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An example of stepwise color tables with VisAD
//
// SolidColors.java
//
// An example of stepwise color tables with VisAD.
import java.awt.Color;
import java.awt.Component;
import java.rmi.RemoteException;
import javax.swing.BoxLayout;
import javax.swing.JFrame;
import javax.swing.JSplitPane;
import visad.*;
import visad.util.ColorMapWidget;
import visad.util.LabeledColorWidget;
import visad.java3d.DisplayImplJ3D;
public class SolidColors {
public SolidColors()
throws RemoteException, VisADException
{
DisplayImpl dpy = setupDisplay();
setupData(dpy);
setupColorTable(dpy);
setupUI(dpy);
}
DisplayImpl setupDisplay()
throws RemoteException, VisADException
{
return new DisplayImplJ3D("display");
}
void setupData(LocalDisplay dpy)
throws RemoteException, VisADException
{
RealType[] types = {RealType.Latitude, RealType.Longitude};
RealTupleType earth_location = new RealTupleType(types);
RealType vis_radiance = RealType.getRealType("vis_radiance");
RealType ir_radiance = RealType.getRealType("ir_radiance");
RealType[] types2 = {vis_radiance, ir_radiance};
RealTupleType radiance = new RealTupleType(types2);
FunctionType image_tuple = new FunctionType(earth_location, radiance);
int size = 32;
FlatField imaget1 = FlatField.makeField(image_tuple, size, false);
dpy.addMap(new ScalarMap(RealType.Latitude, Display.YAxis));
dpy.addMap(new ScalarMap(RealType.Longitude, Display.XAxis));
dpy.addMap(new ScalarMap(vis_radiance, Display.ZAxis));
dpy.addMap(new ScalarMap(ir_radiance, Display.RGB));
GraphicsModeControl mode = dpy.getGraphicsModeControl();
mode.setTextureEnable(false);
DataReferenceImpl ref_imaget1 = new DataReferenceImpl("ref_imaget1");
ref_imaget1.setData(imaget1);
dpy.addReference(ref_imaget1, null);
}
void setupColorTable(LocalDisplay dpy)
throws RemoteException, VisADException
{
ScalarMap colorMap = (ScalarMap) dpy.getMapVector().lastElement();
ColorControl control = (ColorControl) colorMap.getControl();
float[][] lut = new float[3][256];
Color[] colors = {
Color.red, Color.blue, Color.green, Color.yellow, Color.magenta
};
int index = 0;
for (int c=0; c<colors.length; c++) {
int minIndex = c * 256 / colors.length;
int maxIndex = (c + 1) * 256 / colors.length;
for (int i=minIndex; i<maxIndex; i++) {
lut[0][i] = colors[c].getRed() / 255f;
lut[1][i] = colors[c].getGreen() / 255f;
lut[2][i] = colors[c].getBlue() / 255f;
}
}
control.setTable(lut);
}
void setupUI(LocalDisplay dpy)
throws RemoteException, VisADException
{
ScalarMap colorMap = (ScalarMap) dpy.getMapVector().lastElement();
LabeledColorWidget widget =
new LabeledColorWidget(new ColorMapWidget(colorMap, false));
JFrame frame = new JFrame("Solid Colors Example");
JSplitPane pane = new JSplitPane(JSplitPane.VERTICAL_SPLIT);
frame.setContentPane(pane);
pane.add(dpy.getComponent());
pane.add(widget);
frame.pack();
pane.setDividerLocation(0.70);
frame.setVisible(true);
}
public static void main(String[] args)
throws RemoteException, VisADException
{
new SolidColors();
}
}
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