Mercurial > hg > orthanc-stone
annotate Framework/Radiography/RadiographyAlphaLayer.cpp @ 1196:a5f2a6b04a31
RadiographyScene: windowing is now only applied to the Dicom layer
| author | Alain Mazy <alain@mazy.be> |
|---|---|
| date | Wed, 27 Nov 2019 17:51:33 +0100 |
| parents | 42dadae61fa9 |
| children | ab958fd99b07 |
| rev | line source |
|---|---|
| 430 | 1 /** |
| 2 * Stone of Orthanc | |
| 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
| 4 * Department, University Hospital of Liege, Belgium | |
| 5 * Copyright (C) 2017-2018 Osimis S.A., Belgium | |
| 6 * | |
| 7 * This program is free software: you can redistribute it and/or | |
| 8 * modify it under the terms of the GNU Affero General Public License | |
| 9 * as published by the Free Software Foundation, either version 3 of | |
| 10 * the License, or (at your option) any later version. | |
| 11 * | |
| 12 * This program is distributed in the hope that it will be useful, but | |
| 13 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 15 * Affero General Public License for more details. | |
| 16 * | |
| 17 * You should have received a copy of the GNU Affero General Public License | |
| 18 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 19 **/ | |
| 20 | |
| 21 | |
| 22 #include "RadiographyAlphaLayer.h" | |
| 23 | |
| 24 #include "RadiographyScene.h" | |
| 25 | |
| 26 #include <Core/Images/Image.h> | |
| 27 #include <Core/OrthancException.h> | |
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28 #include "../Toolbox/ImageGeometry.h" |
| 430 | 29 |
| 30 namespace OrthancStone | |
| 31 { | |
| 32 | |
| 33 void RadiographyAlphaLayer::SetAlpha(Orthanc::ImageAccessor* image) | |
| 34 { | |
| 35 std::auto_ptr<Orthanc::ImageAccessor> raii(image); | |
| 36 | |
| 37 if (image == NULL) | |
| 38 { | |
| 39 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
| 40 } | |
| 41 | |
| 42 if (image->GetFormat() != Orthanc::PixelFormat_Grayscale8) | |
| 43 { | |
| 44 throw Orthanc::OrthancException(Orthanc::ErrorCode_IncompatibleImageFormat); | |
| 45 } | |
| 46 | |
| 47 SetSize(image->GetWidth(), image->GetHeight()); | |
| 48 alpha_ = raii; | |
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49 |
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50 BroadcastMessage(RadiographyLayer::LayerEditedMessage(*this)); |
| 430 | 51 } |
| 52 | |
| 53 void RadiographyAlphaLayer::Render(Orthanc::ImageAccessor& buffer, | |
| 54 const AffineTransform2D& viewTransform, | |
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55 ImageInterpolation interpolation, |
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56 float windowCenter, |
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57 float windowWidth, |
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58 bool applyWindowing) const |
| 430 | 59 { |
| 60 if (alpha_.get() == NULL) | |
| 61 { | |
| 62 return; | |
| 63 } | |
| 64 | |
| 65 if (buffer.GetFormat() != Orthanc::PixelFormat_Float32) | |
| 66 { | |
| 67 throw Orthanc::OrthancException(Orthanc::ErrorCode_IncompatibleImageFormat); | |
| 68 } | |
| 69 | |
| 70 unsigned int cropX, cropY, cropWidth, cropHeight; | |
| 71 GetCrop(cropX, cropY, cropWidth, cropHeight); | |
| 72 | |
| 73 const AffineTransform2D t = AffineTransform2D::Combine( | |
| 74 viewTransform, GetTransform(), | |
| 75 AffineTransform2D::CreateOffset(cropX, cropY)); | |
| 76 | |
| 77 Orthanc::ImageAccessor cropped; | |
| 78 alpha_->GetRegion(cropped, cropX, cropY, cropWidth, cropHeight); | |
| 79 | |
| 80 Orthanc::Image tmp(Orthanc::PixelFormat_Grayscale8, buffer.GetWidth(), buffer.GetHeight(), false); | |
| 81 | |
| 82 t.Apply(tmp, cropped, interpolation, true /* clear */); | |
| 83 | |
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84 unsigned int x1, y1, x2, y2; |
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85 OrthancStone::GetProjectiveTransformExtent(x1, y1, x2, y2, |
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86 t.GetHomogeneousMatrix(), |
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87 cropped.GetWidth(), |
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88 cropped.GetHeight(), |
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89 buffer.GetWidth(), |
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90 buffer.GetHeight()); |
| 430 | 91 |
| 92 float value = foreground_; | |
| 93 | |
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94 if (!applyWindowing) // if applying the windowing, it means we are ie rendering the image for a realtime visualization -> the foreground_ value is the value we want to see on the screen -> don't change it |
| 430 | 95 { |
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96 // if not applying the windowing, it means ie that we are saving a dicom image to file and the windowing will be applied by a viewer later on -> we want the "foreground" value to be correct once the windowing will be applied |
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97 value = windowCenter - windowWidth/2 + (foreground_ / 65535.0f) * windowWidth; |
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98 |
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99 if (value < 0.0f) |
| 430 | 100 { |
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101 value = 0.0f; |
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102 } |
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103 if (value > 65535.0f) |
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104 { |
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105 value = 65535.0f; |
| 430 | 106 } |
| 107 } | |
| 108 | |
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109 for (unsigned int y = y1; y <= y2; y++) |
| 430 | 110 { |
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111 float *q = reinterpret_cast<float*>(buffer.GetRow(y)) + x1; |
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112 const uint8_t *p = reinterpret_cast<uint8_t*>(tmp.GetRow(y)) + x1; |
| 430 | 113 |
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114 for (unsigned int x = x1; x <= x2; x++, p++, q++) |
| 430 | 115 { |
| 116 float a = static_cast<float>(*p) / 255.0f; | |
| 117 | |
| 118 *q = (a * value + (1.0f - a) * (*q)); | |
| 119 } | |
| 120 } | |
| 121 } | |
| 122 | |
| 123 bool RadiographyAlphaLayer::GetRange(float& minValue, | |
| 124 float& maxValue) const | |
| 125 { | |
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126 minValue = 0; |
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127 maxValue = 0; |
| 430 | 128 |
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129 if (foreground_ < 0) |
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130 { |
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131 minValue = foreground_; |
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132 } |
| 430 | 133 |
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134 if (foreground_ > 0) |
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135 { |
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136 maxValue = foreground_; |
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137 } |
| 430 | 138 |
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139 return true; |
| 430 | 140 } |
| 141 } |