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<DIV><FONT face=Arial size=2><SPAN class=914235922-16012006>I'm wrestling with
the problem of adopting a changing-level-of-detail approach to visualizing the
Earth. I have a terrain map of the Earth and various things I'd like to
texture-map onto it, and I'd like the user to be able to move between views of
the entire planet and detailed views of very small areas.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=914235922-16012006></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=914235922-16012006>I've been looking
for some kind of support for this in VTK and found the vtkLODActor and
vtkLODProp3D classes, but these don't seem to fit the bill<SPAN
class=222451623-16012006>. Because of the amount of data involved, </SPAN>the
application will need to *generate* a new representation of the Earth based on
where the camera is on the Earth, not select a representation
based on the camera's distance from the Earth<SPAN
class=222451623-16012006>.</SPAN><SPAN class=222451623-16012006> You don't ever
want to work with a full-resolution model that includes the whole Earth, as
vtkLODActor would do</SPAN>. Can someone tell me if there is support for this in
VTK, or point me to a VTK project where this has been done?</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=914235922-16012006></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=914235922-16012006>Much thanks for any
help!</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=914235922-16012006></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN
class=914235922-16012006>Charlie</SPAN></FONT></DIV></BODY></HTML>