- fixed audio visualizer not moving when frequency range is fairly low

- prevent audio visualizer from running when triangle count of the mesh is higher than frequency range
- reset package to v1.0.0, added CHANGELOG.md

Author: nixonyh

CHANGELOG.md

@@ -0,0 +1,3 @@
+## [1.0.0]
+
+- Initial release.

CHANGELOG.md.meta

@@ -34,11 +34,8 @@ void Start()
       InitAudioVisualizer();
     }
 
-    void Update()
-    {
-      UpdateAgentInteraction();
-      UpdateAudioVisualizer();
-    }
+    void Update() => UpdateAgentInteraction();
+    void FixedUpdate() => UpdateAudioVisualizer();
 
     internal static class ShaderPropertyId
     {

Runtime/AudioCore.cs

@@ -25,21 +25,18 @@ public class AudioProcessor
   {
     public AudioSource source;
     public AudioProfile profile;
-    public AudioProcessor(ref AudioSource source, ref AudioProfile profile)
-    {
-      this.source = source;
-      this.profile = profile;
-
-      Init();
-    }
 
     public float[] samples;
     public int freqSize;
     public int bandAverage;
     public int[] bandDistribution;
 
-    public void Init()
+    public AudioProcessor(ref AudioSource source, ref AudioProfile profile)
     {
+      Debug.Assert(profile.frequencyRange > profile.bandSize, "Number of triangles should not exceed frequency range.");
+      this.source = source;
+      this.profile = profile;
+
       samples = new float[profile.sampleSize];
 
       float freqInterval = AudioSettings.outputSampleRate/profile.sampleSize;
@@ -49,16 +46,16 @@ public void Init()
       for (int s=0; s < profile.sampleSize; s++)
       {
         currFreq += freqInterval;
-        if (currFreq < profile.freqRange) freqSize ++;
+        if (currFreq < profile.frequencyRange) freqSize ++;
         else break;
       }
 
-      bandAverage = freqSize/profile.bandSize;
+      bandAverage = Mathf.Max(1, freqSize/profile.bandSize);
 
       bandDistribution = new int[profile.bandSize+1];
       bandDistribution[0] = 0;
-      for (int b=1; b < profile.bandSize+1; b++)
-        bandDistribution[b] = bandAverage + b*bandAverage;
+      for (int b=0; b < profile.bandSize; b++)
+        bandDistribution[b+1] = bandAverage + b*bandAverage;
     }
 
     public void SampleSpectrum() => source.GetSpectrumData(samples, profile.channel, profile.window);

Runtime/AudioProcessor.cs

@@ -29,9 +29,8 @@ public class AudioProfile
     public int sampleSize;
     public float power;
     public float scale;
-    public float sensitivity;
     public int smoothingIterations;
-    [Range(5000, 20000)] public int freqRange;
+    [Range(5000, 20000)] public int frequencyRange;
     [HideInInspector] public int bandSize;
   }
 }

Runtime/AudioProfile.cs

@@ -80,15 +80,15 @@ private void InitAudioVisualizer()
       // audio processing attributes
       samples = new NativeArray<float>(audioProfile.sampleSize, Allocator.Persistent);
       bandDistribution = new NativeArray<int>(audioProfile.bandSize+1, Allocator.Persistent);
+      bandDistribution.CopyFrom(audioProcessor.bandDistribution);
+      bandDistribution.AsReadOnly();
 
       prevBands = new NativeArray<float>(totalTriangles, Allocator.Persistent);
-      MathUtil.SetNativeArray<float>(ref prevBands, 0);
+      prevBands.CopyFrom(prevBands);
 
       bandVelocities = new NativeArray<float>(totalTriangles, Allocator.Persistent);
-      MathUtil.SetNativeArray<float>(ref bandVelocities, 0);
+      bandVelocities.CopyFrom(bandVelocities);
 
-      MathUtil.CopyToNativeArray<int>(ref audioProcessor.bandDistribution, ref bandDistribution);
-      bandDistribution.AsReadOnly();
       sampleMeshData.Dispose();
     }
 
@@ -97,7 +97,7 @@ private void UpdateAudioVisualizer()
       audioProcessor.SampleSpectrum();
 
       // copy audio samples to native array samples
-      MathUtil.CopyToNativeArray<float>(ref audioProcessor.samples, ref samples);
+      samples.CopyFrom(audioProcessor.samples);
 
       AudioMeshVisualizer audioMeshVisualizer = new AudioMeshVisualizer
       {

Runtime/AudioVisualizer.cs

@@ -11,7 +11,7 @@
   "license": "GPL v3.0",
   "unity": "2021.1",
   "unityRelease": "0f1",
-  "version": "1.1.1",
+  "version": "1.0.0",
   "dependencies": {
     "voxell.util": "1.1.0",
     "com.unity.visualeffectgraph": "10.3.2"