setNormal(nor)
- Sets the normal vector of the vertex.
nor:
- Type: float list [ nx, ny, nz]
nx:
- cosine of the normal to the world x-axis
- cosine of the normal to the world y-axis
- cosine of the normal to the world z-axis

Sample Code
############################# set the normal vector of the vertex
# import bge
import bge
# get the current controller
cont = bge.logic.getCurrentController()
# get object that owns this controller
obj = cont.owner
# Get a list of the mesh
meshList = obj.meshes
# Get the first mesh on the object
mesh = meshList[0]
# get the first vertex of the first material
vert = mesh.getVertex( 0, 0)
# normal vector
nor = [0.0, 0.0, -1.0]
# set the vertex normal vector
vert.setNormal(nor)