In article <3903B901.58BBF765@pacbell.net>, lin### [at] povrayorg 
wrote:

> Glen Berry wrote:
> 
> > My first idea was the more general method of supplying custom
> > parameters to achieve a given result. Perhaps to even include a
> > "formula parser" that would allow the end-user to enter a unique
> > formula for the effect desired.
> > 
> > A list of parameters or formulas that are known to produce interesting
> > results should be included with the patch, just to get people started.
> > They can always try their own values or formulas, after experimenting
> > with the samples provided with the patch.
> 
> Someone once suggested a filter matrix similar to the one used by paint
> programs such as the one available in PSP.

I believe that is called a "convolution matrix"(?). It should be pretty 
easy to do, and is one of the approaches I have been trying with my 
pattern blurring patch. However, it doesn't really have anything to do 
with the stuff currently being discussed.

-- 
Christopher James Huff - Personal e-mail: chr### [at] yahoocom
TAG(Technical Assistance Group) e-mail: chr### [at] tagpovrayorg
Personal Web page: http://chrishuff.dhs.org/
TAG Web page: http://tag.povray.org/

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