What is the best way to render thousands of identical objects?

Use InstancedMesh. It allows you to render a large number of objects with the same geometry and material in a single draw call, significantly improving performance.

Can I merge multiple geometries into one?

Yes, using BufferGeometryUtils.mergeGeometries you can combine multiple geometries into a single mesh to reduce draw calls and improve rendering speed.

How do I update geometry vertices after the mesh is created?

Modify the position attribute array and then set 'geometry.attributes.position.needsUpdate = true'. You should also call computeVertexNormals() if the shape change affects lighting.

How do I create a custom 3D shape in Three.js?

You can use BufferGeometry to define custom shapes by manually setting attributes like 'position', 'normal', and 'uv' using Float32Arrays for maximum GPU efficiency.

Three.js 3D Geometry

Name: Three.js 3D Geometry
Author: GGPrompts

byGGPrompts

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Game Development

Creates, manipulates, and optimizes 3D shapes, custom BufferGeometries, and high-performance instanced meshes within Three.js environments.

The Three.js Geometry skill provides comprehensive guidance for building 3D worlds, ranging from standard primitives like boxes and spheres to complex custom BufferGeometries with manual vertex manipulation. It enables developers to implement sophisticated path-based shapes through extrusion and lathed geometries, manage text rendering in 3D space, and significantly boost performance using InstancedMesh for rendering thousands of objects simultaneously. Whether you are building a data visualization, a web-based game, or an interactive product viewer, this skill ensures your 3D assets are structured efficiently and optimized for the GPU.

Key Features

01High-performance Instanced Mesh Rendering

02Path-based Extrusion and Tube Generation

03Standard Primitives (Box, Sphere, Torus, etc.)

04Custom BufferGeometry & Attribute Management

05Geometry Utilities for Merging and Normal Computation

061 GitHub stars

Use Cases

01Building procedural 3D environments and terrain

02Optimizing scenes with thousands of repeating 3D elements

03Developing interactive 3D UI components and data visualizations

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add ggprompts/my-plugins threejs-geometry

For use in Claude.ai and ChatGPT

Download Skill