Example usage for javax.media.j3d DistanceLOD DistanceLOD

Introduction

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

Prototype

public DistanceLOD(float[] distances) 

Source Link

Document

Constructs and initializes a DistanceLOD node with the specified array of distances and a default position of (0,0,0).

Usage

From source file:LOD.java

public BranchGroup createSceneGraph() {
    // Create the root of the branch graph
    BranchGroup objRoot = new BranchGroup();

    createLights(objRoot);//from  ww  w .  j  a  v  a2  s.c o m

    // Create the transform group node and initialize it to the
    // identity. Enable the TRANSFORM_WRITE capability so that
    // our behavior code can modify it at runtime. Add it to the
    // root of the subgraph.
    TransformGroup objTrans = new TransformGroup();
    objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
    objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
    objRoot.addChild(objTrans);

    // Create a switch to hold the different levels of detail
    Switch sw = new Switch(0);
    sw.setCapability(javax.media.j3d.Switch.ALLOW_SWITCH_READ);
    sw.setCapability(javax.media.j3d.Switch.ALLOW_SWITCH_WRITE);

    // Create several levels for the switch, with less detailed
    // spheres for the ones which will be used when the sphere is
    // further away
    sw.addChild(new Sphere(0.4f, Sphere.GENERATE_NORMALS, 40));
    sw.addChild(new Sphere(0.4f, Sphere.GENERATE_NORMALS, 20));
    sw.addChild(new Sphere(0.4f, Sphere.GENERATE_NORMALS, 10));
    sw.addChild(new Sphere(0.4f, Sphere.GENERATE_NORMALS, 3));

    // Add the switch to the main group
    objTrans.addChild(sw);

    BoundingSphere bounds = new BoundingSphere(new Point3d(0.0, 0.0, 0.0), 100.0);

    // set up the DistanceLOD behavior
    float[] distances = new float[3];
    distances[0] = 5.0f;
    distances[1] = 10.0f;
    distances[2] = 25.0f;
    DistanceLOD lod = new DistanceLOD(distances);
    lod.addSwitch(sw);
    lod.setSchedulingBounds(bounds);
    objTrans.addChild(lod);

    // Have Java 3D perform optimizations on this scene graph.
    objRoot.compile();

    return objRoot;
}

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From source file:SplineInterpolatorTest.java

public Group createLodLand(Group g) {
    Switch switchNode = new Switch();
    switchNode.setCapability(Switch.ALLOW_SWITCH_WRITE);

    Group hiResGroup = createLand(switchNode);
    createEnvirons(switchNode);//www. j a  v a2 s  .  co m

    // create a DistanceLOD that will select the child of
    // the Switch node based on distance. Here we are selecting
    // child 0 (high res) if we are closer than 180 units to
    // 0,0,0 and child 1 (low res) otherwise.
    float[] distanceArray = { 180 };

    DistanceLOD distanceLod = new DistanceLOD(distanceArray);
    distanceLod.setSchedulingBounds(getApplicationBounds());
    distanceLod.addSwitch(switchNode);

    g.addChild(distanceLod);
    g.addChild(switchNode);

    return hiResGroup;
}

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