Mercurial > hg > orthanc-stone
annotate Framework/Layers/FrameRenderer.cpp @ 134:4cff7b1ed31d
upgrade to year 2018
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Tue, 02 Jan 2018 09:51:36 +0100 |
| parents | 28956ed68280 |
| children | fccffbf99ba1 |
| 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 | |
|
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4cff7b1ed31d
upgrade to year 2018
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
47
diff
changeset
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5 * Copyright (C) 2017-2018 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 "FrameRenderer.h" | |
| 23 | |
| 24 #include "GrayscaleFrameRenderer.h" | |
| 25 #include "ColorFrameRenderer.h" | |
| 26 | |
| 16 | 27 #include "../../Resources/Orthanc/Core/OrthancException.h" |
| 0 | 28 |
| 29 namespace OrthancStone | |
| 30 { | |
| 31 static bool ComputePixelTransform(cairo_matrix_t& target, | |
| 32 const SliceGeometry& viewportSlice, | |
| 33 const SliceGeometry& frameSlice, | |
| 34 double pixelSpacingX, | |
| 35 double pixelSpacingY) | |
| 36 { | |
| 37 bool isOpposite; | |
| 38 if (!GeometryToolbox::IsParallelOrOpposite(isOpposite, viewportSlice.GetNormal(), frameSlice.GetNormal())) | |
| 39 { | |
| 40 return false; | |
| 41 } | |
| 42 else | |
| 43 { | |
| 44 double x0, y0, x1, y1, x2, y2; | |
| 45 viewportSlice.ProjectPoint(x0, y0, frameSlice.GetOrigin() | |
| 46 - 0.5 * pixelSpacingX * frameSlice.GetAxisX() | |
| 47 - 0.5 * pixelSpacingY * frameSlice.GetAxisY()); | |
| 48 viewportSlice.ProjectPoint(x1, y1, frameSlice.GetOrigin() | |
| 49 + 0.5 * pixelSpacingX * frameSlice.GetAxisX() | |
| 50 - 0.5 * pixelSpacingY * frameSlice.GetAxisY()); | |
| 51 viewportSlice.ProjectPoint(x2, y2, frameSlice.GetOrigin() | |
| 52 - 0.5 * pixelSpacingX * frameSlice.GetAxisX() | |
| 53 + 0.5 * pixelSpacingY * frameSlice.GetAxisY()); | |
| 54 | |
| 55 /** | |
| 56 * Now we solve the system of linear equations Ax + b = x', given: | |
| 57 * A [0 ; 0] + b = [x0 ; y0] | |
| 58 * A [1 ; 0] + b = [x1 ; y1] | |
| 59 * A [0 ; 1] + b = [x2 ; y2] | |
| 60 * <=> | |
| 61 * b = [x0 ; y0] | |
| 62 * A [1 ; 0] = [x1 ; y1] - b = [x1 - x0 ; y1 - y0] | |
| 63 * A [0 ; 1] = [x2 ; y2] - b = [x2 - x0 ; y2 - y0] | |
| 64 * <=> | |
| 65 * b = [x0 ; y0] | |
| 66 * [a11 ; a21] = [x1 - x0 ; y1 - y0] | |
| 67 * [a12 ; a22] = [x2 - x0 ; y2 - y0] | |
| 68 **/ | |
| 69 | |
| 70 cairo_matrix_init(&target, x1 - x0, y1 - y0, x2 - x0, y2 - y0, x0, y0); | |
| 71 | |
| 72 return true; | |
| 73 } | |
| 74 } | |
| 75 | |
| 76 | |
| 77 FrameRenderer::FrameRenderer(const SliceGeometry& viewportSlice, | |
| 78 const SliceGeometry& frameSlice, | |
| 79 double pixelSpacingX, | |
| 80 double pixelSpacingY, | |
| 81 bool isFullQuality) : | |
| 82 viewportSlice_(viewportSlice), | |
| 83 frameSlice_(frameSlice), | |
| 84 pixelSpacingX_(pixelSpacingX), | |
| 85 pixelSpacingY_(pixelSpacingY), | |
| 86 isFullQuality_(isFullQuality) | |
| 87 { | |
| 88 } | |
| 89 | |
| 90 | |
| 91 bool FrameRenderer::ComputeFrameExtent(double& x1, | |
| 92 double& y1, | |
| 93 double& x2, | |
| 94 double& y2, | |
| 95 const SliceGeometry& viewportSlice, | |
| 96 const SliceGeometry& frameSlice, | |
| 97 unsigned int frameWidth, | |
| 98 unsigned int frameHeight, | |
| 99 double pixelSpacingX, | |
| 100 double pixelSpacingY) | |
| 101 { | |
| 102 bool isOpposite; | |
| 103 if (!GeometryToolbox::IsParallelOrOpposite(isOpposite, viewportSlice.GetNormal(), frameSlice.GetNormal())) | |
| 104 { | |
| 105 return false; | |
| 106 } | |
| 107 else | |
| 108 { | |
| 109 cairo_matrix_t transform; | |
| 110 if (!ComputePixelTransform(transform, viewportSlice, frameSlice, pixelSpacingX, pixelSpacingY)) | |
| 111 { | |
| 112 return true; | |
| 113 } | |
| 114 | |
| 115 x1 = 0; | |
| 116 y1 = 0; | |
| 117 cairo_matrix_transform_point(&transform, &x1, &y1); | |
| 118 | |
| 119 x2 = frameWidth; | |
| 120 y2 = frameHeight; | |
| 121 cairo_matrix_transform_point(&transform, &x2, &y2); | |
| 122 | |
| 123 if (x1 > x2) | |
| 124 { | |
| 125 std::swap(x1, x2); | |
| 126 } | |
| 127 | |
| 128 if (y1 > y2) | |
| 129 { | |
| 130 std::swap(y1, y2); | |
| 131 } | |
| 132 | |
| 133 return true; | |
| 134 } | |
| 135 } | |
| 136 | |
| 137 | |
| 138 bool FrameRenderer::RenderLayer(CairoContext& context, | |
| 139 const ViewportGeometry& view) | |
| 140 { | |
| 141 if (!style_.visible_) | |
| 142 { | |
| 143 return true; | |
| 144 } | |
| 145 | |
| 146 if (display_.get() == NULL) | |
| 147 { | |
| 148 if (!ComputePixelTransform(transform_, viewportSlice_, frameSlice_, pixelSpacingX_, pixelSpacingY_)) | |
| 149 { | |
| 150 return true; | |
| 151 } | |
| 152 | |
| 153 display_.reset(GenerateDisplay(style_)); | |
| 154 } | |
| 155 | |
| 156 assert(display_.get() != NULL); | |
| 157 | |
| 158 cairo_t *cr = context.GetObject(); | |
| 159 | |
| 160 cairo_save(cr); | |
| 161 | |
| 162 cairo_transform(cr, &transform_); | |
| 163 //cairo_set_operator(cr, CAIRO_OPERATOR_OVER); | |
| 164 cairo_set_source_surface(cr, display_->GetObject(), 0, 0); | |
| 165 | |
| 166 switch (style_.interpolation_) | |
| 167 { | |
| 168 case ImageInterpolation_Nearest: | |
| 169 cairo_pattern_set_filter(cairo_get_source(cr), CAIRO_FILTER_NEAREST); | |
| 170 break; | |
| 171 | |
| 172 case ImageInterpolation_Linear: | |
| 173 cairo_pattern_set_filter(cairo_get_source(cr), CAIRO_FILTER_BILINEAR); | |
| 174 break; | |
| 175 | |
| 176 default: | |
| 177 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
| 178 } | |
| 179 | |
| 180 cairo_paint_with_alpha(cr, style_.alpha_); | |
| 181 | |
| 182 if (style_.drawGrid_) | |
| 183 { | |
| 184 context.SetSourceColor(style_.drawColor_); | |
| 185 cairo_set_line_width(cr, 0.5 / view.GetZoom()); | |
| 186 | |
| 187 for (unsigned int x = 0; x <= display_->GetWidth(); x++) | |
| 188 { | |
| 189 cairo_move_to(cr, x, 0); | |
| 190 cairo_line_to(cr, x, display_->GetHeight()); | |
| 191 } | |
| 192 | |
| 193 for (unsigned int y = 0; y <= display_->GetHeight(); y++) | |
| 194 { | |
| 195 cairo_move_to(cr, 0, y); | |
| 196 cairo_line_to(cr, display_->GetWidth(), y); | |
| 197 } | |
| 198 | |
| 199 cairo_stroke(cr); | |
| 200 } | |
| 201 | |
| 202 cairo_restore(cr); | |
| 203 | |
| 204 return true; | |
| 205 } | |
| 206 | |
| 207 | |
| 208 void FrameRenderer::SetLayerStyle(const RenderStyle& style) | |
| 209 { | |
| 210 style_ = style; | |
| 211 display_.reset(NULL); | |
| 212 } | |
| 213 | |
| 214 | |
| 215 ILayerRenderer* FrameRenderer::CreateRenderer(Orthanc::ImageAccessor* frame, | |
| 216 const SliceGeometry& viewportSlice, | |
| 217 const SliceGeometry& frameSlice, | |
| 32 | 218 const OrthancPlugins::IDicomDataset& dicom, |
| 0 | 219 double pixelSpacingX, |
| 220 double pixelSpacingY, | |
| 221 bool isFullQuality) | |
| 222 { | |
| 223 std::auto_ptr<Orthanc::ImageAccessor> protect(frame); | |
| 224 | |
| 225 if (frame->GetFormat() == Orthanc::PixelFormat_RGB24) | |
| 226 { | |
| 227 return new ColorFrameRenderer(protect.release(), viewportSlice, frameSlice, | |
| 228 pixelSpacingX, pixelSpacingY, isFullQuality); | |
| 229 } | |
| 230 else | |
| 231 { | |
| 232 DicomFrameConverter converter; | |
| 233 converter.ReadParameters(dicom); | |
| 234 return new GrayscaleFrameRenderer(protect.release(), converter, viewportSlice, frameSlice, | |
| 235 pixelSpacingX, pixelSpacingY, isFullQuality); | |
| 236 } | |
| 237 } | |
| 238 } |