What is the best way to read pixels of a JavaFX Canvas?

Question

I want to get the color for specific coordinates inside a Canvas. I already tried getting a snapshot using this code:

WritableImage snap = gc.ge         


        

Answer 1

public class Pixel
{
    private static final SnapshotParameters SP = new SnapshotParameters();
    private static final WritableImage WI = new WritableImage(1, 1);
    private static final PixelReader PR = WI.getPixelReader();

    private Pixel()
    {
    }

    public static int getArgb(Node n, double x, double y)
    {
        synchronized (WI)
        {
            Rectangle2D r = new Rectangle2D(x, y, 1, 1);
            SP.setViewport(r);
            n.snapshot(SP, WI);
           return PR.getArgb(0, 0);
        }
    }

    public static Color getColor(Node n, double x, double y)
    {
        synchronized (WI)
        {
            Rectangle2D r = new Rectangle2D(x, y, 1, 1);
            SP.setViewport(r);
            n.snapshot(SP, WI);
            return PR.getColor(0, 0);
        }
    }
}