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"Thorsten" <tho### [at] ewetel net> wrote in message
news:3BB9CBBB.2A60D60E@ewetel.net...
> Hello :-))
>
> How about changing the Quad and Smooth_Quad (shapes.inc) ?
>
> The current form is:
> #macro Quad(A, B, C, D)
> triangle {A, B, C}
> triangle {A, C, D}
> #end
> #macro Smooth_Quad(A, NA, B, NB, C, NC, D, ND)
> smooth_triangle {A, NA, B, NB, C, NC}
> smooth_triangle {A, NA, C, NC, D, ND}
> #end
>
> Maybe it's a question of preferences. But...
> Any other form of shapes.inc (I've played around with so far)
> can be used as object.
> To keep this concept of having objects in shapes.inc
> I suggest these changes:
>
> #macro Quad(A, B, C, D)
> union{ // added
> triangle {A, B, C}
> triangle {A, C, D}
> } // added
> #end
> #macro Smooth_Quad(A, NA, B, NB, C, NC, D, ND)
> union{ // added
> smooth_triangle {A, NA, B, NB, C, NC}
> smooth_triangle {A, NA, C, NC, D, ND}
> } // added
> #end
>
> Or could there be any problems caused by declaring
> the Quad and Smooth_Quad as unions?
>
> Greetings :-))
>
You might have a point from a preference standpoint. However, the macro is best
left in its current form, as it would most likely be called several times within
a union{} or even mesh{} block.
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