Re: Delaunay and Java3D

• To: Desiree Hilbring <hilbring@xxxxxxxxxxxxxxxxxxxx>
• Subject: Re: Delaunay and Java3D
• From: Bill Hibbard <hibbard@xxxxxxxxxxxxxxxxx>
• Date: Thu, 22 Mar 2001 12:22:38 -0600

Hi Desiree,

> I expierience often troubles with my coordinate systems.
> 
> Java3D has      x right
>                 y up
>                 z to the viewer
> 
> My world coordinates should be          x right rechts
>                                         y into the screen hoch
>                                         z up
> 
> Now I was wondering about DisplayImplJ3D.
> 
> The following is  a piece of code in my terrain-creating class, which is
> using VisAD:
> 
>         display = new DisplayImplJ3D("display1");
>         ScalarMap hoxmap = new ScalarMap(x, Display.XAxis);
>         ScalarMap reymap = new ScalarMap(y, Display.YAxis);
>         ScalarMap heightmap = new ScalarMap(height, Display.ZAxis);
> . . .
> In which direction are the Display.XAxis, Display.YAxis and Display.ZAxis
> looking of the DisplayImplJ3D?

With the default ProjectionControl matrix, XAxis, YAxis and
ZAxis are parallel to the Java3D x, y and z. So XAxis right,
YAxis up and ZAxis out of the screen.

Cheers,
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

• References:
  • Re: Delaunay and Java3D
    • From: Desiree Hilbring