:class:`ExitanceConstant`
=========================


.. py:class:: ansys.speos.core.source.SourceSurface.ExitanceConstant(exitance_constant, exitance_constant_props, default_parameters = None, stable_ctr = False)

   
   Type of surface source existence : existence constant.


   :Parameters:

       **exitance_constant** : ansys.api.speos.source.v1.source_pb2.SourceTemplate.Surface.
           ..

       **ExitanceConstant**
           Existence constant to complete.

       **exitance_constant_props** : ansys.api.speos.scene.v2.scene_pb2.Scene.SourceInstance.
           ..

       **SurfaceProperties.ExitanceConstantProperties**
           Existence constant properties to complete.

       **default_parameters** : :obj:`Optional`\[        :obj:`ansys.speos.core.generic.parameters.ConstantExitanceParameters`] = :data:`python:None`
           If defined the values in the ExitanceConstant instance will be overwritten
            by the values of the data class.

       **stable_ctr** : :ref:`bool <python:bltin-boolean-values>`
           Variable to indicate if usage is inside class scope











   .. rubric:: Notes

   **Do not instantiate this class yourself**, use set_exitance_constant method
   available in Source classes.



   ..
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.. py:currentmodule:: ExitanceConstant

Overview
--------

.. tab-set::




   .. tab-item:: Properties

      .. list-table::
          :header-rows: 0
          :widths: auto

          * - :py:attr:`~geometries`
            - Geometries linked to surface source.







Import detail
-------------

.. code-block:: python

    from ansys.speos.core.source.SourceSurface import ExitanceConstant

Property detail
---------------

.. py:property:: geometries
   :type: List[tuple[ansys.speos.core.geo_ref.GeoRef, bool]]


   
   Geometries linked to surface source.


   :Parameters:

       **geometries** : :obj:`List`\[:class:`python:tuple`\[:obj:`Union`\[:obj:`ansys.speos.core.geo_ref.GeoRef`,            :obj:`ansys.speos.core.face.Face`, :obj:`ansys.speos.core.body.Body`], :ref:`bool <python:bltin-boolean-values>`]]
           list of tuple which contains geometry ref and bool for normal direction.



   :Returns:

       :obj:`List`\[:class:`python:tuple`\[:obj:`ansys.speos.core.geo_ref.GeoRef`, :ref:`bool <python:bltin-boolean-values>`]]
           list of tuple which contains geometry ref and bool for normal direction.











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