Method Inverse

Common/Transforms/vtkAbstractTransform.cxx:627–658

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//------------------------------------------------------------------------------
void vtkTransformConcatenation::Inverse()
{
  // invert the matrices
  if (this->PreMatrix)
  {
    this->PreMatrix->Invert();
    this->PreMatrixTransform->Modified();
    int i = (this->InverseFlag ? this->NumberOfTransforms - 1 : 0);
    this->TransformList[i].SwapForwardInverse();
  }

  if (this->PostMatrix)
  {
    this->PostMatrix->Invert();
    this->PostMatrixTransform->Modified();
    int i = (this->InverseFlag ? 0 : this->NumberOfTransforms - 1);
    this->TransformList[i].SwapForwardInverse();
  }

  // swap the pre- and post-matrices
  vtkMatrix4x4* tmp = this->PreMatrix;
  vtkAbstractTransform* tmp2 = this->PreMatrixTransform;
  this->PreMatrix = this->PostMatrix;
  this->PreMatrixTransform = this->PostMatrixTransform;
  this->PostMatrix = tmp;
  this->PostMatrixTransform = tmp2;

  // what used to be pre-transforms are now post-transforms
  this->NumberOfPreTransforms = this->NumberOfTransforms - this->NumberOfPreTransforms;

  this->InverseFlag = !this->InverseFlag;
}

//------------------------------------------------------------------------------
void vtkTransformConcatenation::Identity()