Kenneth <kdw### [at] earthlinknet> wrote:
> Does anyone know what the underlying reason is for the mirror imaging?

  I have asked this exact same question in the past (with regard to
creating heightfields from functions), and the answer is that nobody
knows. I don't know who the original author of the HF code is, and nobody
knows what he was thinking when he did that, or whether it was just a
design error or bug. Certainly there doesn't seem to be any rational
reason for it to behave like that.

-- 
                                                          - Warp

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