时间控件：

private float rotationAngle;
public Form1()
{
    InitializeComponent();         
    rotationAngle = 0.0f;           
}
private void timer1_Tick(object sender, EventArgs e)
{
    rotationAngle += 2.0f; // 每次定时器触发时增加旋转角度
    if (rotationAngle >= 360.0f)
    {
        rotationAngle -= 360.0f;
    }
    this.Invalidate(); // 通知窗体需要重绘
}

绘制三维立体图案：

private void Form1_Paint(object sender, PaintEventArgs e)
{
    Graphics g = e.Graphics;
    Pen pen = new Pen(Color.Fuchsia, 5);

    // 定义立方体的8个顶点
    Point3D[] cubePoints = {
        new Point3D(-100, -100, -100),
        new Point3D(100, -100, -100),
        new Point3D(100, 100, -100),
        new Point3D(-100, 100, -100),
        new Point3D(-100, -100, 100),
        new Point3D(100, -100, 100),
        new Point3D(100, 100, 100),
        new Point3D(-100, 100, 100)
    };

    // 创建一个旋转矩阵
    Matrix3x3 rotationMatrix = Matrix3x3.RotationY(rotationAngle) * Matrix3x3.RotationX(rotationAngle);

    // 应用旋转变换到每个顶点
    Point[] screenPoints = new Point[8];
    for (int i = 0; i < 8; i++)
    {
        Point3D rotatedPoint = rotationMatrix[cubePoints[i]];
        screenPoints[i] = new Point((int)rotatedPoint.X + 200, (int)rotatedPoint.Y + 200);
    }

    // 绘制立方体的边
    g.DrawLine(pen, screenPoints[0], screenPoints[1]);
    g.DrawLine(pen, screenPoints[1], screenPoints[2]);
    g.DrawLine(pen, screenPoints[2], screenPoints[3]);
    g.DrawLine(pen, screenPoints[3], screenPoints[0]);
    g.DrawLine(pen, screenPoints[4], screenPoints[5]);
    g.DrawLine(pen, screenPoints[5], screenPoints[6]);
    g.DrawLine(pen, screenPoints[6], screenPoints[7]);
    g.DrawLine(pen, screenPoints[7], screenPoints[4]);
    g.DrawLine(pen, screenPoints[0], screenPoints[4]);
    g.DrawLine(pen, screenPoints[1], screenPoints[5]);
    g.DrawLine(pen, screenPoints[2], screenPoints[6]);
    g.DrawLine(pen, screenPoints[3], screenPoints[7]);           
}

三维图案类：

// 三维点类
public class Point3D
{
    public float X, Y, Z;      
    public Point3D(float x, float y, float z)
    {
        X = x;
        Y = y;
        Z = z;
    }       
}
// 三维矩阵类
public class Matrix3x3
{
    public float[,] M = new float[3, 3];        
    public static Matrix3x3 RotationX(float angle)
    {
        float cos = (float)Math.Cos(angle);
        float sin = (float)Math.Sin(angle);
        return new Matrix3x3
        {
            M = new float[,]
            {
                { 1, 0, 0 },
                { 0, cos, -sin },
                { 0, sin, cos }
            }
        };
    }
    public static Matrix3x3 RotationY(float angle)
    {
        float cos = (float)Math.Cos(angle);
        float sin = (float)Math.Sin(angle);
        return new Matrix3x3
        {
            M = new float[,]
            {
                { cos, 0, sin },
                { 0, 1, 0 },
                { -sin, 0, cos }
            }
        };
    }
    public static Matrix3x3 operator *(Matrix3x3 a, Matrix3x3 b)
    {
        Matrix3x3 result = new Matrix3x3();
        for (int i = 0; i < 3; i++)
        {
            for (int j = 0; j < 3; j++)
            {
                result.M[i, j] = 0;
                for (int k = 0; k < 3; k++)
                {
                    result.M[i, j] += a.M[i, k] * b.M[k, j];
                }
            }
        }
        return result;
    }
    public Point3D this[Point3D p]
    {
        get
        {
            float x = M[0, 0] * p.X + M[0, 1] * p.Y + M[0, 2] * p.Z;
            float y = M[1, 0] * p.X + M[1, 1] * p.Y + M[1, 2] * p.Z;
            float z = M[2, 0] * p.X + M[2, 1] * p.Y + M[2, 2] * p.Z;
            return new Point3D(x, y, z);
        }
    } 

#文章首发挑战赛##头条创作挑战赛#