Exporting surfaces for 3d printing
===========================================================================

Bertini_real allows user to export and solidify (both raw & smooth surfaces) OBJ files for 3D printing, both for complete Surfaces, as well as Pieces of surfaces.

Exporting complete surfaces
*****************************

After decomposing a surface, you can run the following python codes to export and solidify OBJ in the Python Shell. 
We are using a surface **"Whitney"** in this example ☂️ .

::

    import bertini_real

    bertini_real.data.gather()

    surface = bertini_real.data.read_most_recent()

To export the raw version of OBJ, you can type:

::

	bertini_real.surface.export_obj_raw(surface)

And you will see an output like this:

::

	bertini_real.surface.export_obj_raw(surface)

	Generating raw OBJ surface...

	Export obj_raw_whitney.obj successfully

You can display OBJ using any 3D OBJ viewer:

.. image:: mesh_export_pictures/obj_raw_whitney.PNG
   :width: 300



To instead export the smooth version of OBJ, which requires that the surface has been sampled to your liking, you can type:

::

	bertini_real.surface.obj_smooth(surface)

And you will see an output like this:

::

	bertini_real.surface.obj_smooth(surface)

	Generating smooth OBJ surface...
	Export obj_smooth_whitney.obj successfully

You can display OBJ using any 3D OBJ viewer:

.. image:: mesh_export_pictures/obj_smooth_whitney.PNG
   :width: 300

To solidify the raw version of OBJ, you can type:

::

	bertini_real.surface.solidify_raw(surface)

And you will see an output like this:

::

	bertini_real.surface.solidify_raw(surface)

	Solidiying raw OBJ surface...
	Export solidify_raw_whitney.obj successfully

You can display OBJ using any 3D OBJ viewer:

.. image:: mesh_export_pictures/solidify_raw_whitney.PNG
   :width: 300

To solidify the smooth version of OBJ, you can type:

::

	bertini_real.surface.solidify_smooth(surface)

And you will see an output like this:

::

	bertini_real.surface.solidify_smooth(surface)

	Solidiying smooth OBJ surface...
	Export solidify_smooth_whitney.obj successfully

You can display OBJ using any 3D OBJ viewer:

.. image:: mesh_export_pictures/solidify_smooth_whitney.PNG
   :width: 300




:Author:
	Foong Min Wong, Silviana Amethyst

:Version: 1.2 2022/03/05

.. :Version: 1.0 2019/04/22