Any chance I could get another helpful nudge?
Here's my embryonic hex.java - trying to display a single hexahedral cell (as 5
tetrahedra) via Irregular3DSet (this will be the case, in general).
All I see is the reference box when I run this. I'd like to display the
grid itself, then later scalar data over the grid.
thanks,
--Randy
// import needed classes
import visad.*;
import visad.java3d.DisplayImplJ3D;
import visad.util.VisADSlider;
import java.rmi.RemoteException;
import java.io.IOException;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class hex {
// type 'java cbay' to run this application
public static void main(String args[])
throws VisADException, RemoteException, IOException {
// Define vertices
float vtx[][] = new float[3][8];
int k=0;
// front face
vtx[0][k]= -0.7f; vtx[1][k]= -0.3f; vtx[2][k]= -0.5f; k++;
vtx[0][k]= 0.7f; vtx[1][k]= -0.3f; vtx[2][k]= -0.5f; k++;
vtx[0][k]= 0.7f; vtx[1][k]= 0.3f; vtx[2][k]= -0.5f; k++;
vtx[0][k]= -0.7f; vtx[1][k]= 0.3f; vtx[2][k]= -0.5f; k++;
// back face
vtx[0][k]= -0.7f; vtx[1][k]= -0.3f; vtx[2][k]= 0.5f; k++;
vtx[0][k]= 0.7f; vtx[1][k]= -0.3f; vtx[2][k]= 0.5f; k++;
vtx[0][k]= 0.7f; vtx[1][k]= 0.3f; vtx[2][k]= 0.5f; k++;
vtx[0][k]= -0.7f; vtx[1][k]= 0.3f; vtx[2][k]= 0.5f; k++;
// Define tetrahedra
// int numTetra = 5 * numHexCells;
int numTetra = 5;
int tetra[][] = new int[numTetra][4];
k=0;
tetra[k][0]=0; tetra[k][1]=2; tetra[k][2]=7; tetra[k][3]=3; k++;
tetra[k][0]=0; tetra[k][1]=2; tetra[k][2]=5; tetra[k][3]=7; k++;
tetra[k][0]=0; tetra[k][1]=5; tetra[k][2]=1; tetra[k][3]=2; k++;
tetra[k][0]=0; tetra[k][1]=5; tetra[k][2]=4; tetra[k][3]=7; k++;
tetra[k][0]=7; tetra[k][1]=2; tetra[k][2]=6; tetra[k][3]=5; k++;
Irregular3DSet set = new Irregular3DSet(
MathType.stringToType("Set(x, y, z)"),
vtx,
null, // CoordinateSystem
null, // Unit[]
null, // ErrorEstimate[]
new DelaunayCustom(vtx, tetra) );
DataReferenceImpl ref = new DataReferenceImpl("set");
ref.setData(set); // link set to ref
// create a Display using Java3D
DisplayImplJ3D display = new DisplayImplJ3D("set display");
RealTupleType tuple = ((SetType) set.getType()).getDomain();
RealType x = (RealType) tuple.getComponent(0);
RealType y = (RealType) tuple.getComponent(1);
RealType z = (RealType) tuple.getComponent(2);
display.addMap(new ScalarMap(x, Display.XAxis));
display.addMap(new ScalarMap(y, Display.YAxis));
display.addMap(new ScalarMap(z, Display.ZAxis));
display.addReference(ref); // link ref to display
// create JFrame (i.e., a window) for display and slider
JFrame frame = new JFrame("Hex Cell");
frame.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {System.exit(0);}
});
// create JPanel in JFrame
JPanel panel = new JPanel();
panel.setLayout(new BoxLayout(panel, BoxLayout.Y_AXIS));
panel.setAlignmentY(JPanel.TOP_ALIGNMENT);
panel.setAlignmentX(JPanel.LEFT_ALIGNMENT);
frame.getContentPane().add(panel);
// add slider and display to JPanel
// panel.add(slider);
panel.add(display.getComponent());
// set size of JFrame and make it visible
frame.setSize(400, 400);
frame.setVisible(true);
}
}
