BZDEV: adding identity arrays

From: Jon Reiter (jr@cfm.brown.edu)
Date: Thu Jul 30 1998 - 10:55:05 EST


Has anyone worked at all on identity arrays? At the moment it looks
like the only way to get an identity array is to do something like:

Array<float,2> A;

A = 1,0
    0,1;

Which is okay for small arrays but is a huge mess for larger ones. I've
already found myself writing functions to do this since a lot of
graphics algorithims work with 4x4 matricies (okay, the code isn't too
bad for 4x4 but...).

Any thoughts? I was just going to implement it as a member fuctions of
the array class but it seems like someone has probably been here before
since identity matricies are more than somewhat common.

-- 

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