Trouble with PointAttributes class
Hi,
I am using a fairly simple code to use the PointAttributes class. However, the porgram refuses to compile and points to these lines as erroneous....would very much appreciate some input here.
PointAttributes pt=new PointAttributes(size,false);
and
app.setPointAttributes(pt);
Code posed below:
import com.sun.j3d.utils.universe.*;
import com.sun.j3d.utils.geometry.*;
import javax.media.j3d.*;
import javax.media.j3d.PointAttributes.*;
import javax.vecmath.*;
import java.awt.*;
import java.awt.event.*;
publicclass PtAttributesextends Frameimplements ActionListener
{
protected Button myButton=new Button("Exit");
private SimpleUniverse u=null;
publicclass aPointextends Shape3D{
public aPoint(float xo,float yo,float zo,float size )
{
this.setGeometry(createPoint(xo, yo, zo));
this.setAppearance(createPointApp(size));
}
private Geometry createPoint(float x,float y,float z)
{
// x, y, z are (x, y, z) coordinate of the point
PointArray pt =new PointArray(1,GeometryArray.COORDINATES);
pt.setCoordinate(0,new Point3f(x, y, z));
return pt;
}
private Appearance createPointApp(float size)
{
Appearance app =new Appearance();//PointAttributes
// and Point antialiasing = false
PointAttributes pt=new PointAttributes(size,false);
//pointAtt.setPointSize(size);
//pointAtt.setPointAntialiasingEnable(false);
app.setPointAttributes(pt);
return app;
}
}//end class aPoint
public BranchGroup contentBranch()
{
BranchGroup objRoot =new BranchGroup();
// add more point here with different coordinates and point width
objRoot.addChild(new aPoint(0.3f, 0.4f, 0.0f, 4f));
objRoot.addChild(new aPoint(0.4f, -0.3f, 0.0f, 8f));
objRoot.addChild(new aPoint(-0.2f, 0.6f, 0.0f, 20f));
objRoot.compile();
return objRoot;
}
publicvoid actionPerformed(ActionEvent e)
{
dispose();
System.exit(0);
}//end actio performed
public PtAttributes()
{
GraphicsConfiguration config=SimpleUniverse.getPreferredConfiguration();
Canvas3D myCanvas=new Canvas3D(config);
BranchGroup scene=contentBranch();
u=new SimpleUniverse(myCanvas);
u.getViewingPlatform().setNominalViewingTransform();
u.addBranchGraph(scene);
setTitle("Appearance");
setSize(600,600);
setLayout(new BorderLayout());
add("Center",myCanvas);
add("South",myButton);
myButton.addActionListener(this);
setVisible(true);
}
publicstaticvoid main(String[] args)
{
PtAttributes point=new PtAttributes();
}
}//end class PtAttributes
