<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=Content-Type content="text/html; charset=utf-8">
<STYLE type=text/css>DIV {
MARGIN: 0px
}
</STYLE>
<META content="MSHTML 6.00.6001.18099" name=GENERATOR></HEAD>
<BODY bgColor=#ffffff>
<DIV><FONT face=Arial size=2>Hi,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2> I spent a day to learn how to use
vtkImagePlaneWidget to render an image volume from the InsightApplication
"itkReadITKImage3DSegmentShowVTK". Now I can do what I planned to do. However, I
have a question in my mind that bothers me a lot. I hope someone can answer my
question or at least direct me to some references.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV> <FONT face=Arial size=2>My basic knowledge tells me that every
renderer needs at least one actor/object associated with it. However, when I
used vtkImagePlaneWidget to view a 3d volume, no actor/object was really added
to the renderer created. I am wondering that how the renderer knows which
actor/object to render? The only hint I can perceive is that the actor/object to
be rendered is set as input to each ImagePlaneWidget and each ImagePlaneWidget
is associated with one RenderWindowInteractor which in turn gets connected with
the renderer. Is this how the renderer connected with the actor/object? If
yes, is this a common mechanism used in VTK (it is quite different from the cone
examples)? Is there any similar example available? </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Chen</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV> </DIV></BODY></HTML>