[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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[685] | 15 | #include "ViewCellBsp.h"
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[372] | 16 |
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[863] | 17 | namespace GtpVisibilityPreprocessor {
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[860] | 18 |
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[427] | 19 | bool use2dSampling = false;
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[534] | 20 | bool useViewspacePlane = false;
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[427] | 21 |
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[372] | 22 | VssPreprocessor::VssPreprocessor():
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[434] | 23 | mPass(0),
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[1002] | 24 | mVssRays(),
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| 25 | mViewSpaceBox(NULL)
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[372] | 26 | {
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| 27 | // this should increase coherence of the samples
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[1004] | 28 | Environment::GetSingleton()->GetIntValue("VssPreprocessor.samplesPerPass", mSamplesPerPass);
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| 29 | Environment::GetSingleton()->GetIntValue("VssPreprocessor.initialSamples", mInitialSamples);
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| 30 | Environment::GetSingleton()->GetIntValue("VssPreprocessor.vssSamples", mVssSamples);
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| 31 | Environment::GetSingleton()->GetIntValue("VssPreprocessor.vssSamplesPerPass", mVssSamplesPerPass);
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| 32 | Environment::GetSingleton()->GetBoolValue("VssPreprocessor.useImportanceSampling", mUseImportanceSampling);
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[574] | 33 |
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[1004] | 34 | Environment::GetSingleton()->GetBoolValue("VssPreprocessor.loadInitialSamples", mLoadInitialSamples);
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| 35 | Environment::GetSingleton()->GetBoolValue("VssPreprocessor.storeInitialSamples", mStoreInitialSamples);
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| 36 | Environment::GetSingleton()->GetBoolValue("VssPreprocessor.useViewSpaceBox", mUseViewSpaceBox);
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| 37 | Environment::GetSingleton()->GetBoolValue("VssPreprocessor.testBeamSampling", mTestBeamSampling);
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| 38 | Environment::GetSingleton()->GetBoolValue("VssPreprocessor.enlargeViewSpace", mEnlargeViewSpace);
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| 39 | Environment::GetSingleton()->GetBoolValue("Preprocessor.detectEmptyViewSpace", mDetectEmptyViewSpace);
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[694] | 40 |
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[508] | 41 | useViewspacePlane = mUseViewSpaceBox; //hack
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[490] | 42 |
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[675] | 43 |
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| 44 | Debug << "*********** vss preprocessor options **************" << endl;
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| 45 | Debug << "use view space box=" << mUseViewSpaceBox << endl;
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| 46 | Debug << "enlarge view space=" << mEnlargeViewSpace << endl;
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| 47 | Debug << "*********** end vss preprocessor options **************" << endl;
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| 48 |
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[372] | 49 | mStats.open("stats.log");
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| 50 | }
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| 51 |
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[685] | 52 |
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[372] | 53 | VssPreprocessor::~VssPreprocessor()
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| 54 | {
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[674] | 55 | CLEAR_CONTAINER(mVssRays);
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| 56 | DEL_PTR(mViewSpaceBox);
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[372] | 57 | }
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| 58 |
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[685] | 59 |
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[372] | 60 | void
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[468] | 61 | VssPreprocessor::SetupRay(Ray &ray,
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| 62 | const Vector3 &point,
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[434] | 63 | const Vector3 &direction
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| 64 | )
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[372] | 65 | {
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[466] | 66 | ray.Clear();
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[434] | 67 | // do not store anything else then intersections at the ray
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[374] | 68 | ray.Init(point, direction, Ray::LOCAL_RAY);
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[372] | 69 | }
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| 70 |
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[574] | 71 |
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| 72 | void
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| 73 | VssPreprocessor::CastRays(
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| 74 | SimpleRayContainer &rays,
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| 75 | VssRayContainer &vssRays
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| 76 | )
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| 77 | {
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| 78 | for (int i=0; i < rays.size(); i++)
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| 79 | CastRay(rays[i].mOrigin, rays[i].mDirection, vssRays);
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| 80 | }
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| 81 |
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| 82 |
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[386] | 83 | int
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[376] | 84 | VssPreprocessor::CastRay(
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[434] | 85 | Vector3 &viewPoint,
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| 86 | Vector3 &direction,
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| 87 | VssRayContainer &vssRays
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| 88 | )
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[372] | 89 | {
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[499] | 90 |
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| 91 | int hits = 0;
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[675] | 92 | static Ray ray;
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[499] | 93 |
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[675] | 94 | AxisAlignedBox3 box = mViewSpaceBox ? *mViewSpaceBox : mKdTree->GetBox();
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| 95 | AxisAlignedBox3 sbox = box;
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| 96 |
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| 97 | sbox.Enlarge(Vector3(-Limits::Small));
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| 98 |
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| 99 | if (!sbox.IsInside(viewPoint))
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| 100 | return 0;
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| 101 |
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| 102 | SetupRay(ray, viewPoint, direction);
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| 103 |
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| 104 | // cast ray to KD tree to find intersection with other objects
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| 105 | Intersectable *objectA, *objectB;
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[767] | 106 |
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[694] | 107 | Vector3 pointA;
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| 108 | Vector3 pointB;
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| 109 |
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[767] | 110 | //float bsize = Magnitude(box.Size());
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[499] | 111 |
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[589] | 112 | if (!mDetectEmptyViewSpace)
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[675] | 113 | ray.mFlags &= ~Ray::CULL_BACKFACES;
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[589] | 114 | else
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[675] | 115 | ray.mFlags |= Ray::CULL_BACKFACES;
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[589] | 116 |
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[675] | 117 | if (mKdTree->CastRay(ray))
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| 118 | {
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| 119 | objectA = ray.intersections[0].mObject;
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| 120 | pointA = ray.Extrap(ray.intersections[0].mT);
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| 121 | }
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| 122 | else
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| 123 | {
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| 124 | objectA = NULL;
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| 125 | // compute intersection with the scene bounding box
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| 126 | float tmin, tmax;
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| 127 | if (box.ComputeMinMaxT(ray, &tmin, &tmax) && tmin < tmax)
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| 128 | pointA = ray.Extrap(tmax);
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| 129 | else
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| 130 | return 0;
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| 131 | }
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[386] | 132 |
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[694] | 133 | // matt: point A could be undefined?
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| 134 | if (1 && mDetectEmptyViewSpace) {
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[675] | 135 | SetupRay(ray, pointA, -direction);
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| 136 | } else
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| 137 | SetupRay(ray, viewPoint, -direction);
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[534] | 138 |
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[675] | 139 | if (!mDetectEmptyViewSpace)
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| 140 | ray.mFlags &= ~Ray::CULL_BACKFACES;
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| 141 | else
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| 142 | ray.mFlags |= Ray::CULL_BACKFACES;
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[589] | 143 |
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[675] | 144 | if (mKdTree->CastRay(ray))
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| 145 | {
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| 146 | objectB = ray.intersections[0].mObject;
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| 147 | pointB = ray.Extrap(ray.intersections[0].mT);
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| 148 | }
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| 149 | else
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| 150 | {
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| 151 | objectB = NULL;
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| 152 | float tmin, tmax;
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| 153 |
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| 154 | if (box.ComputeMinMaxT(ray, &tmin, &tmax) && tmin < tmax)
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| 155 | pointB = ray.Extrap(tmax);
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| 156 | else
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| 157 | return 0;
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| 158 | }
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[534] | 159 |
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[694] | 160 | //bool thesame = objectA && (objectA == objectB);
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| 161 |
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[675] | 162 | // if (objectA == NULL && objectB != NULL) {
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[694] | 163 | if (1 && mDetectEmptyViewSpace)
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[675] | 164 | {
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| 165 | // cast again to ensure that there is no objectA
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| 166 | SetupRay(ray, pointB, direction);
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[693] | 167 | ray.mFlags |= Ray::CULL_BACKFACES;
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[675] | 168 |
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| 169 | if (mKdTree->CastRay(ray))
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| 170 | {
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| 171 | objectA = ray.intersections[0].mObject;
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| 172 | pointA = ray.Extrap(ray.intersections[0].mT);
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| 173 | }
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[434] | 174 | }
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[534] | 175 |
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[499] | 176 |
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[675] | 177 | VssRay *vssRay = NULL;
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[386] | 178 |
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[675] | 179 | bool validSample = (objectA != objectB);
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[694] | 180 |
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| 181 | //if (validSample && thesame) Debug << "warning!!" << endl;
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[675] | 182 |
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| 183 | if (0 && mDetectEmptyViewSpace)
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| 184 | {
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| 185 | // consider all samples valid
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| 186 | // check if the viewpoint lies on the line segment AB
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| 187 | if (Distance(pointA, pointB) <
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| 188 | Distance(viewPoint, pointA) + Distance(viewPoint, pointB) - Limits::Small)
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| 189 | {
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| 190 | validSample = false;
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| 191 | }
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[386] | 192 | }
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[499] | 193 |
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[675] | 194 | if (validSample)
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| 195 | {
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| 196 | if (objectA)
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| 197 | {
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| 198 | vssRay = new VssRay(pointB,
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| 199 | pointA,
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| 200 | objectB,
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| 201 | objectA,
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| 202 | mPass);
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| 203 | vssRays.push_back(vssRay);
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| 204 | hits ++;
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| 205 | }
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| 206 |
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| 207 | if (objectB)
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| 208 | {
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| 209 | vssRay = new VssRay(pointA,
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| 210 | pointB,
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| 211 | objectA,
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| 212 | objectB,
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| 213 | mPass);
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| 214 | vssRays.push_back(vssRay);
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| 215 | hits ++;
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| 216 | }
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[434] | 217 | }
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[499] | 218 |
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[675] | 219 | return hits;
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[372] | 220 | }
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| 221 |
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| 222 |
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[376] | 223 | Vector3
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[382] | 224 | VssPreprocessor::GetViewpoint(AxisAlignedBox3 *viewSpaceBox)
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[372] | 225 | {
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[434] | 226 | AxisAlignedBox3 box;
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[468] | 227 |
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[434] | 228 | if (viewSpaceBox)
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| 229 | box =*viewSpaceBox;
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[468] | 230 | else
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[434] | 231 | box = mKdTree->GetBox();
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[468] | 232 |
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[434] | 233 | // shrink the box in the y direction
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| 234 | return box.GetRandomPoint();
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[372] | 235 | }
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| 236 |
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[376] | 237 | Vector3
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[427] | 238 | VssPreprocessor::GetDirection(const Vector3 &viewpoint,
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[434] | 239 | AxisAlignedBox3 *viewSpaceBox
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| 240 | )
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[372] | 241 | {
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[434] | 242 | Vector3 point;
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[600] | 243 | if (!use2dSampling)
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| 244 | {
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| 245 | if (0)
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| 246 | {
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| 247 | Vector3 normal;
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| 248 | int i = Random((int)mObjects.size());
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| 249 | Intersectable *object = mObjects[i];
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| 250 | object->GetRandomSurfacePoint(point, normal);
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| 251 | }
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| 252 | else
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| 253 | point = mKdTree->GetBox().GetRandomPoint();
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[534] | 254 | // point = viewpoint + UniformRandomVector();
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[600] | 255 | }
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| 256 | else
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| 257 | {
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| 258 | AxisAlignedBox3 box;
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[534] | 259 |
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[600] | 260 | if (viewSpaceBox)
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| 261 | box =*viewSpaceBox;
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| 262 | else
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| 263 | box = mKdTree->GetBox();
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[468] | 264 |
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[600] | 265 | point = box.GetRandomPoint();
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| 266 | point.y = viewpoint.y;
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[434] | 267 | }
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[468] | 268 |
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[434] | 269 | return point - viewpoint;
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[372] | 270 | }
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| 271 |
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[401] | 272 | int
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[427] | 273 | VssPreprocessor::GenerateImportanceRays(VssTree *vssTree,
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[434] | 274 | const int desiredSamples,
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| 275 | SimpleRayContainer &rays
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| 276 | )
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[401] | 277 | {
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[434] | 278 | int num;
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| 279 | if (0) {
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| 280 | float minRayContribution;
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| 281 | float maxRayContribution;
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| 282 | float avgRayContribution;
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[468] | 283 |
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[434] | 284 | vssTree->GetRayContributionStatistics(minRayContribution,
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| 285 | maxRayContribution,
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| 286 | avgRayContribution);
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[468] | 287 |
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[434] | 288 | cout<<
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| 289 | "#MIN_RAY_CONTRIB\n"<<minRayContribution<<endl<<
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| 290 | "#MAX_RAY_CONTRIB\n"<<maxRayContribution<<endl<<
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| 291 | "#AVG_RAY_CONTRIB\n"<<avgRayContribution<<endl;
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[468] | 292 |
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[434] | 293 | float p = desiredSamples/(float)(avgRayContribution*vssTree->stat.Leaves());
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| 294 | num = vssTree->GenerateRays(p, rays);
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| 295 | } else {
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[534] | 296 | int leaves = vssTree->stat.Leaves();
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[434] | 297 | num = vssTree->GenerateRays(desiredSamples, leaves, rays);
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| 298 | }
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[468] | 299 |
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[434] | 300 | cout<<"Generated "<<num<<" rays."<<endl;
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[468] | 301 |
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[434] | 302 | return num;
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[427] | 303 | }
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[376] | 304 |
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| 305 |
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[427] | 306 | bool
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| 307 | VssPreprocessor::ExportRays(const char *filename,
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[434] | 308 | const VssRayContainer &vssRays,
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| 309 | const int number
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| 310 | )
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[427] | 311 | {
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[434] | 312 | cout<<"Exporting vss rays..."<<endl<<flush;
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[468] | 313 |
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[434] | 314 | Exporter *exporter = NULL;
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| 315 | exporter = Exporter::GetExporter(filename);
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[1074] | 316 | exporter->SetWireframe();
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| 317 | exporter->ExportKdTree(*mKdTree);
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[434] | 318 | exporter->SetFilled();
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| 319 | exporter->ExportScene(mSceneGraph->mRoot);
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| 320 | exporter->SetWireframe();
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[427] | 321 |
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[434] | 322 | if (mViewSpaceBox) {
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[438] | 323 | exporter->SetForcedMaterial(RgbColor(1,0,1));
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[434] | 324 | exporter->ExportBox(*mViewSpaceBox);
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| 325 | exporter->ResetForcedMaterial();
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| 326 | }
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[468] | 327 |
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[534] | 328 | VssRayContainer rays;
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| 329 | vssRays.SelectRays(number, rays);
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| 330 |
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[685] | 331 | //exporter->ExportRays(rays, RgbColor(1, 0, 0));
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[468] | 332 |
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[434] | 333 | delete exporter;
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[401] | 334 |
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[434] | 335 | cout<<"done."<<endl<<flush;
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[427] | 336 |
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[434] | 337 | return true;
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[401] | 338 | }
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| 339 |
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| 340 |
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[372] | 341 | bool
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[434] | 342 | VssPreprocessor::ExportVssTree(char *filename,
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[438] | 343 | VssTree *tree,
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| 344 | const Vector3 &dir
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| 345 | )
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[434] | 346 | {
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| 347 | Exporter *exporter = Exporter::GetExporter(filename);
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| 348 | exporter->SetFilled();
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| 349 | exporter->ExportScene(mSceneGraph->mRoot);
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[438] | 350 | // exporter->SetWireframe();
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| 351 | bool result = exporter->ExportVssTree2( *tree, dir );
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[434] | 352 | delete exporter;
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| 353 | return result;
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| 354 | }
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| 355 |
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| 356 | bool
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[427] | 357 | VssPreprocessor::ExportVssTreeLeaf(char *filename,
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[434] | 358 | VssTree *tree,
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| 359 | VssTreeLeaf *leaf)
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[427] | 360 | {
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[434] | 361 | Exporter *exporter = NULL;
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| 362 | exporter = Exporter::GetExporter(filename);
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| 363 | exporter->SetWireframe();
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| 364 | exporter->ExportKdTree(*mKdTree);
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[468] | 365 |
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[434] | 366 | if (mViewSpaceBox) {
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| 367 | exporter->SetForcedMaterial(RgbColor(1,0,0));
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| 368 | exporter->ExportBox(*mViewSpaceBox);
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[427] | 369 | exporter->ResetForcedMaterial();
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[434] | 370 | }
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[468] | 371 |
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[434] | 372 | exporter->SetForcedMaterial(RgbColor(0,0,1));
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| 373 | exporter->ExportBox(tree->GetBBox(leaf));
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| 374 | exporter->ResetForcedMaterial();
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[468] | 375 |
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[434] | 376 | VssRayContainer rays[4];
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| 377 | for (int i=0; i < leaf->rays.size(); i++) {
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| 378 | int k = leaf->rays[i].GetRayClass();
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| 379 | rays[k].push_back(leaf->rays[i].mRay);
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| 380 | }
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[468] | 381 |
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[434] | 382 | // SOURCE RAY
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| 383 | exporter->ExportRays(rays[0], RgbColor(1, 0, 0));
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| 384 | // TERMINATION RAY
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| 385 | exporter->ExportRays(rays[1], RgbColor(1, 1, 1));
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| 386 | // PASSING_RAY
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| 387 | exporter->ExportRays(rays[2], RgbColor(1, 1, 0));
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| 388 | // CONTAINED_RAY
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| 389 | exporter->ExportRays(rays[3], RgbColor(0, 0, 1));
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[427] | 390 |
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[434] | 391 | delete exporter;
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| 392 | return true;
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[427] | 393 | }
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| 394 |
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| 395 | void
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| 396 | VssPreprocessor::ExportVssTreeLeaves(VssTree *tree, const int number)
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| 397 | {
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[434] | 398 | vector<VssTreeLeaf *> leaves;
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| 399 | tree->CollectLeaves(leaves);
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[427] | 400 |
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[434] | 401 | int num = 0;
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| 402 | int i;
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| 403 | float p = number / (float)leaves.size();
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| 404 | for (i=0; i < leaves.size(); i++) {
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| 405 | if (RandomValue(0,1) < p) {
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| 406 | char filename[64];
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| 407 | sprintf(filename, "vss-leaf-%04d.x3d", num);
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| 408 | ExportVssTreeLeaf(filename, tree, leaves[i]);
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| 409 | num++;
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[427] | 410 | }
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[434] | 411 | if (num >= number)
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| 412 | break;
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| 413 | }
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[427] | 414 | }
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| 415 |
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[685] | 416 |
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[535] | 417 | void VssPreprocessor::TestBeamCasting(VssTree *tree,
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| 418 | ViewCellsManager *vm,
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| 419 | const ObjectContainer &objects)
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[530] | 420 | {
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[540] | 421 | //debuggerWidget = new GlDebuggerWidget(renderer);
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| 422 | // renderer->resize(640, 480);
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| 423 | //debuggerWidget->resize(640, 480);
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| 424 |
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[531] | 425 | vector<VssTreeLeaf *> leaves;
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| 426 | tree->CollectLeaves(leaves);
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[530] | 427 |
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[535] | 428 | Exporter *exporter = Exporter::GetExporter("shafts.x3d");
|
---|
| 429 |
|
---|
| 430 | exporter->SetWireframe();
|
---|
[540] | 431 | exporter->ExportGeometry(objects);
|
---|
[535] | 432 | exporter->SetFilled();
|
---|
| 433 | //Randomize();
|
---|
[1145] | 434 | // §§matt
|
---|
| 435 | // debuggerWidget = new GlDebuggerWidget(renderer);
|
---|
[540] | 436 |
|
---|
| 437 | /*debuggerWidget->mBeam = beam;
|
---|
| 438 | debuggerWidget->mSourceObject = sourceObj;
|
---|
| 439 | debuggerWidget->mSamples = 10000;
|
---|
| 440 |
|
---|
| 441 | Debug << "showing window" << endl;
|
---|
[1145] | 442 | debuggerWidget->show();
|
---|
[540] | 443 |
|
---|
[1145] | 444 | renderer->makeCurrent();*/
|
---|
[540] | 445 |
|
---|
| 446 | for (int i = 0; i < 10; ++ i)
|
---|
[530] | 447 | {
|
---|
[540] | 448 | Beam beam;
|
---|
| 449 | Intersectable *sourceObj = mObjects[5];
|
---|
| 450 |
|
---|
[531] | 451 | const int index = (int)RandomValue(0, (Real)((int)leaves.size() - 1));
|
---|
| 452 | VssTreeLeaf *leaf = leaves[index];
|
---|
[530] | 453 |
|
---|
[535] | 454 | AxisAlignedBox3 dirBox = tree->GetDirBBox(leaf);
|
---|
[531] | 455 | AxisAlignedBox3 box = tree->GetBBox(leaf);
|
---|
[532] | 456 |
|
---|
[535] | 457 | beam.Construct(box, dirBox);
|
---|
[532] | 458 |
|
---|
| 459 | // collect kd leaves and view cells
|
---|
| 460 | mKdTree->CastBeam(beam);
|
---|
| 461 | vm->CastBeam(beam);
|
---|
| 462 |
|
---|
[577] | 463 | Debug << "found " << (int)beam.mViewCells.size() << " view cells and "
|
---|
| 464 | << (int)beam.mKdNodes.size() << " kd nodes" << endl;
|
---|
[532] | 465 |
|
---|
[530] | 466 | BeamSampleStatistics stats;
|
---|
[1145] | 467 | // §§matt
|
---|
| 468 | /* renderer->SampleBeamContributions(sourceObj,
|
---|
[589] | 469 | beam,
|
---|
| 470 | 200000,
|
---|
[531] | 471 | stats);
|
---|
[530] | 472 |
|
---|
[540] | 473 | char s[64]; sprintf(s, "shaft%04d.png", i);
|
---|
| 474 |
|
---|
| 475 | QImage image = renderer->toImage();
|
---|
| 476 | image.save(s, "PNG");
|
---|
[532] | 477 | Debug << "beam statistics: " << stats << endl << endl;
|
---|
[1145] | 478 | */
|
---|
[540] | 479 | if (1)
|
---|
| 480 | {
|
---|
| 481 | AxisAlignedBox3 sbox = mSceneGraph->GetBox();
|
---|
| 482 | Vector3 bmin = sbox.Min() - 150.0f;
|
---|
| 483 | Vector3 bmax = sbox.Max() + 150.0f;
|
---|
| 484 | AxisAlignedBox3 vbox(bmin, bmax);
|
---|
[535] | 485 |
|
---|
[540] | 486 | exporter->ExportBeam(beam, vbox);
|
---|
| 487 | }
|
---|
[535] | 488 |
|
---|
[540] | 489 | bool exportViewCells = false;
|
---|
[535] | 490 |
|
---|
| 491 | if (exportViewCells)
|
---|
| 492 | {
|
---|
| 493 | ViewCellContainer::const_iterator it, it_end = beam.mViewCells.end();
|
---|
| 494 |
|
---|
| 495 | for (it = beam.mViewCells.begin(); it != beam.mViewCells.end(); ++ it)
|
---|
| 496 | {
|
---|
| 497 | BspNodeGeometry geom;
|
---|
| 498 | AxisAlignedBox3 vbox;
|
---|
| 499 | vbox.Initialize();
|
---|
[538] | 500 | vbox.Include((*it)->GetMesh());
|
---|
| 501 |
|
---|
| 502 | exporter->SetWireframe();
|
---|
[535] | 503 | exporter->ExportBox(vbox);
|
---|
[538] | 504 | exporter->SetFilled();
|
---|
| 505 | exporter->ExportViewCell(*it);
|
---|
[535] | 506 | }
|
---|
[538] | 507 |
|
---|
| 508 | /*vector<KdNode *>::const_iterator it, it_end = beam.mKdNodes.end();
|
---|
| 509 |
|
---|
| 510 | for (it = beam.mKdNodes.begin(); it != beam.mKdNodes.end(); ++ it)
|
---|
| 511 | {
|
---|
| 512 | exporter->ExportBox(mKdTree->GetBox((*it)));
|
---|
| 513 | }*/
|
---|
[535] | 514 | }
|
---|
[530] | 515 | }
|
---|
[540] | 516 | /*while (1)
|
---|
| 517 | { debuggerWidget->repaint();
|
---|
| 518 | };*/
|
---|
[535] | 519 | delete exporter;
|
---|
[530] | 520 | }
|
---|
| 521 |
|
---|
[540] | 522 |
|
---|
[434] | 523 | float
|
---|
| 524 | VssPreprocessor::GetAvgPvsSize(VssTree *tree,
|
---|
| 525 | const vector<AxisAlignedBox3> &viewcells
|
---|
| 526 | )
|
---|
| 527 | {
|
---|
| 528 | vector<AxisAlignedBox3>::const_iterator it, it_end = viewcells.end();
|
---|
| 529 |
|
---|
| 530 | int sum = 0;
|
---|
| 531 | for (it = viewcells.begin(); it != it_end; ++ it)
|
---|
| 532 | sum += tree->GetPvsSize(*it);
|
---|
[468] | 533 |
|
---|
[434] | 534 | return sum/(float)viewcells.size();
|
---|
| 535 | }
|
---|
| 536 |
|
---|
[427] | 537 | bool
|
---|
[372] | 538 | VssPreprocessor::ComputeVisibility()
|
---|
| 539 | {
|
---|
[579] | 540 | Debug << "type: vss" << endl;
|
---|
[468] | 541 |
|
---|
[372] | 542 | long startTime = GetTime();
|
---|
[468] | 543 |
|
---|
[372] | 544 | int totalSamples = 0;
|
---|
| 545 |
|
---|
| 546 |
|
---|
[1002] | 547 | AxisAlignedBox3 box(mKdTree->GetBox());
|
---|
[534] | 548 |
|
---|
[434] | 549 | if (!useViewspacePlane) {
|
---|
[446] | 550 | float size = 0.05f;
|
---|
[434] | 551 | float s = 0.5f - size;
|
---|
[1002] | 552 | float olds = Magnitude(box.Size());
|
---|
| 553 | box.Enlarge(box.Size()*Vector3(-s));
|
---|
[434] | 554 | Vector3 translation = Vector3(-olds*0.1f, 0, 0);
|
---|
[1002] | 555 | box.SetMin(box.Min() + translation);
|
---|
| 556 | box.SetMax(box.Max() + translation);
|
---|
[434] | 557 | } else {
|
---|
[468] | 558 |
|
---|
[434] | 559 | // sample city like heights
|
---|
[1002] | 560 | box.SetMin(1, box.Min(1) + box.Size(1)*0.2f);
|
---|
| 561 | box.SetMax(1, box.Min(1) + box.Size(1)*0.3f);
|
---|
[434] | 562 | }
|
---|
[427] | 563 |
|
---|
[434] | 564 | if (use2dSampling)
|
---|
[1002] | 565 | box.SetMax(1, box.Min(1));
|
---|
[468] | 566 |
|
---|
[1052] | 567 | cout << "use view space box=" << mUseViewSpaceBox<<endl;
|
---|
[579] | 568 |
|
---|
[1076] | 569 |
|
---|
[501] | 570 | if (mUseViewSpaceBox)
|
---|
[487] | 571 | {
|
---|
[674] | 572 | if (!mEnlargeViewSpace)
|
---|
[654] | 573 | {
|
---|
[1002] | 574 | mViewSpaceBox = new AxisAlignedBox3(box);
|
---|
[654] | 575 | }
|
---|
[598] | 576 | else
|
---|
| 577 | {
|
---|
[750] | 578 | mViewSpaceBox = new AxisAlignedBox3(mKdTree->GetBox());
|
---|
[677] | 579 |
|
---|
[1052] | 580 | if (0)
|
---|
[750] | 581 | {
|
---|
[1052] | 582 | // HACK: enlarge in y directon
|
---|
[750] | 583 | Vector3 size = mViewSpaceBox->Size();
|
---|
[1052] | 584 |
|
---|
| 585 | size[1] *= 1.25;
|
---|
| 586 | Vector3 enlarge(size[0] * 0.25f, size[1] * 0.0f, size[2] * 0.25f);
|
---|
| 587 | //Vector3 enlarge(size[0] * 4.0f, 0.0f, 0.0f);
|
---|
[598] | 588 |
|
---|
[1052] | 589 | mViewSpaceBox->Enlarge(enlarge);
|
---|
[750] | 590 | mViewSpaceBox->SetMax(mViewSpaceBox->Max() + enlarge);
|
---|
| 591 | }
|
---|
| 592 | else
|
---|
| 593 | {
|
---|
[1052] | 594 | AxisAlignedBox3 tbox(*mViewSpaceBox);
|
---|
| 595 |
|
---|
| 596 | Vector3 size = mViewSpaceBox->Size();
|
---|
| 597 | tbox.SetMax(0, mViewSpaceBox->Max(0) + size[0] * 0.5);
|
---|
| 598 | tbox.SetMin(0, mViewSpaceBox->Min(0) + size[0]);
|
---|
| 599 | *mViewSpaceBox = tbox;
|
---|
| 600 |
|
---|
[750] | 601 | // $$ JB temporary
|
---|
[1052] | 602 | /*AxisAlignedBox3 tempbox = *mViewSpaceBox;
|
---|
[750] | 603 |
|
---|
[1002] | 604 | float s = tempbox.Size(0);
|
---|
[750] | 605 |
|
---|
[1002] | 606 | tempbox.Scale(0.8f);
|
---|
| 607 | tempbox.SetMax(0, box.Max(0) + s*0.8f);
|
---|
| 608 | tempbox.SetMin(0, box.Min(0) + s*0.8f);
|
---|
[1052] | 609 | *mViewSpaceBox = tempbox;*/
|
---|
[750] | 610 | }
|
---|
[598] | 611 | }
|
---|
| 612 | //Debug << "view space box: " << *mViewSpaceBox << endl;
|
---|
[487] | 613 | }
|
---|
[434] | 614 | else
|
---|
[487] | 615 | {
|
---|
[579] | 616 | mViewSpaceBox = NULL;
|
---|
[487] | 617 | }
|
---|
[534] | 618 |
|
---|
[577] | 619 | AxisAlignedBox3 vbox = mViewSpaceBox ? *mViewSpaceBox : mKdTree->GetBox();
|
---|
| 620 |
|
---|
[590] | 621 | mSceneGraph->CollectObjects(&mObjects);
|
---|
| 622 |
|
---|
[518] | 623 | //-- load view cells from file if requested
|
---|
[577] | 624 | if (!mLoadViewCells)
|
---|
[574] | 625 | {
|
---|
[577] | 626 | mViewCellsManager->SetViewSpaceBox(vbox);
|
---|
[574] | 627 | // construct view cells using it's own set of samples
|
---|
| 628 | mViewCellsManager->Construct(this);
|
---|
[518] | 629 |
|
---|
[574] | 630 | //-- several visualizations and statistics
|
---|
[587] | 631 | Debug << "view cells construction finished: " << endl;
|
---|
[574] | 632 | mViewCellsManager->PrintStatistics(Debug);
|
---|
| 633 | }
|
---|
[590] | 634 | else
|
---|
[651] | 635 | {
|
---|
[590] | 636 | VssRayContainer dummies;
|
---|
| 637 | mViewCellsManager->Visualize(mObjects, dummies);
|
---|
[931] | 638 | mViewCellsManager->ExportViewCells("test.xml", mViewCellsManager->GetExportPvs(), mObjects);
|
---|
[590] | 639 | }
|
---|
[401] | 640 |
|
---|
[651] | 641 | VssTree *vssTree = NULL;
|
---|
[590] | 642 |
|
---|
[468] | 643 |
|
---|
[490] | 644 | long initialTime = GetTime();
|
---|
[468] | 645 |
|
---|
[490] | 646 | if (mLoadInitialSamples)
|
---|
| 647 | {
|
---|
| 648 | cout << "Loading samples from file ... ";
|
---|
| 649 | LoadSamples(mVssRays, mObjects);
|
---|
| 650 | cout << "finished\n" << endl;
|
---|
| 651 | totalSamples = (int)mVssRays.size();
|
---|
| 652 | }
|
---|
| 653 | else
|
---|
| 654 | {
|
---|
[534] | 655 |
|
---|
| 656 | while (totalSamples < mInitialSamples) {
|
---|
[490] | 657 | int passContributingSamples = 0;
|
---|
| 658 | int passSampleContributions = 0;
|
---|
| 659 | int passSamples = 0;
|
---|
[468] | 660 |
|
---|
[490] | 661 | int index = 0;
|
---|
[468] | 662 |
|
---|
[490] | 663 | int sampleContributions;
|
---|
[468] | 664 |
|
---|
[490] | 665 | int s = Min(mSamplesPerPass, mInitialSamples);
|
---|
| 666 | for (int k=0; k < s; k++) {
|
---|
| 667 | // changed by matt
|
---|
| 668 | Vector3 viewpoint;
|
---|
[534] | 669 | // viewpoint = GetViewpoint(mViewSpaceBox);
|
---|
[490] | 670 | mViewCellsManager->GetViewPoint(viewpoint);
|
---|
| 671 | Vector3 direction = GetDirection(viewpoint, mViewSpaceBox);
|
---|
[534] | 672 |
|
---|
[490] | 673 | sampleContributions = CastRay(viewpoint, direction, mVssRays);
|
---|
[468] | 674 |
|
---|
[490] | 675 | if (sampleContributions) {
|
---|
| 676 | passContributingSamples ++;
|
---|
| 677 | passSampleContributions += sampleContributions;
|
---|
| 678 | }
|
---|
| 679 | passSamples++;
|
---|
| 680 | totalSamples++;
|
---|
| 681 | }
|
---|
[468] | 682 |
|
---|
[490] | 683 | mPass++;
|
---|
| 684 | int pvsSize = 0;
|
---|
| 685 | float avgRayContrib = (passContributingSamples > 0) ?
|
---|
| 686 | passSampleContributions/(float)passContributingSamples : 0;
|
---|
[468] | 687 |
|
---|
[490] | 688 | cout << "#Pass " << mPass << " : t = " << TimeDiff(startTime, GetTime())*1e-3 << "s" << endl;
|
---|
| 689 | cout << "#TotalSamples=" << totalSamples/1000
|
---|
[651] | 690 | << "#SampleContributions=" << passSampleContributions << " ("
|
---|
[490] | 691 | << 100*passContributingSamples/(float)passSamples<<"%)" << " avgPVS="
|
---|
| 692 | << pvsSize/(float)mObjects.size() << endl
|
---|
| 693 | << "avg ray contrib=" << avgRayContrib << endl;
|
---|
[468] | 694 |
|
---|
[490] | 695 | mStats <<
|
---|
| 696 | "#Pass\n" <<mPass<<endl<<
|
---|
| 697 | "#Time\n" << TimeDiff(startTime, GetTime())*1e-3 << endl<<
|
---|
| 698 | "#TotalSamples\n" << totalSamples<< endl<<
|
---|
| 699 | "#SampleContributions\n" << passSampleContributions << endl <<
|
---|
| 700 | "#PContributingSamples\n"<<100*passContributingSamples/(float)passSamples<<endl <<
|
---|
| 701 | "#AvgPVS\n"<< pvsSize/(float)mObjects.size() << endl <<
|
---|
| 702 | "#AvgRayContrib\n" << avgRayContrib << endl;
|
---|
| 703 | }
|
---|
| 704 |
|
---|
| 705 | cout << "#totalPvsSize=" << mKdTree->CollectLeafPvs() << endl;
|
---|
[534] | 706 |
|
---|
| 707 |
|
---|
| 708 |
|
---|
[490] | 709 | }
|
---|
[564] | 710 |
|
---|
| 711 |
|
---|
[490] | 712 | cout << "#totalRayStackSize=" << (int)mVssRays.size() << endl << flush;
|
---|
| 713 | Debug << (int)mVssRays.size() << " rays generated in "
|
---|
| 714 | << TimeDiff(initialTime, GetTime()) * 1e-3 << " seconds" << endl;
|
---|
[401] | 715 |
|
---|
[490] | 716 | if (mStoreInitialSamples)
|
---|
| 717 | {
|
---|
| 718 | cout << "Writing " << (int)mVssRays.size() << " samples to file ... ";
|
---|
[508] | 719 | ExportSamples(mVssRays);
|
---|
[490] | 720 | cout << "finished\n" << endl;
|
---|
[491] | 721 |
|
---|
| 722 | /*VssRayContainer dummyRays;
|
---|
| 723 | LoadSamples(dummyRays, mObjects);
|
---|
| 724 | Debug << "rays " << (int)mVssRays.size() << " " << dummyRays.size() << endl;
|
---|
| 725 |
|
---|
| 726 | for (int i = 0; i < (int)mVssRays.size(); ++ i)
|
---|
| 727 | {
|
---|
| 728 | Debug << mVssRays[i]->GetOrigin() << " " << mVssRays[i]->GetTermination() << " " << mVssRays[i]->mOriginObject << " " << mVssRays[i]->mTerminationObject << endl;
|
---|
| 729 | Debug << dummyRays[i]->GetOrigin() << " " << dummyRays[i]->GetTermination() << " " << dummyRays[i]->mOriginObject << " " << dummyRays[i]->mTerminationObject << endl << endl;
|
---|
| 730 | }*/
|
---|
[434] | 731 | }
|
---|
[468] | 732 |
|
---|
[534] | 733 |
|
---|
[712] | 734 | //int numExportRays = 2000;
|
---|
| 735 | int numExportRays = 0;
|
---|
[372] | 736 |
|
---|
[434] | 737 | if (numExportRays) {
|
---|
| 738 | char filename[64];
|
---|
| 739 | sprintf(filename, "vss-rays-initial.x3d");
|
---|
| 740 | ExportRays(filename, mVssRays, numExportRays);
|
---|
| 741 | }
|
---|
[468] | 742 |
|
---|
[434] | 743 | vssTree = new VssTree;
|
---|
| 744 | // viewcells = Construct(mVssRays);
|
---|
[468] | 745 |
|
---|
[434] | 746 | vssTree->Construct(mVssRays, mViewSpaceBox);
|
---|
| 747 | cout<<"VssTree root PVS size = "<<vssTree->GetRootPvsSize()<<endl;
|
---|
[468] | 748 |
|
---|
[1074] | 749 | ExportRays("kdtree.x3d", mVssRays, 10);
|
---|
| 750 |
|
---|
[465] | 751 | if (0)
|
---|
| 752 | {
|
---|
| 753 | ExportVssTree("vss-tree-100.x3d", vssTree, Vector3(1,0,0));
|
---|
| 754 | ExportVssTree("vss-tree-001.x3d", vssTree, Vector3(0,0,1));
|
---|
| 755 | ExportVssTree("vss-tree-101.x3d", vssTree, Vector3(1,0,1));
|
---|
| 756 | ExportVssTree("vss-tree-101m.x3d", vssTree, Vector3(-1,0,-1));
|
---|
| 757 | ExportVssTreeLeaves(vssTree, 10);
|
---|
| 758 | }
|
---|
[430] | 759 |
|
---|
[434] | 760 | // viewcells->UpdatePVS(newVssRays);
|
---|
| 761 | // get viewcells as kd tree boxes
|
---|
| 762 | vector<AxisAlignedBox3> kdViewcells;
|
---|
| 763 | if (0) {
|
---|
| 764 | vector<KdLeaf *> leaves;
|
---|
| 765 | mKdTree->CollectLeaves(leaves);
|
---|
| 766 | vector<KdLeaf *>::const_iterator it;
|
---|
| 767 | int targetLeaves = 50;
|
---|
| 768 | float prob = targetLeaves/(float)leaves.size();
|
---|
| 769 | for (it = leaves.begin(); it != leaves.end(); ++it)
|
---|
| 770 | if (RandomValue(0.0f,1.0f) < prob)
|
---|
| 771 | kdViewcells.push_back(mKdTree->GetBox(*it));
|
---|
[468] | 772 |
|
---|
[434] | 773 | float avgPvs = GetAvgPvsSize(vssTree, kdViewcells);
|
---|
| 774 | cout<<"Initial average PVS size = "<<avgPvs<<endl;
|
---|
| 775 | }
|
---|
| 776 |
|
---|
[468] | 777 |
|
---|
[434] | 778 | int samples = 0;
|
---|
| 779 | int pass = 0;
|
---|
[448] | 780 |
|
---|
[535] | 781 |
|
---|
[448] | 782 | // cast view cell samples
|
---|
[557] | 783 | while (samples < mVssSamples)
|
---|
| 784 | {
|
---|
| 785 |
|
---|
[434] | 786 | int num = mVssSamplesPerPass;
|
---|
| 787 | SimpleRayContainer rays;
|
---|
| 788 | VssRayContainer vssRays;
|
---|
[468] | 789 |
|
---|
[434] | 790 | if (!mUseImportanceSampling) {
|
---|
| 791 | for (int j=0; j < num; j++) {
|
---|
[487] | 792 | // changed by matt
|
---|
| 793 | //Vector3 viewpoint = GetViewpoint(mViewSpaceBox);
|
---|
| 794 | Vector3 viewpoint;
|
---|
| 795 | mViewCellsManager->GetViewPoint(viewpoint);
|
---|
[434] | 796 | Vector3 direction = GetDirection(viewpoint, mViewSpaceBox);
|
---|
| 797 | rays.push_back(SimpleRay(viewpoint, direction));
|
---|
| 798 | }
|
---|
| 799 | } else {
|
---|
| 800 | num = GenerateImportanceRays(vssTree, num, rays);
|
---|
| 801 | }
|
---|
[468] | 802 |
|
---|
[434] | 803 | for (int i=0; i < rays.size(); i++)
|
---|
| 804 | CastRay(rays[i].mOrigin, rays[i].mDirection, vssRays);
|
---|
[468] | 805 |
|
---|
[434] | 806 | vssTree->AddRays(vssRays);
|
---|
[468] | 807 |
|
---|
[434] | 808 | if (0) {
|
---|
| 809 | int subdivided = vssTree->UpdateSubdivision();
|
---|
| 810 | cout<<"subdivided leafs = "<<subdivided<<endl;
|
---|
| 811 | }
|
---|
[427] | 812 |
|
---|
[434] | 813 | float avgPvs = GetAvgPvsSize(vssTree, kdViewcells);
|
---|
| 814 | cout<<"Average PVS size = "<<avgPvs<<endl;
|
---|
[430] | 815 |
|
---|
[517] | 816 | /// compute view cell contribution of rays
|
---|
[574] | 817 | mViewCellsManager->ComputeSampleContributions(vssRays, true, false);
|
---|
[517] | 818 |
|
---|
[434] | 819 | if (numExportRays) {
|
---|
| 820 | char filename[64];
|
---|
| 821 | if (mUseImportanceSampling)
|
---|
| 822 | sprintf(filename, "vss-rays-i%04d.x3d", pass);
|
---|
| 823 | else
|
---|
| 824 | sprintf(filename, "vss-rays-%04d.x3d", pass);
|
---|
[468] | 825 |
|
---|
[434] | 826 | ExportRays(filename, vssRays, numExportRays);
|
---|
[401] | 827 | }
|
---|
[386] | 828 |
|
---|
[434] | 829 | samples+=num;
|
---|
| 830 | float pvs = vssTree->GetAvgPvsSize();
|
---|
| 831 | cout<<"*****************************\n";
|
---|
| 832 | cout<<samples<<" avgPVS ="<<pvs<<endl;
|
---|
| 833 | cout<<"VssTree root PVS size = "<<vssTree->GetRootPvsSize()<<endl;
|
---|
| 834 | cout<<"*****************************\n";
|
---|
[557] | 835 | // if (samples >= mVssSamples) break;
|
---|
| 836 | pass ++;
|
---|
[434] | 837 | }
|
---|
[448] | 838 |
|
---|
[574] | 839 | if (mTestBeamSampling && mUseGlRenderer)
|
---|
| 840 | {
|
---|
| 841 | TestBeamCasting(vssTree, mViewCellsManager, mObjects);
|
---|
[553] | 842 | }
|
---|
| 843 |
|
---|
[587] | 844 | if (0)
|
---|
| 845 | Debug << vssTree->stat << endl;
|
---|
[468] | 846 |
|
---|
[574] | 847 | if (0)
|
---|
| 848 | {
|
---|
| 849 | VssRayContainer viewCellRays;
|
---|
[517] | 850 |
|
---|
[574] | 851 | // compute rays used for view cells construction
|
---|
| 852 | const int numRays = mViewCellsManager->GetVisualizationSamples();
|
---|
[468] | 853 |
|
---|
[574] | 854 | vssTree->CollectRays(viewCellRays, numRays);
|
---|
[540] | 855 | }
|
---|
[535] | 856 |
|
---|
[452] | 857 | //-- render simulation after merge
|
---|
[574] | 858 | cout << "\nevaluating bsp view cells render time after sampling ... ";
|
---|
[605] | 859 | Debug << "\nStatistics after sampling: " << endl;
|
---|
| 860 |
|
---|
[468] | 861 | mRenderSimulator->RenderScene();
|
---|
| 862 | SimulationStatistics ss;
|
---|
| 863 | mRenderSimulator->GetStatistics(ss);
|
---|
[474] | 864 |
|
---|
[452] | 865 | cout << " finished" << endl;
|
---|
| 866 | cout << ss << endl;
|
---|
| 867 | Debug << ss << endl;
|
---|
[468] | 868 |
|
---|
[434] | 869 | delete vssTree;
|
---|
[475] | 870 |
|
---|
[434] | 871 | return true;
|
---|
[466] | 872 | }
|
---|
[697] | 873 |
|
---|
[860] | 874 | } |
---|