Initial commit · oscillatory.net/rotating-subjective-necker-cube-avatar@d66118b

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.env

··· 1 + BLUESKY_HANDLE= 2 + BLUESKY_APP_PASSWORD=

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.gitignore

··· 1 + # Python-generated files 2 + __pycache__/ 3 + *.py[oc] 4 + build/ 5 + dist/ 6 + wheels/ 7 + *.egg-info 8 + 9 + # Virtual environments 10 + .venv 11 + 12 + # env 13 + .env

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.python-version

··· 1 + 3.12

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README.md

··· 1 + Renders a rotating subjective Necker cube and dynamically updates a BlueSky avatar based on the current time. 2 + 3 + Samples: 4 + 5 + <img src="imgs/cube-0.png" alt="cube, roll 0" width="128px" height="128px" /> 6 + <img src="imgs/cube-7.png" alt="cube, roll 7" width="128px" height="128px" /> 7 + <img src="imgs/cube-14.png" alt="cube, roll 14" width="128px" height="128px" /> 8 + <img src="imgs/cube-21.png" alt="cube, roll 21" width="128px" height="128px" /> 9 + <img src="imgs/cube-28.png" alt="cube, roll 28" width="128px" height="128px" /> 10 + <br /> 11 + <img src="imgs/cube-35.png" alt="cube, roll 35" width="128px" height="128px" /> 12 + <img src="imgs/cube-42.png" alt="cube, roll 42" width="128px" height="128px" /> 13 + <img src="imgs/cube-49.png" alt="cube, roll 49" width="128px" height="128px" /> 14 + <img src="imgs/cube-56.png" alt="cube, roll 56" width="128px" height="128px" /> 15 + <img src="imgs/cube-63.png" alt="cube, roll 63" width="128px" height="128px" /> 16 + <br /> 17 + <img src="imgs/cube-70.png" alt="cube, roll 70" width="128px" height="128px" /> 18 + <img src="imgs/cube-77.png" alt="cube, roll 77" width="128px" height="128px" /> 19 + <img src="imgs/cube-84.png" alt="cube, roll 84" width="128px" height="128px" /> 20 + <img src="imgs/cube-91.png" alt="cube, roll 91" width="128px" height="128px" /> 21 + <img src="imgs/cube-98.png" alt="cube, roll 98" width="128px" height="128px" />

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avatar_cube.py

··· 1 + from __future__ import annotations 2 + from dotenv import load_dotenv 3 + import os, io, math, datetime as dt 4 + import numpy as np 5 + import matplotlib.pyplot as plt 6 + from matplotlib.patches import Circle 7 + from atproto import Client, models 8 + 9 + # ─────────────────────────── configuration ─────────────────────────────── 10 + START_DATETIME = dt.datetime(2025, 4, 21, 0, 0, 0, tzinfo=dt.timezone.utc) 11 + ZOOM = 100.0 # px per 2 cube units (smaller than interactive ver.) 12 + CIRCLE_R = 17 # px 13 + LINE_W = 6 # px 14 + PITCH_DEG = 20 # fixed roll 15 + YAW_DEG = 45 # fixed yaw 16 + 17 + # ─────────────────────────── math helpers ──────────────────────────────── 18 + 19 + def rot_xyz(roll: float, pitch: float, yaw: float) -> np.ndarray: 20 + """Build 3×3 rotation matrix for intrinsic X‑(roll), Y‑(pitch), Z‑(yaw).""" 21 + cx, cy, cz = np.cos([roll, pitch, yaw]) 22 + sx, sy, sz = np.sin([roll, pitch, yaw]) 23 + Rx = np.array([[1, 0, 0], [0, cx, -sx], [0, sx, cx]]) 24 + Ry = np.array([[cy, 0, sy], [0, 1, 0], [-sy, 0, cy]]) 25 + Rz = np.array([[cz, -sz, 0], [sz, cz, 0], [0, 0, 1]]) 26 + return Rz @ Ry @ Rx 27 + 28 + def project_ortho(P: np.ndarray) -> np.ndarray: 29 + """Orthographic projection + scaling to screen space (px).""" 30 + return P[:, :2] * (ZOOM / 2) 31 + 32 + # cube geometry (world‑space) 33 + V = np.array([[-1, -1, -1], [1, -1, -1], [1, 1, -1], [-1, 1, -1], 34 + [-1, -1, 1], [1, -1, 1], [1, 1, 1], [-1, 1, 1]], dtype=float) 35 + EDGES = [(0, 1), (1, 2), (2, 3), (3, 0), 36 + (4, 5), (5, 6), (6, 7), (7, 4), 37 + (0, 4), (1, 5), (2, 6), (3, 7)] 38 + 39 + # extent for a fixed frame (covers any rotation) 40 + CUBE_RADIUS_PX = math.sqrt(3) * (ZOOM / 2) 41 + HALF_FRAME = CUBE_RADIUS_PX + CIRCLE_R + 5 42 + 43 + # ─────────────────────────── rendering core ────────────────────────────── 44 + 45 + def render_frame(roll_deg: float) -> bytes: 46 + """Return PNG bytes of cube at given pitch (deg).""" 47 + # Matplotlib figure — square, no border 48 + fig = plt.figure(figsize=(2, 2), dpi=256, facecolor="white") 49 + ax = fig.add_axes([0, 0, 1, 1]) # full‑bleed axes 50 + ax.set_aspect('equal', adjustable='box') 51 + ax.axis('off') 52 + 53 + # rotate & project 54 + R = rot_xyz(math.radians(roll_deg), math.radians(PITCH_DEG), math.radians(YAW_DEG)) 55 + verts2d = project_ortho(V @ R.T) 56 + 57 + # draw circles 58 + for x, y in verts2d: 59 + ax.add_patch(Circle((x, y), CIRCLE_R, color='black', zorder=1)) 60 + 61 + # draw full edges (round caps) 62 + for i, j in EDGES: 63 + (x1, y1), (x2, y2) = verts2d[[i, j]] 64 + ax.plot([x1, x2], [y1, y2], lw=LINE_W, 65 + color='white', solid_capstyle='round', zorder=2) 66 + 67 + # fixed limits to keep size constant 68 + ax.set_xlim(-HALF_FRAME, HALF_FRAME) 69 + ax.set_ylim(-HALF_FRAME, HALF_FRAME) 70 + ax.invert_yaxis() 71 + 72 + buf = io.BytesIO() 73 + fig.savefig(buf, format='png', dpi=256, bbox_inches='tight', pad_inches=0) 74 + plt.close(fig) 75 + return buf.getvalue() 76 + 77 + # ─────────────────────────── avatar update logic ───────────────────────── 78 + 79 + def compute_deg(now_utc: dt.datetime | None = None) -> int: 80 + now = now_utc or dt.datetime.now(dt.timezone.utc) 81 + elapsed_min = int((now - START_DATETIME).total_seconds() // 60) 82 + steps = elapsed_min // 15 # integer 15‑min buckets 83 + deg = (steps * 7) % 360 # wrap at 360 84 + return deg 85 + 86 + 87 + def update_bluesky_avatar(now_utc: dt.datetime | None = None, dry_run=False): 88 + handle = os.getenv('BLUESKY_HANDLE') 89 + app_pw = os.getenv('BLUESKY_APP_PASSWORD') 90 + if not handle or not app_pw: 91 + raise RuntimeError('BLUESKY_HANDLE and BLUESKY_APP_PASSWORD must be set') 92 + 93 + roll = compute_deg(now_utc) 94 + png = render_frame(roll) 95 + 96 + if dry_run: 97 + with open(f'cube-{roll}.png', 'wb') as f: 98 + f.write(png) 99 + return 100 + 101 + client = Client() 102 + client.login(handle, app_pw) 103 + 104 + old_description = old_display_name = old_banner = None 105 + 106 + try: 107 + current_profile_record = client.app.bsky.actor.profile.get(client.me.did, 'self') 108 + current_profile = current_profile_record.value 109 + swap_record_cid = current_profile_record.cid 110 + old_description = current_profile.description 111 + old_display_name = current_profile.display_name 112 + old_banner = current_profile.banner 113 + old_avatar = current_profile.avatar 114 + 115 + print(old_avatar) 116 + if old_avatar: 117 + old_avatar_ref = old_avatar.ref 118 + print(old_avatar_ref) 119 + 120 + except BadRequestError: 121 + current_profile = swap_record_cid = None 122 + 123 + # upload blob 124 + blob_resp = client.upload_blob(png) 125 + 126 + 127 + client.com.atproto.repo.put_record( 128 + models.ComAtprotoRepoPutRecord.Data( 129 + collection=models.ids.AppBskyActorProfile, 130 + repo=client.me.did, 131 + rkey='self', 132 + swap_record=swap_record_cid, 133 + record=models.AppBskyActorProfile.Record( 134 + avatar=blob_resp.blob, 135 + banner=old_banner, 136 + description=old_description, 137 + display_name=old_display_name, 138 + ), 139 + ) 140 + ) 141 + 142 + 143 + print(f"updated avatar → roll={roll}° (elapsed {((dt.datetime.now(dt.timezone.utc)-START_DATETIME).total_seconds()//60)} min)") 144 + 145 + 146 + def sweep_through_images(): 147 + INCREMENT = dt.timedelta(minutes=15) 148 + timestamps = [START_DATETIME + i * INCREMENT for i in range(15)] 149 + for ts in timestamps: 150 + update_bluesky_avatar(now_utc=ts, dry_run=True) 151 + 152 + 153 + # ─────────────────────────── CLI entry point ──────────────────────────── 154 + if __name__ == '__main__': 155 + load_dotenv() 156 + #sweep_through_images() 157 + update_bluesky_avatar(dry_run=False)

imgs/cube-0.png