Add RLCD animations and screensavers

voice_animations/breathing_idle.py

@@ -0,0 +1,80 @@
+# Standalone MicroPython Voice Animation: Breathing Idle
+# Exposes run(text="", frames=...) and runs automatically if executed directly.
+import time
+import math
+
+try:
+    import board_config
+    display = getattr(board_config, 'display_instance', None)
+except Exception:
+    board_config = None
+    display = None
+
+def draw_center_text(d, msg, y, w, scale=1, c=1):
+    char_w = 8 * scale
+    x = max(0, (w - len(msg) * char_w) // 2)
+    if hasattr(d, 'text_large') and scale > 1:
+        try:
+            d.text_large(msg, x, y, scale, c)
+            return
+        except Exception:
+            pass
+    d.text(msg, x, y, c)
+
+def run(text="", frames=100):
+    if not display:
+        print("board_config.display_instance is not available. Skipping animation.")
+        return
+
+    width = getattr(display, 'width', 400)
+    height = getattr(display, 'height', 300)
+    cx, cy = width // 2, height // 2
+
+    label = text if text else "READY"
+    frame = 0
+
+    try:
+        while True:
+            if frames is not None and frames > 0 and frame >= frames:
+                break
+
+            display.clear(0)
+
+            # Cosine-based breathing curve: slow and smooth, scaling from 0 to 1 and back
+            breath_scale = 0.5 + 0.5 * math.cos(frame * 0.07)
+
+            # Draw three concentric breathing boxes
+            # Base radii are scaled dynamically
+            r1 = int(24 + 32 * breath_scale)
+            r2 = int(14 + 18 * breath_scale)
+            r3 = int(6 + 8 * breath_scale)
+
+            # Outer box
+            display.rect(cx - r1, cy - r1, r1 * 2, r1 * 2, 1)
+            # Middle box
+            display.rect(cx - r2, cy - r2, r2 * 2, r2 * 2, 1)
+            # Inner solid core
+            display.fill_rect(cx - r3, cy - r3, r3 * 2, r3 * 2, 1)
+
+            # Draw small accent dots at the corners of the outer breathing box
+            accent = r1 + 8
+            display.fill_rect(cx - accent - 2, cy - accent - 2, 4, 4, 1)
+            display.fill_rect(cx + accent - 2, cy - accent - 2, 4, 4, 1)
+            display.fill_rect(cx - accent - 2, cy + accent - 2, 4, 4, 1)
+            display.fill_rect(cx + accent - 2, cy + accent - 2, 4, 4, 1)
+
+            # Draw centered text label at the bottom
+            draw_center_text(display, label, height - 30, width, scale=1, c=1)
+
+            display.show()
+            frame += 1
+
+            try:
+                time.sleep_ms(65)
+            except AttributeError:
+                time.sleep(0.065)
+    except KeyboardInterrupt:
+        print("Animation interrupted by user.")
+
+if __name__ in ('__main__', '__name__'):
+    run()