From 2eaf0cf8fd6e7c290497fedb08134a89e7b49b1d Mon Sep 17 00:00:00 2001 From: Konstantin Ritt Date: Thu, 19 Mar 2015 17:34:42 +0400 Subject: Update bundled FreeType to 2.5.5 Removed everything, imported with help of import_from_tarball.sh script, and then added a pre-generated builds/unix/ftconfig.h Task-number: QTBUG-44648 Change-Id: Iea948e41f7761f1580382b3763d04c7a61383382 Reviewed-by: Lars Knoll --- .../docs/reference/ft2-outline_processing.html | 1119 -------------------- 1 file changed, 1119 deletions(-) delete mode 100644 src/3rdparty/freetype/docs/reference/ft2-outline_processing.html (limited to 'src/3rdparty/freetype/docs/reference/ft2-outline_processing.html') diff --git a/src/3rdparty/freetype/docs/reference/ft2-outline_processing.html b/src/3rdparty/freetype/docs/reference/ft2-outline_processing.html deleted file mode 100644 index c0c0bc8ea7..0000000000 --- a/src/3rdparty/freetype/docs/reference/ft2-outline_processing.html +++ /dev/null @@ -1,1119 +0,0 @@ - - - - -FreeType-2.3.12 API Reference - - - - - - -

[Index]

[TOC]

FreeType-2.3.12 API Reference

- -

-Outline Processing -

Synopsis

- - - - - - - - - - - - - -

	FT_Outline		FT_Outline_MoveToFunc
	FT_OUTLINE_FLAGS		FT_Outline_LineToFunc
	FT_Outline_New		FT_Outline_ConicToFunc
	FT_Outline_Done		FT_Outline_CubicToFunc
	FT_Outline_Copy		FT_Outline_Funcs
	FT_Outline_Translate		FT_Outline_Decompose
	FT_Outline_Transform		FT_Outline_Get_CBox
	FT_Outline_Embolden		FT_Outline_Get_Bitmap
	FT_Outline_Reverse		FT_Outline_Render
	FT_Outline_Check		FT_Orientation
	FT_Outline_Get_BBox		FT_Outline_Get_Orientation
	ft_outline_flags

- -

This section contains routines used to create and destroy scalable glyph images known as ‘outlines’. These can also be measured, transformed, and converted into bitmaps and pixmaps.

FT_Outline

-Defined in FT_IMAGE_H (freetype/ftimage.h). -

-
-  typedef struct  FT_Outline_
-  {
-    short       n_contours;      /* number of contours in glyph        */
-    short       n_points;        /* number of points in the glyph      */
-
-    FT_Vector*  points;          /* the outline's points               */
-    char*       tags;            /* the points flags                   */
-    short*      contours;        /* the contour end points             */
-
-    int         flags;           /* outline masks                      */
-
-  } FT_Outline;
-
-  /* Following limits must be consistent with */
-  /* FT_Outline.{n_contours,n_points}         */
-#define FT_OUTLINE_CONTOURS_MAX  SHRT_MAX
-#define FT_OUTLINE_POINTS_MAX    SHRT_MAX
-
-

This structure is used to describe an outline to the scan-line converter.

fields

- - - - - - - -

n_contours	- The number of contours in the outline. -
n_points	- The number of points in the outline. -
points	- A pointer to an array of ‘n_points’ FT_Vector elements, giving the outline's point coordinates. -
tags	- A pointer to an array of ‘n_points’ chars, giving each outline point's type. - If bit 0 is unset, the point is ‘off’ the curve, i.e., a Bézier control point, while it is ‘on’ if set. - Bit 1 is meaningful for ‘off’ points only. If set, it indicates a third-order Bézier arc control point; and a second-order control point if unset. - If bit 2 is set, bits 5-7 contain the drop-out mode (as defined in the OpenType specification; the value is the same as the argument to the SCANMODE instruction). - Bits 3 and 4 are reserved for internal purposes. -
contours	- An array of ‘n_contours’ shorts, giving the end point of each contour within the outline. For example, the first contour is defined by the points ‘0’ to ‘contours[0]’, the second one is defined by the points ‘contours[0]+1’ to ‘contours[1]’, etc. -
flags	- A set of bit flags used to characterize the outline and give hints to the scan-converter and hinter on how to convert/grid-fit it. See FT_OUTLINE_FLAGS. -

note

The B/W rasterizer only checks bit 2 in the ‘tags’ array for the first point of each contour. The drop-out mode as given with FT_OUTLINE_IGNORE_DROPOUTS, FT_OUTLINE_SMART_DROPOUTS, and FT_OUTLINE_INCLUDE_STUBS in ‘flags’ is then overridden.

- - -

[Index]

[TOC]

- -

FT_OUTLINE_FLAGS

-Defined in FT_IMAGE_H (freetype/ftimage.h). -

-
-#define FT_OUTLINE_NONE             0x0
-#define FT_OUTLINE_OWNER            0x1
-#define FT_OUTLINE_EVEN_ODD_FILL    0x2
-#define FT_OUTLINE_REVERSE_FILL     0x4
-#define FT_OUTLINE_IGNORE_DROPOUTS  0x8
-#define FT_OUTLINE_SMART_DROPOUTS   0x10
-#define FT_OUTLINE_INCLUDE_STUBS    0x20
-
-#define FT_OUTLINE_HIGH_PRECISION   0x100
-#define FT_OUTLINE_SINGLE_PASS      0x200
-
-

A list of bit-field constants use for the flags in an outline's ‘flags’ field.

values

- - - - - - - - - - - - - - - - -

FT_OUTLINE_NONE	- Value 0 is reserved. -
FT_OUTLINE_OWNER	- If set, this flag indicates that the outline's field arrays (i.e., ‘points’, ‘flags’, and ‘contours’) are ‘owned’ by the outline object, and should thus be freed when it is destroyed. -
FT_OUTLINE_EVEN_ODD_FILL
	- By default, outlines are filled using the non-zero winding rule. If set to 1, the outline will be filled using the even-odd fill rule (only works with the smooth rasterizer). -
FT_OUTLINE_REVERSE_FILL
	- By default, outside contours of an outline are oriented in clock-wise direction, as defined in the TrueType specification. This flag is set if the outline uses the opposite direction (typically for Type 1 fonts). This flag is ignored by the scan converter. -
FT_OUTLINE_IGNORE_DROPOUTS
	- By default, the scan converter will try to detect drop-outs in an outline and correct the glyph bitmap to ensure consistent shape continuity. If set, this flag hints the scan-line converter to ignore such cases. See below for more information. -
FT_OUTLINE_SMART_DROPOUTS
	- Select smart dropout control. If unset, use simple dropout control. Ignored if FT_OUTLINE_IGNORE_DROPOUTS is set. See below for more information. -
FT_OUTLINE_INCLUDE_STUBS
	- If set, turn pixels on for ‘stubs’, otherwise exclude them. Ignored if FT_OUTLINE_IGNORE_DROPOUTS is set. See below for more information. -
FT_OUTLINE_HIGH_PRECISION
	- This flag indicates that the scan-line converter should try to convert this outline to bitmaps with the highest possible quality. It is typically set for small character sizes. Note that this is only a hint that might be completely ignored by a given scan-converter. -
FT_OUTLINE_SINGLE_PASS	- This flag is set to force a given scan-converter to only use a single pass over the outline to render a bitmap glyph image. Normally, it is set for very large character sizes. It is only a hint that might be completely ignored by a given scan-converter. -

note

The flags FT_OUTLINE_IGNORE_DROPOUTS, FT_OUTLINE_SMART_DROPOUTS, and FT_OUTLINE_INCLUDE_STUBS are ignored by the smooth rasterizer.

There exists a second mechanism to pass the drop-out mode to the B/W rasterizer; see the ‘tags’ field in FT_Outline.

Please refer to the description of the ‘SCANTYPE’ instruction in the OpenType specification (in file ‘ttinst1.doc’) how simple drop-outs, smart drop-outs, and stubs are defined.

- - -

[Index]

[TOC]

- -

FT_Outline_New

-Defined in FT_OUTLINE_H (freetype/ftoutln.h). -

-
-  FT_EXPORT( FT_Error )
-  FT_Outline_New( FT_Library   library,
-                  FT_UInt      numPoints,
-                  FT_Int       numContours,
-                  FT_Outline  *anoutline );
-
-
-  FT_EXPORT( FT_Error )
-  FT_Outline_New_Internal( FT_Memory    memory,
-                           FT_UInt      numPoints,
-                           FT_Int       numContours,
-                           FT_Outline  *anoutline );
-
-

Create a new outline of a given size.

input

- - - - -

library	- A handle to the library object from where the outline is allocated. Note however that the new outline will not necessarily be freed, when destroying the library, by FT_Done_FreeType. -
numPoints	- The maximal number of points within the outline. -
numContours	- The maximal number of contours within the outline. -

output

- - -

anoutline

A handle to the new outline.

return

FreeType error code. 0 means success.

note

The reason why this function takes a ‘library’ parameter is simply to use the library's memory allocator.

- - -

[Index]

[TOC]

- -

FT_Outline_Done

-Defined in FT_OUTLINE_H (freetype/ftoutln.h). -

-
-  FT_EXPORT( FT_Error )
-  FT_Outline_Done( FT_Library   library,
-                   FT_Outline*  outline );
-
-
-  FT_EXPORT( FT_Error )
-  FT_Outline_Done_Internal( FT_Memory    memory,
-                            FT_Outline*  outline );
-
-

Destroy an outline created with FT_Outline_New.

input

- - - -

library	- A handle of the library object used to allocate the outline. -
outline	- A pointer to the outline object to be discarded. -

return

FreeType error code. 0 means success.

note

If the outline's ‘owner’ field is not set, only the outline descriptor will be released.

The reason why this function takes an ‘library’ parameter is simply to use ft_mem_free().

- - -

[Index]

[TOC]

- -

FT_Outline_Copy

-Defined in FT_OUTLINE_H (freetype/ftoutln.h). -

-
-  FT_EXPORT( FT_Error )
-  FT_Outline_Copy( const FT_Outline*  source,
-                   FT_Outline        *target );
-
-

Copy an outline into another one. Both objects must have the same sizes (number of points & number of contours) when this function is called.

input

- - -

source

A handle to the source outline.

output

- - -

target

A handle to the target outline.

return

FreeType error code. 0 means success.

- - -

[Index]

[TOC]

- -

FT_Outline_Translate

-Defined in FT_OUTLINE_H (freetype/ftoutln.h). -

-
-  FT_EXPORT( void )
-  FT_Outline_Translate( const FT_Outline*  outline,
-                        FT_Pos             xOffset,
-                        FT_Pos             yOffset );
-
-

Apply a simple translation to the points of an outline.

inout

- - -

outline

A pointer to the target outline descriptor.

input

- - - -

xOffset	- The horizontal offset. -
yOffset	- The vertical offset. -

- - -

[Index]

[TOC]

- -

FT_Outline_Transform

-Defined in FT_OUTLINE_H (freetype/ftoutln.h). -

-
-  FT_EXPORT( void )
-  FT_Outline_Transform( const FT_Outline*  outline,
-                        const FT_Matrix*   matrix );
-
-

Apply a simple 2x2 matrix to all of an outline's points. Useful for applying rotations, slanting, flipping, etc.

inout

- - -

outline

A pointer to the target outline descriptor.

input

- - -

matrix

A pointer to the transformation matrix.

note

You can use FT_Outline_Translate if you need to translate the outline's points.

- - -

[Index]

[TOC]

- -

FT_Outline_Embolden

-Defined in FT_OUTLINE_H (freetype/ftoutln.h). -

-
-  FT_EXPORT( FT_Error )
-  FT_Outline_Embolden( FT_Outline*  outline,
-                       FT_Pos       strength );
-
-

Embolden an outline. The new outline will be at most 4 times ‘strength’ pixels wider and higher. You may think of the left and bottom borders as unchanged.

Negative ‘strength’ values to reduce the outline thickness are possible also.

inout

- - -

outline

A handle to the target outline.

input

- - -

strength

How strong the glyph is emboldened. Expressed in 26.6 pixel format.

return

FreeType error code. 0 means success.

note

The used algorithm to increase or decrease the thickness of the glyph doesn't change the number of points; this means that certain situations like acute angles or intersections are sometimes handled incorrectly.

If you need ‘better’ metrics values you should call FT_Outline_Get_CBox ot FT_Outline_Get_BBox.

Example call:

-  FT_Load_Glyph( face, index, FT_LOAD_DEFAULT );                   
-  if ( face->slot->format == FT_GLYPH_FORMAT_OUTLINE )             
-    FT_Outline_Embolden( &face->slot->outline, strength );         
-

- - -

[Index]

[TOC]

- -

FT_Outline_Reverse

-Defined in FT_OUTLINE_H (freetype/ftoutln.h). -

-
-  FT_EXPORT( void )
-  FT_Outline_Reverse( FT_Outline*  outline );
-
-

Reverse the drawing direction of an outline. This is used to ensure consistent fill conventions for mirrored glyphs.

inout

- - -

outline

A pointer to the target outline descriptor.

note

This function toggles the bit flag FT_OUTLINE_REVERSE_FILL in the outline's ‘flags’ field.

It shouldn't be used by a normal client application, unless it knows what it is doing.

- - -

[Index]

[TOC]

- -

FT_Outline_Check

-Defined in FT_OUTLINE_H (freetype/ftoutln.h). -

-
-  FT_EXPORT( FT_Error )
-  FT_Outline_Check( FT_Outline*  outline );
-
-

Check the contents of an outline descriptor.

input

- - -

outline

A handle to a source outline.

return

FreeType error code. 0 means success.

- - -

[Index]

[TOC]

- -

FT_Outline_Get_BBox

-Defined in FT_BBOX_H (freetype/ftbbox.h). -

-
-  FT_EXPORT( FT_Error )
-  FT_Outline_Get_BBox( FT_Outline*  outline,
-                       FT_BBox     *abbox );
-
-

Compute the exact bounding box of an outline. This is slower than computing the control box. However, it uses an advanced algorithm which returns very quickly when the two boxes coincide. Otherwise, the outline Bézier arcs are traversed to extract their extrema.

input

- - -

outline

A pointer to the source outline.

output

- - -

abbox

The outline's exact bounding box.

return

FreeType error code. 0 means success.

- - -

[Index]

[TOC]

- -

ft_outline_flags

-Defined in FT_IMAGE_H (freetype/ftimage.h). -

-
-#define ft_outline_none             FT_OUTLINE_NONE
-#define ft_outline_owner            FT_OUTLINE_OWNER
-#define ft_outline_even_odd_fill    FT_OUTLINE_EVEN_ODD_FILL
-#define ft_outline_reverse_fill     FT_OUTLINE_REVERSE_FILL
-#define ft_outline_ignore_dropouts  FT_OUTLINE_IGNORE_DROPOUTS
-#define ft_outline_high_precision   FT_OUTLINE_HIGH_PRECISION
-#define ft_outline_single_pass      FT_OUTLINE_SINGLE_PASS
-
-

These constants are deprecated. Please use the corresponding FT_OUTLINE_FLAGS values.

values

- - - - - - - - - - - - -

ft_outline_none	- See FT_OUTLINE_NONE. -
ft_outline_owner	- See FT_OUTLINE_OWNER. -
ft_outline_even_odd_fill
	- See FT_OUTLINE_EVEN_ODD_FILL. -
ft_outline_reverse_fill
	- See FT_OUTLINE_REVERSE_FILL. -
ft_outline_ignore_dropouts
	- See FT_OUTLINE_IGNORE_DROPOUTS. -
ft_outline_high_precision
	- See FT_OUTLINE_HIGH_PRECISION. -
ft_outline_single_pass	- See FT_OUTLINE_SINGLE_PASS. -

- - -

[Index]

[TOC]

- -

FT_Outline_MoveToFunc

-Defined in FT_IMAGE_H (freetype/ftimage.h). -

-
-  typedef int
-  (*FT_Outline_MoveToFunc)( const FT_Vector*  to,
-                            void*             user );
-
-#define FT_Outline_MoveTo_Func  FT_Outline_MoveToFunc
-
-

A function pointer type used to describe the signature of a ‘move to’ function during outline walking/decomposition.

A ‘move to’ is emitted to start a new contour in an outline.

input

- - - -

to	- A pointer to the target point of the ‘move to’. -
user	- A typeless pointer which is passed from the caller of the decomposition function. -

return

Error code. 0 means success.

- - -

[Index]

[TOC]

- -

FT_Outline_LineToFunc

-Defined in FT_IMAGE_H (freetype/ftimage.h). -

-
-  typedef int
-  (*FT_Outline_LineToFunc)( const FT_Vector*  to,
-                            void*             user );
-
-#define FT_Outline_LineTo_Func  FT_Outline_LineToFunc
-
-

A function pointer type used to describe the signature of a ‘line to’ function during outline walking/decomposition.

A ‘line to’ is emitted to indicate a segment in the outline.

input

- - - -

to	- A pointer to the target point of the ‘line to’. -
user	- A typeless pointer which is passed from the caller of the decomposition function. -

return

Error code. 0 means success.

- - -

[Index]

[TOC]

- -

FT_Outline_ConicToFunc

-Defined in FT_IMAGE_H (freetype/ftimage.h). -

-
-  typedef int
-  (*FT_Outline_ConicToFunc)( const FT_Vector*  control,
-                             const FT_Vector*  to,
-                             void*             user );
-
-#define FT_Outline_ConicTo_Func  FT_Outline_ConicToFunc
-
-

A function pointer type used to describe the signature of a ‘conic to’ function during outline walking or decomposition.

A ‘conic to’ is emitted to indicate a second-order Bézier arc in the outline.

input

- - - - -

control	- An intermediate control point between the last position and the new target in ‘to’. -
to	- A pointer to the target end point of the conic arc. -
user	- A typeless pointer which is passed from the caller of the decomposition function. -

return

Error code. 0 means success.

- - -

[Index]

[TOC]

- -

FT_Outline_CubicToFunc

-Defined in FT_IMAGE_H (freetype/ftimage.h). -

-
-  typedef int
-  (*FT_Outline_CubicToFunc)( const FT_Vector*  control1,
-                             const FT_Vector*  control2,
-                             const FT_Vector*  to,
-                             void*             user );
-
-#define FT_Outline_CubicTo_Func  FT_Outline_CubicToFunc
-
-

A function pointer type used to describe the signature of a ‘cubic to’ function during outline walking or decomposition.

A ‘cubic to’ is emitted to indicate a third-order Bézier arc.

input

- - - - - -

control1	- A pointer to the first Bézier control point. -
control2	- A pointer to the second Bézier control point. -
to	- A pointer to the target end point. -
user	- A typeless pointer which is passed from the caller of the decomposition function. -

return

Error code. 0 means success.

- - -

[Index]

[TOC]

- -

FT_Outline_Funcs

-Defined in FT_IMAGE_H (freetype/ftimage.h). -

-
-  typedef struct  FT_Outline_Funcs_
-  {
-    FT_Outline_MoveToFunc   move_to;
-    FT_Outline_LineToFunc   line_to;
-    FT_Outline_ConicToFunc  conic_to;
-    FT_Outline_CubicToFunc  cubic_to;
-
-    int                     shift;
-    FT_Pos                  delta;
-
-  } FT_Outline_Funcs;
-
-

A structure to hold various function pointers used during outline decomposition in order to emit segments, conic, and cubic Béziers.

fields

- - - - - - - -

move_to	- The ‘move to’ emitter. -
line_to	- The segment emitter. -
conic_to	- The second-order Bézier arc emitter. -
cubic_to	- The third-order Bézier arc emitter. -
shift	- The shift that is applied to coordinates before they are sent to the emitter. -
delta	- The delta that is applied to coordinates before they are sent to the emitter, but after the shift. -

note

The point coordinates sent to the emitters are the transformed version of the original coordinates (this is important for high accuracy during scan-conversion). The transformation is simple:

-  x' = (x << shift) - delta                                        
-  y' = (x << shift) - delta                                        
-

Set the values of ‘shift’ and ‘delta’ to 0 to get the original point coordinates.

- - -

[Index]

[TOC]

- -

FT_Outline_Decompose

-Defined in FT_OUTLINE_H (freetype/ftoutln.h). -

-
-  FT_EXPORT( FT_Error )
-  FT_Outline_Decompose( FT_Outline*              outline,
-                        const FT_Outline_Funcs*  func_interface,
-                        void*                    user );
-
-

Walk over an outline's structure to decompose it into individual segments and Bézier arcs. This function also emits ‘move to’ operations to indicate the start of new contours in the outline.

input

- - - -

outline	- A pointer to the source target. -
func_interface	- A table of ‘emitters’, i.e., function pointers called during decomposition to indicate path operations. -

inout

- - -

user

A typeless pointer which is passed to each emitter during the decomposition. It can be used to store the state during the decomposition.

return

FreeType error code. 0 means success.

- - -

[Index]

[TOC]

- -

FT_Outline_Get_CBox

-Defined in FT_OUTLINE_H (freetype/ftoutln.h). -

-
-  FT_EXPORT( void )
-  FT_Outline_Get_CBox( const FT_Outline*  outline,
-                       FT_BBox           *acbox );
-
-

Return an outline's ‘control box’. The control box encloses all the outline's points, including Bézier control points. Though it coincides with the exact bounding box for most glyphs, it can be slightly larger in some situations (like when rotating an outline which contains Bézier outside arcs).

Computing the control box is very fast, while getting the bounding box can take much more time as it needs to walk over all segments and arcs in the outline. To get the latter, you can use the ‘ftbbox’ component which is dedicated to this single task.

input

- - -

outline

A pointer to the source outline descriptor.

output

- - -

acbox

The outline's control box.

- - -

[Index]

[TOC]

- -

FT_Outline_Get_Bitmap

-Defined in FT_OUTLINE_H (freetype/ftoutln.h). -

-
-  FT_EXPORT( FT_Error )
-  FT_Outline_Get_Bitmap( FT_Library        library,
-                         FT_Outline*       outline,
-                         const FT_Bitmap  *abitmap );
-
-

Render an outline within a bitmap. The outline's image is simply OR-ed to the target bitmap.

input

- - - -

library	- A handle to a FreeType library object. -
outline	- A pointer to the source outline descriptor. -

inout

- - -

abitmap

A pointer to the target bitmap descriptor.

return

FreeType error code. 0 means success.

note

This function does NOT CREATE the bitmap, it only renders an outline image within the one you pass to it! Consequently, the various fields in ‘abitmap’ should be set accordingly.

It will use the raster corresponding to the default glyph format.

The value of the ‘num_grays’ field in ‘abitmap’ is ignored. If you select the gray-level rasterizer, and you want less than 256 gray levels, you have to use FT_Outline_Render directly.

- - -

[Index]

[TOC]

- -

FT_Outline_Render

-Defined in FT_OUTLINE_H (freetype/ftoutln.h). -

-
-  FT_EXPORT( FT_Error )
-  FT_Outline_Render( FT_Library         library,
-                     FT_Outline*        outline,
-                     FT_Raster_Params*  params );
-
-

Render an outline within a bitmap using the current scan-convert. This function uses an FT_Raster_Params structure as an argument, allowing advanced features like direct composition, translucency, etc.

input

- - - -

library	- A handle to a FreeType library object. -
outline	- A pointer to the source outline descriptor. -

inout

- - -

params

A pointer to an FT_Raster_Params structure used to describe the rendering operation.

return

FreeType error code. 0 means success.

note

You should know what you are doing and how FT_Raster_Params works to use this function.

The field ‘params.source’ will be set to ‘outline’ before the scan converter is called, which means that the value you give to it is actually ignored.

The gray-level rasterizer always uses 256 gray levels. If you want less gray levels, you have to provide your own span callback. See the FT_RASTER_FLAG_DIRECT value of the ‘flags’ field in the FT_Raster_Params structure for more details.

- - -

[Index]

[TOC]

- -

FT_Orientation

-Defined in FT_OUTLINE_H (freetype/ftoutln.h). -

-
-  typedef enum  FT_Orientation_
-  {
-    FT_ORIENTATION_TRUETYPE   = 0,
-    FT_ORIENTATION_POSTSCRIPT = 1,
-    FT_ORIENTATION_FILL_RIGHT = FT_ORIENTATION_TRUETYPE,
-    FT_ORIENTATION_FILL_LEFT  = FT_ORIENTATION_POSTSCRIPT,
-    FT_ORIENTATION_NONE
-
-  } FT_Orientation;
-
-

A list of values used to describe an outline's contour orientation.

The TrueType and PostScript specifications use different conventions to determine whether outline contours should be filled or unfilled.

values

- - - - - - - - - - -

FT_ORIENTATION_TRUETYPE
	- According to the TrueType specification, clockwise contours must be filled, and counter-clockwise ones must be unfilled. -
FT_ORIENTATION_POSTSCRIPT
	- According to the PostScript specification, counter-clockwise contours must be filled, and clockwise ones must be unfilled. -
FT_ORIENTATION_FILL_RIGHT
	- This is identical to FT_ORIENTATION_TRUETYPE, but is used to remember that in TrueType, everything that is to the right of the drawing direction of a contour must be filled. -
FT_ORIENTATION_FILL_LEFT
	- This is identical to FT_ORIENTATION_POSTSCRIPT, but is used to remember that in PostScript, everything that is to the left of the drawing direction of a contour must be filled. -
FT_ORIENTATION_NONE	- The orientation cannot be determined. That is, different parts of the glyph have different orientation. -

- - -

[Index]

[TOC]

- -

FT_Outline_Get_Orientation

-Defined in FT_OUTLINE_H (freetype/ftoutln.h). -

-
-  FT_EXPORT( FT_Orientation )
-  FT_Outline_Get_Orientation( FT_Outline*  outline );
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This function analyzes a glyph outline and tries to compute its fill orientation (see FT_Orientation). This is done by computing the direction of each global horizontal and/or vertical extrema within the outline.

Note that this will return FT_ORIENTATION_TRUETYPE for empty outlines.

input

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outline

A handle to the source outline.

return

The orientation.

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