cxImageMapperMonitor.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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modification, are permitted provided that the following conditions are met:

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   this list of conditions and the following disclaimer.

2. Redistributions in binary form must reproduce the above copyright notice, 
   this list of conditions and the following disclaimer in the documentation 
   and/or other materials provided with the distribution.

3. Neither the name of the copyright holder nor the names of its contributors 
   may be used to endorse or promote products derived from this software 
   without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
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=========================================================================*/

#include "cxImageMapperMonitor.h"

#include <vector>
#include <vtkPlane.h>
#include <vtkVolume.h>
#include <vtkAbstractVolumeMapper.h>
#include <vtkPlaneCollection.h>
#include <vtkVolumeMapper.h>

#include "cxImage.h"


namespace cx
{

ImageMapperMonitorPtr ImageMapperMonitor::create(vtkVolumePtr volume, ImagePtr image)
{
        ImageMapperMonitorPtr retval(new ImageMapperMonitor(volume, image));
        retval->init(); // contains virtual functions
        return retval;
}

ImageMapperMonitor::ImageMapperMonitor(vtkVolumePtr volume, ImagePtr image) : mVolume(volume), mImage(image)
{
        if (!mImage)
                return;
        connect(mImage.get(), &Data::clipPlanesChanged, this, &ImageMapperMonitor::clipPlanesChangedSlot);
        connect(mImage.get(), &Image::cropBoxChanged, this, &ImageMapperMonitor::applyCropping);
}

void ImageMapperMonitor::init()
{
        this->applyClipping();
        this->applyCropping();
}

ImageMapperMonitor::~ImageMapperMonitor()
{
        this->clearClipping();
}

void ImageMapperMonitor::clipPlanesChangedSlot()
{
        this->applyClipping();
}

void ImageMapperMonitor::clearClipping()
{
        if (!mImage)
                return;

        for (unsigned i=0; i<mPlanes.size(); ++i)
        {
                mVolume->GetMapper()->RemoveClippingPlane(mPlanes[i]);
        }
        mPlanes.clear();
}

void ImageMapperMonitor::applyClipping()
{
        this->clearClipping();

        if (!mImage)
                return;

        mPlanes = mImage->getAllClipPlanes();
        for (unsigned i=0; i<mPlanes.size(); ++i)
        {
                mVolume->GetMapper()->AddClippingPlane(mPlanes[i]);
        }
}

vtkVolumeMapperPtr ImageMapperMonitor::getMapper()
{
        vtkVolumeMapperPtr mapper = dynamic_cast<vtkVolumeMapper*>(mVolume->GetMapper());
        return mapper;
}

void ImageMapperMonitor::applyCropping()
{
        if (!mImage)
                return;

        vtkVolumeMapperPtr mapper = this->getMapper();
        if (!mapper)
                return;
        mapper->SetCropping(mImage->getCropping());

        DoubleBoundingBox3D bb_d = mImage->getCroppingBox();

        mapper->SetCroppingRegionPlanes(bb_d.begin());
        mapper->Update();
}

} // namespace cx