1 | #include <stdio.h>
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2 | #include <string.h>
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3 | #include <math.h>
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4 |
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5 | #include "Foliage.h"
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6 |
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7 |
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8 | //--------------------------------------------------------------------------------------------------------------------------------
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9 | // Void constructor
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10 | // Parameters --> None
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11 | //--------------------------------------------------------------------------------------------------------------------------------
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12 | Foliage::Foliage(const Geometry::SubMesh *leavesSubMesh, const Geometry::TreeSimplificationSequence * simpSeq, Geometry::CREATEVERTEXDATAFUNC vdfun, Geometry::CREATEINDEXDATAFUNC idfun):
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13 | Acth(NULL),
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14 | create_vertex_data_func(vdfun==NULL?Geometry::DefaultVertexDataCreator:vdfun),
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15 | create_index_data_func(idfun==NULL?Geometry::DefaultIndexDataCreator:idfun),
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16 | vertexdata(NULL), Leaves(NULL), MinDet(NULL)
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17 | {
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18 | begin = final = -1;
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19 |
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20 | ReadVertices(leavesSubMesh);
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21 | ReadLeafs(leavesSubMesh);
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22 | if (!ReadSimpSeq(simpSeq)) exit(1);
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23 | FillRoot();
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24 | CalculateTexCoordsAndNorms();
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25 |
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26 | indexdata->SetNumValidIndices(0);
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27 |
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28 | int h=0;
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29 |
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30 | Acth = new ActiveLeafNode[leafCount*8];
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31 |
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32 | for (h=0; h < leafCount; h++) {
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33 |
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34 | Acth[h].index = h;
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35 | if ( h != 0)
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36 | {
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37 | Acth[h].prev = (h-1);
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38 | Acth[h-1].next = h;
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39 | }
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40 |
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41 | }
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42 |
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43 | begin = 0;
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44 | final = leafCount-1;
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45 | active_leaf_count = leafCount;
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46 | }
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47 |
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48 | //--------------------------------------------------------------------------------------------------------------------------------
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49 | // Destructor. We must deallocate the memory allocated for pointers to vertices and edges
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50 | //--------------------------------------------------------------------------------------------------------------------------------
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51 | Foliage::~Foliage (void)
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52 | {
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53 | if (vertexdata) delete vertexdata;
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54 | if (indexdata) delete indexdata;
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55 | delete[] Leaves;
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56 | delete MinDet;
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57 | delete Acth;
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58 | }
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59 |
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60 | /****************************************** CRITERIO **************************************************/
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61 |
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62 |
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63 |
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64 | //---------------------------------------------------------------------------------------------------------
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65 | // es activo?
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66 | //---------------------------------------------------------------------------------------------------------
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67 |
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68 | bool Foliage::IsActive (int num) const
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69 | {
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70 | return ( (Acth[num].prev != -1) || (Acth[num].next != -1));
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71 | }
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72 |
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73 |
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74 |
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75 | void Foliage::CalculateLOD(int nleaves)
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76 | {
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77 | if ((nleaves <= leafCount) && (nleaves > minLeaves))
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78 | {
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79 | if ( nleaves < active_leaf_count) {
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80 | RCecol (active_leaf_count - nleaves);
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81 | }
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82 | else {
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83 | RCsplit (nleaves-active_leaf_count);
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84 | }
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85 |
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86 | active_leaf_count = nleaves;
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87 | }
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88 |
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89 | }
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90 |
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91 |
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92 | void Foliage::RCecol ( int num)
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93 | {
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94 |
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95 | int j, h;
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96 |
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97 | j = num;
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98 | h = final+1;
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99 | while ((h<=leafTotal) && (j>0))
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100 | {
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101 | while (( begin == Leaves[h].childLeft) || ( begin == Leaves[h].childRight))
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102 | begin = Acth[begin].next;
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103 |
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104 | while (( final == Leaves[h].childLeft) || ( final == Leaves[h].childRight))
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105 | final = Acth[final].prev;
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106 |
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107 | if (Acth[Leaves[h].childLeft].next != -1)
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108 | Acth[Acth[Leaves[h].childLeft].next].prev = Acth[Leaves[h].childLeft].prev;
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109 | if (Acth[Leaves[h].childLeft].prev != -1)
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110 | Acth[Acth[Leaves[h].childLeft].prev].next = Acth[Leaves[h].childLeft].next;
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111 |
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112 | if (Acth[Leaves[h].childRight].next != -1)
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113 | Acth[Acth[Leaves[h].childRight].next].prev = Acth[Leaves[h].childRight].prev;
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114 | if (Acth[Leaves[h].childRight].prev != -1)
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115 | Acth[Acth[Leaves[h].childRight].prev].next = Acth[Leaves[h].childRight].next;
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116 |
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117 |
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118 | // desconecto a los hijos
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119 | Acth[Leaves[h].childLeft].prev = -1;
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120 | Acth[Leaves[h].childLeft].next = -1;
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121 | Acth[Leaves[h].childRight].prev = -1;
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122 | Acth[Leaves[h].childRight].next = -1;
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123 |
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124 | //añado al final
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125 | Acth[h].prev = final;
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126 | Acth[h].next = -1;
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127 | Acth[final].next = h;
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128 | final = h;
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129 |
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130 |
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131 | // decremento el contador de colapsos
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132 | j--;
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133 | //incremento el posible siguiente colapso
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134 | h++;
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135 | }
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136 | }
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137 |
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138 | int Foliage::PrevActive(int h)
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139 | {
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140 | int i;
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141 |
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142 |
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143 | if (begin > h) i = -1;
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144 | else
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145 | {
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146 | i = h--;
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147 |
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148 | while (IsActive(i) == false)
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149 | i--;
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150 | }
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151 |
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152 | return (i);
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153 | }
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154 |
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155 | int Foliage::NextActive(int h)
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156 | { int i;
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157 |
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158 | i = h++;
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159 |
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160 | while ((IsActive(i) == false) || (i> leafTotal))
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161 | i++;
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162 |
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163 | if (i > leafTotal) i=-1;
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164 |
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165 |
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166 | return (i);
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167 | }
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168 |
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169 | void Foliage::RCsplit ( int num)
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170 | {
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171 |
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172 | int j, h, ant, post;
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173 |
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174 | j = num;
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175 | h = final;
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176 | while (h>leafCount && j>0)
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177 | {
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178 | ///////////// insertar a los hijos en orden segun su indice
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179 | //hijo izquierdo
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180 | ant = PrevActive(Leaves[h].childLeft);
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181 | post = NextActive(Leaves[h].childLeft);
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182 |
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183 |
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184 | Acth[Leaves[h].childLeft].next = post;
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185 | Acth[Leaves[h].childLeft].prev = ant;
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186 | if (ant != -1) Acth[ant].next = Leaves[h].childLeft;
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187 | else begin = Leaves[h].childLeft;
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188 | if (post != -1) Acth[post].prev = Leaves[h].childLeft;
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189 |
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190 |
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191 | //hijo derecho
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192 | ant = PrevActive(Leaves[h].childRight);
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193 | post = NextActive(Leaves[h].childRight);
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194 |
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195 |
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196 | Acth[Leaves[h].childRight].next = post;
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197 | Acth[Leaves[h].childRight].prev = ant;
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198 | if (ant != -1) Acth[ant].next = Leaves[h].childRight;
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199 | else begin = Leaves[h].childRight;
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200 | if (post != -1) Acth[post].prev = Leaves[h].childRight;
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201 |
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202 |
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203 | // despues de insertar los hijos miro a ver cual spliteare el siguiente
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204 | final = Acth[h].prev;
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205 |
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206 | //y desconecto al padre
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207 | if ( Acth[h].prev != -1)
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208 | Acth[Acth[h].prev].next = Acth[h].next;
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209 | //if ( Acth[h].next != -1)
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210 | // Acth[Acth[h].next].prev = Acth[h].prev;
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211 | Acth[h].prev = -1;
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212 | Acth[h].next = -1;
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213 |
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214 | // decremento el contador de colapsos
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215 | j--;
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216 | //incremento el posible siguiente colapso
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217 | h--;
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218 |
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219 |
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220 | }
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221 |
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222 |
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223 | }
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224 |
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225 | void Foliage::ReadVertices(const Geometry::SubMesh *submesh)
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226 | {
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227 | int countv= int(submesh->mVertexBuffer->mVertexCount);
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228 | vertexdata = create_vertex_data_func(2*countv);
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229 | Leaves = new Leaf[countv*2];
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230 | indexdata = create_index_data_func(countv*2*3); // 3 indices x 2 triangulos x hoja
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231 |
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232 | vertexdata->Begin();
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233 | for (int i=0; i<countv; i++)
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234 | {
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235 | vertexdata->SetVertexCoord( i, submesh->mVertexBuffer->mPosition[i].x,
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236 | submesh->mVertexBuffer->mPosition[i].y,
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237 | submesh->mVertexBuffer->mPosition[i].z );
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238 | }
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239 | vertexdata->End();
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240 |
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241 | TotalVerts = countv;
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242 | }
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243 |
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244 |
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245 | void Foliage::GetNormalH (Leaf &aleaf)
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246 | {
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247 |
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248 | float onex, oney, onez;
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249 | float twox, twoy, twoz;
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250 | float threex, threey, threez;
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251 |
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252 | /* Vertices[aHoja.vertsLeaf[0]].GetCoordinates (onex, oney, onez);
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253 | Vertices[aHoja.vertsLeaf[1]].GetCoordinates(twox, twoy, twoz);
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254 | Vertices[aHoja.vertsLeaf[2]].GetCoordinates (threex, threey, threez);*/
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255 |
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256 | vertexdata->GetVertexCoord(aleaf.vertsLeaf[0],onex,oney,onez);
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257 | vertexdata->GetVertexCoord(aleaf.vertsLeaf[1],twox,twoy,twoz);
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258 | vertexdata->GetVertexCoord(aleaf.vertsLeaf[2],threex,threey,threez);
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259 |
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260 | float v1[3]={twox-onex,twoy-oney,twoz-onez};
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261 | float v2[3]={threex-onex,threey-oney,threez-onez};
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262 |
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263 | Normalize(v1,v1);
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264 | Normalize(v2,v2);
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265 |
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266 | // aleaf.Normal[0] = (twoz-onez)*(threey-oney) - (twoy-oney)*(threez-onez);
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267 | // aleaf.Normal[1] = (twox-onex)*(threez-onez) - (threex-onex)*(twoz-onez);
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268 | // aleaf.Normal[2] = (threex-onex)*(twoy-oney) - (twox-onex)*(threey-oney);
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269 |
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270 | CrossProduct(v1,v2,aleaf.normal);
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271 |
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272 | }
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273 |
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274 | void Foliage::CrossProduct(const float *v1, const float *v2, float *res)
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275 | {
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276 | res[0] = v1[1]*v2[2] - v1[2]*v2[1];
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277 | res[1] = v1[2]*v2[0] - v1[0]*v2[2];
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278 | res[2] = v1[0]*v2[1] - v1[1]*v2[0];
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279 | }
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280 |
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281 | void Foliage::Normalize(const float *v, float *res)
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282 | {
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283 | float module=sqrtf(v[0]*v[0] + v[1]*v[1] + v[2]*v[2]);
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284 | res[0]=v[0]/module;
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285 | res[1]=v[1]/module;
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286 | res[2]=v[2]/module;
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287 | }
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288 |
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289 | void Foliage::ReadLeafs(const Geometry::SubMesh *submesh)
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290 | {
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291 | int numtris = int(submesh->mIndexCount / 3);
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292 | leafCount = numtris / 2;
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293 | for (int h=0; h<leafCount; h++)
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294 | {
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295 | Leaves[h].vertsLeaf[0] = submesh->mIndex[h*6+0];
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296 | Leaves[h].vertsLeaf[1] = submesh->mIndex[h*6+1];
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297 | Leaves[h].vertsLeaf[2] = submesh->mIndex[h*6+2];
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298 | Leaves[h].vertsLeaf[3] = submesh->mIndex[h*6+5];
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299 | Leaves[h].visible = 0;
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300 |
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301 | GetNormalH ( Leaves[h]);
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302 | }
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303 | }
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304 |
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305 | /// returns the number of total leafs
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306 | bool Foliage::ReadSimpSeq(const Geometry::TreeSimplificationSequence * simpSeq)
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307 | {
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308 | int tn, tv1,tv2, e=0;
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309 |
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310 | tn = leafCount;
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311 | for (std::vector<Geometry::TreeSimplificationSequence::Step>::const_iterator it = simpSeq->mSteps.begin(); it != simpSeq->mSteps.end(); it++)
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312 | {
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313 | Leaves[tn].vertsLeaf[0] = it->mNewQuad[0];
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314 | Leaves[tn].vertsLeaf[1] = it->mNewQuad[1];
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315 | Leaves[tn].vertsLeaf[2] = it->mNewQuad[2];
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316 | Leaves[tn].vertsLeaf[3] = it->mNewQuad[3];
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317 |
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318 | Leaves[tn].visible = 0;
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319 |
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320 | GetNormalH (Leaves[tn]);
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321 |
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322 | tv1 = it->mV0/2;
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323 | tv2 = it->mT0/2;
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324 |
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325 | Leaves[tn].childLeft= tv1;
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326 | Leaves[tn].childRight= tv2;
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327 |
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328 | Leaves[tv1].parent = tn;
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329 | Leaves[tv2].parent = tn;
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330 |
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331 | tn++;
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332 | }
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333 |
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334 | /* FILE* fp_simpli;
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335 | char linea[256];
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336 | int v0, v1, v2, v3, tn, tv1,tv2, e=0;
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337 |
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338 | if ((fp_simpli = fopen (simpSeqFile, "r")) == NULL)
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339 | {
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340 | printf ("No he podido abrir el fichero %s\n", simpSeqFile);
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341 | return false;
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342 | }
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343 | else
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344 | {
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345 | tn = leafCount;
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346 | while (fgets (linea, 255, fp_simpli) != NULL)
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347 | {
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348 | if (linea[0]<'0' || linea[0]>'9')
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349 | continue;
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350 |
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351 | long int triviej00=-1, triviej01=-1;
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352 | long int triviej10=-1, triviej11=-1;
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353 | sscanf(linea, "%lu %lu %lu %lu & %lu %lu %lu %lu", &triviej00,&triviej01,&triviej10,&triviej11, &v0,&v1,&v2,&v3);
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354 |
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355 | Leaves[tn].vertsLeaf[0] = v0;
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356 | Leaves[tn].vertsLeaf[1] = v1;
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357 | Leaves[tn].vertsLeaf[2] = v2;
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358 | Leaves[tn].vertsLeaf[3] = v3;
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359 |
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360 | Leaves[tn].visible = 0;
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361 |
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362 | GetNormalH (Leaves[tn]);
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363 |
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364 | tv1 = triviej00/2;
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365 | tv2 = triviej10/2;
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366 |
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367 | Leaves[tn].childLeft= tv1;
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368 | Leaves[tn].childRight= tv2;
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369 |
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370 | Leaves[tv1].parent = tn;
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371 | Leaves[tv2].parent = tn;
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372 |
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373 | tn++;
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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 | fclose(fp_simpli);*/
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379 |
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380 | leafTotal=tn;
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381 |
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382 | return true;
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383 | }
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384 |
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385 | void Foliage::FillRoot(void)
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386 | {
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387 | int i,j, k, t, cont;
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388 | bool esta, fin;
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389 |
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390 | i=0;
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391 | k=-1;
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392 | cont =-1;
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393 |
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394 | MinDet = new ActiveLeafNode[leafCount*2];
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395 |
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396 | while (i<leafTotal)
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397 | {
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398 | j=i;
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399 | while (Leaves[j].parent>-1) j=Leaves[j].parent;
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400 | Leaves[i].root = j;
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401 |
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402 |
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403 | // para la estructura MinDet
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404 | if ( k == -1){
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405 | k++;
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406 | MinDet[k].index = j;
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407 | cont =k;
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408 | }
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409 | else
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410 | {
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411 | t = 0;
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412 | esta = false;
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413 | fin = false;
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414 |
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415 | while (( fin == false) && (esta == false))
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416 | { if ( MinDet[t].index == j) esta = true;
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417 | else t++;
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418 | if (MinDet[t].index == -1) fin = true;
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419 | }
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420 |
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421 | if ( esta == false)
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422 | {
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423 | cont++;
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424 | MinDet[cont].index = j;
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425 | }
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426 | }
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427 |
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428 | i++;
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429 | }
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430 |
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431 | minLeaves = cont;
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432 |
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433 | }
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434 |
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435 | void Foliage::CalculateTexCoordsAndNorms(void)
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436 | {
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437 | vertexdata->Begin();
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438 | for (int i=0; i<leafCount; i++)
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439 | {
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440 | const float* lanormal = Leaves[i].normal;
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441 | vertexdata->SetVertexNormal(Leaves[i].vertsLeaf[0], lanormal[0], lanormal[1], lanormal[2]);
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442 | vertexdata->SetVertexTexCoord(Leaves[i].vertsLeaf[0], 0.0f, 1.0f);
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443 |
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444 | vertexdata->SetVertexNormal(Leaves[i].vertsLeaf[1], lanormal[0], lanormal[1], lanormal[2]);
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445 | vertexdata->SetVertexTexCoord(Leaves[i].vertsLeaf[1], 0.0f, 0.0f);
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446 |
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447 | vertexdata->SetVertexNormal(Leaves[i].vertsLeaf[2], lanormal[0], lanormal[1], lanormal[2]);
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448 | vertexdata->SetVertexTexCoord(Leaves[i].vertsLeaf[2], 1.0f, 1.0f);
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449 |
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450 | vertexdata->SetVertexNormal(Leaves[i].vertsLeaf[3], lanormal[0], lanormal[1], lanormal[2]);
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451 | vertexdata->SetVertexTexCoord(Leaves[i].vertsLeaf[3], 1.0f, 0.0f);
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452 | }
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453 | vertexdata->End();
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454 | }
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455 |
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456 | Foliage::Foliage(const Foliage *ar)
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457 | {
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458 | leafCount = ar->leafCount;
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459 | MinDet = new ActiveLeafNode[leafCount*2];
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460 | // for (unsigned int i=0; i<nHojas*2; i++)
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461 | // MinDet[i]=ar->MinDet[i];
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462 | memcpy(MinDet,ar->MinDet,sizeof(ActiveLeafNode)*leafCount*2);
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463 | leafTotal=ar->leafTotal;
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464 | minLeaves=ar->minLeaves;
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465 | TotalVerts=ar->TotalVerts;
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466 |
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467 | create_vertex_data_func=ar->create_vertex_data_func;
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468 | create_index_data_func=ar->create_index_data_func;
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469 | vertexdata=create_vertex_data_func(ar->vertexdata->GetNumVertices());
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470 | vertexdata->Begin();
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471 | for (unsigned int i=0; i<vertexdata->GetNumVertices(); i++)
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472 | {
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473 | float va,vb,vc;
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474 | ar->vertexdata->GetVertexCoord(i,va,vb,vc);
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475 | vertexdata->SetVertexCoord(i,va,vb,vc);
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476 | ar->vertexdata->GetVertexNormal(i,va,vb,vc);
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477 | vertexdata->SetVertexNormal(i,va,vb,vc);
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478 | }
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479 | vertexdata->End();
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480 | indexdata=create_index_data_func(ar->indexdata->GetNumMaxIndices());
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481 | indexdata->Begin();
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482 | for (unsigned int i=0; i<indexdata->GetNumMaxIndices(); i++)
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483 | indexdata->SetIndex(i,ar->indexdata->GetIndex(i));
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484 | indexdata->End();
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485 |
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486 | Leaves=new Leaf[vertexdata->GetNumVertices()];
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487 | // for (unsigned int i=0; i<vertexdata->GetNumVertices(); i++)
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488 | // Leaves[i]=ar->Leaves[i];
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489 | memcpy(Leaves,ar->Leaves,sizeof(Leaf)*vertexdata->GetNumVertices());
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490 |
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491 | // esto no sé si devería haber akí
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492 | indexdata->SetNumValidIndices(0);
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493 |
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494 | int h=0;
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495 |
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496 | Acth = new ActiveLeafNode[leafCount*8];
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497 |
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498 | for ( h=0; h < leafCount; h++) {
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499 |
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500 | Acth[h].index = h;
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501 | if ( h != 0)
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502 | {
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503 | Acth[h].prev = (h-1);
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504 | Acth[h-1].next = h;
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505 | }
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506 |
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507 | }
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508 |
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509 | begin = 0;
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510 | final = leafCount-1;
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511 | active_leaf_count = leafCount;
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512 |
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513 | } |
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