Re: Delaunay and Java3D

• To: Bill Hibbard <hibbard@xxxxxxxxxxxxxxxxx>
• Subject: Re: Delaunay and Java3D
• From: Desiree Hilbring <hilbring@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
• Date: Tue, 22 Aug 2000 18:08:23 +0200 (MET DST)

I will try , this, but first I have unfortunately some problems installing
VisAD:

is stored it in .../visad

my classpath is

.:/net/ipfy/hilbring/GISterm:/net/ipfy/hilbring/GISterm/jars/GIFEncoder.jar:
/net/ipfy/hilbring/GISterm/jars/NetscapeSecurity.jar:
/net/ipfy/hilbring/GISterm/jars/oracle.zip:
/net/ipfy/hilbring/GISterm/jars/png.jar:
/net/ipfy/hilbring/GISterm/jars/printf.jar:
/net/ipfy/hilbring/GISterm/jars/xml.jar:
/opt/local/java/JSDK2.0/lib/jsdk.jar:
/net/ipfy/hilbring/uisjars/gwdb.jar:/net/ipfy/hilbring/uisjars/uisfw.jar:
/net/ipfy/hilbring/GISterm/jars/x3d.jar:
/net/ipfy/hilbring/GISterm/jars/jcchart401K.jar:
/net/ipfy/hilbring/visad/visad_src-2.0.jar:/net/ipfy/hilbring/visad:
/net/ipfy/hilbring/visad/visad

content of visad is:
META-INF/            nom/                 visad_examples.jar*
edu/                 ucar/                visad_src-2.0.jar*
ncsa/                visad/

content of visad/visad is:
AVControl.class
AVControl.java
Action.class
Action.java
ActionImpl.class
ActionImpl.java
AnimationControl.class
AnimationControl.java
AnimationSetControl.class
AnimationSetControl.java
BadDirectManipulationException.class
BadDirectManipulationException.java
BadMappingException.class
BadMappingException.java
BaseColorControl.class
BaseColorControl.java
BaseQuantity.class
BaseQuantity.java
BaseUnit.class
BaseUnit.java
CMYCoordinateSystem.class
CMYCoordinateSystem.java
CartesianProductCoordinateSystem.class
CartesianProductCoordinateSystem.java
Cell.class
Cell.java
CellImpl.class
CellImpl.java
ColorAlphaControl.class
ColorAlphaControl.java
ColorControl.class
ColorControl.java
CommonUnit.class
CommonUnit.java
ConstantMap.class
ConstantMap.java
Contour2D.class
Contour2D.java
ContourControl.class
ContourControl.java
Control.class
Control.java
ControlEvent.class
ControlEvent.java
ControlListener.class
ControlListener.java
CoordinateSystem.class
CoordinateSystem.java
CoordinateSystemException.class
CoordinateSystemException.java
CylindricalCoordinateSystem.class
CylindricalCoordinateSystem.java
DATE
DEDICATION
Data.class
Data.java
DataDisplayLink.class
DataDisplayLink.java
....

but when I do make compile in visad/visad

I get the following errors over pages:
javac -J-mx32m AVControl.java
/net/ipfy/hilbring/visad/visad_src-2.0.jar(visad/VisADException.java): Public
class visad.VisADException must be defined in a file called
"VisADException.java".
/net/ipfy/hilbring/visad/visad_src-2.0.jar(visad/DataRenderer.java): Public
class visad.DataRenderer must be defined in a file called
"DataRenderer.java".
/net/ipfy/hilbring/visad/visad_src-2.0.jar(visad/ControlListener.java): Public
interface visad.ControlListener must be defined in a file called
"ControlListener.java".
3 errors
javac -J-mx32m Action.java
/net/ipfy/hilbring/visad/visad_src-2.0.jar(visad/ThingChangedListener.java): 
Public
interface visad.ThingChangedListener must be defined in a file called
"ThingChangedListener.java".
/net/ipfy/hilbring/visad/visad_src-2.0.jar(visad/VisADException.java): Public
class visad.VisADException must be defined in a file called
"VisADException.java".
/net/ipfy/hilbring/visad/visad_src-2.0.jar(visad/ThingReference.java): Public
interface visad.ThingReference must be defined in a file called
"ThingReference.java".
3 errors
....

What is wrong?

I tried additionally to run java visad.ss.SpreadSheet but the I get

Exception in thread
"main" java.lang.NoClassDefFoundError: visad/ss/SpreadSheet

Thanks for any help

Desiree




o------------------------------------------------------------------------o
| Desiree Hilbring      Institut fuer Photogrammetrie und Fernerkundung  | 
|                       Universitaet Karlsruhe, Germany                  |
|                                                                        |
|                       email: hilbring@xxxxxxxxxxxxxxxxxxxx             |
|                       # 0721 6083676                                   |
o------------------------------------------------------------------------o

On Tue, 22 Aug 2000, Bill Hibbard wrote:

> Hi Desiree,
> 
> > I am developing an Java3D Application, where I want to create a
> > terrain-surface from discrete Points. I have seen that the API from VisAD
> > includes some classes about Delaunay-Triangulation, but I do not have a
> > clue, how to use them, or if they can be helpful for me. Where can I find
> > more documentation, as in the API or even some examples?
> > Thanks for any help in advance.
> 
> Assume that the locations of your points are defined in two
> arrays:
> 
>   float[] x_locations, y_locations;
> 
> and the terrain heights at these points are defined in the
> array:
> 
>   float[] heights;
> 
> Then you can create a terrain as a FlatField like this:
> 
>   RealType x = RealType.getRealType("x");
>   RealType y = RealType.getRealType("y");
>   RealType height = RealType.getRealType("height");
>   RealTupleType xy = new RealTupleType(x, y);
>   FunctionType terrain_type = new FunctionType(xy, height);
> 
>   Irregular2DSet set
>     new Irregular2DSet(xy, new float[][] {x_locations, y_locations});
>   FlatField terrain = new FlatField(terrain_type, set);
>   terrain.setSamples(new float[][] {heights});
> 
> Note that the 'new Irregular2DSet' constructor will implicitly
> invoke one of the Delaunay constructors to compute a topology
> for your x and y locations.  You generally only need to invoke
> a Delaunay constructor explicitly when you are constructing a
> DealaunayCustom from a known topology.
> 
> Please let me know if you have questions about this.
> 
> 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: Bill Hibbard