Mouse click with TGE 1.4.2

I have been like at the editTSCtrl.cc file and seen this methods.

void EditTSCtrl::onMouseDown(const GuiEvent & event)
{
make3DMouseEvent(mLastEvent, event);
on3DMouseDown(mLastEvent);
}

and

void EditTSCtrl::make3DMouseEvent(Gui3DMouseEvent & gui3DMouseEvent, const GuiEvent & event)
{
(GuiEvent&)(gui3DMouseEvent) = event;

// get the eye pos and the mouse vec from that...
Point3F sp(event.mousePoint.x, event.mousePoint.y, 1);

Point3F wp;
unproject(sp, &wp);

gui3DMouseEvent.pos = smCamPos;
gui3DMouseEvent.vec = wp - smCamPos;
gui3DMouseEvent.vec.normalize();
}


Can this been use to see if an object like a coin or something has been click in 3D space?