[447] | 1 | #include "SceneGraph.h"
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| 2 | #include "KdTree.h"
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| 3 | #include "RssPreprocessor.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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| 9 | #include "VssRay.h"
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| 10 | #include "RssTree.h"
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[451] | 11 | #include "ViewCellsManager.h"
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[452] | 12 | #include "RenderSimulator.h"
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[447] | 13 |
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[452] | 14 | static bool useViewSpaceBox = true;
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[447] | 15 | static bool use2dSampling = false;
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| 16 | static bool fromBoxVisibility = true;
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| 17 |
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| 18 | static bool exportPvs = false;
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[459] | 19 | static int numExportRays = 10000;
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| 20 | // static int numExportRays = 0;
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[447] | 21 |
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| 22 | RssPreprocessor::RssPreprocessor():
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| 23 | mPass(0),
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| 24 | mVssRays()
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| 25 | {
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| 26 | // this should increase coherence of the samples
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| 27 | environment->GetIntValue("RssPreprocessor.samplesPerPass", mSamplesPerPass);
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| 28 | environment->GetIntValue("RssPreprocessor.initialSamples", mInitialSamples);
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| 29 | environment->GetIntValue("RssPreprocessor.vssSamples", mRssSamples);
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| 30 | environment->GetIntValue("RssPreprocessor.vssSamplesPerPass", mRssSamplesPerPass);
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| 31 | environment->GetBoolValue("RssPreprocessor.useImportanceSampling", mUseImportanceSampling);
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| 32 | environment->GetIntValue("BspTree.Construction.samples", mBspConstructionSamples);
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| 33 |
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| 34 | mStats.open("stats.log");
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| 35 | }
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| 36 |
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| 37 | RssPreprocessor::~RssPreprocessor()
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| 38 | {
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| 39 | CLEAR_CONTAINER(mVssRays);
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| 40 | }
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| 41 |
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| 42 | void
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| 43 | RssPreprocessor::SetupRay(Ray &ray,
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| 44 | const Vector3 &point,
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| 45 | const Vector3 &direction
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| 46 | )
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| 47 | {
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| 48 | ray.intersections.clear();
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| 49 | // do not store anything else then intersections at the ray
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| 50 | ray.Init(point, direction, Ray::LOCAL_RAY);
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| 51 | }
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| 52 |
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| 53 | int
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| 54 | RssPreprocessor::CastRay(
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| 55 | Vector3 &viewPoint,
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| 56 | Vector3 &direction,
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| 57 | VssRayContainer &vssRays
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| 58 | )
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| 59 | {
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| 60 | int hits = 0;
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| 61 | static Ray ray;
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| 62 | AxisAlignedBox3 box = mKdTree->GetBox();
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| 63 |
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| 64 | AxisAlignedBox3 sbox = box;
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| 65 | sbox.Enlarge(Vector3(-Limits::Small));
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| 66 | if (!sbox.IsInside(viewPoint))
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| 67 | return 0;
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| 68 |
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| 69 | SetupRay(ray, viewPoint, direction);
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| 70 | // cast ray to KD tree to find intersection with other objects
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| 71 | Intersectable *objectA, *objectB;
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| 72 | Vector3 pointA, pointB;
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| 73 | float bsize = Magnitude(box.Size());
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| 74 |
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| 75 | if (mKdTree->CastRay(ray)) {
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| 76 | objectA = ray.intersections[0].mObject;
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| 77 | pointA = ray.Extrap(ray.intersections[0].mT);
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| 78 | } else {
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| 79 | objectA = NULL;
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| 80 | // compute intersection with the scene bounding box
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| 81 | float tmin, tmax;
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| 82 | box.ComputeMinMaxT(ray, &tmin, &tmax);
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| 83 | if (tmax > bsize) {
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| 84 | //cerr<<"Warning: tmax > box size tmax="<<tmax<<" tmin="<<tmin<<" size="<<bsize<<endl;
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| 85 | //cerr<<"ray"<<ray<<endl;
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| 86 | }
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| 87 | pointA = ray.Extrap(tmax);
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| 88 | }
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| 89 |
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| 90 | bool detectEmptyViewSpace = true;
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| 91 |
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| 92 | if (detectEmptyViewSpace) {
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| 93 | SetupRay(ray, pointA, -direction);
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| 94 | } else
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| 95 | SetupRay(ray, viewPoint, -direction);
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| 96 |
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| 97 |
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| 98 | if (mKdTree->CastRay(ray)) {
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| 99 | objectB = ray.intersections[0].mObject;
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| 100 | pointB = ray.Extrap(ray.intersections[0].mT);
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| 101 | } else {
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| 102 | objectB = NULL;
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| 103 | float tmin, tmax;
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| 104 | box.ComputeMinMaxT(ray, &tmin, &tmax);
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| 105 | if (tmax > bsize) {
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| 106 | //cerr<<"Warning: tmax > box size tmax="<<tmax<<" tmin="<<tmin<<" size="<<bsize<<endl;
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| 107 | //cerr<<"ray"<<ray<<endl;
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| 108 | }
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| 109 | pointB = ray.Extrap(tmax);
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| 110 | }
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| 111 |
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| 112 | VssRay *vssRay = NULL;
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| 113 |
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| 114 | bool validSample = true;
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| 115 | if (detectEmptyViewSpace) {
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| 116 | // check if the viewpoint lies on the line segment AB
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| 117 | if (Distance(pointA, pointB) <
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| 118 | Distance(viewPoint, pointA) + Distance(viewPoint, pointB) - Limits::Small) {
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| 119 | validSample = false;
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| 120 | }
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| 121 | }
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| 122 |
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| 123 | if (validSample) {
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| 124 | if (objectA) {
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| 125 | vssRay = new VssRay(pointB,
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| 126 | pointA,
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| 127 | objectB,
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| 128 | objectA);
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| 129 | vssRays.push_back(vssRay);
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| 130 | hits ++;
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| 131 | }
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| 132 |
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| 133 | if (objectB) {
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| 134 | vssRay = new VssRay(pointA,
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| 135 | pointB,
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| 136 | objectA,
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| 137 | objectB);
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| 138 | vssRays.push_back(vssRay);
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| 139 | hits ++;
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| 140 | }
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| 141 | }
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| 142 |
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| 143 | return hits;
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| 144 | }
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| 145 |
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| 146 |
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| 147 | Vector3
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| 148 | RssPreprocessor::GetViewpoint(AxisAlignedBox3 *viewSpaceBox)
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| 149 | {
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| 150 | AxisAlignedBox3 box;
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| 151 |
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| 152 | if (viewSpaceBox)
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| 153 | box =*viewSpaceBox;
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| 154 | else
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| 155 | box = mKdTree->GetBox();
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| 156 |
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| 157 | // shrink the box in the y direction
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| 158 | return box.GetRandomPoint();
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| 159 | }
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| 160 |
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| 161 | Vector3
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| 162 | RssPreprocessor::GetDirection(const Vector3 &viewpoint,
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| 163 | AxisAlignedBox3 *viewSpaceBox
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| 164 | )
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| 165 | {
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| 166 | Vector3 point;
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| 167 | if (!use2dSampling) {
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| 168 | Vector3 normal;
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| 169 | int i = RandomValue(0, mObjects.size()-1);
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| 170 | Intersectable *object = mObjects[i];
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| 171 | object->GetRandomSurfacePoint(point, normal);
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| 172 | } else {
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| 173 | AxisAlignedBox3 box;
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| 174 |
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| 175 | if (viewSpaceBox)
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| 176 | box =*viewSpaceBox;
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| 177 | else
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| 178 | box = mKdTree->GetBox();
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| 179 |
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| 180 | point = box.GetRandomPoint();
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| 181 | point.y = viewpoint.y;
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| 182 | }
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| 183 |
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| 184 | return point - viewpoint;
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| 185 | }
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| 186 |
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| 187 | int
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| 188 | RssPreprocessor::GenerateImportanceRays(RssTree *rssTree,
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| 189 | const int desiredSamples,
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| 190 | SimpleRayContainer &rays
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| 191 | )
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| 192 | {
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| 193 | int num;
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| 194 |
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| 195 | float avgPvsSize;
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| 196 | float avgRayContribution;
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| 197 | float avgPvsEntropy;
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| 198 | float avgRayLengthEntropy;
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| 199 | float avgImportance;
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| 200 |
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| 201 | rssTree->GetTreeStatistics(
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| 202 | avgPvsSize,
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| 203 | avgRayContribution,
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| 204 | avgPvsEntropy,
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| 205 | avgRayLengthEntropy,
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| 206 | avgImportance);
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| 207 |
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| 208 | cout<<
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| 209 | "#AVG_PVS_SIZE\n"<<avgPvsSize<<endl<<
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| 210 | "#AVG_RAY_CONTRIB\n"<<avgRayContribution<<endl<<
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| 211 | "#AVG_PVS_ENTROPY\n"<<avgPvsEntropy<<endl<<
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| 212 | "#AVG_RAY_LENGTH_ENTROPY\n"<<avgRayLengthEntropy<<endl<<
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| 213 | "#AVG_IMPORTANCE\n"<<avgImportance<<endl;
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| 214 |
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| 215 | if (0) {
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| 216 | float p = desiredSamples/(float)(avgRayContribution*rssTree->stat.Leaves());
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| 217 | num = rssTree->GenerateRays(p, rays);
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| 218 | } else {
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[459] | 219 | int leaves = rssTree->stat.Leaves()/1;
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[447] | 220 | num = rssTree->GenerateRays(desiredSamples, leaves, rays);
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| 221 | }
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| 222 |
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| 223 | cout<<"Generated "<<num<<" rays."<<endl;
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| 224 |
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| 225 | return num;
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| 226 | }
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| 227 |
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| 228 |
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| 229 | bool
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| 230 | RssPreprocessor::ExportRays(const char *filename,
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| 231 | const VssRayContainer &vssRays,
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| 232 | const int number
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| 233 | )
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| 234 | {
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| 235 | cout<<"Exporting vss rays..."<<endl<<flush;
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| 236 |
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| 237 | float prob = number/(float)vssRays.size();
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| 238 |
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| 239 |
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| 240 | Exporter *exporter = NULL;
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| 241 | exporter = Exporter::GetExporter(filename);
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| 242 | // exporter->SetWireframe();
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| 243 | // exporter->ExportKdTree(*mKdTree);
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| 244 | exporter->SetFilled();
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| 245 | exporter->ExportScene(mSceneGraph->mRoot);
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| 246 | exporter->SetWireframe();
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| 247 |
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| 248 | if (mViewSpaceBox) {
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| 249 | exporter->SetForcedMaterial(RgbColor(1,0,1));
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| 250 | exporter->ExportBox(*mViewSpaceBox);
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| 251 | exporter->ResetForcedMaterial();
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| 252 | }
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| 253 |
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| 254 | VssRayContainer rays; for (int i=0; i < vssRays.size(); i++)
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| 255 | if (RandomValue(0,1) < prob)
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| 256 | rays.push_back(vssRays[i]);
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| 257 |
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| 258 | exporter->ExportRays(rays, RgbColor(1, 0, 0));
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| 259 |
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| 260 | delete exporter;
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| 261 |
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| 262 | cout<<"done."<<endl<<flush;
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| 263 |
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| 264 | return true;
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| 265 | }
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| 266 |
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| 267 |
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| 268 | bool
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| 269 | RssPreprocessor::ExportRssTree(char *filename,
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| 270 | RssTree *tree,
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| 271 | const Vector3 &dir
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| 272 | )
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| 273 | {
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| 274 | Exporter *exporter = Exporter::GetExporter(filename);
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| 275 | exporter->SetFilled();
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| 276 | exporter->ExportScene(mSceneGraph->mRoot);
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| 277 | // exporter->SetWireframe();
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| 278 | bool result = exporter->ExportRssTree2( *tree, dir );
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| 279 | delete exporter;
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| 280 | return result;
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| 281 | }
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| 282 |
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| 283 | bool
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| 284 | RssPreprocessor::ExportRssTreeLeaf(char *filename,
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| 285 | RssTree *tree,
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| 286 | RssTreeLeaf *leaf)
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| 287 | {
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| 288 | Exporter *exporter = NULL;
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| 289 | exporter = Exporter::GetExporter(filename);
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| 290 | exporter->SetWireframe();
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| 291 | exporter->ExportKdTree(*mKdTree);
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| 292 |
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| 293 | if (mViewSpaceBox) {
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| 294 | exporter->SetForcedMaterial(RgbColor(1,0,0));
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| 295 | exporter->ExportBox(*mViewSpaceBox);
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| 296 | exporter->ResetForcedMaterial();
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| 297 | }
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| 298 |
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| 299 | exporter->SetForcedMaterial(RgbColor(0,0,1));
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| 300 | exporter->ExportBox(tree->GetBBox(leaf));
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| 301 | exporter->ResetForcedMaterial();
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| 302 |
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| 303 | VssRayContainer rays[4];
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| 304 | for (int i=0; i < leaf->rays.size(); i++) {
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| 305 | int k = leaf->rays[i].GetRayClass();
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| 306 | rays[k].push_back(leaf->rays[i].mRay);
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| 307 | }
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| 308 |
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| 309 | // SOURCE RAY
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| 310 | exporter->ExportRays(rays[0], RgbColor(1, 0, 0));
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| 311 | // TERMINATION RAY
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| 312 | exporter->ExportRays(rays[1], RgbColor(1, 1, 1));
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| 313 | // PASSING_RAY
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| 314 | exporter->ExportRays(rays[2], RgbColor(1, 1, 0));
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| 315 | // CONTAINED_RAY
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| 316 | exporter->ExportRays(rays[3], RgbColor(0, 0, 1));
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| 317 |
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| 318 | delete exporter;
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| 319 | return true;
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| 320 | }
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| 321 |
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| 322 | void
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| 323 | RssPreprocessor::ExportRssTreeLeaves(RssTree *tree, const int number)
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| 324 | {
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| 325 | vector<RssTreeLeaf *> leaves;
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| 326 | tree->CollectLeaves(leaves);
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| 327 |
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| 328 | int num = 0;
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| 329 | int i;
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| 330 | float p = number / (float)leaves.size();
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| 331 | for (i=0; i < leaves.size(); i++) {
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| 332 | if (RandomValue(0,1) < p) {
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| 333 | char filename[64];
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| 334 | sprintf(filename, "rss-leaf-%04d.x3d", num);
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| 335 | ExportRssTreeLeaf(filename, tree, leaves[i]);
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| 336 | num++;
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| 337 | }
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| 338 | if (num >= number)
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| 339 | break;
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| 340 | }
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| 341 | }
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| 342 |
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| 343 |
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| 344 | float
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| 345 | RssPreprocessor::GetAvgPvsSize(RssTree *tree,
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| 346 | const vector<AxisAlignedBox3> &viewcells
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| 347 | )
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| 348 | {
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| 349 | vector<AxisAlignedBox3>::const_iterator it, it_end = viewcells.end();
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| 350 |
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| 351 | int sum = 0;
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| 352 | for (it = viewcells.begin(); it != it_end; ++ it)
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| 353 | sum += tree->GetPvsSize(*it);
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| 354 |
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| 355 | return sum/(float)viewcells.size();
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| 356 | }
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| 357 |
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| 358 |
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| 359 | void
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| 360 | RssPreprocessor::ExportPvs(char *filename,
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| 361 | RssTree *rssTree
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| 362 | )
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| 363 | {
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| 364 | ObjectContainer pvs;
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| 365 | if (rssTree->CollectRootPvs(pvs)) {
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| 366 | Exporter *exporter = Exporter::GetExporter(filename);
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| 367 | exporter->SetFilled();
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| 368 | exporter->ExportGeometry(pvs);
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[459] | 369 | exporter->SetWireframe();
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| 370 | exporter->ExportBox(rssTree->bbox);
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| 371 | exporter->ExportViewpoint(rssTree->bbox.Center(), Vector3(1,0,0));
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[447] | 372 | delete exporter;
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| 373 | }
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| 374 | }
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| 375 |
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| 376 | bool
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| 377 | RssPreprocessor::ComputeVisibility()
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| 378 | {
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| 379 |
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| 380 | mSceneGraph->CollectObjects(&mObjects);
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| 381 |
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| 382 | long startTime = GetTime();
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| 383 |
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| 384 | int totalSamples = 0;
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| 385 |
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[451] | 386 | /// Rays used for post processing and visualizations.
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| 387 | RayContainer storedRays;
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[447] | 388 |
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| 389 | AxisAlignedBox3 *box = new AxisAlignedBox3(mKdTree->GetBox());
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| 390 |
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| 391 | if (fromBoxVisibility) {
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[459] | 392 | float m = box->Min(1);
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| 393 | float bsize = box->Size(1);
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| 394 |
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| 395 | float size = 0.02f;
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[447] | 396 | float s = 0.5f - size;
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| 397 | float olds = Magnitude(box->Size());
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| 398 | box->Enlarge(box->Size()*Vector3(-s));
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[459] | 399 | // Vector3 translation = Vector3(-olds*0.2f, 0, 0);
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| 400 | Vector3 translation = Vector3(-0.05*olds, 0, 0);
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[447] | 401 | box->SetMin(box->Min() + translation);
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| 402 | box->SetMax(box->Max() + translation);
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[459] | 403 |
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| 404 | box->SetMin(1, m + bsize*0.1);
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| 405 | box->SetMax(1, m + bsize*0.6);
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| 406 |
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| 407 |
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[447] | 408 | } else {
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| 409 |
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| 410 | // sample city like heights
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[459] | 411 | float m = box->Min(1);
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| 412 | float bsize = box->Size(1);
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| 413 | box->SetMin(1, m + bsize*0.2);
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| 414 | box->SetMax(1, m + bsize*0.3);
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[447] | 415 | }
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| 416 |
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| 417 | if (use2dSampling)
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| 418 | box->SetMax(1, box->Min(1));
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| 419 |
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| 420 | if (useViewSpaceBox)
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| 421 | mViewSpaceBox = box;
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| 422 | else
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| 423 | mViewSpaceBox = NULL;
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| 424 |
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| 425 |
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| 426 | RssTree *rssTree = NULL;
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| 427 |
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| 428 | while (totalSamples < mInitialSamples) {
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| 429 | int passContributingSamples = 0;
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| 430 | int passSampleContributions = 0;
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| 431 | int passSamples = 0;
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| 432 | int index = 0;
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| 433 |
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| 434 | int sampleContributions;
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| 435 |
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| 436 | int s = Min(mSamplesPerPass, mInitialSamples);
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| 437 | for (int k=0; k < s; k++) {
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| 438 |
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| 439 | Vector3 viewpoint = GetViewpoint(mViewSpaceBox);
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| 440 | Vector3 direction = GetDirection(viewpoint, mViewSpaceBox);
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| 441 |
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[452] | 442 | sampleContributions = CastRay(viewpoint, direction, mVssRays);
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[447] | 443 |
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| 444 |
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| 445 | //-- CORR matt: put block inside loop
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| 446 | if (sampleContributions) {
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| 447 | passContributingSamples ++;
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| 448 | passSampleContributions += sampleContributions;
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| 449 | }
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| 450 | passSamples++;
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| 451 | totalSamples++;
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| 452 | }
|
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| 453 |
|
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| 454 | mPass++;
|
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| 455 |
|
---|
| 456 | int pvsSize = 0;
|
---|
| 457 | float avgRayContrib = (passContributingSamples > 0) ?
|
---|
| 458 | passSampleContributions/(float)passContributingSamples : 0;
|
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| 459 |
|
---|
| 460 | cout << "#Pass " << mPass << " : t = " << TimeDiff(startTime, GetTime())*1e-3 << "s" << endl;
|
---|
| 461 | cout << "#TotalSamples=" << totalSamples/1000
|
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| 462 | << "k #SampleContributions=" << passSampleContributions << " ("
|
---|
| 463 | << 100*passContributingSamples/(float)passSamples<<"%)" << " avgPVS="
|
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| 464 | << pvsSize/(float)mObjects.size() << endl
|
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| 465 | << "avg ray contrib=" << avgRayContrib << endl;
|
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| 466 |
|
---|
| 467 | mStats <<
|
---|
| 468 | "#Pass\n" <<mPass<<endl<<
|
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| 469 | "#Time\n" << TimeDiff(startTime, GetTime())*1e-3 << endl<<
|
---|
| 470 | "#TotalSamples\n" << totalSamples<< endl<<
|
---|
| 471 | "#SampleContributions\n" << passSampleContributions << endl <<
|
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| 472 | "#PContributingSamples\n"<<100*passContributingSamples/(float)passSamples<<endl <<
|
---|
| 473 | "#AvgPVS\n"<< pvsSize/(float)mObjects.size() << endl <<
|
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| 474 | "#AvgRayContrib\n" << avgRayContrib << endl;
|
---|
| 475 | }
|
---|
| 476 |
|
---|
| 477 | cout << "#totalPvsSize=" << mKdTree->CollectLeafPvs() << endl;
|
---|
| 478 | cout << "#totalRayStackSize=" << mVssRays.size() << endl <<flush;
|
---|
| 479 |
|
---|
| 480 |
|
---|
| 481 | if (numExportRays) {
|
---|
| 482 | char filename[64];
|
---|
| 483 | sprintf(filename, "rss-rays-initial.x3d");
|
---|
| 484 | ExportRays(filename, mVssRays, numExportRays);
|
---|
| 485 | }
|
---|
| 486 |
|
---|
[451] | 487 |
|
---|
| 488 | // construct view cells
|
---|
| 489 | mViewCellsManager->Construct(mObjects, mVssRays, mViewSpaceBox);
|
---|
| 490 |
|
---|
[447] | 491 | rssTree = new RssTree;
|
---|
| 492 | // viewcells = Construct(mVssRays);
|
---|
| 493 |
|
---|
| 494 | if (fromBoxVisibility)
|
---|
| 495 | rssTree->Construct(mVssRays, mViewSpaceBox);
|
---|
| 496 | else
|
---|
| 497 | rssTree->Construct(mVssRays, NULL);
|
---|
| 498 |
|
---|
| 499 | cout<<"RssTree root PVS size = "<<rssTree->GetRootPvsSize()<<endl;
|
---|
| 500 |
|
---|
| 501 | ExportRssTree("rss-tree-100.x3d", rssTree, Vector3(1,0,0));
|
---|
| 502 | ExportRssTree("rss-tree-001.x3d", rssTree, Vector3(0,0,1));
|
---|
| 503 | ExportRssTree("rss-tree-101.x3d", rssTree, Vector3(1,0,1));
|
---|
| 504 | ExportRssTree("rss-tree-101m.x3d", rssTree, Vector3(-1,0,-1));
|
---|
| 505 |
|
---|
| 506 | ExportRssTreeLeaves(rssTree, 10);
|
---|
| 507 |
|
---|
[459] | 508 | if (exportPvs) {
|
---|
| 509 | ExportPvs("rss-pvs-initial.x3d", rssTree);
|
---|
| 510 | }
|
---|
| 511 |
|
---|
[447] | 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));
|
---|
| 524 |
|
---|
| 525 | float avgPvs = GetAvgPvsSize(rssTree, kdViewcells);
|
---|
| 526 | cout<<"Initial average PVS size = "<<avgPvs<<endl;
|
---|
| 527 | }
|
---|
| 528 |
|
---|
| 529 |
|
---|
| 530 | int samples = 0;
|
---|
| 531 | int pass = 0;
|
---|
| 532 | while (1) {
|
---|
| 533 | int num = mRssSamplesPerPass;
|
---|
| 534 | SimpleRayContainer rays;
|
---|
| 535 | VssRayContainer vssRays;
|
---|
| 536 |
|
---|
| 537 | if (!mUseImportanceSampling) {
|
---|
| 538 | for (int j=0; j < num; j++) {
|
---|
| 539 | Vector3 viewpoint = GetViewpoint(mViewSpaceBox);
|
---|
| 540 | Vector3 direction = GetDirection(viewpoint, mViewSpaceBox);
|
---|
| 541 | rays.push_back(SimpleRay(viewpoint, direction));
|
---|
| 542 | }
|
---|
| 543 | } else {
|
---|
| 544 | num = GenerateImportanceRays(rssTree, num, rays);
|
---|
| 545 | }
|
---|
| 546 |
|
---|
| 547 |
|
---|
| 548 | for (int i=0; i < rays.size(); i++)
|
---|
| 549 | CastRay(rays[i].mOrigin, rays[i].mDirection, vssRays);
|
---|
| 550 |
|
---|
| 551 | rssTree->AddRays(vssRays);
|
---|
| 552 |
|
---|
| 553 | if (1) {
|
---|
| 554 | int subdivided = rssTree->UpdateSubdivision();
|
---|
| 555 | cout<<"subdivided leafs = "<<subdivided<<endl;
|
---|
[459] | 556 | cout<<"#total leaves = "<<rssTree->stat.Leaves()<<endl;
|
---|
| 557 |
|
---|
[447] | 558 | }
|
---|
| 559 |
|
---|
| 560 | float avgPvs = GetAvgPvsSize(rssTree, kdViewcells);
|
---|
| 561 | cout<<"Average PVS size = "<<avgPvs<<endl;
|
---|
| 562 |
|
---|
| 563 | if (numExportRays) {
|
---|
| 564 | char filename[64];
|
---|
| 565 | if (mUseImportanceSampling)
|
---|
| 566 | sprintf(filename, "rss-rays-i%04d.x3d", pass);
|
---|
| 567 | else
|
---|
| 568 | sprintf(filename, "rss-rays-%04d.x3d", pass);
|
---|
| 569 |
|
---|
| 570 | ExportRays(filename, vssRays, numExportRays);
|
---|
| 571 | }
|
---|
| 572 |
|
---|
[451] | 573 | //-- prepare traversal rays for view cell intersections
|
---|
| 574 | RayContainer passRays;
|
---|
| 575 |
|
---|
| 576 | VssRayContainer::const_iterator it, it_end = vssRays.end();
|
---|
| 577 |
|
---|
| 578 | for (it = vssRays.begin(); it != it_end; ++ it)
|
---|
| 579 | passRays.push_back(new Ray(*(*it)));
|
---|
| 580 |
|
---|
| 581 | int sampleContributions = 0;
|
---|
| 582 | int contributingSamples = 0;
|
---|
| 583 |
|
---|
| 584 | /// compute view cell contribution of rays
|
---|
| 585 | mViewCellsManager->ComputeSampleContributions(passRays,
|
---|
| 586 | sampleContributions,
|
---|
| 587 | contributingSamples);
|
---|
| 588 |
|
---|
| 589 | //-- save rays for post processing
|
---|
| 590 | if (((int)storedRays.size() < mViewCellsManager->GetPostProcessSamples()) ||
|
---|
| 591 | ((int)storedRays.size() < mViewCellsManager->GetVisualizationSamples()))
|
---|
| 592 | {
|
---|
| 593 | RayContainer::const_iterator it, it_end = passRays.end();
|
---|
| 594 |
|
---|
| 595 | for (it = passRays.begin(); it != it_end; ++ it)
|
---|
| 596 | storedRays.push_back(new Ray(*(*it)));
|
---|
| 597 | }
|
---|
| 598 | else
|
---|
| 599 | {
|
---|
| 600 | CLEAR_CONTAINER(passRays);
|
---|
| 601 | }
|
---|
| 602 |
|
---|
[447] | 603 | samples+=num;
|
---|
| 604 | float pvs = rssTree->GetAvgPvsSize();
|
---|
| 605 | cout<<"*****************************\n";
|
---|
| 606 | cout<<samples<<" avgPVS ="<<pvs<<endl;
|
---|
[452] | 607 | cout<<"sample contributions ="<<sampleContributions<<endl;
|
---|
| 608 | cout<<"contributing sample ="<<contributingSamples<<endl;
|
---|
[447] | 609 | cout<<"RssTree root PVS size = "<<rssTree->GetRootPvsSize()<<endl;
|
---|
| 610 | cout<<"*****************************\n";
|
---|
| 611 |
|
---|
| 612 | if (exportPvs) {
|
---|
| 613 | char filename[64];
|
---|
| 614 | sprintf(filename, "rss-pvs-%04d.x3d", pass);
|
---|
| 615 | ExportPvs(filename, rssTree);
|
---|
| 616 | }
|
---|
| 617 |
|
---|
| 618 | if (samples >= mRssSamples)
|
---|
| 619 | break;
|
---|
| 620 |
|
---|
| 621 |
|
---|
| 622 | pass++;
|
---|
| 623 | }
|
---|
| 624 |
|
---|
[452] | 625 | //-- post process view cells
|
---|
| 626 | mViewCellsManager->PostProcess(mObjects, storedRays);
|
---|
| 627 |
|
---|
| 628 | //-- several visualizations and statistics
|
---|
| 629 | Debug << "===== Final view cells statistics ==========" << endl;
|
---|
| 630 |
|
---|
| 631 | mViewCellsManager->PrintStatistics(Debug);
|
---|
| 632 |
|
---|
| 633 | //-- render simulation after merge
|
---|
| 634 | cout << "\nevaluating render time of final view cells ... ";
|
---|
| 635 |
|
---|
| 636 | const SimulationStatistics ss = mViewCellsManager->SimulateRendering();
|
---|
| 637 |
|
---|
| 638 | cout << " finished" << endl;
|
---|
| 639 |
|
---|
| 640 | cout << ss << endl;
|
---|
| 641 | Debug << ss << endl;
|
---|
| 642 |
|
---|
| 643 | mViewCellsManager->Visualize(mObjects, storedRays);
|
---|
| 644 |
|
---|
[447] | 645 | delete rssTree;
|
---|
| 646 |
|
---|
| 647 | return true;
|
---|
| 648 | }
|
---|
| 649 |
|
---|