Question about LOD node

Ian Leicht ([email protected])
Fri, 9 Jun 1995 13:26:12 -0700


Hi, I am a newcomer to VRML. I have read the VRML spec and have started reading
the Inventor Mentor. I have run into some problems with LOD nodes however. I
want to use "ShapeHI" when close ---> "ShapeLow" when far away.

I have cut out a number of things from my code to abbreviate it, bu following
is a skeleton of it. When I run it, I get

Inventor read error: Expected '{'; got '['

The line that it complains about is the "ranges" line. If I comment it out,
it loads up without complaining. I can then use the complexity settings in the
web space browser to switch between the three levels of detail. I don't
understand how I am using the ranges field wrong -- I am using what the example
in the webspace documentation suggested as far as I can tell.

Thanks.

DEF Shape LOD {

ranges [5,10]
center 0 0 0

DEF ShapeHI Separator {
Separator { # high complexity w/ texture

.... object w/ lots of polygons and texture

}
}

DEF ShapeMed Separator {
Separator { # medium complex

... object w/ lots of polygons

}
}

DEF ShapeLow Separator {
Separator { # not compliex

... object w/ a few polygons

}
}
}

-- 
------------------------------+-----------------------------------------------
Ian Leicht                    |URL: http://www.cs.hmc.edu/people/ian.html
Personal: [email protected]      |Evolution - Love it or Leave it
Work: [email protected]|A cigar is a cigar, but a good woman is a smoke