cxEraserWidget.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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#include <cxEraserWidget.h>

#include <QTimer>
#include <QCheckBox>

#include "vtkSphereWidget.h"
#include "vtkSplineWidget.h"
#include "vtkSplineWidget2.h"
#include "vtkSplineRepresentation.h"
#include "vtkRenderWindow.h"
#include <vtkSphere.h>
#include <vtkClipPolyData.h>
#include <vtkImageData.h>

#include "cxMesh.h"
#include "cxStringPropertyBase.h"
#include "cxLabeledComboBoxWidget.h"
#include "cxDefinitionStrings.h"
#include "cxUtilHelpers.h"

#include "cxRegistrationTransform.h"
#include "cxImageAlgorithms.h"
#include "cxDoubleWidgets.h"
#include "cxImage.h"
#include "cxVolumeHelpers.h"
#include "cxPatientModelService.h"
#include "cxViewService.h"
#include "cxViewGroupData.h"

namespace cx
{

EraserWidget::EraserWidget(QWidget* parent) :
        BaseWidget(parent, "EraserWidget", "Eraser"),
        mPreviousCenter(0,0,0),
        mPreviousRadius(0)
{

        QVBoxLayout* layout = new QVBoxLayout(this);

        mContinousEraseTimer = new QTimer(this);
        connect(mContinousEraseTimer, SIGNAL(timeout()), this, SLOT(continousRemoveSlot())); // this signal will be executed in the thread of THIS, i.e. the main thread.

//      this->setToolTip(this->defaultWhatsThis());

//      layout->addWidget(new QLabel(QString("<font size=4 color=red><b>%1</b></font><br>Erase parts of active volume using a sphere.").arg("Experimental Widget!!")));
//      layout->addStretch();

        QHBoxLayout* buttonLayout = new QHBoxLayout;
        layout->addLayout(buttonLayout);
        QHBoxLayout* buttonLayout2 = new QHBoxLayout;
        layout->addLayout(buttonLayout2);

        mShowEraserCheckBox = new QCheckBox("Show");
        mShowEraserCheckBox->setToolTip("Show eraser sphere in the views.");
        connect(mShowEraserCheckBox, SIGNAL(toggled(bool)), this, SLOT(toggleShowEraser(bool)));
        buttonLayout->addWidget(mShowEraserCheckBox);

        mContinousEraseCheckBox = new QCheckBox("Continous");
        mContinousEraseCheckBox->setToolTip("Erase continously using the sphere. (might be slow)");
        connect(mContinousEraseCheckBox, SIGNAL(toggled(bool)), this, SLOT(toggleContinous(bool)));
        buttonLayout2->addWidget(mContinousEraseCheckBox);

        mDuplicateAction = this->createAction(this, QIcon(), "Duplicate", "Duplicate active volume - do this before erasing!",
                SLOT(duplicateSlot()), buttonLayout);

        mSaveAction = this->createAction(this, QIcon(), "Save", "Save modified image to disk",
                SLOT(saveSlot()), buttonLayout);

        mRemoveAction = this->createAction(this, QIcon(), "Erase", "Erase everything inside sphere",
                SLOT(removeSlot()), buttonLayout2);


        double sphereRadius = 10;
        mSphereSizeAdapter = DoubleProperty::initialize("SphereSize", "Sphere Size", "Radius of Eraser Sphere", sphereRadius, DoubleRange(1,200,1), 0, QDomNode());
        connect(mSphereSizeAdapter.get(), SIGNAL(changed()), this, SLOT(sphereSizeChangedSlot()));
        mSphereSize = new SpinBoxAndSliderGroupWidget(this, mSphereSizeAdapter);
        layout->addWidget(mSphereSize);

        layout->addStretch();

        this->enableButtons();
}

void EraserWidget::enableButtons()
{
        bool e = mShowEraserCheckBox->isChecked();

        mContinousEraseCheckBox->setEnabled(e);
//      mDuplicateAction->setEnabled(e);
//      mSaveAction->setEnabled(e);
        mRemoveAction->setEnabled(e);
        mSphereSize->setEnabled(e);
}

EraserWidget::~EraserWidget()
{
}

QString EraserWidget::defaultWhatsThis() const
{
        return "<html>"
                "<h3>Functionality for erasing parts of volumes/meshes.</h3>"
                "<p>"
                "</p>"
                "<p><i></i></p>"
                "</html>";
}

void EraserWidget::toggleContinous(bool on)
{
        if (on)
        {
                mContinousEraseTimer->start(300);
        }
        else
        {
                mContinousEraseTimer->stop();
        }
}

void EraserWidget::continousRemoveSlot()
{
        Transform3D rMd = viewService()->getGroup(0)->getOptions().mPickerGlyph->get_rMd();
        //Transform3D rMd = viewService()->getViewGroupDatas().front()->getData()->getOptions().mPickerGlyph->get_rMd();
        Vector3D c(mSphere->GetCenter());
        c = rMd.coord(c);
        double r = mSphere->GetRadius();

        // optimization: dont remove if idle
        if (similar(mPreviousCenter, c) && similar(mPreviousRadius, r))
                return;

        this->removeSlot();
}

void EraserWidget::duplicateSlot()
{
        ImagePtr original = patientService()->getActiveImage();

        ImagePtr duplicate = duplicateImage(patientService(), original);
        patientService()->insertData(duplicate);
        patientService()->setActiveImage(duplicate);

        // replace viz of original with duplicate
//      std::vector<ViewGroupPtr> viewGroups = viewService()->getViewGroupDatas();
        for (unsigned i = 0; i < viewService()->groupCount(); ++i)
        {
                if (viewService()->getGroup(i)->removeData(original->getUid()))
                        viewService()->getGroup(i)->addData(duplicate->getUid());
        }
}

void EraserWidget::sphereSizeChangedSlot()
{
        if (mSphere)
        {
                mSphere->SetRadius(mSphereSizeAdapter->getValue());
                mSphere->Update();
        }
}

void EraserWidget::saveSlot()
{
        patientService()->insertData(patientService()->getActiveImage());
}


template <class TYPE>
void EraserWidget::eraseVolume(TYPE* volumePointer, TYPE replaceVal)
{
        ImagePtr image = patientService()->getActiveImage();
        vtkImageDataPtr img = image->getBaseVtkImageData();

        Eigen::Array3i dim(img->GetDimensions());
        Vector3D spacing(img->GetSpacing());

        Transform3D rMd = viewService()->getGroup(0)->getOptions().mPickerGlyph->get_rMd();
        Vector3D c(mSphere->GetCenter());
        c = rMd.coord(c);
        double r = mSphere->GetRadius();
        mPreviousCenter = c;
        mPreviousRadius = r;

        DoubleBoundingBox3D bb_r(c[0]-r, c[0]+r, c[1]-r, c[1]+r, c[2]-r, c[2]+r);

        Transform3D dMr = image->get_rMd().inv();
        Transform3D rawMd = createTransformScale(spacing).inv();
        Transform3D rawMr = rawMd * dMr;
        Vector3D c_d = dMr.coord(c);
        double r_d = dMr.vector(r * Vector3D::UnitX()).length();
        c = rawMr.coord(c);
        r = rawMr.vector(r * Vector3D::UnitX()).length();
        DoubleBoundingBox3D bb0_raw = transform(rawMr, bb_r);
        IntBoundingBox3D bb1_raw(0, dim[0], 0, dim[1], 0, dim[2]);

//      std::cout << "     sphere: " << bb0_raw << std::endl;
//      std::cout << "        raw: " << bb1_raw << std::endl;

        for (int i=0; i<3; ++i)
        {
                bb1_raw[2*i] = std::max<double>(bb1_raw[2*i], bb0_raw[2*i]);
                bb1_raw[2*i+1] = std::min<double>(bb1_raw[2*i+1], bb0_raw[2*i+1]);
        }

        for (int x = bb1_raw[0]; x < bb1_raw[1]; ++x)
                for (int y = bb1_raw[2]; y < bb1_raw[3]; ++y)
                        for (int z = bb1_raw[4]; z < bb1_raw[5]; ++z)
                        {
                                int index = x + y * dim[0] + z * dim[0] * dim[1];
                                if ((Vector3D(x*spacing[0], y*spacing[1], z*spacing[2]) - c_d).length() < r_d)
                                        volumePointer[index] = replaceVal;
                        }
}

//#define VTK_VOID            0
//#define VTK_BIT             1
//#define VTK_CHAR            2
//#define VTK_SIGNED_CHAR    15
//#define VTK_UNSIGNED_CHAR   3
//#define VTK_SHORT           4
//#define VTK_UNSIGNED_SHORT  5
//#define VTK_INT             6
//#define VTK_UNSIGNED_INT    7
//#define VTK_LONG            8
//#define VTK_UNSIGNED_LONG   9
//#define VTK_FLOAT          10
//#define VTK_DOUBLE         11
//#define VTK_ID_TYPE        12

void EraserWidget::removeSlot()
{
        if (!mSphere)
                return;

        ImagePtr image = patientService()->getActiveImage();
        vtkImageDataPtr img = image->getBaseVtkImageData();

        if (img->GetScalarType()==VTK_CHAR)
                this->eraseVolume(static_cast<char*> (img->GetScalarPointer()), VTK_CHAR_MIN);
        if (img->GetScalarType()==VTK_UNSIGNED_CHAR)
                this->eraseVolume(static_cast<unsigned char*> (img->GetScalarPointer()), VTK_UNSIGNED_CHAR_MIN);
        if (img->GetScalarType()==VTK_UNSIGNED_SHORT)
                this->eraseVolume(static_cast<unsigned short*> (img->GetScalarPointer()), VTK_UNSIGNED_SHORT_MIN);
        if (img->GetScalarType()==VTK_SHORT)
                this->eraseVolume(static_cast<short*> (img->GetScalarPointer()), VTK_SHORT_MIN);
        if (img->GetScalarType()==VTK_UNSIGNED_INT)
                this->eraseVolume(static_cast<unsigned int*> (img->GetScalarPointer()), VTK_UNSIGNED_INT_MIN);
        if (img->GetScalarType()==VTK_INT)
                this->eraseVolume(static_cast<int*> (img->GetScalarPointer()), VTK_INT_MIN);

        ImageLUT2DPtr tf2D = image->getLookupTable2D();
        ImageTF3DPtr tf3D = image->getTransferFunctions3D();

//      img->Modified();
        setDeepModified(img);
        image->setVtkImageData(img);

        // keep existing transfer functions
        image->setLookupTable2D(tf2D);
        image->setTransferFunctions3D(tf3D);
}

void EraserWidget::toggleShowEraser(bool on)
{
        if (on)
        {
//              std::vector<ViewGroupPtr> viewGroups = viewService()->getViewGroups();
                mSphere = vtkSphereSourcePtr::New();

                mSphere->SetRadius(40);
                mSphere->SetThetaResolution(16);
                mSphere->SetPhiResolution(12);
                mSphere->LatLongTessellationOn(); // more natural wireframe view

                double a = mSphereSizeAdapter->getValue();
                mSphere->SetRadius(a);
                mSphere->Update();
                MeshPtr glyph = viewService()->getGroup(0)->getOptions().mPickerGlyph;
                glyph->setVtkPolyData(mSphere->GetOutput());
                glyph->setColor(QColor(255, 204, 0)); // same as tool
                glyph->setIsWireframe(true);

                // set same glyph in all groups
                for (unsigned i=0; i<viewService()->groupCount(); ++i)
                {
                        ViewGroupData::Options options = viewService()->getGroup(i)->getOptions();
                        options.mPickerGlyph = glyph;
                        viewService()->getGroup(i)->setOptions(options);
                }
        }
        else
        {
                viewService()->getGroup(0)->getOptions().mPickerGlyph->setVtkPolyData(NULL);
                mContinousEraseCheckBox->setChecked(false);
        }

        this->enableButtons();
}

}