1 | #ifndef __KDINTERSECTABLE_H
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2 | #define __KDINTERSECTABLE_H
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3 |
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4 | #include "AxisAlignedBox3.h"
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5 | #include "Intersectable.h"
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6 | #include "Triangle3.h"
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7 |
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8 |
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9 | namespace GtpVisibilityPreprocessor {
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10 |
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11 |
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12 | struct VssRayContainer;
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13 | class KdNode;
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14 | //class BvhNode;
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15 | class BvhLeaf;
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16 | class Ray;
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17 |
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18 | struct Face;
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19 | struct Triangle3;
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20 |
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21 | class KdTree;
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22 |
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23 |
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24 | /**
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25 | Wrapper used for creating a PVS compliant intersectable.
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26 | */
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27 | template<typename T>
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28 | class IntersectableWrapper: public Intersectable
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29 | {
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30 | public:
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31 | IntersectableWrapper(T item);
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32 |
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33 | /** Returns node associated with this instance.
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34 | */
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35 | T GetItem() const;
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36 | /** See get.
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37 | */
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38 | void SetItem(T item);
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39 |
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40 |
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41 | /////////////////////////////////////////////
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42 | //-- inherited functions from Intersectable
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43 |
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44 | AxisAlignedBox3 GetBox() const;
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45 |
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46 | int CastRay(Ray &ray);
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47 |
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48 | bool IsConvex() const;
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49 | bool IsWatertight() const;
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50 | float IntersectionComplexity();
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51 |
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52 | int NumberOfFaces() const;
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53 |
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54 | int GetRandomSurfacePoint(GtpVisibilityPreprocessor::Vector3 &point,
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55 | GtpVisibilityPreprocessor::Vector3 &normal);
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56 |
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57 | int GetRandomVisibleSurfacePoint(GtpVisibilityPreprocessor::Vector3 &point,
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58 | GtpVisibilityPreprocessor::Vector3 &normal,
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59 | const GtpVisibilityPreprocessor::Vector3 &viewpoint,
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60 | const int maxTries);
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61 |
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62 | ostream &Describe(ostream &s);
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63 |
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64 | int GetRandomEdgePoint(Vector3 &point, Vector3 &normal);
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65 |
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66 |
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67 | protected:
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68 |
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69 | T mItem;
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70 | };
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71 |
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72 |
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73 | template<typename T>
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74 | IntersectableWrapper<T>::IntersectableWrapper(T item):
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75 | Intersectable(), mItem(item)
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76 | {
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77 | }
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78 |
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79 | template<typename T>
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80 | void IntersectableWrapper<T>::SetItem(T item)
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81 | {
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82 | mItem = item;
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83 | }
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84 |
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85 | template<typename T>
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86 | T IntersectableWrapper<T>::GetItem() const
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87 | {
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88 | return mItem;
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89 | }
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90 |
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91 | template<typename T>
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92 | AxisAlignedBox3 IntersectableWrapper<T>::GetBox() const
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93 | { // TODO matt
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94 | return AxisAlignedBox3();
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95 | }
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96 |
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97 | template<typename T>
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98 | int IntersectableWrapper<T>::CastRay(Ray &ray)
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99 | { // TODO matt
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100 | return 0;
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101 | }
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102 |
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103 | template<typename T>
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104 | bool IntersectableWrapper<T>::IsConvex() const
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105 | {
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106 | return true;
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107 | }
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108 |
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109 | template<typename T>
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110 | bool IntersectableWrapper<T>::IsWatertight() const
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111 | {
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112 | return true;
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113 | }
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114 |
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115 |
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116 | template<typename T>
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117 | float IntersectableWrapper<T>::IntersectionComplexity()
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118 | {
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119 | return 1.0f;
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120 | }
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121 |
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122 |
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123 | template<typename T>
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124 | int IntersectableWrapper<T>::NumberOfFaces() const
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125 | {
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126 | return 0;
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127 | }
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128 |
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129 |
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130 | template<typename T>
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131 | int IntersectableWrapper<T>::GetRandomSurfacePoint(Vector3 &point,
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132 | Vector3 &normal)
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133 | {
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134 | return 0;
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135 | }
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136 |
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137 |
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138 | template<typename T>
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139 | int IntersectableWrapper<T>::GetRandomEdgePoint(Vector3 &point,
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140 | Vector3 &normal)
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141 | {
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142 | return 0;
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143 | }
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144 |
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145 |
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146 | template<typename T>
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147 | int IntersectableWrapper<T>::GetRandomVisibleSurfacePoint(Vector3 &point,
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148 | Vector3 &normal,
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149 | const Vector3 &viewpoint,
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150 | const int maxTries)
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151 | {
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152 | return 0;
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153 | }
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154 |
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155 | template<typename T>
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156 | ostream &IntersectableWrapper<T>::Describe(ostream &s)
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157 | {
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158 | s << mItem;
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159 | return s;
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160 | }
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161 |
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162 |
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163 | class KdIntersectable: public IntersectableWrapper<KdNode *>
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164 | {
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165 | public:
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166 | AxisAlignedBox3 mBox;
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167 |
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168 | KdIntersectable(KdNode *item, const AxisAlignedBox3 &box);
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169 |
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170 |
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171 | int Type() const
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172 | {
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173 | return Intersectable::KD_INTERSECTABLE;
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174 | }
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175 | |
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176 |
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177 | AxisAlignedBox3 GetBox() const {
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178 | return mBox;
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179 | } |
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180 | }; |
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181 |
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182 |
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183 | typedef map<KdNode *, KdIntersectable *> KdIntersectableMap;
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184 |
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185 |
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186 | class TriangleIntersectable: public IntersectableWrapper<Triangle3>
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187 | {
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188 | public:
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189 | TriangleIntersectable(Triangle3 item):
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190 | IntersectableWrapper<Triangle3>(item) {}
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191 |
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192 | int CastRay(Ray &ray);
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193 | AxisAlignedBox3 GetBox() const;
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194 | int NumberOfFaces() const;
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195 | Vector3 GetNormal(const int idx) const;
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196 |
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197 | float GetArea() const {return mItem.GetArea();}
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198 | int Type() const
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199 | {
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200 | return Intersectable::TRIANGLE_INTERSECTABLE;
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201 | }
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202 |
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203 | int GetRandomSurfacePoint(Vector3 &point, Vector3 &normal);
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204 |
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205 | int GetRandomVisibleSurfacePoint(Vector3 &point,
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206 | Vector3 &normal,
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207 | const Vector3 &viewpoint,
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208 | const int maxTries);
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209 |
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210 | int GetRandomEdgePoint(Vector3 &point, Vector3 &normal);
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211 |
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212 | };
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213 |
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214 |
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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 | #endif
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