[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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[556] | 81 | if (!mDetectEmptyViewSpace) |
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| 82 | ray.mFlags &= ~Ray::CULL_BACKFACES; |
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| 83 | else |
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| 84 | ray.mFlags |= Ray::CULL_BACKFACES; |
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| 85 | |
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[434] | 86 | if (mKdTree->CastRay(ray)) {
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| 87 | objectA = ray.intersections[0].mObject;
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| 88 | pointA = ray.Extrap(ray.intersections[0].mT);
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| 89 | } else {
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| 90 | objectA = NULL;
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| 91 | // compute intersection with the scene bounding box
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| 92 | float tmin, tmax;
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[499] | 93 | if (box.ComputeMinMaxT(ray, &tmin, &tmax) && tmin < tmax)
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| 94 | pointA = ray.Extrap(tmax);
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| 95 | else
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| 96 | return 0;
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[434] | 97 | }
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[386] | 98 |
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[499] | 99 |
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[534] | 100 | if (mDetectEmptyViewSpace) {
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[434] | 101 | SetupRay(ray, pointA, -direction);
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| 102 | } else
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| 103 | SetupRay(ray, viewPoint, -direction);
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[534] | 104 |
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| 105 | if (!mDetectEmptyViewSpace)
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| 106 | ray.mFlags &= ~Ray::CULL_BACKFACES;
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[556] | 107 | else |
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| 108 | ray.mFlags |= Ray::CULL_BACKFACES; |
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| 109 | |
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[434] | 110 | if (mKdTree->CastRay(ray)) {
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| 111 | objectB = ray.intersections[0].mObject;
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| 112 | pointB = ray.Extrap(ray.intersections[0].mT);
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| 113 | } else {
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| 114 | objectB = NULL;
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| 115 | float tmin, tmax;
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[499] | 116 | if (box.ComputeMinMaxT(ray, &tmin, &tmax) && tmin < tmax)
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| 117 | pointB = ray.Extrap(tmax);
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| 118 | else
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| 119 | return 0;
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| 120 | }
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[534] | 121 |
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[499] | 122 | // if (objectA == NULL && objectB != NULL) {
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[534] | 123 | if (mDetectEmptyViewSpace) {
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[499] | 124 | // cast again to ensure that there is no objectA
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| 125 | SetupRay(ray, pointB, direction);
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[556] | 126 | ray.mFlags |= Ray::CULL_BACKFACES; |
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[499] | 127 | if (mKdTree->CastRay(ray)) {
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| 128 | objectA = ray.intersections[0].mObject;
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| 129 | pointA = ray.Extrap(ray.intersections[0].mT);
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[434] | 130 | }
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| 131 | }
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[534] | 132 |
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[499] | 133 |
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[434] | 134 | VssRay *vssRay = NULL;
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[386] | 135 |
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[499] | 136 | bool validSample = (objectA != objectB);
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[534] | 137 | if (0 && mDetectEmptyViewSpace) { // consider all samples valid
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[499] | 138 | // check if the viewpoint lies on the line segment AB
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[434] | 139 | if (Distance(pointA, pointB) <
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| 140 | Distance(viewPoint, pointA) + Distance(viewPoint, pointB) - Limits::Small) {
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| 141 | validSample = false;
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[386] | 142 | }
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[434] | 143 | }
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[499] | 144 |
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[434] | 145 | if (validSample) {
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| 146 | if (objectA) {
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| 147 | vssRay = new VssRay(pointB,
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| 148 | pointA,
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| 149 | objectB,
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[499] | 150 | objectA,
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| 151 | mPass
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| 152 | );
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[434] | 153 | vssRays.push_back(vssRay);
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| 154 | hits ++;
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| 155 | }
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[499] | 156 |
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[434] | 157 | if (objectB) {
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| 158 | vssRay = new VssRay(pointA,
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| 159 | pointB,
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| 160 | objectA,
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[499] | 161 | objectB,
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| 162 | mPass
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| 163 | );
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[434] | 164 | vssRays.push_back(vssRay);
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| 165 | hits ++;
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[372] | 166 | }
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[434] | 167 | }
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[499] | 168 |
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[434] | 169 | return hits;
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[372] | 170 | }
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| 171 |
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| 172 |
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[376] | 173 | Vector3
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[382] | 174 | VssPreprocessor::GetViewpoint(AxisAlignedBox3 *viewSpaceBox)
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[372] | 175 | {
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[434] | 176 | AxisAlignedBox3 box;
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[468] | 177 |
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[434] | 178 | if (viewSpaceBox)
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| 179 | box =*viewSpaceBox;
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[468] | 180 | else
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[434] | 181 | box = mKdTree->GetBox();
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[468] | 182 |
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[434] | 183 | // shrink the box in the y direction
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| 184 | return box.GetRandomPoint();
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[372] | 185 | }
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| 186 |
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[376] | 187 | Vector3
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[427] | 188 | VssPreprocessor::GetDirection(const Vector3 &viewpoint,
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[434] | 189 | AxisAlignedBox3 *viewSpaceBox
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| 190 | )
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[372] | 191 | {
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[434] | 192 | Vector3 point;
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| 193 | if (!use2dSampling) {
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[534] | 194 | if (0) {
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| 195 | Vector3 normal;
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| 196 | int i = Random((int)mObjects.size());
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| 197 | Intersectable *object = mObjects[i];
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| 198 | object->GetRandomSurfacePoint(point, normal);
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| 199 | } else
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| 200 | point = mKdTree->GetBox().GetRandomPoint();
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| 201 | // point = viewpoint + UniformRandomVector();
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| 202 |
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[434] | 203 | } else {
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| 204 | AxisAlignedBox3 box;
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[468] | 205 |
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[434] | 206 | if (viewSpaceBox)
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| 207 | box =*viewSpaceBox;
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[468] | 208 | else
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[434] | 209 | box = mKdTree->GetBox();
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[468] | 210 |
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[434] | 211 | point = box.GetRandomPoint();
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| 212 | point.y = viewpoint.y;
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| 213 | }
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[468] | 214 |
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[434] | 215 | return point - viewpoint;
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[372] | 216 | }
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| 217 |
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[401] | 218 | int
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[427] | 219 | VssPreprocessor::GenerateImportanceRays(VssTree *vssTree,
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[434] | 220 | const int desiredSamples,
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| 221 | SimpleRayContainer &rays
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| 222 | )
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[401] | 223 | {
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[434] | 224 | int num;
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| 225 | if (0) {
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| 226 | float minRayContribution;
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| 227 | float maxRayContribution;
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| 228 | float avgRayContribution;
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[468] | 229 |
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[434] | 230 | vssTree->GetRayContributionStatistics(minRayContribution,
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| 231 | maxRayContribution,
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| 232 | avgRayContribution);
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[468] | 233 |
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[434] | 234 | cout<<
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| 235 | "#MIN_RAY_CONTRIB\n"<<minRayContribution<<endl<<
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| 236 | "#MAX_RAY_CONTRIB\n"<<maxRayContribution<<endl<<
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| 237 | "#AVG_RAY_CONTRIB\n"<<avgRayContribution<<endl;
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[468] | 238 |
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[434] | 239 | float p = desiredSamples/(float)(avgRayContribution*vssTree->stat.Leaves());
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| 240 | num = vssTree->GenerateRays(p, rays);
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| 241 | } else {
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[534] | 242 | int leaves = vssTree->stat.Leaves();
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[434] | 243 | num = vssTree->GenerateRays(desiredSamples, leaves, rays);
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| 244 | }
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[468] | 245 |
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[434] | 246 | cout<<"Generated "<<num<<" rays."<<endl;
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[468] | 247 |
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[434] | 248 | return num;
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[427] | 249 | }
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[376] | 250 |
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| 251 |
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[427] | 252 | bool
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| 253 | VssPreprocessor::ExportRays(const char *filename,
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[434] | 254 | const VssRayContainer &vssRays,
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| 255 | const int number
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| 256 | )
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[427] | 257 | {
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[434] | 258 | cout<<"Exporting vss rays..."<<endl<<flush;
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[468] | 259 |
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[434] | 260 | Exporter *exporter = NULL;
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| 261 | exporter = Exporter::GetExporter(filename);
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| 262 | // exporter->SetWireframe();
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| 263 | // exporter->ExportKdTree(*mKdTree);
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| 264 | exporter->SetFilled();
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| 265 | exporter->ExportScene(mSceneGraph->mRoot);
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| 266 | exporter->SetWireframe();
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[427] | 267 |
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[434] | 268 | if (mViewSpaceBox) {
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[438] | 269 | exporter->SetForcedMaterial(RgbColor(1,0,1));
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[434] | 270 | exporter->ExportBox(*mViewSpaceBox);
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| 271 | exporter->ResetForcedMaterial();
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| 272 | }
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[468] | 273 |
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[534] | 274 | VssRayContainer rays;
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| 275 | vssRays.SelectRays(number, rays);
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| 276 |
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[434] | 277 | exporter->ExportRays(rays, RgbColor(1, 0, 0));
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[468] | 278 |
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[434] | 279 | delete exporter;
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[401] | 280 |
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[434] | 281 | cout<<"done."<<endl<<flush;
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[427] | 282 |
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[434] | 283 | return true;
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[401] | 284 | }
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| 285 |
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| 286 |
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[372] | 287 | bool
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[434] | 288 | VssPreprocessor::ExportVssTree(char *filename,
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[438] | 289 | VssTree *tree,
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| 290 | const Vector3 &dir
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| 291 | )
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[434] | 292 | {
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| 293 | Exporter *exporter = Exporter::GetExporter(filename);
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| 294 | exporter->SetFilled();
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| 295 | exporter->ExportScene(mSceneGraph->mRoot);
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[438] | 296 | // exporter->SetWireframe();
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| 297 | bool result = exporter->ExportVssTree2( *tree, dir );
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[434] | 298 | delete exporter;
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| 299 | return result;
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| 300 | }
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| 301 |
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| 302 | bool
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[427] | 303 | VssPreprocessor::ExportVssTreeLeaf(char *filename,
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[434] | 304 | VssTree *tree,
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| 305 | VssTreeLeaf *leaf)
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[427] | 306 | {
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[434] | 307 | Exporter *exporter = NULL;
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| 308 | exporter = Exporter::GetExporter(filename);
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| 309 | exporter->SetWireframe();
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| 310 | exporter->ExportKdTree(*mKdTree);
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[468] | 311 |
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[434] | 312 | if (mViewSpaceBox) {
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| 313 | exporter->SetForcedMaterial(RgbColor(1,0,0));
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| 314 | exporter->ExportBox(*mViewSpaceBox);
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[427] | 315 | exporter->ResetForcedMaterial();
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[434] | 316 | }
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[468] | 317 |
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[434] | 318 | exporter->SetForcedMaterial(RgbColor(0,0,1));
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| 319 | exporter->ExportBox(tree->GetBBox(leaf));
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| 320 | exporter->ResetForcedMaterial();
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[468] | 321 |
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[434] | 322 | VssRayContainer rays[4];
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| 323 | for (int i=0; i < leaf->rays.size(); i++) {
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| 324 | int k = leaf->rays[i].GetRayClass();
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| 325 | rays[k].push_back(leaf->rays[i].mRay);
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| 326 | }
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[468] | 327 |
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[434] | 328 | // SOURCE RAY
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| 329 | exporter->ExportRays(rays[0], RgbColor(1, 0, 0));
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| 330 | // TERMINATION RAY
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| 331 | exporter->ExportRays(rays[1], RgbColor(1, 1, 1));
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| 332 | // PASSING_RAY
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| 333 | exporter->ExportRays(rays[2], RgbColor(1, 1, 0));
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| 334 | // CONTAINED_RAY
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| 335 | exporter->ExportRays(rays[3], RgbColor(0, 0, 1));
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[427] | 336 |
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[434] | 337 | delete exporter;
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| 338 | return true;
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[427] | 339 | }
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| 340 |
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| 341 | void
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| 342 | VssPreprocessor::ExportVssTreeLeaves(VssTree *tree, const int number)
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| 343 | {
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[434] | 344 | vector<VssTreeLeaf *> leaves;
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| 345 | tree->CollectLeaves(leaves);
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[427] | 346 |
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[434] | 347 | int num = 0;
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| 348 | int i;
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| 349 | float p = number / (float)leaves.size();
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| 350 | for (i=0; i < leaves.size(); i++) {
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| 351 | if (RandomValue(0,1) < p) {
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| 352 | char filename[64];
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| 353 | sprintf(filename, "vss-leaf-%04d.x3d", num);
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| 354 | ExportVssTreeLeaf(filename, tree, leaves[i]);
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| 355 | num++;
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[427] | 356 | }
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[434] | 357 | if (num >= number)
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| 358 | break;
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| 359 | }
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[427] | 360 | }
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[535] | 361 | #include "ViewCellBsp.h"
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[427] | 362 |
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[535] | 363 | void VssPreprocessor::TestBeamCasting(VssTree *tree,
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| 364 | ViewCellsManager *vm,
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| 365 | const ObjectContainer &objects)
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[530] | 366 | {
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[540] | 367 | //debuggerWidget = new GlDebuggerWidget(renderer);
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| 368 | // renderer->resize(640, 480);
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| 369 | //debuggerWidget->resize(640, 480);
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| 370 |
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[531] | 371 | vector<VssTreeLeaf *> leaves;
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| 372 | tree->CollectLeaves(leaves);
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[530] | 373 |
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[535] | 374 | Exporter *exporter = Exporter::GetExporter("shafts.x3d");
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| 375 |
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| 376 | exporter->SetWireframe();
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[540] | 377 | exporter->ExportGeometry(objects);
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[535] | 378 | exporter->SetFilled();
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| 379 | //Randomize();
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[540] | 380 | debuggerWidget = new GlDebuggerWidget(renderer);
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| 381 |
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| 382 | /*debuggerWidget->mBeam = beam;
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| 383 | debuggerWidget->mSourceObject = sourceObj;
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| 384 | debuggerWidget->mSamples = 10000;
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| 385 |
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| 386 | Debug << "showing window" << endl;
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| 387 | debuggerWidget->show();*/
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| 388 |
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| 389 | renderer->makeCurrent();
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| 390 |
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| 391 | for (int i = 0; i < 10; ++ i)
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[530] | 392 | {
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[540] | 393 | Beam beam;
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| 394 | Intersectable *sourceObj = mObjects[5];
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| 395 |
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[531] | 396 | const int index = (int)RandomValue(0, (Real)((int)leaves.size() - 1));
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| 397 | VssTreeLeaf *leaf = leaves[index];
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[530] | 398 |
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[535] | 399 | AxisAlignedBox3 dirBox = tree->GetDirBBox(leaf);
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[531] | 400 | AxisAlignedBox3 box = tree->GetBBox(leaf);
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[532] | 401 |
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[535] | 402 | beam.Construct(box, dirBox);
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[532] | 403 |
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| 404 | // collect kd leaves and view cells
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| 405 | mKdTree->CastBeam(beam);
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| 406 | vm->CastBeam(beam);
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| 407 |
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| 408 | Debug << "found " << beam.mViewCells.size() << " view cells and "
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| 409 | << beam.mKdNodes.size() << " kd nodes" << endl;
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| 410 |
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[530] | 411 | BeamSampleStatistics stats;
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[538] | 412 |
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[531] | 413 | renderer->SampleBeamContributions(sourceObj, |
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| 414 | beam, |
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[540] | 415 | 200000, |
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[531] | 416 | stats);
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[530] | 417 |
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[540] | 418 | char s[64]; sprintf(s, "shaft%04d.png", i);
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| 419 |
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| 420 | QImage image = renderer->toImage();
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| 421 | image.save(s, "PNG");
|
---|
[532] | 422 | Debug << "beam statistics: " << stats << endl << endl;
|
---|
[540] | 423 |
|
---|
| 424 | if (1)
|
---|
| 425 | {
|
---|
| 426 | AxisAlignedBox3 sbox = mSceneGraph->GetBox();
|
---|
| 427 | Vector3 bmin = sbox.Min() - 150.0f;
|
---|
| 428 | Vector3 bmax = sbox.Max() + 150.0f;
|
---|
| 429 | AxisAlignedBox3 vbox(bmin, bmax);
|
---|
[535] | 430 |
|
---|
[540] | 431 | exporter->ExportBeam(beam, vbox);
|
---|
| 432 | }
|
---|
[535] | 433 |
|
---|
[540] | 434 | bool exportViewCells = false;
|
---|
[535] | 435 |
|
---|
| 436 | if (exportViewCells)
|
---|
| 437 | {
|
---|
| 438 | ViewCellContainer::const_iterator it, it_end = beam.mViewCells.end();
|
---|
| 439 |
|
---|
| 440 | for (it = beam.mViewCells.begin(); it != beam.mViewCells.end(); ++ it)
|
---|
| 441 | {
|
---|
| 442 | BspNodeGeometry geom;
|
---|
| 443 | AxisAlignedBox3 vbox;
|
---|
| 444 | vbox.Initialize();
|
---|
[538] | 445 | vbox.Include((*it)->GetMesh());
|
---|
| 446 |
|
---|
| 447 | exporter->SetWireframe();
|
---|
[535] | 448 | exporter->ExportBox(vbox);
|
---|
[538] | 449 | exporter->SetFilled();
|
---|
| 450 | exporter->ExportViewCell(*it);
|
---|
[535] | 451 | }
|
---|
[538] | 452 |
|
---|
| 453 | /*vector<KdNode *>::const_iterator it, it_end = beam.mKdNodes.end();
|
---|
| 454 |
|
---|
| 455 | for (it = beam.mKdNodes.begin(); it != beam.mKdNodes.end(); ++ it)
|
---|
| 456 | {
|
---|
| 457 | exporter->ExportBox(mKdTree->GetBox((*it)));
|
---|
| 458 | }*/
|
---|
[535] | 459 | }
|
---|
[530] | 460 | }
|
---|
[540] | 461 | /*while (1)
|
---|
| 462 | { debuggerWidget->repaint();
|
---|
| 463 | };*/
|
---|
[535] | 464 | delete exporter;
|
---|
[530] | 465 | }
|
---|
| 466 |
|
---|
[540] | 467 |
|
---|
[434] | 468 | float
|
---|
| 469 | VssPreprocessor::GetAvgPvsSize(VssTree *tree,
|
---|
| 470 | const vector<AxisAlignedBox3> &viewcells
|
---|
| 471 | )
|
---|
| 472 | {
|
---|
| 473 | vector<AxisAlignedBox3>::const_iterator it, it_end = viewcells.end();
|
---|
| 474 |
|
---|
| 475 | int sum = 0;
|
---|
| 476 | for (it = viewcells.begin(); it != it_end; ++ it)
|
---|
| 477 | sum += tree->GetPvsSize(*it);
|
---|
[468] | 478 |
|
---|
[434] | 479 | return sum/(float)viewcells.size();
|
---|
| 480 | }
|
---|
| 481 |
|
---|
[427] | 482 | bool
|
---|
[372] | 483 | VssPreprocessor::ComputeVisibility()
|
---|
| 484 | {
|
---|
[468] | 485 |
|
---|
| 486 |
|
---|
[372] | 487 | long startTime = GetTime();
|
---|
[468] | 488 |
|
---|
[372] | 489 | int totalSamples = 0;
|
---|
| 490 |
|
---|
| 491 |
|
---|
[434] | 492 | AxisAlignedBox3 *box = new AxisAlignedBox3(mKdTree->GetBox());
|
---|
[534] | 493 |
|
---|
[434] | 494 | if (!useViewspacePlane) {
|
---|
[446] | 495 | float size = 0.05f;
|
---|
[434] | 496 | float s = 0.5f - size;
|
---|
| 497 | float olds = Magnitude(box->Size());
|
---|
| 498 | box->Enlarge(box->Size()*Vector3(-s));
|
---|
| 499 | Vector3 translation = Vector3(-olds*0.1f, 0, 0);
|
---|
| 500 | box->SetMin(box->Min() + translation);
|
---|
| 501 | box->SetMax(box->Max() + translation);
|
---|
| 502 | } else {
|
---|
[468] | 503 |
|
---|
[434] | 504 | // sample city like heights
|
---|
[469] | 505 | box->SetMin(1, box->Min(1) + box->Size(1)*0.2f);
|
---|
| 506 | box->SetMax(1, box->Min(1) + box->Size(1)*0.3f);
|
---|
[434] | 507 | }
|
---|
[427] | 508 |
|
---|
[434] | 509 | if (use2dSampling)
|
---|
| 510 | box->SetMax(1, box->Min(1));
|
---|
[468] | 511 |
|
---|
[534] | 512 | cout<<"mUseViewSpaceBox="<<mUseViewSpaceBox<<endl;
|
---|
[551] | 513 | Debug << "use view space box=" << mUseViewSpaceBox << endl;
|
---|
[501] | 514 | if (mUseViewSpaceBox)
|
---|
[487] | 515 | {
|
---|
[434] | 516 | mViewSpaceBox = box;
|
---|
[487] | 517 | mViewCellsManager->SetViewSpaceBox(*box);
|
---|
| 518 | }
|
---|
[434] | 519 | else
|
---|
[487] | 520 | {
|
---|
[434] | 521 | mViewSpaceBox = NULL;
|
---|
[487] | 522 | mViewCellsManager->SetViewSpaceBox(mKdTree->GetBox());
|
---|
| 523 | }
|
---|
[534] | 524 |
|
---|
[518] | 525 | //-- load view cells from file if requested
|
---|
| 526 | if (mLoadViewCells)
|
---|
[527] | 527 | {
|
---|
| 528 | // load now because otherwise bounding box not correct
|
---|
[520] | 529 | mViewCellsManager->LoadViewCells(mViewCellsFilename, &mObjects);
|
---|
[518] | 530 | }
|
---|
| 531 |
|
---|
| 532 |
|
---|
[434] | 533 | VssTree *vssTree = NULL;
|
---|
[401] | 534 |
|
---|
[490] | 535 | mSceneGraph->CollectObjects(&mObjects);
|
---|
[468] | 536 |
|
---|
[490] | 537 | long initialTime = GetTime();
|
---|
[468] | 538 |
|
---|
[490] | 539 | if (mLoadInitialSamples)
|
---|
| 540 | {
|
---|
| 541 | cout << "Loading samples from file ... ";
|
---|
| 542 | LoadSamples(mVssRays, mObjects);
|
---|
| 543 | cout << "finished\n" << endl;
|
---|
| 544 | totalSamples = (int)mVssRays.size();
|
---|
| 545 | }
|
---|
| 546 | else
|
---|
| 547 | {
|
---|
[534] | 548 |
|
---|
| 549 | while (totalSamples < mInitialSamples) {
|
---|
[490] | 550 | int passContributingSamples = 0;
|
---|
| 551 | int passSampleContributions = 0;
|
---|
| 552 | int passSamples = 0;
|
---|
[468] | 553 |
|
---|
[490] | 554 | int index = 0;
|
---|
[468] | 555 |
|
---|
[490] | 556 | int sampleContributions;
|
---|
[468] | 557 |
|
---|
[490] | 558 | int s = Min(mSamplesPerPass, mInitialSamples);
|
---|
| 559 | for (int k=0; k < s; k++) {
|
---|
| 560 | // changed by matt
|
---|
| 561 | Vector3 viewpoint;
|
---|
[534] | 562 | // viewpoint = GetViewpoint(mViewSpaceBox);
|
---|
[490] | 563 | mViewCellsManager->GetViewPoint(viewpoint);
|
---|
| 564 | Vector3 direction = GetDirection(viewpoint, mViewSpaceBox);
|
---|
[534] | 565 |
|
---|
[490] | 566 | sampleContributions = CastRay(viewpoint, direction, mVssRays);
|
---|
[468] | 567 |
|
---|
[490] | 568 | if (sampleContributions) {
|
---|
| 569 | passContributingSamples ++;
|
---|
| 570 | passSampleContributions += sampleContributions;
|
---|
| 571 | }
|
---|
| 572 | passSamples++;
|
---|
| 573 | totalSamples++;
|
---|
| 574 | }
|
---|
[468] | 575 |
|
---|
[490] | 576 | mPass++;
|
---|
| 577 | int pvsSize = 0;
|
---|
| 578 | float avgRayContrib = (passContributingSamples > 0) ?
|
---|
| 579 | passSampleContributions/(float)passContributingSamples : 0;
|
---|
[468] | 580 |
|
---|
[490] | 581 | cout << "#Pass " << mPass << " : t = " << TimeDiff(startTime, GetTime())*1e-3 << "s" << endl;
|
---|
| 582 | cout << "#TotalSamples=" << totalSamples/1000
|
---|
| 583 | << "k #SampleContributions=" << passSampleContributions << " ("
|
---|
| 584 | << 100*passContributingSamples/(float)passSamples<<"%)" << " avgPVS="
|
---|
| 585 | << pvsSize/(float)mObjects.size() << endl
|
---|
| 586 | << "avg ray contrib=" << avgRayContrib << endl;
|
---|
[468] | 587 |
|
---|
[490] | 588 | mStats <<
|
---|
| 589 | "#Pass\n" <<mPass<<endl<<
|
---|
| 590 | "#Time\n" << TimeDiff(startTime, GetTime())*1e-3 << endl<<
|
---|
| 591 | "#TotalSamples\n" << totalSamples<< endl<<
|
---|
| 592 | "#SampleContributions\n" << passSampleContributions << endl <<
|
---|
| 593 | "#PContributingSamples\n"<<100*passContributingSamples/(float)passSamples<<endl <<
|
---|
| 594 | "#AvgPVS\n"<< pvsSize/(float)mObjects.size() << endl <<
|
---|
| 595 | "#AvgRayContrib\n" << avgRayContrib << endl;
|
---|
| 596 | }
|
---|
| 597 |
|
---|
| 598 | cout << "#totalPvsSize=" << mKdTree->CollectLeafPvs() << endl;
|
---|
[534] | 599 |
|
---|
| 600 |
|
---|
| 601 |
|
---|
[490] | 602 | }
|
---|
| 603 |
|
---|
| 604 | cout << "#totalRayStackSize=" << (int)mVssRays.size() << endl << flush;
|
---|
| 605 | Debug << (int)mVssRays.size() << " rays generated in "
|
---|
| 606 | << TimeDiff(initialTime, GetTime()) * 1e-3 << " seconds" << endl;
|
---|
[401] | 607 |
|
---|
[490] | 608 | if (mStoreInitialSamples)
|
---|
| 609 | {
|
---|
| 610 | cout << "Writing " << (int)mVssRays.size() << " samples to file ... ";
|
---|
[508] | 611 | ExportSamples(mVssRays);
|
---|
[490] | 612 | cout << "finished\n" << endl;
|
---|
[491] | 613 |
|
---|
| 614 | /*VssRayContainer dummyRays;
|
---|
| 615 | LoadSamples(dummyRays, mObjects);
|
---|
| 616 | Debug << "rays " << (int)mVssRays.size() << " " << dummyRays.size() << endl;
|
---|
| 617 |
|
---|
| 618 | for (int i = 0; i < (int)mVssRays.size(); ++ i)
|
---|
| 619 | {
|
---|
| 620 | Debug << mVssRays[i]->GetOrigin() << " " << mVssRays[i]->GetTermination() << " " << mVssRays[i]->mOriginObject << " " << mVssRays[i]->mTerminationObject << endl;
|
---|
| 621 | Debug << dummyRays[i]->GetOrigin() << " " << dummyRays[i]->GetTermination() << " " << dummyRays[i]->mOriginObject << " " << dummyRays[i]->mTerminationObject << endl << endl;
|
---|
| 622 | }*/
|
---|
[434] | 623 | }
|
---|
[468] | 624 |
|
---|
[534] | 625 |
|
---|
[540] | 626 | //int numExportRays = 5000;
|
---|
| 627 | int numExportRays = 0;
|
---|
[372] | 628 |
|
---|
[434] | 629 | if (numExportRays) {
|
---|
| 630 | char filename[64];
|
---|
| 631 | sprintf(filename, "vss-rays-initial.x3d");
|
---|
| 632 | ExportRays(filename, mVssRays, numExportRays);
|
---|
| 633 | }
|
---|
[468] | 634 |
|
---|
[518] | 635 | /// compute view cell contribution of rays if view cells manager already constructed
|
---|
| 636 | mViewCellsManager->ComputeSampleContributions(mVssRays);
|
---|
| 637 |
|
---|
[448] | 638 | // construct view cells
|
---|
[517] | 639 | if (!mDelayedViewCellsConstruction)
|
---|
| 640 | mViewCellsManager->Construct(mObjects, mVssRays);
|
---|
| 641 |
|
---|
[434] | 642 | vssTree = new VssTree;
|
---|
| 643 | // viewcells = Construct(mVssRays);
|
---|
[468] | 644 |
|
---|
[434] | 645 | vssTree->Construct(mVssRays, mViewSpaceBox);
|
---|
| 646 | cout<<"VssTree root PVS size = "<<vssTree->GetRootPvsSize()<<endl;
|
---|
[468] | 647 |
|
---|
[465] | 648 | if (0)
|
---|
| 649 | {
|
---|
| 650 | ExportVssTree("vss-tree-100.x3d", vssTree, Vector3(1,0,0));
|
---|
| 651 | ExportVssTree("vss-tree-001.x3d", vssTree, Vector3(0,0,1));
|
---|
| 652 | ExportVssTree("vss-tree-101.x3d", vssTree, Vector3(1,0,1));
|
---|
| 653 | ExportVssTree("vss-tree-101m.x3d", vssTree, Vector3(-1,0,-1));
|
---|
| 654 | ExportVssTreeLeaves(vssTree, 10);
|
---|
| 655 | }
|
---|
[430] | 656 |
|
---|
[434] | 657 | // viewcells->UpdatePVS(newVssRays);
|
---|
| 658 | // get viewcells as kd tree boxes
|
---|
| 659 | vector<AxisAlignedBox3> kdViewcells;
|
---|
| 660 | if (0) {
|
---|
| 661 | vector<KdLeaf *> leaves;
|
---|
| 662 | mKdTree->CollectLeaves(leaves);
|
---|
| 663 | vector<KdLeaf *>::const_iterator it;
|
---|
| 664 | int targetLeaves = 50;
|
---|
| 665 | float prob = targetLeaves/(float)leaves.size();
|
---|
| 666 | for (it = leaves.begin(); it != leaves.end(); ++it)
|
---|
| 667 | if (RandomValue(0.0f,1.0f) < prob)
|
---|
| 668 | kdViewcells.push_back(mKdTree->GetBox(*it));
|
---|
[468] | 669 |
|
---|
[434] | 670 | float avgPvs = GetAvgPvsSize(vssTree, kdViewcells);
|
---|
| 671 | cout<<"Initial average PVS size = "<<avgPvs<<endl;
|
---|
| 672 | }
|
---|
| 673 |
|
---|
[468] | 674 |
|
---|
[434] | 675 | int samples = 0;
|
---|
| 676 | int pass = 0;
|
---|
[448] | 677 |
|
---|
[535] | 678 |
|
---|
[448] | 679 | // cast view cell samples
|
---|
[557] | 680 | while (samples < mVssSamples)
|
---|
| 681 | {
|
---|
| 682 |
|
---|
[434] | 683 | int num = mVssSamplesPerPass;
|
---|
| 684 | SimpleRayContainer rays;
|
---|
| 685 | VssRayContainer vssRays;
|
---|
[468] | 686 |
|
---|
[434] | 687 | if (!mUseImportanceSampling) {
|
---|
| 688 | for (int j=0; j < num; j++) {
|
---|
[487] | 689 | // changed by matt
|
---|
| 690 | //Vector3 viewpoint = GetViewpoint(mViewSpaceBox);
|
---|
| 691 | Vector3 viewpoint;
|
---|
| 692 | mViewCellsManager->GetViewPoint(viewpoint);
|
---|
[434] | 693 | Vector3 direction = GetDirection(viewpoint, mViewSpaceBox);
|
---|
| 694 | rays.push_back(SimpleRay(viewpoint, direction));
|
---|
| 695 | }
|
---|
| 696 | } else {
|
---|
| 697 | num = GenerateImportanceRays(vssTree, num, rays);
|
---|
| 698 | }
|
---|
[468] | 699 |
|
---|
[434] | 700 | for (int i=0; i < rays.size(); i++)
|
---|
| 701 | CastRay(rays[i].mOrigin, rays[i].mDirection, vssRays);
|
---|
[468] | 702 |
|
---|
[434] | 703 | vssTree->AddRays(vssRays);
|
---|
[468] | 704 |
|
---|
[434] | 705 | if (0) {
|
---|
| 706 | int subdivided = vssTree->UpdateSubdivision();
|
---|
| 707 | cout<<"subdivided leafs = "<<subdivided<<endl;
|
---|
| 708 | }
|
---|
[427] | 709 |
|
---|
[434] | 710 | float avgPvs = GetAvgPvsSize(vssTree, kdViewcells);
|
---|
| 711 | cout<<"Average PVS size = "<<avgPvs<<endl;
|
---|
[430] | 712 |
|
---|
[517] | 713 | // construct view cells after vss
|
---|
[554] | 714 | if (!mViewCellsManager->ViewCellsConstructed() &&
|
---|
| 715 | (samples + mInitialSamples >= mViewCellsManager->GetConstructionSamples()))
|
---|
[517] | 716 | {
|
---|
[552] | 717 | Debug << "samples " << samples << " initial " << mInitialSamples << " " << samples + mInitialSamples << endl;
|
---|
[517] | 718 | VssRayContainer constructionRays;
|
---|
[554] | 719 | vssTree->CollectRays(constructionRays, mViewCellsManager->GetConstructionSamples());
|
---|
[552] | 720 |
|
---|
| 721 | Debug << "collected rays: " << constructionRays.size() << endl;
|
---|
| 722 |
|
---|
| 723 | // test if we really have enough rays
|
---|
[557] | 724 | //if (constructionRays.size() >= nSamples)
|
---|
[554] | 725 | mViewCellsManager->Construct(mObjects, constructionRays);
|
---|
[517] | 726 | }
|
---|
| 727 |
|
---|
| 728 | /// compute view cell contribution of rays
|
---|
| 729 | mViewCellsManager->ComputeSampleContributions(vssRays);
|
---|
| 730 |
|
---|
[434] | 731 | if (numExportRays) {
|
---|
| 732 | char filename[64];
|
---|
| 733 | if (mUseImportanceSampling)
|
---|
| 734 | sprintf(filename, "vss-rays-i%04d.x3d", pass);
|
---|
| 735 | else
|
---|
| 736 | sprintf(filename, "vss-rays-%04d.x3d", pass);
|
---|
[468] | 737 |
|
---|
[434] | 738 | ExportRays(filename, vssRays, numExportRays);
|
---|
[401] | 739 | }
|
---|
[386] | 740 |
|
---|
[434] | 741 | samples+=num;
|
---|
| 742 | float pvs = vssTree->GetAvgPvsSize();
|
---|
| 743 | cout<<"*****************************\n";
|
---|
| 744 | cout<<samples<<" avgPVS ="<<pvs<<endl;
|
---|
| 745 | cout<<"VssTree root PVS size = "<<vssTree->GetRootPvsSize()<<endl;
|
---|
| 746 | cout<<"*****************************\n";
|
---|
[557] | 747 | // if (samples >= mVssSamples) break;
|
---|
| 748 | pass ++;
|
---|
[434] | 749 | }
|
---|
[448] | 750 |
|
---|
[552] | 751 |
|
---|
[553] | 752 | // at the latest create view cells here
|
---|
| 753 | if (!mViewCellsManager->ViewCellsConstructed())
|
---|
| 754 | {
|
---|
| 755 | VssRayContainer constructionRays;
|
---|
| 756 |
|
---|
[554] | 757 | vssTree->CollectRays(constructionRays,
|
---|
| 758 | mViewCellsManager->GetConstructionSamples());
|
---|
[553] | 759 | Debug << "collected rays: " << constructionRays.size() << endl;
|
---|
| 760 |
|
---|
| 761 | mViewCellsManager->Construct(mObjects, constructionRays);
|
---|
| 762 | }
|
---|
| 763 |
|
---|
[535] | 764 | Debug << vssTree->stat << endl;
|
---|
[517] | 765 | VssRayContainer viewCellRays;
|
---|
| 766 |
|
---|
| 767 | // compute rays used for view cells construction
|
---|
| 768 | int numRays = Max(mViewCellsManager->GetPostProcessSamples(),
|
---|
| 769 | mViewCellsManager->GetVisualizationSamples());
|
---|
[468] | 770 |
|
---|
[517] | 771 | vssTree->CollectRays(viewCellRays, numRays);
|
---|
| 772 |
|
---|
| 773 | //-- post process view cells
|
---|
| 774 | mViewCellsManager->PostProcess(mObjects, viewCellRays);
|
---|
[468] | 775 |
|
---|
[540] | 776 | if (mTestBeamSampling && mUseGlRenderer)
|
---|
| 777 | {
|
---|
[535] | 778 | TestBeamCasting(vssTree, mViewCellsManager, mObjects);
|
---|
[540] | 779 | }
|
---|
[535] | 780 |
|
---|
[517] | 781 | //-- several visualizations and statistics
|
---|
| 782 | Debug << "\nview cells after post processing: " << endl;
|
---|
| 783 | mViewCellsManager->PrintStatistics(Debug);
|
---|
[452] | 784 |
|
---|
[517] | 785 | mViewCellsManager->Visualize(mObjects, viewCellRays);
|
---|
| 786 |
|
---|
[452] | 787 | //-- render simulation after merge
|
---|
| 788 | cout << "\nevaluating bsp view cells render time after merge ... ";
|
---|
[468] | 789 | mRenderSimulator->RenderScene();
|
---|
| 790 | SimulationStatistics ss;
|
---|
| 791 | mRenderSimulator->GetStatistics(ss);
|
---|
[474] | 792 |
|
---|
[452] | 793 | cout << " finished" << endl;
|
---|
| 794 | cout << ss << endl;
|
---|
| 795 | Debug << ss << endl;
|
---|
[468] | 796 |
|
---|
[434] | 797 | delete vssTree;
|
---|
[475] | 798 |
|
---|
[434] | 799 | return true;
|
---|
[466] | 800 | }
|
---|