Render frames 1-48 of https://render.janction.jp/samples/ex24_gear_train.py at 1280x720 on EEVEE as an MP4, studio preset (edit TEETH for other ratios).
Reproducible JANCTION operator example. Source script and measured render settings are included; edit the script and render it again with your own key.
Rendered from benchmark run through JANCTION Render
| resolution | 1280 x 720 |
|---|---|
| frames | 48 (1-48) |
| samples | 64 |
| engine | Eevee / Blender 5.0 |
| lighting | studio |
| GPU time | 54.78 s (GPU/CUDA) |
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"""JANCTION Render example 24: three meshing gears turning at their gear ratios (48 frames, EEVEE, MP4).
Reproduce: render_final(scene_url="https://render.janction.jp/samples/ex24_gear_train.py",
frame_start=1, frame_end=48, width=1280, height=720, engine="eevee", output="mp4",
environment="studio")
Gears are built from a disc plus box teeth; each gear turns at -teeth_driver/teeth so the teeth stay
meshed (change TEETH to try other ratios). Linear keyframes, so the loop is seamless.
"""
import math
import bpy
for ob in list(bpy.data.objects):
bpy.data.objects.remove(ob, do_unlink=True)
scene = bpy.context.scene
scene.frame_start = 1
scene.frame_end = 48
scene.render.fps = 24
bpy.context.preferences.edit.keyframe_new_interpolation_type = "LINEAR"
MODULE = 0.12 # 歯の大きさ（ピッチ円の半径 = MODULE * 歯数 / 2）
TEETH = [24, 12, 18] # 左から: 駆動・小・中
def material(name, color, metallic=0.9, roughness=0.3):
mat = bpy.data.materials.new(name)
bsdf = mat.node_tree.nodes["Principled BSDF"]
bsdf.inputs["Base Color"].default_value = (*color, 1.0)
bsdf.inputs["Metallic"].default_value = metallic
bsdf.inputs["Roughness"].default_value = roughness
return mat
def gear(name, teeth, location, mat):
r = MODULE * teeth / 2
bpy.ops.mesh.primitive_cylinder_add(vertices=max(32, teeth * 4), radius=r - MODULE * 0.4, depth=0.25, location=location)
body = bpy.context.active_object
body.name = name
parts = [body]
for i in range(teeth):
a = 2 * math.pi * i / teeth
bpy.ops.mesh.primitive_cube_add(size=1, location=(location[0] + r * math.cos(a), location[1] + r * math.sin(a), location[2]))
t = bpy.context.active_object
t.scale = (MODULE * 1.1, MODULE * 0.75, 0.25)
t.rotation_euler = (0, 0, a)
parts.append(t)
bpy.ops.object.select_all(action="DESELECT")
for p in parts:
p.select_set(True)
bpy.context.view_layer.objects.active = body
bpy.ops.object.join()
bpy.ops.object.transform_apply(location=False, rotation=True, scale=True)
body.data.materials.append(mat)
bevel = body.modifiers.new("Bevel", "BEVEL")
bevel.width = 0.015
bevel.segments = 2
bpy.ops.object.shade_auto_smooth()
# 軸は黒い別の部品（歯車の子にして一緒に回す）
bpy.ops.mesh.primitive_cylinder_add(vertices=32, radius=r * 0.16, depth=0.36, location=location)
axle = bpy.context.active_object
axle.name = name + "Axle"
axle.data.materials.append(AXLE)
axle.parent = body
axle.matrix_parent_inverse = body.matrix_world.inverted()
return body
AXLE = material("Axle", (0.02, 0.02, 0.025), metallic=0.6, roughness=0.4)
mats = [material("Brass", (0.85, 0.62, 0.25)), material("Steel", (0.75, 0.77, 0.8)), material("Copper", (0.85, 0.42, 0.28))]
radii = [MODULE * t / 2 for t in TEETH]
x = [0.0]
x.append(x[0] + radii[0] + radii[1])
x.append(x[1] + radii[1] + radii[2])
center = (x[0] + x[2]) / 2
gears = []
for i, (t, xi) in enumerate(zip(TEETH, x)):
g = gear(f"Gear{i + 1}", t, (xi - center, 0, 0), mats[i])
gears.append(g)
# 噛み合わせ: 隣の歯車は逆回り、角速度は歯数に反比例。2 枚目は半歯ずらして歯と溝を合わせる
turn = 2 * math.pi / 4 # 駆動の歯車が 48 コマで 1/4 回転
phase = [0.0, math.pi / TEETH[1], 0.0]
for i, g in enumerate(gears):
speed = (TEETH[0] / TEETH[i]) * (-1) ** i
g.rotation_euler = (0, 0, phase[i])
g.keyframe_insert("rotation_euler", frame=1)
g.rotation_euler = (0, 0, phase[i] + turn * speed * 48 / 47)
g.keyframe_insert("rotation_euler", frame=48)
bpy.ops.mesh.primitive_plane_add(size=30, location=(0, 0, -0.14))
floor = bpy.context.active_object
floor.data.materials.append(material("Floor", (0.08, 0.085, 0.1), metallic=0.0, roughness=0.6))
bpy.ops.object.light_add(type="AREA", location=(2, -3, 5))
key = bpy.context.active_object
key.data.energy = 900
key.data.size = 4
bpy.ops.object.camera_add(location=(0.6, -11.0, 8.6))
cam = bpy.context.active_object
cam.data.lens = 50
target = bpy.data.objects.new("Target", None)
scene.collection.objects.link(target)
target.location = (0, 0, 0)
track = cam.constraints.new("TRACK_TO")
track.target = target
scene.camera = cam
ChatGPT · Claude · Grok · Perplexity
Use JANCTION Render (MCP server https://render.janction.jp/mcp) to make a render like this one: https://render.janction.jp/r/fflq0m6ist . First ask me what to change (my own model or scene, colors, camera), preview first, and ask me before the final render.
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Rendered with JANCTION Render, a Blender render farm for AI agents (new keys start free). Render your own .blend or bpy script: see how to connect, or add the MCP URL https://render.janction.jp/mcp?src=share to Claude.ai, ChatGPT, Cursor or any MCP client. Report a problem with this page at the support page.
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JANCTION Render v0.4.209 · JasmyLab Inc. · Updated 2026-10-26 · Tested with Blender 3.6 / 4.2 / 4.5 / 5.0 / 5.2, JANCTION Render 0.4.209 · 日本語