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comparison Framework/Radiography/RadiographyWindowingTracker.cpp @ 415:c0589c3173fd

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finished reorganization
author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 13 Nov 2018 10:36:53 +0100
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children b70e9be013e4
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414:f7616c010056 415:c0589c3173fd
1 /**
2 * Stone of Orthanc
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
4 * Department, University Hospital of Liege, Belgium
5 * Copyright (C) 2017-2018 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 "RadiographyWindowingTracker.h"
23
24 #include <Core/OrthancException.h>
25
26
27 namespace OrthancStone
28 {
29 class RadiographyWindowingTracker::UndoRedoCommand : public UndoRedoStack::ICommand
30 {
31 private:
32 RadiographyScene& scene_;
33 float sourceCenter_;
34 float sourceWidth_;
35 float targetCenter_;
36 float targetWidth_;
37
38 public:
39 UndoRedoCommand(const RadiographyWindowingTracker& tracker) :
40 scene_(tracker.scene_),
41 sourceCenter_(tracker.sourceCenter_),
42 sourceWidth_(tracker.sourceWidth_)
43 {
44 scene_.GetWindowingWithDefault(targetCenter_, targetWidth_);
45 }
46
47 virtual void Undo() const
48 {
49 scene_.SetWindowing(sourceCenter_, sourceWidth_);
50 }
51
52 virtual void Redo() const
53 {
54 scene_.SetWindowing(targetCenter_, targetWidth_);
55 }
56 };
57
58
59 void RadiographyWindowingTracker::ComputeAxisEffect(int& deltaCenter,
60 int& deltaWidth,
61 int delta,
62 Action actionNegative,
63 Action actionPositive)
64 {
65 if (delta < 0)
66 {
67 switch (actionNegative)
68 {
69 case Action_IncreaseWidth:
70 deltaWidth = -delta;
71 break;
72
73 case Action_DecreaseWidth:
74 deltaWidth = delta;
75 break;
76
77 case Action_IncreaseCenter:
78 deltaCenter = -delta;
79 break;
80
81 case Action_DecreaseCenter:
82 deltaCenter = delta;
83 break;
84
85 default:
86 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
87 }
88 }
89 else if (delta > 0)
90 {
91 switch (actionPositive)
92 {
93 case Action_IncreaseWidth:
94 deltaWidth = delta;
95 break;
96
97 case Action_DecreaseWidth:
98 deltaWidth = -delta;
99 break;
100
101 case Action_IncreaseCenter:
102 deltaCenter = delta;
103 break;
104
105 case Action_DecreaseCenter:
106 deltaCenter = -delta;
107 break;
108
109 default:
110 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
111 }
112 }
113 }
114
115
116 RadiographyWindowingTracker::RadiographyWindowingTracker(UndoRedoStack& undoRedoStack,
117 RadiographyScene& scene,
118 int x,
119 int y,
120 Action leftAction,
121 Action rightAction,
122 Action upAction,
123 Action downAction) :
124 undoRedoStack_(undoRedoStack),
125 scene_(scene),
126 clickX_(x),
127 clickY_(y),
128 leftAction_(leftAction),
129 rightAction_(rightAction),
130 upAction_(upAction),
131 downAction_(downAction)
132 {
133 scene_.GetWindowingWithDefault(sourceCenter_, sourceWidth_);
134
135 float minValue, maxValue;
136 scene.GetRange(minValue, maxValue);
137
138 assert(minValue <= maxValue);
139
140 float tmp;
141
142 float delta = (maxValue - minValue);
143 if (delta <= 1)
144 {
145 tmp = 0;
146 }
147 else
148 {
149 // NB: Visual Studio 2008 does not provide "log2f()", so we
150 // implement it by ourselves
151 tmp = logf(delta) / logf(2.0f);
152 }
153
154 strength_ = tmp - 7;
155 if (strength_ < 1)
156 {
157 strength_ = 1;
158 }
159 }
160
161
162 void RadiographyWindowingTracker::Render(CairoContext& context,
163 double zoom)
164 {
165 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
166 }
167
168
169 void RadiographyWindowingTracker::MouseUp()
170 {
171 undoRedoStack_.Add(new UndoRedoCommand(*this));
172 }
173
174
175 void RadiographyWindowingTracker::MouseMove(int displayX,
176 int displayY,
177 double sceneX,
178 double sceneY)
179 {
180 // This follows the behavior of the Osimis Web viewer:
181 // https://bitbucket.org/osimis/osimis-webviewer-plugin/src/master/frontend/src/app/viewport/image-plugins/windowing-viewport-tool.class.js
182
183 static const float SCALE = 1.0;
184
185 int deltaCenter = 0;
186 int deltaWidth = 0;
187
188 ComputeAxisEffect(deltaCenter, deltaWidth, displayX - clickX_, leftAction_, rightAction_);
189 ComputeAxisEffect(deltaCenter, deltaWidth, displayY - clickY_, upAction_, downAction_);
190
191 float newCenter = sourceCenter_ + (deltaCenter / SCALE * strength_);
192 float newWidth = sourceWidth_ + (deltaWidth / SCALE * strength_);
193 scene_.SetWindowing(newCenter, newWidth);
194 }
195 }