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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9 | #include "VssRay.h"
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10 | #include "VssTree.h"
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11 | #include "ViewCellsManager.h"
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12 | #include "RenderSimulator.h"
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13 | #include "Beam.h"
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14 | #include "GlRenderer.h"
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15 | #include "ArchModeler2MLRT.hxx"
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16 | #include "Intersectable.h"
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17 |
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18 |
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19 | namespace GtpVisibilityPreprocessor {
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20 |
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21 | bool use2dSampling = false;
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22 | bool useViewspacePlane = false;
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23 |
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24 | VssPreprocessor::VssPreprocessor():
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25 | mPass(0),
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26 | mVssRays(),
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27 | mViewSpaceBox(NULL)
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28 | {
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29 | // this should increase coherence of the samples
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30 | Environment::GetSingleton()->GetIntValue("VssPreprocessor.samplesPerPass", mSamplesPerPass);
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31 | Environment::GetSingleton()->GetIntValue("VssPreprocessor.initialSamples", mInitialSamples);
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32 | Environment::GetSingleton()->GetIntValue("VssPreprocessor.vssSamples", mVssSamples);
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33 | Environment::GetSingleton()->GetIntValue("VssPreprocessor.vssSamplesPerPass", mVssSamplesPerPass);
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34 | Environment::GetSingleton()->GetBoolValue("VssPreprocessor.useImportanceSampling", mUseImportanceSampling);
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35 |
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36 | Environment::GetSingleton()->GetBoolValue("VssPreprocessor.loadInitialSamples", mLoadInitialSamples);
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37 | Environment::GetSingleton()->GetBoolValue("VssPreprocessor.storeInitialSamples", mStoreInitialSamples);
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38 | Environment::GetSingleton()->GetBoolValue("VssPreprocessor.useViewSpaceBox", mUseViewSpaceBox);
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39 | Environment::GetSingleton()->GetBoolValue("VssPreprocessor.testBeamSampling", mTestBeamSampling);
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40 | Environment::GetSingleton()->GetBoolValue("VssPreprocessor.enlargeViewSpace", mEnlargeViewSpace);
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41 | Environment::GetSingleton()->GetBoolValue("Preprocessor.detectEmptyViewSpace", mDetectEmptyViewSpace);
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42 |
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43 | useViewspacePlane = mUseViewSpaceBox; //hack
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44 |
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45 |
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46 | Debug << "*********** vss preprocessor options **************" << endl;
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47 | Debug << "use view space box=" << mUseViewSpaceBox << endl;
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48 | Debug << "enlarge view space=" << mEnlargeViewSpace << endl;
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49 | Debug << "*********** end vss preprocessor options **************" << endl;
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50 |
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51 | mStats.open("stats.log");
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52 | }
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53 |
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54 |
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55 | VssPreprocessor::~VssPreprocessor()
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56 | {
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57 | CLEAR_CONTAINER(mVssRays);
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58 | DEL_PTR(mViewSpaceBox);
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59 | }
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60 |
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61 |
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62 | void
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63 | VssPreprocessor::SetupRay(Ray &ray,
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64 | const Vector3 &point,
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65 | const Vector3 &direction
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66 | )
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67 | {
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68 | ray.Clear();
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69 | // do not store anything else then intersections at the ray
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70 | ray.Init(point, direction, Ray::LOCAL_RAY);
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71 | }
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72 |
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73 |
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74 | void
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75 | VssPreprocessor::CastRays(
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76 | SimpleRayContainer &rays,
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77 | VssRayContainer &vssRays
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78 | )
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79 | {
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80 | AxisAlignedBox3 &box = mViewSpaceBox ? *mViewSpaceBox : mKdTree->GetBox();
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81 |
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82 | #if 1
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83 | for (int i=0; i < rays.size(); i++)
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84 | {
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85 | CastRay(rays[i].mOrigin, rays[i].mDirection, vssRays, box);
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86 | }
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87 | #else
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88 | for (int i = 0; i < rays.size(); i += 16)
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89 | {
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90 | CastRay(rays[i].mOrigin, rays[i].mDirection, vssRays, box);
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91 | }
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92 |
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93 | #endif
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94 | }
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95 |
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96 |
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97 | void VssPreprocessor::CastRays16(SimpleRayContainer &rays,
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98 | VssRayContainer &vssRays,
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99 | const AxisAlignedBox3 &sbox)
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100 | { |
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101 | /* |
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102 | mlrtaStoreRayAS16(const float* pforg, const float* pfdir, int j); |
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103 | |
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104 | |
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105 | // input parameters |
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106 | const RTVec3f& org = *reinterpret_cast<const RTVec3f*> (pforg); |
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107 | const RTVec3f& rd = *reinterpret_cast<const RTVec3f*> (pfdir); |
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108 | |
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109 | int ri = j/4; |
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110 | int ci = j%4; |
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111 | *((float*)&ibp4.ray4X[ri].m_origin.t[0] + ci) = org[0]; |
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112 | *((float*)&ibp4.ray4X[ri].m_origin.t[1] + ci) = org[1]; |
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113 | *((float*)&ibp4.ray4X[ri].m_origin.t[2] + ci) = org[2]; |
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114 | |
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115 | *((float*)&ibp4.ray4X[ri].m_direction.t[0] + ci) = rd[0]; |
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116 | *((float*)&ibp4.ray4X[ri].m_direction.t[1] + ci) = rd[1]; |
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117 | *((float*)&ibp4.ray4X[ri].m_direction.t[2] + ci) = rd[2]; |
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118 | |
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119 | mlrtaTraverseGroupAS16(const float* bbmin, const float* bbmax, int* hit_triangles, float* dist);*/ |
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120 | } |
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121 |
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122 |
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123 | int VssPreprocessor::CastIntelDoubleRay(
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124 | const Vector3 &viewPoint,
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125 | const Vector3 &direction,
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126 | VssRayContainer &vssRays,
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127 | const AxisAlignedBox3 &box)
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128 | {
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129 | VssRay *vssRay = NULL;
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130 | int hits = 0;
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131 |
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132 | Vector3 pointA, pointB;
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133 |
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134 | Intersectable *objectA =
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135 | CastIntelSingleRay(viewPoint, direction, pointA, box);
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136 |
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137 | // cast ray into other direction
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138 | Intersectable *objectB =
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139 | CastIntelSingleRay(viewPoint, -direction, pointB, box);
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140 |
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141 | const bool validSample = (objectA != objectB);
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142 |
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143 | if (validSample)
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144 | {
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145 | if (objectA)
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146 | {
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147 | vssRay = new VssRay(pointB,
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148 | pointA,
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149 | objectB,
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150 | objectA,
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151 | mPass);
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152 | vssRays.push_back(vssRay);
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153 | hits ++;
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154 | }
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155 |
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156 | if (objectB)
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157 | {
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158 | vssRay = new VssRay(pointA,
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159 | pointB,
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160 | objectA,
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161 | objectB,
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162 | mPass);
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163 | vssRays.push_back(vssRay);
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164 | hits ++;
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165 | }
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166 | //Debug << "intel ray: " << *vssRay << endl;
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167 | }
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168 | //cout << "a";
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169 | return hits;
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170 | }
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171 |
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172 |
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173 | Intersectable *VssPreprocessor::CastIntelSingleRay(const Vector3 &viewPoint,
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174 | const Vector3 &direction,
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175 | Vector3 &tPoint,
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176 | const AxisAlignedBox3 &box
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177 | )
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178 | {
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179 | AxisAlignedBox3 sbox = box;
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180 | sbox.Enlarge(Vector3(-Limits::Small));
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181 |
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182 | if (!sbox.IsInside(viewPoint))
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183 | return 0;
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184 |
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185 | float pforg[3];
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186 | float pfdir[3];
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187 | double pfnorm[3];
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188 |
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189 | pforg[0] = viewPoint[0]; pforg[1] = viewPoint[1]; pforg[2] = viewPoint[2];
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190 | pfdir[0] = direction[0]; pfdir[1] = direction[1]; pfdir[2] = direction[2];
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191 |
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192 | float dist = 0;
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193 | const int hittriangle = mlrtaIntersectAS(pforg, pfdir, pfnorm, dist);
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194 |
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195 | if (hittriangle == -1)
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196 | {
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197 | static Ray ray;
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198 | SetupRay(ray, viewPoint, direction);
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199 |
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200 | float tmin = 0, tmax;
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201 | if (box.ComputeMinMaxT(ray, &tmin, &tmax) && tmin < tmax)
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202 | {
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203 | tPoint = ray.Extrap(tmax);
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204 | }
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205 |
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206 | return NULL;
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207 | }
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208 | else
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209 | {
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210 | tPoint[0] = pforg[0] + pfdir[0] * dist;
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211 | tPoint[1] = pforg[1] + pfdir[1] * dist;
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212 | tPoint[2] = pforg[2] + pfdir[2] * dist;
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213 |
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214 | return mFaceParents[hittriangle];
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215 | }
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216 | }
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217 |
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218 |
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219 | int
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220 | VssPreprocessor::CastInternalRay(
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221 | const Vector3 &viewPoint,
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222 | const Vector3 &direction,
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223 | VssRayContainer &vssRays,
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224 | const AxisAlignedBox3 &box
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225 | )
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226 | {
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227 | int hits = 0;
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228 | static Ray ray;
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229 |
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230 | AxisAlignedBox3 sbox = box;
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231 | sbox.Enlarge(Vector3(-Limits::Small));
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232 |
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233 | if (!sbox.IsInside(viewPoint))
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234 | return 0;
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235 |
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236 | SetupRay(ray, viewPoint, direction);
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237 |
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238 | // cast ray to KD tree to find intersection with other objects
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239 | Intersectable *objectA, *objectB;
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240 |
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241 | Vector3 pointA;
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242 | Vector3 pointB;
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243 |
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244 | //float bsize = Magnitude(box.Size());
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245 | if (!mDetectEmptyViewSpace)
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246 | ray.mFlags &= ~Ray::CULL_BACKFACES;
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247 | else
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248 | ray.mFlags |= Ray::CULL_BACKFACES;
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249 |
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250 | if (mKdTree->CastRay(ray))
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251 | {
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252 | objectA = ray.intersections[0].mObject;
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253 | pointA = ray.Extrap(ray.intersections[0].mT);
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254 | }
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255 | else
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256 | {
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257 | objectA = NULL;
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258 | // compute intersection with the scene bounding box
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259 | float tmin, tmax;
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260 | if (box.ComputeMinMaxT(ray, &tmin, &tmax) && tmin < tmax)
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261 | pointA = ray.Extrap(tmax);
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262 | else
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263 | return 0;
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264 | }
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265 |
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266 | // matt: point A could be undefined?
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267 |
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268 | // cast ray into opposite direction
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269 | if (1 && mDetectEmptyViewSpace) {
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270 | SetupRay(ray, pointA, -direction);
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271 | } else
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272 | SetupRay(ray, viewPoint, -direction);
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273 |
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274 | if (!mDetectEmptyViewSpace)
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275 | ray.mFlags &= ~Ray::CULL_BACKFACES;
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276 | else
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277 | ray.mFlags |= Ray::CULL_BACKFACES;
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278 |
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279 | if (mKdTree->CastRay(ray))
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280 | {
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281 | objectB = ray.intersections[0].mObject;
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282 | pointB = ray.Extrap(ray.intersections[0].mT);
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283 | }
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284 | else
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285 | {
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286 | objectB = NULL;
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287 | float tmin, tmax;
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288 |
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289 | if (box.ComputeMinMaxT(ray, &tmin, &tmax) && tmin < tmax)
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290 | pointB = ray.Extrap(tmax);
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291 | else
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292 | return 0;
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293 | }
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294 |
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295 | //bool thesame = objectA && (objectA == objectB);
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296 |
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297 | // if (objectA == NULL && objectB != NULL) {
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298 | if (1 && mDetectEmptyViewSpace)
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299 | {
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300 | // cast again to ensure that there is no objectA
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301 | SetupRay(ray, pointB, direction);
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302 | ray.mFlags |= Ray::CULL_BACKFACES;
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303 |
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304 | if (mKdTree->CastRay(ray))
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305 | {
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306 | objectA = ray.intersections[0].mObject;
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307 | pointA = ray.Extrap(ray.intersections[0].mT);
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308 | }
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309 | }
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310 |
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311 |
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312 | VssRay *vssRay = NULL;
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313 |
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314 | bool validSample = (objectA != objectB);
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315 |
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316 | //if (validSample && thesame) Debug << "warning!!" << endl;
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317 |
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318 | if (0 && mDetectEmptyViewSpace)
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319 | {
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320 | // consider all samples valid
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321 | // check if the viewpoint lies on the line segment AB
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322 | if (Distance(pointA, pointB) <
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323 | Distance(viewPoint, pointA) + Distance(viewPoint, pointB) - Limits::Small)
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324 | {
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325 | validSample = false;
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326 | }
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327 | }
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328 |
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329 | if (validSample)
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330 | {
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331 | if (objectA)
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332 | {
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333 | vssRay = new VssRay(pointB,
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334 | pointA,
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335 | objectB,
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336 | objectA,
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337 | mPass);
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338 | vssRays.push_back(vssRay);
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339 | hits ++;
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340 | }
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341 |
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342 | if (objectB)
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343 | {
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344 | vssRay = new VssRay(pointA,
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345 | pointB,
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346 | objectA,
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347 | objectB,
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348 | mPass);
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349 | vssRays.push_back(vssRay);
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350 | hits ++;
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351 | }
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352 | //Debug << "internal ray: " << *vssRay << endl << endl;
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353 | }
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354 | //cout << "b";
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355 | return hits;
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356 | }
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357 |
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358 |
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359 | int
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360 | VssPreprocessor::CastRay(
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361 | const Vector3 &viewPoint,
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362 | const Vector3 &direction,
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363 | VssRayContainer &vssRays,
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364 | const AxisAlignedBox3 &box
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365 | )
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366 | {
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367 | switch (mRayCastMethod)
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368 | {
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369 | case INTEL_RAYCASTER:
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370 | return CastIntelDoubleRay(viewPoint, direction, vssRays, box);
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371 | case INTERNAL_RAYCASTER:
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372 | default:
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373 | return CastInternalRay(viewPoint, direction, vssRays, box);
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374 | }
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375 | }
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376 |
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377 |
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378 | Vector3
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379 | VssPreprocessor::GetViewpoint(AxisAlignedBox3 *viewSpaceBox)
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380 | {
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381 | AxisAlignedBox3 box;
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382 |
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383 | if (viewSpaceBox)
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384 | box =*viewSpaceBox;
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385 | else
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386 | box = mKdTree->GetBox();
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387 |
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388 | // shrink the box in the y direction
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389 | return box.GetRandomPoint();
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390 | }
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391 |
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392 | Vector3
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393 | VssPreprocessor::GetDirection(const Vector3 &viewpoint,
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394 | AxisAlignedBox3 *viewSpaceBox
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395 | )
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396 | {
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397 | Vector3 point;
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398 | if (!use2dSampling)
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399 | {
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400 | if (0)
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401 | {
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402 | Vector3 normal;
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403 | int i = Random((int)mObjects.size());
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404 | Intersectable *object = mObjects[i];
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405 | object->GetRandomSurfacePoint(point, normal);
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406 | }
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407 | else
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408 | point = mKdTree->GetBox().GetRandomPoint();
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409 | // point = viewpoint + UniformRandomVector();
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410 | }
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411 | else
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412 | {
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413 | AxisAlignedBox3 box;
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414 |
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415 | if (viewSpaceBox)
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416 | box =*viewSpaceBox;
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417 | else
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418 | box = mKdTree->GetBox();
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419 |
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420 | point = box.GetRandomPoint();
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421 | point.y = viewpoint.y;
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422 | }
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423 |
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424 | return point - viewpoint;
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425 | }
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426 |
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427 | int
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428 | VssPreprocessor::GenerateImportanceRays(VssTree *vssTree,
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429 | const int desiredSamples,
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430 | SimpleRayContainer &rays
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431 | )
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432 | {
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433 | int num;
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434 | if (0) {
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435 | float minRayContribution;
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436 | float maxRayContribution;
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437 | float avgRayContribution;
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438 |
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439 | vssTree->GetRayContributionStatistics(minRayContribution,
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440 | maxRayContribution,
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441 | avgRayContribution);
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442 |
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443 | cout<<
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444 | "#MIN_RAY_CONTRIB\n"<<minRayContribution<<endl<<
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445 | "#MAX_RAY_CONTRIB\n"<<maxRayContribution<<endl<<
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446 | "#AVG_RAY_CONTRIB\n"<<avgRayContribution<<endl;
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447 |
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448 | float p = desiredSamples/(float)(avgRayContribution*vssTree->stat.Leaves());
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449 | num = vssTree->GenerateRays(p, rays);
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450 | } else {
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451 | int leaves = vssTree->stat.Leaves();
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452 | num = vssTree->GenerateRays(desiredSamples, leaves, rays);
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453 | }
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454 |
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455 | cout<<"Generated "<<num<<" rays."<<endl;
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456 |
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457 | return num;
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458 | }
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459 |
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460 |
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461 | bool
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462 | VssPreprocessor::ExportRays(const char *filename,
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463 | const VssRayContainer &vssRays,
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464 | const int number
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465 | )
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466 | {
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467 | cout<<"Exporting vss rays..."<<endl<<flush;
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468 |
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469 | Exporter *exporter = NULL;
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470 | exporter = Exporter::GetExporter(filename);
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471 | exporter->SetWireframe();
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472 | exporter->ExportKdTree(*mKdTree);
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473 | exporter->SetFilled();
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474 | exporter->ExportScene(mSceneGraph->mRoot);
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475 | exporter->SetWireframe();
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476 |
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477 | if (mViewSpaceBox) {
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478 | exporter->SetForcedMaterial(RgbColor(1,0,1));
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479 | exporter->ExportBox(*mViewSpaceBox);
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480 | exporter->ResetForcedMaterial();
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481 | }
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482 |
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483 | VssRayContainer rays;
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484 | vssRays.SelectRays(number, rays);
|
---|
485 |
|
---|
486 | //exporter->ExportRays(rays, RgbColor(1, 0, 0));
|
---|
487 |
|
---|
488 | delete exporter;
|
---|
489 |
|
---|
490 | cout<<"done."<<endl<<flush;
|
---|
491 |
|
---|
492 | return true;
|
---|
493 | }
|
---|
494 |
|
---|
495 |
|
---|
496 | bool
|
---|
497 | VssPreprocessor::ExportVssTree(char *filename,
|
---|
498 | VssTree *tree,
|
---|
499 | const Vector3 &dir
|
---|
500 | )
|
---|
501 | {
|
---|
502 | Exporter *exporter = Exporter::GetExporter(filename);
|
---|
503 | exporter->SetFilled();
|
---|
504 | exporter->ExportScene(mSceneGraph->mRoot);
|
---|
505 | // exporter->SetWireframe();
|
---|
506 | bool result = exporter->ExportVssTree2( *tree, dir );
|
---|
507 | delete exporter;
|
---|
508 | return result;
|
---|
509 | }
|
---|
510 |
|
---|
511 | bool
|
---|
512 | VssPreprocessor::ExportVssTreeLeaf(char *filename,
|
---|
513 | VssTree *tree,
|
---|
514 | VssTreeLeaf *leaf)
|
---|
515 | {
|
---|
516 | Exporter *exporter = NULL;
|
---|
517 | exporter = Exporter::GetExporter(filename);
|
---|
518 | exporter->SetWireframe();
|
---|
519 | exporter->ExportKdTree(*mKdTree);
|
---|
520 |
|
---|
521 | if (mViewSpaceBox) {
|
---|
522 | exporter->SetForcedMaterial(RgbColor(1,0,0));
|
---|
523 | exporter->ExportBox(*mViewSpaceBox);
|
---|
524 | exporter->ResetForcedMaterial();
|
---|
525 | }
|
---|
526 |
|
---|
527 | exporter->SetForcedMaterial(RgbColor(0,0,1));
|
---|
528 | exporter->ExportBox(tree->GetBBox(leaf));
|
---|
529 | exporter->ResetForcedMaterial();
|
---|
530 |
|
---|
531 | VssRayContainer rays[4];
|
---|
532 | for (int i=0; i < leaf->rays.size(); i++) {
|
---|
533 | int k = leaf->rays[i].GetRayClass();
|
---|
534 | rays[k].push_back(leaf->rays[i].mRay);
|
---|
535 | }
|
---|
536 |
|
---|
537 | // SOURCE RAY
|
---|
538 | exporter->ExportRays(rays[0], RgbColor(1, 0, 0));
|
---|
539 | // TERMINATION RAY
|
---|
540 | exporter->ExportRays(rays[1], RgbColor(1, 1, 1));
|
---|
541 | // PASSING_RAY
|
---|
542 | exporter->ExportRays(rays[2], RgbColor(1, 1, 0));
|
---|
543 | // CONTAINED_RAY
|
---|
544 | exporter->ExportRays(rays[3], RgbColor(0, 0, 1));
|
---|
545 |
|
---|
546 | delete exporter;
|
---|
547 | return true;
|
---|
548 | }
|
---|
549 |
|
---|
550 | void
|
---|
551 | VssPreprocessor::ExportVssTreeLeaves(VssTree *tree, const int number)
|
---|
552 | {
|
---|
553 | vector<VssTreeLeaf *> leaves;
|
---|
554 | tree->CollectLeaves(leaves);
|
---|
555 |
|
---|
556 | int num = 0;
|
---|
557 | int i;
|
---|
558 | float p = number / (float)leaves.size();
|
---|
559 | for (i=0; i < leaves.size(); i++) {
|
---|
560 | if (RandomValue(0,1) < p) {
|
---|
561 | char filename[64];
|
---|
562 | sprintf(filename, "vss-leaf-%04d.x3d", num);
|
---|
563 | ExportVssTreeLeaf(filename, tree, leaves[i]);
|
---|
564 | num++;
|
---|
565 | }
|
---|
566 | if (num >= number)
|
---|
567 | break;
|
---|
568 | }
|
---|
569 | }
|
---|
570 |
|
---|
571 |
|
---|
572 | void VssPreprocessor::TestBeamCasting(VssTree *tree,
|
---|
573 | ViewCellsManager *vm,
|
---|
574 | const ObjectContainer &objects)
|
---|
575 | {
|
---|
576 | //debuggerWidget = new GlDebuggerWidget(renderer);
|
---|
577 | // renderer->resize(640, 480);
|
---|
578 | //debuggerWidget->resize(640, 480);
|
---|
579 |
|
---|
580 | vector<VssTreeLeaf *> leaves;
|
---|
581 | tree->CollectLeaves(leaves);
|
---|
582 |
|
---|
583 | Exporter *exporter = Exporter::GetExporter("shafts.x3d");
|
---|
584 |
|
---|
585 | exporter->SetWireframe();
|
---|
586 | exporter->ExportGeometry(objects);
|
---|
587 | exporter->SetFilled();
|
---|
588 | //Randomize();
|
---|
589 | // §§matt
|
---|
590 | // debuggerWidget = new GlDebuggerWidget(renderer);
|
---|
591 |
|
---|
592 | /*debuggerWidget->mBeam = beam;
|
---|
593 | debuggerWidget->mSourceObject = sourceObj;
|
---|
594 | debuggerWidget->mSamples = 10000;
|
---|
595 |
|
---|
596 | Debug << "showing window" << endl;
|
---|
597 | debuggerWidget->show();
|
---|
598 |
|
---|
599 | renderer->makeCurrent();*/
|
---|
600 |
|
---|
601 | for (int i = 0; i < 10; ++ i)
|
---|
602 | {
|
---|
603 | Beam beam;
|
---|
604 | Intersectable *sourceObj = mObjects[5];
|
---|
605 |
|
---|
606 | const int index = (int)RandomValue(0, (Real)((int)leaves.size() - 1));
|
---|
607 | VssTreeLeaf *leaf = leaves[index];
|
---|
608 |
|
---|
609 | AxisAlignedBox3 dirBox = tree->GetDirBBox(leaf);
|
---|
610 | AxisAlignedBox3 box = tree->GetBBox(leaf);
|
---|
611 |
|
---|
612 | beam.Construct(box, dirBox);
|
---|
613 |
|
---|
614 | // collect kd leaves and view cells
|
---|
615 | mKdTree->CastBeam(beam);
|
---|
616 | vm->CastBeam(beam);
|
---|
617 |
|
---|
618 | Debug << "found " << (int)beam.mViewCells.size() << " view cells and "
|
---|
619 | << (int)beam.mKdNodes.size() << " kd nodes" << endl;
|
---|
620 |
|
---|
621 | BeamSampleStatistics stats;
|
---|
622 | // §§matt
|
---|
623 | /* renderer->SampleBeamContributions(sourceObj,
|
---|
624 | beam,
|
---|
625 | 200000,
|
---|
626 | stats);
|
---|
627 |
|
---|
628 | char s[64]; sprintf(s, "shaft%04d.png", i);
|
---|
629 |
|
---|
630 | QImage image = renderer->toImage();
|
---|
631 | image.save(s, "PNG");
|
---|
632 | Debug << "beam statistics: " << stats << endl << endl;
|
---|
633 | */
|
---|
634 | if (1)
|
---|
635 | {
|
---|
636 | AxisAlignedBox3 sbox = mSceneGraph->GetBox();
|
---|
637 | Vector3 bmin = sbox.Min() - 150.0f;
|
---|
638 | Vector3 bmax = sbox.Max() + 150.0f;
|
---|
639 | AxisAlignedBox3 vbox(bmin, bmax);
|
---|
640 |
|
---|
641 | exporter->ExportBeam(beam, vbox);
|
---|
642 | }
|
---|
643 |
|
---|
644 | bool exportViewCells = false;
|
---|
645 |
|
---|
646 | if (exportViewCells)
|
---|
647 | {
|
---|
648 | ViewCellContainer::const_iterator it, it_end = beam.mViewCells.end();
|
---|
649 |
|
---|
650 | for (it = beam.mViewCells.begin(); it != beam.mViewCells.end(); ++ it)
|
---|
651 | {
|
---|
652 | BspNodeGeometry geom;
|
---|
653 | AxisAlignedBox3 vbox;
|
---|
654 | vbox.Initialize();
|
---|
655 | vbox.Include((*it)->GetMesh());
|
---|
656 |
|
---|
657 | exporter->SetWireframe();
|
---|
658 | exporter->ExportBox(vbox);
|
---|
659 | exporter->SetFilled();
|
---|
660 | exporter->ExportViewCell(*it);
|
---|
661 | }
|
---|
662 |
|
---|
663 | /*vector<KdNode *>::const_iterator it, it_end = beam.mKdNodes.end();
|
---|
664 |
|
---|
665 | for (it = beam.mKdNodes.begin(); it != beam.mKdNodes.end(); ++ it)
|
---|
666 | {
|
---|
667 | exporter->ExportBox(mKdTree->GetBox((*it)));
|
---|
668 | }*/
|
---|
669 | }
|
---|
670 | }
|
---|
671 | /*while (1)
|
---|
672 | { debuggerWidget->repaint();
|
---|
673 | };*/
|
---|
674 | delete exporter;
|
---|
675 | }
|
---|
676 |
|
---|
677 |
|
---|
678 | float
|
---|
679 | VssPreprocessor::GetAvgPvsSize(VssTree *tree,
|
---|
680 | const vector<AxisAlignedBox3> &viewcells
|
---|
681 | )
|
---|
682 | {
|
---|
683 | vector<AxisAlignedBox3>::const_iterator it, it_end = viewcells.end();
|
---|
684 |
|
---|
685 | int sum = 0;
|
---|
686 | for (it = viewcells.begin(); it != it_end; ++ it)
|
---|
687 | sum += tree->GetPvsSize(*it);
|
---|
688 |
|
---|
689 | return sum/(float)viewcells.size();
|
---|
690 | }
|
---|
691 |
|
---|
692 | bool
|
---|
693 | VssPreprocessor::ComputeVisibility()
|
---|
694 | {
|
---|
695 | Debug << "type: vss" << endl;
|
---|
696 |
|
---|
697 | long startTime = GetTime();
|
---|
698 |
|
---|
699 | int totalSamples = 0;
|
---|
700 |
|
---|
701 |
|
---|
702 | AxisAlignedBox3 box(mKdTree->GetBox());
|
---|
703 |
|
---|
704 | if (!useViewspacePlane) {
|
---|
705 | float size = 0.05f;
|
---|
706 | float s = 0.5f - size;
|
---|
707 | float olds = Magnitude(box.Size());
|
---|
708 | box.Enlarge(box.Size()*Vector3(-s));
|
---|
709 | Vector3 translation = Vector3(-olds*0.1f, 0, 0);
|
---|
710 | box.SetMin(box.Min() + translation);
|
---|
711 | box.SetMax(box.Max() + translation);
|
---|
712 | } else {
|
---|
713 |
|
---|
714 | // sample city like heights
|
---|
715 | box.SetMin(1, box.Min(1) + box.Size(1)*0.2f);
|
---|
716 | box.SetMax(1, box.Min(1) + box.Size(1)*0.3f);
|
---|
717 | }
|
---|
718 |
|
---|
719 | if (use2dSampling)
|
---|
720 | box.SetMax(1, box.Min(1));
|
---|
721 |
|
---|
722 | cout << "use view space box=" << mUseViewSpaceBox << endl;
|
---|
723 |
|
---|
724 |
|
---|
725 | if (mUseViewSpaceBox)
|
---|
726 | {
|
---|
727 | //mViewSpaceBox = ConstructViewSpaceBox();
|
---|
728 |
|
---|
729 | if (!mEnlargeViewSpace)
|
---|
730 | {
|
---|
731 | mViewSpaceBox = new AxisAlignedBox3(box);
|
---|
732 | }
|
---|
733 | else
|
---|
734 | {
|
---|
735 | mViewSpaceBox = new AxisAlignedBox3(mKdTree->GetBox());
|
---|
736 |
|
---|
737 | if (0)
|
---|
738 | {
|
---|
739 | // HACK: enlarge in y directon
|
---|
740 | Vector3 size = mViewSpaceBox->Size();
|
---|
741 |
|
---|
742 | size[1] *= 1.25;
|
---|
743 | Vector3 enlarge(size[0] * 0.25f, size[1] * 0.0f, size[2] * 0.25f);
|
---|
744 | //Vector3 enlarge(size[0] * 4.0f, 0.0f, 0.0f);
|
---|
745 |
|
---|
746 | mViewSpaceBox->Enlarge(enlarge);
|
---|
747 | mViewSpaceBox->SetMax(mViewSpaceBox->Max() + enlarge);
|
---|
748 | }
|
---|
749 | else
|
---|
750 | {
|
---|
751 | AxisAlignedBox3 tbox(*mViewSpaceBox);
|
---|
752 |
|
---|
753 | Vector3 size = mViewSpaceBox->Size();
|
---|
754 | tbox.SetMax(0, mViewSpaceBox->Max(0) + size[0] * 0.5);
|
---|
755 | tbox.SetMin(0, mViewSpaceBox->Min(0) + size[0]);
|
---|
756 | *mViewSpaceBox = tbox;
|
---|
757 |
|
---|
758 | // $$ JB temporary
|
---|
759 | /*AxisAlignedBox3 tempbox = *mViewSpaceBox;
|
---|
760 |
|
---|
761 | float s = tempbox.Size(0);
|
---|
762 |
|
---|
763 | tempbox.Scale(0.8f);
|
---|
764 | tempbox.SetMax(0, box.Max(0) + s*0.8f);
|
---|
765 | tempbox.SetMin(0, box.Min(0) + s*0.8f);
|
---|
766 | *mViewSpaceBox = tempbox;*/
|
---|
767 | }
|
---|
768 | }
|
---|
769 | //Debug << "view space box: " << *mViewSpaceBox << endl;
|
---|
770 | }
|
---|
771 | else
|
---|
772 | {
|
---|
773 | mViewSpaceBox = NULL;
|
---|
774 | }
|
---|
775 |
|
---|
776 | AxisAlignedBox3 vbox = mViewSpaceBox ? *mViewSpaceBox : mKdTree->GetBox();
|
---|
777 |
|
---|
778 | mSceneGraph->CollectObjects(&mObjects);
|
---|
779 |
|
---|
780 | //-- load view cells from file if requested
|
---|
781 | if (!mLoadViewCells)
|
---|
782 | {
|
---|
783 | mViewCellsManager->SetViewSpaceBox(vbox);
|
---|
784 | // construct view cells using it's own set of samples
|
---|
785 | mViewCellsManager->Construct(this);
|
---|
786 |
|
---|
787 | //-- several visualizations and statistics
|
---|
788 | Debug << "view cells construction finished: " << endl;
|
---|
789 | mViewCellsManager->PrintStatistics(Debug);
|
---|
790 | }
|
---|
791 | else
|
---|
792 | {
|
---|
793 | VssRayContainer dummies;
|
---|
794 | mViewCellsManager->Visualize(mObjects, dummies);
|
---|
795 | mViewCellsManager->ExportViewCells("test.xml", mViewCellsManager->GetExportPvs(), mObjects);
|
---|
796 | }
|
---|
797 |
|
---|
798 | VssTree *vssTree = NULL;
|
---|
799 |
|
---|
800 |
|
---|
801 | long initialTime = GetTime();
|
---|
802 |
|
---|
803 | if (mLoadInitialSamples)
|
---|
804 | {
|
---|
805 | cout << "Loading samples from file ... ";
|
---|
806 | LoadSamples(mVssRays, mObjects);
|
---|
807 | cout << "finished\n" << endl;
|
---|
808 | totalSamples = (int)mVssRays.size();
|
---|
809 | }
|
---|
810 | else
|
---|
811 | {
|
---|
812 |
|
---|
813 | while (totalSamples < mInitialSamples) {
|
---|
814 | int passContributingSamples = 0;
|
---|
815 | int passSampleContributions = 0;
|
---|
816 | int passSamples = 0;
|
---|
817 |
|
---|
818 | int index = 0;
|
---|
819 |
|
---|
820 | int sampleContributions;
|
---|
821 |
|
---|
822 | int s = Min(mSamplesPerPass, mInitialSamples);
|
---|
823 | for (int k=0; k < s; k++) {
|
---|
824 | // changed by matt
|
---|
825 | Vector3 viewpoint;
|
---|
826 | // viewpoint = GetViewpoint(mViewSpaceBox);
|
---|
827 | mViewCellsManager->GetViewPoint(viewpoint);
|
---|
828 | Vector3 direction = GetDirection(viewpoint, mViewSpaceBox);
|
---|
829 |
|
---|
830 | sampleContributions = CastRay(viewpoint, direction, mVssRays, vbox);
|
---|
831 |
|
---|
832 | if (sampleContributions) {
|
---|
833 | passContributingSamples ++;
|
---|
834 | passSampleContributions += sampleContributions;
|
---|
835 | }
|
---|
836 | passSamples++;
|
---|
837 | totalSamples++;
|
---|
838 | }
|
---|
839 |
|
---|
840 | mPass++;
|
---|
841 | int pvsSize = 0;
|
---|
842 | float avgRayContrib = (passContributingSamples > 0) ?
|
---|
843 | passSampleContributions/(float)passContributingSamples : 0;
|
---|
844 |
|
---|
845 | cout << "#Pass " << mPass << " : t = " << TimeDiff(startTime, GetTime())*1e-3 << "s" << endl;
|
---|
846 | cout << "#TotalSamples=" << totalSamples/1000
|
---|
847 | << "#SampleContributions=" << passSampleContributions << " ("
|
---|
848 | << 100*passContributingSamples/(float)passSamples<<"%)" << " avgPVS="
|
---|
849 | << pvsSize/(float)mObjects.size() << endl
|
---|
850 | << "avg ray contrib=" << avgRayContrib << endl;
|
---|
851 |
|
---|
852 | mStats <<
|
---|
853 | "#Pass\n" <<mPass<<endl<<
|
---|
854 | "#Time\n" << TimeDiff(startTime, GetTime())*1e-3 << endl<<
|
---|
855 | "#TotalSamples\n" << totalSamples<< endl<<
|
---|
856 | "#SampleContributions\n" << passSampleContributions << endl <<
|
---|
857 | "#PContributingSamples\n"<<100*passContributingSamples/(float)passSamples<<endl <<
|
---|
858 | "#AvgPVS\n"<< pvsSize/(float)mObjects.size() << endl <<
|
---|
859 | "#AvgRayContrib\n" << avgRayContrib << endl;
|
---|
860 | }
|
---|
861 |
|
---|
862 | cout << "#totalPvsSize=" << mKdTree->CollectLeafPvs() << endl;
|
---|
863 |
|
---|
864 |
|
---|
865 |
|
---|
866 | }
|
---|
867 |
|
---|
868 |
|
---|
869 | cout << "#totalRayStackSize=" << (int)mVssRays.size() << endl << flush;
|
---|
870 | Debug << (int)mVssRays.size() << " rays generated in "
|
---|
871 | << TimeDiff(initialTime, GetTime()) * 1e-3 << " seconds" << endl;
|
---|
872 |
|
---|
873 | if (mStoreInitialSamples)
|
---|
874 | {
|
---|
875 | cout << "Writing " << (int)mVssRays.size() << " samples to file ... ";
|
---|
876 | ExportSamples(mVssRays);
|
---|
877 | cout << "finished\n" << endl;
|
---|
878 |
|
---|
879 | /*VssRayContainer dummyRays;
|
---|
880 | LoadSamples(dummyRays, mObjects);
|
---|
881 | Debug << "rays " << (int)mVssRays.size() << " " << dummyRays.size() << endl;
|
---|
882 |
|
---|
883 | for (int i = 0; i < (int)mVssRays.size(); ++ i)
|
---|
884 | {
|
---|
885 | Debug << mVssRays[i]->GetOrigin() << " " << mVssRays[i]->GetTermination() << " " << mVssRays[i]->mOriginObject << " " << mVssRays[i]->mTerminationObject << endl;
|
---|
886 | Debug << dummyRays[i]->GetOrigin() << " " << dummyRays[i]->GetTermination() << " " << dummyRays[i]->mOriginObject << " " << dummyRays[i]->mTerminationObject << endl << endl;
|
---|
887 | }*/
|
---|
888 | }
|
---|
889 |
|
---|
890 |
|
---|
891 | //int numExportRays = 2000;
|
---|
892 | int numExportRays = 0;
|
---|
893 |
|
---|
894 | if (numExportRays) {
|
---|
895 | char filename[64];
|
---|
896 | sprintf(filename, "vss-rays-initial.x3d");
|
---|
897 | ExportRays(filename, mVssRays, numExportRays);
|
---|
898 | }
|
---|
899 |
|
---|
900 | vssTree = new VssTree;
|
---|
901 | // viewcells = Construct(mVssRays);
|
---|
902 |
|
---|
903 | vssTree->Construct(mVssRays, mViewSpaceBox);
|
---|
904 | cout<<"VssTree root PVS size = "<<vssTree->GetRootPvsSize()<<endl;
|
---|
905 |
|
---|
906 | ExportRays("kdtree.x3d", mVssRays, 10);
|
---|
907 |
|
---|
908 | if (0)
|
---|
909 | {
|
---|
910 | ExportVssTree("vss-tree-100.x3d", vssTree, Vector3(1,0,0));
|
---|
911 | ExportVssTree("vss-tree-001.x3d", vssTree, Vector3(0,0,1));
|
---|
912 | ExportVssTree("vss-tree-101.x3d", vssTree, Vector3(1,0,1));
|
---|
913 | ExportVssTree("vss-tree-101m.x3d", vssTree, Vector3(-1,0,-1));
|
---|
914 | ExportVssTreeLeaves(vssTree, 10);
|
---|
915 | }
|
---|
916 |
|
---|
917 | // viewcells->UpdatePVS(newVssRays);
|
---|
918 | // get viewcells as kd tree boxes
|
---|
919 | vector<AxisAlignedBox3> kdViewcells;
|
---|
920 | if (0) {
|
---|
921 | vector<KdLeaf *> leaves;
|
---|
922 | mKdTree->CollectLeaves(leaves);
|
---|
923 | vector<KdLeaf *>::const_iterator it;
|
---|
924 | int targetLeaves = 50;
|
---|
925 | float prob = targetLeaves/(float)leaves.size();
|
---|
926 | for (it = leaves.begin(); it != leaves.end(); ++it)
|
---|
927 | if (RandomValue(0.0f,1.0f) < prob)
|
---|
928 | kdViewcells.push_back(mKdTree->GetBox(*it));
|
---|
929 |
|
---|
930 | float avgPvs = GetAvgPvsSize(vssTree, kdViewcells);
|
---|
931 | cout<<"Initial average PVS size = "<<avgPvs<<endl;
|
---|
932 | }
|
---|
933 |
|
---|
934 |
|
---|
935 | int samples = 0;
|
---|
936 | int pass = 0;
|
---|
937 |
|
---|
938 |
|
---|
939 | // cast view cell samples
|
---|
940 | while (samples < mVssSamples)
|
---|
941 | {
|
---|
942 |
|
---|
943 | int num = mVssSamplesPerPass;
|
---|
944 | SimpleRayContainer rays;
|
---|
945 | VssRayContainer vssRays;
|
---|
946 |
|
---|
947 | if (!mUseImportanceSampling) {
|
---|
948 | for (int j=0; j < num; j++) {
|
---|
949 | // changed by matt
|
---|
950 | //Vector3 viewpoint = GetViewpoint(mViewSpaceBox);
|
---|
951 | Vector3 viewpoint;
|
---|
952 | mViewCellsManager->GetViewPoint(viewpoint);
|
---|
953 | Vector3 direction = GetDirection(viewpoint, mViewSpaceBox);
|
---|
954 | rays.push_back(SimpleRay(viewpoint, direction));
|
---|
955 | }
|
---|
956 | } else {
|
---|
957 | num = GenerateImportanceRays(vssTree, num, rays);
|
---|
958 | }
|
---|
959 |
|
---|
960 | for (int i=0; i < rays.size(); i++)
|
---|
961 | CastRay(rays[i].mOrigin, rays[i].mDirection, vssRays, vbox);
|
---|
962 |
|
---|
963 | vssTree->AddRays(vssRays);
|
---|
964 |
|
---|
965 | if (0) {
|
---|
966 | int subdivided = vssTree->UpdateSubdivision();
|
---|
967 | cout<<"subdivided leafs = "<<subdivided<<endl;
|
---|
968 | }
|
---|
969 |
|
---|
970 | float avgPvs = GetAvgPvsSize(vssTree, kdViewcells);
|
---|
971 | cout<<"Average PVS size = "<<avgPvs<<endl;
|
---|
972 |
|
---|
973 | /// compute view cell contribution of rays
|
---|
974 | mViewCellsManager->ComputeSampleContributions(vssRays, true, false);
|
---|
975 |
|
---|
976 | if (numExportRays) {
|
---|
977 | char filename[64];
|
---|
978 | if (mUseImportanceSampling)
|
---|
979 | sprintf(filename, "vss-rays-i%04d.x3d", pass);
|
---|
980 | else
|
---|
981 | sprintf(filename, "vss-rays-%04d.x3d", pass);
|
---|
982 |
|
---|
983 | ExportRays(filename, vssRays, numExportRays);
|
---|
984 | }
|
---|
985 |
|
---|
986 | samples+=num;
|
---|
987 | float pvs = vssTree->GetAvgPvsSize();
|
---|
988 | cout<<"*****************************\n";
|
---|
989 | cout<<samples<<" avgPVS ="<<pvs<<endl;
|
---|
990 | cout<<"VssTree root PVS size = "<<vssTree->GetRootPvsSize()<<endl;
|
---|
991 | cout<<"*****************************\n";
|
---|
992 | // if (samples >= mVssSamples) break;
|
---|
993 | pass ++;
|
---|
994 | }
|
---|
995 |
|
---|
996 | if (mTestBeamSampling && mUseGlRenderer)
|
---|
997 | {
|
---|
998 | TestBeamCasting(vssTree, mViewCellsManager, mObjects);
|
---|
999 | }
|
---|
1000 |
|
---|
1001 | if (0) Debug << vssTree->stat << endl;
|
---|
1002 |
|
---|
1003 | if (0)
|
---|
1004 | {
|
---|
1005 | VssRayContainer viewCellRays;
|
---|
1006 | // compute rays used for view cells construction
|
---|
1007 | const int numRays = mViewCellsManager->GetVisualizationSamples();
|
---|
1008 | vssTree->CollectRays(viewCellRays, numRays);
|
---|
1009 | }
|
---|
1010 |
|
---|
1011 | //-- render simulation after merge
|
---|
1012 | cout << "\nevaluating bsp view cells render time after sampling ... ";
|
---|
1013 | Debug << "\nStatistics after sampling: " << endl;
|
---|
1014 |
|
---|
1015 | mRenderSimulator->RenderScene();
|
---|
1016 | SimulationStatistics ss;
|
---|
1017 | mRenderSimulator->GetStatistics(ss);
|
---|
1018 |
|
---|
1019 | cout << " finished" << endl;
|
---|
1020 | cout << ss << endl;
|
---|
1021 | Debug << ss << endl;
|
---|
1022 |
|
---|
1023 | delete vssTree;
|
---|
1024 |
|
---|
1025 | return true;
|
---|
1026 | }
|
---|
1027 |
|
---|
1028 | } |
---|