Polygon with GeometryInfo and Triangulate

[Anonymous]

Hi Everbody,

I tried to render a very large Polygon in GK-coordintes, with
the GeometryInfo and Trinagulate clases.
The Polygon has about 1800 Points.
I think I'm looking at the right place in my universum, because
I can see a LineArray wich have drawn in the place, where the polygon
should be.
And I set new bounds for setFrontClipDistance and setBackClipDistance.
But I still cannot see my polygon.
What I am doing wrong?
A part of the source-code is included as attachment!
Thanks for your help in advance!

Yours Desiree

float xu,yu,zu;
double front,back;
Vector shapevector;
shapevector= new Vector(1);
Shape3D shape = new Shape3D();
            
xu=0.0f;
yu=0.0f;
zu=0.0f;

GraphicsConfiguration config = SimpleUniverse.getPreferredConfiguration();
Canvas3D c = new Canvas3D(config);
tab.add("3DView", c);

BranchGroup scene = new BranchGroup();
Transform3D trans = new Transform3D();
TransformGroup mytrans = new TransformGroup(trans);

//scene.compile();
u = new SimpleUniverse(c);

ViewingPlatform viewingpfm = u.getViewingPlatform();
TransformGroup viewTransGp = viewingpfm.getViewPlatformTransform();
Transform3D translation = new Transform3D();

Viewer viewer = u.getViewer();
View view = viewer.getView();

view.setFrontClipDistance(400.0d);
view.setBackClipDistance(1000000.0d);

translation.set(new Vector3d(3423509.0d,5398395.0d,1000000.0d));

viewTransGp.setTransform(translation);
            
try {
    FeatureLayer fl = (FeatureLayer) g.getFocusLayer();
    
    if (fl == null) {
        System.out.println("GIS3DService: Kein Layer fokusiert");
        return;
    }
    
    float[] x, y;
    int dim;
    Object o;
    Enumeration enum;
    ShapeFeatureProxy sp;
    int count;
    count=0;
    for (enum = fl.getFeatures(); enum.hasMoreElements();) {
        o = enum.nextElement();
        count++;
        if (o instanceof ShapeFeatureProxy) {
            sp = (ShapeFeatureProxy) o;
            
            if (sp.getShapeType() == ArcEntity.POLYGON) {
                x = sp.getOuterBoundaryX();
                y = sp.getOuterBoundaryY();
                
                System.out.println("Polygon ");
                
                System.out.println("x= ");
                zu=x[0]-y[0];
                for (int i=0; i<x.length; i++) { 
                    if(x[i]<xu) xu=x[i];
                    if(y[i]<yu) yu=y[i];
                    System.out.println("p[" + i + "] = " + x[i] 
                                       + "," + y[i]);
                }
                
                int strip[]={x.length};
                Point3f coords[] = new Point3f[x.length];               
                // The testpolygon has about 1800 points with values around
                // x=3423509.0 y=5398395.0
                // x=3506159.0 y=5298568.0
                // I tried both for loops!
                /*for(int i=0;i<x.length;i++){
                  coords[i]= new Point3f(x[i],y[i],0);
                  System.out.println(coords[i]);
                  }
                */
                for(int i=x.length-1;i>=0;i--) {
                    coords[i]= new Point3f(x[i],y[i],0);
                    System.out.println(coords[i]);
                }
                GeometryInfo ginfo = new GeometryInfo(GeometryInfo.POLYGON_ARRAY);
                ginfo.setCoordinates(coords);
                ginfo.setStripCounts(strip);
                
                Triangulator tr = new Triangulator();
                tr.triangulate(ginfo);
                
                NormalGenerator norm = new NormalGenerator();
                norm.generateNormals(ginfo);
                
                Stripifier st = new Stripifier();
                st.stripify(ginfo);
                
                System.out.println("count:"+count);
                                
                mytrans.addChild(shape);

                LineArray xc = new LineArray(2,LineArray.COORDINATES);
                xc.setCoordinate(0,new Point3f(3423509.0f,5398395.0f,0.0f));
                xc.setCoordinate(1,new Point3f(3506159.0f,5298568.0f,0.0f));
                Shape3D s = new Shape3D();
                Appearance app = new Appearance();
                s.setGeometry(xc);
                s.setAppearance(app);
                mytrans.addChild(s);
                
                scene.addChild(mytrans);
            }
        }
    }                                   
    
} catch (Exception ex) {
    System.out.println("GIS3DService ERROR: " + ex.getMessage());
}



u.addBranchGraph(scene);