---

Common/vtkLinearTransform.h

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/*=========================================================================

  Program:   Visualization Toolkit
  Module:    $RCSfile: vtkLinearTransform.h,v $
  Language:  C++

  Copyright (c) 1993-2002 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.

=========================================================================*/
#ifndef __vtkLinearTransform_h
#define __vtkLinearTransform_h

#include "vtkHomogeneousTransform.h"

class VTK_COMMON_EXPORT vtkLinearTransform : public vtkHomogeneousTransform
{
public:

  vtkTypeRevisionMacro(vtkLinearTransform,vtkHomogeneousTransform);
  void PrintSelf(ostream& os, vtkIndent indent);


  void TransformNormal(const float in[3], float out[3]) {
    this->Update(); this->InternalTransformNormal(in,out); };


  void TransformNormal(const double in[3], double out[3]) {
    this->Update(); this->InternalTransformNormal(in,out); };


  double *TransformNormal(double x, double y, double z) {
    return this->TransformDoubleNormal(x,y,z); }
  double *TransformNormal(const double normal[3]) {
    return this->TransformDoubleNormal(normal[0],normal[1],normal[2]); };


  float *TransformFloatNormal(float x, float y, float z) {
    this->InternalFloatPoint[0] = x;
    this->InternalFloatPoint[1] = y;
    this->InternalFloatPoint[2] = z;
    this->TransformNormal(this->InternalFloatPoint,this->InternalFloatPoint);
    return this->InternalFloatPoint; };
  float *TransformFloatNormal(const float normal[3]) {
    return this->TransformFloatNormal(normal[0],normal[1],normal[2]); };


  double *TransformDoubleNormal(double x, double y, double z) {
    this->InternalDoublePoint[0] = x;
    this->InternalDoublePoint[1] = y;
    this->InternalDoublePoint[2] = z;
    this->TransformNormal(this->InternalDoublePoint,this->InternalDoublePoint);
    return this->InternalDoublePoint; };
  double *TransformDoubleNormal(const double normal[3]) {
    return this->TransformDoubleNormal(normal[0],normal[1],normal[2]); };


  double *TransformVector(double x, double y, double z) {
    return this->TransformDoubleVector(x,y,z); }
  double *TransformVector(const double normal[3]) {
    return this->TransformDoubleVector(normal[0],normal[1],normal[2]); };


  void TransformVector(const float in[3], float out[3]) {
    this->Update(); this->InternalTransformVector(in,out); };


  void TransformVector(const double in[3], double out[3]) {
    this->Update(); this->InternalTransformVector(in,out); };


  float *TransformFloatVector(float x, float y, float z) {
      this->InternalFloatPoint[0] = x;
      this->InternalFloatPoint[1] = y;
      this->InternalFloatPoint[2] = z;
      this->TransformVector(this->InternalFloatPoint,this->InternalFloatPoint);
      return this->InternalFloatPoint; };
  float *TransformFloatVector(const float vec[3]) {
    return this->TransformFloatVector(vec[0],vec[1],vec[2]); };


  double *TransformDoubleVector(double x, double y, double z) {
    this->InternalDoublePoint[0] = x;
    this->InternalDoublePoint[1] = y;
    this->InternalDoublePoint[2] = z;
    this->TransformVector(this->InternalDoublePoint,this->InternalDoublePoint);
    return this->InternalDoublePoint; };
  double *TransformDoubleVector(const double vec[3]) {
    return this->TransformDoubleVector(vec[0],vec[1],vec[2]); };

  void TransformPoints(vtkPoints *inPts, vtkPoints *outPts);

  virtual void TransformNormals(vtkDataArray *inNms, vtkDataArray *outNms);

  virtual void TransformVectors(vtkDataArray *inVrs, vtkDataArray *outVrs);


  void TransformPointsNormalsVectors(vtkPoints *inPts, 
                                     vtkPoints *outPts, 
                                     vtkDataArray *inNms, 
                                     vtkDataArray *outNms,
                                     vtkDataArray *inVrs, 
                                     vtkDataArray *outVrs);


  vtkLinearTransform *GetLinearInverse() { 
    return (vtkLinearTransform *)this->GetInverse(); }; 


  void InternalTransformPoint(const float in[3], float out[3]);
  void InternalTransformPoint(const double in[3], double out[3]);


  virtual void InternalTransformNormal(const float in[3], float out[3]);
  virtual void InternalTransformNormal(const double in[3], double out[3]);


  virtual void InternalTransformVector(const float in[3], float out[3]);
  virtual void InternalTransformVector(const double in[3], double out[3]);


  void InternalTransformDerivative(const float in[3], float out[3],
                                   float derivative[3][3]);
  void InternalTransformDerivative(const double in[3], double out[3],
                                   double derivative[3][3]);

protected:
  vtkLinearTransform() {};
  ~vtkLinearTransform() {};
private:
  vtkLinearTransform(const vtkLinearTransform&);  // Not implemented.
  void operator=(const vtkLinearTransform&);  // Not implemented.
};

#endif

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