Module validator 

Validation logic for 3MF models

This module contains functions to validate 3MF models according to the 3MF Core Specification requirements. Validation ensures that:

• All object IDs are unique and positive
• Triangle vertex indices reference valid vertices
• Triangles are not degenerate (all three vertices must be distinct)
• Build items reference existing objects
• Material, color group, and base material references are valid

Functions

detect_circular_components

Detects circular component references using depth-first search

get_property_resource_size

Gets the size (number of properties) in a property resource group

validate_beam_lattice

Validates beam lattice structures in model objects

validate_boolean_operations

Validates boolean operation shapes and their references

validate_build_references

Validates that all build items reference valid objects

validate_color_formats

Validates color formats in color groups

validate_component_chain

N_XPX_0803_01: Validate no component reference chains across multiple model parts

validate_component_properties

Validates that objects with components don’t have pid/pindex attributes

validate_component_references

Validates that all component references are valid and non-circular

validate_displacement_extension

Validates displacement extension resources and references

validate_duplicate_resource_ids

Validate that resource IDs are unique within their namespaces

validate_duplicate_uuids

Validates that all UUIDs in the model are unique

validate_material_references

Validates material property group references and uniqueness

validate_mesh_geometry

Validates mesh geometry for all objects in the model

validate_mesh_manifold

Validates that mesh edges are manifold (each edge shared by at most 2 triangles)

validate_model

Validate a parsed 3MF model

validate_model_with_config

Validate a parsed 3MF model with custom extension validation

validate_multiproperties_references

Validate color formats in color groups

validate_object_triangle_materials

Validates triangle material properties for a specific object

validate_planar_transform

Validate that a transform is planar (no Z-axis rotation or shear)

validate_production_extension

Validates production extension path format and usage

validate_production_extension_with_config

Validate production extension requirements with parser configuration

validate_production_paths

Validate displacement extension usage

validate_production_uuids_required

Validate transform matrices for build items

validate_resource_ordering

Validate resource ordering

validate_slice

Validates a single slice’s polygons and vertices

validate_slice_extension

Validate slice extension requirements

validate_slices

Validates slice stacks and their slice data

validate_texture_paths

Validate boolean operation references

validate_triangle_properties

Validate triangle property attributes

validate_uuid_formats

Validate UUID format per RFC 4122

validate_volumetric_extension

Validates volumetric extension resources and references