Apache wrote:
> 7.4.5 Focal blur hexgrid constants
> Hex_Blur1 = 7
> Hex_Blur2 = 19
> Hex_Blur3 = 37
> 
> I have two questions about this:
> 1. What are they used for?
> 2. I'd like to know how I might calculate Hex_blur4, Hex_blur5 etc etc
> 3. When using focal blur, does blur_samples 8 look worse blur_samples 7?
> 

I don't know what they are, but I used my TI-86 to find that the points 
(1,7), (2,19) and (3,37) fit on the curve y = 3x^2 + 3x + 1 where x 
would be the x in Hex_Blurx and y would be the constants.
According to the above equation, Hex_Blur4 would be 61, Hex_Blur5 would 
be 91 and Hex_Blur6 would be 127.
I used the quadratic fit because it gave 7, 19 and 37 extactly.  The 
other fits like linear and logrithimic gave correlations of .99 or .97.

Brendan

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