Hello,<br><br>i'm developing a simple application that visualizes medical datasets in different views ( axial, coronal , sagittal ) with vtkImageViewer2.<br><br>My purpose is to draw simple objects ( like spheres, quads, lines, etc ) on top of the current view, that represent annotations of that volume ( like distances, angles , ROI's, etc )
<br>For example, if i'm taking a distance, i wan't to see a little circle for the first and the second point and a line that connects both points.<br><br>I thought that could be a good idea to draw in a different renderer these geometrics objects and then have two renderers in the same render window ( the vtkImageViewer2 one ). My question is how do I have two different layers ( the renderers ) for the same render window in vtkImageViewer2 to do this.
<br><br>Maybe having two renderers is not the best solution, so if there's any better solution, what's the best approach to do this?<br><br>Thanks in advance<br>