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In lugnet.cad.dat.parts, Jacob Sparre Andersen writes:
> There seems to be an error in 2357.dat (or in LDGLite).
>
> It looks like the winding has been swapped for some of the
> sides, so the wrong surfaces are drawn. This is only visible
> in some special cases.
>
> When you render the example below with LDGLite using the
> command line argument "-a1,0,1,-0.5,-1,0.5,1,0,-1", the
> blue from the neighbouring brick bleeds through because of
> this.
Well it renders the same way in l3lab so it's a bug in the part.
I think the problem is that the inside surface is missing. This
lets us see through to the outside surface of the 2357 brick which
occupies the exact same space as the outside surface of the adjacent
brick. Thus you see blue sometimes and black other times depending
on roundoff errors.
> 0 FILE 2357-fejl.dat
> 0
> 0 Render with:
> 0 ldglite -a1,0,1,-0.5,-1,0.5,1,0,-1 2357-fejl.dat
>
> 1 1 20 56 -270 1 0 0 0 1 0 0 0 1 3004.dat
> 1 0 -30 56 -270 0 0 1 0 1 0 -1 0 0 2357.dat
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