Improve code structure

AudioVisualizer/MainForm.cs

@@ -1,12 +1,7 @@
 using NAudio.Wave;
+
 using System;
 using System.Collections.Generic;
-using System.ComponentModel;
-using System.Data;
-using System.Drawing;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
 using System.Windows.Forms;
 
 namespace AudioVisualizer
@@ -19,8 +14,8 @@ namespace AudioVisualizer
         }
 
         private IWaveIn waveIn;
-        private static int fftLength = 1024; // Has to be powers of two!
+        private static readonly int fftLength = 1024; // Has to be powers of two!
-        private SampleAggregator sampleAggregator = new SampleAggregator(fftLength);
+        private readonly SampleAggregator sampleAggregator = new SampleAggregator(fftLength);
 
         private void MainForm_Load(object sender, EventArgs e)
         {
@@ -47,8 +42,6 @@ namespace AudioVisualizer
             chart1.Series[0].ChartType = System.Windows.Forms.DataVisualization.Charting.SeriesChartType.Column;
             chart1.Series[0]["PointWidth"] = "1";
 
-
-
             //Set waveIn to WasapiLoopbackCapture to capture the system Audio
             waveIn = new WasapiLoopbackCapture();
 
@@ -57,16 +50,14 @@ namespace AudioVisualizer
             waveIn.StartRecording();
         }
 
-
+        private void OnDataAvailable(object sender, WaveInEventArgs e)
-        void OnDataAvailable(object sender, WaveInEventArgs e)
         {
-            if (this.InvokeRequired)
+            if (InvokeRequired)
             {
-                this.BeginInvoke(new EventHandler<WaveInEventArgs>(OnDataAvailable), sender, e);
+                BeginInvoke(new EventHandler<WaveInEventArgs>(OnDataAvailable), sender, e);
             }
             else
             {
-
                 byte[] buffer = e.Buffer;
                 int bytesRecorded = e.BytesRecorded;
                 int bufferIncrement = waveIn.WaveFormat.BlockAlign;
@@ -79,9 +70,9 @@ namespace AudioVisualizer
             }
         }
 
-        List<double> lastFft = new List<double>();
+        private List<double> lastFft = new List<double>();
 
-        void FftCalculated(object sender, FftEventArgs e)
+        private void FftCalculated(object sender, FftEventArgs e)
         {
             List<double> fft = new List<double>();
 
@@ -100,7 +91,7 @@ namespace AudioVisualizer
                 //Dampening the fft
                 for (int i = 0; i < fft.Count; i++)
                 {
-                    if(fft[i] > lastFft[i] || bufferValueNumericUpDown.Value == 0)
+                    if (fft[i] > lastFft[i] || bufferValueNumericUpDown.Value == 0)
                     {
                         fft[i] = (fft[i] + lastFft[i]) / 2;
                     }
@@ -114,7 +105,7 @@ namespace AudioVisualizer
             int barCount = (int)barCountNumericUpDown.Value;
             List<double> scaledFft = new List<double>();
 
-            //Calculate voulume of bars
+            //Calculate volume of bars
             if (barCount > 0)
             {
                 int count = fft.Count / barCount;
@@ -136,6 +127,7 @@ namespace AudioVisualizer
             }
 
             #region flatten
+
             int flattenValue = (int)flattenValueNumericUpDown.Value;
 
             //flatten the values
@@ -147,7 +139,9 @@ namespace AudioVisualizer
                     for (int j = 0; j < flattenValue; j++)
                     {
                         if (i + j < scaledFft.Count)
+                        {
                             temp += scaledFft[i + j];
+                        }
                     }
                     scaledFft[i] = temp / flattenValue;
                 }
@@ -161,15 +155,17 @@ namespace AudioVisualizer
                     for (int j = 0; j < flattenValue; j++)
                     {
                         if (i - j >= 0)
+                        {
                             temp += scaledFft[i - j];
+                        }
                     }
                     scaledFft[i] = temp / flattenValue;
                 }
             }
-            #endregion
 
+            #endregion flatten
 
-            //Clear and add cuurent data to chart1
+            //Clear and add current data to chart1
             lastFft = fft;
             chart1.Series[0].Points.Clear();
 

AudioVisualizer/Program.cs

@@ -1,18 +1,15 @@
 using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Threading.Tasks;
 using System.Windows.Forms;
 
 namespace AudioVisualizer
 {
-    static class Program
+    internal static class Program
     {
         /// <summary>
         /// Der Haupteinstiegspunkt für die Anwendung.
         /// </summary>
         [STAThread]
-        static void Main()
+        private static void Main()
         {
             Application.EnableVisualStyles();
             Application.SetCompatibleTextRenderingDefault(false);

AudioVisualizer/SampleAggregator.cs

@@ -1,10 +1,6 @@
 using NAudio.Dsp;
+
 using System;
-using System.Collections.Generic;
-using System.Diagnostics;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
 
 namespace AudioVisualizer
 {
@@ -12,16 +8,16 @@ namespace AudioVisualizer
     *This class is not created by me(Stone_Red)
     *I forgot who mad this class if i find the source of this class i will credit the original creator
     */
-    class SampleAggregator
+    internal class SampleAggregator
     {
         // FFT
         public event EventHandler<FftEventArgs> FftCalculated;
         public bool PerformFFT { get; set; }
-        private Complex[] fftBuffer;
+        private readonly Complex[] fftBuffer;
-        private FftEventArgs fftArgs;
+        private readonly FftEventArgs fftArgs;
         private int fftPos;
-        private int fftLength;
+        private readonly int fftLength;
-        private int m;
+        private readonly int m;
 
         public SampleAggregator(int fftLength)
         {
@@ -29,13 +25,13 @@ namespace AudioVisualizer
             {
                 throw new ArgumentException("FFT Length must be a power of two");
             }
-            this.m = (int)Math.Log(fftLength, 2.0);
+            m = (int)Math.Log(fftLength, 2.0);
             this.fftLength = fftLength;
-            this.fftBuffer = new Complex[fftLength];
+            fftBuffer = new Complex[fftLength];
-            this.fftArgs = new FftEventArgs(fftBuffer);
+            fftArgs = new FftEventArgs(fftBuffer);
         }
 
-        bool IsPowerOfTwo(int x)
+        private bool IsPowerOfTwo(int x)
         {
             return (x & (x - 1)) == 0;
         }
@@ -61,7 +57,7 @@ namespace AudioVisualizer
     {
         public FftEventArgs(Complex[] result)
         {
-            this.Result = result;
+            Result = result;
         }
         public Complex[] Result { get; private set; }
     }