Window.java 文件源码

/**
 * checks if pt is on root and calls itself recursivly to check root's children
 * @param pt the point we want to check the location of
 * @param root the message we want to check if the point is on
 * @return root if pt is on it, null otherwise
 * @author Paul Best
 */
public Message clickedOn(Point pt, Message root){
    Message answer;
    for(int i = 0; i<root.getChildren().size();i++){
        answer = clickedOn(pt,root.getChildren().get(i));
        if(answer!=null){
            return  answer;
        }
    }
    if(Math.pow(Math.pow(pt.x/mScaleFactor-(root.getGoval().getX()+mPosX/mScaleFactor),2)+Math.pow(pt.y/mScaleFactor-(root.getGoval().getY()+mPosY/mScaleFactor),2),0.5)<root.getGoval().getRay()){
        return root;
    }
    else{
        return null;
    }
}