1 | // ================================================================
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2 | // $Id$
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3 | // ****************************************************************
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4 | //
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5 | // Initial coding by
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6 | /**
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7 | @author Jiri Bittner
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8 | */
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9 |
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10 | #ifndef __VSSTREE_H__
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11 | #define __VSSTREE_H__
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12 |
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13 | // Standard headers
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14 | #include <iomanip>
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15 | #include <vector>
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16 | #include <functional>
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17 | #include <stack>
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18 |
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19 |
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20 | // User headers
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21 | #include "VssRay.h"
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22 | #include "AxisAlignedBox3.h"
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23 |
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24 |
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25 | #define USE_KDNODE_VECTORS 1
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26 | #define _RSS_STATISTICS
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27 | #define _RSS_TRAVERSAL_STATISTICS
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28 |
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29 |
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30 | #include "Statistics.h"
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31 | #include "Ray.h"
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32 |
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33 | // --------------------------------------------------------------
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34 | // Static statistics for kd-tree search
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35 | // --------------------------------------------------------------
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36 | class VssStatistics :
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37 | public StatisticsBase
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38 | {
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39 | public:
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40 | // total number of nodes
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41 | int nodes;
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42 | // number of splits along each of the axes
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43 | int splits[7];
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44 | // totals number of rays
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45 | int rays;
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46 | // initial size of the pvs
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47 | int initialPvsSize;
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48 | // total number of query domains
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49 | int queryDomains;
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50 | // total number of ray references
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51 | int rayRefs;
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52 |
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53 | // max depth nodes
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54 | int maxDepthNodes;
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55 | // max depth nodes
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56 | int minPvsNodes;
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57 | int minRaysNodes;
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58 | // max ray contribution nodes
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59 | int maxRayContribNodes;
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60 | // max depth nodes
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61 | int minSizeNodes;
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62 | int maxCostRatioNodes;
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63 |
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64 | // max number of rays per node
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65 | int maxRayRefs;
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66 | // number of dynamically added ray refs
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67 | int addedRayRefs;
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68 | // number of dynamically removed ray refs
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69 | int removedRayRefs;
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70 |
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71 | // Constructor
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72 | VssStatistics() {
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73 | Reset();
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74 | }
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75 |
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76 | int Nodes() const {return nodes;}
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77 | int Interior() const { return nodes/2; }
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78 | int Leaves() const { return (nodes/2) + 1; }
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79 |
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80 | void Reset() {
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81 | nodes = 0;
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82 | for (int i=0; i<7; i++)
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83 | splits[i] = 0;
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84 | rays = queryDomains = 0;
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85 | rayRefs = 0;
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86 | maxDepthNodes = 0;
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87 | minPvsNodes = 0;
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88 | minRaysNodes = 0;
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89 | maxRayRefs = 0;
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90 | addedRayRefs = removedRayRefs = 0;
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91 | initialPvsSize = 0;
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92 | maxRayContribNodes = 0;
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93 | minSizeNodes = 0;
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94 | maxCostRatioNodes = 0;
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95 | }
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96 |
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97 |
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98 | void
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99 | Print(ostream &app) const;
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100 |
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101 | friend ostream &operator<<(ostream &s, const VssStatistics &stat) {
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102 | stat.Print(s);
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103 | return s;
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104 | }
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105 |
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106 | };
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107 |
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108 |
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109 | // --------------------------------------------------------------
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110 | // For sorting rays
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111 | // --------------------------------------------------------------
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112 | struct SortableEntry
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113 | {
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114 | enum EType {
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115 | ERayMin,
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116 | ERayMax
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117 | };
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118 |
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119 | int type;
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120 | float value;
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121 | void *data;
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122 |
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123 | SortableEntry() {}
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124 | SortableEntry(const int t, const float v, void *d):type(t),
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125 | value(v),
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126 | data(d) {}
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127 |
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128 | friend bool operator<(const SortableEntry &a, const SortableEntry &b) {
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129 | return a.value < b.value;
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130 | }
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131 | };
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132 |
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133 |
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134 | class VssTreeInterior;
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135 |
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136 |
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137 | // --------------------------------------------------------------
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138 | // KD-tree node - abstract class
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139 | // --------------------------------------------------------------
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140 | class VssTreeNode
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141 | {
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142 | public:
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143 |
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144 | #define USE_FIXEDPOINT_T 0
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145 |
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146 | struct RayInfo
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147 | {
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148 | // pointer to the actual ray
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149 | VssRay *mRay;
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150 |
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151 | // endpoints - do we need them?
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152 | #if USE_FIXEDPOINT_T
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153 | short mMinT, mMaxT;
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154 | #else
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155 | float mMinT, mMaxT;
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156 | #endif
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157 |
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158 | RayInfo():mRay(NULL) {}
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159 |
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160 | RayInfo(VssRay *r):mRay(r), mMinT(0),
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161 | #if USE_FIXEDPOINT_T
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162 | #define FIXEDPOINT_ONE 0x7FFE
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163 | // mMaxT(0xFFFF)
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164 | mMaxT(FIXEDPOINT_ONE)
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165 | #else
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166 | mMaxT(1.0f)
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167 | #endif
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168 | {}
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169 |
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170 | RayInfo(VssRay *r,
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171 | const float _min,
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172 | const float _max
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173 | ):mRay(r) {
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174 | SetMinT(_min);
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175 | SetMaxT(_max);
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176 | }
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177 |
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178 | RayInfo(VssRay *r,
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179 | const short _min,
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180 | const float _max
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181 | ):mRay(r), mMinT(_min) {
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182 | SetMaxT(_max);
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183 | }
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184 |
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185 | RayInfo(VssRay *r,
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186 | const float _min,
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187 | const short _max
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188 | ):mRay(r), mMaxT(_max) {
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189 | SetMinT(_min);
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190 | }
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191 |
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192 | enum {
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193 | SOURCE_RAY = 0,
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194 | TERMINATION_RAY,
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195 | PASSING_RAY,
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196 | CONTAINED_RAY
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197 | };
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198 |
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199 | int GetRayClass() const {
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200 |
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201 | bool startsBefore = GetMinT() > 0.0f;
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202 | bool terminatesAfter = GetMaxT() < 1.0f;
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203 |
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204 | if (startsBefore && terminatesAfter)
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205 | return PASSING_RAY;
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206 |
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207 | if (!startsBefore && !terminatesAfter)
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208 | return CONTAINED_RAY;
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209 |
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210 | if (!startsBefore)
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211 | return SOURCE_RAY;
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212 |
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213 | return TERMINATION_RAY;
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214 | }
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215 |
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216 | friend bool operator<(const RayInfo &a, const RayInfo &b) {
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217 | return a.mRay < b.mRay;
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218 | }
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219 |
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220 |
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221 | float ExtrapOrigin(const int axis) const {
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222 | return mRay->GetOrigin(axis) + GetMinT()*mRay->GetDir(axis);
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223 | }
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224 |
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225 | float ExtrapTermination(const int axis) const {
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226 | return mRay->GetOrigin(axis) + GetMaxT()*mRay->GetDir(axis);
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227 | }
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228 |
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229 | #if USE_FIXEDPOINT_T
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230 | float GetMinT () const { return mMinT/(float)(FIXEDPOINT_ONE); }
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231 | float GetMaxT () const { return mMaxT/(float)(FIXEDPOINT_ONE); }
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232 |
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233 | void SetMinT (const float t) {
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234 | mMinT = (short) (t*(float)(FIXEDPOINT_ONE));
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235 | }
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236 |
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237 | void SetMaxT (const float t) {
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238 | mMaxT = (short) (t*(float)(FIXEDPOINT_ONE));
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239 | mMaxT++;
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240 | // if (mMaxT!=0xFFFF)
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241 | // mMaxT++;
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242 | }
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243 | #else
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244 | float GetMinT () const { return mMinT; }
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245 | float GetMaxT () const { return mMaxT; }
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246 |
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247 | void SetMinT (const float t) { mMinT = t; }
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248 | void SetMaxT (const float t) { mMaxT = t; }
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249 | #endif
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250 |
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251 |
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252 | int ComputeRayIntersection(const int axis,
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253 | const float position,
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254 | float &t
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255 | ) const {
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256 |
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257 | // intersect the ray with the plane
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258 | float denom = mRay->GetDir(axis);
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259 |
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260 | if (fabs(denom) < 1e-20)
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261 | //if (denom == 0.0f)
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262 | return (mRay->GetOrigin(axis) > position) ? 1 : -1;
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263 |
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264 | t = (position - mRay->GetOrigin(axis))/denom;
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265 |
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266 | if (t < GetMinT())
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267 | return (denom > 0) ? 1 : -1;
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268 |
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269 | if (t > GetMaxT())
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270 | return (denom > 0) ? -1 : 1;
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271 |
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272 | return 0;
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273 | }
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274 |
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275 |
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276 | };
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277 |
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278 |
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279 | typedef vector<RayInfo> RayInfoContainer;
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280 |
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281 | enum { EInterior, ELeaf };
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282 |
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283 | /////////////////////////////////
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284 | // The actual data goes here
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285 |
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286 | // link to the parent
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287 | VssTreeInterior *parent;
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288 |
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289 | enum {SPLIT_X=0, SPLIT_Y, SPLIT_Z, SPLIT_DIRX, SPLIT_DIRY, SPLIT_DIRZ};
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290 |
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291 | // splitting axis
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292 | char axis;
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293 |
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294 | // depth
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295 | unsigned char depth;
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296 |
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297 | // short depth;
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298 | //
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299 | /////////////////////////////////
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300 |
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301 | inline VssTreeNode(VssTreeInterior *p);
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302 |
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303 |
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304 | virtual ~VssTreeNode() {};
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305 | virtual int Type() const = 0;
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306 |
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307 |
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308 | bool IsLeaf() const { return axis == -1; }
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309 |
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310 | virtual void Print(ostream &s) const = 0;
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311 |
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312 | virtual int GetAccessTime() {
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313 | return 0x7FFFFFF;
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314 | }
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315 |
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316 |
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317 |
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318 | };
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319 |
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320 | // --------------------------------------------------------------
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321 | // KD-tree node - interior node
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322 | // --------------------------------------------------------------
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323 | class VssTreeInterior :
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324 | public VssTreeNode
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325 | {
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326 | public:
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327 | // plane in local modelling coordinates
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328 | float position;
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329 |
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330 | // pointers to children
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331 | VssTreeNode *back, *front;
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332 |
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333 | // the bbox of the node
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334 | AxisAlignedBox3 bbox;
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335 |
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336 | // the bbox of the node
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337 | AxisAlignedBox3 dirBBox;
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338 |
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339 | // data for caching
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340 | long accesses;
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341 | long lastAccessTime;
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342 |
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343 | VssTreeInterior(VssTreeInterior *p):VssTreeNode(p),
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344 | back(NULL),
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345 | front(NULL),
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346 | accesses(0),
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347 | lastAccessTime(-1)
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348 | { }
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349 |
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350 | virtual int GetAccessTime() {
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351 | return lastAccessTime;
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352 | }
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353 |
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354 | void SetupChildLinks(VssTreeNode *b, VssTreeNode *f) {
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355 | back = b;
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356 | front = f;
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357 | b->parent = f->parent = this;
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358 | }
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359 |
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360 | void ReplaceChildLink(VssTreeNode *oldChild, VssTreeNode *newChild) {
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361 | if (back == oldChild)
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362 | back = newChild;
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363 | else
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364 | front = newChild;
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365 | }
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366 |
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367 | virtual int Type() const { return EInterior; }
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368 |
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369 | virtual ~VssTreeInterior() {
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370 | if (back)
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371 | delete back;
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372 | if (front)
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373 | delete front;
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374 | }
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375 |
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376 | virtual void Print(ostream &s) const {
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377 | if (axis == 0)
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378 | s<<"x ";
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379 | else
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380 | if (axis == 1)
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381 | s<<"y ";
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382 | else
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383 | s<<"z ";
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384 | s<<position<<" ";
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385 | back->Print(s);
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386 | front->Print(s);
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387 | }
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388 |
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389 |
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390 |
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391 | int ComputeRayIntersection(const RayInfo &rayData,
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392 | float &t
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393 | ) {
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394 | return rayData.ComputeRayIntersection(axis, position, t);
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395 | }
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396 |
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397 | };
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398 |
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399 |
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400 | // --------------------------------------------------------------
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401 | // KD-tree node - leaf node
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402 | // --------------------------------------------------------------
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403 | class VssTreeLeaf :
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404 | public VssTreeNode
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405 | {
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406 | private:
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407 | int mPvsSize;
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408 | public:
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409 | static int mailID;
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410 | int mailbox;
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411 |
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412 | RayInfoContainer rays;
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413 | bool mValidPvs;
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414 |
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415 | VssTreeLeaf(VssTreeInterior *p,
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416 | const int nRays
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417 | ):VssTreeNode(p), rays(), mPvsSize(0), mValidPvs(false) {
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418 | rays.reserve(nRays);
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419 | }
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420 |
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421 | virtual ~VssTreeLeaf() { }
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422 |
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423 | virtual int Type() const { return ELeaf; }
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424 |
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425 | virtual void Print(ostream &s) const {
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426 | s<<endl<<"L: r="<<rays.size()<<endl;
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427 | };
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428 |
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429 | void AddRay(const RayInfo &data) {
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430 | mValidPvs = false;
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431 | rays.push_back(data);
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432 | data.mRay->Ref();
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433 | }
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434 |
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435 | int GetPvsSize() const {
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436 | return mPvsSize;
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437 | }
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438 | void SetPvsSize(const int s) {
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439 | mPvsSize = s;
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440 | }
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441 |
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442 | void
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443 | UpdatePvsSize();
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444 |
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445 | void Mail() { mailbox = mailID; }
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446 | static void NewMail() { mailID++; }
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447 | bool Mailed() const { return mailbox == mailID; }
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448 |
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449 | bool Mailed(const int mail) {
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450 | return mailbox >= mailID + mail;
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451 | }
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452 |
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453 | float GetAvgRayContribution() const {
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454 | return GetPvsSize()/((float)rays.size() + Limits::Small);
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455 | }
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456 |
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457 | float GetSqrRayContribution() const {
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458 | return sqr(GetPvsSize()/((float)rays.size() + Limits::Small));
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459 | }
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460 |
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461 | // comparator for the
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462 | struct less_contribution : public
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463 | binary_function<const VssTreeLeaf *, const VssTreeLeaf *, bool> {
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464 |
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465 | bool operator()(const VssTreeLeaf * a, const VssTreeLeaf *b) {
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466 | return a->GetAvgRayContribution() < b->GetAvgRayContribution();
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467 | }
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468 | };
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469 |
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470 | struct greater_contribution : public
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471 | binary_function<const VssTreeLeaf *, const VssTreeLeaf *, bool> {
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472 |
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473 | bool operator()(const VssTreeLeaf * a, const VssTreeLeaf *b) {
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474 | return a->GetAvgRayContribution() > b->GetAvgRayContribution();
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475 | }
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476 | };
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477 |
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478 | friend bool GreaterContribution(const VssTreeLeaf * a, const VssTreeLeaf *b) {
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479 | return a->GetAvgRayContribution() > b->GetAvgRayContribution();
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480 | }
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481 |
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482 | };
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483 |
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484 | // Inline functions
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485 | inline
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486 | VssTreeNode::VssTreeNode(VssTreeInterior *p):
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487 | parent(p), axis(-1), depth(p ? p->depth + 1 : 0) {}
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488 |
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489 |
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490 |
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491 | // ---------------------------------------------------------------
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492 | // Main LSDS search class
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493 | // ---------------------------------------------------------------
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494 | class VssTree
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495 | {
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496 | struct TraversalData
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497 | {
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498 | VssTreeNode *node;
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499 | AxisAlignedBox3 bbox;
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500 | int depth;
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501 | float priority;
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502 |
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503 | TraversalData() {}
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504 |
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505 | TraversalData(VssTreeNode *n, const float p):
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506 | node(n), priority(p)
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507 | {}
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508 |
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509 | TraversalData(VssTreeNode *n,
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510 | const AxisAlignedBox3 &b,
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511 | const int d):
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512 | node(n), bbox(b), depth(d) {}
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513 |
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514 |
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515 | // comparator for the
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516 | struct less_priority : public
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517 | binary_function<const TraversalData, const TraversalData, bool> {
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518 |
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519 | bool operator()(const TraversalData a, const TraversalData b) {
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520 | return a.priority < b.priority;
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521 | }
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522 |
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523 | };
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524 |
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525 | // ~TraversalData() {}
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526 | // TraversalData(const TraversalData &s):node(s.node), bbox(s.bbox), depth(s.depth) {}
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527 |
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528 | friend bool operator<(const TraversalData &a,
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529 | const TraversalData &b) {
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530 | // return a.node->queries.size() < b.node->queries.size();
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531 | VssTreeLeaf *leafa = (VssTreeLeaf *) a.node;
|
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532 | VssTreeLeaf *leafb = (VssTreeLeaf *) b.node;
|
---|
533 | #if 0
|
---|
534 | return
|
---|
535 | leafa->rays.size()*a.bbox.GetVolume()
|
---|
536 | <
|
---|
537 | leafb->rays.size()*b.bbox.GetVolume();
|
---|
538 | #endif
|
---|
539 | #if 1
|
---|
540 | return
|
---|
541 | leafa->GetPvsSize()*a.bbox.GetVolume()
|
---|
542 | <
|
---|
543 | leafb->GetPvsSize()*b.bbox.GetVolume();
|
---|
544 | #endif
|
---|
545 | #if 0
|
---|
546 | return
|
---|
547 | leafa->GetPvsSize()
|
---|
548 | <
|
---|
549 | leafb->GetPvsSize();
|
---|
550 | #endif
|
---|
551 | #if 0
|
---|
552 | return
|
---|
553 | leafa->GetPvsSize()/(leafa->rays.size()+1)
|
---|
554 | >
|
---|
555 | leafb->GetPvsSize()/(leafb->rays.size()+1);
|
---|
556 | #endif
|
---|
557 | #if 0
|
---|
558 | return
|
---|
559 | leafa->GetPvsSize()*leafa->rays.size()
|
---|
560 | <
|
---|
561 | leafb->GetPvsSize()*leafb->rays.size();
|
---|
562 | #endif
|
---|
563 | }
|
---|
564 | };
|
---|
565 |
|
---|
566 | // simplified data for ray traversal only...
|
---|
567 |
|
---|
568 | struct RayTraversalData {
|
---|
569 |
|
---|
570 | VssTreeNode::RayInfo rayData;
|
---|
571 | VssTreeNode *node;
|
---|
572 |
|
---|
573 | RayTraversalData() {}
|
---|
574 | RayTraversalData(VssTreeNode *n,
|
---|
575 | const VssTreeNode::RayInfo &data):
|
---|
576 | rayData(data), node(n) {}
|
---|
577 | };
|
---|
578 |
|
---|
579 | public:
|
---|
580 | /////////////////////////////
|
---|
581 | // The core pointer
|
---|
582 | VssTreeNode *root;
|
---|
583 |
|
---|
584 | /////////////////////////////
|
---|
585 | // Basic properties
|
---|
586 |
|
---|
587 | // total number of nodes of the tree
|
---|
588 | int nodes;
|
---|
589 | // axis aligned bounding box of the scene
|
---|
590 | AxisAlignedBox3 bbox;
|
---|
591 |
|
---|
592 | // axis aligned bounding box of directions
|
---|
593 | AxisAlignedBox3 dirBBox;
|
---|
594 |
|
---|
595 | /////////////////////////////
|
---|
596 | // Construction parameters
|
---|
597 |
|
---|
598 | // epsilon used for the construction
|
---|
599 | float epsilon;
|
---|
600 |
|
---|
601 | // ratio between traversal and intersection costs
|
---|
602 | float ct_div_ci;
|
---|
603 | // max depth of the tree
|
---|
604 | int termMaxDepth;
|
---|
605 | // minimal ratio of the volume of the cell and the query volume
|
---|
606 | float termMinSize;
|
---|
607 |
|
---|
608 | // minimal pvs per node to still get subdivided
|
---|
609 | int termMinPvs;
|
---|
610 |
|
---|
611 | // minimal ray number per node to still get subdivided
|
---|
612 | int termMinRays;
|
---|
613 |
|
---|
614 | // maximal cost ration to subdivide a node
|
---|
615 | float termMaxCostRatio;
|
---|
616 |
|
---|
617 | // maximal contribution per ray to subdivide the node
|
---|
618 | float termMaxRayContribution;
|
---|
619 |
|
---|
620 |
|
---|
621 | // randomized construction
|
---|
622 | bool randomize;
|
---|
623 |
|
---|
624 | // type of the splitting to use fo rthe tree construction
|
---|
625 | enum {ESplitRegular, ESplitHeuristic };
|
---|
626 | int splitType;
|
---|
627 |
|
---|
628 | // maximal size of the box on which the refdir splitting can be performed
|
---|
629 | // (relative to the scene bbox
|
---|
630 | float refDirBoxMaxSize;
|
---|
631 |
|
---|
632 | // maximum alovable memory in MB
|
---|
633 | float maxTotalMemory;
|
---|
634 |
|
---|
635 | // maximum alovable memory for static kd tree in MB
|
---|
636 | float maxStaticMemory;
|
---|
637 |
|
---|
638 | // this is used during the construction depending
|
---|
639 | // on the type of the tree and queries...
|
---|
640 | float maxMemory;
|
---|
641 |
|
---|
642 |
|
---|
643 | // minimal acess time for collapse
|
---|
644 | int accessTimeThreshold;
|
---|
645 |
|
---|
646 | // minimal depth at which to perform collapse
|
---|
647 | int minCollapseDepth;
|
---|
648 |
|
---|
649 |
|
---|
650 | // reusable array of split candidates
|
---|
651 | vector<SortableEntry> *splitCandidates;
|
---|
652 | /////////////////////////////
|
---|
653 |
|
---|
654 | VssStatistics stat;
|
---|
655 |
|
---|
656 |
|
---|
657 | VssTree();
|
---|
658 | virtual ~VssTree();
|
---|
659 |
|
---|
660 | virtual void
|
---|
661 | Construct(
|
---|
662 | VssRayContainer &rays,
|
---|
663 | AxisAlignedBox3 *forcedBoundingBox = NULL
|
---|
664 | );
|
---|
665 |
|
---|
666 | // incemental construction
|
---|
667 | virtual void UpdateRays(VssRayContainer &remove,
|
---|
668 | VssRayContainer &add
|
---|
669 | );
|
---|
670 |
|
---|
671 | virtual void AddRays(
|
---|
672 | VssRayContainer &add
|
---|
673 | )
|
---|
674 | {
|
---|
675 | VssRayContainer remove;
|
---|
676 | UpdateRays(remove, add);
|
---|
677 | }
|
---|
678 |
|
---|
679 |
|
---|
680 |
|
---|
681 | VssTreeNode *
|
---|
682 | Locate(const Vector3 &v);
|
---|
683 |
|
---|
684 | VssTreeNode *
|
---|
685 | SubdivideNode(VssTreeLeaf *leaf,
|
---|
686 | const AxisAlignedBox3 &box,
|
---|
687 | AxisAlignedBox3 &backBox,
|
---|
688 | AxisAlignedBox3 &frontBox
|
---|
689 | );
|
---|
690 |
|
---|
691 | VssTreeNode *
|
---|
692 | Subdivide(const TraversalData &tdata);
|
---|
693 |
|
---|
694 | int
|
---|
695 | SelectPlane(VssTreeLeaf *leaf,
|
---|
696 | const AxisAlignedBox3 &box,
|
---|
697 | float &position,
|
---|
698 | int &raysBack,
|
---|
699 | int &raysFront,
|
---|
700 | int &pvsBack,
|
---|
701 | int &pvsFront
|
---|
702 | );
|
---|
703 |
|
---|
704 | void
|
---|
705 | SortSplitCandidates(
|
---|
706 | VssTreeLeaf *node,
|
---|
707 | const int axis
|
---|
708 | );
|
---|
709 |
|
---|
710 |
|
---|
711 | // return memory usage in MB
|
---|
712 | float GetMemUsage() const {
|
---|
713 | return
|
---|
714 | (sizeof(VssTree) +
|
---|
715 | stat.Leaves()*sizeof(VssTreeLeaf) +
|
---|
716 | stat.Interior()*sizeof(VssTreeInterior) +
|
---|
717 | stat.rayRefs*sizeof(VssTreeNode::RayInfo))/(1024.0f*1024.0f);
|
---|
718 | }
|
---|
719 |
|
---|
720 | float GetRayMemUsage() const {
|
---|
721 | return
|
---|
722 | stat.rays*(sizeof(VssRay))/(1024.0f*1024.0f);
|
---|
723 | }
|
---|
724 |
|
---|
725 | float
|
---|
726 | BestCostRatioHeuristic(
|
---|
727 | VssTreeLeaf *node,
|
---|
728 | int &axis,
|
---|
729 | float &position,
|
---|
730 | int &raysBack,
|
---|
731 | int &raysFront,
|
---|
732 | int &pvsBack,
|
---|
733 | int &pvsFront
|
---|
734 | );
|
---|
735 |
|
---|
736 | float
|
---|
737 | BestCostRatioRegular(
|
---|
738 | VssTreeLeaf *node,
|
---|
739 | int &axis,
|
---|
740 | float &position,
|
---|
741 | int &raysBack,
|
---|
742 | int &raysFront,
|
---|
743 | int &pvsBack,
|
---|
744 | int &pvsFront
|
---|
745 |
|
---|
746 | );
|
---|
747 |
|
---|
748 | float
|
---|
749 | EvalCostRatio(
|
---|
750 | VssTreeLeaf *node,
|
---|
751 | const int axis,
|
---|
752 | const float position,
|
---|
753 | int &raysBack,
|
---|
754 | int &raysFront,
|
---|
755 | int &pvsBack,
|
---|
756 | int &pvsFront
|
---|
757 | );
|
---|
758 |
|
---|
759 | AxisAlignedBox3 GetBBox(const VssTreeNode *node) {
|
---|
760 | if (node->parent == NULL)
|
---|
761 | return bbox;
|
---|
762 |
|
---|
763 | if (!node->IsLeaf())
|
---|
764 | return ((VssTreeInterior *)node)->bbox;
|
---|
765 |
|
---|
766 | if (node->parent->axis >= 3)
|
---|
767 | return node->parent->bbox;
|
---|
768 |
|
---|
769 | AxisAlignedBox3 box(node->parent->bbox);
|
---|
770 | if (node->parent->front == node)
|
---|
771 | box.SetMin(node->parent->axis, node->parent->position);
|
---|
772 | else
|
---|
773 | box.SetMax(node->parent->axis, node->parent->position);
|
---|
774 | return box;
|
---|
775 | }
|
---|
776 |
|
---|
777 | AxisAlignedBox3 GetDirBBox(const VssTreeNode *node) {
|
---|
778 |
|
---|
779 | if (node->parent == NULL)
|
---|
780 | return dirBBox;
|
---|
781 |
|
---|
782 | if (!node->IsLeaf() )
|
---|
783 | return ((VssTreeInterior *)node)->dirBBox;
|
---|
784 |
|
---|
785 | if (node->parent->axis < 3)
|
---|
786 | return node->parent->dirBBox;
|
---|
787 |
|
---|
788 | AxisAlignedBox3 dBBox(node->parent->dirBBox);
|
---|
789 |
|
---|
790 | if (node->parent->front == node)
|
---|
791 | dBBox.SetMin(node->parent->axis - 3, node->parent->position);
|
---|
792 | else
|
---|
793 | dBBox.SetMax(node->parent->axis - 3, node->parent->position);
|
---|
794 | return dBBox;
|
---|
795 | }
|
---|
796 |
|
---|
797 | int
|
---|
798 | ReleaseMemory(const int time);
|
---|
799 |
|
---|
800 | int
|
---|
801 | CollapseSubtree(VssTreeNode *node, const int time);
|
---|
802 |
|
---|
803 | void
|
---|
804 | CountAccess(VssTreeInterior *node, const long time) {
|
---|
805 | node->accesses++;
|
---|
806 | node->lastAccessTime = time;
|
---|
807 | }
|
---|
808 |
|
---|
809 | VssTreeNode *
|
---|
810 | SubdivideLeaf(
|
---|
811 | VssTreeLeaf *leaf
|
---|
812 | );
|
---|
813 |
|
---|
814 | void
|
---|
815 | RemoveRay(VssRay *ray,
|
---|
816 | vector<VssTreeLeaf *> *affectedLeaves,
|
---|
817 | const bool removeAllScheduledRays
|
---|
818 | );
|
---|
819 |
|
---|
820 | // void
|
---|
821 | // AddRay(VssRay *ray);
|
---|
822 | void
|
---|
823 | AddRay(VssTreeNode::RayInfo &info);
|
---|
824 |
|
---|
825 | void
|
---|
826 | TraverseInternalNode(
|
---|
827 | RayTraversalData &data,
|
---|
828 | stack<RayTraversalData> &tstack);
|
---|
829 |
|
---|
830 | void
|
---|
831 | EvaluateLeafStats(const TraversalData &data);
|
---|
832 |
|
---|
833 |
|
---|
834 | int
|
---|
835 | GetRootPvsSize() const {
|
---|
836 | return GetPvsSize(root, bbox);
|
---|
837 | }
|
---|
838 |
|
---|
839 | int
|
---|
840 | GetPvsSize(VssTreeNode *node, const AxisAlignedBox3 &box) const;
|
---|
841 |
|
---|
842 | void
|
---|
843 | GetRayContributionStatistics(
|
---|
844 | float &minRayContribution,
|
---|
845 | float &maxRayContribution,
|
---|
846 | float &avgRayContribution
|
---|
847 | );
|
---|
848 |
|
---|
849 | int
|
---|
850 | GenerateRays(const float ratioPerLeaf,
|
---|
851 | SimpleRayContainer &rays);
|
---|
852 |
|
---|
853 | int
|
---|
854 | GenerateRays(const int numberOfRays,
|
---|
855 | const int numberOfLeaves,
|
---|
856 | SimpleRayContainer &rays);
|
---|
857 |
|
---|
858 | float
|
---|
859 | GetAvgPvsSize();
|
---|
860 |
|
---|
861 | int
|
---|
862 | UpdateSubdivision();
|
---|
863 |
|
---|
864 | bool
|
---|
865 | TerminationCriteriaSatisfied(VssTreeLeaf *leaf);
|
---|
866 |
|
---|
867 | void
|
---|
868 | CollectLeaves(vector<VssTreeLeaf *> &leaves);
|
---|
869 |
|
---|
870 | bool
|
---|
871 | ClipRay(
|
---|
872 | VssTreeNode::RayInfo &rayInfo,
|
---|
873 | const AxisAlignedBox3 &box
|
---|
874 | );
|
---|
875 |
|
---|
876 |
|
---|
877 | };
|
---|
878 |
|
---|
879 |
|
---|
880 | #endif // __LSDS_KDTREE_H__
|
---|
881 |
|
---|