Modify transform widget

[timeanddoctor (Li Zhenzhu)]

do you went this?

Is there a way to change the ROI to a sphere

For example, brain surgery incisions are often oval or irregular. If I use a cube ROI, this kind of simulated incision is not very realistic. In addition, we hope that the area inside the ROI can be hidden, so that the internal situation can be seen in real time. Of course, this function can be achieved through PRISM，This function is really necessary for many neurosurgeons.Currently we are more dependent on Volume Rendering than PRISM. Just like the picture above, if I want to make a circular s…