int subdivided = vssTree->UpdateSubdivision();
|
---|
| 557 | cout<<"subdivided leafs = "<<subdivided<<endl;
|
---|
| 558 | }
|
---|
| 559 |
|
---|
| 560 | float avgPvs = GetAvgPvsSize(vssTree, kdViewcells);
|
---|
| 561 | cout<<"Average PVS size = "<<avgPvs<<endl;
|
---|
| 562 |
|
---|
| 563 | /// compute view cell contribution of rays
|
---|
| 564 | mViewCellsManager->ComputeSampleContributions(vssRays, true, false);
|
---|
| 565 |
|
---|
| 566 | if (numExportRays) {
|
---|
| 567 | char filename[64];
|
---|
| 568 | if (mUseImportanceSampling)
|
---|
| 569 | sprintf(filename, "vss-rays-i%04d.x3d", pass);
|
---|
| 570 | else
|
---|
| 571 | sprintf(filename, "vss-rays-%04d.x3d", pass);
|
---|
| 572 |
|
---|
| 573 | ExportRays(filename, vssRays, numExportRays);
|
---|
| 574 | }
|
---|
| 575 |
|
---|
[2065] | 576 | samples += num;
|
---|
| 577 |
|
---|
[1563] | 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 |
|
---|
[2063] | 617 |
|
---|
| 618 | void VssPreprocessor::DeterminePvsObjects(VssRayContainer &rays)
|
---|
| 619 | {
|
---|
[2187] | 620 | // store higher order object
|
---|
[2198] | 621 | mViewCellsManager->DeterminePvsObjects(rays, !mViewCellsManager->ViewCellsConstructed());
|
---|
[1743] | 622 | }
|
---|
[2063] | 623 |
|
---|
| 624 |
|
---|
| 625 | }
|
---|