Play and explore "Create a real-time interactive 3D particle Christmas tree system with Three.js. Requirements: Gesture Interaction: Control the "blooming" size and branch expansion of the particle tree by detecting the tension and opening/closing of both hands through the camera. (e.g., opening hands makes the tree expand/explode into snow; closing hands brings it back to a solid tree form). Shape Templates: Provide a control panel to switch between different particle formations: Classic Spruce Tree Abstract Spiral Tree Giant Snowflake Snowman Floating Gift Box Customization: Support a color selector to adjust the "ornament" particles (light colors) and a secondary slider to control the density of the falling snow background. Performance & Physics: Particles need to respond to gesture changes in real-time with fluid physics. Add a "star" particle at the top that anchors the structure. UI Design: The interface should be simple, modern, and semi-transparent (frosted glass effect) with a subtle festive theme.". An AI-generated interactive game/tool created by june on MyPopku.