Mercurial > hg > orthanc-stone
comparison Framework/Deprecated/Toolbox/ViewportGeometry.cpp @ 732:c35e98d22764
move Deprecated classes to a separate folder
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Tue, 21 May 2019 14:27:35 +0200 |
parents | Framework/Toolbox/ViewportGeometry.cpp@4f2416d519b4 |
children | d33ae2b0db9d |
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729:529189f399ec | 732:c35e98d22764 |
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1 /** | |
2 * Stone of Orthanc | |
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
4 * Department, University Hospital of Liege, Belgium | |
5 * Copyright (C) 2017-2019 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 "ViewportGeometry.h" | |
23 | |
24 #include <Core/Logging.h> | |
25 #include <Core/OrthancException.h> | |
26 | |
27 #include <boost/math/special_functions/round.hpp> | |
28 | |
29 namespace Deprecated | |
30 { | |
31 void ViewportGeometry::ComputeTransform() | |
32 { | |
33 // The following lines must be read in reverse order! | |
34 cairo_matrix_t tmp; | |
35 | |
36 // Bring the center of the scene to the center of the view | |
37 cairo_matrix_init_translate(&transform_, | |
38 panX_ + static_cast<double>(width_) / 2.0, | |
39 panY_ + static_cast<double>(height_) / 2.0); | |
40 | |
41 // Apply the zoom around (0,0) | |
42 cairo_matrix_init_scale(&tmp, zoom_, zoom_); | |
43 cairo_matrix_multiply(&transform_, &tmp, &transform_); | |
44 | |
45 // Bring the center of the scene to (0,0) | |
46 cairo_matrix_init_translate(&tmp, | |
47 -(sceneExtent_.GetX1() + sceneExtent_.GetX2()) / 2.0, | |
48 -(sceneExtent_.GetY1() + sceneExtent_.GetY2()) / 2.0); | |
49 cairo_matrix_multiply(&transform_, &tmp, &transform_); | |
50 } | |
51 | |
52 | |
53 ViewportGeometry::ViewportGeometry() | |
54 { | |
55 width_ = 0; | |
56 height_ = 0; | |
57 | |
58 zoom_ = 1; | |
59 panX_ = 0; | |
60 panY_ = 0; | |
61 | |
62 ComputeTransform(); | |
63 } | |
64 | |
65 | |
66 void ViewportGeometry::SetDisplaySize(unsigned int width, | |
67 unsigned int height) | |
68 { | |
69 if (width_ != width || | |
70 height_ != height) | |
71 { | |
72 LOG(INFO) << "New display size: " << width << "x" << height; | |
73 | |
74 width_ = width; | |
75 height_ = height; | |
76 | |
77 ComputeTransform(); | |
78 } | |
79 } | |
80 | |
81 | |
82 void ViewportGeometry::SetSceneExtent(const OrthancStone::Extent2D& extent) | |
83 { | |
84 LOG(INFO) << "New scene extent: (" | |
85 << extent.GetX1() << "," << extent.GetY1() << ") => (" | |
86 << extent.GetX2() << "," << extent.GetY2() << ")"; | |
87 | |
88 sceneExtent_ = extent; | |
89 ComputeTransform(); | |
90 } | |
91 | |
92 | |
93 void ViewportGeometry::MapDisplayToScene(double& sceneX /* out */, | |
94 double& sceneY /* out */, | |
95 double x, | |
96 double y) const | |
97 { | |
98 cairo_matrix_t transform = transform_; | |
99 | |
100 if (cairo_matrix_invert(&transform) != CAIRO_STATUS_SUCCESS) | |
101 { | |
102 LOG(ERROR) << "Cannot invert singular matrix"; | |
103 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); | |
104 } | |
105 | |
106 sceneX = x; | |
107 sceneY = y; | |
108 cairo_matrix_transform_point(&transform, &sceneX, &sceneY); | |
109 } | |
110 | |
111 | |
112 void ViewportGeometry::MapSceneToDisplay(int& displayX /* out */, | |
113 int& displayY /* out */, | |
114 double x, | |
115 double y) const | |
116 { | |
117 cairo_matrix_transform_point(&transform_, &x, &y); | |
118 | |
119 displayX = static_cast<int>(boost::math::iround(x)); | |
120 displayY = static_cast<int>(boost::math::iround(y)); | |
121 } | |
122 | |
123 | |
124 void ViewportGeometry::MapPixelCenterToScene(std::vector<Touch>& sceneTouches /* out */, | |
125 const std::vector<Touch>& displayTouches) const | |
126 { | |
127 double sceneX, sceneY; | |
128 sceneTouches.clear(); | |
129 for (size_t t = 0; t < displayTouches.size(); t++) | |
130 { | |
131 MapPixelCenterToScene( | |
132 sceneX, | |
133 sceneY, | |
134 static_cast<int>(displayTouches[t].x), | |
135 static_cast<int>(displayTouches[t].y)); | |
136 | |
137 sceneTouches.push_back(Touch((float)sceneX, (float)sceneY)); | |
138 } | |
139 } | |
140 | |
141 void ViewportGeometry::MapPixelCenterToScene(double& sceneX, | |
142 double& sceneY, | |
143 int x, | |
144 int y) const | |
145 { | |
146 // Take the center of the pixel | |
147 MapDisplayToScene(sceneX, sceneY, | |
148 static_cast<double>(x) + 0.5, | |
149 static_cast<double>(y) + 0.5); | |
150 } | |
151 | |
152 | |
153 void ViewportGeometry::FitContent() | |
154 { | |
155 if (width_ > 0 && | |
156 height_ > 0 && | |
157 !sceneExtent_.IsEmpty()) | |
158 { | |
159 double zoomX = static_cast<double>(width_) / (sceneExtent_.GetX2() - sceneExtent_.GetX1()); | |
160 double zoomY = static_cast<double>(height_) / (sceneExtent_.GetY2() - sceneExtent_.GetY1()); | |
161 zoom_ = zoomX < zoomY ? zoomX : zoomY; | |
162 | |
163 panX_ = 0; | |
164 panY_ = 0; | |
165 | |
166 ComputeTransform(); | |
167 } | |
168 } | |
169 | |
170 | |
171 void ViewportGeometry::ApplyTransform(OrthancStone::CairoContext& context) const | |
172 { | |
173 cairo_set_matrix(context.GetObject(), &transform_); | |
174 } | |
175 | |
176 | |
177 void ViewportGeometry::GetPan(double& x, | |
178 double& y) const | |
179 { | |
180 x = panX_; | |
181 y = panY_; | |
182 } | |
183 | |
184 | |
185 void ViewportGeometry::SetPan(double x, | |
186 double y) | |
187 { | |
188 panX_ = x; | |
189 panY_ = y; | |
190 ComputeTransform(); | |
191 } | |
192 | |
193 | |
194 void ViewportGeometry::SetZoom(double zoom) | |
195 { | |
196 zoom_ = zoom; | |
197 ComputeTransform(); | |
198 } | |
199 | |
200 | |
201 OrthancStone::Matrix ViewportGeometry::GetMatrix() const | |
202 { | |
203 OrthancStone::Matrix m(3, 3); | |
204 | |
205 m(0, 0) = transform_.xx; | |
206 m(0, 1) = transform_.xy; | |
207 m(0, 2) = transform_.x0; | |
208 m(1, 0) = transform_.yx; | |
209 m(1, 1) = transform_.yy; | |
210 m(1, 2) = transform_.y0; | |
211 m(2, 0) = 0; | |
212 m(2, 1) = 0; | |
213 m(2, 2) = 1; | |
214 | |
215 return m; | |
216 } | |
217 } |