[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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[372] | 13 |
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[427] | 14 | bool use2dSampling = false;
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[501] | 15 | bool useViewspacePlane = true;
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[427] | 16 |
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[372] | 17 | VssPreprocessor::VssPreprocessor():
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[434] | 18 | mPass(0),
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| 19 | mVssRays()
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[372] | 20 | {
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| 21 | // this should increase coherence of the samples
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[376] | 22 | environment->GetIntValue("VssPreprocessor.samplesPerPass", mSamplesPerPass);
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[403] | 23 | environment->GetIntValue("VssPreprocessor.initialSamples", mInitialSamples);
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| 24 | environment->GetIntValue("VssPreprocessor.vssSamples", mVssSamples);
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[427] | 25 | environment->GetIntValue("VssPreprocessor.vssSamplesPerPass", mVssSamplesPerPass);
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[429] | 26 | environment->GetBoolValue("VssPreprocessor.useImportanceSampling", mUseImportanceSampling);
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[468] | 27 |
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[490] | 28 | environment->GetBoolValue("VssPreprocessor.loadInitialSamples", mLoadInitialSamples);
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| 29 | environment->GetBoolValue("VssPreprocessor.storeInitialSamples", mStoreInitialSamples);
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[501] | 30 | environment->GetBoolValue("VssPreprocessor.useViewSpaceBox", mUseViewSpaceBox);
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[490] | 31 |
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[372] | 32 | mStats.open("stats.log");
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| 33 | }
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| 34 |
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| 35 | VssPreprocessor::~VssPreprocessor()
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| 36 | {
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[434] | 37 | CLEAR_CONTAINER(mVssRays);
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[372] | 38 | }
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| 39 |
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| 40 | void
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[468] | 41 | VssPreprocessor::SetupRay(Ray &ray,
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| 42 | const Vector3 &point,
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[434] | 43 | const Vector3 &direction
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| 44 | )
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[372] | 45 | {
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[466] | 46 | ray.Clear();
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[434] | 47 | // do not store anything else then intersections at the ray
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[374] | 48 | ray.Init(point, direction, Ray::LOCAL_RAY);
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[372] | 49 | }
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| 50 |
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[386] | 51 | int
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[376] | 52 | VssPreprocessor::CastRay(
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[434] | 53 | Vector3 &viewPoint,
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| 54 | Vector3 &direction,
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| 55 | VssRayContainer &vssRays
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| 56 | )
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[372] | 57 | {
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[499] | 58 |
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| 59 | int hits = 0;
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[434] | 60 | static Ray ray;
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| 61 | AxisAlignedBox3 box = mKdTree->GetBox();
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[427] | 62 |
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[434] | 63 | AxisAlignedBox3 sbox = box;
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| 64 | sbox.Enlarge(Vector3(-Limits::Small));
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| 65 | if (!sbox.IsInside(viewPoint))
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| 66 | return 0;
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[499] | 67 |
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[434] | 68 | SetupRay(ray, viewPoint, direction);
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| 69 | // cast ray to KD tree to find intersection with other objects
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| 70 | Intersectable *objectA, *objectB;
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| 71 | Vector3 pointA, pointB;
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| 72 | float bsize = Magnitude(box.Size());
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[499] | 73 |
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| 74 |
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[434] | 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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[499] | 82 | if (box.ComputeMinMaxT(ray, &tmin, &tmax) && tmin < tmax)
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| 83 | pointA = ray.Extrap(tmax);
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| 84 | else
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| 85 | return 0;
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[434] | 86 | }
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[386] | 87 |
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[434] | 88 | bool detectEmptyViewSpace = true;
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[499] | 89 |
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[434] | 90 | if (detectEmptyViewSpace) {
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| 91 | SetupRay(ray, pointA, -direction);
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| 92 | } else
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| 93 | SetupRay(ray, viewPoint, -direction);
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[499] | 94 |
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| 95 |
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[434] | 96 | if (mKdTree->CastRay(ray)) {
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| 97 | objectB = ray.intersections[0].mObject;
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| 98 | pointB = ray.Extrap(ray.intersections[0].mT);
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| 99 | } else {
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| 100 | objectB = NULL;
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| 101 | float tmin, tmax;
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[499] | 102 | if (box.ComputeMinMaxT(ray, &tmin, &tmax) && tmin < tmax)
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| 103 | pointB = ray.Extrap(tmax);
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| 104 | else
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| 105 | return 0;
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| 106 | }
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| 107 |
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| 108 | // if (objectA == NULL && objectB != NULL) {
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| 109 | if (1) {
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| 110 | // cast again to ensure that there is no objectA
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| 111 | SetupRay(ray, pointB, direction);
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| 112 | if (mKdTree->CastRay(ray)) {
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| 113 | objectA = ray.intersections[0].mObject;
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| 114 | pointA = ray.Extrap(ray.intersections[0].mT);
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[434] | 115 | }
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| 116 | }
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[499] | 117 |
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| 118 |
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[434] | 119 | VssRay *vssRay = NULL;
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[386] | 120 |
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[499] | 121 | bool validSample = (objectA != objectB);
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| 122 | if (0 && detectEmptyViewSpace) { // consider all samples valid
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| 123 | // check if the viewpoint lies on the line segment AB
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[434] | 124 | if (Distance(pointA, pointB) <
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| 125 | Distance(viewPoint, pointA) + Distance(viewPoint, pointB) - Limits::Small) {
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| 126 | validSample = false;
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[386] | 127 | }
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[434] | 128 | }
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[499] | 129 |
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[434] | 130 | if (validSample) {
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| 131 | if (objectA) {
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| 132 | vssRay = new VssRay(pointB,
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| 133 | pointA,
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| 134 | objectB,
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[499] | 135 | objectA,
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| 136 | mPass
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| 137 | );
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[434] | 138 | vssRays.push_back(vssRay);
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| 139 | hits ++;
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| 140 | }
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[499] | 141 |
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[434] | 142 | if (objectB) {
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| 143 | vssRay = new VssRay(pointA,
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| 144 | pointB,
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| 145 | objectA,
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[499] | 146 | objectB,
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| 147 | mPass
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| 148 | );
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[434] | 149 | vssRays.push_back(vssRay);
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| 150 | hits ++;
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[372] | 151 | }
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[434] | 152 | }
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[499] | 153 |
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[434] | 154 | return hits;
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[372] | 155 | }
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| 156 |
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| 157 |
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[376] | 158 | Vector3
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[382] | 159 | VssPreprocessor::GetViewpoint(AxisAlignedBox3 *viewSpaceBox)
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[372] | 160 | {
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[434] | 161 | AxisAlignedBox3 box;
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[468] | 162 |
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[434] | 163 | if (viewSpaceBox)
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| 164 | box =*viewSpaceBox;
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[468] | 165 | else
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[434] | 166 | box = mKdTree->GetBox();
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[468] | 167 |
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[434] | 168 | // shrink the box in the y direction
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| 169 | return box.GetRandomPoint();
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[372] | 170 | }
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| 171 |
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[376] | 172 | Vector3
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[427] | 173 | VssPreprocessor::GetDirection(const Vector3 &viewpoint,
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[434] | 174 | AxisAlignedBox3 *viewSpaceBox
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| 175 | )
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[372] | 176 | {
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[434] | 177 | Vector3 point;
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| 178 | if (!use2dSampling) {
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| 179 | Vector3 normal;
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[474] | 180 | int i = (int)RandomValue(0, (Real)((int)mObjects.size()-1));
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[434] | 181 | Intersectable *object = mObjects[i];
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| 182 | object->GetRandomSurfacePoint(point, normal);
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| 183 | } else {
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| 184 | AxisAlignedBox3 box;
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[468] | 185 |
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[434] | 186 | if (viewSpaceBox)
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| 187 | box =*viewSpaceBox;
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[468] | 188 | else
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[434] | 189 | box = mKdTree->GetBox();
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[468] | 190 |
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[434] | 191 | point = box.GetRandomPoint();
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| 192 | point.y = viewpoint.y;
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| 193 | }
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[468] | 194 |
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[434] | 195 | return point - viewpoint;
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[372] | 196 | }
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| 197 |
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[401] | 198 | int
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[427] | 199 | VssPreprocessor::GenerateImportanceRays(VssTree *vssTree,
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[434] | 200 | const int desiredSamples,
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| 201 | SimpleRayContainer &rays
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| 202 | )
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[401] | 203 | {
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[434] | 204 | int num;
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| 205 | if (0) {
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| 206 | float minRayContribution;
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| 207 | float maxRayContribution;
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| 208 | float avgRayContribution;
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[468] | 209 |
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[434] | 210 | vssTree->GetRayContributionStatistics(minRayContribution,
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| 211 | maxRayContribution,
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| 212 | avgRayContribution);
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[468] | 213 |
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[434] | 214 | cout<<
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| 215 | "#MIN_RAY_CONTRIB\n"<<minRayContribution<<endl<<
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| 216 | "#MAX_RAY_CONTRIB\n"<<maxRayContribution<<endl<<
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| 217 | "#AVG_RAY_CONTRIB\n"<<avgRayContribution<<endl;
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[468] | 218 |
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[434] | 219 | float p = desiredSamples/(float)(avgRayContribution*vssTree->stat.Leaves());
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| 220 | num = vssTree->GenerateRays(p, rays);
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| 221 | } else {
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| 222 | int leaves = vssTree->stat.Leaves()/2;
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| 223 | num = vssTree->GenerateRays(desiredSamples, leaves, rays);
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| 224 | }
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[468] | 225 |
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[434] | 226 | cout<<"Generated "<<num<<" rays."<<endl;
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[468] | 227 |
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[434] | 228 | return num;
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[427] | 229 | }
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[376] | 230 |
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| 231 |
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[427] | 232 | bool
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| 233 | VssPreprocessor::ExportRays(const char *filename,
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[434] | 234 | const VssRayContainer &vssRays,
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| 235 | const int number
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| 236 | )
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[427] | 237 | {
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[434] | 238 | cout<<"Exporting vss rays..."<<endl<<flush;
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[468] | 239 |
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[434] | 240 | float prob = number/(float)vssRays.size();
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[427] | 241 |
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| 242 |
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[434] | 243 | Exporter *exporter = NULL;
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| 244 | exporter = Exporter::GetExporter(filename);
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| 245 | // exporter->SetWireframe();
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| 246 | // exporter->ExportKdTree(*mKdTree);
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| 247 | exporter->SetFilled();
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| 248 | exporter->ExportScene(mSceneGraph->mRoot);
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| 249 | exporter->SetWireframe();
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[427] | 250 |
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[434] | 251 | if (mViewSpaceBox) {
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[438] | 252 | exporter->SetForcedMaterial(RgbColor(1,0,1));
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[434] | 253 | exporter->ExportBox(*mViewSpaceBox);
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| 254 | exporter->ResetForcedMaterial();
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| 255 | }
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[468] | 256 |
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[434] | 257 | VssRayContainer rays; for (int i=0; i < vssRays.size(); i++)
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| 258 | if (RandomValue(0,1) < prob)
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| 259 | rays.push_back(vssRays[i]);
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[427] | 260 |
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[434] | 261 | exporter->ExportRays(rays, RgbColor(1, 0, 0));
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[468] | 262 |
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[434] | 263 | delete exporter;
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[401] | 264 |
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[434] | 265 | cout<<"done."<<endl<<flush;
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[427] | 266 |
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[434] | 267 | return true;
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[401] | 268 | }
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| 269 |
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| 270 |
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[372] | 271 | bool
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[434] | 272 | VssPreprocessor::ExportVssTree(char *filename,
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[438] | 273 | VssTree *tree,
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| 274 | const Vector3 &dir
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| 275 | )
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[434] | 276 | {
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| 277 | Exporter *exporter = Exporter::GetExporter(filename);
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| 278 | exporter->SetFilled();
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| 279 | exporter->ExportScene(mSceneGraph->mRoot);
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[438] | 280 | // exporter->SetWireframe();
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| 281 | bool result = exporter->ExportVssTree2( *tree, dir );
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[434] | 282 | delete exporter;
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| 283 | return result;
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| 284 | }
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| 285 |
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| 286 | bool
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[427] | 287 | VssPreprocessor::ExportVssTreeLeaf(char *filename,
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[434] | 288 | VssTree *tree,
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| 289 | VssTreeLeaf *leaf)
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[427] | 290 | {
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[434] | 291 | Exporter *exporter = NULL;
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| 292 | exporter = Exporter::GetExporter(filename);
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| 293 | exporter->SetWireframe();
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| 294 | exporter->ExportKdTree(*mKdTree);
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[468] | 295 |
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[434] | 296 | if (mViewSpaceBox) {
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| 297 | exporter->SetForcedMaterial(RgbColor(1,0,0));
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| 298 | exporter->ExportBox(*mViewSpaceBox);
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[427] | 299 | exporter->ResetForcedMaterial();
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[434] | 300 | }
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[468] | 301 |
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[434] | 302 | exporter->SetForcedMaterial(RgbColor(0,0,1));
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| 303 | exporter->ExportBox(tree->GetBBox(leaf));
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| 304 | exporter->ResetForcedMaterial();
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[468] | 305 |
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[434] | 306 | VssRayContainer rays[4];
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| 307 | for (int i=0; i < leaf->rays.size(); i++) {
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| 308 | int k = leaf->rays[i].GetRayClass();
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| 309 | rays[k].push_back(leaf->rays[i].mRay);
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| 310 | }
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[468] | 311 |
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[434] | 312 | // SOURCE RAY
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| 313 | exporter->ExportRays(rays[0], RgbColor(1, 0, 0));
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| 314 | // TERMINATION RAY
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| 315 | exporter->ExportRays(rays[1], RgbColor(1, 1, 1));
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| 316 | // PASSING_RAY
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| 317 | exporter->ExportRays(rays[2], RgbColor(1, 1, 0));
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| 318 | // CONTAINED_RAY
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| 319 | exporter->ExportRays(rays[3], RgbColor(0, 0, 1));
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[427] | 320 |
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[434] | 321 | delete exporter;
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| 322 | return true;
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[427] | 323 | }
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| 324 |
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| 325 | void
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| 326 | VssPreprocessor::ExportVssTreeLeaves(VssTree *tree, const int number)
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| 327 | {
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[434] | 328 | vector<VssTreeLeaf *> leaves;
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| 329 | tree->CollectLeaves(leaves);
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[427] | 330 |
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[434] | 331 | int num = 0;
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| 332 | int i;
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| 333 | float p = number / (float)leaves.size();
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| 334 | for (i=0; i < leaves.size(); i++) {
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| 335 | if (RandomValue(0,1) < p) {
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| 336 | char filename[64];
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| 337 | sprintf(filename, "vss-leaf-%04d.x3d", num);
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| 338 | ExportVssTreeLeaf(filename, tree, leaves[i]);
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| 339 | num++;
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[427] | 340 | }
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[434] | 341 | if (num >= number)
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| 342 | break;
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| 343 | }
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[427] | 344 | }
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| 345 |
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[434] | 346 |
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| 347 | float
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| 348 | VssPreprocessor::GetAvgPvsSize(VssTree *tree,
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| 349 | const vector<AxisAlignedBox3> &viewcells
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| 350 | )
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| 351 | {
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| 352 | vector<AxisAlignedBox3>::const_iterator it, it_end = viewcells.end();
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| 353 |
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| 354 | int sum = 0;
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| 355 | for (it = viewcells.begin(); it != it_end; ++ it)
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| 356 | sum += tree->GetPvsSize(*it);
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[468] | 357 |
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[434] | 358 | return sum/(float)viewcells.size();
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| 359 | }
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| 360 |
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[427] | 361 | bool
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[372] | 362 | VssPreprocessor::ComputeVisibility()
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| 363 | {
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[468] | 364 |
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| 365 |
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[372] | 366 | long startTime = GetTime();
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[468] | 367 |
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[372] | 368 | int totalSamples = 0;
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| 369 |
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| 370 |
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[434] | 371 | AxisAlignedBox3 *box = new AxisAlignedBox3(mKdTree->GetBox());
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[382] | 372 |
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[434] | 373 | if (!useViewspacePlane) {
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[446] | 374 | float size = 0.05f;
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[434] | 375 | float s = 0.5f - size;
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| 376 | float olds = Magnitude(box->Size());
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| 377 | box->Enlarge(box->Size()*Vector3(-s));
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| 378 | Vector3 translation = Vector3(-olds*0.1f, 0, 0);
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| 379 | box->SetMin(box->Min() + translation);
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| 380 | box->SetMax(box->Max() + translation);
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| 381 | } else {
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[468] | 382 |
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[434] | 383 | // sample city like heights
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[469] | 384 | box->SetMin(1, box->Min(1) + box->Size(1)*0.2f);
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| 385 | box->SetMax(1, box->Min(1) + box->Size(1)*0.3f);
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[434] | 386 | }
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[427] | 387 |
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[434] | 388 | if (use2dSampling)
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| 389 | box->SetMax(1, box->Min(1));
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[468] | 390 |
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[501] | 391 | if (mUseViewSpaceBox)
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[487] | 392 | {
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[434] | 393 | mViewSpaceBox = box;
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[487] | 394 | mViewCellsManager->SetViewSpaceBox(*box);
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| 395 | }
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[434] | 396 | else
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[487] | 397 | {
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[434] | 398 | mViewSpaceBox = NULL;
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[487] | 399 | mViewCellsManager->SetViewSpaceBox(mKdTree->GetBox());
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| 400 | }
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[434] | 401 | VssTree *vssTree = NULL;
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[401] | 402 |
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[490] | 403 | mSceneGraph->CollectObjects(&mObjects);
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[468] | 404 |
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[490] | 405 | long initialTime = GetTime();
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[468] | 406 |
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[490] | 407 | if (mLoadInitialSamples)
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| 408 | {
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| 409 | cout << "Loading samples from file ... ";
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| 410 | LoadSamples(mVssRays, mObjects);
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| 411 | cout << "finished\n" << endl;
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| 412 | totalSamples = (int)mVssRays.size();
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| 413 | }
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| 414 | else
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| 415 | {
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| 416 | while (totalSamples < mInitialSamples) {
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| 417 | int passContributingSamples = 0;
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| 418 | int passSampleContributions = 0;
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| 419 | int passSamples = 0;
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[468] | 420 |
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[490] | 421 | int index = 0;
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[468] | 422 |
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[490] | 423 | int sampleContributions;
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[468] | 424 |
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[490] | 425 | int s = Min(mSamplesPerPass, mInitialSamples);
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| 426 | for (int k=0; k < s; k++) {
|
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| 427 | // changed by matt
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| 428 | //Vector3 viewpoint = GetViewpoint(mViewSpaceBox);
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| 429 | Vector3 viewpoint;
|
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| 430 | mViewCellsManager->GetViewPoint(viewpoint);
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| 431 | Vector3 direction = GetDirection(viewpoint, mViewSpaceBox);
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| 432 |
|
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| 433 | sampleContributions = CastRay(viewpoint, direction, mVssRays);
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[468] | 434 |
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[490] | 435 | if (sampleContributions) {
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| 436 | passContributingSamples ++;
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| 437 | passSampleContributions += sampleContributions;
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| 438 | }
|
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| 439 | passSamples++;
|
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| 440 | totalSamples++;
|
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| 441 | }
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[468] | 442 |
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[490] | 443 | mPass++;
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| 444 | int pvsSize = 0;
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| 445 | float avgRayContrib = (passContributingSamples > 0) ?
|
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| 446 | passSampleContributions/(float)passContributingSamples : 0;
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[468] | 447 |
|
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[490] | 448 | cout << "#Pass " << mPass << " : t = " << TimeDiff(startTime, GetTime())*1e-3 << "s" << endl;
|
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| 449 | cout << "#TotalSamples=" << totalSamples/1000
|
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| 450 | << "k #SampleContributions=" << passSampleContributions << " ("
|
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| 451 | << 100*passContributingSamples/(float)passSamples<<"%)" << " avgPVS="
|
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| 452 | << pvsSize/(float)mObjects.size() << endl
|
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| 453 | << "avg ray contrib=" << avgRayContrib << endl;
|
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[468] | 454 |
|
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[490] | 455 | mStats <<
|
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| 456 | "#Pass\n" <<mPass<<endl<<
|
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| 457 | "#Time\n" << TimeDiff(startTime, GetTime())*1e-3 << endl<<
|
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| 458 | "#TotalSamples\n" << totalSamples<< endl<<
|
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| 459 | "#SampleContributions\n" << passSampleContributions << endl <<
|
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| 460 | "#PContributingSamples\n"<<100*passContributingSamples/(float)passSamples<<endl <<
|
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| 461 | "#AvgPVS\n"<< pvsSize/(float)mObjects.size() << endl <<
|
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| 462 | "#AvgRayContrib\n" << avgRayContrib << endl;
|
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| 463 | }
|
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| 464 |
|
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| 465 | cout << "#totalPvsSize=" << mKdTree->CollectLeafPvs() << endl;
|
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| 466 | }
|
---|
| 467 |
|
---|
| 468 | cout << "#totalRayStackSize=" << (int)mVssRays.size() << endl << flush;
|
---|
| 469 | Debug << (int)mVssRays.size() << " rays generated in "
|
---|
| 470 | << TimeDiff(initialTime, GetTime()) * 1e-3 << " seconds" << endl;
|
---|
[401] | 471 |
|
---|
[490] | 472 | if (mStoreInitialSamples)
|
---|
| 473 | {
|
---|
| 474 | cout << "Writing " << (int)mVssRays.size() << " samples to file ... ";
|
---|
| 475 | WriteSamples(mVssRays);
|
---|
| 476 | cout << "finished\n" << endl;
|
---|
[491] | 477 |
|
---|
| 478 | /*VssRayContainer dummyRays;
|
---|
| 479 | LoadSamples(dummyRays, mObjects);
|
---|
| 480 | Debug << "rays " << (int)mVssRays.size() << " " << dummyRays.size() << endl;
|
---|
| 481 |
|
---|
| 482 | for (int i = 0; i < (int)mVssRays.size(); ++ i)
|
---|
| 483 | {
|
---|
| 484 | Debug << mVssRays[i]->GetOrigin() << " " << mVssRays[i]->GetTermination() << " " << mVssRays[i]->mOriginObject << " " << mVssRays[i]->mTerminationObject << endl;
|
---|
| 485 | Debug << dummyRays[i]->GetOrigin() << " " << dummyRays[i]->GetTermination() << " " << dummyRays[i]->mOriginObject << " " << dummyRays[i]->mTerminationObject << endl << endl;
|
---|
| 486 | }*/
|
---|
[434] | 487 | }
|
---|
[468] | 488 |
|
---|
[452] | 489 | //int numExportRays = 10000;
|
---|
| 490 | int numExportRays = 0;
|
---|
[372] | 491 |
|
---|
[434] | 492 | if (numExportRays) {
|
---|
| 493 | char filename[64];
|
---|
| 494 | sprintf(filename, "vss-rays-initial.x3d");
|
---|
| 495 | ExportRays(filename, mVssRays, numExportRays);
|
---|
| 496 | }
|
---|
[468] | 497 |
|
---|
[448] | 498 | // construct view cells
|
---|
[487] | 499 | mViewCellsManager->Construct(mObjects, mVssRays);
|
---|
[429] | 500 |
|
---|
[434] | 501 | vssTree = new VssTree;
|
---|
| 502 | // viewcells = Construct(mVssRays);
|
---|
[468] | 503 |
|
---|
[434] | 504 | vssTree->Construct(mVssRays, mViewSpaceBox);
|
---|
| 505 | cout<<"VssTree root PVS size = "<<vssTree->GetRootPvsSize()<<endl;
|
---|
[468] | 506 |
|
---|
[465] | 507 | if (0)
|
---|
| 508 | {
|
---|
| 509 | ExportVssTree("vss-tree-100.x3d", vssTree, Vector3(1,0,0));
|
---|
| 510 | ExportVssTree("vss-tree-001.x3d", vssTree, Vector3(0,0,1));
|
---|
| 511 | ExportVssTree("vss-tree-101.x3d", vssTree, Vector3(1,0,1));
|
---|
| 512 | ExportVssTree("vss-tree-101m.x3d", vssTree, Vector3(-1,0,-1));
|
---|
| 513 | ExportVssTreeLeaves(vssTree, 10);
|
---|
| 514 | }
|
---|
[430] | 515 |
|
---|
[434] | 516 | // viewcells->UpdatePVS(newVssRays);
|
---|
| 517 | // get viewcells as kd tree boxes
|
---|
| 518 | vector<AxisAlignedBox3> kdViewcells;
|
---|
| 519 | if (0) {
|
---|
| 520 | vector<KdLeaf *> leaves;
|
---|
| 521 | mKdTree->CollectLeaves(leaves);
|
---|
| 522 | vector<KdLeaf *>::const_iterator it;
|
---|
| 523 | int targetLeaves = 50;
|
---|
| 524 | float prob = targetLeaves/(float)leaves.size();
|
---|
| 525 | for (it = leaves.begin(); it != leaves.end(); ++it)
|
---|
| 526 | if (RandomValue(0.0f,1.0f) < prob)
|
---|
| 527 | kdViewcells.push_back(mKdTree->GetBox(*it));
|
---|
[468] | 528 |
|
---|
[434] | 529 | float avgPvs = GetAvgPvsSize(vssTree, kdViewcells);
|
---|
| 530 | cout<<"Initial average PVS size = "<<avgPvs<<endl;
|
---|
| 531 | }
|
---|
| 532 |
|
---|
[468] | 533 |
|
---|
[434] | 534 | int samples = 0;
|
---|
| 535 | int pass = 0;
|
---|
[448] | 536 |
|
---|
[451] | 537 | /// Rays used for post processing and visualizations
|
---|
[448] | 538 | RayContainer storedRays;
|
---|
| 539 | // cast view cell samples
|
---|
[434] | 540 | while (1) {
|
---|
| 541 | int num = mVssSamplesPerPass;
|
---|
| 542 | SimpleRayContainer rays;
|
---|
| 543 | VssRayContainer vssRays;
|
---|
[468] | 544 |
|
---|
[434] | 545 | if (!mUseImportanceSampling) {
|
---|
| 546 | for (int j=0; j < num; j++) {
|
---|
[487] | 547 | // changed by matt
|
---|
| 548 | //Vector3 viewpoint = GetViewpoint(mViewSpaceBox);
|
---|
| 549 | Vector3 viewpoint;
|
---|
| 550 | mViewCellsManager->GetViewPoint(viewpoint);
|
---|
[434] | 551 | Vector3 direction = GetDirection(viewpoint, mViewSpaceBox);
|
---|
| 552 | rays.push_back(SimpleRay(viewpoint, direction));
|
---|
| 553 | }
|
---|
| 554 | } else {
|
---|
| 555 | num = GenerateImportanceRays(vssTree, num, rays);
|
---|
| 556 | }
|
---|
[468] | 557 |
|
---|
[434] | 558 | for (int i=0; i < rays.size(); i++)
|
---|
| 559 | CastRay(rays[i].mOrigin, rays[i].mDirection, vssRays);
|
---|
[468] | 560 |
|
---|
[434] | 561 | vssTree->AddRays(vssRays);
|
---|
[468] | 562 |
|
---|
[434] | 563 | if (0) {
|
---|
| 564 | int subdivided = vssTree->UpdateSubdivision();
|
---|
| 565 | cout<<"subdivided leafs = "<<subdivided<<endl;
|
---|
| 566 | }
|
---|
[427] | 567 |
|
---|
[434] | 568 | float avgPvs = GetAvgPvsSize(vssTree, kdViewcells);
|
---|
| 569 | cout<<"Average PVS size = "<<avgPvs<<endl;
|
---|
[430] | 570 |
|
---|
[434] | 571 | if (numExportRays) {
|
---|
| 572 | char filename[64];
|
---|
| 573 | if (mUseImportanceSampling)
|
---|
| 574 | sprintf(filename, "vss-rays-i%04d.x3d", pass);
|
---|
| 575 | else
|
---|
| 576 | sprintf(filename, "vss-rays-%04d.x3d", pass);
|
---|
[468] | 577 |
|
---|
[434] | 578 | ExportRays(filename, vssRays, numExportRays);
|
---|
[401] | 579 | }
|
---|
[386] | 580 |
|
---|
[448] | 581 | //-- prepare traversal rays for view cell intersections
|
---|
| 582 | /// compute view cell contribution of rays
|
---|
[466] | 583 | mViewCellsManager->ComputeSampleContributions(vssRays);
|
---|
[448] | 584 |
|
---|
[434] | 585 | samples+=num;
|
---|
| 586 | float pvs = vssTree->GetAvgPvsSize();
|
---|
| 587 | cout<<"*****************************\n";
|
---|
| 588 | cout<<samples<<" avgPVS ="<<pvs<<endl;
|
---|
| 589 | cout<<"VssTree root PVS size = "<<vssTree->GetRootPvsSize()<<endl;
|
---|
| 590 | cout<<"*****************************\n";
|
---|
| 591 | if (samples >= mVssSamples)
|
---|
| 592 | break;
|
---|
| 593 | pass++;
|
---|
| 594 | }
|
---|
[448] | 595 |
|
---|
[468] | 596 |
|
---|
[466] | 597 | {
|
---|
| 598 | VssRayContainer storedRays;
|
---|
| 599 | vssTree->CollectRays(storedRays, Max(
|
---|
| 600 | mViewCellsManager->GetPostProcessSamples(),
|
---|
| 601 | mViewCellsManager->GetVisualizationSamples()));
|
---|
[468] | 602 |
|
---|
[490] | 603 | //-- post process view cells
|
---|
[466] | 604 | mViewCellsManager->PostProcess(mObjects, storedRays);
|
---|
[468] | 605 |
|
---|
[466] | 606 | //-- several visualizations and statistics
|
---|
[485] | 607 | Debug << "\nview cells after post processing: " << endl;
|
---|
[466] | 608 | mViewCellsManager->PrintStatistics(Debug);
|
---|
[452] | 609 |
|
---|
[466] | 610 | mViewCellsManager->Visualize(mObjects, storedRays);
|
---|
| 611 | }
|
---|
| 612 |
|
---|
[452] | 613 | //-- render simulation after merge
|
---|
| 614 | cout << "\nevaluating bsp view cells render time after merge ... ";
|
---|
[466] | 615 |
|
---|
[468] | 616 | mRenderSimulator->RenderScene();
|
---|
[474] | 617 |
|
---|
[468] | 618 | SimulationStatistics ss;
|
---|
| 619 | mRenderSimulator->GetStatistics(ss);
|
---|
[474] | 620 |
|
---|
[452] | 621 | cout << " finished" << endl;
|
---|
| 622 | cout << ss << endl;
|
---|
| 623 | Debug << ss << endl;
|
---|
[468] | 624 |
|
---|
[434] | 625 | delete vssTree;
|
---|
[475] | 626 |
|
---|
[434] | 627 | return true;
|
---|
[466] | 628 | }
|
---|