import java.io.Serializable;

import processing.core.PVector;

/**
 * This class will handle storing and calculating projected screen dimesions.
 * Serializable so we can just write the current calibration to file mostly.
 */
public class Calibration implements Serializable
{
    public PVector screenDimensions;
    public PVector offset;
    public PVector topLeft;
    public PVector bottomRight;

    public Calibration()
    {
        screenDimensions = new PVector();
        offset = new PVector();
        topLeft = new PVector();
        bottomRight = new PVector();
    }

    public void recalculate()
    {
        screenDimensions.set(
            bottomRight.x - topLeft.x,
            topLeft.y - bottomRight.y);
        // if the two calibration points are symmetric, the offset should be 0
        PVector kinectScreenOrigin = PVector.div(PVector.add(bottomRight, topLeft), 2f);
        offset.set(
            kinectScreenOrigin.x - topLeft.x,
            kinectScreenOrigin.y - bottomRight.y,
            kinectScreenOrigin.z);
        /*
        System.out.println("Screen Calibration: " + screenWidth + ", " + screenHeight + " " + screenDistance);
        System.out.println("Bottom Right: " + bottomRight.x + ", " + bottomRight.y);
        System.out.println("Upper Left: " + upperLeft.x + ", " + upperLeft.y);
        System.out.println("Offset: " + offset.x + ", " + offset.y);
        */
    }
}