Mercurial > hg > orthanc-stone
annotate Framework/Layers/FrameRenderer.cpp @ 40:7207a407bcd8
shared copyright with osimis
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Wed, 04 Jan 2017 16:37:42 +0100 |
| parents | 517c46f527cd |
| children | 28956ed68280 |
| rev | line source |
|---|---|
| 0 | 1 /** |
| 2 * Stone of Orthanc | |
| 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
| 4 * Department, University Hospital of Liege, Belgium | |
|
40
7207a407bcd8
shared copyright with osimis
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
32
diff
changeset
|
5 * Copyright (C) 2017 Osimis, Belgium |
| 0 | 6 * |
| 7 * This program is free software: you can redistribute it and/or | |
| 8 * modify it under the terms of the GNU General Public License as | |
| 9 * published by the Free Software Foundation, either version 3 of the | |
| 10 * License, or (at your option) any later version. | |
| 11 * | |
| 12 * In addition, as a special exception, the copyright holders of this | |
| 13 * program give permission to link the code of its release with the | |
| 14 * OpenSSL project's "OpenSSL" library (or with modified versions of it | |
| 15 * that use the same license as the "OpenSSL" library), and distribute | |
| 16 * the linked executables. You must obey the GNU General Public License | |
| 17 * in all respects for all of the code used other than "OpenSSL". If you | |
| 18 * modify file(s) with this exception, you may extend this exception to | |
| 19 * your version of the file(s), but you are not obligated to do so. If | |
| 20 * you do not wish to do so, delete this exception statement from your | |
| 21 * version. If you delete this exception statement from all source files | |
| 22 * in the program, then also delete it here. | |
| 23 * | |
| 24 * This program is distributed in the hope that it will be useful, but | |
| 25 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 27 * General Public License for more details. | |
| 28 * | |
| 29 * You should have received a copy of the GNU General Public License | |
| 30 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 31 **/ | |
| 32 | |
| 33 | |
| 34 #include "FrameRenderer.h" | |
| 35 | |
| 36 #include "GrayscaleFrameRenderer.h" | |
| 37 #include "ColorFrameRenderer.h" | |
| 38 | |
| 16 | 39 #include "../../Resources/Orthanc/Core/OrthancException.h" |
| 0 | 40 |
| 41 namespace OrthancStone | |
| 42 { | |
| 43 static bool ComputePixelTransform(cairo_matrix_t& target, | |
| 44 const SliceGeometry& viewportSlice, | |
| 45 const SliceGeometry& frameSlice, | |
| 46 double pixelSpacingX, | |
| 47 double pixelSpacingY) | |
| 48 { | |
| 49 bool isOpposite; | |
| 50 if (!GeometryToolbox::IsParallelOrOpposite(isOpposite, viewportSlice.GetNormal(), frameSlice.GetNormal())) | |
| 51 { | |
| 52 return false; | |
| 53 } | |
| 54 else | |
| 55 { | |
| 56 double x0, y0, x1, y1, x2, y2; | |
| 57 viewportSlice.ProjectPoint(x0, y0, frameSlice.GetOrigin() | |
| 58 - 0.5 * pixelSpacingX * frameSlice.GetAxisX() | |
| 59 - 0.5 * pixelSpacingY * frameSlice.GetAxisY()); | |
| 60 viewportSlice.ProjectPoint(x1, y1, frameSlice.GetOrigin() | |
| 61 + 0.5 * pixelSpacingX * frameSlice.GetAxisX() | |
| 62 - 0.5 * pixelSpacingY * frameSlice.GetAxisY()); | |
| 63 viewportSlice.ProjectPoint(x2, y2, frameSlice.GetOrigin() | |
| 64 - 0.5 * pixelSpacingX * frameSlice.GetAxisX() | |
| 65 + 0.5 * pixelSpacingY * frameSlice.GetAxisY()); | |
| 66 | |
| 67 /** | |
| 68 * Now we solve the system of linear equations Ax + b = x', given: | |
| 69 * A [0 ; 0] + b = [x0 ; y0] | |
| 70 * A [1 ; 0] + b = [x1 ; y1] | |
| 71 * A [0 ; 1] + b = [x2 ; y2] | |
| 72 * <=> | |
| 73 * b = [x0 ; y0] | |
| 74 * A [1 ; 0] = [x1 ; y1] - b = [x1 - x0 ; y1 - y0] | |
| 75 * A [0 ; 1] = [x2 ; y2] - b = [x2 - x0 ; y2 - y0] | |
| 76 * <=> | |
| 77 * b = [x0 ; y0] | |
| 78 * [a11 ; a21] = [x1 - x0 ; y1 - y0] | |
| 79 * [a12 ; a22] = [x2 - x0 ; y2 - y0] | |
| 80 **/ | |
| 81 | |
| 82 cairo_matrix_init(&target, x1 - x0, y1 - y0, x2 - x0, y2 - y0, x0, y0); | |
| 83 | |
| 84 return true; | |
| 85 } | |
| 86 } | |
| 87 | |
| 88 | |
| 89 FrameRenderer::FrameRenderer(const SliceGeometry& viewportSlice, | |
| 90 const SliceGeometry& frameSlice, | |
| 91 double pixelSpacingX, | |
| 92 double pixelSpacingY, | |
| 93 bool isFullQuality) : | |
| 94 viewportSlice_(viewportSlice), | |
| 95 frameSlice_(frameSlice), | |
| 96 pixelSpacingX_(pixelSpacingX), | |
| 97 pixelSpacingY_(pixelSpacingY), | |
| 98 isFullQuality_(isFullQuality) | |
| 99 { | |
| 100 } | |
| 101 | |
| 102 | |
| 103 bool FrameRenderer::ComputeFrameExtent(double& x1, | |
| 104 double& y1, | |
| 105 double& x2, | |
| 106 double& y2, | |
| 107 const SliceGeometry& viewportSlice, | |
| 108 const SliceGeometry& frameSlice, | |
| 109 unsigned int frameWidth, | |
| 110 unsigned int frameHeight, | |
| 111 double pixelSpacingX, | |
| 112 double pixelSpacingY) | |
| 113 { | |
| 114 bool isOpposite; | |
| 115 if (!GeometryToolbox::IsParallelOrOpposite(isOpposite, viewportSlice.GetNormal(), frameSlice.GetNormal())) | |
| 116 { | |
| 117 return false; | |
| 118 } | |
| 119 else | |
| 120 { | |
| 121 cairo_matrix_t transform; | |
| 122 if (!ComputePixelTransform(transform, viewportSlice, frameSlice, pixelSpacingX, pixelSpacingY)) | |
| 123 { | |
| 124 return true; | |
| 125 } | |
| 126 | |
| 127 x1 = 0; | |
| 128 y1 = 0; | |
| 129 cairo_matrix_transform_point(&transform, &x1, &y1); | |
| 130 | |
| 131 x2 = frameWidth; | |
| 132 y2 = frameHeight; | |
| 133 cairo_matrix_transform_point(&transform, &x2, &y2); | |
| 134 | |
| 135 if (x1 > x2) | |
| 136 { | |
| 137 std::swap(x1, x2); | |
| 138 } | |
| 139 | |
| 140 if (y1 > y2) | |
| 141 { | |
| 142 std::swap(y1, y2); | |
| 143 } | |
| 144 | |
| 145 return true; | |
| 146 } | |
| 147 } | |
| 148 | |
| 149 | |
| 150 bool FrameRenderer::RenderLayer(CairoContext& context, | |
| 151 const ViewportGeometry& view) | |
| 152 { | |
| 153 if (!style_.visible_) | |
| 154 { | |
| 155 return true; | |
| 156 } | |
| 157 | |
| 158 if (display_.get() == NULL) | |
| 159 { | |
| 160 if (!ComputePixelTransform(transform_, viewportSlice_, frameSlice_, pixelSpacingX_, pixelSpacingY_)) | |
| 161 { | |
| 162 return true; | |
| 163 } | |
| 164 | |
| 165 display_.reset(GenerateDisplay(style_)); | |
| 166 } | |
| 167 | |
| 168 assert(display_.get() != NULL); | |
| 169 | |
| 170 cairo_t *cr = context.GetObject(); | |
| 171 | |
| 172 cairo_save(cr); | |
| 173 | |
| 174 cairo_transform(cr, &transform_); | |
| 175 //cairo_set_operator(cr, CAIRO_OPERATOR_OVER); | |
| 176 cairo_set_source_surface(cr, display_->GetObject(), 0, 0); | |
| 177 | |
| 178 switch (style_.interpolation_) | |
| 179 { | |
| 180 case ImageInterpolation_Nearest: | |
| 181 cairo_pattern_set_filter(cairo_get_source(cr), CAIRO_FILTER_NEAREST); | |
| 182 break; | |
| 183 | |
| 184 case ImageInterpolation_Linear: | |
| 185 cairo_pattern_set_filter(cairo_get_source(cr), CAIRO_FILTER_BILINEAR); | |
| 186 break; | |
| 187 | |
| 188 default: | |
| 189 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
| 190 } | |
| 191 | |
| 192 cairo_paint_with_alpha(cr, style_.alpha_); | |
| 193 | |
| 194 if (style_.drawGrid_) | |
| 195 { | |
| 196 context.SetSourceColor(style_.drawColor_); | |
| 197 cairo_set_line_width(cr, 0.5 / view.GetZoom()); | |
| 198 | |
| 199 for (unsigned int x = 0; x <= display_->GetWidth(); x++) | |
| 200 { | |
| 201 cairo_move_to(cr, x, 0); | |
| 202 cairo_line_to(cr, x, display_->GetHeight()); | |
| 203 } | |
| 204 | |
| 205 for (unsigned int y = 0; y <= display_->GetHeight(); y++) | |
| 206 { | |
| 207 cairo_move_to(cr, 0, y); | |
| 208 cairo_line_to(cr, display_->GetWidth(), y); | |
| 209 } | |
| 210 | |
| 211 cairo_stroke(cr); | |
| 212 } | |
| 213 | |
| 214 cairo_restore(cr); | |
| 215 | |
| 216 return true; | |
| 217 } | |
| 218 | |
| 219 | |
| 220 void FrameRenderer::SetLayerStyle(const RenderStyle& style) | |
| 221 { | |
| 222 style_ = style; | |
| 223 display_.reset(NULL); | |
| 224 } | |
| 225 | |
| 226 | |
| 227 ILayerRenderer* FrameRenderer::CreateRenderer(Orthanc::ImageAccessor* frame, | |
| 228 const SliceGeometry& viewportSlice, | |
| 229 const SliceGeometry& frameSlice, | |
| 32 | 230 const OrthancPlugins::IDicomDataset& dicom, |
| 0 | 231 double pixelSpacingX, |
| 232 double pixelSpacingY, | |
| 233 bool isFullQuality) | |
| 234 { | |
| 235 std::auto_ptr<Orthanc::ImageAccessor> protect(frame); | |
| 236 | |
| 237 if (frame->GetFormat() == Orthanc::PixelFormat_RGB24) | |
| 238 { | |
| 239 return new ColorFrameRenderer(protect.release(), viewportSlice, frameSlice, | |
| 240 pixelSpacingX, pixelSpacingY, isFullQuality); | |
| 241 } | |
| 242 else | |
| 243 { | |
| 244 DicomFrameConverter converter; | |
| 245 converter.ReadParameters(dicom); | |
| 246 return new GrayscaleFrameRenderer(protect.release(), converter, viewportSlice, frameSlice, | |
| 247 pixelSpacingX, pixelSpacingY, isFullQuality); | |
| 248 } | |
| 249 } | |
| 250 } |