cxGraphicalDisk.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 "cxGraphicalDisk.h"

#include <QColor>
#include <vtkRenderer.h>
#include <vtkActor.h>
#include <vtkPolyDataMapper.h>
#include <vtkProperty.h>
#include <vtkSectorSource.h>
#include "cxVtkHelperClasses.h"
#include "vtkMatrix4x4.h"
#include "vtkLinearExtrusionFilter.h"
#include "vtkPolyDataNormals.h"

namespace cx
{

GraphicalDisk::GraphicalDisk() :
        mOutlineWidth(0.1)
{
        mDirection = Vector3D::UnitZ();
//      std::cout << "GraphicalDisk::create " << mDirection << std::endl;

        mRadius = 1;
        mColor = QColor(Qt::blue);
        mFillVisible = true;
        mOutlineColor = QColor(Qt::magenta);
        mUseLighting = false;
        mHeight = 0;
}

GraphicalDisk::~GraphicalDisk()
{
        this->removeActors();
}

void GraphicalDisk::setRadius(double radius)
{
        mRadius = radius;
}
void GraphicalDisk::setOutlineWidth(double width)
{
        mOutlineWidth = width;
}
void GraphicalDisk::setFillVisible(bool val)
{
        mFillVisible = val;
}
void GraphicalDisk::setOutlineColor(QColor color)
{
        mOutlineColor = color;
}
void GraphicalDisk::setColor(QColor color)
{
        mColor = color;
}
void GraphicalDisk::setPosition(Vector3D pos)
{
        mPosition = pos;
}
void GraphicalDisk::setDirection(Vector3D direction)
{
//      std::cout << "GraphicalDisk::setDirection " << direction << std::endl;

        mDirection = direction;
}
void GraphicalDisk::setLighting(bool on)
{
        mUseLighting = on;
}
void GraphicalDisk::setHeight(double height)
{
        mHeight = height;
}

void GraphicalDisk::setRenderer(vtkRendererPtr renderer)
{
        this->removeActors();
        mRenderer = renderer;
        this->addActors();
}

void GraphicalDisk::addActors()
{
        if (mRenderer && mCircleActor && mOutlineActor)
        {
                mRenderer->AddActor(mCircleActor);
                mRenderer->AddActor(mOutlineActor);
        }
}

void GraphicalDisk::removeActors()
{
        if (mRenderer && mCircleActor && mOutlineActor)
        {
                mRenderer->RemoveActor(mCircleActor);
                mRenderer->RemoveActor(mOutlineActor);
        }
}

void GraphicalDisk::update()
{
        if (!mRenderer)
                return;

        if (!mCircleActor)
        {
                this->createActors();
                this->addActors();
        }

        if (!mCircleActor)
                return;

        mCircleActor->GetProperty()->SetColor(getColorAsVector3D(mColor).begin());
        mOutlineActor->GetProperty()->SetColor(getColorAsVector3D(mOutlineColor).begin());

        double innerRadius = std::max(0.0, mRadius*(1.0 - mOutlineWidth));
        mCircleSource->SetOuterRadius(innerRadius);
        mOutlineSource->SetInnerRadius(innerRadius);
        mOutlineSource->SetOuterRadius(mRadius);

        mCircleExtruder->SetScaleFactor(mHeight);
        mOutlineExtruder->SetScaleFactor(mHeight);

        mCircleActor->SetVisibility(mFillVisible);

        this->updateOrientation();
}

void GraphicalDisk::createActors()
{
        if (mCircleActor)
                return;

        int resolution = 40;

        mCircleSource = vtkSectorSourcePtr::New();
        mCircleSource->SetOuterRadius(mRadius);
        mCircleSource->SetInnerRadius(0);
        mCircleSource->SetStartAngle(0);
        mCircleSource->SetEndAngle(360);
        mCircleSource->SetCircumferentialResolution(resolution);

        mCircleExtruder = vtkLinearExtrusionFilterPtr::New();
        mCircleExtruder->SetInputConnection(mCircleSource->GetOutputPort());
        mCircleExtruder->SetScaleFactor(mHeight);
        mCircleExtruder->SetExtrusionTypeToVectorExtrusion();
        mCircleExtruder->SetVector(0,0,1);

        vtkPolyDataMapperPtr mapper = vtkPolyDataMapperPtr::New();
        mapper->SetInputConnection(mCircleExtruder->GetOutputPort());
        mapper->ScalarVisibilityOff();
        mCircleActor = vtkActorPtr::New();
        mCircleActor->SetMapper(mapper);
        mCircleActor->GetProperty()->SetLighting(mUseLighting);

        mOutlineSource = vtkSectorSourcePtr::New();
        mOutlineSource->SetOuterRadius(mRadius);
        mOutlineSource->SetInnerRadius(0);
        mOutlineSource->SetStartAngle(0);
        mOutlineSource->SetEndAngle(360);
        mOutlineSource->SetCircumferentialResolution(resolution);

        mOutlineExtruder = vtkLinearExtrusionFilterPtr::New();
        mOutlineExtruder->SetInputConnection(mOutlineSource->GetOutputPort());
        mOutlineExtruder->SetScaleFactor(mHeight);
        mOutlineExtruder->SetExtrusionTypeToVectorExtrusion();
        mOutlineExtruder->SetVector(0,0,1);

        vtkPolyDataNormalsPtr normals = vtkPolyDataNormalsPtr::New();
        normals->SetInputConnection(mOutlineExtruder->GetOutputPort());

        vtkPolyDataMapperPtr outlineMapper = vtkPolyDataMapperPtr::New();
        outlineMapper->SetInputConnection(normals->GetOutputPort());
        outlineMapper->ScalarVisibilityOff();
        mOutlineActor = vtkActorPtr::New();
        mOutlineActor->SetMapper(outlineMapper);
        mOutlineActor->GetProperty()->SetLighting(mUseLighting);
}


void GraphicalDisk::updateOrientation()
{
//      Transform3D M = createTransformRotationBetweenVectors(Vector3D::UnitX(), mDirection.normal());

        Vector3D from = Vector3D::UnitZ();
        Transform3D M;
        bool directionAlongYAxis = similar(dot(from, mDirection.normal()), 1.0);

        if (directionAlongYAxis)
        {
                M = Transform3D::Identity();
        }
        else
        {
                Vector3D newXAxis = cross(from, mDirection).normal();
                Vector3D newZAxis = mDirection;
                Vector3D ivec = newXAxis;
                Vector3D jvec = cross(newZAxis, newXAxis);
                Vector3D center = Vector3D::Zero();
                M = createTransformIJC(ivec, jvec, center);

        }

        Transform3D T = createTransformTranslate(mPosition);
        M = T*M;

        mCircleActor->SetUserMatrix(M.getVtkMatrix());
        mOutlineActor->SetUserMatrix(M.getVtkMatrix());

//              mCircleActor->SetPosition(mPosition[0], mPosition[1], mPosition[2]);
//              mOutlineActor->SetPosition(mPosition[0], mPosition[1], mPosition[2]);

}

void GraphicalDisk::setRadiusBySlicingSphere(double sphereRadius, double sliceHeight)
{
        double r = this->getRadiusOfCircleSlicedFromSphere(sphereRadius, sliceHeight);
        this->setRadius(r);
}

double GraphicalDisk::getRadiusOfCircleSlicedFromSphere(double sphereRadius, double sliceHeight) const
{
        double retval = 0;

    if (std::abs(sliceHeight) > sphereRadius)
        {
                retval = 0;
        }
        else
        {
                retval = sphereRadius*cos(asin(sliceHeight/sphereRadius));
        }

        return retval;
}


} // namespace cx