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<DIV><FONT face="Times New Roman" size=4>Hi, VTK users:</FONT></DIV>
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<DIV><FONT face="Times New Roman" size=4> I
display a 3D image using the raycasting method. However , when I change
the position of camera I saw nothing. I set the potition of the camera to the
default value, but nothing desplayed on the screen. How can I change the camera
to view the image?</FONT></DIV>
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<DIV><FONT face="Times New Roman" size=4>thank you in advance!</FONT></DIV>
<DIV><FONT face="Times New Roman" size=4>yxliu</FONT></DIV></BODY></HTML>