HelloUniverse

From 54f1415fa01061f0bcc5126605713b9a391cec46 Mon Sep 17 00:00:00 2001 From: phil Date: Fri, 29 Dec 2017 22:53:47 +1300 Subject: Some excellent doc files added --- doc-files/HelloUniverse.html | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) create mode 100644 doc-files/HelloUniverse.html (limited to 'doc-files/HelloUniverse.html') diff --git a/doc-files/HelloUniverse.html b/doc-files/HelloUniverse.html new file mode 100644 index 0000000..5e37bd6 --- /dev/null +++ b/doc-files/HelloUniverse.html @@ -0,0 +1,21 @@ + + + + + HelloUniverse + + +

HelloUniverse: A Sample Java +3D Program

Here are code fragments from a simple program, HelloUniverse.java, +that creates a cube and a RotationInterpolator behavior object that +rotates the cube at a constant rate of pi/2 radians per second. The +HelloUniverse class creates the branch graph +that includes the cube and the RotationInterpolator behavior. It then +adds this branch graph to the Locale object generated by the +SimpleUniverse utility. +



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

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

        // Create a simple Shape3D node; add it to the scene graph.
        objTrans.addChild(new ColorCube(0.4));

        // Create a new Behavior object that will perform the
        // desired operation on the specified transform and add
        // it into the scene graph.
        Transform3D yAxis = new Transform3D();
        Alpha rotationAlpha = new Alpha(-1, 4000);
        RotationInterpolator rotator = new RotationInterpolator(
                rotationAlpha, objTrans, yAxis,
                0.0f, (float) Math.PI*2.0f);
        BoundingSphere bounds =
            new BoundingSphere(new Point3d(0.0,0.0,0.0), 100.0);
        rotator.setSchedulingBounds(bounds);
        objRoot.addChild(rotator);

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

        return objRoot;
    }

    public HelloUniverse() {
        <set layout of container, construct canvas3d, add canvas3d>

        // Create the scene; attach it to the virtual universe
        BranchGroup scene = createSceneGraph();
        SimpleUniverse u = new SimpleUniverse(canvas3d);
        u.getViewingPlatform().setNominalViewingTransform();
        u.addBranchGraph(scene);
    }
}

+ + -- cgit v1.2.3