Decimate Mesh

A ComfyUI node in geompack/decimation with 12 inputs and 2 outputs.

By PozzettiAndrea·Created 9 months ago·Updated 27 days ago· 209

Decimate Mesh

◄backend▾►

◄backend.target_face_count5000►

◄backend.quality_threshold0.30►

◄backend.preserve_boundarytrue►

◄backend.preserve_normaltrue►

◄backend.preserve_topologytrue►

◄backend.planar_quadricfalse►

◄backend.target_reduction0.50►

◄backend.aggressiveness7►

◄backend.cluster_threshold1.0►

◄backend.feature_angle15►

Categorygeompack/decimation

Inputs (12)

Name	Type	Default	Description
trimesh	TRIMESH		—
backend	COMBO		Decimation algorithm. quadric_edge_collapse=best quality, fast_simplification=fastest, vertex_clustering=aggressive, decimate_pro=topology-preserving
backend.target_face_countopt	INT	50004–10000000	Target number of output faces.
backend.quality_thresholdopt	FLOAT	0.300–1	Quality threshold for edge collapse. Higher = more conservative, better triangle quality.
backend.preserve_boundaryopt	COMBO	true	Preserve mesh boundary edges during decimation.
backend.preserve_normalopt	COMBO	true	Prevent face normal flips during decimation.
backend.preserve_topologyopt	COMBO	true	Preserve mesh topology (genus) during decimation.
backend.planar_quadricopt	COMBO	false	Add penalty for non-planar faces. Helps preserve flat regions.
backend.target_reductionopt	FLOAT	0.500.01–0.99	Fraction of faces to REMOVE. 0.5 = reduce to ~50%% of original faces, 0.9 = reduce to ~10%% of original.
backend.aggressivenessopt	INT	71–15	How aggressively to simplify. Higher = faster but lower quality. Default 7.
backend.cluster_thresholdopt	FLOAT	1.00.1–10	Clustering cell size as percentage of bounding box diagonal. Larger = more aggressive reduction.
backend.feature_angleopt	FLOAT	150–180	Feature angle threshold (degrees). Edges with dihedral angle above this are preserved.

Name	Type	Description
decimated_mesh	TRIMESH	—
info	STRING	—