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Message:

centre in any shape - Java2D + Center of Attention

Posted by vijayv on December 28, 2001 at 6:00 AM

I understand that the shapes are reprsented as curves (in my case when i printed the Type information - if found them to be represented as Cubic Type.)

// Holding different shapes
VennArea vennarea   = (VennArea)VennPanel.this.m_vennAreas.get(i);
                    PathIterator pi = vennarea.getPathIterator(null);
                    System.out.println("Area ............" +"[" + i +"]");
                    int j=0;
                    while(!pi.isDone())
                    {
                          describeShape(pi,j);
                          pi.next();
                    }

void  describeShape(PathIterator pi, int j)
    {
        double[] coordinates = new double[6];
        int type = pi.currentSegment(coordinates);
        System.out.println("type " + type);
        Graphics2D graphics = (Graphics2D)this.getGraphics();
        switch (type)
        {
            case PathIterator.SEG_MOVETO:
                System.out.println("Move to " + coordinates[0] + "," + coordinates[1] );
                graphics.setColor(Color.yellow);
                break;
            case PathIterator.SEG_LINETO:
                System.out.println("Line to " + coordinates[0] + "," + coordinates[1] );
                break;
            case PathIterator.SEG_QUADTO :
                System.out.print("Quadric  to " + coordinates[0] + "," + coordinates[1] );
                System.out.println("  " + coordinates[2] + "," + coordinates[3] );
                break;
            case PathIterator.SEG_CUBICTO:
                System.out.print("cubic  to " + coordinates[0] + "," + coordinates[1] );
                System.out.print(" , " + coordinates[2] + "," + coordinates[3] );
                System.out.print(" , " + coordinates[4] + "," + coordinates[5] );
        // Reconstruct the same curve       
                QuadCurve2D qd = new QuadCurve2D.Double(coordinates[0],coordinates[1],coordinates[2],coordinates[3],coordinates[4],coordinates[5]);
                //QuadCurve2D qd1 = new QuadCurve2D.Double(245,21,101,21,101,169);
                graphics.draw(qd);
                break;
            case PathIterator.SEG_CLOSE:
                System.out.println("Close...............................");
                break;
            default:
                System.out.println("defualt case");
                break;
        }
    }

The code to find the curve is shown. But when i again reconstruct the same curve - it doesn't work right. !!!

Any idea - what foolish error i am doing here !!

I have two gif files which clearly mentions the problem with clarity - i dont know how to attach them here.

If some one is intereseted can mail me the id - so that i can send the gif.

Thanks

Vijayv

• centre in any shape - Java2D + Center of Attention vijay December 30, 2001 at 2:33 AM (0)