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Thank you for the explanations. Sounds like something worth trying :)
Thibaut
> Thibaut Jonckheere <tua### [at] MAPSONyahoofr> wrote:
>> I like it !
>>
>> and I would be interested by the method and the include file
>
> Well, the method's not complicated, although maybe a little tedious (I did say
> 'relatively' quick!). Import the source image into inkscape, and trace the
> fundamental repeating shape. Not the 'unit cell' of the pattern, just one
> light/dark pair - in the case of the lizards, this was one complete lizard plus
> the spine and eyes from the neighbour. Combine the paths. Export to POV-Ray. A
> few trials (and errors) should allow you to copy and rotate the prism
> sufficient to fill a unit cell. Many of them will be off the edge of the unit
> cell, but no matter. Then, use an object pattern based on a union of the
> prisms, and use repeat warps in x and z to populate the plane.
>
> Some care is needed during tracing to make sure the bits of the shapes line up
> with each other, but you can get away with some errors - look closely at the
> lizards.
>
> This assumes the unit cell is rectangular - I'm not sure how to approach the
> hexagonal/rhomboidal patterns yet.
>
> Bill
>
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