How to use the pygltflib.FLOAT function in pygltflib

accessor = glb.accessors[prim.indices]
        assert accessor.type == "SCALAR"
        assert not accessor.sparse
        assert accessor.componentType == pygltflib.UNSIGNED_SHORT
        nindices = accessor.count
        bv = glb.bufferViews[accessor.bufferView]
        data = glb._glb_data[bv.byteOffset : bv.byteOffset + bv.byteLength]
        triangles = np.frombuffer(data, dtype=np.uint16)
        triangles = np.reshape(triangles, (-1, 3))
        assert nindices == len(triangles) * 3

        # Vertices
        accessor = glb.accessors[prim.attributes.POSITION]
        assert accessor.type == "VEC3"
        assert not accessor.sparse
        assert accessor.componentType == pygltflib.FLOAT
        nvertices = accessor.count
        bv = glb.bufferViews[accessor.bufferView]
        data = glb._glb_data[bv.byteOffset : bv.byteOffset + bv.byteLength]
        vertices = np.frombuffer(data, dtype=np.float32)
        vertices = np.reshape(vertices, (-1, 3))
        assert nvertices == len(vertices)

        faces = scale * vertices[triangles]
        cull = lambda face_index, winding: None if winding < 0 else {}
        meshes.append(svg3d.Mesh(faces, cull, style=style))

    return meshes