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kurtz le pirate <kur### [at] gmail com> wrote:
> and i get this error : Float expected but vector or color expression found.
> Why this "Float expected but vector or color expression" ?
> I still have a lot to learn ...
What you are experiencing is the lack of crossover between the POV-Ray SDL
parser and the function parser.
When you are using x, y, z in SDL, those refer to the basis vectors of the
cardinal axes.
When those variables are evaluated in a function, they refer to the scalar
components of the pixel coordinates being evaluated.
So the function is expecting x to be a scalar value, but you are feeding it <1,
0, 0>.
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