[JAVA3D] Tutorial question

[Andy]

Hi Java3D Dev Team:

In Tutorial 2, it shows that TriangleFanArray is having a parameter of
vertexCount which is TriangleFanArray(vertexCount....).  However, is this
vertexCount or stripCount?  Since I created a Fan with 10 points(vertices)
only including the central point, I should have this ".....= new
TriangleFanArray(10, TriangleFanArray.COORDINATES, stripCounts);" instead of
"....=new TriangleFanArray(17....);".  However, if I make it 10, it will
have runtime error.  What is the problem?  Here is my source code:

private BranchGroup createCone(){
                BranchGroup root = new BranchGroup();

                // CREATE ALL TRIANGLES //
                TriangleFanArray tfa;
                int s = 8;
                int v = s + 1;
                int totalV = v + 1;
                Point3f coords[] = new Point3f[v+1];
                int stripCounts[] = {17};
                float r = 0.5f;
                float x, y;
                double angle = 360 / s;

                coords[0] = new Point3f(0.0f, 0.0f, 0.0f);

                for(int a = 1, n = 0; a <= s; a++, n++){
                        x = r * EngMath.cos(n*angle);
                        y = r * EngMath.sin(n*angle);

                        coords[a] = new Point3f(x, y, 0.0f);
                }

                coords[9] = new Point3f(0.0f, 0.0f, 0.0f);

                tfa = new TriangleFanArray(10, TriangleFanArray.COORDINATES,
stripCounts);
                tfa.setCoordinates(0, coords);
                root.addChild(new Shape3D(tfa));
                return root;
        }

Please help.  Thanks.

Andy

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