127 lines
3.5 KiB
C
127 lines
3.5 KiB
C
/* EINA - EFL data type library
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* Copyright (C) 2007-2014 Jorge Luis Zapata
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef EINA_QUAD_H_
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#define EINA_QUAD_H_
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#include <eina_rectangle.h>
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/**
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* @file
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*/
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/**
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* @addtogroup Eina_Data_Types_Group Data Types
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*
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* @{
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*/
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/**
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* @defgroup Eina_Quad_Group Quadrangles
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*
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* @brief Quadrangles operations.
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*
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* @{
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*/
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/**
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* Quadrangle definition
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*/
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typedef struct _Eina_Quad
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{
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double x0; /**< Top left x coordinate */
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double y0; /**< Top left y coordinate */
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double x1; /**< Top right x coordinate */
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double y1; /**< Top right y coordinate */
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double x2; /**< Bottom right x coordinate */
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double y2; /**< Bottom right y coordinate */
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double x3; /**< Bottom left x coordinate */
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double y3; /**< Bottom left y coordinate */
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} Eina_Quad;
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/**
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* @brief Transform the given quadrangle to the given rectangle.
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*
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* @param[in] q The quadrangle to get coordinates.
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* @param[out] r The rectangle.
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*
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* @since 1.14
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* */
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EAPI void eina_quad_rectangle_to(const Eina_Quad *q,
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Eina_Rectangle *r);
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/**
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* @brief Transform the given rectangle to the given quadrangle.
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*
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* @param[in] q The quadrangle.
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* @param[out] r The rectangle to get coordinates.
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*
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* @since 1.14
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* */
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EAPI void eina_quad_rectangle_from(Eina_Quad *q,
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const Eina_Rectangle *r);
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/**
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* @brief Sets the values of the coordinates of the given quadrangle.
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*
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* @param[out] q The quadrangle to set coordinates.
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* @param[in] x0 Top left x coordinate.
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* @param[in] y0 Top left y coordinate.
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* @param[in] x1 Top right x coordinate.
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* @param[in] y1 Top right y coordinate.
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* @param[in] x2 Bottom right x coordinate.
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* @param[in] y2 Bottom right y coordinate.
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* @param[in] x3 Bottom left x coordinate.
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* @param[in] y3 Bottom left y coordinate.
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*
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* @since 1.14
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* */
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EAPI void eina_quad_coords_set(Eina_Quad *q,
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double x0, double y0,
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double x1, double y1,
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double x2, double y2,
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double x3, double y3);
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/**
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* @brief Gets the values of the coordinates of the given quadrangle.
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*
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* @param[in] q The quadrangle to get coordinates.
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* @param[out] x0 Top left x coordinate.
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* @param[out] y0 Top left y coordinate.
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* @param[out] x1 Top right x coordinate.
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* @param[out] y1 Top right y coordinate.
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* @param[out] x2 Bottom right x coordinate.
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* @param[out] y2 Bottom right y coordinate.
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* @param[out] x3 Bottom left x coordinate.
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* @param[out] y3 Bottom left y coordinate.
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*
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* @since 1.14
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* */
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EAPI void eina_quad_coords_get(const Eina_Quad *q,
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double *x0, double *y0,
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double *x1, double *y1,
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double *x2, double *y2,
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double *x3, double *y3);
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/**
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* @}
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*/
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/**
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* @}
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*/
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#endif
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