Dear all,
I want to get the positions of a volume using the mouse for segmentation. But the y coordinate is wrong. I only get the x and z fine but the depth (y) is not correct. I use this code to get the position. Is there any way to obtain the slice (y position). I only consider vtk (so i do not need the flipping in y). It is interesting that some areas are working more o less. But others the depth is very different. I only have one object.
thanks
// Get the location of the click (in window coordinates)
int* pos = this->GetInteractor()->GetEventPosition();
vtkSmartPointer<vtkCellPicker> picker =
vtkSmartPointer<vtkCellPicker>::New();
picker->SetTolerance(0.0005);
//this->GetDefaultRenderer()->Clear();
// Pick from this location.
picker->Pick(pos[0], pos[1], 0, global_renderer);
double* worldPosition = picker->GetPickPosition();
std::cout << "Cell id is: " << picker->GetCellId() << std::endl;
if (picker->GetCellId() != -1)
{
std::cout << "Pick position is: " << worldPosition[0] << " " << worldPosition[1]
<< " " << worldPosition[2] << endl;
}