> Does anyone have any ideas about how to lay out a large area of standard 1-foot
> square linoleum floor tiles?
> I'm mostly concerned with 1) providing for a slight unevenness where the floor
> tiles meet edge to edge, and getting a random orientation of the texture for
> each tile.
>
> Is there a way to modify the brick pigment pattern to obtain a grid,
>
> or would the best bet be to iterate a thin box across the area with a normal to
> give an uneven edge in the z-plane?  Maybe clip the tile with a crud-textured
> box to simulate the dirt buildup in the cracks...
>
>

I'd go for a cells pattern.

First, declare your base pattern going from <0,0> to <1,1> on the X-Z 
plane. DON'T use the once keyword. You WANT the patern to repeat.

Next, create a cells pattern as follow:
#declare My_Tiles= texture{cells
texture_map{
[0.25 texture{Base_Tiles}]
[0.25 texture{Base_Tiles rotate 90*y}]
[0.50 texture{Base_Tiles rotate 90*y}]
[0.50 texture{Base_Tiles rotate 180*y}]
[0.75 texture{Base_Tiles rotate 180*y}]
[0.75 texture{Base_Tiles rotate 270*y}]
  }
}

Next, you only need to properly scale this texture to fit your scene.
If you translate that pattern 1 unit verticaly, you'll get a totaly 
different set of rotations.





Alain

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