[372] | 1 | #include "SceneGraph.h"
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| 2 | #include "KdTree.h"
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| 3 | #include "VssPreprocessor.h"
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| 4 | #include "X3dExporter.h"
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| 5 | #include "Environment.h"
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| 6 | #include "MutualVisibility.h"
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| 7 | #include "Polygon3.h"
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| 8 | #include "ViewCell.h"
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[376] | 9 | #include "VssRay.h"
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[382] | 10 | #include "VssTree.h"
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[439] | 11 | #include "ViewCellsManager.h"
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[452] | 12 | #include "RenderSimulator.h"
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[531] | 13 | #include "Beam.h"
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| 14 | #include "GlRenderer.h"
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[372] | 15 |
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[427] | 16 | bool use2dSampling = false;
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[534] | 17 | bool useViewspacePlane = false;
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[427] | 18 |
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[372] | 19 | VssPreprocessor::VssPreprocessor():
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[434] | 20 | mPass(0),
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| 21 | mVssRays()
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[372] | 22 | {
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| 23 | // this should increase coherence of the samples
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[376] | 24 | environment->GetIntValue("VssPreprocessor.samplesPerPass", mSamplesPerPass);
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[403] | 25 | environment->GetIntValue("VssPreprocessor.initialSamples", mInitialSamples);
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| 26 | environment->GetIntValue("VssPreprocessor.vssSamples", mVssSamples);
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[427] | 27 | environment->GetIntValue("VssPreprocessor.vssSamplesPerPass", mVssSamplesPerPass);
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[429] | 28 | environment->GetBoolValue("VssPreprocessor.useImportanceSampling", mUseImportanceSampling);
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[517] | 29 | environment->GetBoolValue("ViewCells.delayedConstruction", mDelayedViewCellsConstruction);
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[468] | 30 |
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[490] | 31 | environment->GetBoolValue("VssPreprocessor.loadInitialSamples", mLoadInitialSamples);
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| 32 | environment->GetBoolValue("VssPreprocessor.storeInitialSamples", mStoreInitialSamples);
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[501] | 33 | environment->GetBoolValue("VssPreprocessor.useViewSpaceBox", mUseViewSpaceBox);
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[532] | 34 | environment->GetBoolValue("VssPreprocessor.testBeamSampling", mTestBeamSampling);
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| 35 |
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[508] | 36 | useViewspacePlane = mUseViewSpaceBox; //hack
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[490] | 37 |
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[372] | 38 | mStats.open("stats.log");
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| 39 | }
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| 40 |
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| 41 | VssPreprocessor::~VssPreprocessor()
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| 42 | {
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[434] | 43 | CLEAR_CONTAINER(mVssRays);
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[372] | 44 | }
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| 45 |
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| 46 | void
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[468] | 47 | VssPreprocessor::SetupRay(Ray &ray,
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| 48 | const Vector3 &point,
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[434] | 49 | const Vector3 &direction
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| 50 | )
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[372] | 51 | {
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[466] | 52 | ray.Clear();
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[434] | 53 | // do not store anything else then intersections at the ray
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[374] | 54 | ray.Init(point, direction, Ray::LOCAL_RAY);
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[372] | 55 | }
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| 56 |
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[386] | 57 | int
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[376] | 58 | VssPreprocessor::CastRay(
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[434] | 59 | Vector3 &viewPoint,
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| 60 | Vector3 &direction,
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| 61 | VssRayContainer &vssRays
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| 62 | )
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[372] | 63 | {
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[499] | 64 |
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| 65 | int hits = 0;
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[434] | 66 | static Ray ray;
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| 67 | AxisAlignedBox3 box = mKdTree->GetBox();
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[427] | 68 |
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[434] | 69 | AxisAlignedBox3 sbox = box;
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| 70 | sbox.Enlarge(Vector3(-Limits::Small));
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| 71 | if (!sbox.IsInside(viewPoint))
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| 72 | return 0;
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[499] | 73 |
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[434] | 74 | SetupRay(ray, viewPoint, direction);
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| 75 | // cast ray to KD tree to find intersection with other objects
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| 76 | Intersectable *objectA, *objectB;
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| 77 | Vector3 pointA, pointB;
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| 78 | float bsize = Magnitude(box.Size());
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[499] | 79 |
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[534] | 80 |
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| 81 | if (!mDetectEmptyViewSpace)
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| 82 | ray.mFlags &= ~Ray::CULL_BACKFACES;
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[499] | 83 |
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[434] | 84 | if (mKdTree->CastRay(ray)) {
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| 85 | objectA = ray.intersections[0].mObject;
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| 86 | pointA = ray.Extrap(ray.intersections[0].mT);
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| 87 | } else {
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| 88 | objectA = NULL;
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| 89 | // compute intersection with the scene bounding box
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| 90 | float tmin, tmax;
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[499] | 91 | if (box.ComputeMinMaxT(ray, &tmin, &tmax) && tmin < tmax)
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| 92 | pointA = ray.Extrap(tmax);
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| 93 | else
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| 94 | return 0;
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[434] | 95 | }
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[386] | 96 |
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[499] | 97 |
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[534] | 98 | if (mDetectEmptyViewSpace) {
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[434] | 99 | SetupRay(ray, pointA, -direction);
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| 100 | } else
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| 101 | SetupRay(ray, viewPoint, -direction);
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[534] | 102 |
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| 103 | if (!mDetectEmptyViewSpace)
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| 104 | ray.mFlags &= ~Ray::CULL_BACKFACES;
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| 105 |
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[434] | 106 | if (mKdTree->CastRay(ray)) {
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| 107 | objectB = ray.intersections[0].mObject;
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| 108 | pointB = ray.Extrap(ray.intersections[0].mT);
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| 109 | } else {
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| 110 | objectB = NULL;
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| 111 | float tmin, tmax;
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[499] | 112 | if (box.ComputeMinMaxT(ray, &tmin, &tmax) && tmin < tmax)
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| 113 | pointB = ray.Extrap(tmax);
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| 114 | else
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| 115 | return 0;
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| 116 | }
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[534] | 117 |
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[499] | 118 | // if (objectA == NULL && objectB != NULL) {
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[534] | 119 | if (mDetectEmptyViewSpace) {
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[499] | 120 | // cast again to ensure that there is no objectA
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| 121 | SetupRay(ray, pointB, direction);
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| 122 | if (mKdTree->CastRay(ray)) {
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| 123 | objectA = ray.intersections[0].mObject;
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| 124 | pointA = ray.Extrap(ray.intersections[0].mT);
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[434] | 125 | }
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| 126 | }
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[534] | 127 |
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[499] | 128 |
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[434] | 129 | VssRay *vssRay = NULL;
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[386] | 130 |
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[499] | 131 | bool validSample = (objectA != objectB);
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[534] | 132 | if (0 && mDetectEmptyViewSpace) { // consider all samples valid
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[499] | 133 | // check if the viewpoint lies on the line segment AB
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[434] | 134 | if (Distance(pointA, pointB) <
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| 135 | Distance(viewPoint, pointA) + Distance(viewPoint, pointB) - Limits::Small) {
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| 136 | validSample = false;
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[386] | 137 | }
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[434] | 138 | }
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[499] | 139 |
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[434] | 140 | if (validSample) {
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| 141 | if (objectA) {
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| 142 | vssRay = new VssRay(pointB,
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| 143 | pointA,
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| 144 | objectB,
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[499] | 145 | objectA,
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| 146 | mPass
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| 147 | );
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[434] | 148 | vssRays.push_back(vssRay);
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| 149 | hits ++;
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| 150 | }
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[499] | 151 |
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[434] | 152 | if (objectB) {
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| 153 | vssRay = new VssRay(pointA,
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| 154 | pointB,
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| 155 | objectA,
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[499] | 156 | objectB,
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| 157 | mPass
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| 158 | );
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[434] | 159 | vssRays.push_back(vssRay);
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| 160 | hits ++;
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[372] | 161 | }
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[434] | 162 | }
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[499] | 163 |
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[434] | 164 | return hits;
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[372] | 165 | }
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| 166 |
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| 167 |
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[376] | 168 | Vector3
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[382] | 169 | VssPreprocessor::GetViewpoint(AxisAlignedBox3 *viewSpaceBox)
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[372] | 170 | {
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[434] | 171 | AxisAlignedBox3 box;
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[468] | 172 |
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[434] | 173 | if (viewSpaceBox)
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| 174 | box =*viewSpaceBox;
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[468] | 175 | else
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[434] | 176 | box = mKdTree->GetBox();
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[468] | 177 |
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[434] | 178 | // shrink the box in the y direction
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| 179 | return box.GetRandomPoint();
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[372] | 180 | }
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| 181 |
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[376] | 182 | Vector3
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[427] | 183 | VssPreprocessor::GetDirection(const Vector3 &viewpoint,
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[434] | 184 | AxisAlignedBox3 *viewSpaceBox
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| 185 | )
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[372] | 186 | {
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[434] | 187 | Vector3 point;
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| 188 | if (!use2dSampling) {
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[534] | 189 | if (0) {
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| 190 | Vector3 normal;
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| 191 | int i = Random((int)mObjects.size());
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| 192 | Intersectable *object = mObjects[i];
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| 193 | object->GetRandomSurfacePoint(point, normal);
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| 194 | } else
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| 195 | point = mKdTree->GetBox().GetRandomPoint();
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| 196 | // point = viewpoint + UniformRandomVector();
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| 197 |
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[434] | 198 | } else {
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| 199 | AxisAlignedBox3 box;
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[468] | 200 |
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[434] | 201 | if (viewSpaceBox)
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| 202 | box =*viewSpaceBox;
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[468] | 203 | else
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[434] | 204 | box = mKdTree->GetBox();
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[468] | 205 |
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[434] | 206 | point = box.GetRandomPoint();
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| 207 | point.y = viewpoint.y;
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| 208 | }
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[468] | 209 |
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[434] | 210 | return point - viewpoint;
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[372] | 211 | }
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| 212 |
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[401] | 213 | int
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[427] | 214 | VssPreprocessor::GenerateImportanceRays(VssTree *vssTree,
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[434] | 215 | const int desiredSamples,
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| 216 | SimpleRayContainer &rays
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| 217 | )
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[401] | 218 | {
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[434] | 219 | int num;
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| 220 | if (0) {
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| 221 | float minRayContribution;
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| 222 | float maxRayContribution;
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| 223 | float avgRayContribution;
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[468] | 224 |
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[434] | 225 | vssTree->GetRayContributionStatistics(minRayContribution,
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| 226 | maxRayContribution,
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| 227 | avgRayContribution);
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[468] | 228 |
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[434] | 229 | cout<<
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| 230 | "#MIN_RAY_CONTRIB\n"<<minRayContribution<<endl<<
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| 231 | "#MAX_RAY_CONTRIB\n"<<maxRayContribution<<endl<<
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| 232 | "#AVG_RAY_CONTRIB\n"<<avgRayContribution<<endl;
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[468] | 233 |
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[434] | 234 | float p = desiredSamples/(float)(avgRayContribution*vssTree->stat.Leaves());
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| 235 | num = vssTree->GenerateRays(p, rays);
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| 236 | } else {
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[534] | 237 | int leaves = vssTree->stat.Leaves();
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[434] | 238 | num = vssTree->GenerateRays(desiredSamples, leaves, rays);
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| 239 | }
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[468] | 240 |
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[434] | 241 | cout<<"Generated "<<num<<" rays."<<endl;
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[468] | 242 |
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[434] | 243 | return num;
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[427] | 244 | }
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[376] | 245 |
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| 246 |
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[427] | 247 | bool
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| 248 | VssPreprocessor::ExportRays(const char *filename,
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[434] | 249 | const VssRayContainer &vssRays,
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| 250 | const int number
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| 251 | )
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[427] | 252 | {
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[434] | 253 | cout<<"Exporting vss rays..."<<endl<<flush;
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[468] | 254 |
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[434] | 255 | Exporter *exporter = NULL;
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| 256 | exporter = Exporter::GetExporter(filename);
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| 257 | // exporter->SetWireframe();
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| 258 | // exporter->ExportKdTree(*mKdTree);
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| 259 | exporter->SetFilled();
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| 260 | exporter->ExportScene(mSceneGraph->mRoot);
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| 261 | exporter->SetWireframe();
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[427] | 262 |
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[434] | 263 | if (mViewSpaceBox) {
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[438] | 264 | exporter->SetForcedMaterial(RgbColor(1,0,1));
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[434] | 265 | exporter->ExportBox(*mViewSpaceBox);
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| 266 | exporter->ResetForcedMaterial();
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| 267 | }
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[468] | 268 |
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[534] | 269 | VssRayContainer rays;
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| 270 | vssRays.SelectRays(number, rays);
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| 271 |
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[434] | 272 | exporter->ExportRays(rays, RgbColor(1, 0, 0));
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[468] | 273 |
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[434] | 274 | delete exporter;
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[401] | 275 |
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[434] | 276 | cout<<"done."<<endl<<flush;
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[427] | 277 |
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[434] | 278 | return true;
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[401] | 279 | }
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| 280 |
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| 281 |
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[372] | 282 | bool
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[434] | 283 | VssPreprocessor::ExportVssTree(char *filename,
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[438] | 284 | VssTree *tree,
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| 285 | const Vector3 &dir
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| 286 | )
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[434] | 287 | {
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| 288 | Exporter *exporter = Exporter::GetExporter(filename);
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| 289 | exporter->SetFilled();
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| 290 | exporter->ExportScene(mSceneGraph->mRoot);
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[438] | 291 | // exporter->SetWireframe();
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| 292 | bool result = exporter->ExportVssTree2( *tree, dir );
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[434] | 293 | delete exporter;
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| 294 | return result;
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| 295 | }
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| 296 |
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| 297 | bool
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[427] | 298 | VssPreprocessor::ExportVssTreeLeaf(char *filename,
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[434] | 299 | VssTree *tree,
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| 300 | VssTreeLeaf *leaf)
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[427] | 301 | {
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[434] | 302 | Exporter *exporter = NULL;
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| 303 | exporter = Exporter::GetExporter(filename);
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| 304 | exporter->SetWireframe();
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| 305 | exporter->ExportKdTree(*mKdTree);
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[468] | 306 |
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[434] | 307 | if (mViewSpaceBox) {
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| 308 | exporter->SetForcedMaterial(RgbColor(1,0,0));
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| 309 | exporter->ExportBox(*mViewSpaceBox);
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[427] | 310 | exporter->ResetForcedMaterial();
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[434] | 311 | }
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[468] | 312 |
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[434] | 313 | exporter->SetForcedMaterial(RgbColor(0,0,1));
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| 314 | exporter->ExportBox(tree->GetBBox(leaf));
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| 315 | exporter->ResetForcedMaterial();
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[468] | 316 |
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[434] | 317 | VssRayContainer rays[4];
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| 318 | for (int i=0; i < leaf->rays.size(); i++) {
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| 319 | int k = leaf->rays[i].GetRayClass();
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| 320 | rays[k].push_back(leaf->rays[i].mRay);
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| 321 | }
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[468] | 322 |
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[434] | 323 | // SOURCE RAY
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| 324 | exporter->ExportRays(rays[0], RgbColor(1, 0, 0));
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| 325 | // TERMINATION RAY
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| 326 | exporter->ExportRays(rays[1], RgbColor(1, 1, 1));
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| 327 | // PASSING_RAY
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| 328 | exporter->ExportRays(rays[2], RgbColor(1, 1, 0));
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| 329 | // CONTAINED_RAY
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| 330 | exporter->ExportRays(rays[3], RgbColor(0, 0, 1));
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[427] | 331 |
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[434] | 332 | delete exporter;
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| 333 | return true;
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[427] | 334 | }
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| 335 |
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| 336 | void
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| 337 | VssPreprocessor::ExportVssTreeLeaves(VssTree *tree, const int number)
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| 338 | {
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[434] | 339 | vector<VssTreeLeaf *> leaves;
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| 340 | tree->CollectLeaves(leaves);
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[427] | 341 |
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[434] | 342 | int num = 0;
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| 343 | int i;
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| 344 | float p = number / (float)leaves.size();
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| 345 | for (i=0; i < leaves.size(); i++) {
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| 346 | if (RandomValue(0,1) < p) {
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| 347 | char filename[64];
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| 348 | sprintf(filename, "vss-leaf-%04d.x3d", num);
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| 349 | ExportVssTreeLeaf(filename, tree, leaves[i]);
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| 350 | num++;
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[427] | 351 | }
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[434] | 352 | if (num >= number)
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| 353 | break;
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| 354 | }
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[427] | 355 | }
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| 356 |
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[434] | 357 |
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[532] | 358 | void VssPreprocessor::TestBeamCasting(VssTree *tree, ViewCellsManager *vm)
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[530] | 359 | {
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[531] | 360 | vector<VssTreeLeaf *> leaves;
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| 361 | tree->CollectLeaves(leaves);
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[530] | 362 |
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| 363 | for (int i = 0; i < 10; ++i)
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| 364 | {
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[531] | 365 | const int index = (int)RandomValue(0, (Real)((int)leaves.size() - 1));
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| 366 | VssTreeLeaf *leaf = leaves[index];
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[530] | 367 |
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| 368 | Beam beam;
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[531] | 369 | AxisAlignedBox3 dirBox =tree->GetDirBBox(leaf);
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| 370 | AxisAlignedBox3 box = tree->GetBBox(leaf);
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[532] | 371 |
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[530] | 372 | beam.Construct(dirBox, box);
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[532] | 373 |
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| 374 | // collect kd leaves and view cells
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| 375 | mKdTree->CastBeam(beam);
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| 376 | vm->CastBeam(beam);
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| 377 |
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| 378 | Debug << "found " << beam.mViewCells.size() << " view cells and "
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| 379 | << beam.mKdNodes.size() << " kd nodes" << endl;
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| 380 |
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[530] | 381 | Intersectable *sourceObj = mObjects[5];
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| 382 | BeamSampleStatistics stats;
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[531] | 383 | renderer->SampleBeamContributions(sourceObj, |
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| 384 | beam, |
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| 385 | 10000, |
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| 386 | stats);
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[530] | 387 |
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[532] | 388 | Debug << "beam statistics: " << stats << endl << endl;
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[530] | 389 | }
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| 390 |
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| 391 | }
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| 392 |
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[434] | 393 | float
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| 394 | VssPreprocessor::GetAvgPvsSize(VssTree *tree,
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| 395 | const vector<AxisAlignedBox3> &viewcells
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| 396 | )
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| 397 | {
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| 398 | vector<AxisAlignedBox3>::const_iterator it, it_end = viewcells.end();
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| 399 |
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| 400 | int sum = 0;
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| 401 | for (it = viewcells.begin(); it != it_end; ++ it)
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| 402 | sum += tree->GetPvsSize(*it);
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[468] | 403 |
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[434] | 404 | return sum/(float)viewcells.size();
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| 405 | }
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| 406 |
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[427] | 407 | bool
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[372] | 408 | VssPreprocessor::ComputeVisibility()
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| 409 | {
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[468] | 410 |
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| 411 |
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[372] | 412 | long startTime = GetTime();
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[468] | 413 |
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[372] | 414 | int totalSamples = 0;
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| 415 |
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| 416 |
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[434] | 417 | AxisAlignedBox3 *box = new AxisAlignedBox3(mKdTree->GetBox());
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[534] | 418 |
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[434] | 419 | if (!useViewspacePlane) {
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[446] | 420 | float size = 0.05f;
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[434] | 421 | float s = 0.5f - size;
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| 422 | float olds = Magnitude(box->Size());
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| 423 | box->Enlarge(box->Size()*Vector3(-s));
|
---|
| 424 | Vector3 translation = Vector3(-olds*0.1f, 0, 0);
|
---|
| 425 | box->SetMin(box->Min() + translation);
|
---|
| 426 | box->SetMax(box->Max() + translation);
|
---|
| 427 | } else {
|
---|
[468] | 428 |
|
---|
[434] | 429 | // sample city like heights
|
---|
[469] | 430 | box->SetMin(1, box->Min(1) + box->Size(1)*0.2f);
|
---|
| 431 | box->SetMax(1, box->Min(1) + box->Size(1)*0.3f);
|
---|
[434] | 432 | }
|
---|
[427] | 433 |
|
---|
[434] | 434 | if (use2dSampling)
|
---|
| 435 | box->SetMax(1, box->Min(1));
|
---|
[468] | 436 |
|
---|
[534] | 437 | cout<<"mUseViewSpaceBox="<<mUseViewSpaceBox<<endl;
|
---|
[501] | 438 | if (mUseViewSpaceBox)
|
---|
[487] | 439 | {
|
---|
[434] | 440 | mViewSpaceBox = box;
|
---|
[487] | 441 | mViewCellsManager->SetViewSpaceBox(*box);
|
---|
| 442 | }
|
---|
[434] | 443 | else
|
---|
[487] | 444 | {
|
---|
[434] | 445 | mViewSpaceBox = NULL;
|
---|
[487] | 446 | mViewCellsManager->SetViewSpaceBox(mKdTree->GetBox());
|
---|
| 447 | }
|
---|
[534] | 448 |
|
---|
[518] | 449 | //-- load view cells from file if requested
|
---|
| 450 | if (mLoadViewCells)
|
---|
[527] | 451 | {
|
---|
| 452 | // load now because otherwise bounding box not correct
|
---|
[520] | 453 | mViewCellsManager->LoadViewCells(mViewCellsFilename, &mObjects);
|
---|
[518] | 454 | }
|
---|
| 455 |
|
---|
| 456 |
|
---|
[434] | 457 | VssTree *vssTree = NULL;
|
---|
[401] | 458 |
|
---|
[490] | 459 | mSceneGraph->CollectObjects(&mObjects);
|
---|
[468] | 460 |
|
---|
[490] | 461 | long initialTime = GetTime();
|
---|
[468] | 462 |
|
---|
[490] | 463 | if (mLoadInitialSamples)
|
---|
| 464 | {
|
---|
| 465 | cout << "Loading samples from file ... ";
|
---|
| 466 | LoadSamples(mVssRays, mObjects);
|
---|
| 467 | cout << "finished\n" << endl;
|
---|
| 468 | totalSamples = (int)mVssRays.size();
|
---|
| 469 | }
|
---|
| 470 | else
|
---|
| 471 | {
|
---|
[534] | 472 |
|
---|
| 473 | while (totalSamples < mInitialSamples) {
|
---|
[490] | 474 | int passContributingSamples = 0;
|
---|
| 475 | int passSampleContributions = 0;
|
---|
| 476 | int passSamples = 0;
|
---|
[468] | 477 |
|
---|
[490] | 478 | int index = 0;
|
---|
[468] | 479 |
|
---|
[490] | 480 | int sampleContributions;
|
---|
[468] | 481 |
|
---|
[490] | 482 | int s = Min(mSamplesPerPass, mInitialSamples);
|
---|
| 483 | for (int k=0; k < s; k++) {
|
---|
| 484 | // changed by matt
|
---|
| 485 | Vector3 viewpoint;
|
---|
[534] | 486 | // viewpoint = GetViewpoint(mViewSpaceBox);
|
---|
[490] | 487 | mViewCellsManager->GetViewPoint(viewpoint);
|
---|
| 488 | Vector3 direction = GetDirection(viewpoint, mViewSpaceBox);
|
---|
[534] | 489 |
|
---|
[490] | 490 | sampleContributions = CastRay(viewpoint, direction, mVssRays);
|
---|
[468] | 491 |
|
---|
[490] | 492 | if (sampleContributions) {
|
---|
| 493 | passContributingSamples ++;
|
---|
| 494 | passSampleContributions += sampleContributions;
|
---|
| 495 | }
|
---|
| 496 | passSamples++;
|
---|
| 497 | totalSamples++;
|
---|
| 498 | }
|
---|
[468] | 499 |
|
---|
[490] | 500 | mPass++;
|
---|
| 501 | int pvsSize = 0;
|
---|
| 502 | float avgRayContrib = (passContributingSamples > 0) ?
|
---|
| 503 | passSampleContributions/(float)passContributingSamples : 0;
|
---|
[468] | 504 |
|
---|
[490] | 505 | cout << "#Pass " << mPass << " : t = " << TimeDiff(startTime, GetTime())*1e-3 << "s" << endl;
|
---|
| 506 | cout << "#TotalSamples=" << totalSamples/1000
|
---|
| 507 | << "k #SampleContributions=" << passSampleContributions << " ("
|
---|
| 508 | << 100*passContributingSamples/(float)passSamples<<"%)" << " avgPVS="
|
---|
| 509 | << pvsSize/(float)mObjects.size() << endl
|
---|
| 510 | << "avg ray contrib=" << avgRayContrib << endl;
|
---|
[468] | 511 |
|
---|
[490] | 512 | mStats <<
|
---|
| 513 | "#Pass\n" <<mPass<<endl<<
|
---|
| 514 | "#Time\n" << TimeDiff(startTime, GetTime())*1e-3 << endl<<
|
---|
| 515 | "#TotalSamples\n" << totalSamples<< endl<<
|
---|
| 516 | "#SampleContributions\n" << passSampleContributions << endl <<
|
---|
| 517 | "#PContributingSamples\n"<<100*passContributingSamples/(float)passSamples<<endl <<
|
---|
| 518 | "#AvgPVS\n"<< pvsSize/(float)mObjects.size() << endl <<
|
---|
| 519 | "#AvgRayContrib\n" << avgRayContrib << endl;
|
---|
| 520 | }
|
---|
| 521 |
|
---|
| 522 | cout << "#totalPvsSize=" << mKdTree->CollectLeafPvs() << endl;
|
---|
[534] | 523 |
|
---|
| 524 |
|
---|
| 525 |
|
---|
[490] | 526 | }
|
---|
| 527 |
|
---|
| 528 | cout << "#totalRayStackSize=" << (int)mVssRays.size() << endl << flush;
|
---|
| 529 | Debug << (int)mVssRays.size() << " rays generated in "
|
---|
| 530 | << TimeDiff(initialTime, GetTime()) * 1e-3 << " seconds" << endl;
|
---|
[401] | 531 |
|
---|
[490] | 532 | if (mStoreInitialSamples)
|
---|
| 533 | {
|
---|
| 534 | cout << "Writing " << (int)mVssRays.size() << " samples to file ... ";
|
---|
[508] | 535 | ExportSamples(mVssRays);
|
---|
[490] | 536 | cout << "finished\n" << endl;
|
---|
[491] | 537 |
|
---|
| 538 | /*VssRayContainer dummyRays;
|
---|
| 539 | LoadSamples(dummyRays, mObjects);
|
---|
| 540 | Debug << "rays " << (int)mVssRays.size() << " " << dummyRays.size() << endl;
|
---|
| 541 |
|
---|
| 542 | for (int i = 0; i < (int)mVssRays.size(); ++ i)
|
---|
| 543 | {
|
---|
| 544 | Debug << mVssRays[i]->GetOrigin() << " " << mVssRays[i]->GetTermination() << " " << mVssRays[i]->mOriginObject << " " << mVssRays[i]->mTerminationObject << endl;
|
---|
| 545 | Debug << dummyRays[i]->GetOrigin() << " " << dummyRays[i]->GetTermination() << " " << dummyRays[i]->mOriginObject << " " << dummyRays[i]->mTerminationObject << endl << endl;
|
---|
| 546 | }*/
|
---|
[434] | 547 | }
|
---|
[468] | 548 |
|
---|
[534] | 549 |
|
---|
| 550 | int numExportRays = 5000;
|
---|
| 551 | //int numExportRays = 0;
|
---|
[372] | 552 |
|
---|
[434] | 553 | if (numExportRays) {
|
---|
| 554 | char filename[64];
|
---|
| 555 | sprintf(filename, "vss-rays-initial.x3d");
|
---|
| 556 | ExportRays(filename, mVssRays, numExportRays);
|
---|
| 557 | }
|
---|
[468] | 558 |
|
---|
[518] | 559 | /// compute view cell contribution of rays if view cells manager already constructed
|
---|
| 560 | mViewCellsManager->ComputeSampleContributions(mVssRays);
|
---|
| 561 |
|
---|
[448] | 562 | // construct view cells
|
---|
[517] | 563 | if (!mDelayedViewCellsConstruction)
|
---|
| 564 | mViewCellsManager->Construct(mObjects, mVssRays);
|
---|
| 565 |
|
---|
[434] | 566 | vssTree = new VssTree;
|
---|
| 567 | // viewcells = Construct(mVssRays);
|
---|
[468] | 568 |
|
---|
[434] | 569 | vssTree->Construct(mVssRays, mViewSpaceBox);
|
---|
| 570 | cout<<"VssTree root PVS size = "<<vssTree->GetRootPvsSize()<<endl;
|
---|
[468] | 571 |
|
---|
[465] | 572 | if (0)
|
---|
| 573 | {
|
---|
| 574 | ExportVssTree("vss-tree-100.x3d", vssTree, Vector3(1,0,0));
|
---|
| 575 | ExportVssTree("vss-tree-001.x3d", vssTree, Vector3(0,0,1));
|
---|
| 576 | ExportVssTree("vss-tree-101.x3d", vssTree, Vector3(1,0,1));
|
---|
| 577 | ExportVssTree("vss-tree-101m.x3d", vssTree, Vector3(-1,0,-1));
|
---|
| 578 | ExportVssTreeLeaves(vssTree, 10);
|
---|
| 579 | }
|
---|
[430] | 580 |
|
---|
[434] | 581 | // viewcells->UpdatePVS(newVssRays);
|
---|
| 582 | // get viewcells as kd tree boxes
|
---|
| 583 | vector<AxisAlignedBox3> kdViewcells;
|
---|
| 584 | if (0) {
|
---|
| 585 | vector<KdLeaf *> leaves;
|
---|
| 586 | mKdTree->CollectLeaves(leaves);
|
---|
| 587 | vector<KdLeaf *>::const_iterator it;
|
---|
| 588 | int targetLeaves = 50;
|
---|
| 589 | float prob = targetLeaves/(float)leaves.size();
|
---|
| 590 | for (it = leaves.begin(); it != leaves.end(); ++it)
|
---|
| 591 | if (RandomValue(0.0f,1.0f) < prob)
|
---|
| 592 | kdViewcells.push_back(mKdTree->GetBox(*it));
|
---|
[468] | 593 |
|
---|
[434] | 594 | float avgPvs = GetAvgPvsSize(vssTree, kdViewcells);
|
---|
| 595 | cout<<"Initial average PVS size = "<<avgPvs<<endl;
|
---|
| 596 | }
|
---|
| 597 |
|
---|
[468] | 598 |
|
---|
[434] | 599 | int samples = 0;
|
---|
| 600 | int pass = 0;
|
---|
[448] | 601 |
|
---|
[532] | 602 | if (mTestBeamSampling)
|
---|
| 603 | TestBeamCasting(vssTree, mViewCellsManager);
|
---|
| 604 |
|
---|
[448] | 605 | // cast view cell samples
|
---|
[434] | 606 | while (1) {
|
---|
| 607 | int num = mVssSamplesPerPass;
|
---|
| 608 | SimpleRayContainer rays;
|
---|
| 609 | VssRayContainer vssRays;
|
---|
[468] | 610 |
|
---|
[434] | 611 | if (!mUseImportanceSampling) {
|
---|
| 612 | for (int j=0; j < num; j++) {
|
---|
[487] | 613 | // changed by matt
|
---|
| 614 | //Vector3 viewpoint = GetViewpoint(mViewSpaceBox);
|
---|
| 615 | Vector3 viewpoint;
|
---|
| 616 | mViewCellsManager->GetViewPoint(viewpoint);
|
---|
[434] | 617 | Vector3 direction = GetDirection(viewpoint, mViewSpaceBox);
|
---|
| 618 | rays.push_back(SimpleRay(viewpoint, direction));
|
---|
| 619 | }
|
---|
| 620 | } else {
|
---|
| 621 | num = GenerateImportanceRays(vssTree, num, rays);
|
---|
| 622 | }
|
---|
[468] | 623 |
|
---|
[434] | 624 | for (int i=0; i < rays.size(); i++)
|
---|
| 625 | CastRay(rays[i].mOrigin, rays[i].mDirection, vssRays);
|
---|
[468] | 626 |
|
---|
[434] | 627 | vssTree->AddRays(vssRays);
|
---|
[468] | 628 |
|
---|
[434] | 629 | if (0) {
|
---|
| 630 | int subdivided = vssTree->UpdateSubdivision();
|
---|
| 631 | cout<<"subdivided leafs = "<<subdivided<<endl;
|
---|
| 632 | }
|
---|
[427] | 633 |
|
---|
[434] | 634 | float avgPvs = GetAvgPvsSize(vssTree, kdViewcells);
|
---|
| 635 | cout<<"Average PVS size = "<<avgPvs<<endl;
|
---|
[430] | 636 |
|
---|
[517] | 637 | //Debug << "samples: " << samples << " construction samples " << mViewCellsManager->GetConstructionSamples() << endl;
|
---|
| 638 | // construct view cells after vss
|
---|
| 639 | if (!mViewCellsManager->ViewCellsConstructed() &&
|
---|
| 640 | (samples + mInitialSamples > mViewCellsManager->GetConstructionSamples()))
|
---|
| 641 | {
|
---|
| 642 | VssRayContainer constructionRays;
|
---|
| 643 | vssTree->CollectRays(constructionRays,
|
---|
| 644 | mViewCellsManager->GetConstructionSamples());
|
---|
| 645 | mViewCellsManager->Construct(mObjects, constructionRays);
|
---|
| 646 | }
|
---|
| 647 |
|
---|
| 648 | /// compute view cell contribution of rays
|
---|
| 649 | mViewCellsManager->ComputeSampleContributions(vssRays);
|
---|
| 650 |
|
---|
[434] | 651 | if (numExportRays) {
|
---|
| 652 | char filename[64];
|
---|
| 653 | if (mUseImportanceSampling)
|
---|
| 654 | sprintf(filename, "vss-rays-i%04d.x3d", pass);
|
---|
| 655 | else
|
---|
| 656 | sprintf(filename, "vss-rays-%04d.x3d", pass);
|
---|
[468] | 657 |
|
---|
[434] | 658 | ExportRays(filename, vssRays, numExportRays);
|
---|
[401] | 659 | }
|
---|
[386] | 660 |
|
---|
[434] | 661 | samples+=num;
|
---|
| 662 | float pvs = vssTree->GetAvgPvsSize();
|
---|
| 663 | cout<<"*****************************\n";
|
---|
| 664 | cout<<samples<<" avgPVS ="<<pvs<<endl;
|
---|
| 665 | cout<<"VssTree root PVS size = "<<vssTree->GetRootPvsSize()<<endl;
|
---|
| 666 | cout<<"*****************************\n";
|
---|
| 667 | if (samples >= mVssSamples)
|
---|
| 668 | break;
|
---|
| 669 | pass++;
|
---|
| 670 | }
|
---|
[448] | 671 |
|
---|
[468] | 672 |
|
---|
[517] | 673 | VssRayContainer viewCellRays;
|
---|
| 674 |
|
---|
| 675 | // compute rays used for view cells construction
|
---|
| 676 | int numRays = Max(mViewCellsManager->GetPostProcessSamples(),
|
---|
| 677 | mViewCellsManager->GetVisualizationSamples());
|
---|
[468] | 678 |
|
---|
[517] | 679 | vssTree->CollectRays(viewCellRays, numRays);
|
---|
| 680 |
|
---|
| 681 | //-- post process view cells
|
---|
| 682 | mViewCellsManager->PostProcess(mObjects, viewCellRays);
|
---|
[468] | 683 |
|
---|
[517] | 684 | //-- several visualizations and statistics
|
---|
| 685 | Debug << "\nview cells after post processing: " << endl;
|
---|
| 686 | mViewCellsManager->PrintStatistics(Debug);
|
---|
[452] | 687 |
|
---|
[517] | 688 | mViewCellsManager->Visualize(mObjects, viewCellRays);
|
---|
| 689 |
|
---|
[452] | 690 | //-- render simulation after merge
|
---|
| 691 | cout << "\nevaluating bsp view cells render time after merge ... ";
|
---|
[468] | 692 | mRenderSimulator->RenderScene();
|
---|
| 693 | SimulationStatistics ss;
|
---|
| 694 | mRenderSimulator->GetStatistics(ss);
|
---|
[474] | 695 |
|
---|
[452] | 696 | cout << " finished" << endl;
|
---|
| 697 | cout << ss << endl;
|
---|
| 698 | Debug << ss << endl;
|
---|
[468] | 699 |
|
---|
[434] | 700 | delete vssTree;
|
---|
[475] | 701 |
|
---|
[434] | 702 | return true;
|
---|
[466] | 703 | }
|
---|