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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: itkCylinderSpatialObject.cxx
Language: C++
Date: $Date$
Version: $Revision$
Copyright (c) Insight Software Consortium. All rights reserved.
See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#include "itkCylinderSpatialObject.h"
#include <string.h>
namespace itk
{
/** Constructor */
CylinderSpatialObject::CylinderSpatialObject()
{
this->SetTypeName("CylinderSpatialObject");
this->SetDimension(3);
m_Radius = 1.0;
m_Height = 1.0;
}
/** Destructor */
CylinderSpatialObject ::~CylinderSpatialObject()
{
}
/** Test whether a point is inside or outside the object
* For computational speed purposes, it is faster if the method does not
* check the name of the class and the current depth */
bool CylinderSpatialObject
::IsInside( const PointType & point) const
{
if( !this->SetInternalInverseTransformToWorldToIndexTransform() )
{
return false;
}
PointType transformedPoint =
this->GetInternalInverseTransform()->TransformPoint(point);
this->ComputeLocalBoundingBox();
if( this->GetBounds()->IsInside(point) )
{
// Check if the point is on the normal plane
PointType a,b;
a[0] = 0;
a[1] = -m_Height/2;
a[2] = 0;
b[0] = 0;
b[1] = m_Height/2;
b[2] = 0;
double A = 0;
double B = 0;
for(unsigned int i = 0;i<3;i++)
{
A += (b[i]-a[i])*(transformedPoint[i]-a[i]);
B += (b[i]-a[i])*(b[i]-a[i]);
}
double lambda = A/B;
if( (
(lambda>-(m_Radius/(2*vcl_sqrt(B))))
&& (lambda<0))
|| ((lambda <= 1.0) && (lambda >= 0.0))
)
{
PointType p;
for(unsigned int i = 0;i<3;i++)
{
p[i] = a[i]+lambda*(b[i]-a[i]);
}
double tempSquareDist=transformedPoint.EuclideanDistanceTo(p);
double R = m_Radius;
if(tempSquareDist <= R)
{
return true;
}
}
}
return false;
}
/** Test if the given point is inside the Cylinder */
bool CylinderSpatialObject
::IsInside( const PointType & point, unsigned int depth, char * name ) const
{
itkDebugMacro( "Checking the point [" << point << "] is inside the Cylinder" );
if(name == NULL)
{
if(IsInside(point))
{
return true;
}
}
else if(strstr(typeid(Self).name(), name))
{
if(IsInside(point))
{
return true;
}
}
return Superclass::IsInside(point, depth, name);
}
/** Compute the bounds of the Cylinder */
bool CylinderSpatialObject
::ComputeLocalBoundingBox() const
{
itkDebugMacro( "Computing tube bounding box" );
if( this->GetBoundingBoxChildrenName().empty()
|| strstr(typeid(Self).name(), this->GetBoundingBoxChildrenName().c_str()) )
{
// First point
PointType ptMin,ptMax;
ptMin[0] = -m_Radius;
ptMin[1] = -m_Height/2;
ptMin[2] = -m_Radius;
ptMin = this->GetIndexToWorldTransform()->TransformPoint(ptMin);
ptMax[0] = +m_Radius;
ptMax[1] = -m_Height/2;
ptMax[2] = +m_Radius;
ptMax = this->GetIndexToWorldTransform()->TransformPoint(ptMax);
const_cast<BoundingBoxType *>(this->GetBounds())->SetMinimum(ptMin);
const_cast<BoundingBoxType *>(this->GetBounds())->SetMaximum(ptMax);
ptMin[0] = -m_Radius;
ptMin[1] = +m_Height/2;
ptMin[2] = -m_Radius;
ptMin = this->GetIndexToWorldTransform()->TransformPoint(ptMin);
ptMax[0] = +m_Radius;
ptMax[1] = +m_Height/2;
ptMax[2] = +m_Radius;
ptMax = this->GetIndexToWorldTransform()->TransformPoint(ptMax);
const_cast<BoundingBoxType *>(this->GetBounds())->ConsiderPoint(ptMin);
const_cast<BoundingBoxType *>(this->GetBounds())->ConsiderPoint(ptMax);
}
return true;
}
/** Returns if the Cylinder os evaluable at one point */
bool CylinderSpatialObject
::IsEvaluableAt( const PointType & point, unsigned int depth, char * name ) const
{
itkDebugMacro( "Checking if the Cylinder is evaluable at " << point );
return IsInside(point, depth, name);
}
/** Returns the value at one point */
bool CylinderSpatialObject
::ValueAt( const PointType & point, double & value, unsigned int depth,
char * name ) const
{
itkDebugMacro( "Getting the value of the Cylinder at " << point );
if( IsInside(point, 0, name) )
{
value = this->GetDefaultInsideValue();
return true;
}
else
{
if( Superclass::IsEvaluableAt(point, depth, name) )
{
Superclass::ValueAt(point, value, depth, name);
return true;
}
else
{
value = this->GetDefaultOutsideValue();
return false;
}
}
return false;
}
/** Print Self function */
void CylinderSpatialObject
::PrintSelf( std::ostream& os, Indent indent ) const
{
Superclass::PrintSelf(os, indent);
os << "Radius: " << m_Radius << std::endl;
os << "Height: " << m_Height << std::endl;
}
} // end namespace itk
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