程序化生成的富士山浮空岛与鸟居飞行场景

Build a procedural fantasy world in code as one web page using Three.js, with no external assets. Start in a golden-hour mountain valley with pine forests, a small lake, a wooden fence and warm low sun. Then fly the camera along a path up into the sky past floating rock islands linked by thin bridges or cables, each topped with a red torii gate, with waterfalls pouring off the edges into a sea of clouds. In the distance show a snow-capped Mt. Fuji silhouette, with layered purple and pink haze and a sunset gradient sky. Add soft fog, volumetric-looking light and slow drifting debris. Include a small control panel with presets such as golden hour, night and cinematic camera, sliders for fog and clouds, and a reset button. Style: moody, painterly low-poly shapes with a warm orange-to-violet palette. Done when the cinematic ascent plays smoothly from valley to the gates and the panel changes the lighting live.