Mercurial > hg > orthanc-stone
annotate Framework/Layers/FrameRenderer.cpp @ 66:298f375dcb68 wasm
LayerWidget
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Wed, 17 May 2017 22:03:09 +0200 |
| parents | 28956ed68280 |
| children | f5f54ed8d307 |
| 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 | |
| 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; | |
| 66 | 38 if (!GeometryToolbox::IsParallelOrOpposite(isOpposite, |
| 39 viewportSlice.GetNormal(), | |
| 40 frameSlice.GetNormal())) | |
| 0 | 41 { |
| 42 return false; | |
| 43 } | |
| 44 else | |
| 45 { | |
| 46 double x0, y0, x1, y1, x2, y2; | |
| 47 viewportSlice.ProjectPoint(x0, y0, frameSlice.GetOrigin() | |
| 48 - 0.5 * pixelSpacingX * frameSlice.GetAxisX() | |
| 49 - 0.5 * pixelSpacingY * frameSlice.GetAxisY()); | |
| 50 viewportSlice.ProjectPoint(x1, y1, frameSlice.GetOrigin() | |
| 51 + 0.5 * pixelSpacingX * frameSlice.GetAxisX() | |
| 52 - 0.5 * pixelSpacingY * frameSlice.GetAxisY()); | |
| 53 viewportSlice.ProjectPoint(x2, y2, frameSlice.GetOrigin() | |
| 54 - 0.5 * pixelSpacingX * frameSlice.GetAxisX() | |
| 55 + 0.5 * pixelSpacingY * frameSlice.GetAxisY()); | |
| 56 | |
| 57 /** | |
| 58 * Now we solve the system of linear equations Ax + b = x', given: | |
| 59 * A [0 ; 0] + b = [x0 ; y0] | |
| 60 * A [1 ; 0] + b = [x1 ; y1] | |
| 61 * A [0 ; 1] + b = [x2 ; y2] | |
| 62 * <=> | |
| 63 * b = [x0 ; y0] | |
| 64 * A [1 ; 0] = [x1 ; y1] - b = [x1 - x0 ; y1 - y0] | |
| 65 * A [0 ; 1] = [x2 ; y2] - b = [x2 - x0 ; y2 - y0] | |
| 66 * <=> | |
| 67 * b = [x0 ; y0] | |
| 68 * [a11 ; a21] = [x1 - x0 ; y1 - y0] | |
| 69 * [a12 ; a22] = [x2 - x0 ; y2 - y0] | |
| 70 **/ | |
| 71 | |
| 72 cairo_matrix_init(&target, x1 - x0, y1 - y0, x2 - x0, y2 - y0, x0, y0); | |
| 73 | |
| 74 return true; | |
| 75 } | |
| 76 } | |
| 77 | |
| 78 | |
| 79 FrameRenderer::FrameRenderer(const SliceGeometry& viewportSlice, | |
| 80 const SliceGeometry& frameSlice, | |
| 81 double pixelSpacingX, | |
| 82 double pixelSpacingY, | |
| 83 bool isFullQuality) : | |
| 84 viewportSlice_(viewportSlice), | |
| 85 frameSlice_(frameSlice), | |
| 86 pixelSpacingX_(pixelSpacingX), | |
| 87 pixelSpacingY_(pixelSpacingY), | |
| 88 isFullQuality_(isFullQuality) | |
| 89 { | |
| 90 } | |
| 91 | |
| 92 | |
| 93 bool FrameRenderer::ComputeFrameExtent(double& x1, | |
| 94 double& y1, | |
| 95 double& x2, | |
| 96 double& y2, | |
| 97 const SliceGeometry& viewportSlice, | |
| 98 const SliceGeometry& frameSlice, | |
| 99 unsigned int frameWidth, | |
| 100 unsigned int frameHeight, | |
| 101 double pixelSpacingX, | |
| 102 double pixelSpacingY) | |
| 103 { | |
| 104 bool isOpposite; | |
| 105 if (!GeometryToolbox::IsParallelOrOpposite(isOpposite, viewportSlice.GetNormal(), frameSlice.GetNormal())) | |
| 106 { | |
| 107 return false; | |
| 108 } | |
| 109 else | |
| 110 { | |
| 111 cairo_matrix_t transform; | |
| 112 if (!ComputePixelTransform(transform, viewportSlice, frameSlice, pixelSpacingX, pixelSpacingY)) | |
| 113 { | |
| 114 return true; | |
| 115 } | |
| 116 | |
| 117 x1 = 0; | |
| 118 y1 = 0; | |
| 119 cairo_matrix_transform_point(&transform, &x1, &y1); | |
| 120 | |
| 121 x2 = frameWidth; | |
| 122 y2 = frameHeight; | |
| 123 cairo_matrix_transform_point(&transform, &x2, &y2); | |
| 124 | |
| 125 if (x1 > x2) | |
| 126 { | |
| 127 std::swap(x1, x2); | |
| 128 } | |
| 129 | |
| 130 if (y1 > y2) | |
| 131 { | |
| 132 std::swap(y1, y2); | |
| 133 } | |
| 134 | |
| 135 return true; | |
| 136 } | |
| 137 } | |
| 138 | |
| 139 | |
| 140 bool FrameRenderer::RenderLayer(CairoContext& context, | |
| 141 const ViewportGeometry& view) | |
| 142 { | |
| 143 if (!style_.visible_) | |
| 144 { | |
| 145 return true; | |
| 146 } | |
| 147 | |
| 148 if (display_.get() == NULL) | |
| 149 { | |
| 66 | 150 if (!ComputePixelTransform(transform_, viewportSlice_, frameSlice_, |
| 151 pixelSpacingX_, pixelSpacingY_)) | |
| 0 | 152 { |
| 153 return true; | |
| 154 } | |
| 155 | |
| 156 display_.reset(GenerateDisplay(style_)); | |
| 157 } | |
| 158 | |
| 159 assert(display_.get() != NULL); | |
| 160 | |
| 161 cairo_t *cr = context.GetObject(); | |
| 162 | |
| 163 cairo_save(cr); | |
| 164 | |
| 165 cairo_transform(cr, &transform_); | |
| 166 //cairo_set_operator(cr, CAIRO_OPERATOR_OVER); | |
| 167 cairo_set_source_surface(cr, display_->GetObject(), 0, 0); | |
| 168 | |
| 169 switch (style_.interpolation_) | |
| 170 { | |
| 171 case ImageInterpolation_Nearest: | |
| 172 cairo_pattern_set_filter(cairo_get_source(cr), CAIRO_FILTER_NEAREST); | |
| 173 break; | |
| 174 | |
| 175 case ImageInterpolation_Linear: | |
| 176 cairo_pattern_set_filter(cairo_get_source(cr), CAIRO_FILTER_BILINEAR); | |
| 177 break; | |
| 178 | |
| 179 default: | |
| 180 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
| 181 } | |
| 182 | |
| 183 cairo_paint_with_alpha(cr, style_.alpha_); | |
| 184 | |
| 185 if (style_.drawGrid_) | |
| 186 { | |
| 187 context.SetSourceColor(style_.drawColor_); | |
| 188 cairo_set_line_width(cr, 0.5 / view.GetZoom()); | |
| 189 | |
| 190 for (unsigned int x = 0; x <= display_->GetWidth(); x++) | |
| 191 { | |
| 192 cairo_move_to(cr, x, 0); | |
| 193 cairo_line_to(cr, x, display_->GetHeight()); | |
| 194 } | |
| 195 | |
| 196 for (unsigned int y = 0; y <= display_->GetHeight(); y++) | |
| 197 { | |
| 198 cairo_move_to(cr, 0, y); | |
| 199 cairo_line_to(cr, display_->GetWidth(), y); | |
| 200 } | |
| 201 | |
| 202 cairo_stroke(cr); | |
| 203 } | |
| 204 | |
| 205 cairo_restore(cr); | |
| 206 | |
| 207 return true; | |
| 208 } | |
| 209 | |
| 210 | |
| 211 void FrameRenderer::SetLayerStyle(const RenderStyle& style) | |
| 212 { | |
| 213 style_ = style; | |
| 214 display_.reset(NULL); | |
| 215 } | |
| 216 | |
| 217 | |
| 218 ILayerRenderer* FrameRenderer::CreateRenderer(Orthanc::ImageAccessor* frame, | |
| 219 const SliceGeometry& viewportSlice, | |
| 220 const SliceGeometry& frameSlice, | |
| 32 | 221 const OrthancPlugins::IDicomDataset& dicom, |
| 0 | 222 double pixelSpacingX, |
| 223 double pixelSpacingY, | |
| 224 bool isFullQuality) | |
| 225 { | |
| 226 std::auto_ptr<Orthanc::ImageAccessor> protect(frame); | |
| 227 | |
| 228 if (frame->GetFormat() == Orthanc::PixelFormat_RGB24) | |
| 229 { | |
| 230 return new ColorFrameRenderer(protect.release(), viewportSlice, frameSlice, | |
| 231 pixelSpacingX, pixelSpacingY, isFullQuality); | |
| 232 } | |
| 233 else | |
| 234 { | |
| 235 DicomFrameConverter converter; | |
| 236 converter.ReadParameters(dicom); | |
| 237 return new GrayscaleFrameRenderer(protect.release(), converter, viewportSlice, frameSlice, | |
| 238 pixelSpacingX, pixelSpacingY, isFullQuality); | |
| 239 } | |
| 240 } | |
| 241 } |