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.
Install
npx skills add calesthio/OpenMontage --skill threejs-geometrynpx skills add calesthio/OpenMontage --skill threejs-geometry -a claude-code -gnpx skills add calesthio/OpenMontage --skill threejs-geometry -a codex -ggemini skills install https://github.com/calesthio/OpenMontage.git --path .agents/skills/threejs-geometrygh skill install calesthio/OpenMontage threejs-geometrygit clone --depth 1 https://github.com/calesthio/OpenMontage /tmp/calesthio__OpenMontage
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/calesthio__OpenMontage/.agents/skills/threejs-geometry ~/.claude/skills/threejs-geometry # Claude Code
cp -R /tmp/calesthio__OpenMontage/.agents/skills/threejs-geometry ~/.agents/skills/threejs-geometry # Codex, Cursor, Gemini CLI, Copilot, OpenCode