using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Drawing.Imaging;
namespace waveDraw
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
Bitmap bitmap = new Bitmap(pictureBox1.Width, pictureBox1.Height, PixelFormat.Format32bppArgb);
Graphics g = Graphics.FromImage(bitmap);
Pen pen = new Pen(Color.Red, 2);
double x1 = 10;
double y1 = 0;
for (double x = 1; x < pictureBox1.Width; x++)
{
double y = Math.Sin(x / 180 * Math.PI) * 60;
g.DrawLine(pen, (float)x1, (float)y1 + 60, (float)(x / 0.46) + 10, (float)y + 60);
x1 = x / 0.46 + 10;
y1 = y;
}
pictureBox1.Image = bitmap;
Bitmap bitmap2 = new Bitmap(pictureBox2.Width, pictureBox2.Height, PixelFormat.Format32bppArgb);
Graphics g2 = Graphics.FromImage(bitmap2);
Pen pen2 = new Pen(Color.Red, 2);
double x2 = 10;
double y2 = 0;
for (double x = 1; x < pictureBox2.Width*8; x++)
{
double y = Math.Sin(x / 180 * Math.PI) * 100;
g2.DrawLine(pen2, (float)x2, (float)y2 + 120, (float)(x / 3.68) + 10, (float)y + 120);
x2 = x / 3.68 + 10;
y2 = y;
}
pictureBox2.Image = bitmap2;
}
}
}
第一条频率低,第二条频率高;幅度第二条高;
一不小心参数会搞成如下;有兴趣自己调吧;