This archive contains sample files that were produced with NXplot3d v3.0. This file contains descriptions of all of the included files, and some information on how they were made. You will need to get Movie.app (or something similar) to see the animations. It can be obtained from any of the standard NeXT ftp sites. All of these files are in 32 bit color. They won't look nearly as nice on a grey scale only machine. It is possible to adjust the colors in NXplot3d for good greyscale output, I just didn't do so for these demos ... NXplot3d's main distribution site is ion.rice.edu. I will also attempt to keep the copies at cs.orst.edu and sonata.cc.purdue.edu current. Comments and questions should be directed to : Steve Ludtke steve@ion.rice.edu stevel@alumni.caltech.edu (<- this address should always be good) 72335,1537 (compuserve) Physics Dept. Rice University Houston, TX 77251-1892 data1.tiff : Some sample data from our lab (x-ray diffraction data if you care). This plot was created with the following options: backs,labels,ticks and floor. The 2d mode was set to data mesh, and photoreal surface overlays were turned enabled. data2.tiff : The same sample data set with different options and a different viewing angle. The only change is that the surface overlay was turned off and contour surf was turned on. This uses the "contour.slo" shader which produces contours without affecting the surrounding color. To use this option, contour.slo (located in the NXplot3d.app package) must be installed in /LocalLibrary/Shaders or in $HOME/Library/Shaders. eqn.tiff : This is a plot of the default equation used when NXplot3d starts. The 'a' parameter has been adjusted to ~-6. This plot shows off the marginally usefuly "planes" mode. It was created with the following flags: backs,ticks,labels and planes. The contour surf option was turned on, and the contour levels were set manually so the contours and the ticks occurred at the same z values. p.orbital.tiff : As the name suggests, this is a plot of the p orbitals. Each orbital is in a different color, and the contour surf option has been enabled. This was produced with 3 equation/data sets using NXplot3d's spherical harmonic function. The 3 functions displayed are: Ylm(1,0,x,y)^2, Ylm(1,-1,x,y)^2, and Ylm(1,1,x,y)^2. All 3 data sets were in Spherical mode, with monochrome coloration. The only display option enabled is axes, which appear at the origin because data set 1 is in spherical mode. d-2_f-2.morph.anim : This shows what the data mesh surface overlay looks like in spherical coordinates. This animation represents a linear morph of a d,-2 orbital to a f,-2 orbital. The equation was (1-t)*Ylm(2,-2,x,y)^2+t*Ylm(3,-2,x,y)^2. T varied from 0 to 1 over the course of the animation. Each frame took about 2-3 minutes to render. pd.morph.anim : This is similar to the last demo, except the contour surf option has been enabled and the morph is from a p to a d orbital. waves.anim : This is probably the most impressive of the data files. It looks best when played backwards (oops). It was created with the following formula: cos(sqrt(x^2+y^2)+2*pi*t)/sqrt((x)^2+y^2+1)+cos(sqrt((x+a)^2+(y+b)^2)+2*pi*t+pi/3)/sqrt((x+a)^2+(y+b)^2+1) The 2d mode was set to contour and tick mesh, floor overlays were enabled, and the following flags were used: backs, floor and labels. Automatic zmin/max updating was disabled so the scaling didn't change during the animation.
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.
