/* * Cogl * * An object oriented GL/GLES Abstraction/Utility Layer * * Copyright (C) 2008,2009,2013 Intel Corporation. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library. If not, see * . * * */ #if !defined(__COGL_H_INSIDE__) && !defined(COGL_COMPILATION) #error "Only can be included directly." #endif #ifndef __COGL_PATH_TYPES_H__ #define __COGL_PATH_TYPES_H__ #include COGL_BEGIN_DECLS typedef struct _CoglPath CoglPath; /** * CoglPathFillRule: * @COGL_PATH_FILL_RULE_NON_ZERO: Each time the line crosses an edge of * the path from left to right one is added to a counter and each time * it crosses from right to left the counter is decremented. If the * counter is non-zero then the point will be filled. See . * @COGL_PATH_FILL_RULE_EVEN_ODD: If the line crosses an edge of the * path an odd number of times then the point will filled, otherwise * it won't. See . * * #CoglPathFillRule is used to determine how a path is filled. There * are two options - 'non-zero' and 'even-odd'. To work out whether any * point will be filled imagine drawing an infinetely long line in any * direction from that point. The number of times and the direction * that the edges of the path crosses this line determines whether the * line is filled as described below. Any open sub paths are treated * as if there was an extra line joining the first point and the last * point. * * The default fill rule when creating a path is %COGL_PATH_FILL_RULE_EVEN_ODD. * *
* Example of filling various paths using the non-zero rule * *
* *
* Example of filling various paths using the even-odd rule * *
* * Since: 1.4 */ typedef enum { COGL_PATH_FILL_RULE_NON_ZERO, COGL_PATH_FILL_RULE_EVEN_ODD } CoglPathFillRule; COGL_END_DECLS #endif /* __COGL_PATH_TYPES_H__ */