private Timer animationTimer;
private int rotationAngle = 0;
private bool isClockwise = true;
private void AnimationTimer_Tick(object sender, EventArgs e)
{
if (isClockwise)
{
rotationAngle = 10;
if (rotationAngle >= 360)
{
rotationAngle = 0;
}
}
else
{
rotationAngle -= 10;
if (rotationAngle <= 0)
{
rotationAngle = 360;
}
}
this.Invalidate(); // 触发窗体重绘
}
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
int centerX = this.ClientSize.Width / 2;
int centerY = this.ClientSize.Height / 2;
e.Graphics.TranslateTransform(centerX, centerY);
e.Graphics.RotateTransform(rotationAngle);
Pen radarPen = new Pen(Color.Fuchsia, 2);
Pen radarPen1 = new Pen(Color.White, 2);
Font font = new Font("Arial", 40);
stringFormat stringFormat = new StringFormat();
stringFormat.Alignment = StringAlignment.Center;
stringFormat.LineAlignment = StringAlignment.Center;
for (int i = 0; i < 10; i )
{
float angle = i * 36;
float x = (float)(150 * Math.Sin(angle * Math.PI / 180));
float y = (float)(-150 * Math.Cos(angle * Math.PI / 180));
e.Graphics.DrawLine(radarPen, 0, 0, x, y);
// 使用SolidBrush来填充圆形
SolidBrush solidBrush = new SolidBrush(Color.Fuchsia);
e.Graphics.FillEllipse(solidBrush, x - 40, y - 40, 80, 80);
SizeF textSize = e.Graphics.MeasureString(((char)('A' i)).ToString(), font);
e.Graphics.DrawString(((char)('A' i)).ToString(), font, Brushes.White, x 20 - textSize.Width / 4, y 20 - textSize.Height / 4, stringFormat);
}
e.Graphics.ResetTransform();
}
