Method SetNormal

Interaction/Widgets/vtkCoordinateFrameRepresentation.cxx:1164–1215

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//------------------------------------------------------------------------------
void vtkCoordinateFrameRepresentation::SetNormal(double x, double y, double z)
{
  double n[3] = { x, y, z };
  vtkMath::Normalize(n);

  const double* xNormal = this->GetXVectorNormal();
  const double* yNormal = this->GetYVectorNormal();
  const double* zNormal = this->GetZVectorNormal();
  double newXNormal[3], newYNormal[3], newZNormal[3];

  // if none of the vectors is locked
  if (!this->XVectorIsLocked && !this->YVectorIsLocked && !this->ZVectorIsLocked)
  {
    // find the vector that is closest to the picked normal using the max dot product
    const double xDot = vtkMath::Dot(n, xNormal);
    const double yDot = vtkMath::Dot(n, yNormal);
    const double zDot = vtkMath::Dot(n, zNormal);
    const double maxDot = std::max({ xDot, yDot, zDot });
    if (xDot == maxDot)
    {
      GramSchmidt(n, yNormal, zNormal, newXNormal, newYNormal, newZNormal);
    }
    else if (yDot == maxDot)
    {
      GramSchmidt(n, zNormal, xNormal, newYNormal, newZNormal, newXNormal);
    }
    else
    {
      GramSchmidt(n, xNormal, yNormal, newZNormal, newXNormal, newYNormal);
    }
  }
  // if one of the vectors is locked
  else
  {
    if (this->XVectorIsLocked)
    {
      GramSchmidt(n, yNormal, zNormal, newXNormal, newYNormal, newZNormal);
    }
    else if (this->YVectorIsLocked)
    {
      GramSchmidt(n, zNormal, xNormal, newYNormal, newZNormal, newXNormal);
    }
    else // ZVectorIsLocked
    {
      GramSchmidt(n, xNormal, yNormal, newZNormal, newXNormal, newYNormal);
    }
  }
  this->SetXVectorNormal(newXNormal);
  this->SetYVectorNormal(newYNormal);
  this->SetZVectorNormal(newZNormal);
  this->BuildRepresentation();
}

//------------------------------------------------------------------------------
void vtkCoordinateFrameRepresentation::SetNormal(double n[3])