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Tubes renders zero-dimensional objects

  • To: mathgroup at smc.vnet.net
  • Subject: [mg126568] Tubes renders zero-dimensional objects
  • From: dwt2004 at gmail.com
  • Date: Sat, 19 May 2012 05:47:18 -0400 (EDT)
  • Delivered-to: l-mathgroup@mail-archive0.wolfram.com

Tubes with length 0 (machine precision) are rendered, and they appear to have a different CapForm as well.  Why?

Graphics3D[{Hue[0], CapForm["Butt"], ViewVertical -> {0, 1, 0}, 
  ViewPoint -> {8, -4, 2}, 
  Table[Tube[{{i, 0, j}, {i, 
      Re[7*(1 - (Sqrt[(i/1.2)^2 + ((j - 5)/0.9)^2]/4.5)^2)^(3/2)], 
      j}}, 0.3], {i, -8, 8, 1}, {j, 2, 8, 1}]}]

See the image posted at http://postimage.org/image/dzxyruptp/

Mac OS 10.6.8 32-bit, Intel Core i7, 4GB RAM, Mathematica Student 8.0.4.0



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