Module mtl 

Wavefront MTL material library parser.

Parses .mtl files referenced by OBJ mtllib directives, extracting diffuse color (Kd) into MtlMaterial structs that can be mapped to 3MF BaseMaterial resources.

Supported Directives

• newmtl <name> - Define a new material
• Kd <r> <g> <b> - Diffuse color (floats 0.0-1.0, clamped)

Ignored Directives

• Ka, Ks, Ns, Ke, illum, Ni, d, Tr - Silently skipped
• map_Kd and other map_* - Warning printed to stderr, skipped

Defaults

Materials without a Kd line default to gray (#808080FF).

Structs

MtlMaterial

A parsed MTL material with a name and display color.

Functions

parse_mtl

Parses an MTL material library from a reader.

parse_mtl_file

Parses an MTL file from a filesystem path.