[JAVA3D] Calling a class error

Γιάννης Tue, 17 Jun 2003 09:33:55 -0700

I have a the following class which make a polyhedron

-----------------------------------------

import com.sun.j3d.utils.geometry.*;
import javax.media.j3d.*;
import java.awt.*;
import javax.vecmath.*;
import javax.media.j3d.GeometryArray;
import java.applet.Applet;
import com.sun.j3d.utils.geometry.GeometryInfo;

public class Polyhedron extends Applet
{

public Polyhedron()

{ Point3f[] pts=new Point3f[20];

pts[0]= new Point3f( 0.0f,    0.0f, 1.1547f);
pts[1]= new Point3f( 1.0f, 0.0f, 0.57735f);
pts[2]= new Point3f( 0.333333f, 0.942809f,         0.57735f);
pts[3]= new Point3f( -1.0f, 0.0f, 0.57735f);
pts[4]= new Point3f( -0.333333f,   -0.942809f, 0.57735f);
pts[5]= new Point3f( 1.0f,   0.0f, -0.57735f);
pts[6]= new Point3f( 0.666667f, -0.942809f, 0.0f);
pts[7]= new Point3f( -0.666667f, 0.942809f, 0.0f);
pts[8]= new Point3f( 0.333333f,   0.942809f, -0.57735f);
pts[9]= new Point3f( -1.0f,    0.0f,          -0.57735f);
pts[10]= new Point3f( -0.333333f, -0.942809f, -0.57735f);
pts[11]= new Point3f( 0.0f, 0.0f,    -1.1547f);

// the faces
int[] indices={2, 1, 0,
                 0, 3, 4,
                 1, 6, 5,
                 2,8,7,
                 3,7,9,
                 4,10,6,
                 5,11,8,
                 9,11,10,
                 0,2,7,3,
                 0,4,6,1,
                 1,5,8,2,
                 3,9,10,4,
                 5,6,10,11,
                 7,8,11,9

                 };

// the number of vertices of each face
int[] stripCounts={3,3,3,3,3,3,3,3,4,4,4,4,4,4};

// I like Geometry Info. It's easier to create shapes ;-)
GeometryInfo gi = new GeometryInfo(GeometryInfo.POLYGON_ARRAY);
// initialize the geometry info here

gi.setCoordinateIndices(indices);
gi.setCoordinates(pts);
gi.setStripCounts(stripCounts);
gi.recomputeIndices();

NormalGenerator ng = new NormalGenerator();
ng.generateNormals(gi);
gi.recomputeIndices();
// stripify
Stripifier st = new Stripifier();
st.stripify(gi);
gi.recomputeIndices();

GeometryArray myPolyhedron = gi.getGeometryArray();

Shape3D shape = new Shape3D();

shape.setGeometry(myPolyhedron);

Appearance app = new Appearance();
Material mat = new Material();
PolygonAttributes polyAtt= new
PolygonAttributes(PolygonAttributes.POLYGON_FILL,PolygonAttributes.CULL_BACK
, 0.0f);

app.setMaterial(mat);
app.setPolygonAttributes(polyAtt);

shape.setAppearance(app);

TransformGroup tg=new TransformGroup();
tg.addChild(shape);
}

}//end class

-----------------------------------------

I also have another class that calls the previous one as below

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import com.sun.j3d.utils.universe.*;
import javax.media.j3d.BranchGroup;
import com.sun.j3d.utils.applet.MainFrame;
import javax.media.j3d.*;
import java.awt.*;
import java.awt.BorderLayout;
import com.sun.j3d.utils.applet.MainFrame;

public class CallClass extends java.applet.Applet{

public CallClass () {


SimpleUniverse universe = new SimpleUniverse();

   GraphicsConfiguration config = universe.getPreferredConfiguration();

  Canvas3D c = new Canvas3D(config);

Polyhedron polyhedron=new Polyhedron();

   BranchGroup group = new BranchGroup();

    group.addChild(polyhedron);

   universe.getViewingPlatform().setNominalViewingTransform();

   universe.addBranchGraph(group);


}

public static void main(String[] args) {


new CallClass();



}
}//end class CallClass

-------------------------------------------

The problem is that when i am compiling the second class i recieve the following error

D:\java\Java3d Project\tests\Hard tests\CallClass.java:26: addChild(javax.media.j3d.Node) in javax.media.j3d.Group cannot be applied to (Polyhedron)
group.addChild(polyhedron);
^
1 error

What is wrong?

[JAVA3D] Calling a class error

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