mirror of
https://github.com/brl/mutter.git
synced 2024-12-30 14:42:14 +00:00
86 lines
3.1 KiB
C
86 lines
3.1 KiB
C
/*
|
|
* Cogl
|
|
*
|
|
* A Low Level GPU Graphics and Utilities API
|
|
*
|
|
* Copyright (C) 2008,2009,2013 Intel Corporation.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person
|
|
* obtaining a copy of this software and associated documentation
|
|
* files (the "Software"), to deal in the Software without
|
|
* restriction, including without limitation the rights to use, copy,
|
|
* modify, merge, publish, distribute, sublicense, and/or sell copies
|
|
* of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be
|
|
* included in all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
|
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
|
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
|
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
* SOFTWARE.
|
|
*
|
|
*
|
|
*/
|
|
|
|
#if !defined(__COGL_H_INSIDE__) && !defined(COGL_COMPILATION)
|
|
#error "Only <cogl/cogl.h> can be included directly."
|
|
#endif
|
|
|
|
#ifndef __COGL_PATH_TYPES_H__
|
|
#define __COGL_PATH_TYPES_H__
|
|
|
|
#include <cogl/cogl-types.h>
|
|
|
|
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 <xref
|
|
* linkend="fill-rule-non-zero"/>.
|
|
* @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 <xref linkend="fill-rule-even-odd"/>.
|
|
*
|
|
* #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.
|
|
*
|
|
* <figure id="fill-rule-non-zero">
|
|
* <title>Example of filling various paths using the non-zero rule</title>
|
|
* <graphic fileref="fill-rule-non-zero.png" format="PNG"/>
|
|
* </figure>
|
|
*
|
|
* <figure id="fill-rule-even-odd">
|
|
* <title>Example of filling various paths using the even-odd rule</title>
|
|
* <graphic fileref="fill-rule-even-odd.png" format="PNG"/>
|
|
* </figure>
|
|
*
|
|
* 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__ */
|