import objectdraw.*;

import java.awt.*;

 

public class CrossHairs extends WindowController {

 

        private Line vert, horiz; // lines forming crosshairs

 

        private int canvasWidth, canvasHeight;

 

        // Initially center the lines

        public void begin() {

                canvasWidth = canvas.getWidth();

                canvasHeight = canvas.getHeight();

 

                vert = new Line(canvasWidth / 2, 0, canvasWidth / 2, canvasHeight,

                                canvas);

                horiz = new Line(0, canvasHeight / 2, canvasWidth, canvasHeight / 2,

                                canvas);

        }

 

        // move the lines so that they intersect at the mouse

        public void onMouseDrag(Location point) {

                vert.setEndPoints(point.getX(), 0, point.getX(), canvasHeight);

 

                horiz.setEndPoints(0, point.getY(), canvasWidth, point.getY());

        }