trimesh.visual.material¶

material.py¶

Store visual materials as objects.

Classes:

`Material`(args, *kwargs)
`PBRMaterial`([name, emissiveFactor, …])	Create a material for physically based rendering as specified by GLTF 2.0: https://git.io/fhkPZ
`SimpleMaterial`([image, diffuse, ambient, …])	Hold a single image texture.

Functions:

`empty_material`([color])	Return an empty material set to a single color
`from_color`(vertex_colors)	Convert vertex colors into UV coordinates and materials.
`pack`(materials, uvs[, deduplicate])	Pack multiple materials with texture into a single material.

class trimesh.visual.material.Material(*args, **kwargs)¶

Bases: object

Methods:

copy()

Attributes:

main_color

copy()¶

property main_color¶

class trimesh.visual.material.PBRMaterial(name=None, emissiveFactor=None, emissiveTexture=None, normalTexture=None, occlusionTexture=None, baseColorTexture=None, baseColorFactor=None, metallicFactor=None, roughnessFactor=None, metallicRoughnessTexture=None, doubleSided=False, alphaMode='OPAQUE', alphaCutoff=0.5)¶

Bases: trimesh.visual.material.Material

Create a material for physically based rendering as specified by GLTF 2.0: https://git.io/fhkPZ

Parameters with Texture in them must be PIL.Image objects

Methods:

`copy`()
`to_color`(uv)	Get the rough color at a list of specified UV coordinates.
`to_simple`()	Get a copy of the current PBR material as a simple material.

Attributes:

main_color

copy()¶

property main_color¶

to_color(uv)¶

Get the rough color at a list of specified UV coordinates.

Parameters: uv ((n, 2) float) – UV coordinates on the material
Returns
Return type: colors

to_simple()¶

Get a copy of the current PBR material as a simple material.

Returns: simple – Contains material information in a simple manner
Return type: SimpleMaterial

class trimesh.visual.material.SimpleMaterial(image=None, diffuse=None, ambient=None, specular=None, glossiness=None, **kwargs)¶

Bases: trimesh.visual.material.Material

Hold a single image texture.

Attributes:

`glossiness`
`main_color`	Return the most prominent color.

Methods:

`to_color`(uv)
`to_obj`([tex_name, mtl_name])	Convert the current material to an OBJ format material.
`to_pbr`()	Convert the current simple material to a PBR material.

property glossiness¶

property main_color¶: Return the most prominent color.

to_color(uv)¶

to_obj(tex_name=None, mtl_name=None)¶

Convert the current material to an OBJ format material.

Parameters

name (str or None) – Name to apply to the material

Returns

tex_name (str) – Name of material
mtl_name (str) – Name of mtl file in files
files (dict) – Data as {file name : bytes}

to_pbr()¶

Convert the current simple material to a PBR material.

Returns: pbr – Contains material information in PBR format.
Return type: PBRMaterial

trimesh.visual.material.empty_material(color=None)¶

Return an empty material set to a single color

Parameters: color (None or (3,) uint8) – RGB color
Returns: material – Image is a a one pixel RGB
Return type: SimpleMaterial

trimesh.visual.material.from_color(vertex_colors)¶

Convert vertex colors into UV coordinates and materials.

TODO : pack colors

Parameters

vertex_colors ((n, 3) float) – Array of vertex colors

Returns

material (SimpleMaterial) – Material containing color information
uvs ((n, 2) float) – UV coordinates

trimesh.visual.material.pack(materials, uvs, deduplicate=True)¶

Pack multiple materials with texture into a single material.

Parameters

materials ((n,) Material) – List of multiple materials
uvs ((n, m, 2) float) – Original UV coordinates

Returns

material (Material) – Combined material
uv ((p, 2) float) – Combined UV coordinates