public void itemStateChanged(ItemEvent event) {
Object src = event.getSource();
// Check if it is the coupled background choice
if (src == coupledBackgroundOnOffMenu) {
coupledBackgroundOnOff = coupledBackgroundOnOffMenu.getState();
if (coupledBackgroundOnOff) {
currentBackgroundColor = currentColor;
backgroundColorMenu.setCurrent(currentColor);
Color3f color = (Color3f) colors[currentColor].value;
background.setColor(color);
backgroundColorMenu.setEnabled(false);
} else {
backgroundColorMenu.setEnabled(true);
}
}
// Handle all other checkboxes
super.itemStateChanged(event);
}
//
// Handle checkboxes and menu choices
//
public void checkboxChanged(CheckboxMenu menu, int check) {
if (menu == backgroundColorMenu) {
// Change the background color
currentBackgroundColor = check;
Color3f color = (Color3f) colors[check].value;
background.setColor(color);
return;
}
if (menu == colorMenu) {
// Change the fog color
currentColor = check;
Color3f color = (Color3f) colors[check].value;
fog.setColor(color);
// If background is coupled, set the background color
if (coupledBackgroundOnOff) {
currentBackgroundColor = currentColor;
backgroundColorMenu.setCurrent(check);
background.setColor(color);
}
return;
}
if (menu == frontMenu) {
// Change the fog front distance
currentFront = check;
float front = ((Float) fronts[currentFront].value).floatValue();
fog.setFrontDistance(front);
return;
}
if (menu == backMenu) {
// Change the fog back distance
currentBack = check;
float back = ((Float) backs[currentBack].value).floatValue();
fog.setBackDistance(back);
return;
}
// Handle all other checkboxes
super.checkboxChanged(menu, check);
}
//
// Initialize the GUI (application and applet)
//
public void initialize(String[] args) {
// Initialize the window, menubar, etc.
super.initialize(args);
exampleFrame.setTitle("Java 3D LinearFog Example");
//
// Add a menubar menu to change node parameters
// Coupled background color
// Background color -->
// Fog color -->
// Fog front distance -->
// Fog back distance -->
//
Menu m = new Menu("LinearFog");
coupledBackgroundOnOffMenu =
new CheckboxMenuItem("Couple background color", coupledBackgroundOnOff);
coupledBackgroundOnOffMenu.addItemListener(this);
m.add(coupledBackgroundOnOffMenu);
backgroundColorMenu =
new CheckboxMenu("Background color", colors, currentBackgroundColor, this);
m.add(backgroundColorMenu);
backgroundColorMenu.setEnabled(!coupledBackgroundOnOff);
colorMenu = new CheckboxMenu("Fog color", colors, currentColor, this);
m.add(colorMenu);
frontMenu = new CheckboxMenu("Fog front distance", fronts, currentFront, this);
m.add(frontMenu);
backMenu = new CheckboxMenu("Fog back distance", backs, currentBack, this);
m.add(backMenu);
exampleMenuBar.add(m);
}