Random Functions

Assets/Script/FrameRateCounter.cs

@@ -0,0 +1,66 @@
+using UnityEngine;
+using TMPro;
+
+public class FrameRateCounter : MonoBehaviour
+{
+    [SerializeField]
+    TextMeshProUGUI display = default;
+
+    public enum DisplayMode { FPS, MS };
+
+    [SerializeField]
+    DisplayMode displayMode = DisplayMode.FPS;
+
+    [SerializeField, Range(0.1f, 2.0f)]
+    float sampleDuration = 1.0f;
+
+    int frames;
+
+    float duration;
+    float bestDuration = float.MaxValue;
+    float worstDuration = 0.0f;
+
+    private void Update()
+    {
+        var frameDuration = Time.unscaledDeltaTime;
+        frames++;
+        duration += frameDuration;
+
+        if (frameDuration < bestDuration)
+        {
+            bestDuration = frameDuration;
+        }
+        if (frameDuration > worstDuration)
+        {
+            worstDuration = frameDuration;
+        }
+
+        if (duration >= sampleDuration)
+        {
+            if (displayMode == DisplayMode.FPS)
+            {
+                display.SetText(
+                    "FPS\n{0:0}\n{1:0}\n{2:0}",
+                    1.0f / bestDuration,
+                    frames / duration,
+                    1.0f / worstDuration
+                );
+            }
+            else
+            {
+                display.SetText(
+                    "FPS\n{0:1}\n{1:1}\n{2:1}",
+                    1000.0f * bestDuration,
+                    1000.0f * duration / frames,
+                    1000.0f * worstDuration
+                );
+            }
+
+            frames = 0;
+            duration = 0.0f;
+            bestDuration = float.MaxValue;
+            worstDuration = 0.0f;
+        }
+    }
+
+}

Assets/Script/FrameRateCounter.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: db0de69e270b20648a07ce8befb7b34d
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Script/FunctionLibrary.cs

@@ -14,6 +14,22 @@ public static class FunctionLibrary
         return functions[(int)name];
     }
 
+    public static FunctionName GetNextFunctionName(FunctionName name)
+    {
+        return (int)name < functions.Length - 1 ? name + 1 : 0;
+    }
+
+    public static FunctionName GetRandomFunctionName()
+    {
+        return (FunctionName)Random.Range(0, functions.Length);
+    }
+
+    public static FunctionName GetRandomFunctionNameOtherThan(FunctionName name)
+    {
+        var choice = (FunctionName)Random.Range(1, functions.Length);
+        return choice == name ? 0 : choice;
+    }
+
     public static Vector3 Wave(float u, float v, float t)
     {
         Vector3 p;

Assets/Script/Graph.cs

@@ -11,8 +11,18 @@ public class Graph : MonoBehaviour
     [SerializeField]
     FunctionLibrary.FunctionName function = default;
 
+    public enum TransitionMode { Normal, Cycle, Random }
+
+    [SerializeField]
+    TransitionMode transitionMode = TransitionMode.Normal;
+
+    [SerializeField, Min(0.0f)]
+    float functionDuration = 1.0f;
+
     Transform[] points;
 
+    float duration = 0.0f;
+
     private void Awake()
     {
         var step = 2f / resolution;
@@ -28,6 +38,26 @@ public class Graph : MonoBehaviour
     }
 
     private void Update()
+    {
+        duration += Time.deltaTime;
+        if (duration >= functionDuration)
+        {
+            duration -= functionDuration;
+            PickNextFunction();
+        }
+        UpdateFunction();
+    }
+
+    private void PickNextFunction()
+    {
+        if (transitionMode == TransitionMode.Normal) return;
+        function = transitionMode == TransitionMode.Cycle ?
+            FunctionLibrary.GetNextFunctionName(function) :
+            FunctionLibrary.GetRandomFunctionNameOtherThan(function);
+
+    }
+
+    private void UpdateFunction()
     {
         FunctionLibrary.Function f = FunctionLibrary.GetFunction(function);
         var time = Time.time;
@@ -45,4 +75,5 @@ public class Graph : MonoBehaviour
             points[i].localPosition = f(u, v, time);
         }
     }
+    
 }