Method Scale

Common/DataModel/vtkBoundingBox.cxx:388–428

------------------------------------------------------------------------------ Description: Scale each dimension of the box by some given factor. If the box is not valid, it stays unchanged. If the scalar factor is negative, bounds are flipped: for example, if (xMin,xMax)=(-2,4) and sx=-3, (xMin,xMax) becomes (-12,6).

// If the scalar factor is negative, bounds are flipped: for example,
// if (xMin,xMax)=(-2,4) and sx=-3, (xMin,xMax) becomes (-12,6).
void vtkBoundingBox::Scale(double sx, double sy, double sz)
{
  if (this->IsValid())
  {
    if (sx >= 0.0)
    {
      this->MinPnt[0] *= sx;
      this->MaxPnt[0] *= sx;
    }
    else
    {
      double tmp = this->MinPnt[0];
      this->MinPnt[0] = sx * this->MaxPnt[0];
      this->MaxPnt[0] = sx * tmp;
    }

    if (sy >= 0.0)
    {
      this->MinPnt[1] *= sy;
      this->MaxPnt[1] *= sy;
    }
    else
    {
      double tmp = this->MinPnt[1];
      this->MinPnt[1] = sy * this->MaxPnt[1];
      this->MaxPnt[1] = sy * tmp;
    }

    if (sz >= 0.0)
    {
      this->MinPnt[2] *= sz;
      this->MaxPnt[2] *= sz;
    }
    else
    {
      double tmp = this->MinPnt[2];
      this->MinPnt[2] = sz * this->MaxPnt[2];
      this->MaxPnt[2] = sz * tmp;
    }
  }
}

//------------------------------------------------------------------------------
void vtkBoundingBox::Scale(double s[3])