java我怎样才能在Android的星形拓扑中画出许多朋友

Question

我有点问题

假设我有Q图标（简单的图标，比如安卓徽标），我想把它们放在一个星形拓扑中，与单星中心（图标）相对，并将它们连接到安卓画布上

我该怎么做

有确切的联系吗

有算法信息吗

Answer 1

public  void starTopology(Canvas mCanvas,int noOfFriends,float centerX,float centerY,int radious) {


        final double PI = 3.14;
        final double MARGIN = (2*PI)/noOfFriends;
        final double OFFSETX = centerX;
        final double OFFSETY = centerY;
        final int RADIUS = radious;

        float pointXCoord = 0;
        float pointYCoord = 0;
        double NextPositionOnCircumference = MARGIN;



        Paint myCustomizedBrush = new Paint();
        myCustomizedBrush.setAntiAlias(true);

        myCustomizedBrush.setColor(Color.WHITE);


        for(int i= 0; i < noOfFriends; i++){

            pointXCoord =  (float) (OFFSETX + RADIUS * Math.cos(NextPositionOnCircumference));
            pointYCoord  = (float) (OFFSETY + RADIUS * Math.sin(NextPositionOnCircumference));

            NextPositionOnCircumference += MARGIN;
            mCanvas.drawLine((float)OFFSETX, (float)OFFSETY, pointXCoord, pointYCoord, myCustomizedBrush);
            pointXCoord -= 10;
            pointYCoord -= 10;
            mCanvas.drawBitmap(Utility.FriendProfilePic.get(i), pointXCoord, pointYCoord, null);


        }
        mCanvas.drawCircle((float)OFFSETX, (float)OFFSETY, 5, myCustomizedBrush);

}