// ------------------------------------------------------------------------
void ValveNormaliser::AlignValve(const ValveType::Pointer &input, ValveType::Pointer &output)
{
if(!output) output = ValveType::New();
ImageType::Pointer image = input->GetImage();
PointType p1 = input->GetP1();
PointType p2 = input->GetP2();
// tranlsation to the origin
m_Transform = TransformType::New();
m_Transform->SetCenter(p1);
TransformType::OutputVectorType axis;
for(unsigned int i = 0; i < 3; i++)
{
axis[i] = -image->GetDirection()(i,2);
}
itk::Vector<double, 3> vec1, vec2;
for(unsigned int i = 0; i < 3; i++)
{
vec1[i] = p2[i]-p1[i];
vec2[i] = image->GetDirection()(i,0);
}
vec1.Normalize();
vec2.Normalize();
double angle = acos(vec2*vec1);
itk::Vector<double,3> axis2 = itk::CrossProduct(vec1,vec2);
axis2.Normalize();
m_Transform->Rotate3D(axis, angle);
typedef itk::ResampleImageFilter<ImageType, ImageType> ResamplerType;
ResamplerType::Pointer resampler = ResamplerType::New();
resampler->SetInput(image);
resampler->SetTransform(m_Transform);
resampler->SetOutputParametersFromImage(image);
resampler->Update();
// create the output
if(!output) output = ValveLine<3>::New();
output->SetImage(resampler->GetOutput());
output->SetP1(m_Transform->TransformPoint(input->GetP1()));
output->SetP2(m_Transform->GetInverseTransform()->TransformPoint(input->GetP2()));
output->UpdateIndexs();
}
// ------------------------------------------------------------------------
void ValveNormaliser::UnNormalise()
{
ImageType::Pointer image = m_Valve->GetImage();
typedef itk::ResampleImageFilter<ImageType, ImageType> ResamplerType;
ResamplerType::Pointer resampler = ResamplerType::New();
resampler->SetInput(image);
resampler->SetTransform(m_Transform->GetInverseTransform());
resampler->SetOutputParametersFromImage(image);
resampler->Update();
m_Output = ValveType::New();
m_Output->SetImage(resampler->GetOutput());
m_Output->SetP1(m_Transform->TransformPoint(m_Valve->GetP1()));
m_Output->SetP2(m_Transform->TransformPoint(m_Valve->GetP2()));
m_Output->UpdateIndexs();
if(m_FlipPoints)
FlipPoints(m_Output, m_Output);
if(m_Flip)
FlipValve(m_Output, m_Output);
}