【发布时间】：2023-01-12 04:48:05
【问题描述】：
让我们编写一个“Windows 窗体应用程序”类型的 C# 程序来创建一个 模拟信号传输的调制和幅度解调的应用 模拟。 载波信号、调制器信号、调制信号将以图形方式显示/ 解调和信号频谱密度的函数。 我试图给图片框上色并显示它们，但没有显示它们的内容。 我的目标是绘制要在 4 个图片框中显示的 4 条线。
My code:
using System;
using System.Windows.Forms;
using System.Drawing;
using static System.Math;
static class Program
{
[STAThread]
public static void Main()
{
Application.SetCompatibleTextRenderingDefault(true);
Application.Run(new ModulationDemodulationExample());
Application.EnableVisualStyles();
}
}
public class ModulationDemodulationExample : Form
{
// Declare controls and variables
private const int SignalLength = 100;
private PictureBox carrierSignalBox = new PictureBox();
private PictureBox modulatorSignalBox = new PictureBox();
private PictureBox modulatedSignalBox = new PictureBox();
private PictureBox demodulatedSignalBox = new PictureBox();
private double[] carrierSignal = new double[SignalLength];
private double[] modulatorSignal = new double[SignalLength];
private double[] modulatedSignal = new double[SignalLength];
private double[] demodulatedSignal = new double[SignalLength];
private double carrierFrequency = 2.0;
private Bitmap carrierSignalBmp;
private Bitmap modulatorSignalBmp;
private Bitmap modulatedSignalBmp;
private Bitmap demodulatedSignalBmp;
public ModulationDemodulationExample()
{
InitializeComponent();
}
private void InitializeComponent()
{
// Initialize form and controls
Text = "Modulation and Demodulation Simulator";
Size = new Size(800, 600);
PictureBox carrierSignalBox = new PictureBox()
{
Location = new Point(10, 10),
Size = new Size(360, 180),
Visible = true,
Name = "Carrier Signal"
};
PictureBox modulatorSignalBox = new PictureBox()
{
Location = new Point(10, 200),
Size = new Size(360, 180),
Visible = true,
Name = "Modulator Signal"
};
PictureBox modulatedSignalBox = new PictureBox()
{
Location = new Point(400, 10),
Size = new Size(360, 180),
Visible = true,
Name = "Modulated Signal"
};
PictureBox demodulatedSignalBox = new PictureBox()
{
Location = new Point(400, 200),
Size = new Size(360, 180),
Visible = true,
Name = "Demodulated Signal"
};
Controls.Add(carrierSignalBox);
Controls.Add(modulatorSignalBox);
Controls.Add(modulatedSignalBox);
Controls.Add(demodulatedSignalBox);
GenerateSignal();
CreateBitmaps();
DrawSignals();
}
private void GenerateSignal()
{
for (int i = 0; i < SignalLength; i++)
{
carrierSignal[i] = Math.Sin(2 * Math.PI * carrierFrequency * i);
modulatorSignal[i] = Math.Sin(2 * Math.PI * i);
modulatedSignal[i] = carrierSignal[i] * modulatorSignal[i];
demodulatedSignal[i] = modulatedSignal[i] * carrierSignal[i];
}
}
private void CreateBitmaps()
{
carrierSignalBmp = new Bitmap(carrierSignalBox.Width, carrierSignalBox.Height);
modulatorSignalBmp = new Bitmap(modulatorSignalBox.Width, modulatorSignalBox.Height);
modulatedSignalBmp = new Bitmap(modulatedSignalBox.Width, modulatedSignalBox.Height);
demodulatedSignalBmp = new Bitmap(demodulatedSignalBox.Width, demodulatedSignalBox.Height);
//carrierSignalBox.Image = carrierSignalBmp;
carrierSignalBox.DrawToBitmap(carrierSignalBmp, carrierSignalBox.ClientRectangle);
modulatorSignalBox.Image = modulatorSignalBmp;
modulatedSignalBox.Image = modulatedSignalBmp;
demodulatedSignalBox.Image = demodulatedSignalBmp;
}
private void DrawSignals()
{
DrawSignal(carrierSignalBox, carrierSignal, Color.Blue);
DrawSignal(modulatorSignalBox, modulatorSignal, Color.Red);
DrawSignal(modulatedSignalBox, modulatedSignal, Color.Green);
DrawSignal(demodulatedSignalBox, demodulatedSignal, Color.Black);
}
void DrawSignal(PictureBox pictureBox, double[] signal, Color color)
{
// Get the graphics object for the PictureBox
var graphics = pictureBox.CreateGraphics();
// Clear the PictureBox
graphics.Clear(Color.White);
// Set the pen color
var pen = new Pen(color);
// Scale the signal's values to the size of the PictureBox
var yScale = (double)pictureBox.Height / 2.0;
var xScale = (double)pictureBox.Width / (double)signal.Length;
// Draw the signal
for (int i = 0; i < signal.Length - 1; i++)
{
var x1 = (int)(i * xScale);
var y1 = (int)(yScale + (signal[i] * yScale));
var x2 = (int)((i + 1) * xScale);
var y2 = (int)(yScale + (signal[i + 1] * yScale));
graphics.DrawLine(pen, x1, y1, x2, y2);
}
}
}
我创建了 4 个信号，但我无法以形式显示它们，我希望每个信号都显示在 PictureBox 中。
【问题讨论】：
-
如果不知道你现在遇到了什么问题，很难说。你什么都没看到吗？空白
PictureBox控件？请使用更多信息编辑此问题。我的第一个直觉是InitializeComponent不是调用您的 3 种方法的正确位置。应该在初始化之后做好，也许在Form.Shown的handler中。 -
欢迎来到堆栈溢出！您在哪一方面遇到了问题？创建一个仅关注该方面的 minimal reproducible example（例如，您在 PictureBoxes 上画线有困难吗？）并从问题中消除其他不相关的代码（例如，与信号和调制器有关的任何代码）不仅使问题更容易理解，而且答案，它可能会帮助您自己找出答案。或者至少这就是我多次成功的方式。
-
我编辑了文本发布，我尝试为图片框着色并显示它们，但不是它们的内容。
标签： c# .net windows forms signals