package org.ntlab.animations;

import java.awt.Point;
import java.awt.geom.Point2D;
import java.util.concurrent.ThreadPoolExecutor;

import org.ntlab.deltaViewer.DeltaGraphAdapter;

import com.mxgraph.model.mxICell;
import com.mxgraph.swing.mxGraphComponent;
import com.mxgraph.util.mxPoint;

/**
 * Animation of edge stretching and shrinking.
 * 
 * @author Nitta Lab.
 */
public class EdgeAnimation extends MagnetRONAnimation {
	
    /**
     * The constructor of {@code EdgeAnimation}.
     * 
     * @param mxgraph
     * @param mxgraphComponent
     */
	public EdgeAnimation(DeltaGraphAdapter mxgraph, mxGraphComponent mxgraphComponent) {
		super(mxgraph, mxgraphComponent);
	}
	
	/**
	 * See {@code MagnetRONAnimation#init(mxICell, Point2D, ThreadPoolExecutor)}
	 * 
	 * @param sourceCell
	 * @param targetPoint
	 */
	@Override
	public void init(mxICell sourceCell, Point2D targetPoint, ThreadPoolExecutor threadPoolExecutor) {
		super.init(sourceCell, targetPoint, threadPoolExecutor);
		
		Point2D curPoint = new Point(sourceCell.getGeometry().getPoint());
		System.out.println("sourcePoint: " + sourceCell.getGeometry().getPoint());
		System.out.println("targetPoint: " + targetPoint);
		
		// Calculate resize line model
		mxPoint distancePoint = new mxPoint();
		distancePoint.setX(targetPoint.getX() - curPoint.getX()); 
		distancePoint.setY(targetPoint.getY() - curPoint.getY());
		Point2D updatePoint = new Point2D.Double();
		updatePoint.setLocation(distancePoint.getX() / getTotalCycleCount(), distancePoint.getY() / getTotalCycleCount());
		setVelocity(updatePoint);
		System.out.println("updatePoint: " + getVelocity());
	}
	
	protected void jumpTo(int curCycleCount) {
		// Add a vertex to the graph in a transactional fashion. The vertex is actually a 'cell' in jgraphx terminology.
		mxgraph.getModel().beginUpdate();
		try {
			getSourceCell().getGeometry().setX(getSourceInitalPoint().getX() + getVelocity().getX() * curCycleCount);
			getSourceCell().getGeometry().setY(getSourceInitalPoint().getY() + getVelocity().getY() * curCycleCount);
		} finally {
			  mxgraph.getModel().endUpdate();
		}
    	mxgraphComponent.refresh();		
	}

}