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86 lines
3.1 KiB
C
86 lines
3.1 KiB
C
/*
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* Cogl
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*
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* A Low Level GPU Graphics and Utilities API
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*
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* Copyright (C) 2008,2009,2013 Intel Corporation.
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy,
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* modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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*
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*/
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#if !defined(__COGL_H_INSIDE__) && !defined(COGL_COMPILATION)
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#error "Only <cogl/cogl.h> can be included directly."
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#endif
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#ifndef __COGL_PATH_TYPES_H__
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#define __COGL_PATH_TYPES_H__
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#include <cogl/cogl-types.h>
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COGL_BEGIN_DECLS
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typedef struct _CoglPath CoglPath;
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/**
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* CoglPathFillRule:
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* @COGL_PATH_FILL_RULE_NON_ZERO: Each time the line crosses an edge of
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* the path from left to right one is added to a counter and each time
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* it crosses from right to left the counter is decremented. If the
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* counter is non-zero then the point will be filled. See <xref
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* linkend="fill-rule-non-zero"/>.
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* @COGL_PATH_FILL_RULE_EVEN_ODD: If the line crosses an edge of the
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* path an odd number of times then the point will filled, otherwise
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* it won't. See <xref linkend="fill-rule-even-odd"/>.
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*
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* #CoglPathFillRule is used to determine how a path is filled. There
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* are two options - 'non-zero' and 'even-odd'. To work out whether any
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* point will be filled imagine drawing an infinetely long line in any
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* direction from that point. The number of times and the direction
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* that the edges of the path crosses this line determines whether the
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* line is filled as described below. Any open sub paths are treated
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* as if there was an extra line joining the first point and the last
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* point.
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*
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* The default fill rule when creating a path is %COGL_PATH_FILL_RULE_EVEN_ODD.
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*
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* <figure id="fill-rule-non-zero">
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* <title>Example of filling various paths using the non-zero rule</title>
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* <graphic fileref="fill-rule-non-zero.png" format="PNG"/>
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* </figure>
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*
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* <figure id="fill-rule-even-odd">
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* <title>Example of filling various paths using the even-odd rule</title>
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* <graphic fileref="fill-rule-even-odd.png" format="PNG"/>
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* </figure>
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*
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* Since: 1.4
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*/
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typedef enum {
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COGL_PATH_FILL_RULE_NON_ZERO,
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COGL_PATH_FILL_RULE_EVEN_ODD
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} CoglPathFillRule;
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COGL_END_DECLS
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#endif /* __COGL_PATH_TYPES_H__ */
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