.. meta::
    :description: Code snippets Mesh Creation

How to Create a Mesh from a numpy Array
=======================================

In this example, a Mesh is created from a Numpy array.::

    import numpy as np
    from ORSModel import ArrayDouble, FaceVertexMesh

    # Define the vertices for a triangle (can be expanded to more vertices)
    vertices = ArrayDouble.createArrayFromNumpyArray(np.array([0.0, 0.0, 0.0,  # Vertex 0
                                                               1.0, 0.0, 0.0,  # Vertex 1
                                                               0.5, 1.0, 0.0]))  # Vertex 2

    # Define the edges for a triangle (can be expanded to more edges)
    edges = ArrayDouble.createArrayFromNumpyArray(np.array([0, 1, 2]))

    # Create the mesh object
    mesh = FaceVertexMesh()
    # Define the time dimension
    mesh.setTSize(1)

    # Set vertices for the mesh, dynamically set the size based on the numpy array
    meshVertices = mesh.getVertices(0)  # Get vertex array for the mesh
    numVertices = vertices.getSize()  # Get number of elements in the vertices array
    meshVertices.setSize(numVertices)
    for i in range(numVertices):
        meshVertices.atPut(i, vertices.at(i))

    # Set edges (connect the vertices to form triangles), dynamically set size
    meshEdges = mesh.getEdges(0)  # Get edges array for the mesh
    numEdges = edges.getSize()  # Get number of elements in the edges array
    meshEdges.setSize(numEdges)
    for i in range(numEdges):
        meshEdges.atPut(i, edges.at(i))

    # Publish the mesh
    mesh.publish()