pyblenderSDIC.meshes.TriangleMesh3D.compute_vertex_normals

TriangleMesh3D.compute_vertex_normals() → None

Compute the normals of the vertices in the mesh.

The normals are computed as the average of the normals of the triangles that share each vertex. The result is stored in the vertex_normals attribute as a NumPy array of shape (N, 3), where N is the number of vertices and each row contains the normal vector of a vertex.

The normals are normalized to have unit length.

from pyblenderSDIC.mesh import TriangleMesh3D

# Create a TriangleMesh3D instance
mesh = TriangleMesh3D(vertices=..., triangles=...)

# Compute the normals of the vertices
mesh.compute_vertex_normals()

# The normals are now available in the `vertex_normals` attribute
mesh.vertex_normals

Note

The normals of triangles must be computed before calling this method.