"""Single integrated keychain — bottle opener + whistle + head relief. Designed from scratch as ONE coherent shape (source files used only as size/proportion reference).""" import trimesh import numpy as np from shapely.geometry import box, Point, Polygon from shapely.ops import unary_union from pathlib import Path DIR = Path("/home/johnbarley/files/atydarytuvas") # ════════════════════════════════════════════════════════════════════ # DIMENSIONS # ════════════════════════════════════════════════════════════════════ LEN = 95 # total length X (left=opener end, right=whistle end) THK = 14 # thickness Z W_NARROW = 26 # width at opener end (Y) W_WIDE = 38 # width at whistle end (Y) # Bottle opener notch (left end) NOTCH_W = 24 # along X NOTCH_D = 9 # into the body from the +Y edge LIP_LEN = 4 # cap-grip lip length (Y direction inside notch) LIP_Z = 5 # lip thickness (Z; sits on top, leaving a 4mm gap below for cap to slide under) # Whistle (right end) — drilled into body CHAMBER_DIA = 16 # resonant chamber diameter CHAMBER_X = LEN/2 - 12 # chamber center X position WINDWAY_W = 8 # width of windway slit (X dir) WINDWAY_GAP = 1.0 # height of air gap (Z) — narrow slit MOUTH_LEN = 14 # length of mouthpiece tube projecting from edge # Keychain hole KEY_R = 2.5 KEY_X = -LEN/2 + 6 # Head relief HEAD_SCALE = 0.16 # ~22mm tall head HEAD_EMBOSS = 1.5 HEAD_POLY = np.array([ [20.64,129.16],[22.19,125.48],[25.11,120.10],[24.35,119.55],[21.68,119.13], [17.60,119.74],[13.58,121.22],[9.20,123.61],[1.16,128.80],[0.00,129.24], [3.23,118.60],[4.96,115.15],[8.53,109.31],[7.71,109.23],[6.35,110.00], [0.71,115.02],[7.73,101.83],[5.68,102.86],[0.94,106.98],[0.58,107.21], [0.59,106.93],[4.08,100.88],[9.80,92.86],[5.60,95.96],[4.89,96.19], [5.28,95.43],[9.54,89.18],[13.42,84.60],[8.95,86.99],[11.87,82.78], [15.28,79.35],[15.07,79.07],[14.36,79.15],[9.78,80.71],[13.12,77.61], [20.70,71.78],[22.93,69.58],[27.18,63.50],[28.27,61.02],[29.10,57.99], [30.04,51.36],[29.95,44.51],[23.89,29.26],[23.02,26.26],[84.03,0.87], [86.61,0.02],[87.02,0.05],[87.15,0.45],[87.23,9.58],[86.55,16.40], [85.11,22.65],[82.83,28.35],[79.52,34.18],[73.13,43.48],[72.35,45.47], [71.75,49.55],[71.85,54.83],[72.64,58.89],[74.04,62.47],[76.91,65.44], [79.86,67.43],[84.44,69.43],[92.14,72.05],[97.25,73.42],[104.11,74.78], [137.78,80.32],[140.69,81.44],[141.29,82.22],[141.39,83.06],[140.63,84.02], [135.55,85.44],[101.69,93.01],[94.93,94.82],[92.84,96.05],[88.78,99.20], [76.06,110.23],[72.20,112.93],[68.48,115.06],[57.27,119.31],[52.99,121.58], [50.37,120.24],[48.26,119.99],[45.94,120.66],[42.34,122.68],[42.91,120.15], [38.68,122.22],[32.91,125.64],[34.24,121.93],[33.64,121.85],[27.79,124.48], [23.86,127.06],[20.53,129.97],[20.61,129.30] ]) # ════════════════════════════════════════════════════════════════════ # 1. BODY — teardrop/paddle: narrow on left (opener), wide on right (whistle) # ════════════════════════════════════════════════════════════════════ print("Building body shape...") # 2D outline made of: trapezoid (left tapering to wide) + circle (right whistle area) # Use a polygon that tapers smoothly + a circle at +X end blended via union trap = Polygon([ (-LEN/2, -W_NARROW/2), (-LEN/2, W_NARROW/2), (CHAMBER_X, W_WIDE/2), (CHAMBER_X, -W_WIDE/2), ]) circ = Point(CHAMBER_X, 0).buffer(W_WIDE/2, resolution=64) body_2d = unary_union([trap, circ]) # Smooth rounding body_2d = body_2d.buffer(2, resolution=24, cap_style=1, join_style=1).buffer(-2) # Add overall corner rounding on left end body_2d = body_2d.buffer(3, resolution=24, join_style=1).buffer(-3, resolution=24, join_style=1) body = trimesh.creation.extrude_polygon(body_2d, height=THK) print(f" body: {body.extents.round(2).tolist()} watertight={body.is_watertight}") # ════════════════════════════════════════════════════════════════════ # 2. BOTTLE OPENER NOTCH — U-shape on +Y edge, with cap-grip overhang # ════════════════════════════════════════════════════════════════════ print("Cutting bottle opener notch...") notch_x = -LEN/2 + 4 + NOTCH_W/2 # left end, with margin # LOWER cut (full notch width × full depth), but only goes 60% up Z (leaves a top overhang lip) notch_lower_2d = box( notch_x - NOTCH_W/2, W_NARROW/2 - NOTCH_D, notch_x + NOTCH_W/2, W_NARROW/2 + 2, ) notch_lower = trimesh.creation.extrude_polygon(notch_lower_2d, height=THK*0.6 + 1) notch_lower.apply_translation([0, 0, -1]) body = trimesh.boolean.difference([body, notch_lower], engine='manifold') # UPPER cut (slightly shorter Y depth, so a lip remains on the inner notch wall) notch_upper_2d = box( notch_x - NOTCH_W/2, W_NARROW/2 - NOTCH_D + LIP_LEN, notch_x + NOTCH_W/2, W_NARROW/2 + 2, ) notch_upper = trimesh.creation.extrude_polygon(notch_upper_2d, height=THK*0.4 + 2) notch_upper.apply_translation([0, 0, THK*0.6 - 1]) body = trimesh.boolean.difference([body, notch_upper], engine='manifold') print(f" after notch: V={len(body.vertices)} watertight={body.is_watertight}") # ════════════════════════════════════════════════════════════════════ # 3. WHISTLE — drill resonant chamber + cut mouthpiece slit + form fipple edge # ════════════════════════════════════════════════════════════════════ print("Carving whistle features...") # 3a. Cylindrical resonant chamber through full thickness chamber = trimesh.creation.cylinder(radius=CHAMBER_DIA/2, height=THK + 2, sections=64) chamber.apply_translation([CHAMBER_X, 0, THK/2]) body = trimesh.boolean.difference([body, chamber], engine='manifold') # 3b. Mouthpiece — rectangular slit cut from +Y outside edge into the chamber. # The slit is OFFSET from the chamber's centerline (on -X side of chamber) so when air enters # from +Y direction, it passes the fipple (chamber wall at +X side of slit) and resonates inside. slit_x_center = CHAMBER_X - 4 # offset toward -X side slit_2d = box( slit_x_center - WINDWAY_W/2, -W_WIDE/2 + 2, # outside edge entry slit_x_center + WINDWAY_W/2, -CHAMBER_DIA/2 + 1, # ends inside chamber ) slit = trimesh.creation.extrude_polygon(slit_2d, height=WINDWAY_GAP) slit.apply_translation([0, 0, THK/2 - WINDWAY_GAP/2]) body = trimesh.boolean.difference([body, slit], engine='manifold') # 3c. Top opening — round hole on top of chamber (sound exit / blow-out) top_hole = trimesh.creation.cylinder(radius=3, height=THK + 2, sections=32) top_hole.apply_translation([CHAMBER_X + 4, 0, THK/2]) # offset from chamber center # Don't subtract — the chamber already provides the top opening. # (The cylindrical chamber goes all the way through Z, so it's open top and bottom.) print(f" after whistle: V={len(body.vertices)} watertight={body.is_watertight}") # ════════════════════════════════════════════════════════════════════ # 4. KEYCHAIN HOLE — small ∅5 hole at left end # ════════════════════════════════════════════════════════════════════ key_hole = trimesh.creation.cylinder(radius=KEY_R, height=THK + 2, sections=32) key_hole.apply_translation([KEY_X, 0, THK/2]) body = trimesh.boolean.difference([body, key_hole], engine='manifold') # ════════════════════════════════════════════════════════════════════ # 5. HEAD RELIEF — woodpecker silhouette embossed on top face # ════════════════════════════════════════════════════════════════════ print("Embossing head relief...") scaled_poly = HEAD_POLY * HEAD_SCALE scaled_poly -= [(scaled_poly[:, 0].min() + scaled_poly[:, 0].max()) / 2, (scaled_poly[:, 1].min() + scaled_poly[:, 1].max()) / 2] head_emboss = trimesh.creation.extrude_polygon(Polygon(scaled_poly), height=HEAD_EMBOSS) # Position centered between bottle opener notch (left) and chamber (right) on top face head_x = (notch_x + NOTCH_W/2 + CHAMBER_X - CHAMBER_DIA/2) / 2 + 2 head_emboss.apply_translation([head_x, 0, THK]) body = trimesh.boolean.union([body, head_emboss], engine='manifold') print(f"\n=== FINAL ===") print(f"V={len(body.vertices)} F={len(body.faces)} extents={body.extents.round(1).tolist()} vol={body.volume/1000:.1f}cm³ watertight={body.is_watertight}") out_stl = DIR / "atidarytuvas-v1.stl" out_3mf = DIR / "atidarytuvas-v1.3mf" body.export(out_stl) body.export(out_3mf) print(f"Saved: {out_stl.name}, {out_3mf.name}")