ref: 8f963be41ca1f737836bff8ccb1983fdf489489e
dir: /include/freetype/ftstroke.h/
/***************************************************************************/
/* */
/* ftstroke.h */
/* */
/* FreeType path stroker (specification). */
/* */
/* Copyright 2002, 2003 by */
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
/* */
/* This file is part of the FreeType project, and may only be used, */
/* modified, and distributed under the terms of the FreeType project */
/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
/* this file you indicate that you have read the license and */
/* understand and accept it fully. */
/* */
/***************************************************************************/
#ifndef __FT_STROKE_H__
#define __FT_STROKE_H__
#include <ft2build.h>
#include FT_OUTLINE_H
FT_BEGIN_HEADER
/*@*************************************************************
*
* @type: FT_Stroker
*
* @description:
* opaque handler to a path stroker object
*/
typedef struct FT_StrokerRec_* FT_Stroker;
/*@*************************************************************
*
* @enum: FT_Stroker_LineJoin
*
* @description:
* these values determine how two joining lines are rendered
* in a stroker.
*
* @values:
* FT_STROKER_LINEJOIN_ROUND ::
* used to render rounded line joins. circular arcs are used
* to join two lines smoothly
*
* FT_STROKER_LINEJOIN_BEVEL ::
* used to render beveled line joins; i.e. the two joining lines
* are extended until they intersect
*
* FT_STROKER_LINEJOIN_MITER ::
* same as beveled rendering, except that an additional line
* break is added if the angle between the two joining lines
* is too closed (this is useful to avoid unpleasant spikes
* in beveled rendering).
*/
typedef enum
{
FT_STROKER_LINEJOIN_ROUND = 0,
FT_STROKER_LINEJOIN_BEVEL,
FT_STROKER_LINEJOIN_MITER
} FT_Stroker_LineJoin;
/*@*************************************************************
*
* @enum: FT_Stroker_LineCap
*
* @description:
* these values determine how the end of opened sub-paths are
* rendered in a stroke
*
* @values:
* FT_STROKER_LINECAP_BUTT ::
* the end of lines is rendered as a full stop on the last
* point itself
*
* FT_STROKER_LINECAP_ROUND ::
* the end of lines is rendered as a half-circle around the
* last point
*
* FT_STROKER_LINECAP_SQUARE ::
* the end of lines is rendered as a square around the
* last point
*/
typedef enum
{
FT_STROKER_LINECAP_BUTT = 0,
FT_STROKER_LINECAP_ROUND,
FT_STROKER_LINECAP_SQUARE
} FT_Stroker_LineCap;
/* */
FT_EXPORT( FT_Error )
FT_Stroker_New( FT_Memory memory,
FT_Stroker *astroker );
FT_EXPORT( void )
FT_Stroker_Set( FT_Stroker stroker,
FT_Fixed radius,
FT_Stroker_LineCap line_cap,
FT_Stroker_LineJoin line_join,
FT_Fixed miter_limit );
FT_EXPORT( FT_Error )
FT_Stroker_ParseOutline( FT_Stroker stroker,
FT_Outline* outline,
FT_Bool opened );
FT_EXPORT( FT_Error )
FT_Stroker_BeginSubPath( FT_Stroker stroker,
FT_Vector* to,
FT_Bool open );
FT_EXPORT( FT_Error )
FT_Stroker_EndSubPath( FT_Stroker stroker );
FT_EXPORT( FT_Error )
FT_Stroker_LineTo( FT_Stroker stroker,
FT_Vector* to );
FT_EXPORT( FT_Error )
FT_Stroker_ConicTo( FT_Stroker stroker,
FT_Vector* control,
FT_Vector* to );
FT_EXPORT( FT_Error )
FT_Stroker_CubicTo( FT_Stroker stroker,
FT_Vector* control1,
FT_Vector* control2,
FT_Vector* to );
FT_EXPORT( FT_Error )
FT_Stroker_GetCounts( FT_Stroker stroker,
FT_UInt *anum_points,
FT_UInt *anum_contours );
FT_EXPORT( void )
FT_Stroker_Export( FT_Stroker stroker,
FT_Outline* outline );
FT_EXPORT( void )
FT_Stroker_Done( FT_Stroker stroker );
FT_END_HEADER
#endif /* __FT_STROKE_H__ */
/* END */