Jim Charter wrote:

> Ib Rasmussen wrote:
>> But I did know the mirror trick,
> 
> And I remembered reading about the mirror trick, but when I needed it
> I couldn't remember where.  So I went out and paid like $40 for a book
> on algebra, found out what an "identity matrix" is, deduced from there
> how to use it to mirror, and was feeling pretty gall-darned proud of 
> myself until you through the mirror trick back at me a week or two ago!
> 


Sorry, if I had known, I wouldn't have said anything. :)

I did wonder why you went to the trouble of defining a transform, but 
figured, that you just found your "reverse" form more readable.

If it makes you fell an better, I had to be told too. I would never have 
thought of scaling by a negative value, by myself. Perhaps it should be 
put in the documentation.


/Ib

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