C#绘制正弦曲线
题目是这样的，就是让任务管理器里面的 CPU 曲线以一条平衡的百分之五十的直线显现出来，
然后再写另外一个程序让 CPU 曲线以正弦曲线的形式显现出来，
呵呵，很有趣吧，昨晚看着看着都入迷了，不过由于太晚，所以没有太注意，
不过有一个我还是有点好奇的，因为我以前没有写过正弦曲线出来，
所以早上一起来便写正弦曲线，当然这条正弦曲线并不能使 CPU 曲线以正弦曲线显示，
而是纯粹的以一张图片来返回正弦曲线
如果哪位牛人有兴趣的话，那绝对可以尝试一下上面的那个题目，这种问题都想得出，太牛逼了，呵呵
大致代码如下
try
{
using (Bitmap sinImage = new Bitmap(360, 120))
{
using (Graphics myGraphics = Graphics.FromImage(sinImage))
{
myGraphics.Clear(Color.White);
myGraphics.SmoothingMode = SmoothingMode.AntiAlias;
Rectangle r1 = new Rectangle(0, 0, 360, 20);
Rectangle r2 = new Rectangle(0, 20, 360, 40);
Rectangle r3 = new Rectangle(0, 60, 360, 40);
Rectangle r4 = new Rectangle(0, 100, 360, 20);
Brush brush1 = new SolidBrush(Color.OrangeRed);
Brush brush2 = new SolidBrush(Color.SkyBlue);
Brush brush3 = new SolidBrush(Color.Pink);
Brush brush4 = new SolidBrush(Color.YellowGreen);
myGraphics.FillRectangle(brush1, r1);
myGraphics.FillRectangle(brush2, r2);
myGraphics.FillRectangle(brush2, r3);
myGraphics.FillRectangle(brush1, r4);
myGraphics.DrawString("0", new Font("宋体", 8), brush1, new PointF(3, 65));
myGraphics.DrawString("90", new Font("宋体", 8), brush1, new PointF(85, 65));
myGraphics.DrawString("180", new Font("宋体", 8), brush1, new PointF(170, 65));
myGraphics.DrawString("360", new Font("宋体", 8), brush1, new PointF(336, 65));
Point myPoint = new Point(0, 60);
float sinValue = 0.0F;
for (int i = 0; i < 360; i++)
{
sinValue = Convert.ToSingle(Math.Sin(Convert.ToSingle((i * Math.PI) / 180))) * 40;
//事实上，这里根本无需注意 sinValue 的正负
//当其为负时， 60-sinValue 则会变大
Point thisPoint = new Point(i, Convert.ToInt32(60 - sinValue));
myGraphics.DrawLine(new Pen(brush3), thisPoint, myPoint);
myPoint = thisPoint;
}
}
using (System.IO.MemoryStream ms = new System.IO.MemoryStream())
{
context.Response.ContentType = "Image/PNG";
context.Response.Clear();
context.Response.BufferOutput = true;
sinImage.Save(ms, ImageFormat.Png);
ms.Flush();
context.Response.BinaryWrite(ms.GetBuffer());
}
}
}
catch
{
return;
}
补充：软件开发 , C# ,
