java绘制曲线箭头，将箭头置于正确位置

Question

我正在用java绘制一个曲线箭头

但我不能把箭头放在正确的位置

你能帮帮我吗

这就是我到目前为止所做的， 图标应该是动态大小，所以所有的都应该根据 m_size变量

谢谢

public void paintIcon(Component c, Graphics g, int x, int y) {
    Graphics2D g2 = (Graphics2D) g;
    Object hintOriginal = g2.getRenderingHint(RenderingHints.KEY_ANTIALIASING);
    g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); 
    
    int strokeSize = m_size / 6;
    
    Stroke strokeOriginal = g2.getStroke();
    g2.setStroke(new BasicStroke(strokeSize, BasicStroke.CAP_SQUARE, BasicStroke.JOIN_MITER));
    
    g2.drawArc(x + (strokeSize / 2), y + (strokeSize / 2), m_size - (strokeSize * 2), m_size - (strokeSize * 2), 45, 180);

    g2.setStroke(strokeOriginal);

    int arrSize = (m_size / 4) + strokeSize;
    int[] xArr = new int[3];
    int[] yArr = new int[3];
    
    xArr[0] = x;
    xArr[1] = x + arrSize;
    xArr[2] = x + (arrSize / 2);

    yArr[0] = y;
    yArr[1] = y;
    yArr[2] = y - (arrSize / 2);

    AffineTransform  origXform = g2.getTransform();
    AffineTransform newXform  = (AffineTransform) (origXform.clone());
    
    newXform.rotate(Math.toRadians(135), x + m_size / 2, y + m_size / 2);
    g2.setTransform(newXform);

    g2.fillPolygon(xArr, yArr, 3);
    
    g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, hintOriginal);
}