Tourbillon Watch Movement

Build an interactive Three.js webpage showing a tourbillon mechanical watch movement with an exploded view and working mechanical animation. Use the 48-part CAD assembly from Thingiverse under CC BY 3.0 and retain the required attribution. Prepare the parts in Blender with semantic names, reduced geometry and PBR materials: brushed steel bridges, brass gears, blued screws and ruby bearings. Record each gear’s pivot and export a GLB model with a bilingual part-name and function map. Provide a continuous 0–100% exploded-view slider, adding offsets to the assembled positions and separating coaxial gear layers without intersections. Drive the mechanism from a shared clock: rotate the gear train at its transmission ratios, oscillate the balance and spring, animate the pallet fork with sharp steps and pauses, and rotate the tourbillon cage. Include pause, time scrubbing and speed controls. Selecting a part should show its name and function; support gear-train, escapement and tourbillon filters and an orbit camera. Check the assembly from multiple angles and verify animation angles at fixed times. Replace the tourbillon wristwatch movement with a 19th-century pocket-watch movement: larger bridges, blued hands, an engraved balance cock and an exposed mainspring barrel, keeping the exploded-view slider and working gear animation structure. 

Build an interactive Three.js webpage showing a tourbillon mechanical watch movement with an exploded view and working mechanical animation. Use the 48-part CAD assembly from Thingiverse under CC BY 3.0 and retain the required attribution. Prepare the parts in Blender with semantic names, reduced geometry and PBR materials: brushed steel bridges, brass gears, blued screws and ruby bearings. Record each gear’s pivot and export a GLB model with a bilingual part-name and function map. Provide a continuous 0–100% exploded-view slider, adding offsets to the assembled positions and separating coaxial gear layers without intersections. Drive the mechanism from a shared clock: rotate the gear train at its transmission ratios, oscillate the balance and spring, animate the pallet fork with sharp steps and pauses, and rotate the tourbillon cage. Include pause, time scrubbing and speed controls. Selecting a part should show its name and function; support gear-train, escapement and tourbillon filters and an orbit camera. Check the assembly from multiple angles and verify animation angles at fixed times. Switch all interface text, part info cards and function descriptions to English, and keep a Chinese-English part glossary that can be toggled with a button.