Example usage for javax.media.j3d CompressedGeometry getCompressedGeometryHeader

Introduction

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

Prototype

public void getCompressedGeometryHeader(CompressedGeometryHeader hdr) 

Source Link

Document

Copies the compressed geometry header from the CompressedGeometry NodeComponent into the passed in parameter.

Usage

From source file:cgview.java

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

    // Create a Transformgroup to scale all objects so they
    // appear in the scene.
    TransformGroup objScale = new TransformGroup();
    Transform3D t3d = new Transform3D();
    t3d.setScale(0.7);//from  w  w  w . ja  va  2s . co m
    objScale.setTransform(t3d);
    objRoot.addChild(objScale);

    // 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);
    objScale.addChild(objTrans);

    // Add compressed geometry to the scene graph.
    CompressedGeometryHeader hdr = new CompressedGeometryHeader();
    cg.getCompressedGeometryHeader(hdr);

    // There isn't really enough information in the compressed geometry
    // header to unamiguously determine the proper rendering attributes.
    // The bufferDataPresent field specifies whether or not normals are
    // bundled with vertices, but the compressed buffer can still contain
    // normals that should be lit. Assume that any surface geometry
    // should be lit and that lines and points should not unless the
    // header contains the NORMAL_IN_BUFFER bit.
    Material m = new Material();
    if ((hdr.bufferType == hdr.TRIANGLE_BUFFER) || ((hdr.bufferDataPresent & hdr.NORMAL_IN_BUFFER) == 1))
        m.setLightingEnable(true);
    else
        m.setLightingEnable(false);

    Appearance a = new Appearance();
    a.setMaterial(m);

    objTrans.addChild(new Shape3D(cg, a));

    // Create mouse behavior scheduling bounds.
    BoundingSphere bounds = new BoundingSphere(new Point3d(0.0, 0.0, 0.0), 100.0);

    // Set up the background
    Color3f bgColor = new Color3f(0.05f, 0.05f, 0.5f);
    Background bgNode = new Background(bgColor);
    bgNode.setApplicationBounds(bounds);
    objRoot.addChild(bgNode);

    // Set up the ambient light
    Color3f ambientColor = new Color3f(0.1f, 0.1f, 0.1f);
    AmbientLight ambientLightNode = new AmbientLight(ambientColor);
    ambientLightNode.setInfluencingBounds(bounds);
    objRoot.addChild(ambientLightNode);

    // Set up the directional lights
    Color3f light1Color = new Color3f(1.0f, 1.0f, 0.9f);
    Vector3f light1Direction = new Vector3f(1.0f, 1.0f, 1.0f);
    Color3f light2Color = new Color3f(1.0f, 1.0f, 0.9f);
    Vector3f light2Direction = new Vector3f(-1.0f, -1.0f, -0.9f);

    DirectionalLight light1 = new DirectionalLight(light1Color, light1Direction);
    light1.setInfluencingBounds(bounds);
    objRoot.addChild(light1);

    DirectionalLight light2 = new DirectionalLight(light2Color, light2Direction);
    light2.setInfluencingBounds(bounds);
    objRoot.addChild(light2);

    return objRoot;
}

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