如何从形式的边界进行碰撞。 [英] how to make collision from boundaries of form.

问题描述

我在Windows窗体应用程序中制作了两个相同大小的圆圈，然后以一种永远不会碰撞的方式移动它们，现在我想让圆圈从Form的边界反映出如何以简单的方式完成。



private void button11_Click（object sender，EventArgs e）

{

Pen myPen = new Pen（Color） .Black）;

Pen mypen2 =新笔（Color.Black）;

图形formGraphics;

formGraphics = this.CreateGraphics（）;

int x = 100，y = 100，x1 = 200，y1 = 200;



for（int i = 2; i< ; 200; i ++）

{

this.Refresh（）;

formGraphics = this.CreateGraphics（）;

formGraphics.DrawEllipse（myPen，new Rectangle（x + i，y / i，100,100））;

formGraphics.DrawEllipse（myPen，new Rectangle（x1 / i，y1 + i， 100,100））;

System.Threading.Thread.Sleep（22）;

}

解决方案

参考：在c＃中弹跳球[ ^ ]

检测边界碰撞和反射的代码如下：

 xC + = xDelta;  //   move ball  
 yC + = yDelta; 
  if （（xC + radius >  = ClientSize.Width）||（xC  - radius <  =  0 ）） //  检查墙壁命中 
 xDelta = -xDelta; 
  if （（yC + radius >  = ClientSize.Height）||（yC  - radius <  =  0 ））
 yDelta = -yDelta; 

I have made two circles of same size on windows form application and then moved them in such a way that they will never be collided and now i want circles to reflect from boundaries of Form how this could be done in a easy way.

private void button11_Click(object sender, EventArgs e)
{
Pen myPen = new Pen(Color.Black);
Pen mypen2 = new Pen(Color.Black);
Graphics formGraphics;
formGraphics = this.CreateGraphics();
int x=100, y=100,x1=200,y1=200;

for (int i = 2; i < 200; i++)
{
this.Refresh();
formGraphics = this.CreateGraphics();
formGraphics.DrawEllipse(myPen, new Rectangle(x + i, y/ i, 100, 100));
formGraphics.DrawEllipse(myPen, new Rectangle(x1 / i, y1 + i, 100, 100));
System.Threading.Thread.Sleep(22);
}

解决方案

Refer:bouncing ball in c#[^]
The code for detecting boundary collision and reflection is reproduced as follows:

xC += xDelta;                                                   //move ball
            yC += yDelta;
            if ((xC+radius >= ClientSize.Width) || (xC - radius <= 0)) //check for wall hits
                xDelta = -xDelta;
            if ((yC+radius >= ClientSize.Height) || (yC - radius <= 0))
                yDelta = -yDelta;

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