On 10-10-2012 12:15, Jaime Vives Piqueres wrote:
> On 10/10/12 10:06, Anthony D. Baye wrote:
>> The boards are made from an isosurface that uses the function:
>>
>> f_rounded_box(x,y,z,0.125, W/2-0.03125*OldWood(x-_X,y-_Y,z-_Z).x,
>> T/2-0.078125*OldWood(x-_X,y-_Y,z-_Z), L/2+0.25)
>>
>> Where W, T and L are Width, Thickness and Length and _X, _Y, and _Z
>> are supposed to be random translations, but I don't think that
>> they're getting re-calculated every time the macro is called, or if
>> they are, they're always the same.
>
>    But there you are translating the isosurface function, not the texture
> later applied to it: you need to translate it independently.

Exactly.

>
>    BTW, after seeing at last the "problem object", I think it has an easy
> solution, as long the base the texture is the same for all: just lay the
> "global" texture at each sub-object:
>
> union{
>    object{board1
>      texture{t_wood
>        // local transforms here
>      }
>      texture{t_dirt}
>    }
>    object{board2
>      texture{t_wood
>        // local transforms here
>      }
>      texture{t_dirt}
>    }
>    ...
> }

And of course, the randomness of the pattern is easy to include in this

union{
    object{board1
      texture{t_wood
        // local random translate here
        // local transforms here
      }
      texture{t_dirt}
    }
    object{board2
      texture{t_wood
        // local random translate here
        // local transforms here
      }
      texture{t_dirt}
    }
    ...
}

Note that if you use this for the horizontal and diagonal boards, you 
may have to counter-rotate the dirt texture by the same amount, in order 
to get a correct (?) image.

Thomas

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