picogl.renderer.glmesh

Classes

GLMesh	GPU‐resident mesh: owns VAO/VBO/EBO/CBO/NBO for an indexed triangle mesh.
GLMeshold	GPU‐resident mesh: owns VAO/VBO/EBO/CBO/NBO for an indexed triangle mesh.

Module Contents

class picogl.renderer.glmesh.GLMesh(vertices: numpy.ndarray, faces: numpy.ndarray, colors: numpy.ndarray | None = None, normals: numpy.ndarray | None = None, uvs: numpy.ndarray | None = None, use_indices: bool = True)

GPU‐resident mesh: owns VAO/VBO/EBO/CBO/NBO for an indexed triangle mesh. It does not know anything about shaders or matrices.

vertices

indices

use_indices = True

colors

normals

uvs

vao: picogl.backend.modern.core.vertex.array.object.VertexArrayObject | None = None

index_count: int = 0

_expanded_vertices = None

_expanded_colors = None

_expanded_normals = None

_expanded_uvs = None

_expand_to_non_indexed() → None

Expand the mesh so that every triangle has its own copy of vertices/colors/normals/uvs. This converts indexed data (shared vertices) into a per-triangle vertex list suitable for glDrawArrays. The API remains the same; just keep the EBO empty and set index_count accordingly.

classmethod from_mesh_data(mesh: MeshData) → GLMesh

Construct a GLMesh from a MeshData container.

Parameters:

mesh (MeshData) – Must have .vbo (Nx3), .ebo (Mx1), optional .cbo (Nx3), .nbo (Nx3), uvs (Nx2)

Returns:

Ready-to-upload mesh (GPU buffers are allocated only when upload() is called).

Return type:

GLMesh

upload() → None

Allocate & fill GPU buffers.

bind()

unbind()

delete()

Free GPU resources.

__enter__()

__exit__(exc_type, exc, tb)

draw() → None

Draw the mesh.

class picogl.renderer.glmesh.GLMeshold(vertices: numpy.ndarray, faces: numpy.ndarray, colors: numpy.ndarray | None = None, normals: numpy.ndarray | None = None, uvs: numpy.ndarray | None = None)

GPU‐resident mesh: owns VAO/VBO/EBO/CBO/NBO for an indexed triangle mesh. It does not know anything about shaders or matrices.

vertices

indices

colors

normals

uvs

vao: picogl.backend.modern.core.vertex.array.object.VertexArrayObject | None = None

index_count: int = 0

classmethod from_mesh_data(mesh: MeshData) → GLMesh

Construct a GLMesh from a MeshData container.

Parameters:

mesh (MeshData) – Must have .vbo (Nx3), .ebo (Mx1), optional .cbo (Nx3), .nbo (Nx3), uvs (Nx2)

Returns:

Ready-to-upload mesh (GPU buffers are allocated only when upload() is called).

Return type:

GLMesh

upload() → None

Allocate & fill GPU buffers.

bind()

unbind()

delete()

Free GPU resources.

__enter__()

__exit__(exc_type, exc, tb)

draw() → None

Draw the mesh.