Hello, I am a developer working on the open-source mathematical software Sage (<http://sagemath.org>). We use Jmol as one of our rendering backends for plotting functions in 3D. I am currently helping to implement an implicit 3D plotting feature, to graph contours of functions of the form f(x,y,z)=c. You can view our progress at <http://trac.sagemath.org/sage_trac/ticket/5249>. This type of plot is an isosurface, so to communicate with the Jmol backend we chose to use the JVXL format -- our software outputs a JVXL file describing the plot which is then rendered by Jmol. However, many of the plots appear very jagged when rendered by Jmol.
Let me show you what I mean. Here are three pictures of the plot for (x^3 + y^2 - z^2) = 0: * This one is rendered at a low resolution (10x10x10) by Jmol: <http://students.washington.edu/wcauchoi/misc/jmol_plot_lores.jpeg>. The surface is not at all smooth. * This one is rendered at a higher resolution (100x100x100) by Jmol: <http://students.washington.edu/wcauchoi/misc/jmol_plot_hires.jpeg>. The surface is covered in small bumps. * For comparison, here it is rendered using Tachyon (our other backend): <http://students.washington.edu/wcauchoi/misc/tachyon_plot.png>. I've been trying to find bugs in our code, to no avail. Is there anyone well-versed in the JVXL format who knows why this might be happening? Thanks, Bill Cauchois ------------------------------------------------------------------------------ Stay on top of everything new and different, both inside and around Java (TM) technology - register by April 22, and save $200 on the JavaOne (SM) conference, June 2-5, 2009, San Francisco. 300 plus technical and hands-on sessions. Register today. Use priority code J9JMT32. http://p.sf.net/sfu/p _______________________________________________ Jmol-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/jmol-users
