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105 lines
3.7 KiB
105 lines
3.7 KiB
/*=========================================================================
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Program: Visualization Toolkit
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Module: $RCSfile: vtkHomogeneousTransform.h,v $
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Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
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All rights reserved.
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See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notice for more information.
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=========================================================================*/
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// .NAME vtkHomogeneousTransform - superclass for homogeneous transformations
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// .SECTION Description
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// vtkHomogeneousTransform provides a generic interface for homogeneous
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// transformations, i.e. transformations which can be represented by
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// multiplying a 4x4 matrix with a homogeneous coordinate.
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// .SECTION see also
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// vtkPerspectiveTransform vtkLinearTransform vtkIdentityTransform
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#ifndef __vtkHomogeneousTransform_h
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#define __vtkHomogeneousTransform_h
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#include "vtkAbstractTransform.h"
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class vtkMatrix4x4;
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class VTK_COMMON_EXPORT vtkHomogeneousTransform : public vtkAbstractTransform
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{
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public:
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vtkTypeRevisionMacro(vtkHomogeneousTransform,vtkAbstractTransform);
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void PrintSelf(ostream& os, vtkIndent indent);
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// Description:
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// Apply the transformation to a series of points, and append the
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// results to outPts.
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void TransformPoints(vtkPoints *inPts, vtkPoints *outPts);
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// Description:
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// Apply the transformation to a combination of points, normals
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// and vectors.
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virtual void TransformPointsNormalsVectors(vtkPoints *inPts,
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vtkPoints *outPts,
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vtkDataArray *inNms,
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vtkDataArray *outNms,
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vtkDataArray *inVrs,
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vtkDataArray *outVrs);
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// Description:
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// Get a copy of the internal transformation matrix. The
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// transform is Updated first, to guarantee that the matrix
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// is valid.
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void GetMatrix(vtkMatrix4x4 *m);
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// Description:
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// Get a pointer to an internal vtkMatrix4x4 that represents
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// the transformation. An Update() is called on the transform
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// to ensure that the matrix is up-to-date when you get it.
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// You should not store the matrix pointer anywhere because it
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// might become stale.
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vtkMatrix4x4 *GetMatrix() { this->Update(); return this->Matrix; };
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// Description:
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// Just like GetInverse(), but includes typecast to vtkHomogeneousTransform.
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vtkHomogeneousTransform *GetHomogeneousInverse() {
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return (vtkHomogeneousTransform *)this->GetInverse(); };
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// Description:
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// This will calculate the transformation without calling Update.
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// Meant for use only within other VTK classes.
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void InternalTransformPoint(const float in[3], float out[3]);
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void InternalTransformPoint(const double in[3], double out[3]);
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// Description:
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// This will calculate the transformation as well as its derivative
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// without calling Update. Meant for use only within other VTK
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// classes.
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void InternalTransformDerivative(const float in[3], float out[3],
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float derivative[3][3]);
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void InternalTransformDerivative(const double in[3], double out[3],
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double derivative[3][3]);
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protected:
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vtkHomogeneousTransform();
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~vtkHomogeneousTransform();
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void InternalDeepCopy(vtkAbstractTransform *transform);
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vtkMatrix4x4 *Matrix;
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private:
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vtkHomogeneousTransform(const vtkHomogeneousTransform&); // Not implemented.
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void operator=(const vtkHomogeneousTransform&); // Not implemented.
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};
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#endif
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