Method SetTransform

Interaction/Widgets/vtkBoxWidget.cxx:1291–1349

}

void vtkBoxWidget::SetTransform(vtkTransform* t)
{
  if (!t)
  {
    vtkErrorMacro(<< "vtkTransform t must be non-nullptr");
    return;
  }

  double* pts = static_cast<vtkDoubleArray*>(this->Points->GetData())->GetPointer(0);
  double xIn[3];
  // make sure the transform is up-to-date before using it
  t->Update();

  // Position the eight points of the box and then update the
  // position of the other handles.
  double* bounds = this->InitialBounds;

  xIn[0] = bounds[0];
  xIn[1] = bounds[2];
  xIn[2] = bounds[4];
  t->InternalTransformPoint(xIn, pts);

  xIn[0] = bounds[1];
  xIn[1] = bounds[2];
  xIn[2] = bounds[4];
  t->InternalTransformPoint(xIn, pts + 3);

  xIn[0] = bounds[1];
  xIn[1] = bounds[3];
  xIn[2] = bounds[4];
  t->InternalTransformPoint(xIn, pts + 6);

  xIn[0] = bounds[0];
  xIn[1] = bounds[3];
  xIn[2] = bounds[4];
  t->InternalTransformPoint(xIn, pts + 9);

  xIn[0] = bounds[0];
  xIn[1] = bounds[2];
  xIn[2] = bounds[5];
  t->InternalTransformPoint(xIn, pts + 12);

  xIn[0] = bounds[1];
  xIn[1] = bounds[2];
  xIn[2] = bounds[5];
  t->InternalTransformPoint(xIn, pts + 15);

  xIn[0] = bounds[1];
  xIn[1] = bounds[3];
  xIn[2] = bounds[5];
  t->InternalTransformPoint(xIn, pts + 18);

  xIn[0] = bounds[0];
  xIn[1] = bounds[3];
  xIn[2] = bounds[5];
  t->InternalTransformPoint(xIn, pts + 21);

  this->PositionHandles();