Sounds very interesting, but also very ununderstandable! Ray, I just never 
had POV-Ray doing such. I even don't know, how. Can you give me/us more 
details? Can you describe the entire procedure?

Sorry for my unknowledgement, but I really want to understand your idea as I 
truly look for suggestions.

Thanks, greetings,

Sven





"Ray Gardener" <ray### [at] daylongraphicscom> schrieb im Newsbeitrag 
news:445c4cab$1@news.povray.org...
> It's trivially easy, actually.  Just render the selection region to a 
> 1-bit mask, then test the mask pixels to see if a display pixel should be 
> rendered.
>
> Ray
>
>
> Chambers wrote:
>> Alain wrote:
>>> Also, rendering an irregular shaped area could ultimately be slower than 
>>> a slightly to large area. This will be due to a substentialy more 
>>> complex code. The code for a simple square section is simple: you limit 
>>> the region to render. That for an arbitrary free-hand capture will need 
>>> to test every pixel against the desired area. You may also need to 
>>> render, but not display, in a, square, region larger than the selected 
>>> area.
>>
>> While I don't necessarily think we need this feature, I don't think it 
>> would be that bad.  For each line, you could just store the beginning and 
>> ending points (assuming only convex shapes were allowed) and render a 
>> straight line across.
>>
>> ...Chambers

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