Warp <war### [at] tagpovrayorg> wrote in news:3d2ba80d@news.povray.org:


>> that will create 100x100x100 bits arrar - informing is some point
>> inside object or not.
>   Uh... I didn't understand this at all. What does it help to know if
> a point is inside an object or not, when you are calculating the
> distance of a point from the surface of the object?

in worst case - You can just shut rays at object, as it was in test wersion 
of distance pattern, but it will by much faster to test intersection of 
pixelized rather then i.e. isosurface or complex CSG

> And besides, insideness test is not a problem (it's required for CSG
> and 
> perhaps some other things, and in pov3.5 they even added it to the SDL
> so that you can use it in your scenes; it's the inside() function).

I only suggested : why not optimize (using pre-calculated array) this 
tests, that will result in faster shooting rays and i.e. speeding up 
distance calculations

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