diff --git a/poisson-disk-sampling.py b/poisson-disk-sampling.py
index d569c1d..5886d78 100644
--- a/poisson-disk-sampling.py
+++ b/poisson-disk-sampling.py
@@ -51,7 +51,7 @@ def player_input(w: World):
         w.points.append(p)
         idx = int(p.y // cell_size * cols + p.x // cell_size)
         if idx < len(w.grid):
-            w.grid[idx] = 1
+            w.grid[idx] = p
     if RL.is_key_pressed(RL.KEY_SPACE):
         w.debug_draw = not w.debug_draw
     if RL.is_key_pressed(RL.KEY_ENTER):
diff --git a/rect-radius.py b/rect-radius.py
new file mode 100644
index 0000000..8adb5cc
--- /dev/null
+++ b/rect-radius.py
@@ -0,0 +1,80 @@
+import pyray as RL
+from pyray import (Rectangle as Rect, Vector2 as Vec2, Vector3 as Vec3, Camera3D, BoundingBox, Color)
+import math
+import pdb
+import random
+from typing import Optional, Tuple, List
+from dataclasses import dataclass, field
+
+def dump(struct):
+    s = f"{RL.ffi.typeof(struct)}: (".replace('<ctype ', '').replace('>', '')
+    for field in dir(struct):
+        data = struct.__getattribute__(field)
+        if str(data).startswith("<cdata"):
+            data = dump(data)
+        s += f"{field}:{data} "
+    s += ")"
+    return s
+
+screen_width = 1024
+screen_height = 768
+
+@dataclass
+class World:
+    cam: Camera3D
+    frame_count: int = 0
+
+def init() -> World:
+    cam = Camera3D(Vec3(0, 10, 10), Vec3(0, 0, 0), Vec3(0, 1, 0), 45, RL.CAMERA_PERSPECTIVE)
+    return World(cam)
+
+def player_input(w: World):
+    pass
+
+def update(w: World):
+    pass
+
+def draw_2d(w: World):
+    radius = 100
+    grid_size = 13
+    rect_size = radius / math.sqrt(2)
+    half_size = rect_size // 2
+    mid_size = 5 * rect_size
+    mid_x = screen_width  // 2 - mid_size // 2
+    mid_y = screen_height // 2 - mid_size  // 2
+    mid_rect = Rect(mid_x, mid_y, mid_size, mid_size)
+    RL.draw_rectangle_rec(mid_rect, (Color)(45, 30, 45, 255))
+    center_rect = Rect(screen_width // 2 - half_size, screen_height // 2 - half_size, rect_size, rect_size)
+    RL.draw_rectangle_rec(center_rect, (Color)(100, 30, 45, 255))
+    for row in range(grid_size):
+        for col in range(grid_size):
+            x = screen_width // 2 - half_size + (row - grid_size // 2) * rect_size
+            y = screen_height // 2 - half_size + (col - grid_size // 2) * rect_size
+            rect = Rect(x, y, rect_size, rect_size)
+            RL.draw_rectangle_lines_ex(rect, 2, RL.GREEN)
+    mouse_pos = RL.get_mouse_position()
+    if mouse_pos.x < screen_width // 2 - half_size: mouse_pos.x = screen_width // 2 - half_size
+    if mouse_pos.x > screen_width // 2 + half_size: mouse_pos.x = screen_width // 2 + half_size
+    if mouse_pos.y < screen_height // 2 - half_size: mouse_pos.y = screen_height // 2 - half_size
+    if mouse_pos.y > screen_height // 2 + half_size: mouse_pos.y = screen_height // 2 + half_size
+    RL.draw_circle_v(mouse_pos, 5, RL.WHITE)
+    RL.draw_circle_lines_v(mouse_pos, radius, RL.RED)
+
+
+RL.init_window(screen_width, screen_height, "Starter");
+RL.set_target_fps(60)
+
+w = init()
+while not RL.window_should_close():
+    player_input(w)
+    update(w)
+
+    # Drawing
+    RL.begin_drawing()
+    RL.clear_background((Color)(30, 30, 45, 255))
+
+    draw_2d(w)
+
+    RL.end_drawing()
+    w.frame_count += 1
+