cxMesh.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.

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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 "cxMesh.h"

#include <vtkCellArray.h>
#include <vtkPolyData.h>
#include <vtkPolyDataWriter.h>
#include <QDomDocument>
#include <QColor>
#include <QDir>
#include "cxTypeConversions.h"
#include "cxRegistrationTransform.h"
#include "cxBoundingBox3D.h"
#include "cxDataReaderWriter.h"

namespace cx
{

MeshPtr Mesh::create(const QString& uid, const QString& name)
{
        return MeshPtr(new Mesh(uid, name));
}

Mesh::Mesh(const QString& uid, const QString& name) :
        Data(uid, name), mVtkPolyData(vtkPolyDataPtr::New()), mWireframe(false), mBackfaceCulling(false), mFrontfaceCulling(false)
{
        mColor = QColor(255, 0, 0, 255);
        this->setAcquisitionTime(QDateTime::currentDateTime());
}
Mesh::Mesh(const QString& uid, const QString& name, const vtkPolyDataPtr& polyData) :
        Data(uid, name), mVtkPolyData(polyData), mWireframe(false), mBackfaceCulling(false), mFrontfaceCulling(false)
{
        mColor = QColor(255, 0, 0, 255);
        this->setAcquisitionTime(QDateTime::currentDateTime());
}
Mesh::~Mesh()
{
}

void Mesh::setIsWireframe(bool on)
{
        mWireframe = on;
        emit meshChanged();
}
bool Mesh::getIsWireframe() const
{
        return mWireframe;
}

bool Mesh::load(QString path)
{
        vtkPolyDataPtr raw;
        raw = DataReaderWriter().loadVtkPolyData(path);
        this->setVtkPolyData(raw);
        if(raw)
        {
                this->setName(QFileInfo(path).baseName());
                this->setFilename(path); // need path even when not set explicitly: nice for testing
        }
        return raw!=0;
}

void Mesh::setVtkPolyData(const vtkPolyDataPtr& polyData)
{
        mVtkPolyData = polyData;
        emit meshChanged();
}
vtkPolyDataPtr Mesh::getVtkPolyData() const
{
        return mVtkPolyData;
}
void Mesh::addXml(QDomNode& dataNode)
{
        Data::addXml(dataNode);
        QDomDocument doc = dataNode.ownerDocument();

        QDomNode meshNode = dataNode;

        QDomElement colorNode = doc.createElement("color");
        QDomElement subNode = doc.createElement("red");
        subNode.appendChild(doc.createTextNode(string_cast(mColor.red()).c_str()));
        colorNode.appendChild(subNode);
        subNode = doc.createElement("green");
        subNode.appendChild(doc.createTextNode(string_cast(mColor.green()).c_str()));
        colorNode.appendChild(subNode);
        subNode = doc.createElement("blue");
        subNode.appendChild(doc.createTextNode(string_cast(mColor.blue()).c_str()));
        colorNode.appendChild(subNode);
        subNode = doc.createElement("alpha");
        subNode.appendChild(doc.createTextNode(string_cast(mColor.alpha()).c_str()));
        colorNode.appendChild(subNode);
        meshNode.appendChild(colorNode);

        QDomElement cullingNode = doc.createElement("culling");
        QDomElement elem = cullingNode.toElement();
        elem.setAttribute("backfaceCulling", mBackfaceCulling);
        elem.setAttribute("frontfaceCulling", mFrontfaceCulling);
        meshNode.appendChild(cullingNode);
}

void Mesh::parseXml(QDomNode& dataNode)
{
        Data::parseXml(dataNode);

        // image node must be parsed in the data manager to create this Image object
        // Only subnodes are parsed here

        if (dataNode.isNull())
                return;

        //  QDomNode registrationHistory = dataNode.namedItem("registrationHistory");
        //  m_rMd_History->parseXml(registrationHistory);

        QDomNode colorNode = dataNode.namedItem("color");
        if (!colorNode.isNull())
        {
                int red = 255;
                int green = 255;
                int blue = 255;
                int alpha = 255;

                QDomNode node = colorNode.namedItem("red");
                if (!node.isNull())
                        red = node.toElement().text().toInt();

                node = colorNode.namedItem("green");
                if (!node.isNull())
                        green = node.toElement().text().toInt();

                node = colorNode.namedItem("blue");
                if (!node.isNull())
                        blue = node.toElement().text().toInt();

                node = colorNode.namedItem("alpha");
                if (!node.isNull())
                        alpha = node.toElement().text().toInt();

                mColor = QColor(red, green, blue, alpha);
        }

        QDomNode cullingNode = dataNode.namedItem("culling");
        if (!cullingNode.isNull())
        {
                mBackfaceCulling = cullingNode.toElement().attribute("backfaceCulling").toInt();
                mFrontfaceCulling = cullingNode.toElement().attribute("frontfaceCulling").toInt();
        }
        emit meshChanged();
}

void Mesh::setColor(const QColor& color)
{
        mColor = color;
        emit meshChanged();
}

QColor Mesh::getColor()
{
        return mColor;
}

void Mesh::setBackfaceCullingSlot(bool backfaceCulling)
{
        mBackfaceCulling = backfaceCulling;
        emit meshChanged();
}

bool Mesh::getBackfaceCulling()
{
        return mBackfaceCulling;
}

void Mesh::setFrontfaceCullingSlot(bool frontfaceCulling)
{
        mFrontfaceCulling = frontfaceCulling;
        emit meshChanged();
}

bool Mesh::getFrontfaceCulling()
{
        return mFrontfaceCulling;
}

DoubleBoundingBox3D Mesh::boundingBox() const
{
//      getVtkPolyData()->Update();
        DoubleBoundingBox3D bounds(getVtkPolyData()->GetBounds());
        return bounds;
}

vtkPolyDataPtr Mesh::getTransformedPolyData(Transform3D transform)
{
        // if transform elements exists, create a copy with entire position inside the polydata:
        if (similar(transform, Transform3D::Identity()))
                return getVtkPolyData();

//      getVtkPolyData()->Update();
        vtkPolyDataPtr poly = vtkPolyDataPtr::New();
        poly->DeepCopy(getVtkPolyData());
        vtkPointsPtr points = poly->GetPoints();

        vtkPointsPtr floatPoints = vtkPointsPtr::New();
        floatPoints->DeepCopy(points);
        floatPoints->SetDataTypeToFloat();
        for (int i = 0; i < poly->GetNumberOfPoints(); ++i)
        {
                Vector3D p(points->GetPoint(i));
                p = transform.coord(p);
                floatPoints->SetPoint(i, p.begin());
        }
        poly->SetPoints(floatPoints.GetPointer());
        poly->Modified();
//      poly->Update();

        return poly;
}

bool Mesh::isFiberBundle() const
{
        vtkPolyDataPtr poly = getVtkPolyData();
        return poly->GetLines()->GetNumberOfCells() > 0 && poly->GetPolys()->GetNumberOfCells() == 0 && poly->GetStrips()->GetNumberOfCells() == 0;
}

void Mesh::save(const QString& basePath)
{
        vtkPolyDataWriterPtr writer = vtkPolyDataWriterPtr::New();
        writer->SetInputData(this->getVtkPolyData());
        QString filename = basePath + "/Images/" + this->getUid() + ".vtk";
        this->setFilename(QDir(basePath).relativeFilePath(filename));
        writer->SetFileName(cstring_cast(filename));

        writer->Update();
        writer->Write();
}

} // namespace cx