cxVBcameraPath.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 <iostream>
#include "vtkForwardDeclarations.h"
#include "vtkPolyData.h"
#include "vtkCardinalSpline.h"
#include "vtkPoints.h"
#include "vtkCellArray.h"
#include "vtkCamera.h"
#include "vtkParametricSpline.h"
#include "vtkSpline.h"

#include "cxVBcameraPath.h"
#include "cxMesh.h"
#include "cxTrackingService.h"
#include "cxPatientModelService.h"
#include "cxViewServiceProxy.h"
#include "cxView.h"

namespace cx {

CXVBcameraPath::CXVBcameraPath(TrackingServicePtr tracker, PatientModelServicePtr patientModel, ViewServicePtr visualization)
  :     mTrackingService(tracker)
  , mPatientModelService(patientModel)
  , mViewService(visualization)
  , mLastCameraViewAngle(0)
  , mLastCameraRotAngle(0)
{
        mManualTool = mTrackingService->getManualTool();
    mSpline = vtkParametricSplinePtr::New();
    mLastStoredViewVector.Identity();

}

void CXVBcameraPath::cameraRawPointsSlot(MeshPtr mesh)
{

        if(!mesh)
        {
                std::cout << "cameraRawPointsSlot is empty !" << std::endl;
                return;
        }

    this->generateSplineCurve(mesh);

}

void CXVBcameraPath::generateSplineCurve(MeshPtr mesh)
{
        vtkPolyDataPtr  polyDataInput = mesh->getTransformedPolyDataCopy(mesh->get_rMd());
        vtkPoints               *vtkpoints = polyDataInput->GetPoints();

        mNumberOfInputPoints = polyDataInput->GetNumberOfPoints();

    mNumberOfControlPoints = mNumberOfInputPoints;

        // Setting the spline curve points
        // First clean up previous stored data
    mSpline->GetXSpline()->RemoveAllPoints();
    mSpline->GetYSpline()->RemoveAllPoints();
    mSpline->GetZSpline()->RemoveAllPoints();

    mSpline->SetPoints(vtkpoints);
}




void CXVBcameraPath::cameraPathPositionSlot(int pos)
{

    double splineParameter = pos / 100.0;

//      std::cout << "CXVBcameraPath::cameraPathPositionSlot , pos : " << pos
//                        << ", spline parameter : " << splineParameter << std::endl;

    double pos_r[3], focus_r[3], d_r[3];
    double splineParameterArray[3];
    splineParameterArray[0] = splineParameter;
    splineParameterArray[1] = splineParameter;
    splineParameterArray[2] = splineParameter;

    mSpline->Evaluate(splineParameterArray, pos_r, d_r);
    splineParameterArray[0] = splineParameter+0.05;
    splineParameterArray[1] = splineParameter+0.05;
    splineParameterArray[2] = splineParameter+0.05;
    mSpline->Evaluate(splineParameterArray, focus_r, d_r);

    mLastCameraPos_r = Vector3D(pos_r[0], pos_r[1], pos_r[2]);
    mLastCameraFocus_r = Vector3D(focus_r[0], focus_r[1], focus_r[2]);
    this->updateManualToolPosition();

}

void CXVBcameraPath::updateManualToolPosition()
{
    Vector3D viewDirection_r;
        // New View direction
    if(similar(mLastCameraFocus_r, mLastCameraPos_r, 0.01)) {
        viewDirection_r = mLastStoredViewVector;
    } else {
        viewDirection_r = (mLastCameraFocus_r - mLastCameraPos_r).normalized();
        mLastStoredViewVector = viewDirection_r;
    }


    Vector3D xVector = Vector3D(0,1,0);
        Vector3D yVector = cross(viewDirection_r, xVector).normalized();

        // Construct tool transform
        Transform3D rMt = Transform3D::Identity();
        rMt.matrix().col(0).head(3) = xVector;
        rMt.matrix().col(1).head(3) = yVector;
        rMt.matrix().col(2).head(3) = viewDirection_r;
        rMt.matrix().col(3).head(3) = mLastCameraPos_r;

        Transform3D rotateX = createTransformRotateX(mLastCameraViewAngle);
        Transform3D rotateZ = createTransformRotateZ(mLastCameraRotAngle);

        Transform3D rMpr = mPatientModelService->get_rMpr();
    Transform3D prMt = rMpr.inv() * rMt * rotateZ * rotateX;

        mManualTool->set_prMt(prMt);

}


void CXVBcameraPath::cameraViewAngleSlot(int angle)
{
    mLastCameraViewAngle = static_cast<double>(angle) * (M_PI / 180.0);
        this->updateManualToolPosition();
}

void CXVBcameraPath::cameraRotateAngleSlot(int angle)
{
    mLastCameraRotAngle = static_cast<double>(angle) * (M_PI / 180.0);
        this->updateManualToolPosition();
}

} /* namespace cx */