mlx repaired

lib/mlx/ffi/python/example.py

@@ -0,0 +1,89 @@
+# ============================================================================
+# Codam Coding College, Amsterdam 2018-2025, All Rights Reserved.
+# See README in the root project for more information.
+# ============================================================================
+
+import signal
+import logging
+import random
+from libmlx import *
+
+# ============================================================================
+
+WIDTH = 512
+HEIGHT = 512
+
+# ============================================================================
+
+def ft_pixel(r, g, b, a):
+    """ Packs RGBA values into a single 32-bit integer. """
+    return (r << 24) | (g << 16) | (b << 8) | a
+
+@mlx_loop_hook_func
+def ft_randomize(param):
+    for i in range(image.contents.width):
+        for y in range(image.contents.height):
+            color = ft_pixel(
+                random.randint(0, 255),  # R
+                random.randint(0, 255),  # G
+                random.randint(0, 255),  # B
+                random.randint(0, 255)   # A
+            )
+            mlx.mlx_put_pixel(image, i, y, color)
+
+@mlx_loop_hook_func
+def ft_hook(param):
+    mlx_ptr = ctypes.cast(param, ctypes.POINTER(mlx_t))
+    if mlx.mlx_is_key_down(mlx_ptr, MLX_KEY_ESCAPE):
+        mlx.mlx_close_window(mlx_ptr)
+    if mlx.mlx_is_key_down(mlx_ptr, MLX_KEY_UP):
+        image.contents.instances[0].y -= 5
+    if mlx.mlx_is_key_down(mlx_ptr, MLX_KEY_DOWN):
+        image.contents.instances[0].y += 5
+    if mlx.mlx_is_key_down(mlx_ptr, MLX_KEY_LEFT):
+        image.contents.instances[0].x -= 5
+    if mlx.mlx_is_key_down(mlx_ptr, MLX_KEY_RIGHT):
+        image.contents.instances[0].x += 5
+
+def main():
+    # Better to encapsulate in a class, but keeping it simple for the example
+    global image
+    global mlx_ptr
+    
+    # Initialize MLX
+    mlx_ptr = mlx.mlx_init(500, 800, b"MLX42 Python Example", True)
+    if not mlx_ptr:
+        logging.critical(f"Error: {mlx.mlx_strerror(mlx.mlx_get_errno()).decode()}")
+        exit(1)
+    
+    # Create a new image
+    image = mlx.mlx_new_image(mlx_ptr, 128, 128)
+    if not image:
+        mlx.mlx_close_window(mlx_ptr)
+        logging.critical(f"Error: {mlx.mlx_strerror(mlx.mlx_get_errno()).decode()}")
+        exit(1)
+    
+    # Display the image in the window
+    if mlx.mlx_image_to_window(mlx_ptr, image, 0, 0) == -1:
+        mlx.mlx_delete_image(mlx_ptr, image)
+        mlx.mlx_close_window(mlx_ptr)
+        logging.critical(f"Error: {mlx.mlx_strerror(mlx.mlx_get_errno()).decode()}")
+        exit(1)
+    
+    mlx.mlx_loop_hook(mlx_ptr, ft_randomize, ctypes.cast(mlx_ptr, c_void_p))
+    mlx.mlx_loop_hook(mlx_ptr, ft_hook, ctypes.cast(mlx_ptr, c_void_p))
+
+    mlx.mlx_loop(mlx_ptr)
+    mlx.mlx_terminate(mlx_ptr)
+
+# When receiving SIGINT (Ctrl+C), terminate MLX properly
+# Otherwise we get issues related to callbacks as MLX is trying 
+# invoke it during termination.
+def signal_handler(sig, frame):
+    mlx.mlx_terminate(mlx_ptr)
+
+# ============================================================================
+
+if __name__ == "__main__":
+    signal.signal(signal.SIGINT, signal_handler)
+    main()