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/*=========================================================================
Program: Visualization Toolkit
Module: vtkHomogeneousTransform.h
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/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 notice for more information.
=========================================================================*/
/**
* @class vtkHomogeneousTransform
* @brief superclass for homogeneous transformations
*
* vtkHomogeneousTransform provides a generic interface for homogeneous
* transformations, i.e. transformations which can be represented by
* multiplying a 4x4 matrix with a homogeneous coordinate.
* @sa
* vtkPerspectiveTransform vtkLinearTransform vtkIdentityTransform
*/
#ifndef vtkHomogeneousTransform_h
#define vtkHomogeneousTransform_h
#include "vtkCommonTransformsModule.h" // For export macro
#include "vtkAbstractTransform.h"
class vtkMatrix4x4;
class VTKCOMMONTRANSFORMS_EXPORT vtkHomogeneousTransform : public vtkAbstractTransform
{
public:
vtkTypeMacro(vtkHomogeneousTransform,vtkAbstractTransform);
void PrintSelf(ostream& os, vtkIndent indent) VTK_OVERRIDE;
/**
* Apply the transformation to a series of points, and append the
* results to outPts.
*/
void TransformPoints(vtkPoints *inPts, vtkPoints *outPts) VTK_OVERRIDE;
/**
* Apply the transformation to a combination of points, normals
* and vectors.
*/
void TransformPointsNormalsVectors(vtkPoints *inPts,
vtkPoints *outPts,
vtkDataArray *inNms,
vtkDataArray *outNms,
vtkDataArray *inVrs,
vtkDataArray *outVrs) VTK_OVERRIDE;
/**
* Get a copy of the internal transformation matrix. The
* transform is Updated first, to guarantee that the matrix
* is valid.
*/
void GetMatrix(vtkMatrix4x4 *m);
/**
* Get a pointer to an internal vtkMatrix4x4 that represents
* the transformation. An Update() is called on the transform
* to ensure that the matrix is up-to-date when you get it.
* You should not store the matrix pointer anywhere because it
* might become stale.
*/
vtkMatrix4x4 *GetMatrix() { this->Update(); return this->Matrix; };
/**
* Just like GetInverse(), but includes typecast to vtkHomogeneousTransform.
*/
vtkHomogeneousTransform *GetHomogeneousInverse()
{
return static_cast<vtkHomogeneousTransform *>(this->GetInverse());
}
//@{
/**
* This will calculate the transformation without calling Update.
* Meant for use only within other VTK classes.
*/
void InternalTransformPoint(const float in[3], float out[3]) VTK_OVERRIDE;
void InternalTransformPoint(const double in[3], double out[3]) VTK_OVERRIDE;
//@}
//@{
/**
* This will calculate the transformation as well as its derivative
* without calling Update. Meant for use only within other VTK
* classes.
*/
void InternalTransformDerivative(const float in[3], float out[3],
float derivative[3][3]) VTK_OVERRIDE;
void InternalTransformDerivative(const double in[3], double out[3],
double derivative[3][3]) VTK_OVERRIDE;
//@}
protected:
vtkHomogeneousTransform();
~vtkHomogeneousTransform() VTK_OVERRIDE;
void InternalDeepCopy(vtkAbstractTransform *transform) VTK_OVERRIDE;
vtkMatrix4x4 *Matrix;
private:
vtkHomogeneousTransform(const vtkHomogeneousTransform&) VTK_DELETE_FUNCTION;
void operator=(const vtkHomogeneousTransform&) VTK_DELETE_FUNCTION;
};
#endif
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