Example usage for javax.media.j3d SharedGroup SharedGroup

Introduction

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

Prototype

public SharedGroup() 

Source Link

Document

Constructs and initializes a new SharedGroup node object.

Usage

From source file:TransformExplorer.java

RotAxis(float axisLength) {
    super(Switch.CHILD_NONE);
    setCapability(Switch.ALLOW_SWITCH_READ);
    setCapability(Switch.ALLOW_SWITCH_WRITE);

    // set up the proportions for the arrow
    float axisRadius = axisLength / 120.0f;
    float arrowRadius = axisLength / 50.0f;
    float arrowHeight = axisLength / 30.0f;

    // create the TransformGroup which will be used to orient the axis
    axisTG = new TransformGroup();
    axisTG.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
    axisTG.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
    addChild(axisTG);//from w  ww .  j  a va  2 s.c  o m

    // Set up an appearance to make the Axis have 
    // blue ambient, black emmissive, blue diffuse and white specular 
    // coloring.  
    Material material = new Material(blue, black, blue, white, 64);
    Appearance appearance = new Appearance();
    appearance.setMaterial(material);

    // create a cylinder for the central line of the axis
    Cylinder cylinder = new Cylinder(axisRadius, axisLength, appearance);
    // cylinder goes from -length/2 to length/2 in y
    axisTG.addChild(cylinder);

    // create a SharedGroup for the arrowHead
    Cone arrowHead = new Cone(arrowRadius, arrowHeight, appearance);
    SharedGroup arrowHeadSG = new SharedGroup();
    arrowHeadSG.addChild(arrowHead);

    // Create a TransformGroup to move the cone to the top of the 
    // cylinder
    tmpVector.set(0.0f, axisLength / 2 + arrowHeight / 2, 0.0f);
    tmpTrans.set(tmpVector);
    TransformGroup topTG = new TransformGroup();
    topTG.setTransform(tmpTrans);
    topTG.addChild(new Link(arrowHeadSG));
    axisTG.addChild(topTG);

    // create the bottom of the arrow
    // Create a TransformGroup to move the cone to the bottom of the 
    // axis so that its pushes into the bottom of the cylinder
    tmpVector.set(0.0f, -(axisLength / 2), 0.0f);
    tmpTrans.set(tmpVector);
    TransformGroup bottomTG = new TransformGroup();
    bottomTG.setTransform(tmpTrans);
    bottomTG.addChild(new Link(arrowHeadSG));
    axisTG.addChild(bottomTG);

    updateAxisTransform();
}

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