[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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[574] | 29 |
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[490] | 30 | environment->GetBoolValue("VssPreprocessor.loadInitialSamples", mLoadInitialSamples);
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| 31 | environment->GetBoolValue("VssPreprocessor.storeInitialSamples", mStoreInitialSamples);
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[501] | 32 | environment->GetBoolValue("VssPreprocessor.useViewSpaceBox", mUseViewSpaceBox);
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[532] | 33 | environment->GetBoolValue("VssPreprocessor.testBeamSampling", mTestBeamSampling);
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[674] | 34 | environment->GetBoolValue("VssPreprocessor.enlargeViewSpace", mEnlargeViewSpace);
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[532] | 35 |
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[508] | 36 | useViewspacePlane = mUseViewSpaceBox; //hack
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[490] | 37 |
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[675] | 38 |
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| 39 | Debug << "*********** vss preprocessor options **************" << endl;
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| 40 | Debug << "use view space box=" << mUseViewSpaceBox << endl;
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| 41 | Debug << "enlarge view space=" << mEnlargeViewSpace << endl;
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| 42 | Debug << "detect empty view space=" << mDetectEmptyViewSpace << endl;
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| 43 |
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| 44 | Debug << "*********** end vss preprocessor options **************" << endl;
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| 45 |
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[372] | 46 | mStats.open("stats.log");
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| 47 | }
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| 48 |
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| 49 | VssPreprocessor::~VssPreprocessor()
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| 50 | {
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[674] | 51 | CLEAR_CONTAINER(mVssRays);
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| 52 | DEL_PTR(mViewSpaceBox);
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[372] | 53 | }
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| 54 |
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| 55 | void
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[468] | 56 | VssPreprocessor::SetupRay(Ray &ray,
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| 57 | const Vector3 &point,
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[434] | 58 | const Vector3 &direction
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| 59 | )
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[372] | 60 | {
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[466] | 61 | ray.Clear();
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[434] | 62 | // do not store anything else then intersections at the ray
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[374] | 63 | ray.Init(point, direction, Ray::LOCAL_RAY);
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[372] | 64 | }
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| 65 |
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[574] | 66 |
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| 67 | void
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| 68 | VssPreprocessor::CastRays(
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| 69 | SimpleRayContainer &rays,
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| 70 | VssRayContainer &vssRays
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| 71 | )
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| 72 | {
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| 73 | for (int i=0; i < rays.size(); i++)
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| 74 | CastRay(rays[i].mOrigin, rays[i].mDirection, vssRays);
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| 75 | }
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| 76 |
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| 77 |
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[386] | 78 | int
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[376] | 79 | VssPreprocessor::CastRay(
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[434] | 80 | Vector3 &viewPoint,
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| 81 | Vector3 &direction,
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| 82 | VssRayContainer &vssRays
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| 83 | )
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[372] | 84 | {
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[499] | 85 |
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| 86 | int hits = 0;
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[675] | 87 | static Ray ray;
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[499] | 88 |
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[675] | 89 | AxisAlignedBox3 box = mViewSpaceBox ? *mViewSpaceBox : mKdTree->GetBox();
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| 90 | AxisAlignedBox3 sbox = box;
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| 91 |
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| 92 | sbox.Enlarge(Vector3(-Limits::Small));
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| 93 |
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| 94 | if (!sbox.IsInside(viewPoint))
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| 95 | return 0;
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| 96 |
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| 97 | SetupRay(ray, viewPoint, direction);
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| 98 |
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| 99 | // cast ray to KD tree to find intersection with other objects
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| 100 | Intersectable *objectA, *objectB;
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| 101 | Vector3 pointA, pointB;
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| 102 | float bsize = Magnitude(box.Size());
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[499] | 103 |
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[589] | 104 | if (!mDetectEmptyViewSpace)
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[675] | 105 | ray.mFlags &= ~Ray::CULL_BACKFACES;
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[589] | 106 | else
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[675] | 107 | ray.mFlags |= Ray::CULL_BACKFACES;
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[589] | 108 |
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[675] | 109 | if (mKdTree->CastRay(ray))
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| 110 | {
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| 111 | objectA = ray.intersections[0].mObject;
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| 112 | pointA = ray.Extrap(ray.intersections[0].mT);
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| 113 | }
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| 114 | else
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| 115 | {
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| 116 | objectA = NULL;
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| 117 | // compute intersection with the scene bounding box
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| 118 | float tmin, tmax;
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| 119 | if (box.ComputeMinMaxT(ray, &tmin, &tmax) && tmin < tmax)
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| 120 | pointA = ray.Extrap(tmax);
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| 121 | else
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| 122 | return 0;
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| 123 | }
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[386] | 124 |
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[499] | 125 |
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[675] | 126 | if (mDetectEmptyViewSpace) {
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| 127 | SetupRay(ray, pointA, -direction);
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| 128 | } else
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| 129 | SetupRay(ray, viewPoint, -direction);
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[534] | 130 |
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[675] | 131 | if (!mDetectEmptyViewSpace)
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| 132 | ray.mFlags &= ~Ray::CULL_BACKFACES;
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| 133 | else
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| 134 | ray.mFlags |= Ray::CULL_BACKFACES;
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[589] | 135 |
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[675] | 136 | if (mKdTree->CastRay(ray))
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| 137 | {
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| 138 | objectB = ray.intersections[0].mObject;
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| 139 | pointB = ray.Extrap(ray.intersections[0].mT);
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| 140 | }
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| 141 | else
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| 142 | {
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| 143 | objectB = NULL;
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| 144 | float tmin, tmax;
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| 145 |
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| 146 | if (box.ComputeMinMaxT(ray, &tmin, &tmax) && tmin < tmax)
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| 147 | pointB = ray.Extrap(tmax);
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| 148 | else
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| 149 | return 0;
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| 150 | }
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[534] | 151 |
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[675] | 152 | // if (objectA == NULL && objectB != NULL) {
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| 153 | if (mDetectEmptyViewSpace)
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| 154 | {
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| 155 | // cast again to ensure that there is no objectA
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| 156 | SetupRay(ray, pointB, direction);
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| 157 | ray.mFlags |= Ray::CULL_BACKFACES;
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| 158 |
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| 159 | if (mKdTree->CastRay(ray))
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| 160 | {
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| 161 | objectA = ray.intersections[0].mObject;
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| 162 | pointA = ray.Extrap(ray.intersections[0].mT);
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| 163 | }
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[434] | 164 | }
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[534] | 165 |
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[499] | 166 |
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[675] | 167 | VssRay *vssRay = NULL;
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[386] | 168 |
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[675] | 169 | bool validSample = (objectA != objectB);
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| 170 |
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| 171 | if (0 && mDetectEmptyViewSpace)
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| 172 | {
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| 173 | // consider all samples valid
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| 174 | // check if the viewpoint lies on the line segment AB
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| 175 | if (Distance(pointA, pointB) <
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| 176 | Distance(viewPoint, pointA) + Distance(viewPoint, pointB) - Limits::Small)
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| 177 | {
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| 178 | validSample = false;
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| 179 | }
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[386] | 180 | }
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[499] | 181 |
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[675] | 182 | if (validSample)
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| 183 | {
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| 184 | if (objectA)
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| 185 | {
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| 186 | vssRay = new VssRay(pointB,
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| 187 | pointA,
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| 188 | objectB,
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| 189 | objectA,
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| 190 | mPass);
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| 191 | vssRays.push_back(vssRay);
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| 192 | hits ++;
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| 193 | }
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| 194 |
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| 195 | if (objectB)
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| 196 | {
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| 197 | vssRay = new VssRay(pointA,
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| 198 | pointB,
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| 199 | objectA,
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| 200 | objectB,
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| 201 | mPass);
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| 202 | vssRays.push_back(vssRay);
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| 203 | hits ++;
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| 204 | }
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[434] | 205 | }
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[499] | 206 |
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[675] | 207 | return hits;
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[372] | 208 | }
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| 209 |
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| 210 |
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[376] | 211 | Vector3
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[382] | 212 | VssPreprocessor::GetViewpoint(AxisAlignedBox3 *viewSpaceBox)
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[372] | 213 | {
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[434] | 214 | AxisAlignedBox3 box;
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[468] | 215 |
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[434] | 216 | if (viewSpaceBox)
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| 217 | box =*viewSpaceBox;
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[468] | 218 | else
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[434] | 219 | box = mKdTree->GetBox();
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[468] | 220 |
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[434] | 221 | // shrink the box in the y direction
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| 222 | return box.GetRandomPoint();
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[372] | 223 | }
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| 224 |
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[376] | 225 | Vector3
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[427] | 226 | VssPreprocessor::GetDirection(const Vector3 &viewpoint,
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[434] | 227 | AxisAlignedBox3 *viewSpaceBox
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| 228 | )
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[372] | 229 | {
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[434] | 230 | Vector3 point;
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[600] | 231 | if (!use2dSampling)
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| 232 | {
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| 233 | if (0)
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| 234 | {
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| 235 | Vector3 normal;
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| 236 | int i = Random((int)mObjects.size());
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| 237 | Intersectable *object = mObjects[i];
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| 238 | object->GetRandomSurfacePoint(point, normal);
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| 239 | }
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| 240 | else
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| 241 | point = mKdTree->GetBox().GetRandomPoint();
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[534] | 242 | // point = viewpoint + UniformRandomVector();
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[600] | 243 | }
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| 244 | else
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| 245 | {
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| 246 | AxisAlignedBox3 box;
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[534] | 247 |
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[600] | 248 | if (viewSpaceBox)
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| 249 | box =*viewSpaceBox;
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| 250 | else
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| 251 | box = mKdTree->GetBox();
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[468] | 252 |
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[600] | 253 | point = box.GetRandomPoint();
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| 254 | point.y = viewpoint.y;
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[434] | 255 | }
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[468] | 256 |
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[434] | 257 | return point - viewpoint;
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[372] | 258 | }
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| 259 |
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[401] | 260 | int
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[427] | 261 | VssPreprocessor::GenerateImportanceRays(VssTree *vssTree,
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[434] | 262 | const int desiredSamples,
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| 263 | SimpleRayContainer &rays
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| 264 | )
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[401] | 265 | {
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[434] | 266 | int num;
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| 267 | if (0) {
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| 268 | float minRayContribution;
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| 269 | float maxRayContribution;
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| 270 | float avgRayContribution;
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[468] | 271 |
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[434] | 272 | vssTree->GetRayContributionStatistics(minRayContribution,
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| 273 | maxRayContribution,
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| 274 | avgRayContribution);
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[468] | 275 |
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[434] | 276 | cout<<
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| 277 | "#MIN_RAY_CONTRIB\n"<<minRayContribution<<endl<<
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| 278 | "#MAX_RAY_CONTRIB\n"<<maxRayContribution<<endl<<
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| 279 | "#AVG_RAY_CONTRIB\n"<<avgRayContribution<<endl;
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[468] | 280 |
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[434] | 281 | float p = desiredSamples/(float)(avgRayContribution*vssTree->stat.Leaves());
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| 282 | num = vssTree->GenerateRays(p, rays);
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| 283 | } else {
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[534] | 284 | int leaves = vssTree->stat.Leaves();
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[434] | 285 | num = vssTree->GenerateRays(desiredSamples, leaves, rays);
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| 286 | }
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[468] | 287 |
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[434] | 288 | cout<<"Generated "<<num<<" rays."<<endl;
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[468] | 289 |
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[434] | 290 | return num;
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[427] | 291 | }
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[376] | 292 |
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| 293 |
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[427] | 294 | bool
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| 295 | VssPreprocessor::ExportRays(const char *filename,
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[434] | 296 | const VssRayContainer &vssRays,
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| 297 | const int number
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| 298 | )
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[427] | 299 | {
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[434] | 300 | cout<<"Exporting vss rays..."<<endl<<flush;
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[468] | 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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| 306 | exporter->SetFilled();
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| 307 | exporter->ExportScene(mSceneGraph->mRoot);
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| 308 | exporter->SetWireframe();
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[427] | 309 |
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[434] | 310 | if (mViewSpaceBox) {
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[438] | 311 | exporter->SetForcedMaterial(RgbColor(1,0,1));
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[434] | 312 | exporter->ExportBox(*mViewSpaceBox);
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| 313 | exporter->ResetForcedMaterial();
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| 314 | }
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[468] | 315 |
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[534] | 316 | VssRayContainer rays;
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| 317 | vssRays.SelectRays(number, rays);
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| 318 |
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[434] | 319 | exporter->ExportRays(rays, RgbColor(1, 0, 0));
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[468] | 320 |
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[434] | 321 | delete exporter;
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[401] | 322 |
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[434] | 323 | cout<<"done."<<endl<<flush;
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[427] | 324 |
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[434] | 325 | return true;
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[401] | 326 | }
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| 327 |
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| 328 |
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[372] | 329 | bool
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[434] | 330 | VssPreprocessor::ExportVssTree(char *filename,
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[438] | 331 | VssTree *tree,
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| 332 | const Vector3 &dir
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| 333 | )
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[434] | 334 | {
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| 335 | Exporter *exporter = Exporter::GetExporter(filename);
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| 336 | exporter->SetFilled();
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| 337 | exporter->ExportScene(mSceneGraph->mRoot);
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[438] | 338 | // exporter->SetWireframe();
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| 339 | bool result = exporter->ExportVssTree2( *tree, dir );
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[434] | 340 | delete exporter;
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| 341 | return result;
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| 342 | }
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| 343 |
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| 344 | bool
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[427] | 345 | VssPreprocessor::ExportVssTreeLeaf(char *filename,
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[434] | 346 | VssTree *tree,
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| 347 | VssTreeLeaf *leaf)
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[427] | 348 | {
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[434] | 349 | Exporter *exporter = NULL;
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| 350 | exporter = Exporter::GetExporter(filename);
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| 351 | exporter->SetWireframe();
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| 352 | exporter->ExportKdTree(*mKdTree);
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[468] | 353 |
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[434] | 354 | if (mViewSpaceBox) {
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| 355 | exporter->SetForcedMaterial(RgbColor(1,0,0));
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| 356 | exporter->ExportBox(*mViewSpaceBox);
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[427] | 357 | exporter->ResetForcedMaterial();
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[434] | 358 | }
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[468] | 359 |
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[434] | 360 | exporter->SetForcedMaterial(RgbColor(0,0,1));
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| 361 | exporter->ExportBox(tree->GetBBox(leaf));
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| 362 | exporter->ResetForcedMaterial();
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[468] | 363 |
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[434] | 364 | VssRayContainer rays[4];
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| 365 | for (int i=0; i < leaf->rays.size(); i++) {
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| 366 | int k = leaf->rays[i].GetRayClass();
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| 367 | rays[k].push_back(leaf->rays[i].mRay);
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| 368 | }
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[468] | 369 |
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[434] | 370 | // SOURCE RAY
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| 371 | exporter->ExportRays(rays[0], RgbColor(1, 0, 0));
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| 372 | // TERMINATION RAY
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| 373 | exporter->ExportRays(rays[1], RgbColor(1, 1, 1));
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| 374 | // PASSING_RAY
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| 375 | exporter->ExportRays(rays[2], RgbColor(1, 1, 0));
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| 376 | // CONTAINED_RAY
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| 377 | exporter->ExportRays(rays[3], RgbColor(0, 0, 1));
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[427] | 378 |
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[434] | 379 | delete exporter;
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| 380 | return true;
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[427] | 381 | }
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| 382 |
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| 383 | void
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| 384 | VssPreprocessor::ExportVssTreeLeaves(VssTree *tree, const int number)
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| 385 | {
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[434] | 386 | vector<VssTreeLeaf *> leaves;
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| 387 | tree->CollectLeaves(leaves);
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[427] | 388 |
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[434] | 389 | int num = 0;
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| 390 | int i;
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| 391 | float p = number / (float)leaves.size();
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| 392 | for (i=0; i < leaves.size(); i++) {
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| 393 | if (RandomValue(0,1) < p) {
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| 394 | char filename[64];
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| 395 | sprintf(filename, "vss-leaf-%04d.x3d", num);
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| 396 | ExportVssTreeLeaf(filename, tree, leaves[i]);
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| 397 | num++;
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[427] | 398 | }
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[434] | 399 | if (num >= number)
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| 400 | break;
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| 401 | }
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[427] | 402 | }
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[535] | 403 | #include "ViewCellBsp.h"
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[427] | 404 |
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[535] | 405 | void VssPreprocessor::TestBeamCasting(VssTree *tree,
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| 406 | ViewCellsManager *vm,
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| 407 | const ObjectContainer &objects)
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[530] | 408 | {
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[540] | 409 | //debuggerWidget = new GlDebuggerWidget(renderer);
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| 410 | // renderer->resize(640, 480);
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| 411 | //debuggerWidget->resize(640, 480);
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| 412 |
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[531] | 413 | vector<VssTreeLeaf *> leaves;
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| 414 | tree->CollectLeaves(leaves);
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[530] | 415 |
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[535] | 416 | Exporter *exporter = Exporter::GetExporter("shafts.x3d");
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| 417 |
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| 418 | exporter->SetWireframe();
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[540] | 419 | exporter->ExportGeometry(objects);
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[535] | 420 | exporter->SetFilled();
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| 421 | //Randomize();
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[540] | 422 | debuggerWidget = new GlDebuggerWidget(renderer);
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| 423 |
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| 424 | /*debuggerWidget->mBeam = beam;
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| 425 | debuggerWidget->mSourceObject = sourceObj;
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| 426 | debuggerWidget->mSamples = 10000;
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| 427 |
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| 428 | Debug << "showing window" << endl;
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| 429 | debuggerWidget->show();*/
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| 430 |
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| 431 | renderer->makeCurrent();
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| 432 |
|
---|
| 433 | for (int i = 0; i < 10; ++ i)
|
---|
[530] | 434 | {
|
---|
[540] | 435 | Beam beam;
|
---|
| 436 | Intersectable *sourceObj = mObjects[5];
|
---|
| 437 |
|
---|
[531] | 438 | const int index = (int)RandomValue(0, (Real)((int)leaves.size() - 1));
|
---|
| 439 | VssTreeLeaf *leaf = leaves[index];
|
---|
[530] | 440 |
|
---|
[535] | 441 | AxisAlignedBox3 dirBox = tree->GetDirBBox(leaf);
|
---|
[531] | 442 | AxisAlignedBox3 box = tree->GetBBox(leaf);
|
---|
[532] | 443 |
|
---|
[535] | 444 | beam.Construct(box, dirBox);
|
---|
[532] | 445 |
|
---|
| 446 | // collect kd leaves and view cells
|
---|
| 447 | mKdTree->CastBeam(beam);
|
---|
| 448 | vm->CastBeam(beam);
|
---|
| 449 |
|
---|
[577] | 450 | Debug << "found " << (int)beam.mViewCells.size() << " view cells and "
|
---|
| 451 | << (int)beam.mKdNodes.size() << " kd nodes" << endl;
|
---|
[532] | 452 |
|
---|
[530] | 453 | BeamSampleStatistics stats;
|
---|
[538] | 454 |
|
---|
[589] | 455 | renderer->SampleBeamContributions(sourceObj,
|
---|
| 456 | beam,
|
---|
| 457 | 200000,
|
---|
[531] | 458 | stats);
|
---|
[530] | 459 |
|
---|
[540] | 460 | char s[64]; sprintf(s, "shaft%04d.png", i);
|
---|
| 461 |
|
---|
| 462 | QImage image = renderer->toImage();
|
---|
| 463 | image.save(s, "PNG");
|
---|
[532] | 464 | Debug << "beam statistics: " << stats << endl << endl;
|
---|
[540] | 465 |
|
---|
| 466 | if (1)
|
---|
| 467 | {
|
---|
| 468 | AxisAlignedBox3 sbox = mSceneGraph->GetBox();
|
---|
| 469 | Vector3 bmin = sbox.Min() - 150.0f;
|
---|
| 470 | Vector3 bmax = sbox.Max() + 150.0f;
|
---|
| 471 | AxisAlignedBox3 vbox(bmin, bmax);
|
---|
[535] | 472 |
|
---|
[540] | 473 | exporter->ExportBeam(beam, vbox);
|
---|
| 474 | }
|
---|
[535] | 475 |
|
---|
[540] | 476 | bool exportViewCells = false;
|
---|
[535] | 477 |
|
---|
| 478 | if (exportViewCells)
|
---|
| 479 | {
|
---|
| 480 | ViewCellContainer::const_iterator it, it_end = beam.mViewCells.end();
|
---|
| 481 |
|
---|
| 482 | for (it = beam.mViewCells.begin(); it != beam.mViewCells.end(); ++ it)
|
---|
| 483 | {
|
---|
| 484 | BspNodeGeometry geom;
|
---|
| 485 | AxisAlignedBox3 vbox;
|
---|
| 486 | vbox.Initialize();
|
---|
[538] | 487 | vbox.Include((*it)->GetMesh());
|
---|
| 488 |
|
---|
| 489 | exporter->SetWireframe();
|
---|
[535] | 490 | exporter->ExportBox(vbox);
|
---|
[538] | 491 | exporter->SetFilled();
|
---|
| 492 | exporter->ExportViewCell(*it);
|
---|
[535] | 493 | }
|
---|
[538] | 494 |
|
---|
| 495 | /*vector<KdNode *>::const_iterator it, it_end = beam.mKdNodes.end();
|
---|
| 496 |
|
---|
| 497 | for (it = beam.mKdNodes.begin(); it != beam.mKdNodes.end(); ++ it)
|
---|
| 498 | {
|
---|
| 499 | exporter->ExportBox(mKdTree->GetBox((*it)));
|
---|
| 500 | }*/
|
---|
[535] | 501 | }
|
---|
[530] | 502 | }
|
---|
[540] | 503 | /*while (1)
|
---|
| 504 | { debuggerWidget->repaint();
|
---|
| 505 | };*/
|
---|
[535] | 506 | delete exporter;
|
---|
[530] | 507 | }
|
---|
| 508 |
|
---|
[540] | 509 |
|
---|
[434] | 510 | float
|
---|
| 511 | VssPreprocessor::GetAvgPvsSize(VssTree *tree,
|
---|
| 512 | const vector<AxisAlignedBox3> &viewcells
|
---|
| 513 | )
|
---|
| 514 | {
|
---|
| 515 | vector<AxisAlignedBox3>::const_iterator it, it_end = viewcells.end();
|
---|
| 516 |
|
---|
| 517 | int sum = 0;
|
---|
| 518 | for (it = viewcells.begin(); it != it_end; ++ it)
|
---|
| 519 | sum += tree->GetPvsSize(*it);
|
---|
[468] | 520 |
|
---|
[434] | 521 | return sum/(float)viewcells.size();
|
---|
| 522 | }
|
---|
| 523 |
|
---|
[427] | 524 | bool
|
---|
[372] | 525 | VssPreprocessor::ComputeVisibility()
|
---|
| 526 | {
|
---|
[579] | 527 | Debug << "type: vss" << endl;
|
---|
[468] | 528 |
|
---|
[372] | 529 | long startTime = GetTime();
|
---|
[468] | 530 |
|
---|
[372] | 531 | int totalSamples = 0;
|
---|
| 532 |
|
---|
| 533 |
|
---|
[434] | 534 | AxisAlignedBox3 *box = new AxisAlignedBox3(mKdTree->GetBox());
|
---|
[534] | 535 |
|
---|
[434] | 536 | if (!useViewspacePlane) {
|
---|
[446] | 537 | float size = 0.05f;
|
---|
[434] | 538 | float s = 0.5f - size;
|
---|
| 539 | float olds = Magnitude(box->Size());
|
---|
| 540 | box->Enlarge(box->Size()*Vector3(-s));
|
---|
| 541 | Vector3 translation = Vector3(-olds*0.1f, 0, 0);
|
---|
| 542 | box->SetMin(box->Min() + translation);
|
---|
| 543 | box->SetMax(box->Max() + translation);
|
---|
| 544 | } else {
|
---|
[468] | 545 |
|
---|
[434] | 546 | // sample city like heights
|
---|
[469] | 547 | box->SetMin(1, box->Min(1) + box->Size(1)*0.2f);
|
---|
| 548 | box->SetMax(1, box->Min(1) + box->Size(1)*0.3f);
|
---|
[434] | 549 | }
|
---|
[427] | 550 |
|
---|
[434] | 551 | if (use2dSampling)
|
---|
| 552 | box->SetMax(1, box->Min(1));
|
---|
[468] | 553 |
|
---|
[534] | 554 | cout<<"mUseViewSpaceBox="<<mUseViewSpaceBox<<endl;
|
---|
[579] | 555 |
|
---|
[675] | 556 |
|
---|
[501] | 557 | if (mUseViewSpaceBox)
|
---|
[487] | 558 | {
|
---|
[674] | 559 | if (!mEnlargeViewSpace)
|
---|
[654] | 560 | {
|
---|
[600] | 561 | mViewSpaceBox = box;
|
---|
[654] | 562 | }
|
---|
[598] | 563 | else
|
---|
| 564 | {
|
---|
| 565 | // HACK: enlarge in y directon
|
---|
| 566 | mViewSpaceBox = new AxisAlignedBox3(mKdTree->GetBox());
|
---|
[677] | 567 |
|
---|
| 568 | if (0) {
|
---|
[598] | 569 | //Vector3 pmin = mViewSpaceBox->Min();
|
---|
| 570 | Vector3 size = mViewSpaceBox->Size();
|
---|
| 571 | //size[1] *= 1.25;
|
---|
[600] | 572 | Vector3 enlarge(size[0] * 0.25f, size[1] * 0.0f, size[2] * 0.25f);
|
---|
[598] | 573 |
|
---|
| 574 | mViewSpaceBox->Enlarge(enlarge);
|
---|
[677] | 575 | } else {
|
---|
| 576 | // $$ JB temporary
|
---|
| 577 | AxisAlignedBox3 box = *mViewSpaceBox;
|
---|
| 578 | float s = box.Size(0);
|
---|
| 579 | box.Scale(0.8f);
|
---|
| 580 | box.SetMax(0, box.Max(0) + s*0.8f);
|
---|
| 581 | box.SetMin(0, box.Min(0) + s*0.8f);
|
---|
| 582 | *mViewSpaceBox = box;
|
---|
| 583 | }
|
---|
| 584 |
|
---|
[598] | 585 | }
|
---|
| 586 | //Debug << "view space box: " << *mViewSpaceBox << endl;
|
---|
[487] | 587 | }
|
---|
[434] | 588 | else
|
---|
[487] | 589 | {
|
---|
[579] | 590 | mViewSpaceBox = NULL;
|
---|
[487] | 591 | }
|
---|
[534] | 592 |
|
---|
[577] | 593 | AxisAlignedBox3 vbox = mViewSpaceBox ? *mViewSpaceBox : mKdTree->GetBox();
|
---|
| 594 |
|
---|
[590] | 595 | mSceneGraph->CollectObjects(&mObjects);
|
---|
| 596 |
|
---|
[518] | 597 | //-- load view cells from file if requested
|
---|
[577] | 598 | if (!mLoadViewCells)
|
---|
[574] | 599 | {
|
---|
[577] | 600 | mViewCellsManager->SetViewSpaceBox(vbox);
|
---|
[574] | 601 | // construct view cells using it's own set of samples
|
---|
| 602 | mViewCellsManager->Construct(this);
|
---|
[518] | 603 |
|
---|
[574] | 604 | //-- several visualizations and statistics
|
---|
[587] | 605 | Debug << "view cells construction finished: " << endl;
|
---|
[574] | 606 | mViewCellsManager->PrintStatistics(Debug);
|
---|
| 607 | }
|
---|
[590] | 608 | else
|
---|
[651] | 609 | {
|
---|
[590] | 610 | VssRayContainer dummies;
|
---|
| 611 | mViewCellsManager->Visualize(mObjects, dummies);
|
---|
| 612 | mViewCellsManager->ExportViewCells("test.xml");
|
---|
| 613 | }
|
---|
[401] | 614 |
|
---|
[651] | 615 | VssTree *vssTree = NULL;
|
---|
[590] | 616 |
|
---|
[468] | 617 |
|
---|
[490] | 618 | long initialTime = GetTime();
|
---|
[468] | 619 |
|
---|
[490] | 620 | if (mLoadInitialSamples)
|
---|
| 621 | {
|
---|
| 622 | cout << "Loading samples from file ... ";
|
---|
| 623 | LoadSamples(mVssRays, mObjects);
|
---|
| 624 | cout << "finished\n" << endl;
|
---|
| 625 | totalSamples = (int)mVssRays.size();
|
---|
| 626 | }
|
---|
| 627 | else
|
---|
| 628 | {
|
---|
[534] | 629 |
|
---|
| 630 | while (totalSamples < mInitialSamples) {
|
---|
[490] | 631 | int passContributingSamples = 0;
|
---|
| 632 | int passSampleContributions = 0;
|
---|
| 633 | int passSamples = 0;
|
---|
[468] | 634 |
|
---|
[490] | 635 | int index = 0;
|
---|
[468] | 636 |
|
---|
[490] | 637 | int sampleContributions;
|
---|
[468] | 638 |
|
---|
[490] | 639 | int s = Min(mSamplesPerPass, mInitialSamples);
|
---|
| 640 | for (int k=0; k < s; k++) {
|
---|
| 641 | // changed by matt
|
---|
| 642 | Vector3 viewpoint;
|
---|
[534] | 643 | // viewpoint = GetViewpoint(mViewSpaceBox);
|
---|
[490] | 644 | mViewCellsManager->GetViewPoint(viewpoint);
|
---|
| 645 | Vector3 direction = GetDirection(viewpoint, mViewSpaceBox);
|
---|
[534] | 646 |
|
---|
[490] | 647 | sampleContributions = CastRay(viewpoint, direction, mVssRays);
|
---|
[468] | 648 |
|
---|
[490] | 649 | if (sampleContributions) {
|
---|
| 650 | passContributingSamples ++;
|
---|
| 651 | passSampleContributions += sampleContributions;
|
---|
| 652 | }
|
---|
| 653 | passSamples++;
|
---|
| 654 | totalSamples++;
|
---|
| 655 | }
|
---|
[468] | 656 |
|
---|
[490] | 657 | mPass++;
|
---|
| 658 | int pvsSize = 0;
|
---|
| 659 | float avgRayContrib = (passContributingSamples > 0) ?
|
---|
| 660 | passSampleContributions/(float)passContributingSamples : 0;
|
---|
[468] | 661 |
|
---|
[490] | 662 | cout << "#Pass " << mPass << " : t = " << TimeDiff(startTime, GetTime())*1e-3 << "s" << endl;
|
---|
| 663 | cout << "#TotalSamples=" << totalSamples/1000
|
---|
[651] | 664 | << "#SampleContributions=" << passSampleContributions << " ("
|
---|
[490] | 665 | << 100*passContributingSamples/(float)passSamples<<"%)" << " avgPVS="
|
---|
| 666 | << pvsSize/(float)mObjects.size() << endl
|
---|
| 667 | << "avg ray contrib=" << avgRayContrib << endl;
|
---|
[468] | 668 |
|
---|
[490] | 669 | mStats <<
|
---|
| 670 | "#Pass\n" <<mPass<<endl<<
|
---|
| 671 | "#Time\n" << TimeDiff(startTime, GetTime())*1e-3 << endl<<
|
---|
| 672 | "#TotalSamples\n" << totalSamples<< endl<<
|
---|
| 673 | "#SampleContributions\n" << passSampleContributions << endl <<
|
---|
| 674 | "#PContributingSamples\n"<<100*passContributingSamples/(float)passSamples<<endl <<
|
---|
| 675 | "#AvgPVS\n"<< pvsSize/(float)mObjects.size() << endl <<
|
---|
| 676 | "#AvgRayContrib\n" << avgRayContrib << endl;
|
---|
| 677 | }
|
---|
| 678 |
|
---|
| 679 | cout << "#totalPvsSize=" << mKdTree->CollectLeafPvs() << endl;
|
---|
[534] | 680 |
|
---|
| 681 |
|
---|
| 682 |
|
---|
[490] | 683 | }
|
---|
[564] | 684 |
|
---|
| 685 |
|
---|
[490] | 686 | cout << "#totalRayStackSize=" << (int)mVssRays.size() << endl << flush;
|
---|
| 687 | Debug << (int)mVssRays.size() << " rays generated in "
|
---|
| 688 | << TimeDiff(initialTime, GetTime()) * 1e-3 << " seconds" << endl;
|
---|
[401] | 689 |
|
---|
[490] | 690 | if (mStoreInitialSamples)
|
---|
| 691 | {
|
---|
| 692 | cout << "Writing " << (int)mVssRays.size() << " samples to file ... ";
|
---|
[508] | 693 | ExportSamples(mVssRays);
|
---|
[490] | 694 | cout << "finished\n" << endl;
|
---|
[491] | 695 |
|
---|
| 696 | /*VssRayContainer dummyRays;
|
---|
| 697 | LoadSamples(dummyRays, mObjects);
|
---|
| 698 | Debug << "rays " << (int)mVssRays.size() << " " << dummyRays.size() << endl;
|
---|
| 699 |
|
---|
| 700 | for (int i = 0; i < (int)mVssRays.size(); ++ i)
|
---|
| 701 | {
|
---|
| 702 | Debug << mVssRays[i]->GetOrigin() << " " << mVssRays[i]->GetTermination() << " " << mVssRays[i]->mOriginObject << " " << mVssRays[i]->mTerminationObject << endl;
|
---|
| 703 | Debug << dummyRays[i]->GetOrigin() << " " << dummyRays[i]->GetTermination() << " " << dummyRays[i]->mOriginObject << " " << dummyRays[i]->mTerminationObject << endl << endl;
|
---|
| 704 | }*/
|
---|
[434] | 705 | }
|
---|
[468] | 706 |
|
---|
[534] | 707 |
|
---|
[677] | 708 | int numExportRays = 2000;
|
---|
| 709 | //int numExportRays = 0;
|
---|
[372] | 710 |
|
---|
[434] | 711 | if (numExportRays) {
|
---|
| 712 | char filename[64];
|
---|
| 713 | sprintf(filename, "vss-rays-initial.x3d");
|
---|
| 714 | ExportRays(filename, mVssRays, numExportRays);
|
---|
| 715 | }
|
---|
[468] | 716 |
|
---|
[434] | 717 | vssTree = new VssTree;
|
---|
| 718 | // viewcells = Construct(mVssRays);
|
---|
[468] | 719 |
|
---|
[434] | 720 | vssTree->Construct(mVssRays, mViewSpaceBox);
|
---|
| 721 | cout<<"VssTree root PVS size = "<<vssTree->GetRootPvsSize()<<endl;
|
---|
[468] | 722 |
|
---|
[465] | 723 | if (0)
|
---|
| 724 | {
|
---|
| 725 | ExportVssTree("vss-tree-100.x3d", vssTree, Vector3(1,0,0));
|
---|
| 726 | ExportVssTree("vss-tree-001.x3d", vssTree, Vector3(0,0,1));
|
---|
| 727 | ExportVssTree("vss-tree-101.x3d", vssTree, Vector3(1,0,1));
|
---|
| 728 | ExportVssTree("vss-tree-101m.x3d", vssTree, Vector3(-1,0,-1));
|
---|
| 729 | ExportVssTreeLeaves(vssTree, 10);
|
---|
| 730 | }
|
---|
[430] | 731 |
|
---|
[434] | 732 | // viewcells->UpdatePVS(newVssRays);
|
---|
| 733 | // get viewcells as kd tree boxes
|
---|
| 734 | vector<AxisAlignedBox3> kdViewcells;
|
---|
| 735 | if (0) {
|
---|
| 736 | vector<KdLeaf *> leaves;
|
---|
| 737 | mKdTree->CollectLeaves(leaves);
|
---|
| 738 | vector<KdLeaf *>::const_iterator it;
|
---|
| 739 | int targetLeaves = 50;
|
---|
| 740 | float prob = targetLeaves/(float)leaves.size();
|
---|
| 741 | for (it = leaves.begin(); it != leaves.end(); ++it)
|
---|
| 742 | if (RandomValue(0.0f,1.0f) < prob)
|
---|
| 743 | kdViewcells.push_back(mKdTree->GetBox(*it));
|
---|
[468] | 744 |
|
---|
[434] | 745 | float avgPvs = GetAvgPvsSize(vssTree, kdViewcells);
|
---|
| 746 | cout<<"Initial average PVS size = "<<avgPvs<<endl;
|
---|
| 747 | }
|
---|
| 748 |
|
---|
[468] | 749 |
|
---|
[434] | 750 | int samples = 0;
|
---|
| 751 | int pass = 0;
|
---|
[448] | 752 |
|
---|
[535] | 753 |
|
---|
[448] | 754 | // cast view cell samples
|
---|
[557] | 755 | while (samples < mVssSamples)
|
---|
| 756 | {
|
---|
| 757 |
|
---|
[434] | 758 | int num = mVssSamplesPerPass;
|
---|
| 759 | SimpleRayContainer rays;
|
---|
| 760 | VssRayContainer vssRays;
|
---|
[468] | 761 |
|
---|
[434] | 762 | if (!mUseImportanceSampling) {
|
---|
| 763 | for (int j=0; j < num; j++) {
|
---|
[487] | 764 | // changed by matt
|
---|
| 765 | //Vector3 viewpoint = GetViewpoint(mViewSpaceBox);
|
---|
| 766 | Vector3 viewpoint;
|
---|
| 767 | mViewCellsManager->GetViewPoint(viewpoint);
|
---|
[434] | 768 | Vector3 direction = GetDirection(viewpoint, mViewSpaceBox);
|
---|
| 769 | rays.push_back(SimpleRay(viewpoint, direction));
|
---|
| 770 | }
|
---|
| 771 | } else {
|
---|
| 772 | num = GenerateImportanceRays(vssTree, num, rays);
|
---|
| 773 | }
|
---|
[468] | 774 |
|
---|
[434] | 775 | for (int i=0; i < rays.size(); i++)
|
---|
| 776 | CastRay(rays[i].mOrigin, rays[i].mDirection, vssRays);
|
---|
[468] | 777 |
|
---|
[434] | 778 | vssTree->AddRays(vssRays);
|
---|
[468] | 779 |
|
---|
[434] | 780 | if (0) {
|
---|
| 781 | int subdivided = vssTree->UpdateSubdivision();
|
---|
| 782 | cout<<"subdivided leafs = "<<subdivided<<endl;
|
---|
| 783 | }
|
---|
[427] | 784 |
|
---|
[434] | 785 | float avgPvs = GetAvgPvsSize(vssTree, kdViewcells);
|
---|
| 786 | cout<<"Average PVS size = "<<avgPvs<<endl;
|
---|
[430] | 787 |
|
---|
[517] | 788 | /// compute view cell contribution of rays
|
---|
[574] | 789 | mViewCellsManager->ComputeSampleContributions(vssRays, true, false);
|
---|
[517] | 790 |
|
---|
[434] | 791 | if (numExportRays) {
|
---|
| 792 | char filename[64];
|
---|
| 793 | if (mUseImportanceSampling)
|
---|
| 794 | sprintf(filename, "vss-rays-i%04d.x3d", pass);
|
---|
| 795 | else
|
---|
| 796 | sprintf(filename, "vss-rays-%04d.x3d", pass);
|
---|
[468] | 797 |
|
---|
[434] | 798 | ExportRays(filename, vssRays, numExportRays);
|
---|
[401] | 799 | }
|
---|
[386] | 800 |
|
---|
[434] | 801 | samples+=num;
|
---|
| 802 | float pvs = vssTree->GetAvgPvsSize();
|
---|
| 803 | cout<<"*****************************\n";
|
---|
| 804 | cout<<samples<<" avgPVS ="<<pvs<<endl;
|
---|
| 805 | cout<<"VssTree root PVS size = "<<vssTree->GetRootPvsSize()<<endl;
|
---|
| 806 | cout<<"*****************************\n";
|
---|
[557] | 807 | // if (samples >= mVssSamples) break;
|
---|
| 808 | pass ++;
|
---|
[434] | 809 | }
|
---|
[448] | 810 |
|
---|
[574] | 811 | if (mTestBeamSampling && mUseGlRenderer)
|
---|
| 812 | {
|
---|
| 813 | TestBeamCasting(vssTree, mViewCellsManager, mObjects);
|
---|
[553] | 814 | }
|
---|
| 815 |
|
---|
[587] | 816 | if (0)
|
---|
| 817 | Debug << vssTree->stat << endl;
|
---|
[468] | 818 |
|
---|
[574] | 819 | if (0)
|
---|
| 820 | {
|
---|
| 821 | VssRayContainer viewCellRays;
|
---|
[517] | 822 |
|
---|
[574] | 823 | // compute rays used for view cells construction
|
---|
| 824 | const int numRays = mViewCellsManager->GetVisualizationSamples();
|
---|
[468] | 825 |
|
---|
[574] | 826 | vssTree->CollectRays(viewCellRays, numRays);
|
---|
[540] | 827 | }
|
---|
[535] | 828 |
|
---|
[452] | 829 | //-- render simulation after merge
|
---|
[574] | 830 | cout << "\nevaluating bsp view cells render time after sampling ... ";
|
---|
[605] | 831 | Debug << "\nStatistics after sampling: " << endl;
|
---|
| 832 |
|
---|
[468] | 833 | mRenderSimulator->RenderScene();
|
---|
| 834 | SimulationStatistics ss;
|
---|
| 835 | mRenderSimulator->GetStatistics(ss);
|
---|
[474] | 836 |
|
---|
[452] | 837 | cout << " finished" << endl;
|
---|
| 838 | cout << ss << endl;
|
---|
| 839 | Debug << ss << endl;
|
---|
[468] | 840 |
|
---|
[434] | 841 | delete vssTree;
|
---|
[475] | 842 |
|
---|
[434] | 843 | return true;
|
---|
[466] | 844 | }
|
---|