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How to highlight the edges in surface3d plot of rgl package in R

I created a 3d plot with rgl in R like this: 

persp3d(log2(x), log2(y), z, col=color, ticktype="detailed", xlab="filesize [kb]", ylab="record size [kb]", zlab="speed [b/s]", axes=TRUE, back="lines")

Now I want to highlight all edges by black lines. This would basically be the same as drawing a wireframe model over the surface. But I can't find a method in the rgl package that can do the job. The best I found is grid3d(c("x", "y+", "z")) but that highlights only certain edges that I see from behind.

Any help would be greatly appreciated.

here is the picture of the plot so far https://i.sstatic.net/U1aTk.png

Best, Loddi

Solution 
  • surface3d(log2(x), log2(y), z,  back="lines")
surface3d(log2(x), log2(y), z,  front="lines")

    See also ?rgl.material for parameters available