Ken wrote:
> 
> SHELLEYB1 wrote:
> >
> > Can anyone give me a quick tutorial on how to use hieghtfields.  I've
> > already read POV documnentation and I dont understand it.
> 
> From here on height fields will be referred to as HF's.
> 
> You have every right to not understand since it is a difficult
> subject.
> 
> Pov will create a triangle mesh like object using height values
> from an image. The lowest points correspond to black and the
> highest points correspond to white. Different shades of grey
> in between will correspond to height values inbetween black and
> white. These points if the image is made right will make a
> topograhical mesh.
> 
> The easist way to use HF's with Pov is by using an external
> program to create the HF's image. There are several good
> programs for this and I recommend you find one that suits
> your needs. The one I like to use is called Leveller. It
> has a wide array of options available to help you create
> some very realistic mountains, text objects, lake basins,
> etc.
> 
> Once you get better aquainted with the process you can use
> your knowledge to create your own HF images without the
> need of and external program. This process is not for the
> faint of heart and takes a conciderable amount of knowledge
> to make it work.
> 
> If there is a particular aspect about HF's that is still
> confusing you please ask specific questions. Many people
> around here can help out.
> 
> For a list of good programs to work with HF's see the Pov
> VFAQ. It also has a section called bright objects that
> will answer your other question concerning Light Bulbs.
> 
> http://www.students.tut.fi/~warp/povVFAQ.html
> 
> There are many other great information items on the VFAQ
> and you are urged to read it all the way through then
> bookmark the page for further reference.
> 
> --
> Ken Tyler
> 
> tyl### [at] pacbellnet

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