1 | /* |
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2 | |
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3 | Brian Curless |
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4 | |
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5 | Computer Graphics Laboratory |
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6 | Stanford University |
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7 | |
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8 | --------------------------------------------------------------------- |
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9 | |
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10 | Copyright (1997) The Board of Trustees of the Leland Stanford Junior |
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11 | University. Except for commercial resale, lease, license or other |
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12 | commercial transactions, permission is hereby given to use, copy, |
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13 | modify this software for academic purposes only. No part of this |
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14 | software or any derivatives thereof may be used in the production of |
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15 | computer models for resale or for use in a commercial |
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16 | product. STANFORD MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND |
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17 | CONCERNING THIS SOFTWARE. No support is implied or provided. |
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18 | |
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19 | */ |
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20 | |
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21 | |
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22 | #include "vripGlobals.h" |
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23 | #include "configure.h" |
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24 | #include "linePersp.h" |
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25 | #include "perspective.h" |
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26 | |
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27 | OrthoShear * |
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28 | computeShear(vec3f dir) |
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29 | { |
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30 | vec3f newDir; |
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31 | |
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32 | OrthoShear *shear = new OrthoShear; |
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33 | |
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34 | if (fabs(dir[0]) > fabs(dir[1])) { |
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35 | if (fabs(dir[0]) > fabs(dir[2])) |
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36 | shear->axis = X_AXIS; |
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37 | else |
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38 | shear->axis = Z_AXIS; |
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39 | } |
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40 | else if (fabs(dir[1]) > fabs(dir[2])) |
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41 | shear->axis = Y_AXIS; |
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42 | else |
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43 | shear->axis = Z_AXIS; |
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44 | |
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45 | |
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46 | // Assumes a transpose operation |
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47 | |
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48 | switch (shear->axis) { |
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49 | |
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50 | case X_AXIS: |
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51 | newDir[0] = dir[2]; |
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52 | newDir[1] = dir[1]; |
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53 | newDir[2] = dir[0]; |
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54 | break; |
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55 | |
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56 | case Y_AXIS: |
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57 | newDir[0] = dir[0]; |
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58 | newDir[1] = dir[2]; |
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59 | newDir[2] = dir[1]; |
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60 | break; |
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61 | |
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62 | case Z_AXIS: |
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63 | newDir[0] = dir[0]; |
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64 | newDir[1] = dir[1]; |
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65 | newDir[2] = dir[2]; |
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66 | break; |
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67 | } |
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68 | |
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69 | shear->flip = newDir[2] > 0; |
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70 | |
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71 | shear->sx = newDir[0]/fabs(newDir[2]); |
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72 | shear->sy = newDir[1]/fabs(newDir[2]); |
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73 | |
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74 | if (Verbose) |
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75 | printf("Shear: sx = %f sy = %f axis = %d flip = %d\n", |
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76 | shear->sx, shear->sy, shear->axis, shear->flip); |
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77 | |
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78 | return shear; |
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79 | } |
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80 | |
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81 | |
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82 | void |
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83 | configureGrid(OccGrid *grid, OrthoShear *shear) |
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84 | { |
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85 | // Unflip the grid, if necessary |
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86 | if (grid->flip) { |
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87 | grid->flip = FALSE; |
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88 | grid->origin[2] = -grid->origin[2]; |
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89 | } |
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90 | |
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91 | // Transpose to the desired axis |
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92 | if (shear->axis != grid->axis) { |
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93 | if (grid->axis == X_AXIS) |
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94 | grid->transposeXZ(); |
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95 | else if (grid->axis == Y_AXIS) |
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96 | grid->transposeYZ(); |
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97 | |
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98 | if (shear->axis == X_AXIS) |
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99 | grid->transposeXZ(); |
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100 | else if (shear->axis == Y_AXIS) |
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101 | grid->transposeYZ(); |
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102 | |
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103 | grid->axis = shear->axis; |
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104 | } |
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105 | |
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106 | // Flip the grid, if necessary |
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107 | grid->flip = shear->flip; |
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108 | grid->origin[2] = grid->flip ? -grid->origin[2] : grid->origin[2]; |
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109 | |
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110 | float zinc = grid->flip ? -grid->resolution : grid->resolution; |
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111 | float z = grid->origin[2]; |
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112 | for (int i = 0; i < grid->zdim; i++, z+= zinc) { |
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113 | grid->sliceOrigins[i][0] = grid->origin[0] + shear->sx * z; |
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114 | grid->sliceOrigins[i][1] = grid->origin[1] + shear->sy * z; |
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115 | grid->sliceOrigins[i][2] = z; |
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116 | } |
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117 | } |
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118 | |
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119 | |
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120 | void |
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121 | configureGrid(OccGridRLE **pInGrid, OccGridRLE **pOutGrid, OrthoShear *shear) |
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122 | { |
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123 | OccGridRLE *temp, *inGrid, *outGrid; |
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124 | |
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125 | inGrid = *pInGrid; |
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126 | outGrid = *pOutGrid; |
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127 | |
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128 | // Unflip the grid, if necessary |
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129 | if (inGrid->flip) { |
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130 | inGrid->flip = FALSE; |
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131 | inGrid->origin[2] = -inGrid->origin[2]; |
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132 | } |
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133 | |
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134 | outGrid->copyParams(inGrid); |
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135 | |
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136 | // Transpose to the desired axis |
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137 | if (shear->axis != inGrid->axis) { |
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138 | if (inGrid->axis == X_AXIS) { |
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139 | inGrid->transposeXZ(outGrid); |
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140 | SWAP(inGrid, outGrid, temp); |
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141 | } |
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142 | else if (inGrid->axis == Y_AXIS) { |
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143 | inGrid->transposeYZ(outGrid); |
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144 | SWAP(inGrid, outGrid, temp); |
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145 | } |
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146 | |
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147 | if (shear->axis == X_AXIS) { |
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148 | inGrid->transposeXZ(outGrid); |
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149 | } |
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150 | else if (shear->axis == Y_AXIS) { |
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151 | inGrid->transposeYZ(outGrid); |
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152 | } |
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153 | else { |
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154 | SWAP(inGrid, outGrid, temp); |
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155 | } |
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156 | |
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157 | outGrid->axis = shear->axis; |
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158 | } |
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159 | else { |
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160 | SWAP(inGrid, outGrid, temp); |
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161 | } |
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162 | |
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163 | // Flip the grid, if necessary |
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164 | outGrid->flip = shear->flip; |
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165 | outGrid->origin[2] = outGrid->flip ? -outGrid->origin[2] : outGrid->origin[2]; |
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166 | |
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167 | float zinc = outGrid->flip ? -outGrid->resolution : outGrid->resolution; |
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168 | |
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169 | float z = outGrid->origin[2]; |
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170 | |
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171 | for (int i = 0; i < outGrid->zdim; i++, z+= zinc) { |
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172 | outGrid->sliceOrigins[i][0] = outGrid->origin[0] + shear->sx * z; |
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173 | outGrid->sliceOrigins[i][1] = outGrid->origin[1] + shear->sy * z; |
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174 | outGrid->sliceOrigins[i][2] = z; |
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175 | |
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176 | inGrid->sliceOrigins[i][0] = inGrid->origin[0] + shear->sx * z; |
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177 | inGrid->sliceOrigins[i][1] = inGrid->origin[1] + shear->sy * z; |
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178 | inGrid->sliceOrigins[i][2] = z; |
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179 | } |
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180 | |
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181 | inGrid->copyParams(outGrid); |
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182 | |
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183 | *pInGrid = inGrid; |
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184 | *pOutGrid = outGrid; |
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185 | } |
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186 | |
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187 | |
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188 | void |
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189 | configureGrid(OccGridNormRLE **pInGrid, OccGridNormRLE **pOutGrid, |
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190 | OrthoShear *shear) |
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191 | { |
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192 | OccGridNormRLE *temp, *inGrid, *outGrid; |
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193 | |
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194 | inGrid = *pInGrid; |
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195 | outGrid = *pOutGrid; |
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196 | |
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197 | outGrid->copyParams(inGrid); |
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198 | |
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199 | // Transpose to the desired axis |
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200 | if (shear->axis != inGrid->axis) { |
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201 | if (inGrid->axis == X_AXIS) { |
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202 | inGrid->transposeXZ(outGrid); |
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203 | SWAP(inGrid, outGrid, temp); |
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204 | } |
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205 | else if (inGrid->axis == Y_AXIS) { |
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206 | inGrid->transposeYZ(outGrid); |
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207 | SWAP(inGrid, outGrid, temp); |
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208 | } |
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209 | |
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210 | if (shear->axis == X_AXIS) { |
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211 | inGrid->transposeXZ(outGrid); |
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212 | } |
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213 | else if (shear->axis == Y_AXIS) { |
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214 | inGrid->transposeYZ(outGrid); |
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215 | } |
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216 | else { |
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217 | SWAP(inGrid, outGrid, temp); |
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218 | } |
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219 | |
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220 | outGrid->axis = shear->axis; |
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221 | } |
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222 | else { |
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223 | SWAP(inGrid, outGrid, temp); |
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224 | } |
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225 | |
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226 | // Flip the grid, if necessary |
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227 | outGrid->flip = shear->flip; |
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228 | outGrid->origin[2] = outGrid->flip ? -outGrid->origin[2] : outGrid->origin[2]; |
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229 | |
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230 | float zinc = outGrid->flip ? -outGrid->resolution : outGrid->resolution; |
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231 | |
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232 | float z = outGrid->origin[2]; |
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233 | |
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234 | for (int i = 0; i < outGrid->zdim; i++, z+= zinc) { |
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235 | outGrid->sliceOrigins[i][0] = outGrid->origin[0] + shear->sx * z; |
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236 | outGrid->sliceOrigins[i][1] = outGrid->origin[1] + shear->sy * z; |
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237 | outGrid->sliceOrigins[i][2] = z; |
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238 | } |
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239 | |
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240 | inGrid->copyParams(outGrid); |
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241 | |
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242 | *pInGrid = inGrid; |
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243 | *pOutGrid = outGrid; |
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244 | } |
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245 | |
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246 | |
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247 | void |
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248 | configureGridLinePersp(OccGridRLE **pInGrid, OccGridRLE **pOutGrid, |
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249 | OrthoShear *shear) |
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250 | { |
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251 | OccGridRLE *temp, *inGrid, *outGrid; |
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252 | |
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253 | inGrid = *pInGrid; |
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254 | outGrid = *pOutGrid; |
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255 | |
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256 | // Unflip the grid, if necessary |
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257 | if (inGrid->flip) { |
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258 | inGrid->flip = FALSE; |
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259 | inGrid->origin[2] = -inGrid->origin[2]; |
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260 | } |
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261 | |
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262 | outGrid->copyParams(inGrid); |
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263 | |
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264 | // Transpose to the desired axis |
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265 | if (shear->axis != inGrid->axis) { |
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266 | if (inGrid->axis == X_AXIS) { |
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267 | inGrid->transposeXZ(outGrid); |
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268 | SWAP(inGrid, outGrid, temp); |
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269 | } |
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270 | else if (inGrid->axis == Y_AXIS) { |
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271 | inGrid->transposeYZ(outGrid); |
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272 | SWAP(inGrid, outGrid, temp); |
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273 | } |
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274 | |
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275 | if (shear->axis == X_AXIS) { |
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276 | inGrid->transposeXZ(outGrid); |
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277 | } |
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278 | else if (shear->axis == Y_AXIS) { |
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279 | inGrid->transposeYZ(outGrid); |
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280 | } |
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281 | else { |
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282 | SWAP(inGrid, outGrid, temp); |
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283 | } |
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284 | |
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285 | outGrid->axis = shear->axis; |
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286 | } |
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287 | else { |
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288 | SWAP(inGrid, outGrid, temp); |
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289 | } |
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290 | |
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291 | // Flip the grid, if necessary |
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292 | outGrid->flip = shear->flip; |
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293 | outGrid->origin[2] = outGrid->flip ? |
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294 | -outGrid->origin[2] : outGrid->origin[2]; |
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295 | |
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296 | float zinc = outGrid->flip ? -outGrid->resolution : outGrid->resolution; |
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297 | float z = outGrid->origin[2]; |
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298 | for (int i = 0; i < outGrid->zdim; i++, z+= zinc) { |
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299 | outGrid->sliceOrigins[i][0] = outGrid->origin[0]; |
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300 | outGrid->sliceOrigins[i][1] = outGrid->origin[1]; |
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301 | outGrid->sliceOrigins[i][2] = z; |
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302 | } |
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303 | |
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304 | inGrid->copyParams(outGrid); |
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305 | |
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306 | *pInGrid = inGrid; |
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307 | *pOutGrid = outGrid; |
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308 | } |
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309 | |
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310 | |
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311 | void |
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312 | configureGridPersp(OccGridRLE **pInGrid, OccGridRLE **pOutGrid, |
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313 | OrthoShear *shear) |
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314 | { |
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315 | OccGridRLE *temp, *inGrid, *outGrid; |
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316 | |
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317 | inGrid = *pInGrid; |
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318 | outGrid = *pOutGrid; |
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319 | |
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320 | // Unflip the grid, if necessary |
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321 | if (inGrid->flip) { |
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322 | inGrid->flip = FALSE; |
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323 | inGrid->origin[2] = -inGrid->origin[2]; |
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324 | } |
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325 | |
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326 | outGrid->copyParams(inGrid); |
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327 | |
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328 | // Transpose to the desired axis |
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329 | if (shear->axis != inGrid->axis) { |
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330 | if (inGrid->axis == X_AXIS) { |
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331 | inGrid->transposeXZ(outGrid); |
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332 | SWAP(inGrid, outGrid, temp); |
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333 | } |
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334 | else if (inGrid->axis == Y_AXIS) { |
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335 | inGrid->transposeYZ(outGrid); |
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336 | SWAP(inGrid, outGrid, temp); |
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337 | } |
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338 | |
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339 | if (shear->axis == X_AXIS) { |
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340 | inGrid->transposeXZ(outGrid); |
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341 | } |
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342 | else if (shear->axis == Y_AXIS) { |
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343 | inGrid->transposeYZ(outGrid); |
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344 | } |
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345 | else { |
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346 | SWAP(inGrid, outGrid, temp); |
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347 | } |
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348 | |
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349 | outGrid->axis = shear->axis; |
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350 | } |
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351 | else { |
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352 | SWAP(inGrid, outGrid, temp); |
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353 | } |
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354 | |
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355 | // Flip the grid, if necessary |
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356 | outGrid->flip = shear->flip; |
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357 | outGrid->origin[2] = outGrid->flip ? |
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358 | -outGrid->origin[2] : outGrid->origin[2]; |
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359 | |
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360 | float zinc = outGrid->flip ? -outGrid->resolution : outGrid->resolution; |
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361 | float z = outGrid->origin[2]; |
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362 | for (int i = 0; i < outGrid->zdim; i++, z+= zinc) { |
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363 | outGrid->sliceOrigins[i][0] = outGrid->origin[0]; |
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364 | outGrid->sliceOrigins[i][1] = outGrid->origin[1]; |
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365 | outGrid->sliceOrigins[i][2] = z; |
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366 | } |
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367 | |
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368 | inGrid->copyParams(outGrid); |
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369 | |
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370 | *pInGrid = inGrid; |
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371 | *pOutGrid = outGrid; |
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372 | } |
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373 | |
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374 | |
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375 | BBox3f * |
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376 | getBBox(OccGrid *grid) |
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377 | { |
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378 | float d1, d2, d3, d4, res; |
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379 | |
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380 | BBox3f *bbox = new BBox3f; |
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381 | |
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382 | res = grid->resolution; |
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383 | |
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384 | d1 = grid->sliceOrigins[0][0]; |
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385 | d2 = grid->sliceOrigins[0][0] + grid->xdim*res; |
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386 | d3 = grid->sliceOrigins[grid->zdim-1][0]; |
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387 | d4 = grid->sliceOrigins[grid->zdim-1][0] + grid->xdim*res; |
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388 | bbox->fll.x = MIN(MIN(d1,d2),MIN(d3,d4)); |
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389 | bbox->nur.x = MAX(MAX(d1,d2),MAX(d3,d4)); |
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390 | |
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391 | d1 = grid->sliceOrigins[0][1]; |
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392 | d2 = grid->sliceOrigins[0][1] + grid->ydim*res; |
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393 | d3 = grid->sliceOrigins[grid->zdim-1][1]; |
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394 | d4 = grid->sliceOrigins[grid->zdim-1][1] + grid->ydim*res; |
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395 | bbox->fll.y = MIN(MIN(d1,d2),MIN(d3,d4)); |
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396 | bbox->nur.y = MAX(MAX(d1,d2),MAX(d3,d4)); |
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397 | |
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398 | d1 = grid->sliceOrigins[0][2]; |
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399 | d2 = grid->sliceOrigins[grid->zdim-1][2]; |
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400 | bbox->fll.z = MIN(d1,d2); |
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401 | bbox->nur.z = MAX(d1,d2); |
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402 | |
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403 | return bbox; |
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404 | } |
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405 | |
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406 | |
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407 | BBox3f * |
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408 | getBBox(OccGridRLE *grid) |
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409 | { |
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410 | float d1, d2, d3, d4, res; |
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411 | |
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412 | BBox3f *bbox = new BBox3f; |
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413 | |
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414 | res = grid->resolution; |
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415 | |
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416 | d1 = grid->sliceOrigins[0][0]; |
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417 | d2 = grid->sliceOrigins[0][0] + grid->xdim*res; |
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418 | d3 = grid->sliceOrigins[grid->zdim-1][0]; |
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419 | d4 = grid->sliceOrigins[grid->zdim-1][0] + grid->xdim*res; |
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420 | bbox->fll.x = MIN(MIN(d1,d2),MIN(d3,d4)); |
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421 | bbox->nur.x = MAX(MAX(d1,d2),MAX(d3,d4)); |
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422 | |
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423 | d1 = grid->sliceOrigins[0][1]; |
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424 | d2 = grid->sliceOrigins[0][1] + grid->ydim*res; |
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425 | d3 = grid->sliceOrigins[grid->zdim-1][1]; |
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426 | d4 = grid->sliceOrigins[grid->zdim-1][1] + grid->ydim*res; |
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427 | bbox->fll.y = MIN(MIN(d1,d2),MIN(d3,d4)); |
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428 | bbox->nur.y = MAX(MAX(d1,d2),MAX(d3,d4)); |
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429 | |
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430 | d1 = grid->sliceOrigins[0][2]; |
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431 | d2 = grid->sliceOrigins[grid->zdim-1][2]; |
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432 | bbox->fll.z = MIN(d1,d2); |
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433 | bbox->nur.z = MAX(d1,d2); |
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434 | |
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435 | return bbox; |
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436 | } |
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437 | |
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438 | |
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439 | BBox3f * |
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440 | getBBox(OccGridNormRLE *grid) |
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441 | { |
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442 | float d1, d2, d3, d4, res; |
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443 | |
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444 | BBox3f *bbox = new BBox3f; |
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445 | |
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446 | res = grid->resolution; |
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447 | |
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448 | d1 = grid->sliceOrigins[0][0]; |
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449 | d2 = grid->sliceOrigins[0][0] + grid->xdim*res; |
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450 | d3 = grid->sliceOrigins[grid->zdim-1][0]; |
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451 | d4 = grid->sliceOrigins[grid->zdim-1][0] + grid->xdim*res; |
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452 | bbox->fll.x = MIN(MIN(d1,d2),MIN(d3,d4)); |
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453 | bbox->nur.x = MAX(MAX(d1,d2),MAX(d3,d4)); |
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454 | |
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455 | d1 = grid->sliceOrigins[0][1]; |
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456 | d2 = grid->sliceOrigins[0][1] + grid->xdim*res; |
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457 | d3 = grid->sliceOrigins[grid->zdim-1][1]; |
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458 | d4 = grid->sliceOrigins[grid->zdim-1][1] + grid->ydim*res; |
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459 | bbox->fll.y = MIN(MIN(d1,d2),MIN(d3,d4)); |
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460 | bbox->nur.y = MAX(MAX(d1,d2),MAX(d3,d4)); |
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461 | |
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462 | d1 = grid->sliceOrigins[0][2]; |
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463 | d2 = grid->sliceOrigins[grid->zdim-1][2]; |
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464 | bbox->fll.z = MIN(d1,d2); |
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465 | bbox->nur.z = MAX(d1,d2); |
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466 | |
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467 | return bbox; |
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468 | } |
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469 | |
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470 | |
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471 | BBox3f * |
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472 | getBBoxLinePersp(OccGridRLE *grid, int *numLines) |
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473 | { |
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474 | Vec3f v, v1, v2, v3, v4, v5, v6, v7, v8; |
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475 | float res, dely; |
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476 | |
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477 | BBox3f *bbox = new BBox3f; |
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478 | |
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479 | res = grid->resolution; |
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480 | |
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481 | v.setValue(grid->sliceOrigins[0][0], |
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482 | grid->sliceOrigins[0][1], |
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483 | grid->sliceOrigins[0][2]); |
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484 | applyLinePersp(v, v1); |
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485 | |
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486 | v.setValue(grid->sliceOrigins[0][0] + grid->xdim*res, |
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487 | grid->sliceOrigins[0][1], |
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488 | grid->sliceOrigins[0][2]); |
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489 | applyLinePersp(v, v2); |
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490 | |
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491 | dely = fabs(v1.y - v2.y); |
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492 | |
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493 | v.setValue(grid->sliceOrigins[0][0], |
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494 | grid->sliceOrigins[0][1] + grid->ydim*res, |
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495 | grid->sliceOrigins[0][2]); |
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496 | applyLinePersp(v, v3); |
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497 | |
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498 | v.setValue(grid->sliceOrigins[0][0] + grid->xdim*res, |
---|
499 | grid->sliceOrigins[0][1] + grid->ydim*res, |
---|
500 | grid->sliceOrigins[0][2]); |
---|
501 | applyLinePersp(v, v4); |
---|
502 | |
---|
503 | dely = MAX(dely, fabs(v3.y - v4.y)); |
---|
504 | |
---|
505 | v.setValue(grid->sliceOrigins[0][0], |
---|
506 | grid->sliceOrigins[0][1], |
---|
507 | grid->sliceOrigins[grid->zdim-1][2]); |
---|
508 | applyLinePersp(v, v5); |
---|
509 | |
---|
510 | v.setValue(grid->sliceOrigins[0][0] + grid->xdim*res, |
---|
511 | grid->sliceOrigins[0][1], |
---|
512 | grid->sliceOrigins[grid->zdim-1][2]); |
---|
513 | applyLinePersp(v, v6); |
---|
514 | |
---|
515 | dely = MAX(dely, fabs(v5.y - v6.y)); |
---|
516 | |
---|
517 | v.setValue(grid->sliceOrigins[0][0], |
---|
518 | grid->sliceOrigins[0][1] + grid->ydim*res, |
---|
519 | grid->sliceOrigins[grid->zdim-1][2]); |
---|
520 | applyLinePersp(v, v7); |
---|
521 | |
---|
522 | v.setValue(grid->sliceOrigins[0][0] + grid->xdim*res, |
---|
523 | grid->sliceOrigins[0][1] + grid->ydim*res, |
---|
524 | grid->sliceOrigins[grid->zdim-1][2]); |
---|
525 | applyLinePersp(v, v8); |
---|
526 | |
---|
527 | dely = MAX(dely, fabs(v7.y - v8.y)); |
---|
528 | |
---|
529 | |
---|
530 | bbox->fll.x = MIN(MIN(MIN(v1.x,v2.x),MIN(v3.x,v4.x)), |
---|
531 | MIN(MIN(v5.x,v6.x),MIN(v7.x,v8.x))); |
---|
532 | bbox->nur.x = MAX(MAX(MAX(v1.x,v2.x),MAX(v3.x,v4.x)), |
---|
533 | MAX(MAX(v5.x,v6.x),MAX(v7.x,v8.x))); |
---|
534 | |
---|
535 | bbox->fll.y = MIN(MIN(MIN(v1.y,v2.y),MIN(v3.y,v4.y)), |
---|
536 | MIN(MIN(v5.y,v6.y),MIN(v7.y,v8.y))); |
---|
537 | bbox->nur.y = MAX(MAX(MAX(v1.y,v2.y),MAX(v3.y,v4.y)), |
---|
538 | MAX(MAX(v5.y,v6.y),MAX(v7.y,v8.y))); |
---|
539 | |
---|
540 | bbox->fll.z = MIN(MIN(MIN(v1.z,v2.z),MIN(v3.z,v4.z)), |
---|
541 | MIN(MIN(v5.z,v6.z),MIN(v7.z,v8.z))); |
---|
542 | bbox->nur.z = MAX(MAX(MAX(v1.z,v2.z),MAX(v3.z,v4.z)), |
---|
543 | MAX(MAX(v5.z,v6.z),MAX(v7.z,v8.z))); |
---|
544 | |
---|
545 | |
---|
546 | |
---|
547 | *numLines = int(ceil(dely/res))+2; |
---|
548 | |
---|
549 | #if 0 |
---|
550 | // Shouldn't need to multiply by 2 |
---|
551 | *numLines = 2*int(ceil(dely/res))+2; |
---|
552 | if (Warn) |
---|
553 | printf("Using conservative line width in depth map.\n"); |
---|
554 | #endif |
---|
555 | |
---|
556 | if (Verbose) { |
---|
557 | printf("BBox: (%f, %f, %f) -> (%f, %f, %f)\n", |
---|
558 | bbox->fll.x, bbox->fll.y, bbox->fll.z, |
---|
559 | bbox->nur.x, bbox->nur.y, bbox->nur.z); |
---|
560 | } |
---|
561 | |
---|
562 | return bbox; |
---|
563 | } |
---|
564 | |
---|
565 | |
---|
566 | BBox3f * |
---|
567 | getBBoxPersp(OccGridRLE *grid, int *numLines) |
---|
568 | { |
---|
569 | Vec3f v, v1, v2, v3, v4, v5, v6, v7, v8; |
---|
570 | float res, dely; |
---|
571 | |
---|
572 | BBox3f *bbox = new BBox3f; |
---|
573 | |
---|
574 | res = grid->resolution; |
---|
575 | |
---|
576 | v.setValue(grid->sliceOrigins[0][0], |
---|
577 | grid->sliceOrigins[0][1], |
---|
578 | grid->sliceOrigins[0][2]); |
---|
579 | applyPersp(v, v1); |
---|
580 | |
---|
581 | v.setValue(grid->sliceOrigins[0][0] + grid->xdim*res, |
---|
582 | grid->sliceOrigins[0][1], |
---|
583 | grid->sliceOrigins[0][2]); |
---|
584 | applyPersp(v, v2); |
---|
585 | |
---|
586 | dely = fabs(v1.y - v2.y); |
---|
587 | |
---|
588 | v.setValue(grid->sliceOrigins[0][0], |
---|
589 | grid->sliceOrigins[0][1] + grid->ydim*res, |
---|
590 | grid->sliceOrigins[0][2]); |
---|
591 | applyPersp(v, v3); |
---|
592 | |
---|
593 | v.setValue(grid->sliceOrigins[0][0] + grid->xdim*res, |
---|
594 | grid->sliceOrigins[0][1] + grid->ydim*res, |
---|
595 | grid->sliceOrigins[0][2]); |
---|
596 | applyPersp(v, v4); |
---|
597 | |
---|
598 | dely = MAX(dely, fabs(v3.y - v4.y)); |
---|
599 | |
---|
600 | v.setValue(grid->sliceOrigins[0][0], |
---|
601 | grid->sliceOrigins[0][1], |
---|
602 | grid->sliceOrigins[grid->zdim-1][2]); |
---|
603 | applyPersp(v, v5); |
---|
604 | |
---|
605 | v.setValue(grid->sliceOrigins[0][0] + grid->xdim*res, |
---|
606 | grid->sliceOrigins[0][1], |
---|
607 | grid->sliceOrigins[grid->zdim-1][2]); |
---|
608 | applyPersp(v, v6); |
---|
609 | |
---|
610 | dely = MAX(dely, fabs(v5.y - v6.y)); |
---|
611 | |
---|
612 | v.setValue(grid->sliceOrigins[0][0], |
---|
613 | grid->sliceOrigins[0][1] + grid->ydim*res, |
---|
614 | grid->sliceOrigins[grid->zdim-1][2]); |
---|
615 | applyPersp(v, v7); |
---|
616 | |
---|
617 | v.setValue(grid->sliceOrigins[0][0] + grid->xdim*res, |
---|
618 | grid->sliceOrigins[0][1] + grid->ydim*res, |
---|
619 | grid->sliceOrigins[grid->zdim-1][2]); |
---|
620 | applyPersp(v, v8); |
---|
621 | |
---|
622 | dely = MAX(dely, fabs(v7.y - v8.y)); |
---|
623 | |
---|
624 | |
---|
625 | bbox->fll.x = MIN(MIN(MIN(v1.x,v2.x),MIN(v3.x,v4.x)), |
---|
626 | MIN(MIN(v5.x,v6.x),MIN(v7.x,v8.x))); |
---|
627 | bbox->nur.x = MAX(MAX(MAX(v1.x,v2.x),MAX(v3.x,v4.x)), |
---|
628 | MAX(MAX(v5.x,v6.x),MAX(v7.x,v8.x))); |
---|
629 | |
---|
630 | bbox->fll.y = MIN(MIN(MIN(v1.y,v2.y),MIN(v3.y,v4.y)), |
---|
631 | MIN(MIN(v5.y,v6.y),MIN(v7.y,v8.y))); |
---|
632 | bbox->nur.y = MAX(MAX(MAX(v1.y,v2.y),MAX(v3.y,v4.y)), |
---|
633 | MAX(MAX(v5.y,v6.y),MAX(v7.y,v8.y))); |
---|
634 | |
---|
635 | bbox->fll.z = MIN(MIN(MIN(v1.z,v2.z),MIN(v3.z,v4.z)), |
---|
636 | MIN(MIN(v5.z,v6.z),MIN(v7.z,v8.z))); |
---|
637 | bbox->nur.z = MAX(MAX(MAX(v1.z,v2.z),MAX(v3.z,v4.z)), |
---|
638 | MAX(MAX(v5.z,v6.z),MAX(v7.z,v8.z))); |
---|
639 | |
---|
640 | |
---|
641 | |
---|
642 | *numLines = int(ceil(dely/res))+2; |
---|
643 | |
---|
644 | #if 0 |
---|
645 | // Shouldn't need to multiply by 2 |
---|
646 | *numLines = 2*int(ceil(dely/res))+2; |
---|
647 | if (Warn) |
---|
648 | printf("Using conservative line width in depth map.\n"); |
---|
649 | #endif |
---|
650 | |
---|
651 | if (Verbose) { |
---|
652 | printf("BBox: (%f, %f, %f) -> (%f, %f, %f)\n", |
---|
653 | bbox->fll.x, bbox->fll.y, bbox->fll.z, |
---|
654 | bbox->nur.x, bbox->nur.y, bbox->nur.z); |
---|
655 | } |
---|
656 | |
---|
657 | return bbox; |
---|
658 | } |
---|
659 | |
---|