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Oops...forgot to add the code.
=====================================================
import visad.*;
import visad.java2d.DisplayImplJ2D;
import visad.java3d.*;
import java.rmi.RemoteException;
import javax.swing.*;
import java.io.*;
import visad.java2d.*;
import javax.media.j3d.*;
public class MouseCreateGeometry3 extends Object {
RealType row, column, index;
RealTupleType domain_tuple;
Gridded2DSet grid2d;
GridCoordinateSystem grid_coord;
FlatField vals_ff;
DisplayImplJ2D display;
ScalarMap rowMap, colMap, indexMap;
DataReferenceImpl data_ref;
DisplayRenderer dr;
Gridded2DSet gf1;
Gridded2DSet gf2;
int nverts;
DataReference data_ref1;
UnionSet us;
RealTuple rt1[];
float frt1, frt2, frtt1, frtt2;
Data[] drt1, drt2;
RealTuple rt;
float line1[][] = new float[2][2];
float line2[][] = new float[2][2];
/** Creates new MouseCreateGeometry3 */
public MouseCreateGeometry3() {
}
public void displayGrid() throws RemoteException,
VisADException {
row = new RealType("X", null, null);
column = new RealType("Y", null, null);
FunctionType ftype = new FunctionType(row,
column);
domain_tuple = new RealTupleType(row, column);
int size = 64;
FlatField flatfield
FlatField.makeField(ftype, size, false);
display = new DisplayImplJ2D("display1");
dr = display.getDisplayRenderer();
dr.setBoxOn(false);
display.addMap(new ScalarMap(row,
Display.XAxis));
display.addMap(new ScalarMap(column,
Display.YAxis));
GraphicsModeControl dispGMC
(GraphicsModeControl)
display.getGraphicsModeControl();
float flat_samples[][] = new float[][] {{0, 1,
1, 0, 0 },
{0, 0,
1, 1, 0 }};
DataReferenceImpl dt = new
DataReferenceImpl("d_ref");
final Gridded2DSet[] g = new Gridded2DSet[4];
final DataReferenceImpl dr[] = new
DataReferenceImpl[4];
rt1 = new RealTuple[4];
ConstantMap[] pointsCol = { new
ConstantMap( 1.0f, Display.Red),
new ConstantMap( 0.0f, Display.Green),
new ConstantMap( 0.0f, Display.Blue),
new ConstantMap( 5.0f,
Display.PointSize)};
float f1[][] = new float[2][2];
nverts = 4;
data_ref1 = new DataReferenceImpl("data");
for(int i = 0; i < 4; i++) {
f1[0][0] = flat_samples[0][i];
f1[1][0] = flat_samples[1][i];
f1[0][1] = flat_samples[0][i+1];
f1[1][1] = flat_samples[1][i+1];
g[i] = new Gridded2DSet(domain_tuple, f1,
2);
Real r1[] = new Real[] { new Real(row,
flat_samples[0][i]), new Real(column,
flat_samples[1][i]) };
rt1[i] = new RealTuple(r1);
dr[i] = new
DataReferenceImpl("ref_direct");
dr[i].setData(rt1[i]);
final int n = i;
display.addReferences( new
DirectManipulationRendererJ2D(), dr[i], pointsCol);
CellImpl cell = new CellImpl() {
private boolean first = true;
public void doAction() throws
VisADException, RemoteException {
if (first) first = false;
else {
rt = (RealTuple) dr[n].getData();
Data[] d = rt.getComponents();
if(n == 0) {
gf1 = g[n];
gf2 = g[nverts-1];
drt1 = rt1[1].getComponents();
frt1 = (new
Double(drt1[0].toString())).floatValue();
frt2 = (new
Double(drt1[1].toString())).floatValue();
drt2
rt1[nverts-1].getComponents();
frtt1 = (new
Double(drt2[0].toString())).floatValue();
frtt2 = (new
Double(drt2[1].toString())).floatValue();
} else if(n == (nverts-1)) {
drt1 = rt1[0].getComponents();
frt1 = (new
Double(drt1[0].toString())).floatValue();
frt2 = (new
Double(drt1[1].toString())).floatValue();
drt2
rt1[(nverts-1)-1].getComponents();
frtt1 = (new
Double(drt2[0].toString())).floatValue();
frtt2 = (new
Double(drt2[1].toString())).floatValue();
} else {
gf1 = g[n];
gf2 = g[n-1];
drt1
rt1[n+1].getComponents();
frt1 = (new
Double(drt1[0].toString())).floatValue();
frt2 = (new
Double(drt1[1].toString())).floatValue();
drt2
rt1[n-1].getComponents();
frtt1 = (new
Double(drt2[0].toString())).floatValue();
frtt2 = (new
Double(drt2[1].toString())).floatValue();
}
float pt1[] = new float[2];
float pt2[] = new float[2];
pt1[0] = frt1;
pt1[1] = frt2;
pt2[0] = frtt1;
pt2[1] = frtt2;
line1[0][0] = pt1[0];
line1[0][1] = (new
Double(d[0].toString())).floatValue();
line1[1][0] = pt1[1];
line1[1][1] = (new
Double(d[1].toString())).floatValue();
line2[0][0] = pt2[0];
line2[0][1] = (new
Double(d[0].toString())).floatValue();
line2[1][0] = pt2[1];
line2[1][1] = (new
Double(d[1].toString())).floatValue();
// System.out.println("ln1 : " +
"x1: " + line1[0][0] + " x2: " +line1[0][1] + " y1:
" + line1[1][0]+ " y2: " + line1[1][1] );
// System.out.println("ln2 : " +
"x1: " +line2[0][0] + " x2: " +line2[0][1] + " y1: "
+ line2[1][0]+ " y2: " + line2[1][1] );
gf1 = new
Gridded2DSet(domain_tuple, line1, 2);
gf2 = new
Gridded2DSet(domain_tuple, line2, 2);
Gridded2DSet[] gsd = { gf1, gf2 };
us = new UnionSet(domain_tuple,
gsd);
data_ref1.setData(us);
}
}
};
cell.addReference(dr[i]);
}
UnionSet u_set = new UnionSet(g);
dt.setData(u_set);
display.addReference( dt);
display.addReference(data_ref1);
JFrame jframe = new JFrame("2D Grid");
jframe.getContentPane().add(display.getComponent());
jframe.setSize(300, 300);
jframe.setVisible(true);
jframe.addWindowListener(new
java.awt.event.WindowAdapter() {
public void
windowClosing(java.awt.event.WindowEvent evt) {
System.exit(0);
}
}
);
}
public static void main(String[] args) {
MouseCreateGeometry3 g = new
MouseCreateGeometry3();
try {
g.displayGrid();
} catch (Exception e) {
e.printStackTrace();
}
}
}
======================================================
thanks
karan
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