柚子快報(bào)激活碼778899分享：c# 畫一個(gè)正弦函數(shù)

http://yzkb.51969.com/

1.概要

c# 畫一個(gè)正弦函數(shù)

2.代碼

using System;

using System.Drawing;

using System.Windows.Forms;

public class SineWaveForm : Form

{

private const int Width = 800;

private const int Height = 600;

private const double Amplitude = 100.0;

private const double Period = 200.0;

protected override void OnPaint(PaintEventArgs e)

{

base.OnPaint(e);

Graphics g = e.Graphics;

Pen pen = new Pen(Color.Blue, 2);

for (double x = 0; x < Width; x += 1)

{

double y = Height / 2 - Amplitude * Math.Sin((2 * Math.PI / Period) * x);

int yInt = (int)y;

if (yInt >= 0 && yInt < Height)

{

// 繪制點(diǎn)來(lái)模擬連續(xù)的線（對(duì)于更平滑的線，使用g.DrawCurve或g.DrawBezier）

g.DrawEllipse(pen, (float)x, (float)yInt, 2, 2);

}

}

pen.Dispose();

}

public SineWaveForm()

{

this.DoubleBuffered = true; // 減少繪圖時(shí)的閃爍

this.ClientSize = new Size(Width, Height);

}

[STAThread]

static void Main()

{

Application.EnableVisualStyles();

Application.SetCompatibleTextRenderingDefault(false);

Application.Run(new SineWaveForm());

}

}

3.運(yùn)行結(jié)果

?

柚子快報(bào)激活碼778899分享：c# 畫一個(gè)正弦函數(shù)

http://yzkb.51969.com/

推薦鏈接