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DLR-AMR
GitHub Repository: DLR-AMR/t8code
 Path: blob/main/src/t8_element.h
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/*

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  This file is part of t8code.

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  t8code is a C library to manage a collection (a forest) of multiple

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  connected adaptive space-trees of general element classes in parallel.

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  Copyright (C) 2015 the developers

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  t8code is free software; you can redistribute it and/or modify

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  it under the terms of the GNU General Public License as published by

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  the Free Software Foundation; either version 2 of the License, or

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  (at your option) any later version.

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  t8code is distributed in the hope that it will be useful,

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  but WITHOUT ANY WARRANTY; without even the implied warranty of

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  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

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  GNU General Public License for more details.

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  You should have received a copy of the GNU General Public License

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  along with t8code; if not, write to the Free Software Foundation, Inc.,

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  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

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*/

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/** \file t8_element.h

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 * This file defines the opaque element structure and provides some

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 * constants for element classes.

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 */

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#ifndef T8_ELEMENT_H

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#define T8_ELEMENT_H

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#include <t8.h>

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#include <t8_eclass.h>

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#include <t8_element_shape.h>

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/** We want to export the whole implementation to be callable from "C". */

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T8_EXTERN_C_BEGIN ();

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/** Opaque structure for a generic element, only used as pointer.

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 * Implementations are free to cast it to their internal data structure.

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 */

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typedef struct t8_element t8_element_t;

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/** This array holds the reference coordinates of each vertex of each element.

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 *  It can e.g. be used with the \ref t8_scheme::element_get_reference_coords function.

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 *  Usage: t8_element_corner_ref_coords[eclass][vertex][dimension]

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 */

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extern const double t8_element_corner_ref_coords[T8_ECLASS_COUNT][T8_ECLASS_MAX_CORNERS][3];

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/** This array holds the reference coordinates of the centroid of each element.

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 *  It can e.g. be used with the \ref t8_scheme::element_get_reference_coords function.

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 *  Usage: t8_element_centroid_ref_coords[eclass][dimension]

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 */

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extern const double t8_element_centroid_ref_coords[T8_ECLASS_COUNT][3];

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/** End of code that is callable from "C".*/

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T8_EXTERN_C_END ();

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#endif /* !T8_ELEMENT_H */

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