Geomview For Windows?
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I am confused. Here's the problem as I understand it. I am trying to get Geomview graphics from Mathematica. I wrote a short mathematica program to create twenty spheres at the vertices of a dodecahedron, then modified the Geomview picture by coloring the spheres. Then I saved the picture using the "Commands" option, for "World" in a file. I repeated this procedure and created a separate file for the edge-graph of a dodecahedron. (By the way, I did all computations in mathematica for each of the spheres and the edges, using the same set of coordinates for the 20 vertices.) After both files were created , I went to mathematica, said Show[Graphics3D] to get the Geomview screen, and then loaded (from Geomview) each of the two files, expecting to see the edge-graph of the dodecahedron with 20 small spheres centered at the vertices, nicely colored. What appears instead is a set of 20 spheres INSIDE the dodecahedron, with the edge graph of the dodecahedron forming outer tangents to the spheres. (It seems to me that this means that the bounding box for each file is the same size, instead of their being somewhat different sizes as they should be.) NOW for the interesting part. I repeated the same procedure, as exactly as my poor typing would allow, modifying the spheres program ONLY by changing the radius to half of what it was before, and instead of creating all 20 spheres, I created only 5 of them (their centers didn't happen to be coplanar). When the final picture came up in Geomview this time, the 5 spheres are nicely centered on their respective vertices, and the 2 bounding boxes, one for the spheres, and one for the edge-graph, are distinct, as they should be. WHAT IS GOING ON? I would be happy to send you whatever details might help in deciphering this. Thanks in advance for any light you shed on this. Dick Bourgin
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