irtk.scene.Mesh

class irtk.scene.Mesh(v: torch.Tensor | ndarray | List | Tuple, f: torch.Tensor | ndarray | List | Tuple, uv: torch.Tensor | ndarray | List | Tuple, fuv: torch.Tensor | ndarray | List | Tuple, mat_id: str | None = None, to_world: torch.Tensor | ndarray | List | Tuple = torch.eye, use_face_normal: bool = True, can_change_topology: bool = False, radiance: torch.Tensor | ndarray | List | Tuple | None = None)

A class representing a mesh.

__init__(v: torch.Tensor | ndarray | List | Tuple, f: torch.Tensor | ndarray | List | Tuple, uv: torch.Tensor | ndarray | List | Tuple, fuv: torch.Tensor | ndarray | List | Tuple, mat_id: str | None = None, to_world: torch.Tensor | ndarray | List | Tuple = torch.eye, use_face_normal: bool = True, can_change_topology: bool = False, radiance: torch.Tensor | ndarray | List | Tuple | None = None) → None

Initializes a Mesh object.

Parameters:

  • v (TensorLike) – The vertex positions (float, shape (num_v, 3)).

  • f (TensorLike) – The face indices (int, shape (num_f, 3)).

  • uv (TensorLike) – The uv coordinates (float, shape (num_uv, 2)).

  • fuv (TensorLike) – The uv face indices (int, shape (num_f, 3)).

  • mat_id (Optional[str]) – The material ID.

  • to_world (TensorLike) – The transformation matrix to world coordinates (float).

  • use_face_normal (bool) – Whether to use face normal.

  • can_change_topology (bool) – Whether the topology can be changed. This might lead to certain optimizations.

  • radiance (Optional[TensorLike]) – The radiance if used as an emitter (float, shape (3, )).

classmethod from_file(filename: str, mat_id: str | None = None, to_world: torch.Tensor | ndarray | List | Tuple = torch.eye, use_face_normal: bool = True, can_change_topology: bool = False, radiance: torch.Tensor | ndarray | List | Tuple | None = None, flip_tex: bool = True) → Mesh

Creates a Mesh object from a file.

Parameters:

  • filename (str) – The filename of the mesh.

  • mat_id (Optional[str]) – The material ID.

  • to_world (TensorLike) – The transformation matrix to world coordinates (float).

  • use_face_normal (bool) – Whether to use face normal.

  • can_change_topology (bool) – Whether the topology can be changed.

  • radiance (Optional[TensorLike]) – The radiance if used as an emitter (float, shape (3, )).

  • flip_tex (bool) – Whether to flip the texture coordinates.

Returns:

A Mesh object.

Return type:

Mesh