Example usage for javax.media.j3d Sound ALLOW_INITIAL_GAIN_WRITE

Introduction

In this page you can find the example usage for javax.media.j3d Sound ALLOW_INITIAL_GAIN_WRITE.

Prototype

int ALLOW_INITIAL_GAIN_WRITE

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Document

Specifies that this node allows writing to its object's initial gain information.

Usage

From source file:ExSound.java

public Group buildScene() {
    // Get the initial sound volume
    float vol = ((Float) volumes[currentVolume].value).floatValue();

    // Turn off the example headlight
    setHeadlightEnable(false);/*from ww  w  .ja va 2 s  .  c  om*/

    // Default to walk navigation
    setNavigationType(Walk);

    // Build the scene group
    Group scene = new Group();

    //
    // Preload the sounds
    //
    if (debug)
        System.err.println("  sounds...");
    String path = getCurrentDirectory();
    MediaContainer backgroundMedia = new MediaContainer(path + "canon.wav");
    backgroundMedia.setCacheEnable(true);

    MediaContainer pointMedia = new MediaContainer(path + "willow1.wav");
    pointMedia.setCacheEnable(true);

    // BEGIN EXAMPLE TOPIC
    // Create influencing bounds
    BoundingSphere worldBounds = new BoundingSphere(new Point3d(0.0, 0.0, 0.0), // Center
            1000.0); // Extent

    // Background sound
    backgroundSound = new BackgroundSound();
    backgroundSound.setEnable(backgroundSoundOnOff);
    backgroundSound.setLoop(Sound.INFINITE_LOOPS);
    backgroundSound.setSoundData(backgroundMedia);
    backgroundSound.setInitialGain(vol);
    backgroundSound.setSchedulingBounds(worldBounds);
    backgroundSound.setCapability(Sound.ALLOW_ENABLE_WRITE);
    backgroundSound.setCapability(Sound.ALLOW_INITIAL_GAIN_WRITE);
    scene.addChild(backgroundSound);

    // Create a distance gain array for the point sound
    Point2f[] distanceGain = { new Point2f(9.0f, 1.0f), // Full volume
            new Point2f(10.0f, 0.5f), // Half volume
            new Point2f(20.0f, 0.25f), // Quarter volume
            new Point2f(30.0f, 0.0f), // Zero volume
    };

    // Point sound
    pointSound = new PointSound();
    pointSound.setEnable(pointSoundOnOff);
    pointSound.setPosition(new Point3f(pointX, soundHeight, 0.0f));
    pointSound.setLoop(Sound.INFINITE_LOOPS);
    pointSound.setSoundData(pointMedia);
    pointSound.setInitialGain(vol);
    pointSound.setDistanceGain(distanceGain);
    pointSound.setSchedulingBounds(worldBounds);
    pointSound.setCapability(Sound.ALLOW_ENABLE_WRITE);
    pointSound.setCapability(Sound.ALLOW_INITIAL_GAIN_WRITE);
    scene.addChild(pointSound);
    // END EXAMPLE TOPIC

    // Build a few lights, one per sound. We'll turn them
    // on when the associated sound is on.
    ambientLight = new AmbientLight();
    ambientLight.setEnable(backgroundSoundOnOff);
    ambientLight.setColor(Gray);
    ambientLight.setInfluencingBounds(worldBounds);
    ambientLight.setCapability(Light.ALLOW_STATE_WRITE);
    scene.addChild(ambientLight);

    pointLight = new PointLight();
    pointLight.setEnable(pointSoundOnOff);
    pointLight.setColor(White);
    pointLight.setPosition(0.0f, soundHeight, 0.0f);
    pointLight.setInfluencingBounds(worldBounds);
    pointLight.setCapability(Light.ALLOW_STATE_WRITE);
    scene.addChild(pointLight);

    // Add a basic ambient light for when all sounds (and
    // their lights) are off so that the world isn't dark
    AmbientLight amb = new AmbientLight();
    amb.setEnable(true);
    amb.setColor(Gray);
    amb.setInfluencingBounds(worldBounds);
    amb.setCapability(Light.ALLOW_STATE_WRITE);
    scene.addChild(amb);

    // Build foreground geometry
    scene.addChild(buildForeground());

    return scene;
}

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