C#实现图形位置组合转换的方法

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Drawing.Drawing2D;
namespace advanced_drawing
{
  public partial class Form9 : Form
  {
    public Form9()
    {
      InitializeComponent();
    }
    private void Form9_Paint(object sender, PaintEventArgs e)
    {
      Rectangle rect = new Rectangle(0, 0, 20, 10);
      Matrix matrix = new Matrix();
      matrix.Scale(2, 3);//Scale和Translate的先后顺序
      matrix.Translate(10, 20);
      //matrix.Translate(10, 20);
      //matrix.Scale(2, 3);
      Graphics g = e.Graphics;
      g.Transform = matrix;
      g.FillRectangle(Brushes.Blue, rect);
    }
  }
}