[VertexDeclaration class The declaration of a custom defined vertex’s structure The VertexDeclaration type exposes the following members: Constructors Constructor Description __init__(self) Constructs a new instance of VertexDeclaration Properties Property Description sealed A VertexDeclaration will be sealed when its been used by TriMesh1 or [TriMesh`](/3d/python-net/aspose.threed.entities/trimesh), no more modifications is allowed. count Gets the count of all fields defined in this VertexDeclaration size The size in byte of the vertex structure. Indexer Name Description [index] Methods Method Description clear(self) Clear all fields. add_field(self, data_type, semantic, index, alias) Add a new vertex field from_geometry(, geometry, use_float) Create a VertexDeclaration based on a Geometry’s layout. compare_to(self, other) Compares this instance to a specified object and returns an indication of their relative values. See Also module aspose.threed.utilities class Geometry class TriMesh class VertexDeclaration]