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Geometries

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Geometry defines the shape of 3D objects — the vertices, edges, and faces that make up every mesh. Three.js provides a library of built-in shapes and a powerful BufferGeometry API for creating anything you can imagine.

Built-in Geometries
Boxes, spheres, planes, tori, and more — the ready-made shapes that ship with Three.js.
Buffer Geometry
How BufferGeometry stores vertex data in typed arrays for efficient GPU transfer.
Custom Geometry
Building geometry from scratch with custom vertices, normals, UVs, and indices.