==============
Class: Mesh II
==============

.. index:: class, mesh

.. |a| image:: /images/all/blender-extended/pyramid-100.png

Objectives
==========
   
.. tabularcolumns:: | c | l |
   :border: none

+-------+-------------------------------------------------------------------------+
|  |a|  |  Now we will finish the pyramid class                                   |
|       |                                                                         |
+-------+-------------------------------------------------------------------------+

Instructions
============
:Tasks:

1. Repeat the sub-steps shown here to create a class until you have a working version.
2. Create a class of its own »primitive«, eg. a wedge or the base form of a hex key.
3. Add a material to the class, which is given to the new object.


Design data for a mesh
======================
Define the tip of the pyramid and defining the faces, is the last step. 

.. code-block:: python
   :emphasize-lines: 10, 13-16

   def pyramid_values():
       """
       This function takes inputs and returns vertex and face arrays.
       no actual mesh data creation is done here.
       """
       verts = [(-1, +1, 0),
                (+1, +1, 0),
                (+1, -1, 0),
                (-1, -1, 0),
                (0, 0, +2)]
    
       faces = [(0, 1, 2, 3),
                (0,1,4),
                (1,2,4),
                (2,3,4),
                (3,0,4)]
    
       return verts, faces

Defining the faces is done clockwise and remember the indes starts with 0.

The result
==========
Now you are able to create as much pyramids as you like.

.. image:: /images/all/blender-extended/pyramiden.png


The final version of the class
==============================

.. literalinclude:: files/pyramid2.py
   :language: python