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Common/vtkTransform.h

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

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


Copyright (c) 1993-2001 Ken Martin, Will Schroeder, Bill Lorensen 
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

 * Redistributions of source code must retain the above copyright notice,
   this list of conditions and the following disclaimer.

 * Redistributions in binary form must reproduce the above copyright notice,
   this list of conditions and the following disclaimer in the documentation
   and/or other materials provided with the distribution.

 * Neither name of Ken Martin, Will Schroeder, or Bill Lorensen nor the names
   of any contributors may be used to endorse or promote products derived
   from this software without specific prior written permission.

 * Modified source versions must be plainly marked as such, and must not be
   misrepresented as being the original software.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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

#ifndef __vtkTransform_h
#define __vtkTransform_h

#include "vtkLinearTransform.h"
#include "vtkMatrix4x4.h"

class VTK_COMMON_EXPORT vtkTransform : public vtkLinearTransform
{
 public:
  static vtkTransform *New();
  vtkTypeMacro(vtkTransform,vtkLinearTransform);
  void PrintSelf(ostream& os, vtkIndent indent);

  void Identity();

  void Inverse();


  void Translate(double x, double y, double z) {
    this->Concatenation->Translate(x,y,z); };
  void Translate(const double x[3]) { this->Translate(x[0], x[1], x[2]); };
  void Translate(const float x[3]) { this->Translate(x[0], x[1], x[2]); };


  void RotateWXYZ(double angle, double x, double y, double z) {
    this->Concatenation->Rotate(angle,x,y,z); };
  void RotateWXYZ(double angle, const double axis[3]) {
    this->RotateWXYZ(angle, axis[0], axis[1], axis[2]); };
  void RotateWXYZ(double angle, const float axis[3]) {
    this->RotateWXYZ(angle, axis[0], axis[1], axis[2]); };


  void RotateX(double angle) { this->RotateWXYZ(angle, 1, 0, 0); };
  void RotateY(double angle) { this->RotateWXYZ(angle, 0, 1, 0); };
  void RotateZ(double angle) { this->RotateWXYZ(angle, 0, 0, 1); };


  void Scale(double x, double y, double z) {
    this->Concatenation->Scale(x,y,z); };
  void Scale(const double s[3]) { this->Scale(s[0], s[1], s[2]); };
  void Scale(const float s[3]) { this->Scale(s[0], s[1], s[2]); };


  void SetMatrix(vtkMatrix4x4 *matrix) { 
    this->SetMatrix(*matrix->Element); };
  void SetMatrix(const double elements[16]) { 
    this->Identity(); this->Concatenate(elements); };


  void Concatenate(vtkMatrix4x4 *matrix) { 
    this->Concatenate(*matrix->Element); };
  void Concatenate(const double elements[16]) {
    this->Concatenation->Concatenate(elements); };

  void Concatenate(vtkLinearTransform *transform);


  void PreMultiply() { 
    if (this->Concatenation->GetPreMultiplyFlag()) { return; }
    this->Concatenation->SetPreMultiplyFlag(1); this->Modified(); };


  void PostMultiply()  { 
    if (!this->Concatenation->GetPreMultiplyFlag()) { return; }
    this->Concatenation->SetPreMultiplyFlag(0); this->Modified(); };


  int GetNumberOfConcatenatedTransforms() {
    return this->Concatenation->GetNumberOfTransforms() + 
      (this->Input == NULL ? 0 : 1); };


  vtkLinearTransform *GetConcatenatedTransform(int i) {
    if (this->Input == NULL) {
      return (vtkLinearTransform *)this->Concatenation->GetTransform(i); }
    else if (i < this->Concatenation->GetNumberOfPreTransforms()) {
      return (vtkLinearTransform *)this->Concatenation->GetTransform(i); }
    else if (i > this->Concatenation->GetNumberOfPreTransforms()) {
      return (vtkLinearTransform *)this->Concatenation->GetTransform(i-1); } 
    else if (this->GetInverseFlag()) {
      return (vtkLinearTransform *)this->Input->GetInverse(); }
    else {
      return (vtkLinearTransform *)this->Input; } };


  void GetOrientation(double orient[3]);
  void GetOrientation(float orient[3]) {
    double temp[3]; this->GetOrientation(temp); 
    orient[0] = temp[0]; orient[1] = temp[1]; orient[2] = temp[2]; };
  float *GetOrientation() { 
    this->GetOrientation(this->ReturnValue); return this->ReturnValue; };


  void GetOrientationWXYZ(double wxyz[4]);
  void GetOrientationWXYZ(float wxyz[3]) {
    double temp[4]; this->GetOrientationWXYZ(temp); 
    wxyz[0]=temp[0]; wxyz[1]=temp[1]; wxyz[2]=temp[2]; wxyz[3]=temp[3];};
  float *GetOrientationWXYZ() { 
    this->GetOrientationWXYZ(this->ReturnValue); return this->ReturnValue; };


  void GetPosition(double pos[3]);
  void GetPosition(float pos[3]) {
    double temp[3]; this->GetPosition(temp); 
    pos[0] = temp[0]; pos[1] = temp[1]; pos[2] = temp[2]; };
  float *GetPosition() { 
    this->GetPosition(this->ReturnValue); return this->ReturnValue; };


  void GetScale(double scale[3]);
  void GetScale(float scale[3]) {
    double temp[3]; this->GetScale(temp); 
    scale[0] = temp[0]; scale[1] = temp[1]; scale[2] = temp[2]; };
  float *GetScale() { 
    this->GetScale(this->ReturnValue); return this->ReturnValue; };

  void GetInverse(vtkMatrix4x4 *inverse);

  void GetTranspose(vtkMatrix4x4 *transpose);


  void SetInput(vtkLinearTransform *input);
  vtkLinearTransform *GetInput() { return this->Input; };


  int GetInverseFlag() {
    return this->Concatenation->GetInverseFlag(); };


  void Push() { if (this->Stack == NULL) { 
                    this->Stack = vtkTransformConcatenationStack::New(); }
                this->Stack->Push(&this->Concatenation); 
                this->Modified(); };


  void Pop() { if (this->Stack == NULL) { return; }
               this->Stack->Pop(&this->Concatenation);
               this->Modified(); };

  int CircuitCheck(vtkAbstractTransform *transform);

  // Return an inverse transform which will always update itself
  // to match this transform.
  vtkAbstractTransform *GetInverse() { 
    return vtkLinearTransform::GetInverse(); }

  vtkAbstractTransform *MakeTransform();

  unsigned long GetMTime();


  void MultiplyPoint(const float in[4], float out[4]) {
    this->GetMatrix()->MultiplyPoint(in,out);};
  void MultiplyPoint(const double in[4], double out[4]) {      
    this->GetMatrix()->MultiplyPoint(in,out);};

protected:
  vtkTransform ();
  ~vtkTransform ();

  void InternalDeepCopy(vtkAbstractTransform *t);

  void InternalUpdate();

  vtkLinearTransform *Input;
  vtkTransformConcatenation *Concatenation;
  vtkTransformConcatenationStack *Stack;

  // this allows us to check whether people have been fooling
  // around with our matrix
  unsigned long MatrixUpdateMTime;

  float Point[4];
  double DoublePoint[4];
  float ReturnValue[4];
private:
  vtkTransform (const vtkTransform& t);  // Not implemented.
  void operator=(const vtkTransform&);  // Not implemented.
};

#endif

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