Three.js geometry creation - built-in shapes, BufferGeometry, custom geometry, instancing. Use when creating 3D shapes, working with vertices, building custom meshes, or optimizing with instanced rendering.

Three.js 几何体创建 - 内置形状、BufferGeometry、自定义几何体、实例化。适用于创建三维形状、处理顶点、构建自定义网格或通过实例化渲染进行优化