Update geometry of a cylinder

Question

Hi,
There is a way to update the geometry of a cylinder (radius, length) ?
There is nothing about on javadoc. It's only possible to get the shape...
Thanks.
Edit : i will looking on http://aviatrix3d.j3d.org/javadoc/org/j3d/renderer/aviatrix3d/geom/Cylinder.html#setDimensions(float,%20float)

Answer 1

Hope this helps:
import javax.media.j3d.BoundingSphere;
import javax.media.j3d.BranchGroup;
import javax.media.j3d.DirectionalLight;
import javax.media.j3d.Transform3D;
import javax.media.j3d.TransformGroup;
import javax.vecmath.Color3f;
import javax.vecmath.Point3d;
import javax.vecmath.Vector3d;
import javax.vecmath.Vector3f;
import com.sun.j3d.utils.geometry.Cylinder;
import com.sun.j3d.utils.universe.SimpleUniverse;
public class Java3D {
     private Transform3D scaleShape;
     private TransformGroup scaleGroup;
     public Java3D(){
        SimpleUniverse universe = new SimpleUniverse();
        BranchGroup group = new BranchGroup();
        Cylinder cyl = new Cylinder(1.0f, 1.0f);
        // Create a red light that shines for 100m from the origin
        Color3f light1Color = new Color3f(1.8f, 0.1f, 0.1f);
        BoundingSphere bounds = new BoundingSphere(new Point3d(0.0,0.0,0.0), 100.0);
        Vector3f light1Direction = new Vector3f(4.0f, -7.0f, -12.0f);
        DirectionalLight light1 = new DirectionalLight(light1Color, light1Direction);
        light1.setInfluencingBounds(bounds);
        group.addChild(light1);
          scaleShape = new Transform3D();
          scaleShape.setScale(new Vector3d(0.05,0.05,0.05));
          scaleGroup = new TransformGroup(scaleShape);
          scaleGroup.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
          scaleGroup.addChild(cyl);
          group.addChild(scaleGroup);
          // look towards the ball
          universe.getViewingPlatform().setNominalViewingTransform();
          universe.addBranchGraph(group);
     public static void main( String[] args ) {
          Java3D j3d = new Java3D();
// time delay for viewing transformation
          try {
               Thread.sleep(5000);
          } catch (InterruptedException e) {
               // TODO Auto-generated catch block
               e.printStackTrace();
// translate object
          j3d.scaleShape.setScale(new Vector3d(0.5,0.5,0.5));
          j3d.scaleShape.setTranslation(new Vector3f(0,0,0.0f));
          j3d.scaleGroup.setTransform(j3d.scaleShape);
} Edited by: grndvl1 on May 26, 2009 12:58 PM
Edited by: grndvl1 on May 26, 2009 1:12 PM