Mercurial > hg > orthanc-stone
diff Framework/Toolbox/CoordinateSystem3D.cpp @ 110:53025eecbc95 wasm
renamed SliceGeometry as CoordinateSystem3D
author | Sebastien Jodogne <s.jodogne@gmail.com> |
---|---|
date | Wed, 14 Jun 2017 15:50:38 +0200 |
parents | Framework/Toolbox/SliceGeometry.cpp@f244018a4e4b |
children | 2eca030792aa |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Framework/Toolbox/CoordinateSystem3D.cpp Wed Jun 14 15:50:38 2017 +0200 @@ -0,0 +1,155 @@ +/** + * Stone of Orthanc + * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics + * Department, University Hospital of Liege, Belgium + * Copyright (C) 2017 Osimis, 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 "CoordinateSystem3D.h" + +#include "GeometryToolbox.h" + +#include "../../Resources/Orthanc/Core/Logging.h" +#include "../../Resources/Orthanc/Core/Toolbox.h" +#include "../../Resources/Orthanc/Core/OrthancException.h" + +namespace OrthancStone +{ + void CoordinateSystem3D::CheckAndComputeNormal() + { + // DICOM expects normal vectors to define the axes: "The row and + // column direction cosine vectors shall be normal, i.e., the dot + // product of each direction cosine vector with itself shall be + // unity." + // http://dicom.nema.org/medical/dicom/current/output/chtml/part03/sect_C.7.6.2.html + if (!GeometryToolbox::IsNear(boost::numeric::ublas::norm_2(axisX_), 1.0) || + !GeometryToolbox::IsNear(boost::numeric::ublas::norm_2(axisY_), 1.0)) + { + throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); + } + + // The vectors within "Image Orientation Patient" must be + // orthogonal, according to the DICOM specification: "The row and + // column direction cosine vectors shall be orthogonal, i.e., + // their dot product shall be zero." + // http://dicom.nema.org/medical/dicom/current/output/chtml/part03/sect_C.7.6.2.html + if (!GeometryToolbox::IsCloseToZero(boost::numeric::ublas::inner_prod(axisX_, axisY_))) + { + throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); + } + + GeometryToolbox::CrossProduct(normal_, axisX_, axisY_); + + // Just a sanity check, it should be useless by construction + assert(GeometryToolbox::IsNear(boost::numeric::ublas::norm_2(normal_), 1.0)); + } + + + void CoordinateSystem3D::SetupCanonical() + { + GeometryToolbox::AssignVector(origin_, 0, 0, 0); + GeometryToolbox::AssignVector(axisX_, 1, 0, 0); + GeometryToolbox::AssignVector(axisY_, 0, 1, 0); + CheckAndComputeNormal(); + } + + + CoordinateSystem3D::CoordinateSystem3D(const Vector& origin, + const Vector& axisX, + const Vector& axisY) : + origin_(origin), + axisX_(axisX), + axisY_(axisY) + { + CheckAndComputeNormal(); + } + + + void CoordinateSystem3D::Setup(const std::string& imagePositionPatient, + const std::string& imageOrientationPatient) + { + std::string tmpPosition = Orthanc::Toolbox::StripSpaces(imagePositionPatient); + std::string tmpOrientation = Orthanc::Toolbox::StripSpaces(imageOrientationPatient); + + Vector orientation; + if (!GeometryToolbox::ParseVector(origin_, tmpPosition) || + !GeometryToolbox::ParseVector(orientation, tmpOrientation) || + origin_.size() != 3 || + orientation.size() != 6) + { + throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); + } + + axisX_.resize(3); + axisX_[0] = orientation[0]; + axisX_[1] = orientation[1]; + axisX_[2] = orientation[2]; + + axisY_.resize(3); + axisY_[0] = orientation[3]; + axisY_[1] = orientation[4]; + axisY_[2] = orientation[5]; + + CheckAndComputeNormal(); + } + + + CoordinateSystem3D::CoordinateSystem3D(const OrthancPlugins::IDicomDataset& dicom) + { + std::string a, b; + + if (dicom.GetStringValue(a, OrthancPlugins::DICOM_TAG_IMAGE_POSITION_PATIENT) && + dicom.GetStringValue(b, OrthancPlugins::DICOM_TAG_IMAGE_ORIENTATION_PATIENT)) + { + Setup(a, b); + } + else + { + SetupCanonical(); + } + } + + + Vector CoordinateSystem3D::MapSliceToWorldCoordinates(double x, + double y) const + { + return origin_ + x * axisX_ + y * axisY_; + } + + + double CoordinateSystem3D::ProjectAlongNormal(const Vector& point) const + { + return boost::numeric::ublas::inner_prod(point, normal_); + } + + + void CoordinateSystem3D::ProjectPoint(double& offsetX, + double& offsetY, + const Vector& point) const + { + // Project the point onto the slice + Vector projection; + GeometryToolbox::ProjectPointOntoPlane(projection, point, normal_, origin_); + + // As the axes are orthonormal vectors thanks to + // CheckAndComputeNormal(), the following dot products give the + // offset of the origin of the slice wrt. the origin of the + // reference plane https://en.wikipedia.org/wiki/Vector_projection + offsetX = boost::numeric::ublas::inner_prod(axisX_, projection - origin_); + offsetY = boost::numeric::ublas::inner_prod(axisY_, projection - origin_); + } +}