Re: how draw box with open front

*To*: mathgroup at smc.vnet.net*Subject*: [mg83811] Re: [mg83790] how draw box with open front*From*: Murray Eisenberg <murray at math.umass.edu>*Date*: Sat, 1 Dec 2007 05:42:54 -0500 (EST)*Organization*: Mathematics & Statistics, Univ. of Mass./Amherst*References*: <200711301028.FAA07652@smc.vnet.net>*Reply-to*: murray at math.umass.edu

With most helpful suggestions from Kevin McCann to use Polygon in the Graphics3D, I've come up with the following which looks the way I want in Mathematica (6): With[{y = 0.85}, case = Graphics3D[{ EdgeForm[{Thick, Black}], LightGray, Opacity[0.7], Polygon[{{0, 0, 0}, {1, 0, 0}, {1, y, 0}, {0, y, 0}, {0, 0, 0}}], Opacity[0.7], Polygon[{{1, 0, 0}, {1, y, 0}, {1, y, 1}, {1, 0, 1}, {1, 0, 0}}], Polygon[{{0, 0, 1}, {1, 0, 1}, {1, y, 1}, {0, y, 1}, {0, 0, 1}}], Polygon[{{0, y, 0}, {1, y, 0}, {1, y, 1}, {0, 1 y, 1}, {0, y, 0}}], Polygon[{{0, 0, 0}, {0, y, 0}, {0, y, 1}, {0, 0, 1}, {0, 0, 0}}], {Thick, Dashed, Line[{{1, y, 0}, {0.75, y, 0}}], Line[{{0, y, 1}, {0, y, 0.8}}]}, txt["y", {1, 0.35, 0.95}], txt["y", {1.105, 0.35, 0.1}], txt["x", {0.6, 0.7, 1.1}], txt["x", {1.12, 0.6, 0.65}] }, Boxed -> False, Lighting -> "Neutral", ViewPoint -> {1, -2, 0.75}] ] However, if I Export "case" as EPS and then view it in GhostView (or incorporate it into a LaTeX source and distill the result to pdf), I now see spurious dashed grid lines across the polygonal faces -- in white against the back and left-side polygons and in light gray across the top and right-side polygons. There's also one spurious diagonal drawn across each of those polygons. What happened? How can these spurious elements be eliminated in the exported file? Note that I believe I'm really forced to export to EPS, since the ultimate target is for inclusion in a LaTeX document where the EPS format is required so that TeX can determine the bounding box. Murray Eisenberg wrote: > In Mathematica 6, what's the best way to draw a convincing box > (rectangular parallelepiped) with an open front? > > Of course I tried Cuboid, but no matter how I try to treat the faces, it > still looks like the front is solid, too. -- Murray Eisenberg murray at math.umass.edu Mathematics & Statistics Dept. Lederle Graduate Research Tower phone 413 549-1020 (H) University of Massachusetts 413 545-2859 (W) 710 North Pleasant Street fax 413 545-1801 Amherst, MA 01003-9305