Java Alpha类代码示例

import javax.media.j3d.Alpha; //导入依赖的package包/类
/**
 * Génère la représentation
 * @param feat
 * @param time
 * @param tMinLayer
 * @param tMaxLayer
 * @param alpha
 * @param b
 */
private void generation(IFeature feat, List<Double> time, double tMinLayer,
    double tMaxLayer, Alpha alpha, BranchGroup b) {

  this.feat = feat;
  // On génère des informations relatives à l'objet tMin et tMax

  int nbT = time.size();
  this.tMin = Double.POSITIVE_INFINITY;
  this.tMax = Double.NEGATIVE_INFINITY;
  for (int i = 0; i < nbT; i++) {
    if (time.get(i) > this.tMax) {
      this.tMax = time.get(i);
    }
    if (time.get(i) < this.tMin) {
      this.tMin = time.get(i);
    }

  }

  this.bGRep.addChild(this.generateBG(feat.getGeom().coord(), time,
      tMinLayer, tMaxLayer, alpha, b));

  this.bGRep.compile();

}
 

import javax.media.j3d.Alpha; //导入依赖的package包/类
private RotationInterpolator makeSpin(TransformGroup spinner) {
    //Alpha alpha = new Alpha(1, Alpha.DECREASING_ENABLE, 0, 10000, 5000, 0, 1000, 5000, 0, 1000);
    Alpha alpha = new Alpha(1, 3000);//new Alpha(-1, 10000) set speed here
    alpha.setAlphaAtOneDuration(3000);
    alpha.setIncreasingAlphaRampDuration(500);
    alpha.setMode(Alpha.INCREASING_ENABLE);

    rotator = new RotationInterpolator(alpha, spinner);
    double rot = Math.toRadians(90);
    Transform3D rotate1 = new Transform3D();
    rotate1.rotX(rot);
    rotate1.setTranslation(new Vector3f(0.3f, 0.3f, 0.0f));
    rotator.setTransformAxis(rotate1);
    rotator.setSchedulingBounds(bounds);
    return rotator;
}
 

import javax.media.j3d.Alpha; //导入依赖的package包/类
/**
 * Creates a scene graph for the 3D model, translates the model on the
 * y-axis by {@code MODEL_Y_POSITION} and sets the rotation.
 * 
 * @return a BranchGroup for the 3D model.
 */
private BranchGroup createSceneGraph() {
	BranchGroup objRoot = new BranchGroup();
	TransformGroup objTrans = new TransformGroup();
	objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
	objRoot.addChild(objTrans);
	// Move the shape down on the y-axis
	TransformGroup moveDownGroup = new TransformGroup();
	Transform3D moveDownTrans = new Transform3D();
	moveDownTrans.setTranslation(new Vector3f(0, MODEL_Y_POSITION, 0));
	moveDownGroup.setTransform(moveDownTrans);
	objTrans.addChild(moveDownGroup);
	moveDownGroup.addChild(this.shape3d);
	// Rotate the shape
	Transform3D yAxis = new Transform3D();
	Alpha rotationAlpha = new Alpha(-1, ROTATION_ALPHA_DURATION);
	RotationInterpolator rotator = new RotationInterpolator(rotationAlpha, objTrans, yAxis, 0, (float) Math.PI * 2.0f);
	BoundingSphere bounds = new BoundingSphere(new Point3d(0, 0, 0), ROTATOR_SPHERE_RADIUS);
	rotator.setSchedulingBounds(bounds);
	objRoot.addChild(rotator);
	objRoot.compile();
	return objRoot;
}
 

import javax.media.j3d.Alpha; //导入依赖的package包/类
/**
 * Génère les objets Java3D
 * @param duree durée en seconde de la simulation
 * @param path chemin d'un fichier (si nécessaire)
 * @param size informations de taille
 * @param representationMode mode de représentation
 */
private void generateStyle(int duree, String path, double size,
    int representationMode, double rotX, double rotY, double rotZ) {
  int nbElem = this.collection.size();
  // Alpha correspond au temps nécessaire pour faire un parcours
  this.alpha = new Alpha(-1, duree * 1000);
  for (int i = 0; i < nbElem; i++) {
    IFeature feat = this.collection.get(i);
    feat.setRepresentation(new Object4d(feat, this.time.get(i), this.tMin,
        this.tMax, this.alpha, path, size, representationMode, rotX, rotY,
        rotZ));

  }
}
 

import javax.media.j3d.Alpha; //导入依赖的package包/类
public static void main(String input[])
{
	VolumeViewerPanel vol = new VolumeViewerPanel();
	FrameFactroy.getFrame(vol);
	// just after canvas and universe creation
	generateVideo(vol.getRender().getCanvas(), vol.getRender()
			.getUniverse(), 10000, new Alpha(), new File(
			"c:\\test\\movie.avi"), 30, 600, 480);

}
 

import javax.media.j3d.Alpha; //导入依赖的package包/类
/**
 * �V�[�����\�z����
 * @return BG
 */
public BranchGroup createSceneGraph() {
    BranchGroup bg = new BranchGroup();

    // ��]�pTG
    TransformGroup spinTG = new TransformGroup();
    spinTG.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);

    // ��]�^��
    Alpha rotationAlpha = new Alpha(-1, 4000);
    RotationInterpolator rotator = new RotationInterpolator(rotationAlpha,
            spinTG);

    // �͈͂��w��
    BoundingSphere bounds = new BoundingSphere();
    rotator.setSchedulingBounds(bounds);

    spinTG.addChild(rotator);

    // �g���C�t�H�[�X
    Triforce triforce = new Triforce();
    spinTG.addChild(triforce.getBG()); // spinTG�ɒlj��I

    bg.addChild(spinTG);

    return bg;
}
 

import javax.media.j3d.Alpha; //导入依赖的package包/类
public BranchGroup createSceneGraph() {
    BranchGroup bg = new BranchGroup();

    // �L���[�u���X����
    Transform3D rotate = new Transform3D();
    Transform3D tempRotate = new Transform3D();

    rotate.rotX(Math.PI / 4.0);
    tempRotate.rotY(Math.PI / 4.0);
    rotate.mul(tempRotate);

    TransformGroup rotateTG = new TransformGroup(rotate);

    // �L���[�u����]����
    TransformGroup spinTG = new TransformGroup();
    spinTG.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
    // �J���[�L���[�u���쐬����spinTG�ɒlj�
    ColorCube cube = new ColorCube(0.4);
    spinTG.addChild(cube);

    // ��]�^��
    Alpha rotationAlpha = new Alpha(-1, 4000);
    RotationInterpolator rotator = new RotationInterpolator(rotationAlpha, spinTG);
    // �͈͂��w��
    BoundingSphere bounds = new BoundingSphere();
    rotator.setSchedulingBounds(bounds);
    spinTG.addChild(rotator);

    rotateTG.addChild(spinTG);
    bg.addChild(rotateTG);

    return bg;
}
 

import javax.media.j3d.Alpha; //导入依赖的package包/类
/**
 * Create a group componsed of a sphere and different transform group + a hostname label
 * @param root where adding the "sphere group" in 3D scene
 * @param i body to represent
 * @param a appearance of the sphere which represent the body
 */
private void createPlanete(BranchGroup root, int i, Appearance a) {
    // Creation of the Root Animation Node of the planet
    TransformGroup planeteAnimationGroup = new TransformGroup();
    planeteAnimationGroup.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
    translationsGroup[i] = planeteAnimationGroup;

    // Allow to Translate the Node of the planet
    Transform3D translationPlanete = new Transform3D();
    translations[i] = translationPlanete;

    // Creating floating hostname label near the planet
    BranchGroup lGroup = new BranchGroup();
    lGroup.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
    lGroup.setCapability(TransformGroup.ALLOW_CHILDREN_EXTEND);
    lGroup.setCapability(TransformGroup.ALLOW_CHILDREN_WRITE);
    labels[i] = lGroup;

    // Rotation of the planet on itself
    TransformGroup planeteRotationGroup = new TransformGroup();
    planeteRotationGroup.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
    Alpha planeteRotationAlpha = new Alpha(-1, 4000);
    RotationInterpolator rotator = new RotationInterpolator(planeteRotationAlpha, planeteRotationGroup);
    rotator.setSchedulingBounds(new BoundingSphere(new Point3d(0, 0, 0), 999999999));
    planetesScalingGroup[i] = planeteRotationGroup;

    // Allow to change the Scale of the sphere representing the planet
    Transform3D planeteScaling = new Transform3D();
    planeteRotationGroup.setTransform(planeteScaling);
    planetesScaling[i] = planeteScaling;

    // Creation of the sphere representing the planete
    Sphere planete = new Sphere(0.01f, Sphere.GENERATE_NORMALS, 80, a);

    // Assembling java3D nodes
    planeteRotationGroup.addChild(planete);
    planeteAnimationGroup.addChild(lGroup);
    planeteAnimationGroup.addChild(planeteRotationGroup);
    root.addChild(planeteAnimationGroup);
}
 

import javax.media.j3d.Alpha; //导入依赖的package包/类
public static void generateVideo(Canvas3D canvas3D, SimpleUniverse universe, long animationTime, Alpha alpha, File outputFile, int fps, int width, int height)
{

	/* Initializing the animation */
	long startTime = alpha.getStartTime();
	alpha.pause(startTime);

	/* Milliseconds it takes to change the frame. */
	long msFrame = (long) (((float) 1 / fps) * 1000);

	/* Frames you need to create the movie */
	long framesNeeded = animationTime / msFrame;

	/* Create an offscreen canvas from where you'll get the image */
	ScreenShot screenShot = new ScreenShot(canvas3D, universe, 1f);
	// canvas3D.getView().addCanvas3D(screenShot);

	/*
	 * CREATE FRAMES
	 */
	String tempDir = "c:\\test\\";
	String name = "img_";
	String fileType = "jpg";

	File fTempDir = new File(tempDir);

	Vector<File> vFiles = new Vector<File>();

	System.gc();
	BufferedImage image = new BufferedImage(width, height,
			BufferedImage.TYPE_INT_RGB);
	for (long frameCount = 0; frameCount <= framesNeeded; frameCount++)
	{
		/* Stop the animation in the correct position */
		long time = startTime + frameCount * msFrame;
		alpha.pause(time);

		/* Get the renderized image at that moment */
		BufferedImage bi = screenShot.doRender(image);

		/* Create a JPEG file from the renderized image */
		String tempName = name + frameCount;
		File file = new File(fTempDir, tempName + "." + fileType);
		try
		{
			ImageIO.write(bi, fileType, file);
		} catch (IOException ex)
		{
			ex.printStackTrace();
			return;
		}

		vFiles.add(file);
	}

	// /*
	// * GENERATE VIDEO
	// */
	//
	// int frameRate = (int) ((framesNeeded + 1) / (animationTime / 1000));
	//
	// File[] files = vFiles.toArray(new File[0]);
	//
	// try
	// {
	// MovieMaker movieMaker = new MovieMaker(width, height, frameRate,
	// outputFile, files);
	//
	// movieMaker.makeMovie();
	// } catch (Exception ex)
	// {
	// ex.printStackTrace();
	// }
}
 

import javax.media.j3d.Alpha; //导入依赖的package包/类
public void makeVideo() {
    MovieMaker.generateVideo(canvas3D, simpleUniverse, 10000, // Animation time in msec
            new Alpha(-1, 32000), new File("MovieDensNuc.mov"), 15, 1920, 1200);

}
 

import javax.media.j3d.Alpha; //导入依赖的package包/类
private TransformGroup getRotation() {

        /*
         * Create a TransformGroup to rotate the objects in the scene
         * and set the capability bits on the TransformGroup so that
         * it can be modified at runtime by the rotation behavior.
         */
        TransformGroup objTrans = new TransformGroup();
        objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
        objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);

        //Create a spherical bounding volume that will define the volume
        //within which the rotation behavior is active.
        BoundingSphere bounds = new BoundingSphere(
                new Point3d(0.0, 0.0, 0.0), 100.0);

        //Create a 4 × 4 transformation matrix
        Transform3D yAxis = new Transform3D();
        double rot = Math.toRadians(90);
        yAxis.rotZ(rot);

        /*
         * Create an Alpha interpolator to automatically generate
         * modifications to the rotation component of the transformation
         * matrix. This Alpha loops indefinitely and generates numbers
         * from 0 to 1 every 4000 milliseconds.
         */
        /*
         Alpha rotationAlpha = new Alpha(-1, Alpha.INCREASING_ENABLE,
         0, 0,
         32000, 0, 0,
         0, 0, 0);
         *
         */

        Alpha rotationAlpha = new Alpha(-1, 0);
        /*
         * Create a RotationInterpolator behavior to effect the
         * TransformGroup. Here we will rotate from 0 to 2p degrees about
         * the Y-axis based on the output of rotationAlpha.
         */
        rotator = new RotationInterpolator(rotationAlpha,
                objTrans, yAxis, 0.0f,
                (float) Math.PI * 2.0f);

        //Set the scheduling bounds on the behavior. This defines the
        //volume within which this behavior will be active.
        rotator.setSchedulingBounds(bounds);

        //Add the behavior to the scenegraph so that Java 3D
        //can schedule it for activation.
        objTrans.addChild(rotator);
        return objTrans;
    }
 

import javax.media.j3d.Alpha; //导入依赖的package包/类
private TransformGroup getRotation() {

        /*
         * Create a TransformGroup to rotate the objects in the scene
         * and set the capability bits on the TransformGroup so that
         * it can be modified at runtime by the rotation behavior.
         */
        TransformGroup objTrans = new TransformGroup();
        objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
        objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);

        //Create a spherical bounding volume that will define the volume
        //within which the rotation behavior is active.
        BoundingSphere bounds = new BoundingSphere(
                new Point3d(0.0, 0.0, 0.0), 100.0);

        //Create a 4 × 4 transformation matrix
        Transform3D yAxis = new Transform3D();
        double rot = Math.toRadians(90);
        yAxis.rotZ(rot);

        /*
         * Create an Alpha interpolator to automatically generate
         * modifications to the rotation component of the transformation
         * matrix. This Alpha loops indefinitely and generates numbers
         * from 0 to 1 every 4000 milliseconds.
         */
        /*
        Alpha rotationAlpha = new Alpha(-1, Alpha.INCREASING_ENABLE,
        0, 0,
        32000, 0, 0,
        0, 0, 0);
         *
         */

        Alpha rotationAlpha = new Alpha(-1, 0);
        /*
         * Create a RotationInterpolator behavior to effect the
         * TransformGroup. Here we will rotate from 0 to 2p degrees about
         * the Y-axis based on the output of rotationAlpha.
         */
        rotator = new RotationInterpolator(rotationAlpha,
                objTrans, yAxis, 0.0f,
                (float) Math.PI * 2.0f);

        //Set the scheduling bounds on the behavior. This defines the
        //volume within which this behavior will be active.
        rotator.setSchedulingBounds(bounds);

        //Add the behavior to the scenegraph so that Java 3D
        //can schedule it for activation.
        objTrans.addChild(rotator);
        return objTrans;
    }