FFT Selection

UnityProject/Assets/Editor/PdSpectrumBindEditor.cs

@@ -18,7 +18,7 @@ namespace cylvester
         public void OnEnable()
         {
             spectrumGenerator_ = new SpectrumGenerator(TextureWidth, TextureHeight);
-            rectangularSelection_ = new RectangularSelection(ref paintSpace_, TextureWidth, TextureHeight);
+            rectangularSelection_ = new RectangularSelection(TextureWidth, TextureHeight);
         }
 
         public override void OnInspectorGUI()
@@ -36,7 +36,7 @@ namespace cylvester
                     }
                     case EventType.MouseDrag:
                     {
-                        rectangularSelection_.Update(Event.current.mousePosition);
+                        rectangularSelection_.Update(Event.current.mousePosition, ref paintSpace_);
                         break;
                     }
                 }
@@ -53,10 +53,15 @@ namespace cylvester
             {
                 paintSpace_ = paintSpace;
                 behaviour.PdArray.Update();
-                spectrumGenerator_.Update(behaviour.PdArray.Data, ref rectangularSelection_.Selection);
+                behaviour.Energy = spectrumGenerator_.Update(behaviour.PdArray.Data, ref rectangularSelection_.Selection);
                 GUI.DrawTexture(paintSpace_, spectrumGenerator_.Spectrum);
             }
             
+            GUILayout.BeginHorizontal();
+            GUILayout.Label("Extracted Energy", EditorStyles.boldLabel);
+            GUILayout.Label(behaviour.Energy.ToString());
+            GUILayout.EndHorizontal();
+
             Repaint();
         }
     }

UnityProject/Assets/Editor/RectangularSelection.cs

@@ -7,7 +7,7 @@ namespace cylvester
         ref Rect Selection { get; }
 
         void Start(Vector2 mousePosition);
-        void Update(Vector2 mousePosition);
+        void Update(Vector2 mousePosition, ref Rect paintSpace);
     }
     
     public class RectangularSelection : IRectangularSelection
@@ -21,9 +21,8 @@ namespace cylvester
 
         public ref Rect Selection => ref selectionRect_;
         
-        public RectangularSelection(ref Rect paintSpace, int textureWidth, int textureHeight)
+        public RectangularSelection(int textureWidth, int textureHeight)
         {
-            paintSpace_ = paintSpace;
             textureWidth_ = textureWidth;
             textureHeight_ = textureHeight;
         }
@@ -34,14 +33,14 @@ namespace cylvester
             selectedArea_.y = mousePosition.y;
         }
 
-        public void Update(Vector2 mousePosition)
+        public void Update(Vector2 mousePosition, ref Rect paintSpace)
         {
             selectedArea_.width = mousePosition.x - selectedArea_.x;
             selectedArea_.height = mousePosition.y - selectedArea_.y;
-            var xPos = (selectedArea_.x - paintSpace_.x) / paintSpace_.width;
+            var xPos = (selectedArea_.x - paintSpace.x) / paintSpace.width;
-            var yPos = (selectedArea_.y - paintSpace_.y) / paintSpace_.height;
+            var yPos = (selectedArea_.y - paintSpace.y) / paintSpace.height;
-            var width = selectedArea_.width / paintSpace_.width;
+            var width = selectedArea_.width / paintSpace.width;
-            var height = selectedArea_.height / paintSpace_.height;
+            var height = selectedArea_.height / paintSpace.height;
 
             selectionRect_.x = xPos * textureWidth_;
             selectionRect_.y = yPos * textureHeight_;

UnityProject/Assets/Editor/SpectrumGenerator.cs

@@ -5,42 +5,47 @@ namespace cylvester
     interface ISpectrumGenerator
     {
         Texture2D Spectrum { get; }
-        void Update(float[] fftData, ref Rect selectionRect);
+        int Update(float[] fftData, ref Rect selectionRect);
     }
     
     public class SpectrumGenerator : ISpectrumGenerator
     {
         private Texture2D texture_;
-        private readonly int height_;
         public Texture2D Spectrum => texture_;
         
         public  SpectrumGenerator(int width, int height)
         {
             texture_ = new Texture2D(width, height);
-            height_ = height;
         }
         
-        public void Update(float[] fftData, ref Rect selectionRect)
+        public int Update(float[] fftData, ref Rect selectionRect)
         {
+            var numPixels = 0;
             for (var x = 0; x < texture_.width; x++)
             {
-                var magnitude = fftData[x];
+                var magnitude = fftData[x] * 20f;
                 for (var y = 0; y < texture_.height; y++)
                 {
+                    var mY = texture_.height - selectionRect.y;
 
-                    var alpha = 0.4f;
+                    var fillPixel = magnitude > y;
+                    var color =  fillPixel ? Color.green : Color.black;
                     if ((selectionRect.x < x && x < (selectionRect.x + selectionRect.width)) &&
-                        (selectionRect.y < y && y < (selectionRect.y + selectionRect.height)))
+                        (mY - selectionRect.height < y && y < mY))
                     {
-                        alpha = 1f;
+                        color.a = 1f;
+                        if (fillPixel)
+                            numPixels++;
                     }
-
+                    else
-                    var color = y > magnitude ? Color.white : Color.gray;
+                    {
-                    color.a = alpha;
+                        color.a = 0.2f;
-                    texture_.SetPixel(x, height_, color);
+                    }
+                    texture_.SetPixel(x, y, color);
                 }
             }
             texture_.Apply();
+            return numPixels;
         }
     }
 }

UnityProject/Assets/Scenes/Examples/PdBackendDemo/PdBackendDemo.unity

@@ -280,7 +280,6 @@ GameObject:
   serializedVersion: 6
   m_Component:
   - component: {fileID: 987772534}
-  - component: {fileID: 987772533}
   m_Layer: 0
   m_Name: PdBackend
   m_TagString: Untagged
@@ -288,20 +287,6 @@ GameObject:
   m_NavMeshLayer: 0
   m_StaticEditorFlags: 0
   m_IsActive: 1
---- !u!114 &987772533
-MonoBehaviour:
-  m_ObjectHideFlags: 0
-  m_CorrespondingSourceObject: {fileID: 0}
-  m_PrefabInstance: {fileID: 0}
-  m_PrefabAsset: {fileID: 0}
-  m_GameObject: {fileID: 987772532}
-  m_Enabled: 1
-  m_EditorHideFlags: 0
-  m_Script: {fileID: 11500000, guid: 3ba69cee3466a304d9d570268f717413, type: 3}
-  m_Name: 
-  m_EditorClassIdentifier: 
-  mainPatch: analyzer.pd
-  inchannels: 2
 --- !u!4 &987772534
 Transform:
   m_ObjectHideFlags: 0

UnityProject/Assets/Scripts/PdConnection/PdBackend.cs

@@ -50,7 +50,6 @@ namespace cylvester
         private void OnEnable()
         {
             PdProcess.Instance.Start(mainPatch, inchannels);
-            Thread.Sleep(500);
             
             levelMeterArray_ = new PdArray("levelmeters", NumMaxInputChannels);
             udpSender_ = new UdpSender("127.0.0.1", 54637);
@@ -65,11 +64,8 @@ namespace cylvester
 
         public void UpdateShmem()
         {
-            levelMeterArray_.Update();
+            if(PdProcess.Instance.Running)
-            
+                levelMeterArray_.Update();
         }
-        
-        
-
     }
 }

UnityProject/Assets/Scripts/PdConnection/PdProcess.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Diagnostics;
+using System.Threading;
 using UnityEngine;
 using Debug = UnityEngine.Debug;
 
@@ -9,6 +10,7 @@ namespace cylvester
     {
         void Start(string mainPatch, int numInputChannels);
         void Stop();
+        bool Running { get; }
     }
     
     public class PdProcess : IPdProcess
@@ -25,8 +27,13 @@ namespace cylvester
 
         public void Start(string mainPatch, int numInputChannels)
         {
+
             if (pdProcess_ != null)
-                return;
+            {
+                pdProcess_.Refresh();
+                if (!pdProcess_.HasExited)
+                    return;
+            }
 
             pdProcess_ = new Process();
             pdProcess_.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;
@@ -40,14 +47,33 @@ namespace cylvester
             {
                 throw new Exception("Pd process failed to start");
             }
+            Thread.Sleep(500);
             Debug.Log("Pd Process started");
         }
     
         public void Stop()
         {
-            pdProcess_?.Kill();
+            if (pdProcess_ == null)
+                return;
+            
+            pdProcess_.Kill();
             pdProcess_ = null;
             Debug.Log("Pd Process stopped");
+            
+        }
+
+        public bool Running
+        {
+            get
+            {
+                pdProcess_.Refresh();
+                if (pdProcess_ == null)
+                    return false;
+                if (pdProcess_.HasExited)
+                    return false;
+                
+                return true;
+            }
         }
     }
 }

UnityProject/Assets/Scripts/PdConnection/PdSpectrumBind.cs

@@ -5,7 +5,7 @@ namespace cylvester
     public interface IPdSpectrumBind
     {
         IPdArray PdArray { get; }
-        float TrimmedEnergy { get; }
+        int Energy { get; set; }
     }
     
     [ExecuteInEditMode]
@@ -16,18 +16,16 @@ namespace cylvester
         public int endBin;
         public float topClip;
         public float bottomClip;
-        public float trimmedEnergy = 0f;
-
-        public float TrimmedEnergy => trimmedEnergy;
         
         private PdArray pdArray_;
-        public IPdArray PdArray => pdArray_;
 
         private void Awake()
         {
             pdArray_ = new PdArray("fft_" + channel, 512);
         }
         
+        public IPdArray PdArray => pdArray_;
         
+        public int Energy { get; set; }
     }
 }