I created a mesh in blender which I am importing (by saving as a 3ds, 
then converting in poseray), to use as a "heightfield".  My plans are to 
use this in an animation, and I need this mesh at a pretty high level of 
detail as the scene is quite large and I'm doing I "fly-through" type 
animation.  I have 3 Q's about using this mesh.

1) In terms of rendering time, would it be quicker to use the mesh, or 
to convert the mesh into a 16-bit height_field, like what is done in the 
height_field tutorial of the documentation?

2) If rendering the mesh is faster, how do I determine the size of the 
mesh?  I know it's not coming in as a 1x1x1 sized object, like the 
height_field would be.  In my test run, centering required that I 
translate it by <0.05,0.1375,0.34>, and even that is my best guess.

3) According to the documentation, a Mesh2 object is better (and faster) 
for povray.  If their any convenient way to convert my mesh into a mesh2?

Thanx for your help

Bryan

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