如何得到随机绘制的矩形被垂直堆叠相邻

本文关键字：垂直 何得 随机 绘制 | 更新日期: 2023-09-27 18:11:00

我试图让随机绘制的矩形在一个表格上彼此排成一行，但我的循环不工作，给我不希望的结果，任何帮助将不胜感激。

我已经创建了一个方法来创建随机矩形，然后将它们存储在列表集合中。

    List<Rectangle> rectangleCollection = new List<Rectangle>();
    void CreateRectangle()
    {
        int TallestRectangle = 0; ;
        int PrevRecX = 0;
        int PrevRecY = 0;
        Pen pen = new Pen(Color.Black);
        Graphics graphic = this.CreateGraphics();

        foreach (Rectangle rect in rectangleCollection)
        {
            if (rect.Height > TallestRectangle) 
                TallestRectangle = rect.Height;
        }
        foreach (Rectangle rect in rectangleCollection)
        {
            if (PrevRecX + PrevRecY == 0)
            {
                graphic.DrawRectangle(pen, new Rectangle(rect.X, (TallestRectangle - rect.Height), rect.Width, rect.Height));
            }
            else
            {
                graphic.DrawRectangle(pen, new Rectangle((PrevRecX + PrevRecY), (TallestRectangle - rect.Height), rect.Width, rect.Height));
            }
            PrevRecX = rect.X;
            PrevRecY = rect.Width;
        }
    }
    void GetRandomRectangle()
    {
        Random ran = new Random();
        int x = 0;
        int y = 0;
        int width = ran.Next(100, 500);
        int height = ran.Next(200, 700);
        Rectangle rec = new Rectangle(x, y, width, height);
        rectangleCollection.Add(rec);
    }

如何得到随机绘制的矩形被垂直堆叠相邻

你的第二个foreach看起来太复杂了。我不认为你真的需要PrevRecX。试试这个，看看它是否如你所愿。

void CreateRectangle()
{
  int TallestRectangle = 0;
  int PrevRecY = 0;
  Pen pen = new Pen(Color.Black);
  Graphics graphic = this.CreateGraphics();
  foreach (Rectangle rect in rectangleCollection)
  {
    if (rect.Height > TallestRectangle)
      TallestRectangle = rect.Height;
  }
  foreach (Rectangle rect in rectangleCollection)
  {
    graphic.DrawRectangle(pen, new Rectangle(rect.X + PrevRecY, (TallestRectangle - rect.Height), rect.Width, rect.Height));
    PrevRecY += rect.Width; // note the +=
  }
}

对于static Random，只需在方法外部声明变量并在内部使用它，就像这样:

private static Random ran = new Random();
void GetRandomRectangle()
{
  int x = 0;
  int y = 0;
  int width = ran.Next(100, 500);
  int height = ran.Next(200, 700);
  // ...
}
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