Le_Forgeron <lef### [at] freefr> wrote:
> Le 17/08/2012 05:26, ltong a écrit :
> > This is certainly simple for advanced users, but I'm having problem to figure it
> > out. The documentation says value_n in color_map is calculated using x,y,z
> > location of a point where color_n will be applied. So, how is value_n calculated
> > exactly? How does one know which position value_n represents in an object? I
> > would guess translation and rotation don't affect. Many thanks in advance!
> >
> >
> >
>
>
> Hello,
>
> when referencing documentation which might need clarification, please
> provide at least an exact reference to it, or cite it.
>
> For instance,
> > http://wiki.povray.org/content/Reference:Color_Map
> states that:
>
> === begin quote ===
>
> Each of the various pattern types available is in fact a mathematical
> function that takes any x, y, z location and turns it into a number
> between 0.0 and 1.0 inclusive. That number is used to specify what mix
> of colors to use from the color map.
>
> === end quote ===
>
>
> So, the value_n used for the color_map is computed by the pattern. The
> pattern you choose to associate for the pigment that uses the color_map
>
> Regarding influence of rotation/translation/scale/transform, please check:
> >>
http://wiki.povray.org/content/Documentation:Tutorial_Section_2.2#Transforming_Textures_and_Objects
>
> Have a nice day.

Thanks a lot!

Sorry for forgetting to put the reference, the one you showed is exactly the one
I meant.

Will read through the pattern Section, and thanks for the link!

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