cxFrame3D.cpp

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/*=========================================================================
This file is part of CustusX, an Image Guided Therapy Application.

Copyright (c) 2008-2014, SINTEF Department of Medical Technology
All rights reserved.

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   this list of conditions and the following disclaimer.

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   may be used to endorse or promote products derived from this software 
   without specific prior written permission.

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#include "cxFrame3D.h"
#include <math.h>
#include "cxUtilHelpers.h"

namespace cx
{

DecomposedTransform3D::DecomposedTransform3D()
{
        m_R = Transform3D::Identity();
        mAngle = Vector3D(0, 0, 0);
        mPos = Vector3D(0, 0, 0);
}

DecomposedTransform3D::DecomposedTransform3D(Transform3D m)
{
        Frame3D frame = Frame3D::create(m);
        mAngle = frame.getEulerXYZ();
        mPos = frame.mPos;
        frame.mPos = Vector3D(0, 0, 0);
        m_R = frame.transform();
}

void DecomposedTransform3D::reset(Transform3D m)
{
        DecomposedTransform3D input(m);

        bool eqPos = similar(input.mPos, mPos);
        if (!eqPos)
        {
                mPos = input.mPos;
        }

        input.mPos = mPos;
        bool eqRot = similar(input.getMatrix(), this->getMatrix());
        // only reset angles if the input rotation matrix is different from the current.
        if (!eqRot)
        {
                mAngle = input.mAngle;
                m_R = input.m_R;
        }
}

void DecomposedTransform3D::setAngles(Vector3D xyz)
{
        //  std::cout << "setAngles " << xyz << std::endl;

        if (!similar(xyz[0], mAngle[0]))
        {
                m_R = m_R * createTransformRotateX(xyz[0] - mAngle[0]);
                mAngle[0] = xyz[0];
        }
        if (!similar(xyz[1], mAngle[1]))
        {
                m_R = m_R * createTransformRotateY(xyz[1] - mAngle[1]);
                mAngle[1] = xyz[1];
        }
        if (!similar(xyz[2], mAngle[2]))
        {
                m_R = m_R * createTransformRotateZ(xyz[2] - mAngle[2]);
                mAngle[2] = xyz[2];
        }
}

void DecomposedTransform3D::setPosition(Vector3D pos)
{
        //  std::cout << "setPosition " << pos << std::endl;
        mPos = pos;
}

Vector3D DecomposedTransform3D::getAngles() const
{
        return mAngle;
}

Vector3D DecomposedTransform3D::getPosition() const
{
        return mPos;
}

Transform3D DecomposedTransform3D::getMatrix() const
{
        return createTransformTranslate(mPos) * m_R;
}

//---------------------------------------------------------
//---------------------------------------------------------
//---------------------------------------------------------

Frame3D::Frame3D()
{
        mAngleAxis = Eigen::AngleAxisd::Identity();
        mPos = Vector3D(0, 0, 0);
}

Frame3D::~Frame3D()
{
}

Vector3D Frame3D::getEulerXYZ() const
{
        Transform3D t;
        t = mAngleAxis;
        Vector3D ea = t.matrix().block<3, 3> (0, 0).eulerAngles(0, 1, 2);
        return ea;
}

void Frame3D::setEulerXYZ(const Vector3D& xyz)
{
        mAngleAxis = Eigen::AngleAxisd(xyz[0], Vector3D::UnitX()) * Eigen::AngleAxisd(xyz[1], Vector3D::UnitY())
                * Eigen::AngleAxisd(xyz[2], Vector3D::UnitZ());
}

Frame3D Frame3D::create(const Transform3D& T)
{
        Frame3D retval;

        Eigen::Matrix3d R = T.matrix().block<3, 3> (0, 0); // extract rotational part
        retval.mAngleAxis = Eigen::AngleAxisd(R); // construct angle axis from R
        retval.mPos = T.matrix().block<3, 1> (0, 3); // extract translational part

        return retval;
}
//---------------------------------------------------------------------------

Transform3D Frame3D::transform() const
{
        return createTransformTranslate(mPos) * mAngleAxis;
}

Vector3D Frame3D::rotationAxis() const
{
        return mAngleAxis.axis();
}

void Frame3D::setRotationAxis(const Vector3D& k)
{
        mAngleAxis = Eigen::AngleAxisd(mAngleAxis.angle(), k);
        mAngleAxis = Eigen::AngleAxisd(mAngleAxis.angle(), k);
}

std::ostream& operator<<(std::ostream& s, const Frame3D& t)
{
        t.put(s);
        return s;
}

void Frame3D::put(std::ostream& s) const
{
        s << "ThetaXY=" << getThetaXY(mAngleAxis.axis()) / M_PI * 180 << ", ThetaZ=" << getThetaZ(mAngleAxis.axis()) / M_PI
                * 180 << ", Phi=" << mAngleAxis.angle() / M_PI * 180 << ", Pos=[" << mPos << "]";
}

boost::array<double, 6> Frame3D::getCompactAxisAngleRep() const
{
        boost::array<double, 6> retval;
        retval[0] = getThetaXY(mAngleAxis.axis());
        retval[1] = getThetaZ(mAngleAxis.axis());
        retval[2] = mAngleAxis.angle();
        retval[3] = mPos[0];
        retval[4] = mPos[1];
        retval[5] = mPos[2];
        return retval;
}

Frame3D Frame3D::fromCompactAxisAngleRep(const boost::array<double, 6>& rep)
{
        Frame3D retval;

        retval.mAngleAxis = Eigen::AngleAxisd(rep[2], unitVector(rep[0], rep[1]));
        retval.mPos = Vector3D(rep[3], rep[4], rep[5]);

        return retval;
}

} // namespace cx
// --------------------------------------------------------