Mercurial > hg > orthanc-stone
annotate Framework/Layers/GrayscaleFrameRenderer.cpp @ 479:e3d316ba34ba am-touch-events
cleanup
author | am@osimis.io |
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date | Wed, 13 Feb 2019 14:14:42 +0100 |
parents | b70e9be013e4 |
children | 11fa6f00e33c aaeec7be8fb7 |
rev | line source |
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0 | 1 /** |
2 * Stone of Orthanc | |
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
4 * Department, University Hospital of Liege, Belgium | |
439 | 5 * Copyright (C) 2017-2019 Osimis S.A., Belgium |
0 | 6 * |
7 * This program is free software: you can redistribute it and/or | |
47 | 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. | |
0 | 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 | |
47 | 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 | |
0 | 18 * along with this program. If not, see <http://www.gnu.org/licenses/>. |
19 **/ | |
20 | |
21 | |
22 #include "GrayscaleFrameRenderer.h" | |
23 | |
378 | 24 #include <Core/Images/Image.h> |
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25 #include <Core/OrthancException.h> |
0 | 26 |
27 namespace OrthancStone | |
28 { | |
29 CairoSurface* GrayscaleFrameRenderer::GenerateDisplay(const RenderStyle& style) | |
30 { | |
338 | 31 assert(frame_->GetFormat() == Orthanc::PixelFormat_Float32); |
32 | |
0 | 33 std::auto_ptr<CairoSurface> result; |
34 | |
35 float windowCenter, windowWidth; | |
36 style.ComputeWindowing(windowCenter, windowWidth, | |
37 defaultWindowCenter_, defaultWindowWidth_); | |
38 | |
39 float x0 = windowCenter - windowWidth / 2.0f; | |
40 float x1 = windowCenter + windowWidth / 2.0f; | |
41 | |
42 //LOG(INFO) << "Window: " << x0 << " => " << x1; | |
43 | |
44 result.reset(new CairoSurface(frame_->GetWidth(), frame_->GetHeight())); | |
45 | |
46 const uint8_t* lut = NULL; | |
47 if (style.applyLut_) | |
48 { | |
49 if (Orthanc::EmbeddedResources::GetFileResourceSize(style.lut_) != 3 * 256) | |
50 { | |
51 // Invalid colormap | |
52 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); | |
53 } | |
54 | |
55 lut = reinterpret_cast<const uint8_t*>(Orthanc::EmbeddedResources::GetFileResourceBuffer(style.lut_)); | |
56 } | |
106 | 57 |
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58 Orthanc::ImageAccessor target; |
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59 result->GetWriteableAccessor(target); |
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60 |
106 | 61 const unsigned int width = target.GetWidth(); |
62 const unsigned int height = target.GetHeight(); | |
63 | |
64 for (unsigned int y = 0; y < height; y++) | |
0 | 65 { |
66 const float* p = reinterpret_cast<const float*>(frame_->GetConstRow(y)); | |
67 uint8_t* q = reinterpret_cast<uint8_t*>(target.GetRow(y)); | |
68 | |
106 | 69 for (unsigned int x = 0; x < width; x++, p++, q += 4) |
0 | 70 { |
71 uint8_t v = 0; | |
72 if (windowWidth >= 0.001f) // Avoid division by zero | |
73 { | |
74 if (*p >= x1) | |
75 { | |
76 v = 255; | |
77 } | |
78 else if (*p <= x0) | |
79 { | |
80 v = 0; | |
81 } | |
82 else | |
83 { | |
84 // https://en.wikipedia.org/wiki/Linear_interpolation | |
85 v = static_cast<uint8_t>(255.0f * (*p - x0) / (x1 - x0)); | |
86 } | |
87 | |
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88 if (style.reverse_ ^ (photometric_ == Orthanc::PhotometricInterpretation_Monochrome1)) |
0 | 89 { |
90 v = 255 - v; | |
91 } | |
92 } | |
93 | |
94 if (style.applyLut_) | |
95 { | |
96 assert(lut != NULL); | |
97 q[3] = 255; | |
98 q[2] = lut[3 * v]; | |
99 q[1] = lut[3 * v + 1]; | |
100 q[0] = lut[3 * v + 2]; | |
101 } | |
102 else | |
103 { | |
104 q[3] = 255; | |
105 q[2] = v; | |
106 q[1] = v; | |
107 q[0] = v; | |
108 } | |
109 } | |
110 } | |
111 | |
112 return result.release(); | |
113 } | |
114 | |
115 | |
378 | 116 GrayscaleFrameRenderer::GrayscaleFrameRenderer(const Orthanc::ImageAccessor& frame, |
0 | 117 const DicomFrameConverter& converter, |
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118 const CoordinateSystem3D& framePlane, |
0 | 119 double pixelSpacingX, |
120 double pixelSpacingY, | |
121 bool isFullQuality) : | |
394
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122 FrameRenderer(framePlane, pixelSpacingX, pixelSpacingY, isFullQuality), |
378 | 123 frame_(Orthanc::Image::Clone(frame)), |
0 | 124 defaultWindowCenter_(converter.GetDefaultWindowCenter()), |
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125 defaultWindowWidth_(converter.GetDefaultWindowWidth()), |
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126 photometric_(converter.GetPhotometricInterpretation()) |
0 | 127 { |
378 | 128 if (frame_.get() == NULL) |
0 | 129 { |
130 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
131 } | |
132 | |
338 | 133 converter.ConvertFrameInplace(frame_); |
0 | 134 assert(frame_.get() != NULL); |
135 | |
136 if (frame_->GetFormat() != Orthanc::PixelFormat_Float32) | |
137 { | |
138 throw Orthanc::OrthancException(Orthanc::ErrorCode_IncompatibleImageFormat); | |
139 } | |
140 } | |
141 } |