meshoptimizer/meshopt_simplifier.module.d.ts

Mesh optimization library that makes meshes smaller and faster to render

// This file is part of meshoptimizer library and is distributed under the terms of MIT License.
// Copyright (C) 2016-2025, by Arseny Kapoulkine (arseny.kapoulkine@gmail.com)
export type Flags = 'LockBorder' | 'Sparse' | 'ErrorAbsolute' | 'Prune';

export const MeshoptSimplifier: {
	supported: boolean;
	ready: Promise<void>;

	compactMesh: (indices: Uint32Array) => [Uint32Array, number];

	simplify: (
		indices: Uint32Array,
		vertex_positions: Float32Array,
		vertex_positions_stride: number,
		target_index_count: number,
		target_error: number,
		flags?: Flags[]
	) => [Uint32Array, number];

	simplifyWithAttributes: (
		indices: Uint32Array,
		vertex_positions: Float32Array,
		vertex_positions_stride: number,
		vertex_attributes: Float32Array,
		vertex_attributes_stride: number,
		attribute_weights: number[],
		vertex_lock: Uint8Array | null,
		target_index_count: number,
		target_error: number,
		flags?: Flags[]
	) => [Uint32Array, number];

	getScale: (vertex_positions: Float32Array, vertex_positions_stride: number) => number;

	simplifyPoints: (
		vertex_positions: Float32Array,
		vertex_positions_stride: number,
		target_vertex_count: number,
		vertex_colors?: Float32Array,
		vertex_colors_stride?: number,
		color_weight?: number
	) => Uint32Array;

	simplifyPrune: (indices: Uint32Array, vertex_positions: Float32Array, vertex_positions_stride: number, target_error: number) => Uint32Array;
};