Re: your mail

• To: d-nguyen@xxxxxxxxxxxxxxxx
• Subject: Re: your mail
• From: "From: Bill Hibbard <hibbard@xxxxxxxxxxxxxxxxx>" <billh@xxxxxxxxxxxxx>
• Date: Sun, 23 Dec 2001 09:16:23 -0600 (CST)

Hi Dave, and thanks Mathias for pointing out the MathTypes,

With a MathType of (index -> (x, y, z, value)) your data
are displayed as discrete points, and transparency does
not apply to point displays (this is a property of Java3D).

Transparency only works for surfaces (trianlges or quads),
not for points or lines.

You may be able to reorganize your MathTypes.

Happy holidays,
Bill
----------------------------------------------------------
Bill Hibbard, SSEC, 1225 W. Dayton St., Madison, WI  53706
hibbard@xxxxxxxxxxxxxxxxx  608-263-4427  fax: 608-263-6738
http://www.ssec.wisc.edu/~billh/vis.html


On Sat, 22 Dec 2001 d-nguyen@xxxxxxxxxxxxxxxx wrote:

> Bill, Matthias, 
> 
> Thanks for both of your suggestions. I have tried those and it seems like I 
> cannot affect the transparency of these particles. 
> 
> I have tried creating a table with the ColorAlphaControl. I have also tried 
> using constantMaps. I have tried using the LabeledColorWidget but I do not 
> see 
> a line for transparency. Nor did I see one when I ran Test20 as suggested. 
> 
> I'm pretty sure it is not a problem with my system configuration since 
> example 
> P4_06 from Ugo's tutorial seems to work fine. 
> 
> I have attached some files below if anyone could possible look at these. I 
> would appreciate any feedback. 
> 
> particle_temperature_32.dat is a data file. 
> readdata.java prints out point coordinate and values from data files. Run it 
> by 
> calling java readdata 32 particle_temperature_32.dat. 
> partplot.java is the program I am trying to get working. Run it by calling 
> java 
> partplot 32 particle_temperature_32.dat 
> 
> Thanks for any help, 
> -dave 
> 
> > 
> > 
> > Hi Dave, 
> > 
> > Try replacing the two ScalarMaps to RGB amd to Alpha, 
> > with one Sca;arMap to RGBA. See visad/examples/Test20.java 
> > for an example. You can either use a LabeledColorWidget 
> > to set the color table interactively, or you can get the 
> > ColorAlphaControl and call its setTable(float[][] table) 
> > method where table is [4][table_length]. 
> > 
> > Happy Holidays, 
> > Bill 
> > ---------------------------------------------------------- 
> > Bill Hibbard, SSEC, 1225 W. Dayton St., Madison, WI  53706 
> > hibbard@xxxxxxxxxxxxxxxxx  608-263-4427  fax: 608-263-6738 
> > http://www.ssec.wisc.edu/~billh/vis.html 
> > 
> > 
> > On Fri, 21 Dec 2001 d-nguyen@xxxxxxxxxxxxxxxx wrote: 
> > 
> > > Hello, 
> > > 
> > > I am trying to add transparency to my program. It's currently set up like 
> this: 
> > > 
> > > (index)->(x, y, z, value) 
> > > 
> > > and I have Maps added as such 
> > > 
> > > display.addMap( new ScalarMap( x, Display.XAxis ) ); 
> > > display.addMap( new ScalarMap( y, Display.YAxis ) ); 
> > > display.addMap( new ScalarMap( z, Display.ZAxis ) ); 
> > > display.addMap( new ScalarMap( value, Display.RGB ) ); 
> > > display.addMap( new ScalarMap( value, Display.Alpha ) ); 
> > > 
> > > But it does not seem to be working. I am currently running Java3D OpenGl 
> > > version. 
> > > 
> > > The value data set ranges from 0 to about 3,000 with the majority of the 
> values 
> > > being near 1. I would like it so that the lower the value, the more 
> transparent 
> > > it is so that those near the higher end stands out and is not hidden by 
> > > the 
> > > "cloud" of lower level particles. 
> > > 
> > > Any ideas? 
> > > 
> > > Thanks everyone, 
> > > -dave 
> > > 
> > > 
> > 
> > 
> 

• References:
  • Re: your mail
    • From: 8.9.3/8.9.3