c toteutus hexa gridin generoinnista

test.py

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+import numpy as np
+import matplotlib.pyplot as plt
+from matplotlib.animation import FuncAnimation
+
+class DecayingSineWave:
+    def __init__(self, freq=5, decay=0.05, sample_rate=60):
+        self.freq = freq
+        self.decay = decay
+        self.sample_rate = sample_rate
+        self.triggers = []
+
+    def trigger(self, t):
+        self.triggers.append(t)
+
+    def sample(self, t):
+        value = 0.0
+        still_active = []
+        for start_time in self.triggers:
+            age = t - start_time
+            if age >= 0:
+                v = np.sin(2 * np.pi * self.freq * age / self.sample_rate) * np.exp(-self.decay * age)
+                value += v
+                if np.exp(-self.decay * age) > 1e-3:
+                    still_active.append(start_time)
+        self.triggers = still_active
+        return value
+
+# --- Initialize ---
+wave = DecayingSineWave(freq=5, decay=0.05, sample_rate=60)
+wave_array = np.zeros(512)
+time = [0]
+max_len = 512
+
+fig, ax = plt.subplots()
+line, = ax.plot(np.arange(512), wave_array, lw=2)
+trig_dots, = ax.plot([], [], 'ro', markersize=4)
+
+ax.set_xlim(0, 511)
+ax.set_ylim(-1.2, 1.2)
+ax.set_title("Click to Trigger Decaying Sine Wave")
+ax.set_xlabel("Sample Index (0 = current)")
+ax.set_ylabel("Amplitude")
+ax.grid(True)
+
+trigger_times = []
+
+# --- Click handler ---
+def on_click(event):
+    current_time = time[0]
+    wave.trigger(current_time)
+    trigger_times.append(current_time)
+
+fig.canvas.mpl_connect('button_press_event', on_click)
+
+# --- Animation update ---
+def update(frame):
+    global wave_array
+    current_time = time[0]
+
+    # Shift buffer to the right (older samples move toward the end)
+    wave_array = wave_array * 0.995
+    wave_array = np.roll(wave_array, 1)
+    # Insert new sample at index 0
+    wave_array[0] = wave.sample(current_time)
+    print (wave_array)
+
+    line.set_data(np.arange(512), wave_array)
+
+    # Trigger markers
+    visible_triggers = [tt for tt in trigger_times if current_time - 512 < tt <= current_time]
+    x = [current_time - tt for tt in visible_triggers]  # 0 = current time
+    y = [1.0 for _ in x]
+    trig_dots.set_data(x, y)
+
+    time[0] += 1
+    return line, trig_dots
+
+ani = FuncAnimation(fig, update, interval=1000 / 60, blit=True)
+plt.show()