Mercurial > hg > orthanc-stone
diff Framework/Radiography/RadiographyWindowingTracker.cpp @ 415:c0589c3173fd
finished reorganization
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Tue, 13 Nov 2018 10:36:53 +0100 |
parents | |
children | b70e9be013e4 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Framework/Radiography/RadiographyWindowingTracker.cpp Tue Nov 13 10:36:53 2018 +0100 @@ -0,0 +1,195 @@ +/** + * Stone of Orthanc + * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics + * Department, University Hospital of Liege, Belgium + * Copyright (C) 2017-2018 Osimis S.A., Belgium + * + * This program is free software: you can redistribute it and/or + * modify it under the terms of the GNU Affero General Public License + * as published by the Free Software Foundation, either version 3 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + **/ + + +#include "RadiographyWindowingTracker.h" + +#include <Core/OrthancException.h> + + +namespace OrthancStone +{ + class RadiographyWindowingTracker::UndoRedoCommand : public UndoRedoStack::ICommand + { + private: + RadiographyScene& scene_; + float sourceCenter_; + float sourceWidth_; + float targetCenter_; + float targetWidth_; + + public: + UndoRedoCommand(const RadiographyWindowingTracker& tracker) : + scene_(tracker.scene_), + sourceCenter_(tracker.sourceCenter_), + sourceWidth_(tracker.sourceWidth_) + { + scene_.GetWindowingWithDefault(targetCenter_, targetWidth_); + } + + virtual void Undo() const + { + scene_.SetWindowing(sourceCenter_, sourceWidth_); + } + + virtual void Redo() const + { + scene_.SetWindowing(targetCenter_, targetWidth_); + } + }; + + + void RadiographyWindowingTracker::ComputeAxisEffect(int& deltaCenter, + int& deltaWidth, + int delta, + Action actionNegative, + Action actionPositive) + { + if (delta < 0) + { + switch (actionNegative) + { + case Action_IncreaseWidth: + deltaWidth = -delta; + break; + + case Action_DecreaseWidth: + deltaWidth = delta; + break; + + case Action_IncreaseCenter: + deltaCenter = -delta; + break; + + case Action_DecreaseCenter: + deltaCenter = delta; + break; + + default: + throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); + } + } + else if (delta > 0) + { + switch (actionPositive) + { + case Action_IncreaseWidth: + deltaWidth = delta; + break; + + case Action_DecreaseWidth: + deltaWidth = -delta; + break; + + case Action_IncreaseCenter: + deltaCenter = delta; + break; + + case Action_DecreaseCenter: + deltaCenter = -delta; + break; + + default: + throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); + } + } + } + + + RadiographyWindowingTracker::RadiographyWindowingTracker(UndoRedoStack& undoRedoStack, + RadiographyScene& scene, + int x, + int y, + Action leftAction, + Action rightAction, + Action upAction, + Action downAction) : + undoRedoStack_(undoRedoStack), + scene_(scene), + clickX_(x), + clickY_(y), + leftAction_(leftAction), + rightAction_(rightAction), + upAction_(upAction), + downAction_(downAction) + { + scene_.GetWindowingWithDefault(sourceCenter_, sourceWidth_); + + float minValue, maxValue; + scene.GetRange(minValue, maxValue); + + assert(minValue <= maxValue); + + float tmp; + + float delta = (maxValue - minValue); + if (delta <= 1) + { + tmp = 0; + } + else + { + // NB: Visual Studio 2008 does not provide "log2f()", so we + // implement it by ourselves + tmp = logf(delta) / logf(2.0f); + } + + strength_ = tmp - 7; + if (strength_ < 1) + { + strength_ = 1; + } + } + + + void RadiographyWindowingTracker::Render(CairoContext& context, + double zoom) + { + throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); + } + + + void RadiographyWindowingTracker::MouseUp() + { + undoRedoStack_.Add(new UndoRedoCommand(*this)); + } + + + void RadiographyWindowingTracker::MouseMove(int displayX, + int displayY, + double sceneX, + double sceneY) + { + // This follows the behavior of the Osimis Web viewer: + // https://bitbucket.org/osimis/osimis-webviewer-plugin/src/master/frontend/src/app/viewport/image-plugins/windowing-viewport-tool.class.js + + static const float SCALE = 1.0; + + int deltaCenter = 0; + int deltaWidth = 0; + + ComputeAxisEffect(deltaCenter, deltaWidth, displayX - clickX_, leftAction_, rightAction_); + ComputeAxisEffect(deltaCenter, deltaWidth, displayY - clickY_, upAction_, downAction_); + + float newCenter = sourceCenter_ + (deltaCenter / SCALE * strength_); + float newWidth = sourceWidth_ + (deltaWidth / SCALE * strength_); + scene_.SetWindowing(newCenter, newWidth); + } +}