Mercurial > hg > orthanc-stone

annotate Framework/Radiography/RadiographyMaskLayer.cpp @ 479:e3d316ba34ba am-touch-events

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cleanup
author am@osimis.io
date Wed, 13 Feb 2019 14:14:42 +0100
parents 017a66a2999b
children 2f6ecb5037ea
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1 /**
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2 * Stone of Orthanc
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 * Copyright (C) 2017-2018 Osimis S.A., Belgium
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6 *
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7 * This program is free software: you can redistribute it and/or
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8 * modify it under the terms of the GNU Affero General Public License
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9 * as published by the Free Software Foundation, either version 3 of
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10 * the License, or (at your option) any later version.
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11 *
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12 * This program is distributed in the hope that it will be useful, but
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13 * WITHOUT ANY WARRANTY; without even the implied warranty of
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 * Affero General Public License for more details.
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16 *
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17 * You should have received a copy of the GNU Affero General Public License
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18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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19 **/
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20
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21
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22 #include "RadiographyMaskLayer.h"
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23 #include "RadiographyDicomLayer.h"
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24
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25 #include "RadiographyScene.h"
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26 #include "Core/Images/Image.h"
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27 #include "Core/Images/ImageProcessing.h"
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28 #include <Core/OrthancException.h>
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29
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30 namespace OrthancStone
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31 {
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32 const unsigned char IN_MASK_VALUE = 0x00;
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33 const unsigned char OUT_MASK_VALUE = 0xFF;
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34
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35 const AffineTransform2D& RadiographyMaskLayer::GetTransform() const
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36 {
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37 return dicomLayer_.GetTransform();
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38 }
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39
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40 const AffineTransform2D& RadiographyMaskLayer::GetTransformInverse() const
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41 {
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42 return dicomLayer_.GetTransformInverse();
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43 }
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44
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45 void ComputeMaskExtent(unsigned int& left, unsigned int& right, unsigned int& top, unsigned int& bottom, const std::vector<MaskPoint>& corners)
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46 {
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47 left = std::numeric_limits<unsigned int>::max();
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48 right = std::numeric_limits<unsigned int>::min();
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49 top = std::numeric_limits<unsigned int>::max();
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50 bottom = std::numeric_limits<unsigned int>::min();
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51
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52 for (size_t i = 0; i < corners.size(); i++)
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53 {
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54 const MaskPoint& p = corners[i];
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55 left = std::min(p.x, left);
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56 right = std::max(p.x, right);
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57 bottom = std::max(p.y, bottom);
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58 top = std::min(p.y, top);
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59 }
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60 }
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61
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62 void RadiographyMaskLayer::SetCorners(const std::vector<MaskPoint>& corners)
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63 {
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64 corners_ = corners;
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65 invalidated_ = true;
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66 }
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67
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68 void RadiographyMaskLayer::Render(Orthanc::ImageAccessor& buffer,
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69 const AffineTransform2D& viewTransform,
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70 ImageInterpolation interpolation) const
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71 {
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72 if (dicomLayer_.GetWidth() == 0) // nothing to do if the DICOM layer is not displayed (or not loaded)
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73 return;
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74
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75 if (invalidated_)
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76 {
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77 mask_.reset(new Orthanc::Image(Orthanc::PixelFormat_Grayscale8, dicomLayer_.GetWidth(), dicomLayer_.GetHeight(), false));
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78
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79 DrawMask();
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80
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81 invalidated_ = false;
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82 }
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83
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84 {// rendering
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85 if (buffer.GetFormat() != Orthanc::PixelFormat_Float32)
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86 {
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87 throw Orthanc::OrthancException(Orthanc::ErrorCode_IncompatibleImageFormat);
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88 }
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89
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90 unsigned int cropX, cropY, cropWidth, cropHeight;
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91 dicomLayer_.GetCrop(cropX, cropY, cropWidth, cropHeight);
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92
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93 const AffineTransform2D t = AffineTransform2D::Combine(
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94 viewTransform, dicomLayer_.GetTransform(),
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95 AffineTransform2D::CreateOffset(cropX, cropY));
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96
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97 Orthanc::ImageAccessor cropped;
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98 mask_->GetRegion(cropped, cropX, cropY, cropWidth, cropHeight);
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99
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100 Orthanc::Image tmp(Orthanc::PixelFormat_Grayscale8, buffer.GetWidth(), buffer.GetHeight(), false);
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101
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102 t.Apply(tmp, cropped, interpolation, true /* clear */);
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103
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104 // Blit
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105 const unsigned int width = buffer.GetWidth();
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106 const unsigned int height = buffer.GetHeight();
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107
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108 for (unsigned int y = 0; y < height; y++)
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109 {
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110 float *q = reinterpret_cast<float*>(buffer.GetRow(y));
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111 const uint8_t *p = reinterpret_cast<uint8_t*>(tmp.GetRow(y));
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112
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113 for (unsigned int x = 0; x < width; x++, p++, q++)
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114 {
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115 if (*p == OUT_MASK_VALUE)
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116 *q = foreground_;
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117 // else keep the underlying pixel value
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118 }
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119 }
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120
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121 }
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122 }
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123
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124 void RadiographyMaskLayer::DrawMask() const
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125 {
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126 unsigned int left;
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127 unsigned int right;
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128 unsigned int top;
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129 unsigned int bottom;
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130
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131 ComputeMaskExtent(left, right, top, bottom, corners_);
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132
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133 // first fill the complete image
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134 Orthanc::ImageProcessing::Set(*mask_, OUT_MASK_VALUE);
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135
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136 {
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137 // from http://alienryderflex.com/polygon_fill/
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138 std::auto_ptr<int> raiiNodeX(new int(corners_.size()));
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139
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140 // convert all control points to double only once
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141 std::vector<double> cpx;
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142 std::vector<double> cpy;
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143 int cpSize = corners_.size();
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144 for (size_t i = 0; i < corners_.size(); i++)
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145 {
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146 cpx.push_back((double)corners_[i].x);
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147 cpy.push_back((double)corners_[i].y);
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148 }
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149
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150 std::vector<int> nodeX;
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151 nodeX.resize(cpSize);
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152 int nodes, pixelX, pixelY, i, j, swap ;
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153
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154 // Loop through the rows of the image.
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155 for (pixelY = (int)top; pixelY < (int)bottom; pixelY++)
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156 {
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157 double y = (double)pixelY;
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158 // Build a list of nodes.
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159 nodes = 0;
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160 j = cpSize - 1;
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161
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162 for (i = 0; i < cpSize; i++)
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163 {
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164 if ((cpy[i] <= y && cpy[j] >= y)
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165 || (cpy[j] <= y && cpy[i] >= y))
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166 {
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167 nodeX[nodes++]= (int)(cpx[i] + (y - cpy[i])/(cpy[j] - cpy[i]) *(cpx[j] - cpx[i]));
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168 }
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169 j=i;
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170 }
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171
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172 // Sort the nodes, via a simple “Bubble” sort.
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173 i=0;
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174 while (i < nodes-1)
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175 {
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176 if (nodeX[i] > nodeX[i+1])
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177 {
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178 swap = nodeX[i];
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179 nodeX[i] = nodeX[i+1];
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180 nodeX[i+1] = swap;
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181 if (i)
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182 i--;
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183 }
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184 else
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185 {
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186 i++;
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187 }
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188 }
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189
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190 unsigned char* row = reinterpret_cast<unsigned char*>(mask_->GetRow(pixelY));
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191 // Fill the pixels between node pairs.
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192 for (i=0; i<nodes; i+=2)
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193 {
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194 if (nodeX[i ]>=(int)right)
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195 break;
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196 if (nodeX[i+1]>= (int)left)
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197 {
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198 if (nodeX[i ]< (int)left )
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199 nodeX[i ]=(int)left ;
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200 if (nodeX[i+1]> (int)right)
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201 nodeX[i+1]=(int)right;
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202 for (pixelX = nodeX[i]; pixelX <= nodeX[i+1]; pixelX++)
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203 {
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204 *(row + pixelX) = IN_MASK_VALUE;
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205 }
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206 }
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207 }
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208 }
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209 }
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210 }
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211
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212 }